U.S. patent application number 12/387449 was filed with the patent office on 2010-11-04 for gas burner.
Invention is credited to Uwe Harneit.
Application Number | 20100279238 12/387449 |
Document ID | / |
Family ID | 43030634 |
Filed Date | 2010-11-04 |
United States Patent
Application |
20100279238 |
Kind Code |
A1 |
Harneit; Uwe |
November 4, 2010 |
Gas burner
Abstract
What is shown is an improved gas burner assembly that is easily
adapted to attach to a range top or cooktop, or the floor of the
range and can draw air from either above the range top level by
external vents or from below range top level through an open style
mixing cup. The improved gas burner assembly uses a plurality of
flame rings providing the user a wide variety of temperature
settings starting from a low intensity simmer to high intensity
cooking heat. A gas transfer channel provides a sustaining ignition
source. The gas transfer channel has sustaining flame buttons
interior to the burner body, and provides the initial ignition for
the main flame rings. The gas transfer channel additionally has
slots that provide additional sustaining flames for the main flame
rings located on the exterior of the burner body. The improved gas
burner assembly additionally uses a cover plate of transparent or
translucent, heat proof material that allows the user to observe
the interior of the burner to which flame rings have ignited. The
cover plate also transfers heat from the internal flame rings to
the cooking utensil imparting a more uniform transfer of heat to
the cooking utensil.
Inventors: |
Harneit; Uwe; (Chino Hills,
CA) |
Correspondence
Address: |
Lewis M. Brande
5976 Falling Tree Lane
Alta Loma
CA
91737-2816
US
|
Family ID: |
43030634 |
Appl. No.: |
12/387449 |
Filed: |
May 2, 2009 |
Current U.S.
Class: |
431/144 ;
431/254; 431/354 |
Current CPC
Class: |
F23L 1/00 20130101; F23D
2900/14063 20130101; F23L 9/00 20130101; F23D 2900/14062 20130101;
F23D 2900/14064 20130101; F23D 14/64 20130101; F23D 14/06
20130101 |
Class at
Publication: |
431/144 ;
431/254; 431/354 |
International
Class: |
F23Q 7/22 20060101
F23Q007/22; F23Q 7/06 20060101 F23Q007/06; F23D 14/62 20060101
F23D014/62 |
Claims
1. An improved gas burner, comprising: a. a mixing cup, said mixing
cup has a means to provide gaseous fuel to at least two primary
jets, said mixing cup further has means to provide gaseous fuel to
a secondary jet; b. a burner body, said burner body has a main
burner chamber, said main burner chamber has an inner wall and an
outer wall, said outer wall has at least a first series of holes or
slots defining a first flame ring therein, said inner wall has a
third series of holes defined therethrough said third series of
holes having at least one hole, said burner body has a means to
provide gaseous fuel to said main burner chamber, said inner wall
creates a central cavity thereby, said main burner chamber has a
means to communicate with said primary jet, said burner body
further having a means to equalize the pressure of the exiting
flammable gas-air mixture in proximity to said means to provide
gaseous fuel to said main burner chamber; c. said burner body
further has a secondary burner centrally positioned within said
central cavity, said secondary burner has an end cap positioned
thereon, said secondary burner has a small groove defined therein,
said small groove is positioned below said end cap, said secondary
burner has a fifth series of holes defined therein, said fifth
series of holes are positionally located within said small groove,
said secondary burner is positioned above said secondary jet, said
burner body has at least one secondary air slot defined therein,
said air slots communicate with said central cavity and provide air
to said third and fifth holes; d. a burner cap, said burner cap has
a bottom side, said bottom side has a means to be positionally
located onto said burner body, said burner cap further has a cover
plate, said cover plate has a heat resistant portion, said cover
plate is offsettedly positioned over said cap and provides visual
access to a fifth and third flames, said fifth and third flames are
ignited from said fifth and third holes respectively; e. an
ignition electrode, said ignition electrode is offsettedly placed
near said fifth series of holes in said secondary burner, said
ignition electrode is adapted to ignite a gas-air mixture creating
a fifth flame ring thereby, said gas-air mixture from said third
series of holes is ignited from flames from the fifth flame ring,
creating a sustaining flame button thereby, said main burner
chamber has a series of transfer channels, said transfer channels
provide communication between said main burner chamber and said
secondary air slot; and f. said burner body further has a gas
transfer channel defined therein, said gas transfer channel does
not communicate with said main burner chamber, said gas transfer
channel allows said central cavity in said burner body to
communicate with the exterior of said burner, said gas transfer
channel providing an ignited gas/air mixture to ignite said first
series of holes creating said first flame ring, said third holes or
slots provide gas/air mixture to provide a sustaining flame button
thereby, the gas transfer channel has a fourth series of slots
defined therein allowing some communication between said main
burner chamber and said gas transfer channel creating a fourth
sustaining ring thereby.
2. The improved gas burner described in claim 1 wherein said means
to provide gaseous fuel to at least two primary jets comprises a
gas supply tube, said gas supply tube is adapted to receive a gas
supply line, said gas supply line provides flammable gas
thereby.
3. The improved gas burner described in claim 1 wherein said means
to provide gaseous fuel to said secondary jet comprises a secondary
gas transfer tube, said secondary jet communicates with said
secondary gas transfer tube allowing flammable gas to be
transmitted thereby.
4. The improved gas burner described in claim 1 wherein said means
to provide gaseous fuel to said main burner chamber and said means
for said main burner chamber to communicate with said primary jet
comprises a primary gas mixing chamber, said primary gas mixing
chamber is attached to said burner body and is located above each
of said primary jet, creating a gap thereby, said gap allows air to
be drawn into said primary gas mixing chamber, said primary gas
mixing chamber allows a flammable gas-air mixture to transmitted
therethrough and into said main burner chamber.
5. The improved gas burner described in claim 1 wherein said means
of said bottom side of said burner cap to be positionally located
onto said burner body comprises a downward protruding boss, said
downward protruding boss is adapted to fit inside an inner wall of
said main burner chamber, said burner cap additionally has mass
sufficient to prevent inadvertent dislocation from said burner body
and provide a good fit to said burner body.
6. The improved gas burner described in claim 1 wherein said mixing
cup is adapted to fit within a range top, said mixing cup is
adapted to be fastened to the range top, said burner body is
adapted to be positionally placed on said mixing cup, said burner
body is offsettedly placed on said mixing cup creating a gap
thereby, said gap allowing air to be drawn to said primary and said
secondary inlet chambers.
7. The improved gas burner described in claim 1 wherein said top
side of said burner cap has a plurality of upward protruding
bosses, said upward protruding bosses creates a planar surface
thereby, each of said upward protruding bosses has a through hole
defined therein, each of said upward protruding bosses further has
means to positionally secure said cover plate, placing said burner
cap on said upward protruding bosses defines a gap between said top
side of said burner cap and said cover plate.
8. The improved gas burner described in claim 7 wherein said means
to positionally secure said cover plate is at least one
fastener.
9. The improved gas burner described in claim 1 wherein said outer
wall of said main burner chamber has defined therein a seventh
series of holes or slots, said seventh series of slots have cross
sectional areas that is less than that of said first series of
slots or holes defined in said burner body, said, seventh series of
holes or slots also being biased towards said upper portion of said
burner body, said burner body further has interspaced between each
of said seventh series of slots an eighth series of slots or
grooves defined therein, said eighth series of grooves allowing a
flammable gas-air mixture to exit said main burner chamber and
thereby provide a continuous flame for said first flame ring, said
burner body further has a ninth series of grooves defined therein,
said ninth series of holes being situated below said eighth series
of, said ninth series of holes provide additional flammable gas-air
for said first flame ring making said first flame ring
circumferentially continuous thereby.
10. The improved gas burner described in claim 1 wherein said heat
resistant central portion of said burner cap cover is transparent,
and said heat resistant central portion of said burner cap cover is
secured by said upward protruding bosses located on said top side
of said burner cap.
11. The improved gas burner described in claim 1 wherein said heat
resistant central portion of said burner cap cover is
translucent.
12. The improved gas burner described in claim 1 wherein said means
to equalize the pressure of the exiting flammable gas-air mixture
comprises said burner body having a ninth series of holes defined
therein, said burner body further having a seventh series of slots
defined therein, said seventh series of slots being positionally
located on said upper portion of said burner body, said ninth
series of holes being positionally located below said seventh
series of slots said seventh series of slots having a smaller cross
sectional area than said first series of slots, said ninth series
of holes equalizing said cross sectional areas, said seventh series
of slots and ninth series of holes allow the flammable gas-air
mixture to exit said main burner chamber providing a continuous
flame for said first flame ring thereby, said upper portion of said
burner body additionally has a eighth series of holes defined
therein, said eighth series of slots being positionally situated
between said first series of grooves, said eighth series of slots
providing additional flammable gas-air for said first flame ring
making the first flame ring circumferentially continuous
thereby.
13. An improved gas burner, comprising: a. a mixing cup, said
mixing cup is adapted to be fastened to a range top, said mixing
cup has an internal cavity defined therein, said internal cavity
has vertical flanges, said vertical flanges partition said internal
cavity creating at least two primary and one secondary inlet
chambers thereby; b. each of said primary inlet chambers has a
primary jet, said primary jet communicates with a primary gas
supply tube, said gas supply tube is adapted to receive a gas
supply line, allowing flammable gas to be transmitted to said
primary jet thereby; c. said secondary inlet chamber has a
secondary jet, said secondary jet communicates with a secondary gas
transfer tube, said secondary gas transfer tube is adapted to
receive flammable gas from a secondary gas supply line; d. said
mixing cup has a hole defined therein, said hole is positionally
placed near said secondary inlet chamber and is adapted to allow an
ignition electrode to be placed therein, said hole is further
adapted to allow a nut to secure said ignition electrode in said
mixing cup; e. a burner body, said burner body has a main burner
chamber, said main burner chamber has an inner wall and an outer
wall, said outer wall has at least a first series of holes or slots
defining a first flame ring defined therein, said first series of
holes or slots are located on an upper portion of said burner body
and said outer wall, said inner wall has a third series of holes
defined therethrough said third series of holes having at least one
hole, said third series of holes are located in proximity to a gas
transfer tube, said burner body has a means to provide gaseous fuel
to said main burner chamber, said inner wall creates a central
cavity thereby, said main burner chamber has a means to communicate
with said primary jet, said burner body further has a hole defined
therein, said hole allowing a secondary burner to be centrally
positioned therein, said burner body further having a means to
equalize the pressure of the exiting flammable gas-air mixture in
proximity to said means to provide gaseous fuel to said main burner
chamber; f. said secondary burner has a secondary transfer tube,
said secondary burner is positioned above said secondary jet, said
secondary burner further has an end cap positioned thereon, said
secondary burner has a small groove defined therein, said small
groove is positioned below said end cap, said secondary burner
further has a fifth series of holes defined therein, said fifth
series of holes are positionally located within said small groove,
the flammable gas-air mixture communicates with said fifth series
of holes via said secondary transfer tube, said burner body has at
least one secondary air slot defined therein, said secondary air
slot communicates with said central cavity and provides air to said
third and fifth holes, said transfer tube has a ring defined
thereon, said ring is adapted to fit within said hole of said
burner body; g. a burner cap, said burner cap has a bottom side,
said bottom side has a means to be positionally located onto said
burner body, said burner cap further has a cover plate, said cover
plate has a heat resistant central portion, said cover plate is
offsettedly positioned over said burner cap and provides visual
access to a fifth and a sixth flame ring, said fifth and sixth
flame rings are ignited from said fifth and sixth holes
respectively; and h. an ignition electrode, said ignition electrode
being offsettedly placed near said fifth series of holes in said
secondary burner, said ignition electrode is adapted to ignite a
gas-air mixture creating said fifth flame ring thereby, said
gas-air mixture from said sixth series of holes are ignited from
flames from said fifth flame ring, creating said sixth flame ring
thereby.
14. The improved gas burner described in claim 13 wherein said
means to provide gaseous fuel to said main burner chamber and said
means for said main burner chamber to communicate with said primary
jet comprises a primary gas mixing chamber, said primary gas mixing
chamber is attached to said burner body and is located above each
primary jet, creating a gap thereby, said gap allows air to be
drawn into said primary gas mixing chamber, said primary gas mixing
chamber allows a flammable gas-air mixture to transmitted
therethrough and into said main burner chamber.
15. The improved gas burner described in claim 13 wherein said
means of said bottom side of said burner cap to be positionally
located onto said burner body comprises a downward protruding boss,
said downward protruding boss is adapted to fit inside an inner
wall of said main burner chamber, said burner cap additionally has
mass sufficient to prevent inadvertent dislocation from said burner
body and provides a good seal to said burner body.
16. The improved gas burner described in claim 13 wherein said top
side of said burner cap has a plurality of upward protruding
bosses, said upward protruding bosses creates a planar surface
thereby, each of said upward protruding bosses has a through hole
defined therein, each of said upward protruding bosses further has
means to positionally secure said cover plate, placing said cover
plate on said upward protruding bosses defines a gap between top
side of said burner cap and said cover plate.
17. The improved gas burner described in claim 16 wherein said
means to positionally secure said cover plate is at least one
fastener.
18. The improved gas burner described in claim 13 wherein said
burner body has vertical locators, each of said vertical locators
has extensions to positionally locate said burner body to said
mixing cup, each of said vertical locators and their extensions
reach into said primary air inlet chambers and prevent sideways
tipping of said burner body over said mixing cup thereby, said
vertical locators and their extensions provide for secure centering
of said primary jets and therefore said primary gas flow opening to
said primary gas mixing chamber and respectively said secondary jet
and said secondary gas flow opening to said secondary mixing
chamber.
19. The improved gas burner described in claim 13 wherein said
burner body is offsettedly placed from said mixing cup, creating an
open air passage or primary air slot therebetween, said primary air
slot allows air into said primary air inlet chamber.
20. The improved gas burner described in claim 13 wherein said heat
resistant central portion of said cover plate of said burner cap is
transparent.
21. The improved gas burner described in claim 13 wherein said heat
resistant central portion of cover plate of said burner cap is
translucent.
22. The improved gas burner described in claim 13 wherein said
means to equalize the pressure of the exiting flammable gas-air
mixture comprises said burner body having a ninth series of holes
defined therein, said burner body further having a seventh series
of slots defined therein, said seventh series of slots being
positionally located on said upper portion of said burner body,
said ninth series of holes being positionally located below said
seventh series of slots said seventh series of slots having a
smaller cross sectional area than said first series of slots, said
ninth series of holes equalizing said cross sectional areas, said
seventh series of slots and ninth series of holes allow the
flammable gas-air mixture to exit said main burner chamber
providing a continuous flame for said first flame ring thereby,
said upper portion of said burner body additionally has a eighth
series of holes defined therein, said eighth series of slots being
positionally situated between said first series of grooves, said
eighth series of slots providing additional flammable gas-air for
said first flame ring making the first flame ring circumferentially
continuous thereby.
23. An improved gas burner, comprising: a. a mixing cup, said
mixing cup has a gas supply line, said gas supply line is adapted
to receive a gas supply tube, said gas supply tube has a first end
and a second end, a first support and a second support project
upwards from said gas supply tube and attach to an attachment
plate, said attachment plate has an outer perimeter and an inner
open cavity defined thereby; b. an upwards protruding boss
surrounds said inner open cavity, said upwards protruding boss is
adapted to loosely fit within a pre-defined hole in a cook top, a
central boss is positioned on said gas supply tube and has a
transverse boss that protrudes from said central boss, said
transverse boss has a central hole or secondary gas transfer tube
defined therein; c. said secondary gas transfer tube has an inlet,
said inlet is adapted to receive a gas line; d. a primary gas jet
is positioned in close proximity to said first and second ends,
where each primary gas jet communicates with said gas supply tube
supplying gaseous fuel to a burner body, a secondary jet is placed
on a top surface of said transverse boss, said secondary jet
communicates with said secondary gas transfer tube thereby, said
secondary jet is enclosed on three sides by a first, second and
third wall; e. an ignition electrode mounting plate has a central
hole defined therein, said ignition electrode mounting plate is
attached to said attachment plate and said first, second and third
wall; said burner body has a main burner chamber, said main burner
chamber has an inner wall and an outer wall, said outer wall has at
least a first series of holes or slots defined therein, said first
series of holes or slots are located on an upper portion of said
burner body and said outer wall, said inner wall has a third series
of holes defined therethrough said third series of holes having at
least one hole, said third series of holes are located on said
upper portion of said burner body, said burner body has a means to
provide gaseous fuel to said main burner chamber, said inner wall
creates a central cavity thereby, said main burner chamber has a
means to communicate with said primary jet, said burner body
further has a hole defined therein, said hole allows a secondary
burner to be centrally positioned therein, said burner body further
having a means to equalize the pressure of the exiting flammable
gas-air mixture in proximity to said means to provide gaseous fuel
to said main burner chamber; g. said secondary burner has a
secondary transfer tube, said secondary burner is positioned above
said secondary jet, said secondary burner further has an end cap
positioned thereon, said secondary burner has a small groove
defined therein, said small groove is positioned below said end
cap, said secondary burner further has a fifth series of holes
defined therein, said fifth series of holes are positionally
located within said small groove, the flammable gas-air mixture
communicates with said fifth series of holes via said secondary
transfer tube, said burner body has at least one secondary air slot
defined therein, said secondary air slot communicates with said
central cavity and provides air to said third and fifth series of
holes, said transfer tube has a ring defined thereon, said ring is
adapted to fit within said hole of said burner body; h. a burner
cap, said burner cap has a bottom side, said bottom side has a
means to be positionally located onto said burner body, said burner
cap further has a cover plate, said cover plate has a heat
resistant central portion, said cover plate is offsettedly
positioned over said cover plate and provides visual access to a
fifth and a sixth flame, said fifth and sixth flames are ignited
from said fifth and sixth holes respectively; and i. an ignition
electrode, said ignition electrode being offsettedly placed near
said fifth series of holes in said secondary burner, said ignition
electrode is adapted to ignite a gas-air mixture creating a fifth
flame ring thereby, said gas-air mixture from said third series of
holes are ignited from flames from the fifth flame ring, creating a
third flame ring thereby, said main burner chamber has at least one
transfer channel, said transfer channel provides communication
between said main burner chamber and said secondary air slot, said
secondary air slot further has a smooth radiused transition
thereon, said smooth radiused transition provides an ignition flame
for said flame rings located on said outer wall of said burner
body, igniting said flame rings thereby.
24. The improved gas burner described in claim 23 wherein said
means to provide gaseous fuel to said main burner chamber and said
means for said main burner chamber to communicate with said primary
jet comprises a primary gas mixing chamber, said primary gas mixing
chamber is attached to said burner body and is located above each
said primary jet, creating a gap thereby, said gap allows air to be
drawn into said primary gas mixing chamber, said primary gas mixing
chamber allows a flammable gas-air mixture to transmitted
therethrough and into said main burner chamber.
25. The improved gas burner described in claim 23 wherein said
means of said bottom side of said burner cap to be positionally
located onto said burner body comprises a downward protruding boss,
said downward protruding boss is adapted to fit inside an inner
wall of said main burner chamber, said burner cap additionally has
mass sufficient to prevent inadvertent dislocation from said burner
body and provides a good seal to said burner body.
26. The improved gas burner described in claim 23 wherein said top
side of said burner cap has a plurality of upward protruding
bosses, said upward protruding bosses creates a planar surface
thereby, each of said upward protruding bosses has a through hole
defined therein, each of said upward protruding bosses further has
means to positionally secure said cover plate, placing said cover
plate on said upward protruding bosses defines a gap between top
side of said burner cap and said cover plate.
27. The improved gas burner described in claim 26 wherein said
means to positionally secure said cover plate is at least one
fastener.
28. The improved gas burner described in claim 23 wherein said
burner body has a plurality of vertical locators, each of said
vertical locators has extensions to positionally locate said burner
body to said mixing cup, each of said vertical locators and their
extensions reach into said primary air inlet chambers and prevent
sideways tipping of said burner body over said mixing cup thereby,
said vertical locators and their extensions provide for secure
centering of said primary jets and therefore said primary gas flow
opening to said primary gas mixing chamber and respectively said
secondary jet and said secondary gas flow opening to said secondary
mixing chamber.
29. The improved gas burner described in claim 23 wherein said
burner body is placed upon said mixing cup, and is adapted to
prevent air from entering said mixing cup from above the range or
cooktop.
30. The improved gas burner described in claim 23 wherein said heat
resistant central portion of said cover plate of said burner cap is
transparent.
31. The improved gas burner described in claim 23 wherein said heat
resistant central portion of said cover plate of said burner cap is
translucent.
32. The improved gas burner described in claim 23 wherein said
means to equalize the pressure of the exiting flammable gas-air
mixture comprises said burner body having a ninth series of holes
defined therein, said burner body further having a seventh series
of slots defined therein, said seventh series of slots being
positionally located on said upper portion of said burner body,
said ninth series of holes being positionally located below said
seventh series of slots said seventh series of slots having a
smaller cross sectional area than said first series of slots, said
ninth series of holes equalizing said cross sectional areas, said
seventh series of slots and ninth series of holes allow the
flammable gas-air mixture to exit said main burner chamber
providing a continuous flame for said first flame ring thereby,
said upper portion of said burner body additionally has a eighth
series of holes defined therein, said eighth series of slots being
positionally situated between said first series of grooves, said
eighth series of slots providing additional flammable gas-air for
said first flame ring making the first flame ring circumferentially
continuous thereby.
Description
BACKGROUND OF THE INVENTION
Field of the Invention
[0001] The present invention relates to the field of gas burners
that are used in the home. Specifically, these burners are used on
surface units in household gas cooking appliances.
SUMMARY OF THE INVENTION
[0002] Atmospheric gas burners commonly used as surface units in
household gas cooking appliances generally come in different sizes.
The actual physical size of the burner as well as its energy
output, which is referred to as BTU's, (British thermal units) are
two of many design elements that are used to size the gas burners.
The various burner sizes are needed to cook the myriad number of
food items that are cooked in different sizes and shapes of cooking
containers to satisfy the countless taste requirements of the
population.
[0003] Gas burners have typically a maximum energy output, which is
specified in BTU's, and a minimum energy output, also specified in
BTU's. To regulate this energy output the gas flow to each burner
is controlled by its own individual gas valve, usually one gas
valve controls the gas flow to one gas burner. Manipulation of the
burner's gas valve controls whether the burner is operating at its
maximum or minimum energy output as well as an infinite number of
adjustments between these extreme energy flows.
[0004] Generally, the current state of the art of surface mounted
gas burners permit a minimum flow adjustment that is at fifteen
percent (15%) of the maximum flow adjustment. There are burners,
however, that have a minimum adjustment less than fifteen percent
(15%) of the maximum flow adjustment and there also are burners
that have a minimum energy flow setting that is greater than
fifteen percent of the maximum flow adjustment. Therefore, in order
to perform a cooking operation that requires a small BTU energy
flow, such as melting chocolate without boiling and burning the
chocolate, another burner is required that has a small burner body
and its own discrete gas valve. That will make the low BTU energy
flow requirement possible when the burner's valve is adjusted to
its minimum flow setting.
[0005] The current state of the art in atmospheric gas burners for
surface units of household cooking appliances limits the maximum
and the minimum energy flows of the burner by the physical size of
the burner body. A large burner body will allow a high BTU energy
flow at the maximum flow setting of the burner valve and, although
this high energy flow may be a desired feature, the large burner
body required for this high energy flow limits low BTU energy flow
at the minimum flow setting to a setting that may be higher than
the desired cooking results.
[0006] In general, the current state of the art of surface mounted
gas burners permit a minimum flow adjustment that is at fifteen
percent (15%) of the maximum flow adjustment. There are burners,
however, that have a minimum adjustment less than fifteen percent
(15%), and there also are burners that have a minimum energy flow
setting that is greater than fifteen percent (15%). In order to
perform a cooking operation that needs a small BTU energy flow (low
flame), such as the melting of chocolate (without boiling and
burning the chocolate), the use of another burner with a small
burner body and it's own discrete gas valve that will allow a low
BTU energy flow, when the burner's valve is adjusted to it's
minimum flow setting, would be required.
[0007] But the limit in BTU energy flow range remains dependent on
the physical size of the burner body. A large burner body will
allow a large BTU energy flow at the burner valve's maximum flow
setting but limit the low BTU energy flow setting to a higher flow
than desired for a particular cooking requirement. A burner with a
small body may be able to give the desired low BTU energy flow
setting when its gas valve is adjusted to the minimum flow setting,
but in turn, limit the large BTU energy flow to a smaller flow than
desired for a particular cooking requirement.
[0008] The following presents a summary of the invention, in order
to provide a fundamental understanding of some of the features of
the invention. This summary is not a broad overview of the
invention. It's purpose is to present some concepts of the
invention in a simplified form as a prelude to the more detailed
description that is presented later.
[0009] In accordance with an aspect of the present invention, a
burner assembly is presented with two separate burner bodies, an
inner burner body and an outer burner body, where the inner burner
body is centrally located within the burner assembly and also
centrally located within the outer burner body.
[0010] In accordance with another aspect of the present invention,
the centrally located burner body of the burner assembly is much
smaller than the outer burner body. This difference in size makes
it possible to have a greater range in maximum and minimum BTU
energy output.
[0011] In accordance with yet another aspect of the present
invention, the inner and outer burner bodies form an assembly that
includes a top side, a bottom side, and a burner cap having a top
side and a bottom side. The bottom side of the cap is configured to
join with the top side of the outer burner body.
[0012] In accordance with a further aspect of the invention, a
cover may be installed on the top side of the burner cap and above
the inner burner body. This cover may have a transparent or
translucent insert that allows the visual observation of the flame
on the inner burner body. This cover, when installed, will also
more evenly distribute and disperse the heat from the inner burner
when the inner burner is operating by itself.
[0013] In accordance with yet a further aspect of the invention,
the burner assembly includes a mixing cup with orifice fittings to
supply gas to the two burner bodies. The mixing cup is in fluid
communication with a gas valve that allows the regulation of a gas
supply to both the inner and outer burner bodies and therefore
regulate the maximum and minimum BTU energy output of both burner
bodies.
[0014] Other objects, advantages, novel features and various ways
in which the principles of the invention may be employed and the
present invention is intended to include all such aspects and their
equivalents will become apparent from the following detailed
description of the invention when considered in conjunction with
the drawings and appended claims accompanying the patent.
DESCRIPTION OF THE PRIOR ART
[0015] U.S. Pat. No. 7,040,890 B2 by Silvano Todoli May 9, 2006
describes a gas burner for domestic cooking appliances with a
bowl-shaped body, a toothed crown with a plurality of flame ports
and an upper cap. There is no mention of five flame rings, as in
the current invention nor is there mention of a transparent, heat
resistance portion of the burner cap, as in the current
invention.
[0016] U.S. Pat. No. 6,991,454 B2 by Gore et al. Jan. 31, 2006
reveals a gas burner that simulates a wood burning fire, including
a glowing ember effect. The current invention is designed for a
conventional oven or range, not for a fireplace.
[0017] U.S. Pat. No. 6,951,455 B2 by Jacob Goldman Oct. 4, 2005
shows a system for utilizing a burner with pressurized gas and
forced air to burn gas to provide heat for heating and drying
purposes such as industrial kilns and drying furnaces. Again, the
current invention is used with a gas oven or range found in a
kitchen.
[0018] U.S. Pat. No. 6,939,126 B2 by Michael Boyes, Sep. 6, 2005
entitled "Gas Burner" describes a gas burner for use in a domestic
heating appliance. Prior such devices were fabricated using welds,
which fail over prolonged use. The current invention is not used
for such domestic heating applications.
[0019] U.S. Pat. No. 6,830,045 B2 by Eddie Brock entitled "Gas
Burner Module for a Cooking Appliance" shows a gas burner module
having a base structure preferably formed from stamped steel upon
which is secured at least one gas burner element and a gas orifice
defining member in a predetermined alignment. The gas burner module
is adapted to be mounted in an oven cavity. The current invention
is designed for use on a range top and is substantially more
complex than the Brock patent.
[0020] U.S. Pat. No. 6,780,009 B2 by Uwe Harneit entitled "Gas
Burner Head Assembly" is an earlier patent designed by the inventor
of the current patent. This invention has a burner head, a burner
cap and a burner body, the burner head having 2 flame rings and one
primary jet. The current invention has more than one flame ring, 2
primary jets and one secondary jet.
[0021] U.S. Pat. No. 6,764,303 B2 by Bernard Dane, et al. Jul. 20,
2004 entitled "Gas burner for a Cooker" reveals a gas burner for a
cooker with a burner head having a frustoconical peripheral side
wall and a multiplicity of slots forming flame orifices. This
invention attempts to use the geometry of the frustoconical
peripheral side to create two operating modes on the burner--a low
setting, whereby the small flames remain contained beneath the cap
and heat the cap to allow heat transfer to the cooking vessel, and
a normal or high setting where the flames go around the cap and
heat the cooking vessel directly. The current invention has several
levels of settings due to the multiple flame rings not taught by
this invention.
[0022] U.S. Pat. No. 6,736,631 by William Ferlin, et al. May 18,
2004 entitled "Sealed Gas Burner" teaches a sealed gas burner for a
cooking range that has a venturi tube assembly which is attached
directly to a range top of a cooking range. A burner cap releasably
engages the burner cup and defines a plurality of burner ports. The
burner ports can be cleaned by removing only the burner cap. This
burner appears to only have one flame ring versus at least one main
flame ring, and at least 2 secondary flame rings on the current
invention. This invention is also permanently mounted to the range
top, whereas the current invention can be removed.
[0023] U.S. Pat. No. 6,712,605 B2 by Paolo Moresco Mar. 30, 2004
entitled "Gas Burner for a Cooking Hob" shows a gas burner for a
cooking hob that comprises a burner body with a plurality of
openings for air; a flame dividing element which defines a gas
injector, in conjunction with the burner body and air/gas mixing
chamber, for injecting gas into the mixing chamber and a
converging/diverging duct that defines a Venturi tube downstream of
the gas injector for drawing air into the mixing chamber. The
burner body, the flame-dividing element and the
converging/diverging duct are in the form of a pressed sheet-metal
casing. The current invention differs from this invention by
consisting of a mixing cup, a burner body with at least one main
flame ring, and at least 2 secondary flame rings and a burner cap,
all of which are fabricated as separate components.
[0024] U.S. Pat. No. 6,679,699 B2 by Bernard Dane, et. al. Jan. 20,
2004 entitled "Gas burner for a Cooker" is similar to U.S. Pat. No.
6,764,303 B2 by Bernard Dane, et. al. Jul. 20, 2004 entitled "Gas
burner for a Cooker" mentioned above by the same inventor. This
invention also is limited to fewer settings than the current
invention as mentioned supra.
[0025] U.S. Pat. No. 6,132,205 by Uwe Harneit by the same inventor
as the current invention, describes a burner assembly with 3 flame
rings and easy replacement of the gas jets without having to remove
the unit from the appliance. The current invention is an
improvement on this burner by including more flame rings and a see
through window on top of the burner so a cook can see if the burner
is active.
[0026] U.S. Pat. No. 6,067,978 by Erich J. Schlosser et al. May 30,
2000 entitled "Outdoor Cooking Apparatus with Improved Auxiliary
Gas Burner" is an invention for a complete barbeque grill
comprising a grilling housing and a gas burner mounted adjacent the
grilling housing. The gas burner includes a burner body having a
base chamber, a burner head having at least one air and fuel
mixture exit port and venturii providing a passage between the
burner head and the burner body for the air/fuel mixture. The
current invention incorporates at least one main, and at least 2
secondary sets of holes for the flame rings. Also the current
invention does not have a see through port on its burner cap as
does the current invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The invention is better understood by studying the cited
embodiment illustrated in the appended drawings. These drawings
depict only typical embodiments of the invention and are not
therefore to be considered to be limiting of its scope. The
invention will be described and explained with additional
specificity and detail through the use of the accompanying
drawings:
[0028] Figure one shows an exploded view of the top flow burner
assembly.
[0029] Figure two shows a side view of the top flow burner
assembly.
[0030] Figure three shows a top view of the top flow burner
assembly.
[0031] Figure four shows a first cross section of the top flow
burner assembly.
[0032] Figure five shows a second cross section of the top flow
burner assembly.
[0033] Figure six shows a perspective view of the internal
structure of the mixing cup for the top flow burner assembly.
[0034] Figure seven shows an exploded view of the bottom flow
burner assembly.
[0035] Figure eight shows a side view of the bottom flow burner
assembly.
[0036] Figure nine shows a top view of the bottom flow burner
assembly.
[0037] Figure ten shows a first cross section of the bottom flow
burner assembly.
[0038] Figure eleven shows a second cross section of the bottom
flow burner assembly.
[0039] Figure twelve shows a perspective view of the internal
structure of the mixing cup for the bottom flow burner
assembly.
[0040] Figure thirteen shows the flame ring intensity using varied
step positions.
[0041] Figure fourteen A (14A) shows a detail view of the burner
cap assembly, burner body interface, and flame rings of the outer
burner showing the gas transfer conduit.
[0042] Figure fourteen B (14B) shows another detail view of the gas
transfer conduit.
[0043] Figure fourteen C (14C) shows yet another detail view of the
gas transfer conduit.
[0044] Figure fifteen A (15A) shows a bottom view of the burner
body for a top flow burner in perspective.
[0045] Figure fifteen B (15B) shows a bottom view of the burner
body for a bottom flow burner in perspective.
[0046] Figure sixteen shows a side view of the burner body.
[0047] Figure seventeen shows a top view of the burner body.
[0048] Figure eighteen shows a bottom perspective view of the
secondary burner.
[0049] Figure nineteen shows a side view of the secondary
burner.
[0050] Figure twenty A (20A) shows an exploded view of the burner
cap assembly with a cover plate.
[0051] Figure twenty B (20B) shows an exploded view of the burner
cap assembly with an insert.
[0052] Figure twenty C (20C) shows a perspective view of a simple
burner cap.
[0053] Figure twenty D (20D) shows an exploded view of the burner
cap assembly with a square insert.
[0054] Figure twenty E (20E) shows an exploded view of the burner
cap assembly with a square insert and separate legs.
[0055] Figure twenty F (20F) shows an exploded view of burner cap
assembly with a round insert.
[0056] Figure twenty-one A (21A) shows a cover plate with a
circular cutout.
[0057] Figure twenty-one B (21B) shows a cover plate with a star
shaped cutout.
[0058] Figure twenty-two shows a side view of the burner body for a
reduced height burner.
[0059] Figure twenty-three shows a top perspective view of the
burner body for a reduced height burner.
[0060] Figure twenty-four shows a top perspective view of another
reduced height burner body.
[0061] Figure twenty-five shows a top perspective view of a burner
body having six sides.
[0062] Figure twenty-six shows a top perspective view of a simple
burner cap having six sides.
[0063] Figure twenty-seven shows a top perspective view of a burner
cap assembly having six sides and an insert.
DETAILED DESCRIPTION
[0064] FIG. 1 shows an exploded view of the top flow gas burner
assembly or burner assembly (100). With respect to FIG. 1, a gas
burner assembly (100) is shown. The gas burner assembly (100)
consists of a mixing cup (1), a burner body (2), a burner cap
assembly (3), and a secondary burner (33), and an ignition
electrode (56). FIG. 2 shows that the mixing cup (1) is generally
attached either to a transverse member of an appliance or the base
and/or the top (5) of the appliance. The burner body (2) is shown
resting on the mixing cup (1). The burner body (2) is placed
offsettedly from the mixing cup (1) creating an open air passage or
primary air slot (15). The primary air slot (15) allows air into a
primary air inlet chamber (9). FIG. 1 shows that there are at least
two primary air inlet chambers (9) that feed a main burner chamber
(35) that feed a first, and second flame ring or slot (21,22) as
shown in FIG. 4.
[0065] A cover plate (6) is mounted on top of the burner cap
assembly (3). The number of flame rings that are necessary on an
outer wall (181) of the main burner chamber (35) can be modified so
as to provide the proper BTU capacity by revising the cross
sectional area of a first slot or hole (21a) for the main flame
ring (21) as shown in FIG. 2. In all cases there must be at least
one flame ring (21) or slot (21a) that provides the high intensity
BTU requirement. In FIG. 4 the burner body (2) is shown having a
protruding edge (27) wherein the protruding edge (27) directs
debris and spillover from cooking away from the mixing cup (1) and
onto the appliance top (5).
[0066] Figure six and FIG. 4 shows two primary air inlet chambers
(9), which are located in the outer portions of the mixing cup (1).
In FIG. 4 the mixing cup (1) has a gas supply tube (16) defined in
the bottom portion of the mixing cup (1). A gas supply line (17) is
shown attached to one end of the gas supply tube (16) and provides
flammable gas. The opposing end of the gas supply tube (16) is
shown having as not being drilled through, but the opposing end of
the gas supply tube (16) may also be adapted to accept a plug (19)
(as shown in FIG. 2) to close off the gas supply tube (16). At
least two main gas jets (11) are shown communicating with the gas
supply tube (16) allowing the gas fuel to pass therethrough and
into the primary inlet chamber (9).
[0067] Since common construction of the main gas jets (11) have the
sizes of the orifices or primary gas flow openings (41) small in
diameter, the velocity of the incoming fuel causes a low pressure
zone, thereby suctioning the surrounding air and mixing it with the
fuel.
[0068] In FIG. 4, positioned above each primary gas jet (11), is a
primary gas mixing chamber (13). The primary gas mixing chamber
(13) is offsettedly placed above the primary jet (11) creating a
gap (38) thereby allowing the surrounding air to be mixed with the
flammable gas therein. The primary gas mixing chamber (13) directs
the fuel air mixture into a main burner chamber (35). The main
burner chamber (35) may be of any geometric shape, but as disclosed
in figures one through twenty-six (26) of the instant invention,
circular. Figures twenty five (25) through twenty seven (27) shows
the main burner chamber (35) and the burner assembly (100) may be
of any shape desired.
[0069] In FIG. 1 the outer wall (181) of the main burner chamber
(35) has at least a first series of holes or slots (21a) creating
at least a first flame ring (21). The drawings disclose a first and
second series of holes or slots (21a, 22a) creating a first and
second flame ring (21, 22) defined therethrough. The first series
of holes or slots (21a) are larger than the second series (22a) of
holes and may be slots as shown in the drawings the slots or first
series of holes (21a) being located on an upper portion (106) of
the burner body (2). The first series of holes or slots (21a)
provide for a flame that produces a higher BTU range than of the
second series of holes (22a) alone.
[0070] In FIG. 1 the main burner chamber (35) has at least one
third hole or slot (23a) defined at the top (78) of an inner wall
(34), which creates a sustaining flame button (23) as shown in FIG.
5. The third hole or slot (23a) is of a small diameter so as to
create a very small sustaining flame button (23). The third hole or
slot (23a) is located on the upper portion (78) of the burner body
(2). The first and second series of holes (21a, 22a), and the third
hole or slot (23a) all communicate with the main burner chamber
(35) and provide an ignitable gas-air mixture. The bottom of the
burner cap (74) is shaped similarly to the upper portion (106) of
the burner body (2) and covers the main burner chamber (35).
[0071] In FIGS. 1 and 7 the burner cap assembly (3) therefore has a
centrally located opening (224) theredefined. The cover plate (6)
may have a centrally located hole or opening (256)
theredefined.
[0072] In FIG. 4 a secondary inlet chamber (10) is interposed
between the primary inlet chambers (9). In FIG. 5 a secondary gas
transfer tube (20) is defined in the mixing cup (1) and
communicates with the secondary gas supply line (58) and the
secondary inlet chamber (10). The secondary gas transfer tube (20)
is adapted to receive a secondary gas line (58) which provides
flammable gas thereby. The mixing cup (1) is shown with a central
hole (26) wherein the central hole (26) communicates with the
secondary gas transfer tube (20) and the secondary inlet chamber
(10).
[0073] FIG. 5 shows a secondary jet (12) inserted into the central
hole (26) of the secondary gas transfer tube (20). The present
invention shows that the burner body (2) has a first and second air
slot (28, 29) defined therein. However, the burner body (2) may
have one or more air slots defined therein. In FIG. 1 the burner
body (2) further has a central cavity (102) defined therein, where
the central cavity (102) is surrounded by an inner wall (34) of the
burner body (2). The central cavity (102) communicates with the
surrounding atmosphere via at least one air slot (28). In FIG. 1,
the drawings disclose that the central cavity (102) communicates
with the surrounding atmosphere via the first and second air slots
(28, 29). The secondary inlet chamber (10) draws air from the
primary air slot (15) previously defined. As shown in FIG. 4, the
secondary jet (12) is shown centrally positioned in the gas burner
assembly (100).
[0074] Figure fourteen A (14A) displays the geometry of the
required gas transfer channel (54). The gas transfer channel (54)
allows the central cavity (102) of the burner body (2) to
communicate with the exterior of the burner body (2), providing a
flammable gas/air mixture to thusly provide a sustaining flame (24)
for the first and second flame rings (21, 22). In the present
invention the sustaining flame buttons (23) are located in close
proximity to the gas transfer channel (54) and communicate with the
main burner chamber (35). The location of the sustaining flame
buttons (23) provide an ignition source for the gas/air mixture
that is present within the gas transfer channel (54) and ignites
the first flame ring (21). At least one sustaining flame hole or
slot (24a) is provided between the main burner chamber (35) and the
gas transfer channel (54). The gas transfer channel (54) is thusly
isolated from the main burner chamber (35) excepting the sustaining
flame slot or hole (24a) and a small gap (7) positioned between the
bottom of the burner cap (74) and an upper wall of the transfer
channel (54) which allows a small amount of communication between
the main burner chamber (35) and the gas transfer channel (54)
creating a sustaining flame (24) for the first flame ring (21).
[0075] FIG. 14B displays a different geometry of the required gas
transfer channel (54). In this case, a gas transfer channel (54)
passes through the air slot (261) defined herein and may not be
separated from air slot (261) by a wall. The upper wall of the gas
transfer channel (54) may also have one or more flame buttons (64)
to provide an additional ignition source for the gas/air mixture.
That exits through the gas transfer channel (54) and ignites the
first flame ring (21).
[0076] The burner body (2) may have one or more of the required
transfer channels (54). Figures eighteen and nineteen (18, 19)
disclose the structure of a secondary burner (33). A secondary
transfer tube (31) is attached to a spherically convex base (30) of
the burner body (2) and terminates in an end cap (32). The end cap
(32) has a diameter larger than that of the secondary transfer tube
(31). At the interface of the end cap (32) and the secondary
transfer tube (31), a small groove (52) is defined therein.
Additionally, at the interface of the end cap (32) and the
secondary transfer tube (31) a fifth series of holes (25a) define a
fifth flame ring (25). There is at least 1 hole (25a) defined. The
hole (25a) communicates with the secondary transfer tube (31) and a
secondary mixing chamber (14), and allows a fuel/air mixture to
pass therethrough.
[0077] The secondary burner (33) additionally has a sixth series of
holes (104) defined. The sixth series of holes (104) communicate
with the gas transfer tube (31) and allow the fuel/air mixture to
pass therethrough, adding to the fifth flame ring (25). The
fuel/air mixture also is captured by the groove (52) creating a
sustaining flame thereby. The secondary burner (33) is positioned
over the secondary jet (12) and the secondary inlet chamber (10).
With the end cap (32) having a diameter larger than the secondary
transfer tube (31), the fifth series of holes (25a), sixth series
of holes (104), and the small groove (52) located in the secondary
transfer tube (31) will not be clogged with debris.
[0078] FIGS. 1, 7, 18, and 19 show the secondary burner (33) has a
ring (94) defined thereon, where the ring (94) fits within a
corresponding hole (96) centrally defined within the burner body
(2). The hole (96) is defined within a conical or spherically
convex base (30). The conical or spherically convex base (30)
allows liquid or solid debris to be carried from the secondary
burner (33) through air slots (28, 29) to the appliance cook top
(5) and not fall through into the oven/range. Fasteners (98)
securely hold the secondary burner (33) onto the burner body
(2).
[0079] FIGS. 1 and 7 show the main burner chamber (35) is covered
by the burner cap (75). The burner cap (75) has a top side (88) and
a bottom side (74) where the bottom side (74) has the same shape as
the upper portion (106, 78) of the burner body (2). The bottom side
(74) of the burner cap (75) provides a leak proof fit with the
burner body (2) when mated with the upper portion of the burner
body (106, 78). The burner cap (75) generally is made from a
material dense enough to provide sufficient weight to the burner
cap assembly (3) to prevent dislocation of the burner cap (75) from
the burner body (2), and to prevent the pressure within the main
burner chamber (35) from dislocating the burner cap (75).
[0080] FIGS. 1 and 4 show the bottom side (74) of the burner cap
(75) has a downward protruding boss (76) that is adapted to fit
inside an inner wall (34) of the main burner chamber (35) of the
burner body (2) positionally locating the burner cap (75). A
plurality of upward protruding bosses (80) on the top side (88) of
the burner cap (75) creates a planar surface for the cover plate
(6) to rest upon. The placement of the cover plate (6) on the
bosses (80) creates a gap (81) between the cover plate (6) and the
burner cap (75). Each boss (80) has a through hole (82) defined
therethrough to allow each of a plurality of fasteners (84) to
securely hold the cover plate (6) in place.
[0081] FIGS. 1, 20D, 20E, 20F, 21A and 21B show that the cover
plate (6) may be shaped similarly or differently to the burner body
(2). The cover plate (6) is made from a dense material, that may or
may not have one or more differently shaped openings, or as
disclosed a centrally positioned hole (256) defined therein. In
FIG. 4 the cover plate (6) additionally has a channel (36) defined
therein circumventing the opening (256) therein, which would allow
a burner insert (4) to rest therein. The burner insert (4) may be
made as a complete metallic structure, or as the preferred
embodiment a transparent or translucent heat resistant structure.
The burner insert (4) is shown mounted upon the cover plate (6)
allowing visual observation of the flame of the secondary burner
(33). The present invention discloses the plurality of upward
protruding bosses (80) securing the burner insert (4) into the
channel (36). An advantage of using the cover plate (6) is that no
direct flame is used for cooking. The flame heats the cover plate
(6) which then evenly heats the cookware preventing any severe hot
spots on the cookware. The burner cap (75) has a top side (88).
[0082] As shown in FIG. 6 the mixing cup (1), depending upon the
volume of gas flow may or may not be equipped with vertical flanges
(40) that separate the primary and secondary air inlet chambers (9,
10), and prevent them from drawing air from each other. FIGS. 15A
and 15B show the burner body (2) has vertical locators (42) where
each vertical locator (42) has extensions (39) on their side edges
that positionally locate the burner body (2) in the mixing cup (1).
As seen in FIG. 4 the vertical locators (42) and their extensions
(39) reach into the primary air inlet chamber (9) and prevent
sideways tipping of the burner body (2) over the mixing cup (1).
The vertical locators (42) and their extensions (39) provide the
secure centering of the primary jets (11) and therefore the primary
gas flow opening (41), to the primary gas mixing chamber (13) and
respectively the secondary jet (12) and secondary gas flow opening
(44), to a secondary mixing chamber (14).
[0083] In FIG. 5 an ignition electrode (56) is inserted through the
mixing cup (1) and the burner body (2) and positioned in close
proximity to the end cap (32) of the secondary burner (33). The
ignition electrode (56) is inserted through the mixing cup (1)
where an externally threaded slotted round nut (48) secures the
ignition electrode (56) to the mixing cup (1). This allows the
ignition electrode (56) to provide a spark to ignite the gas-air
mixture exiting the secondary burner (33).
[0084] The ignition electrode (56) in FIG. 5 has shoulder (45) with
which it is set in a first stepped hole (46) from the upper side of
the mixing cup (1). As in FIG. 6, a second stepped hole (47) is
located above the first stepped hole (46) with tapped threading.
After the ignition electrode (56) is set in the first stepped hole
(46), it is fastened with an externally threaded slotted round nut
(48). An ignition wire (49) running in the interior of the ignition
electrode (56) has a terminal (43) attached on one side and on the
upper side has an ignition plate (50). Material for the ignition
wire (49) and the ignition plate (50) are plasma welded together
and the same material is used for both of them.
[0085] Ignition wires (49) in electrodes that are found in the
industry today are partly fabricated from stainless steel.
Stainless steel is known to be heat resistant to 1850.degree. F.
Another material commonly used for the ignition wires is ferritic
FeCrAl alloy, which is known to be heat resistant to 2370.degree.
F. A well-known problem with stainless steel is that when stainless
steel comes into contact with a salt solution, it begins to show
signs of corrosion. Stainless steel is currently known to be used
for the ignition plate (50) on "standard igniters." The standard
method of construction used in the industry is to either rivet or
weld the ignition plate (50) and the ignition wire (49)
together.
[0086] It is known in the engineering and scientific communities
that stainless steel and FeCrAl alloys have different coefficients
of expansion. Because of this, the cycling of heat and cold will
eventually break the weld and allow corrosion to form between the
ignition plate (50) and the ignition wires (49). By using only high
value FeCrAl alloy both for ignition wire (49) and ignition plate
(50) (with a melting point of over 2700.degree. F., the ignition
plate (50) and the ignition wire (49) are plasma welded together.
This will prevent the current problem of the welds cracking due to
different coefficients of expansion.
[0087] A method of equalizing the gas pressure and hereby
equalizing the flame size circumferentially, is as follows and
shown in FIG. 16. The outer wall (181) of the main burner chamber
(35) has a seventh series of holes or slots (112) defined therein.
The seventh series of slots or holes (112) have cross sectional
areas that is less than that of the first series of slots or holes
(21a) defined in the burner body (2). The seventh series of holes
or slots (112) is also located towards the upper portion (106) of
the burner body (2). Interspaced between each of the seventh series
of slots (112) and first series of slots (21a) is an eighth series
of slots or grooves (114), the eighth series of grooves (114)
allowing a flammable gas-air mixture to exit the main burner
chamber (35) and provide a continuous flame for the first flame
ring (21) (not shown). Situated below the eighth series of grooves
(114) may be a ninth series of holes (116). The ninth series of
holes (116) provide additional flammable gas-air for the first
flame ring (21) (not shown). This makes the first flame ring (21)
circumferentially continuous.
[0088] It is general practice to define the positional location of
the first and second series of holes or slots (21a, 22a,) in
angular measures. This would also be true of the eighth series of
grooves (114), the ninth series of holes (116), and the seventh
series of holes or slots (112). For illustrative purposes, the
invention depicts the first series of holes or slots (21a) and the
seventh series of slots (112) being separated by ten degrees
(10.degree.). The second series of holes (22a) is also shown in ten
degree (10.degree.) separation, but second series of holes (22a) is
offset five degrees (5.degree.) from the first series of slots
(21a). The eighth series of grooves (114) is shown offset by five
degrees (5.degree.) from the first series of holes (21a).
[0089] In practice, the gas burner assembly (100) operates as
follows and is shown in Figure thirteen (13). A user will turn the
gas supply knob to a first position, allowing gas fuel to enter
through the secondary gas transfer tube (20) and through the
secondary jet (12) and the secondary inlet chamber (10) mixing with
the air. The pressure from the gas line will allow the flammable
gas-air mixture to flow through the secondary transfer tube (31)
and then be ignited at the fifth series of holes (25a) creating the
fifth flame ring (25)--FIG. 13 step 1. This will create a very low
BTU flame. As the user turns the gas supply knob further (typically
counterclockwise), the control knob will first be at a maximum
setting where the gas fuel will flow into the gas supply tube (16),
then through the main gas jets (11). The pressured gas will mix
with the air in the primary air inlet chamber (9) and then be
transferred through the primary gas mixing chamber (13) into the
main burner chamber (35). The emerging gas-air mixture for the
third flame or sustaining flame button (23) comes from the main
burner chamber (35) and is ignited by the fifth flame ring (25).
The sustaining flame slot (24a) allows communication between the
main burner chamber (35) and the gas transfer channel (54). A
flammable gas/air mixture exits through the sustaining flame slot
(24a) into the gas transfer channel (54) and is ignited by the
sustaining flame button (23a). The ignited gas/air mixture will
flow through the gas transfer channel (54) and provide an ignition
source for the first and second flame rings (21, 22) creating a
high BTU flame--FIG. 13 step 2. While there is flammable gas within
the main burner chamber (35) the sustaining flame buttons (23) will
remain "lit". The sustaining flame hole (24a) provides a constant
source of ignition for the first and second flame rings (21, 22).
All primary air needed for the correct combustion of the gas
mixture enters through the primary air slot (15). Continuing to
rotate the control knob reduces the amount of gas until a minimum
setting is achieved, on the first and second flame rings (21,
22)--FIG. 13 step 3. Further rotation of the control know will shut
off gas flow to the main gas jets (11) extinguishing the first and
second flame rings (21, 22) and leaving only the fifth flame ring
(25) lit--FIG. 13 step 4. Further rotation of the control know to
its end position will also reduce gas flow to the fifth flame ring
(25) to its minimum flow--FIG. 13 step 5.
[0090] Another style of cook top allows air to flow to the burner
from the inside of the cooking device. As shown in FIGS. 7 through
12, a mixing cup (1) is provided. As seen in FIG. 10, the mixing
cup (1) comprises the following elements. A gas supply line (17) is
shown attached to a gas supply tube (16). The gas supply tube (16)
is shown as linear. The gas supply tube (16) has a first end (204)
and a second end (206).
[0091] In FIGS. 7 and 12, the mixing cup (1) has at its top an
attachment plate (212) where the attachment plate (212) has an
outer perimeter (214) and an inner open cavity (216) defined
therein. An upwards protruding boss (218) is shown surrounding the
inner cavity (216) and is adapted to loosely fit within a
pre-defined hole in a cook top (not shown). A central boss (222) is
positioned on the gas supply tube (16) and has a transverse boss
(225) that protrudes from the central boss (222) and has a
secondary gas transfer tube (20) defined therein. The secondary gas
transfer tube (20) has an inlet (228) that is adapted to receive a
gas line (not shown).
[0092] In FIG. 10, at least two main gas jets (11) is placed in
close proximity to the first end (204) and second end (206), where
each main gas jet (11) communicates with the gas supply tube (16)
in order to supply gaseous fuel to the mixing cup (1). FIG. 11
shows a secondary jet (12) placed on a top surface (236) of the
transverse boss (224) communicating with the secondary gas transfer
tube (20) thereby. In FIG. 10, the secondary jet (12) is shown
enclosed with vertical flanges (238, 242). An ignition electrode
mounting plate (51) is shown having a central hole (246) defined
therein in FIG. 12.
[0093] In FIG. 8, the burner body (2) is shown resting on the
mixing cup (1). Positioned above each main gas jet (11) is a
primary gas mixing chamber (13). The primary gas mixing chamber
(13) directs the fuel air mixture into a main burner chamber (35).
As in FIG. 25, the main burner chamber (35) may be any geometric
shape, but as disclosed in the drawings of the instant invention,
circular. FIG. 8, depicts an outer wall (181) of the main burner
chamber (35) has first series of slots or holes (21a) creating a
first flame ring (21) therethrough. The outer wall (181) of the
main burner chamber (35) may additionally have a second series of
slots or holes (22a) defined therethrough creating a second flame
ring (22). The first series of slots (21a) are larger than the
second series of slots (22a) and may be defined as holes as shown
in the drawings. The first series of holes or slots (21a) provide
for a flame that produces a higher BTU range than of the second
series of holes (22a) alone. The number of flame rings that are
necessary on the outer wall (181) of the main burner chamber (35)
can be modified so as to provide the proper BTU capacity by
revising the cross sectional area of the slot or hole (21a) for the
main flame ring (21).
[0094] As shown if FIGS. 7, and 11, the main burner chamber (35)
has at least one third hole or slot (23a) defined on an inner wall
(78), which creates a third flame button (23). The third hole or
slot (23a) is also located on the upper portion (78) of the burner
body (2). The first, second and third, series of holes (21a, 22a,
23a) all communicate with the main burner chamber (35) and provide
a gas-air mixture to be ignited. The bottom (74) of the burner cap
assembly (3) is shaped similarly to the upper portion (106) of the
burner body (2) and covers the main burner chamber (35). The cover
plate (6) therefore may have a centrally located hole (256)
theredefined.
[0095] FIGS. 7 and 11 shows that the burner body (2) has a first
and second air slot (28, 29) defined therein, however, the burner
body (2) may have one or more air slots (28, 29) defined therein.
The burner body (2) further has an annular central cavity (102)
defined therein, where the annular central cavity (102) is
surrounded by an inner wall (34) of the burner body (2). The
annular central cavity (102) communicates with the surrounding
atmosphere via the first and second air slots (28, 29). The
secondary jet (12) is shown centrally positioned in mixing cup (1)
of the gas burner assembly (100A).
[0096] Figure fourteen A (14A) displays the geometry of the
required gas transfer channel (54). The gas transfer channel (54)
allows the central cavity (102) of the burner body (2) to
communicate with the exterior of the burner body (2), providing a
flammable gas/air mixture to thusly provide a sustaining flame (24)
for the first and second flame rings (21, 22) (not shown). In the
present invention the sustaining flame buttons (23) are located in
close proximity to the gas transfer channel (54), and communicate
with the main burner chamber (35) (not shown). The location of the
sustaining flame buttons (23) provide an ignition source for the
gas/air mixture that is present within the gas transfer channel
(54) and ignites the first flame ring (21) (not shown). At least
one sustaining flame hole or slot (24a) is provided between the
main burner chamber (35) and the gas transfer channel (54). The gas
transfer channel (54) is thusly isolated from the main burner
chamber (35) excepting the sustaining flame slot(s) (24a) which
allows a small amount of communication between the main burner
chamber (35) and the gas transfer channel (54) creating a
sustaining flame (24) for the first flame ring (21).
[0097] FIGS. 18 and 19 show that the secondary burner (33) is
structured as follows: a secondary transfer tube (31) is attached
to a spherically convex base (30) (not shown), and terminates in an
end cap (32). The end cap (32) has a diameter larger than that of
the secondary transfer tube (31). At the interface of the end cap
(32) and the secondary transfer tube (31), a small groove (52) is
defined therein. Additionally, at the interface of the end cap (32)
and the secondary transfer tube (31) a fifth series of holes (25a)
defines a fifth flame ring (25). There is at least 1 hole (25a)
defined. The holes (25a) communicate with the secondary transfer
tube (31), and allow a fuel/air mixture to pass therethrough.
[0098] The secondary burner (33) additionally has a sixth series of
holes (104) defined. The sixth series of holes (104) communicate
with the secondary gas transfer tube (31) and allow the fuel/air
mixture to pass therethrough adding to the fifth flame ring (25).
The fuel/air mixture also is captured by the groove (52) creating a
sustaining flame thereby. The secondary burner (33) is positioned
over the secondary jet (12) and therefore the secondary inlet
chamber (222), as shown in FIG. 10.
[0099] Since the end cap (32) has a diameter larger than the
secondary transfer tube (31), the fifth series of holes (25a),
sixth series of holes (104), and the small groove (52) located in
the secondary transfer tube (31) will not be clogged with
debris.
[0100] Continuing with FIGS. 7 and 19, the secondary burner (33)
has an annular ring (94) defined thereon, where the annular ring
(94) fits within a corresponding annular hole (96) centrally
defined within the burner body (2). The annular hole (96) is
defined within conical or spherically convex base (30). The conical
or spherically convex base (30) defines a slope that allows liquid
or solid debris to be carried from the secondary burner (33) to the
appliance cook top (5) through air slots (28, 29) and not fall
through into the oven/range. Fasteners (98) (FIG. 7) securely hold
the secondary burner (33) onto the burner body (2).
[0101] FIGS. 7 and 10 show that the main burner chamber (35) is
covered by the burner cap (75). The burner cap (75) has a top side
(88) and a bottom side (74) where the bottom side (74) is shaped as
the upper portion (106) of the burner body (2). The bottom side
(74) of the burner cap (75) when joined with the upper portion
(106) of the burner body (2) provides a leak proof fit for the
gas-air mixture. The burner cap (75) generally is made from a
material dense enough to provide sufficient weight to the burner
cap assembly (3) to prevent dislocation of the burner cap (75) from
the burner body (2), and to prevent the pressure within the,main
burner chamber (35) from dislocating the burner cap (75).
[0102] The bottom side (74) of the burner cap (75) has a downward
protruding boss (76) that is adapted to fit inside the inner wall
(34) of the main burner chamber (35) of the burner body (2). A
plurality of upward protruding bosses (80) on the top side (88) of
the burner cap (75) creates a planar surface for a cover plate (6),
as shown in FIG. 20D, to rest upon. The placement of the cover
plate (6) on the bosses (80) creates a gap (81) between the cover
plate (6) and the burner cap (75). Each boss (80) has a through
hole (82) defined therethrough to allow each of a plurality of
fasteners (84) to securely hold the cover plate (6) in place.
[0103] The cover plate (6) may be shaped similarly or differently
to the burner body (2). The cover plate (6) is made from a dense
material, that may have one or more differently shaped openings or
holes (256) defined therein. The cover plate (6) additionally has a
channel (36) defined therein circumscribing the opening(s) (256),
which would allow a burner insert (4) to rest therein. The burner
insert (4) may be made as a complete metallic structure, or as the
preferred embodiment a transparent or translucent heat resistant
structure. The burner insert (4) is shown mounted upon the cover
plate (6) allowing visual observation of the flame of the secondary
burner (33). FIG. 20D shows the plurality of upward protruding
bosses (80) is shown securing the burner insert (4) into the
channel (36). An advantage of using the cover plate (6) is that no
direct flame is used for cooking. The flame heats the cover plate
(6) which then evenly heats the cookware preventing any severe hot
spots on the cookware. The burner cap (75) has a top side (88).
[0104] The burner body (2) additionally has vertical locators (42)
where each vertical locator (42) has extensions (39) on their side
edges that positionally locate the burner body (2) in the modified
mixing cup (1). The vertical locators (42) and their extensions
(39) are adapted to slide alongside the vertical flanges (238, 242)
of the mixing cup (1), and prevent sideways tipping of the burner
body (2) over the mixing cup (1). The mixing cup (1) is secured to
the cooktop or range. The burner body (2) is placed upon the mixing
cup (1) sealing the cooktop and preventing air, spilled food and
debris from entering the interior of the cooktop or range. This
forces the burner assembly (100A) to draw air from the interior of
the cooktop or range.
[0105] The upwards protruding boss (218) has a first, and second
slot, (248, 250) defined therein, where the first, and second slots
(248, 250) are adapted to position the vertical locators (42) of
the burner body (2) therein. The vertical locators (42) and their
extensions (39) provide the secure centering of the primary jets
(11) and therefore the primary gas flow opening (41), to the
primary gas mixing chamber (13) and respectively the secondary jet
(12) and secondary gas flow opening (44), to the secondary mixing
chamber (14).
[0106] A method of equalizing the gas pressure and hereby
equalizing the flame size circumferentially, is as follows and
shown in FIGS. 16 and 17. The outer wall (181) of the main burner
chamber (35) has a seventh series of holes or slots (112) defined
therein. The seventh series of slots or holes (112) have cross
sectional areas that is less than that of the first series of slots
or holes (21a) defined in the burner body (2). The seventh series
of holes or slots (112) are also located towards the upper portion
(106) of the burner body (2). Interspaced between each of the
seventh series of holes or slots (112), and first series of slots
(21a) is an eighth series of slots or grooves (114), the eighth
series of grooves (114) allows a flammable gas-air mixture to exit
the main burner chamber (35) and provide a continuous flame for the
first flame ring (21). Situated below the eighth series of grooves
(114) may be a ninth series of holes (116). The ninth series of
holes (116) provide additional flammable gas-air for the first
flame ring (21). This makes the first flame ring (21)
circumferentially continuous.
[0107] It is general practice to define the positional location of
the first, and second, series of holes or slots (21a, 22a) in
angular measures. This would also be true of the eighth series of
grooves (114), the ninth series of holes (116), and the seventh
series of holes or slots (112). For illustrative purposes, the
invention depicts the first series of holes or slots (21a) and the
seventh series of holes or slots (112) being separated by ten
degrees (10.degree.). The second series of holes (22a) is also
shown in ten degree (10.degree.) separation, but the second series
of holes (22a) is offset five degrees (5.degree.) from the first
series of holes or slots (21a). The eighth series of grooves (114)
is shown offset by five (5.degree.) from the first series of holes
or slots (21a).
[0108] While the previous disclosures define a burner that maybe
used in the majority of appliances, there are instances where the
gas burner assembly must be adapted to fit in a more confined area.
FIGS. 22, 23, 24, and 25 disclose a reduced height burner body
(260).
[0109] As can be seen in FIGS. 22 and 23, the reduced height burner
body (260) has an inner wall (78) and an outer wall (181). The
inner wall (78) and the outer wall (181) define a main burner
chamber (35) therebetween. The inner wall (78) defines a central
cavity (102) in the reduced height burner body (260), or (265). At
least one gas transfer channel (54) allows communication between
the central cavity (102) and the exterior of the reduced height
burner body (260). FIGS. 22 and 23 disclose that the central cavity
(102) communicates with the surrounding atmosphere via the first
air slot (262), or (261). As can be contrasted with the earlier
figures, the air slots (262, 261) for this reduced height burner
body (260), or (265), must be bifurcated by the gas transfer
channel (54) in order to communicate with the surrounding
atmosphere.
[0110] The outer wall (181) of the main burner chamber (35) has at
least a first series of slots (21a) creating at least a first flame
ring (21). The drawings disclose a first and second series of holes
or slots (21a, 22a) creating a first and second flame ring (21, 22)
defined therethrough. The first series of slots (21a) are larger
than the second series (22a) of holes. The slots or first series of
holes (21a) are located on an upper portion (106) of the reduced
height burner body (260). The first series of holes or slots (21a)
provide for a flame that produces a higher BTU range than of the
second series of holes (22a) alone
[0111] The number of flame rings that are necessary on an outer
wall (181) of the main burner chamber (35) can be modified so as to
provide the proper BTU capacity by revising the cross sectional
area of a first slot or hole (21a) for the main flame ring (21). In
all cases there must be at least one flame ring (21) that provides
the high intensity BTU requirement. The burner body (260) is shown
having a protruding edge (27) wherein the protruding edge (27)
directs debris and spillover from cooking and onto the appliance
top (5) (not shown). The main burner chamber (35) has at least one
third hole or slot (23a) defined on an inner wall (78), which
creates a sustaining flame button (23). The third hole or slot
(23a) is of a small diameter so as to create a very small
sustaining flame button (23). The third hole or slot (23a) is also
located on the, upper portion (78) of the reduced height burner
body (260). The first and second series of holes or slots (21a,
22a), and the third hole or slot (23a) all communicate with the
main burner chamber (35) and provide an ignitable gas-air
mixture.
[0112] In all other remaining aspects, the reduced height burner
body (260) and (265) operates and is constructed similar to the
burner body (2) disclosed previously.
[0113] Yet another reduced height burner body (265) can be seen in
FIG. 24. The reduced height burner body (265) has an inner wall
(78) and an outer wall (181). The inner wall (78) and the outer
wall (181) define a main burner chamber (35) therebetween. The
inner wall (78) defines a central cavity (102) in the reduced
height burner body (265) at least one gas transfer channel (54)
allows communication between the central cavity (102) and the
exterior of the reduced height burner body (265). This gas transfer
channel (54) is a component of at least one central air slot
(261).
[0114] In all other remaining aspects, this reduced height burner
body (265) operates and is constructed similar to the burner bodies
(2, 260) previously disclosed.
[0115] FIGS. 25 through 27 show a polygonal shaped burner body
(270). The drawings disclose a hexagonal shaped burner body, but it
becomes obvious that the polygonal burner body may have any number
of edges greater than three. FIG. 27 discloses the mating burner
cap (75) or burner cap assembly (3) for the polygonal shaped burner
body.
[0116] Although the foregoing includes a description of the best
mode contemplated for carrying out the invention, various
modifications are contemplated.
[0117] As various modifications could be made in the constructions
herein described and illustrated without departing from the scope
of the invention, it is intended that all matter contained in the
foregoing description or shown in the accompanying drawings shall
be interpreted as illustrative rather than limiting.
* * * * *