U.S. patent application number 10/688512 was filed with the patent office on 2004-05-13 for gas-fueled multi-mode fireplace assembly.
Invention is credited to Tingley, Craig M..
Application Number | 20040089289 10/688512 |
Document ID | / |
Family ID | 32233421 |
Filed Date | 2004-05-13 |
United States Patent
Application |
20040089289 |
Kind Code |
A1 |
Tingley, Craig M. |
May 13, 2004 |
Gas-fueled multi-mode fireplace assembly
Abstract
A modular multiple-mode gas-fueled assembly, comprises a holder.
The holder is arranged to rest within a base grate or on the floor
of a firebox. The holder includes a hollow distribution frame
having an inlet port and a plurality of outlet ports. In one
embodiment, each of the outlet ports are at the distal end of a
respective column of the distribution frame. A plurality of support
plates engage the outer surface of each respective column of the
distribution frame. An imitation candle rests on each respective
support plate. In an alternative embodiment, each of the plurality
of outlet ports are substantially encompassed within imitation logs
that rest on the holder.
Inventors: |
Tingley, Craig M.;
(Marietta, GA) |
Correspondence
Address: |
Robert A. Blaha, Esq.
Thomas, Kayden, Horstemeyer & Risley, LLP
Suite 1750
100 Galleria Parkway
Atlanta
GA
30339
US
|
Family ID: |
32233421 |
Appl. No.: |
10/688512 |
Filed: |
October 17, 2003 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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60419397 |
Oct 18, 2002 |
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Current U.S.
Class: |
126/500 |
Current CPC
Class: |
F24B 1/193 20130101;
F24C 3/006 20130101 |
Class at
Publication: |
126/500 |
International
Class: |
F24B 001/18 |
Claims
What is claimed is:
1. A modular multiple-mode gas-fueled assembly, comprising: a base
grate; and a holder arranged to rest within the base grate, the
holder comprising: a hollow distribution frame having an inlet port
and a plurality of outlet ports, wherein each of the outlet ports
are at the distal end of a respective upright column forming part
of the distribution frame; and a plurality of support plates each
having an aperture for contacting the outer surface of a respective
column of the distribution frame.
2. The assembly of claim 1, wherein the interior diameter of each
respective column of the hollow distribution frame is smaller than
the interior diameter of the inlet port.
3. The assembly of claim 1, wherein the exterior diameter of each
respective upright column forming part of the distribution frame is
smaller at the outlet port than at the end of the upright column
closest to the inlet port.
4. The assembly of claim 1, further comprising a plurality of
imitation candles each having a passage along a major axis for
encompassing a substantial portion of a respective upright
column.
5. The assembly of claim 1, wherein the distribution frame
comprises a plurality of appendages and the base grate comprises
receiving depressions for receiving each respective appendage.
6. The assembly of claim 1, wherein the distribution frame
comprises a plurality of compression fasteners arranged to engage
the base grate.
7. The assembly of claim 1, wherein each of the respective columns
comprises a fuel distribution plate proximal to the outlet
port.
8. The assembly of claim 7, wherein the fuel distribution plate
comprises a plurality of spatially arranged openings.
9. The assembly of claim 7, wherein each respective column
comprises a flame distributor.
10. The assembly of claim 1, further comprising: a gas valve
coupled to the inlet port, the gas valve responsive to a solenoid
electrically coupled to a control circuit.
11. The assembly of claim 10, wherein the control circuit comprises
a plurality of sensors arranged in close proximity to each
respective outlet port.
12. The assembly of claim 11, wherein the control circuit closes
the gas valve when one of the sensors indicates that a flame is not
present at an outlet port.
13. The assembly of claim 12, wherein the control circuit comprises
an override-to-light switch, wherein when the switch is closed the
gas valve remains open regardless of the absence of a flame as
indicated by the sensor at an outlet.
14. The assembly of claim 10, wherein the control circuit converts
light energy into electrical energy when a flame is present and
converts heat energy into electrical energy to energize the
solenoid.
15. The assembly of claim 1, wherein the hollow distribution frame
is configured with a coupler configured to engage a connector of a
gas supply.
16. A modular multiple-mode gas-fueled assembly, comprising: a base
grate comprising: a plurality of support members each having a
first end suited for contacting the floor of a fire box and an
upper end; and a frame coupled to the upper end of the support
members; a holder arranged to rest within the base grate, the
holder comprising a plurality of longitudinally spaced,
transversely disposed cradle members coupled to a hollow
distribution frame, the hollow distribution frame having an inlet
port and a plurality of outlet ports; and a coupler configured to
engage a gas supply.
17. The assembly of claim 16, wherein the holder comprises a
plurality of appendages and the base grate comprises a plurality of
receiving depressions for receiving each respective appendage.
18. The assembly of claim 16, wherein the holder comprises a
plurality of compression fasteners arranged to engage the base
grate.
19. The assembly of claim 16, further comprising: imitation logs
arranged to rest on the holder, the imitation logs further arranged
to define a void for substantially encompassing the hollow
distribution frame.
20. The assembly of claim 16, further comprising: a gas valve
coupled to the inlet port, the gas valve responsive to a solenoid
electrically coupled to a control circuit.
21. The assembly of claim 20, wherein the control circuit comprises
a plurality of sensors arranged in close proximity to each
respective outlet port.
22. The assembly of claim 21, wherein the control circuit closes
the gas valve when one of the sensors indicates that a flame is not
present at an outlet port.
23. The assembly of claim 20, wherein the control circuit comprises
an override-to-light switch, wherein when the switch is closed the
gas valve remains open regardless of the absence of a flame as
indicated by the sensor at an outlet.
24. The assembly of claim 20, wherein the control circuit converts
light energy into electrical energy when a flame is present and
converts heat energy into electrical energy to energize the
solenoid.
25. A method, comprising: providing a support structure for a
gas-fueled holder, the gas-fueled holder having an inlet port and a
plurality of outlet ports; mounting the gas-fueled holder to the
support structure; coupling the gas-fueled holder to a gas supply;
providing a flammable gas at the inlet port; and introducing an
ignition means at an outlet of the gas-fueled holder.
26. The method of claim 25, further comprising substantially
surrounding each of the outlet ports with an imitation candle.
27. The method of claim 25, further comprising substantially
surrounding each of the outlet ports with an imitation log.
28. The method of claim 25, further comprising: determining whether
a flame is burning at each of the outlet ports; and controllably
prohibiting the flow of flammable gas into the inlet port when a
flame is not burning at each of the outlet ports.
29. The method of claim 28, wherein determining whether a flame is
burning at each of the outlet ports comprises converting light
energy into electrical energy and controllably prohibiting the flow
of flammable gas into the inlet port comprises converting heat
energy into electrical energy.
30. A holder, comprising: a hollow distribution frame having an
inlet port and a plurality of outlet ports, wherein each of the
outlet ports are at the distal end of a respective upright column
extending from the distribution frame; and a plurality of support
plates each having an aperture for contacting the outer surface of
a respective column of the distribution frame.
31. The holder of claim 30, wherein the interior diameter of each
respective column of the hollow distribution frame is smaller than
the interior diameter of the hollow distribution frame at the inlet
port.
32. The holder of claim 30, wherein the exterior diameter of each
respective upright column extending from the distribution frame is
smaller at the outlet port than where the upright column is
attached to the distribution frame.
33. The holder of claim 30, further comprising a plurality of
imitation candles each having a passage along a major axis for
encompassing a substantial portion of a respective column of the
distribution frame.
34. The holder of claim 30, wherein each of the respective columns
comprises a fuel distribution plate proximal to the outlet
port.
35. The holder of claim 34, wherein the fuel distribution plate
comprises a plurality of spatially arranged openings.
36. The holder of claim 35, wherein each respective column
comprises a flame distributor.
37. The holder of claim 30, further comprising: a gas valve coupled
to the inlet port, the gas valve responsive to a control circuit
electrically coupled to the gas valve.
38. The holder of claim 37, wherein the control circuit comprises a
plurality of sensors arranged in close proximity to each respective
outlet port.
39. The holder of claim 38, wherein the control circuit closes the
gas valve when one of the sensors indicates that a flame is not
present at an outlet port.
40. The holder of claim 39, wherein the control circuit comprises
an override-to-light switch, wherein when the switch is closed the
gas valve remains open regardless of the absence of a flame as
indicated by a sensor at an outlet.
41. The holder of claim 30, wherein the hollow distribution frame
is configured with a coupler configured to engage a connector of a
gas supply.
42. A method, comprising: providing a gas-fueled holder having an
inlet port and a plurality of outlet ports; coupling the gas-fueled
holder to a gas supply; providing a flammable gas at the inlet
port; substantially surrounding each of the outlet ports with an
imitation fuel; and introducing an ignition means at an outlet of
the gas-fueled holder.
43. The method of claim 42, wherein substantially surrounding each
of the outlet ports comprises substantially surrounding each of the
outlet ports with an imitation candle.
44. The method of claim 42, wherein substantially surrounding each
of the outlet ports comprises substantially surrounding each of the
outlet ports of the gas-fueled holder with imitation logs.
45. The method of claim 42, further comprising: determining whether
a flame is burning at each of the outlet ports; and controllably
prohibiting the flow of flammable gas into the inlet port when a
flame is not burning at each of the outlet ports.
46. The method of claim 45, wherein determining whether a flame is
burning at each of the outlet ports comprises converting light
energy into electrical energy and controllably prohibiting the flow
of flammable gas into the inlet port comprises converting heat
energy into electrical energy.
47. A circuit comprising: a power transistor having an emitter, a
base, and a collector; a solenoid coupled to the collector; a
plurality of thermocouples coupled between the solenoid and the
emitter; and a plurality of photo-sensitive transistors coupled in
series between the collector and the base.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority to co-pending U.S.
Provisional Application entitled, "Gas-Fueled Multi-Mode Fireplace
Grate Assembly," having Serial No. 60/419,397, filed Oct. 18, 2002,
which is entirely incorporated herein by reference.
TECHNICAL FIELD
[0002] The present disclosure generally relates to a multi-mode
gas-fueled assembly. More particularly, a modular gas-fueled
assembly that in one embodiment operates as a gas starter for wood
fuels. In an alternative embodiment, the modular gas-fueled
assembly interfaces with a holder integrated with imitation wood to
simulate a wood burning fire. In other embodiments, the modular
gas-fueled assembly interfaces with other holders arranged for
supporting imitation candles.
BACKGROUND
[0003] Fireplaces are used not only to generate heat for warmth,
but also for the pleasing light and ambience they produce. However,
it is often too warm to necessitate use of the fireplace to
generate heat, particularly in temperate climates. Furthermore,
burning wood fuels for the resultant light, heat, and ambience is
expensive, messy, and wasteful.
[0004] To simulate the appearance of a wood-fueled fire, it is well
known in the art to manufacture fireplace inserts that include
artificial logs and a gas-fueled burner. The inserts typically
include several logs of a concrete, ceramic, or other material
designed to simulate the appearance of wood. A gas burner supplies
a flammable gas in proximity with the logs. When the gas is
ignited, the burning gas produces a flame that simulates a fire
fueled by the imitation wood logs. The fireplace module can include
a tank or other reservoir for storing the flammable gas.
Alternatively, a supply line (e.g., a pipe) coupled to a gas source
can be connected to the burner to introduce the flammable gas to
the burner. Fireplace modules that use artificial log assemblies
provide heat and a pleasing simulated "wood-fueled" fire, while
avoiding the inconvenience of loading and transporting wood into a
home or other structure. Fireplace modules that use artificial log
assemblies further avoid the general uncleanliness associated with
splitting and storing wood, as well as removing ash and other waste
products from conventional wood-burning fireplaces and flues.
[0005] Attempts have been made to use incandescent lighting to
simulate flame. However, the resultant light often does not produce
the flickering effect associated with a burning fuel. An
alternative solution is to use inexpensive candles as a flickering
light source by placing them inside the fireplace. Candles provide
a fueled flame that produces a flickering light. In addition,
candles do not generate enough heat energy to warm an adjacent
room. Thus, candlelight can provide the light from a natural
looking flame while not increasing the temperature of an adjacent
room. However, problems result from introducing candles on the
floor of a fireplace. First, the candles collect soot from the
floor of the fireplace. Second, the candles produce light from the
height of each respective candle flame above the floor of the
fireplace when it may be desirable to direct light outward from the
center or other locations within the fireplace opening.
[0006] A candleholder can be arranged to introduce one or more
candles at various heights and locations within the fireplace.
However, conventional candleholders must be removed from the
fireplace, stored elsewhere, and replaced with a grate when wood is
to be burned in the fireplace or a fireplace module when an
artificial fire is desired.
[0007] Generally, grates have a plurality of legs that elevate the
wood logs above the floor of the fireplace. The grate permits the
wood to be burned safely and the resultant ashes to fall through
the grate for easy cleaning. However, placing candles on a standard
fireplace grate is impractical, as there are no planar surfaces to
support the candles in an upright orientation.
[0008] Accordingly, further improvements are desired.
SUMMARY
[0009] In response to these and other shortcomings of the prior
art, a modular multiple mode gas-fueled assembly is invented and
disclosed. In one embodiment, the modular gas-fueled assembly
operates as a gas starter for wood fuels.
[0010] In an alternative embodiment, the modular gas-fueled
assembly interfaces with a first holder integrated with imitation
wood to simulate a wood burning fire.
[0011] In other embodiments, the modular gas-fueled assembly
interfaces with an alternative holder. The alternative holder
includes hollow columns integrated with support plates for
supporting imitation candles to simulate one or more candle
flames.
[0012] One embodiment includes the alternative holder and a control
circuit coupled to corresponding photosensors or heat sensors in
proximity with each gas-fueled flame. The control circuit opens a
valve to supply flammable gas to each of the imitation candles
and/or the grate of the gas-fueled assembly. When arranged with a
holder having one or more imitation candles, the sensor(s) ensure
that the flammable gas exiting the assembly is burning. When a
flame is not present, the sensor(s) and control circuit cooperate
to close a valve to prevent flammable gas from entering a room
adjacent to the fireplace.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The modular multiple-mode gas-fueled assembly can be better
understood with reference to the following drawings. The components
in the drawings are not necessarily to scale; emphasis instead is
placed upon clearly illustrating the principles of the modular
multiple-mode gas-fueled assembly and methods for using embodiments
of the same.
[0014] FIG. 1 is a front perspective view of an embodiment of a
base grate of the multiple-mode gas-fueled assembly.
[0015] FIG. 2 is a front perspective view of an embodiment of a
holder of the multiple-mode gas-fueled assembly.
[0016] FIG. 3 is a front perspective view of an alternative
embodiment of a base grate of the multiple-mode gas-fueled
assembly.
[0017] FIG. 4 is a front perspective view of an alternative
embodiment of a holder of the multiple-mode gas-fueled assembly
suited for use with imitation logs.
[0018] FIGS. 5A-5C are a set of views that include a front
perspective view and two cross-sectional views that illustrate an
embodiment of imitation logs that can be arranged with the holder
of FIG. 4.
[0019] FIG. 6 is a front perspective view of an alternative
embodiment of a holder of the multiple-mode gas-fueled assembly
suited for use with imitation candles.
[0020] FIG. 7 is a top plan view of an embodiment of a holder of
the multiple-mode gas-fueled assembly suited for use with imitation
candles.
[0021] FIGS. 8A and 8B are a top plan view and a front perspective
view illustrating an embodiment of a support plate arranged with a
respective upright column of the holder of FIGS. 2 and 7.
[0022] FIGS. 9A-9E is a set of perspective and plan views
illustrating various embodiments of a holder of the multiple-mode
gas-fueled assembly suited for use with imitation candles.
[0023] FIG. 10 is a schematic diagram illustrating an embodiment of
a control circuit integrated with the various holders of the
multiple-mode gas-fueled assembly.
[0024] FIG. 11 is a cross-sectional view of an embodiment of a
holder of the multiple-mode gas-fueled assembly suited for use with
imitation candles.
[0025] FIG. 12 is a flow diagram illustrating an embodiment of a
method for associating a gas-fueled flame with an imitation
fuel.
[0026] FIG. 13 is a flow diagram illustrating an alternative
embodiment of a method for associating a gas-fueled flame with an
imitation fuel.
[0027] FIG. 14 is a schematic diagram illustrating an alternative
embodiment of a control circuit that can be integrated with the
various holders of the multiple-mode gas-fueled assembly.
DETAILED DESCRIPTION
[0028] Various aspects of the modular multiple-mode gas-fueled
assembly, having been summarized above, reference will now be made
in detail to the description of the representative assembly
illustrated in the drawings. While the modular multiple-mode
gas-fueled assembly will be described in connection with these
drawings, there is no intent to limit the modular multiple-mode
gas-fueled assembly to the embodiment or embodiments disclosed
therein.
[0029] FIG. 1 is a front perspective view of an embodiment of a
base grate 100 of the multiple-mode gas-fueled assembly. As
illustrated, base grate 100 includes a front frame member 110 and a
rear frame member 112 with a plurality of cradle members 115
coupled between front frame member 110 and rear frame member 112.
Each of the cradle members 115 adjacent to an end of the base grate
100 are coupled to elevation members 113 arranged to contact the
floor of a fireplace. As further illustrated in FIG. 1, cradle
members 115 adjacent to an end of base grate 100 are configured
with a plurality of receiving depressions 150. In accordance with
standard practice, base grate 100 is made from a heat and fire
resistant material or materials suitable for withstanding continued
exposure to wood-fueled and gas-fueled fires.
[0030] In alternative embodiments (not shown), receiving
depressions 150 are located along the upper surface of additional
cradle members 115. In some other embodiments (not shown), cradle
members 115 are not configured with receiving depressions 150.
Preferred embodiments of base grate 100 include ornamental
scrollwork attached to front frame member 110, rear frame member
112, and/or between adjacent cradle members 115. Such ornamental
scrollwork is not illustrated in the embodiment of FIG. 1 for
simplicity of illustration.
[0031] FIG. 2 is a front perspective view of an embodiment of a
holder 200 of the multiple-mode gas-fueled assembly. As illustrated
in FIG. 2, holder 200 includes a hollow distribution frame 210
including a front member 212, a rear member 214, and a plurality of
U-shaped members 222. Each of the U-shaped members 222 has two
upright columns 224. Hollow distribution frame 210 has an inlet
port 220 coupled to a gas supply (not shown) via coupler 240 and a
plurality of outlet ports 225 at the ends of the upright columns
224. Each of the U-shaped members 222 are hollow and are coupled to
the front member 212 and the rear member 214 such that gas flowing
into the hollow distribution frame 210 at inlet port 220 fills the
interior volume of the hollow distribution frame 210 and exits at
each of the outlet ports 225.
[0032] The inner diameter of the hollow distribution frame 210 is
reduced at or before each of the outlet ports 225 to reduce the
outflow of gas at each of the outlet ports 225. Each of the outlet
ports 225 is configured to simulate a wick of a candle.
Consequently, the rate of gas outflow is controlled by the gas
supply and the structure of the hollow distribution frame 210 to
simulate a candle flame when the exiting gas is burning. As will be
explained below, a solenoid actuated gas-supply valve is opened to
enable the flow of gas from a supply through the hollow
distribution frame 210 of holder 200 to supply each of the
"candles" when it is desired to ignite and burn a gas-fueled
imitation candle flame at each of the plurality of outlet ports
225.
[0033] As further illustrated in FIG. 2, a plurality of support
plates 228 closely surround the exterior surface of upright columns
224. For simplicity of illustration, the illustrated embodiment
shows two support plates associated with corresponding upright
columns 224. It should be understood that in embodiments directed
to imitation candles (as explained in further detail below) each
upright column 224 is arranged with a respective support plate 228.
In some embodiments, support plates 228 are arranged with a hole
having a diameter selected to engage the outer surface of the
respective upright column 224 at a desired height along the length
of the upright column 224. In other embodiments, a sleeve or a
plurality of appendages (not shown) are fixed to the outer surface
of the upright column 224 such that the upper surface of the sleeve
(or the appendages) contacts the lower surface of the support plate
228 at the desired height along the length of the upright column
224. Each of the support plates 228 is configured to support an
imitation candle (not illustrated in FIG. 2 for simplicity of
illustration).
[0034] Holder 200 is made of either hollow steel, aluminum, copper,
or other materials. In the embodiment illustrated in FIG. 2, both
the front member 212 and the rear member 214 are provided with a
plurality of appendages 252 for stabilizing the holder 200 when it
is placed on the base grate 100 illustrated in FIG. 1. As indicated
by the dashed lines associating holder 200 with base grate 100,
appendages 252 are received in a corresponding receiving depression
150 of the base grate 100.
[0035] When the holder 200 of FIG. 2 is placed above base grate 100
of FIG. 1, a first embodiment of the modular multiple-mode
gas-fueled assembly is formed.
[0036] FIG. 3 is a front perspective view of an alternative
embodiment of a base grate 300 of the multiple-mode gas-fueled
assembly. Base grate 300 includes a front frame member 310 and a
rear frame member 312 with a plurality of cradle members 315
coupled to each of the front and rear frame members 310, 312. Each
of the cradle members 315 adjacent to an end of the base grate 300
are coupled to elevation members 313 arranged to contact the floor
of a fireplace. Base grate 300 is constructed similarly to base
grate 100 in that it is made from a heat and fire resistant
material or materials suitable for withstanding continued exposure
to wood fueled fires.
[0037] FIG. 4 is a front perspective view of an alternative
embodiment of a holder 400 of the multiple-mode gas-fueled assembly
suited for use with imitation logs. Holder 400 includes a hollow
distribution frame 410 including a front member 412, a rear member
414, and a plurality of U-shaped members 422. Each of the U-shaped
members 422 has two upright columns 424. Hollow distribution frame
410 has an inlet port 420 coupled to a gas supply (not shown) via
coupler 440 and a plurality of outlet ports 425 at the ends of the
upright columns 424. Each of the U-shaped members 422 are hollow
and are coupled to the front member 412 and the rear member 414
such that gas flowing into the hollow distribution frame 410 at
inlet port 420 fills the interior volume of the hollow distribution
frame 410 and exits at each of the outlet ports 425.
[0038] In the embodiment illustrated in FIG. 4, front member 412
and rear member 414 are further attached by solid support members
415 at each end of the holder 400. Solid support members 415 are
not part of the gas distribution network within hollow distribution
frame 410. Solid support members 415 are made from materials
suitable for withstanding continued exposure to gas-fueled
fires.
[0039] Compression fastener 445 is arranged to couple holder 400 to
cradle members 315 at the ends of base grate 300 (FIG. 3). A single
example of a compression fastener 445 is visible in the embodiment
illustrated in FIG. 4. View A-A reveals a cross-sectional view of
the compression fastener 445 in position over support member 415
and cradle member 315. Compression fastener 445 substantially
surrounds solid support member 415 and a lesser portion of the
outer surface of cradle member 315. The arrangement illustrated in
view A-A reveals the relative position of cradle member 315 (FIG.
3) and solid support member 415.
[0040] Holder 400 is made of either hollow steel, aluminum, copper,
or other materials. When holder 400 is combined with base grate 300
(FIG. 3) to form a second embodiment of the modular multiple-mode
gas-fueled assembly.
[0041] In alternative embodiments (not shown), holder 400 can be
arranged to rest upon base grate 300 without compression
fastener(s) 445. In another alternative embodiment, support members
415 are hollow tubes. While support members 415 are hollow tubes
(in the alternative embodiment) there is no intent for the support
members 415 to integrate with the gas circuit formed in the
interior volume of the hollow distribution frame 410.
[0042] FIG. 5 is a front perspective view and two cross-sectional
views that illustrate an embodiment of imitation logs 500 that can
be arranged with the holder 400 of FIG. 4. In the embodiment
illustrated in FIG. 5, imitation logs 500 are arranged in a
relatively orderly fashion with each individual log relatively
parallel to its neighbors. Other arrangements are possible and
contemplated. The imitation logs 500 are manufactured from
concrete, ceramic, and/or other materials that will not burn when
placed in close proximity with a gas-fueled flame.
[0043] View A-A reveals that imitation logs 500 form a void 510
that can completely surround holder 400 (FIG. 4). View B-B further
illustrates that over portions of the length of imitation logs 500,
apertures 515 are provided to allow flames fueled from respective
outlet ports 425 of holder 400 (FIG. 4) to appear from between the
individual logs to simulate a wood-burning fire. Apertures 515 are
arranged to substantially align with respective upright columns 424
of holder 400 (not shown). As in view A-A, void 510 as illustrated
in view B-B surrounds holder 400.
[0044] FIG. 6 is a front perspective view of an alternative
embodiment of a holder 600 of the multiple-mode gas-fueled assembly
suited for use with imitation candles 612. As shown in FIG. 6,
holder 600 includes a hollow distribution frame 610 suitable for
placement on the floor of a fireplace.
[0045] Hollow distribution frame 610 forms a contiguous circuit
that is coupled to inlet port 620. Inlet port 620 is coupled to a
gas supply 650 via coupler 640. Hollow distribution frame 610
further includes a plurality of hollow upright columns 624 coupled
to the contiguous circuit such that gas flowing into the hollow
distribution frame 610 at inlet port 620 fills the interior volume
of the hollow distribution frame 610 and exits at each of the
outlet ports 625.
[0046] Each upright column 624 is arranged with a respective
support plate 628, which supports an imitation candle 612. The
imitation candles 612 surround that portion of the length of
upright columns 624 above the respective support plate 628. As
illustrated by the one displaced imitation candle 612 and view A-A,
the inner diameter of each of the outlet ports 625 is smaller than
the inner diameter at inlet port 620 as shown in view B-B. The
smaller diameter of the outlet ports 625 allows each to simulate a
wick extending from the top of the respective imitation candles
612.
[0047] Hollow distribution frame 610 is just one embodiment of many
that can be used to supply gas to each of the outlet ports 625 of
holder 600. For example, the hollow distribution frame 610 can be
arranged in a "H" configuration. That is, two substantially
parallel tubes interconnected by a single tube substantially
perpendicular to the substantially parallel tubes. In a similar
arrangement, the hollow distribution frame 610 can be shaped in the
likeness of an "I," by using a substantially perpendicular tube
that is relatively longer than the substantially parallel tubes. In
some embodiments, hollow distribution frame 610 may be formed of a
single tube supported by one or more appendages fixed to the outer
surface of the tube and arranged to contact the floor of a
fireplace. Other arrangements are limited only by the imagination
of the designer and the footprint of the fireplace where the holder
600 is used.
[0048] Holder 600 is made of either hollow steel, aluminum, copper,
or other materials. Holder 600 when coupled to a gas supply and
arranged with support plates 628 and imitation candles 612 forms a
third embodiment of the modular multiple-mode gas-fueled
assembly.
[0049] FIG. 7 is a top plan view of an embodiment of a holder 700.
Holder 700 is coupled to gas supply 705 via a number of elements
coupled in series between the gas supply 705 and the plurality of
outlet ports 725 of hollow distribution frame 710. As illustrated,
gas supply 705 enters gas valve 730, which is controllably opened
and closed by solenoid 734. Solenoid 734 is electrically coupled to
control circuit 732.
[0050] Gas valve 730 is connected via a first coupler 735
associated with a first quick connect/disconnect connector 737, a
supply line 738, a second quick connect/disconnect connector 740,
and a second coupler 740 to regulator 745. Regulator 745 is coupled
to inlet port 720 of hollow distribution frame 710.
[0051] In the illustrated embodiment, supply line 738 is a solid
tube. In alternative embodiments (not shown), supply line 738 is
flexible and when connected to couplers 735, 740 provides a
mechanism for quickly connecting and disconnecting various hollow
distribution frames associated with the various embodiments of the
multiple-mode gas-fueled assembly. When the quick
connect/disconnect connectors 737, 740 are not engaged, the flow of
flammable gas from a proximal reservoir or a commercial supplier is
terminated at the respective coupler 735, 742.
[0052] Regulator 745 provides an operator adjustable mechanism for
controllably altering the height of a flame burning in close
proximity to each of the respective outlet ports 725. Thus,
regulator 745 enables an operator to controllably adjust the height
of the flame burning at an imitation candle introduced over each of
the upright columns 724. Note that regulator 745 and the other
elements coupled in series between gas supply 710 and the hollow
distribution frame 710 can be arranged with previously introduced
holders. For example, when coupled to holder 400, regulator 745 can
be used to controllably adjust the height of the flames burning
above each respective outlet port 425, thus enabling an operator to
simulate a wood-burning fire.
[0053] As in the other embodiments, holder 700 is configured with a
plurality of upright columns 724 (nine shown) each with a
respective outlet port 725. In the present embodiment, as shown in
the detail of FIG. 7, each of the outlet ports 725 is provided with
a gas distribution plate 760. The gas distribution plate 760
includes a plurality of openings 762 that enable the gas to escape
from the respective outlet port 725. Gas distribution plate 760 and
openings 762 ensure that escaping gas exiting from the
corresponding outlet port 725 mixes with ambient air producing an
even flame. In some embodiments, gas distribution plate can be
coated with a material that in the presence of a flammable gas
causes the flame to burn with a color similar to that of wax
candles.
[0054] FIGS. 8A and 8B are a top plan view and a front perspective
view illustrating an embodiment of a support plate 828 arranged
with a respective upright column 824. In the embodiment illustrated
in FIG. 8A, support plate 828 is substantially circular with a
substantially circular concentric hole 838 for receiving the
respective upright column 824. When support plate 828 is set over
an upright column 824 having a tapered outer diameter, as
illustrated in FIG. 8B, the support plate 828 engages the outer
surface 856 of the upright column 824 along the length of the
upright column 824 where the diameter of the concentric hole 838
(FIG. 8A) matches the outer diameter of the upright column 824.
[0055] FIGS. 9A-9E are a set of perspective and plan views
illustrating various embodiments of a holder of the multiple-mode
gas-fueled assembly suited for use with imitation candles. As
illustrated in FIG. 9A, upright column 924a extends upward from
hollow distribution frame 910. Support plate 928a engages the outer
surface of upright column 924a as described above. Imitation candle
912a rests on support plate 928a and encompasses a significant
portion of the upright column extending above the upper surface of
support plate 928a.
[0056] As further illustrated in FIG. 9A, a fuel distribution plate
960 is disposed in close proximity to outlet port 925 in upright
column 924a. Fuel distribution plate 960 is described in further
detail in association with FIG. 9C.
[0057] In FIG. 9B, upright column 924b extends upward from hollow
distribution frame 910. Support plate 928b engages the outer
surface of upright column 924b as described above. Imitation candle
912b rests on support plate 928b and encompasses a significant
portion of the upright column extending above the upper surface of
support plate 928b. FIGS. 9A and 9B together illustrate the
versatility of multiple-mode gas-fueled assembly to readily accept
various configurations of imitation candles 912a, 912b and support
plates 928a, 928b.
[0058] Imitation candles 912a, 912b can be constructed of ceramic,
resin, wax, cement, concrete, and/or other materials. Imitation
candles 912a, 912b can vary in style, size, color, etc. Imitation
candles 912a, 912b have an inner diameter greater than the largest
outer diameter of the upright column 924a, 924b, 924c, 924e
providing gas to each respective outlet port 925. The inner
diameter can vary over the length (i.e., the height) of the
imitation candles 912a, 912b such that a chamber that is form
fitting to the exterior surface of the upright column 924a, 924b is
formed. Imitation candles 912a, 912b rest on a respective support
plate 928a, 928b configured to support the imitation candles. In
alternative embodiments, the imitation candles may be fixed to the
respective support plates 928a, 928b.
[0059] FIG. 9C illustrates an alternative embodiment of an upright
column. Upright column 924c is flared. Fuel distribution plate 960
is attached or otherwise rests within the bowl formed by the flared
end of upright column 924c. Fuel distribution plate includes a
plurality of openings 962 for separating and spreading the
flammable gas exiting the upright column 924c to produce a wider
and more distributed flame. The resulting flame produced from a
plurality of similarly configured outlet ports 925 may be used in
connection with each of the holders presented herein. Larger, and
similarly arranged structures can be added to holder 400 to
simulate a wood-burning fire.
[0060] The alternative embodiment illustrated in FIG. 9C further
includes a flame distributor 920. Flame distributor 920 is attached
to the upper surface of fuel distribution plate 960. Flame
distributor 920 includes a base 922 and a wick simulator 924. Wick
simulator, as shown in FIG. 9C extends upward from base 922 such
that it enters that space above the fuel distribution plate 960
where a flame is expected to burn. Flame distributor 920 causes the
gas-fueled flame to spread and flicker to simulate a candle flame.
Wick simulator 922 can be anodized or otherwise coated with a black
material that will not discolor in the presence of a gas-fueled
flame.
[0061] FIG. 9D is a front plan view of the alternative embodiment
of FIG. 9C with a flame 950 present above upright column 924c. The
base 922 of flame distributor 920 is shown in relation to outlet
port 925 of upright column 924c. As described above, the distal end
of wick simulator 922 is disposed within flame 950 and causes flame
950 to flicker over time.
[0062] FIG. 9E is a front plan view of an alternative embodiment of
upright column. As shown in FIG. 9E, the outer and inner diameters
of upright column 9E change abruptly at a location above
distribution frame 910. The abrupt reduction in the diameter of
upright column 924e forms a ledge 970 suitable for supporting an
appropriately sized support plate 928a, 928b (FIGS. 9A, 9B). That
portion of upright column 924e having the reduced diameter can be
anodized or otherwise colored black to simulate a wick.
[0063] FIG. 10 is a schematic diagram illustrating an embodiment of
a control circuit 732 that can be integrated with the various
holders of the multiple-mode gas-fueled assembly. Control circuit
732 is powered by direct-coupled power supply 1002. Power supply
1002 can be a single rechargeable battery, a plurality of
rechargeable batteries, or a plurality of single use batteries.
[0064] The positive terminal of power supply 1002 is coupled to
on/off switch 1004, which supplies energy via series-coupled power
resistors 1006 and 1008 to junction 1009. Junction 1009 is coupled
via resistor 1012 and connector 1013 to a plurality of series
connected sensors 1015. The series connected sensors 1015 are
coupled via conductor 1017 and second connector 1013 and diode 1014
to the base, B, of power transistor 1020. Junction 1009 is also
coupled to the collector, C, of power transistor 1020. When power
transistor 1020 is turned on, solenoid 734, coupled to the emitter,
E, of power transistor 1020, is energized. When solenoid 734 is
energized, valve 730 is opened. When power transistor 1020 is off,
solenoid 734 is not energized and valve 730 is closed, thus
preventing the flow of gas into the inlet port of the hollow
distribution frame of the various embodiments of the multiple mode
gas-fueled assembly. Solenoid 734 is further coupled to electrical
ground.
[0065] Junction 1009 is also coupled to an override-to-light switch
1010, which when closed is coupled to electrical ground via
resistor 1016 and capacitor 1018. When override-to-light switch
1010 is closed, power transistor 1020 remains on regardless of the
condition of the series-coupled sensors 1015. Consequently, when
the override-to-light switch 1010 is closed, valve 730 is opened by
solenoid 734. When the override-to-light switch 1010 is open, each
of the series connected sensors ensures that a flame is present in
close proximity to a respective outlet port of the hollow
distribution frame to ensure gas is not escaping into a room
adjacent to the gas-fueled assembly. When one of the series coupled
sensors 1015 detects that a flame is not present, power transistor
1020 is turned off, thus closing valve 730.
[0066] FIG. 11 is a cross-sectional view of an embodiment of a
support plate 1128 and an imitation candle 1112 illustrating the
arrangement of a sensor mount 1150 in close proximity with an
outlet port 1125. In the embodiment illustrated in FIG. 11, hollow
distribution frame 1110 provides flammable gas to the internal
volume of upright column 1124. A substantially horizontal outer
surface of upright column 1124 provides a ledge for support plate
1128 to rest. The substantially horizontal outer surface of upright
column 1124 marks that point along the length of upright column
1124 where the inner diameter, D, is substantially reduced. That
portion of the upright column 1124 extending upwards from support
plate 1128 is arranged to simulate a wick of a candle. Imitation
candle 1112 rests on support plate 1128. Outlet port 1125 is
proximal to the top of the imitation candle 1112.
[0067] Sensor mount 1150 is attached to the upper surface of
support plate 1128. As illustrated in FIG. 11, sensor mount 1150 is
arranged such that a sensor disposed therein will be able to detect
the presence (or lack thereof) of a flame burning in proximity to
outlet port 1125. Each respective sensor associated with a
gas-fueled assembly is coupled via conductor 1117 in series with
the remaining sensors. The series connected sensors are coupled to
control circuit 732 (FIG. 10). Sensors suited for detecting the
presence of a flame include photosensitive transistors and diodes.
The photosensitive sensors can include sensors designed to detect
the presence of specific ranges of electromagnetic energy.
[0068] In alternative embodiments, (not shown) thermistors can
replace photosensitive sensors to detect the presence of a flame
burning in proximity to a respective outlet port by sensing the
heat generated by the flame. Those skilled in the art will
understand that the arrangement of control circuit 732 will vary
when thermistors are used to detect the presence of a flame.
[0069] FIG. 12 is a flow diagram illustrating an embodiment of a
method for associating a gas-fueled flame with an imitation fuel.
Method 1200 begins with block 1202 where a support structure is
provided for a gas-fueled holder having an inlet port and a
plurality of outlet ports. In block 1204, the gas-fueled holder is
mounted to the support structure. In block 1206, the gas-fueled
holder is coupled to a flammable gas supply. In block 1208, the
flammable gas is provided at an inlet port of the gas-fueled
holder. In block 1210, an ignition means is introduced at an outlet
of the gas-fueled holder. In block 1212, each of the outlet ports
of the gas-fueled holder are substantially surrounded with a
representation of a fuel.
[0070] FIG. 13 is a flow diagram illustrating an alternative
embodiment of a method 1300 for associating a gas-fueled flame with
an imitation fuel. Method 1300 begins with block 1302 where a
gas-fueled holder is provided. The gas-fueled holder has an inlet
port and a plurality of outlet ports. In block 1304, the gas-fueled
holder is coupled to a gas supply. In block 1306, a flammable gas
is provided at the inlet port. In block 1308, each of the outlet
ports of the gas-fueled holder is substantially surrounded with a
representation of a fuel. In block 1310, an ignition means is
introduced at an outlet of the gas-fueled holder.
[0071] FIG. 14 is a schematic diagram illustrating an alternative
embodiment of a control circuit 1432 that can be integrated with
the various holders of the multiple-mode gas-fueled assembly.
Control circuit 1432 is powered by a plurality of thermocouples
1418 with control being directed by a plurality of photo-sensitive
transistor 1415.
[0072] The collector, C, of power transistor 1420 is coupled to
solenoid 734, which is mechanically coupled to gas valve 730.
Solenoid 734 is further coupled via connectors 1417 to a plurality
of thermocouples 1418. The thermocouples 1418 are coupled in series
between connectors 1417. When heat energy is present in proximity
to the thermocouples 1418, a voltage, V, is produced between
solenoid 734 and the emitter, E, of power transistor 1420.
[0073] Collector, C, of power transistor 1420 is further coupled to
base, B, of the power transistor 1420 via resistor 1414, connectors
1413, and a plurality of photo-sensitive transistors 1415. When
light energy is incident upon the photo-sensitive transistors 1415,
power transistor 1420 is turned on. When light energy is not
incident upon the photo-sensitive transistors 1415, power
transistor 1420 is turned off. When power transistor 1420 is turned
on, solenoid 734 is energized. When solenoid 734 is energized,
valve 730 is opened. When power transistor 1420 is off, solenoid
734 is not energized and valve 730 is closed, thus preventing the
flow of gas into the inlet port of the hollow distribution frame of
the various embodiments of the multiple mode gas-fueled
assembly.
[0074] Gas valve 730 is configured with a mechanism that enables an
operator of the gas valve 730 to override the control provided by
solenoid 734. When an operator of the multiple-mode gas-fueled
assembly wants to light a flame at the outlet ports of the holder,
the operator opens gas valve 730 and provides an ignition source at
one or more of the outlet ports. Once the flammable gas is burning,
both heat and light energy are converted by the thermocouples 1418
and the photo-sensitive transistors 1415, respectively such that
control circuit 1432 keeps solenoid 734 energized and gas valve 730
open. When the flammable gas is not burning, the absence of heat
and light energy proximal to the thermocouples 1418 and the
photo-sensitive transistors 1415 causes control circuit 1432 to
de-energize solenoid 734, thus closing gas valve 730.
[0075] It should be emphasized that the above-described embodiments
are merely possible examples of implementations, merely set forth
for a clear understanding of the principles of the modular
multiple-mode gas-fueled assembly. Many variations and
modifications may be made to the above-described embodiment(s) of
the modular multiple-mode gas-fueled assembly without departing
substantially from the principles thereof. All such modifications
and variations, including methods for associating an imitation fuel
with a gas-fueled flame, are intended to be included herein, are
within the scope of this disclosure, and protected by the following
claims.
* * * * *