U.S. patent application number 09/967650 was filed with the patent office on 2002-11-07 for water heater.
Invention is credited to Carlton, Clifford, Vago, Otto Z..
Application Number | 20020162517 09/967650 |
Document ID | / |
Family ID | 26824858 |
Filed Date | 2002-11-07 |
United States Patent
Application |
20020162517 |
Kind Code |
A1 |
Carlton, Clifford ; et
al. |
November 7, 2002 |
Water heater
Abstract
A water heater having a combustion air inlet and a flue gas
outlet. A manifold assembly is provided which includes a box
section, a flue gas port, a combustion air port and a combustion
air inlet collar. The combustion air inlet collar communicates with
the combustion air port through the interior of the box section. A
combination combustion air inlet and flue gas outlet assembly is
provided and includes a combustion air inlet tube and a flue gas
outlet tube mounted concentrically inside the combustion air tube.
The combustion air tube is connected at one end to the box section
of the manifold and is connected at the other end with the
atmosphere. The flue tube is connected at one end to the flue gas
inlet port on the manifold and communicates with the atmosphere at
the other end. An air blower is mounted on the water heater. A
combustion air tube is connected at one end to the combustion air
port of the manifold and is connected at its other end to an air
assembly box mounted on the top of the water heater. The air blower
is operable to draw fresh combustion air through the combustion air
tube and then into the combustion chamber of the water heater. A
flue gas tube is connected at one end to the flue gas port of the
manifold and is connected at the other end to the blower, which is
operable to exhaust the flue gases from the combination combustion
air inlet and flue gas outlet assembly.
Inventors: |
Carlton, Clifford;
(Goodlettsville, TN) ; Vago, Otto Z.; (Burns,
TN) |
Correspondence
Address: |
MICHAEL BEST & FRIEDRICH L L P
SUITE 3300
100 E. WISCONSIN AVENUE
MILWAUKEE
WI
53202
US
|
Family ID: |
26824858 |
Appl. No.: |
09/967650 |
Filed: |
September 29, 2001 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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|
09967650 |
Sep 29, 2001 |
|
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09410105 |
Sep 30, 1999 |
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60126611 |
Mar 27, 1999 |
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Current U.S.
Class: |
122/14.2 ;
122/17.1 |
Current CPC
Class: |
F23J 2213/203 20130101;
F23L 17/04 20130101 |
Class at
Publication: |
122/14.2 ;
122/17.1 |
International
Class: |
F24H 009/20; F24H
001/00; F23C 005/00 |
Claims
We claim:
1. A water heater having a combustion chamber, a combustion air
inlet and a flue gas outlet located at the top of the water heater,
comprising: (a) a manifold assembly (16) including a box section
(30), a flue gas port (32), a combustion air port (34) and a
combustion air inlet collar (36), said combustion air inlet collar
(36) communicating with said combustion air port (34) through the
interior of said box section (30); (b) a combination combustion air
inlet and flue gas outlet assembly (14) including a combustion air
inlet tube member (18), a flue gas outlet tube member (20) mounted
concentrically inside said tube member (18), said tube member (18)
connected at one end to said box section (30) at said combustion
air inlet collar (36), said tube member (18) communicating with the
atmosphere and its other end, said tube member (20) connected at
one end to said flue gas inlet port (32) and communicating with the
atmosphere at its other end; (c) a combustion air assembly box (44)
mounted on the top of the water heater; (d) a combustion air tube
(42) connected at one end to said combustion air port (34) and
connected at its other end to said combustion air assembly box
(44); (e) a flue gas tube (38) communicating at one end with the
flue gas outlet of the water heater and connected at the other end
to said flue gas port (32); and (f) an air blower (40) operable to
draw combustion air into the water heater through said combustion
air tube (42) and further operable to draw flue gas out of the
water heater through flue gas outlet tube (38).
2. A combination combustion air and flue gas exhaust system for a
water heater comprising: (a) a manifold assembly (16) including a
box section (30), a flue gas port (32), a combustion air port (34)
and a combustion air inlet (36), said combustion air inlet collar
(36) communicating with said combustion air port (34) through the
interior of said box section (30); (b) a combination combustion air
inlet and flue gas outlet assembly (14) including a combustion air
inlet tube member (18), a flue gas outlet tube member (20) mounted
concentrically inside said tube member (18), said tube member (18)
connected at one end to said box section (30), said tube member
(18) communicating with the atmosphere and its other end, said tube
member (20) connected at one end to said flue gas port (32) and
communicating with the atmosphere at its other end; (c) a
combustion air assembly box (44) mounted on the top of the water
heater; (d) a combustion air tube (42) connected at one end to said
combustion air port (34) and connected at its other end to said air
assembly box (44); (e) a flue gas tube (38) communicating at one
end with the flue gas outlet of the water heater and connected at
the other end to said flue gas port (32); and (f) an air blower
operable to draw combustion air into the water heater through said
combustion air tube (42) and further operable to draw flue gas out
of the water heater through flue gas outlet tube (38).
3. A combination combustion air and flue gas exhaust system for a
water heater according to claim 1 in which there is a combustion
air assembly box (44) through which combustion air is drawn into
the combustion chamber of the water heater by the operation of said
air blower (40).
4. A water heater having a combustion chamber, a combustion air
inlet and a flue gas outlet located at the top of the water heater
comprising: (a) a manifold assembly (16) including a box section
(30), a flue gas port (32), a combustion air port (34) and a
combustion air inlet (36), said combustion air inlet (36)
communicating with said combustion air port (34) through the
interior of said box section (30); (b) a combination combustion air
inlet and flue gas outlet assembly (14) including a combustion air
inlet tube member (18), a flue gas outlet tube member (20) mounted
concentrically inside said tube member (18), said tube member (18)
connected at one end to said box section (30), said tube member
(18) communicating with the atmosphere and its other end, said tube
member (20) connected at one end to said flue gas port (32) and
communicating with the atmosphere at its other end; (c) a
combustion air assembly box (44) mounted on the top of the water
heater; (d) a combustion air tube (42) connected at one end to said
combustion air port (34) and connected at its other end to said air
assembly box (44); (e) a flue gas tube (38) communicating at one
end with the flue gas outlet of the water heater and connected at
the other end to said flue gas port (32); and (f) an air blower
operable to draw combustion air into the water heater through said
combustion air tube (42) and further operable to draw flue gas out
of the water heater through flue gas outlet tube (38).
5. A water heater having a combustion chamber, a combustion air
inlet and a flue gas outlet comprising: (a) an air blower (40)
mounted on a water heater; (b) a combustion air tube (38) connected
to said air blower (40), said air blower (40) operable to draw
fresh combustion air through said tube (42) and then into the
combustion chamber of the water heater; (c) a flue gas tube (38)
connected to the flue gas outlet of the water heater; (d) a
manifold assembly (16) communicating with said flue gas tube (38)
and said combustion air tube (42), said manifold assembly (16)
adapted to receive and conduct combustion air to said combustion
air tube (42), said manifold assembly (16) further adapted to
receive flue gas from said flue gas tube (38); and (e) a
combination combustion air inlet and flue gas outlet assembly (14)
adapted to receive combustion air from the atmosphere and conduct
said combustion air to said manifold assembly (16), said
combination combustion air inlet and flue gas outlet assembly (14)
further adapted to receive flue gas from said manifold assembly
(16) and conduct said flue gas to the atmosphere.
6. A water heater according to claim 3 in which said combination
combustion air inlet and flue gas outlet assembly (14) includes a
combustion air inlet tube member (18) and a flue gas outlet tube
member (20) mounted concentrically inside said tube member (18),
said tube member (18) adapted to conduct atmospheric air to said
manifold assembly (16), said tube member (20) adapted to conduct
flue gas from said manifold assembly (16) to the atmosphere.
7. A water heater according to claim 5 in which said manifold
assembly (16) includes a box section (30) through which combustion
air flows from said combination combustion air inlet and flue gas
outlet assembly (14) to said combustion air tube (42).
8. A method of heating water in a water heater, including a
water-tight tank (11), a combustion chamber (19), a gas burner (13)
in the combustion chamber, a flue gas outlet tube (17) connected to
the combustion chamber (19), a blower (40), a manifold assembly
(16) having a combustion air port (34) and a flue gas port (32), a
combustion air tube (42) connected to the combustion air port (34)
at one end and communicating with the combustion chamber (19) at
the other end, a flue gas tube (38) connected to the flue gas port
(32) at one end and communicating with the flue gas outlet tube
(17) of the water heater at the other end, comprising the steps of:
(a) energizing the blower (40) to draw combustion air into the
manifold assembly (16) and then from the manifold assembly (16)
through the combustion air tube (42) to the combustion chamber (19)
of the water heater; (b) mixing combustion air with gas produced by
the gas burner (13) and burning the mixture in the combustion
chamber (19) to produce heat; (c) energizing the blower (40) to
draw flue gases out of the water heater and into the flue gas tube
(38) which carries the flue gases to the manifold assembly
(16).
9. The method of claim 8 in which combustion air flows out the
manifold assembly (16) and into the combustion air tube (42)
through a combustion air port (34) on the manifold assembly
(16).
10. The method of claim 9 in which flue gases flowing from the flue
gas tube (38) to the manifold assembly (16) flow through the flue
gas port (32) of the manifold assembly (16).
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0002] Not applicable.
REFERENCE TO MICROFICHE APPENDIX
[0003] Not applicable.
BACKGROUND OF THE INVENTION
[0004] This invention relates to a water heater and more
specifically to a water heater that is directly vented to the
outside through the wall of the space in which the water heater is
located. An air blower forces combustion air through a manifold
assembly and then into the combustion chamber of the water heater.
The air blower also draws products of combustion from the
combustion chamber through the manifold assembly and then out to
the atmosphere.
[0005] A water heater of this general type is shown and described
in U.S. Pat. No. 5,020,512. The present invention is believed to be
a patentable improvement over this prior water heater.
BRIEF SUMMARY OF THE INVENTION
[0006] A water heater having a combustion air inlet and a flue gas
outlet including an air blower mounted on the heater. The blower is
operable to draw fresh combustion air through the combustion air
tube and into the combustion chamber of the heater. A flue gas tube
is connected to the flue gas outlet. A manifold assembly is in
communication with the combustion air tube and the flue gas tube.
The manifold assembly is adapted to receive and conduct combustion
air to the combustion air tube. The manifold assembly is further
adapted to receive flue gas from the flue gas tube and direct the
flue gas through the assembly and then out to atmosphere. A
combination combustion air inlet and flue gas outlet assembly is
adapted to receive combustion air from the atmosphere and conduct
the combustion air to the manifold assembly. The combination
combustion air inlet and flue gas outlet assembly is further
adapted to receive flue gas from the manifold and to conduct the
flue gas to the atmosphere.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] FIG. 1 is a partially schematic vertical side elevation view
of a water heater equipped with the combustion air and the products
of combustion flue gas piping system of the present invention;
[0008] FIG. 2 is a horizontal cross-sectional view of the
combustion air and products of combustion flue gas piping
system;
[0009] FIG. 3 is a top view of the manifold assembly used in the
system shown in FIG. 1; and
[0010] FIG. 4 is a right-hand end elevation view of the manifold
assembly shown in FIG. 3.
DETAILED DESCRIPTION OF THE INVENTION
[0011] Referring to the drawings, FIG. 1 shows a gas-fired water
heater 10 equipped with a combustion air/flue gas piping system 12
as shown in FIGS. 2, 3 and 4. As shown in FIG. 1, the internal
construction of water heater 10 includes a watertight tank 11, a
gas-fired burner 13 mounted in a combustion chamber 19, a
passageway 15 to conduct combustion air to the burner and a flue
tube 17 for carrying the products of combustion out the top of the
water heater.
[0012] As shown in FIG. 2, piping system 12 includes a manifold
assembly 16 and a combination combustion air inlet and flue gas
outlet assembly 14.
[0013] Assembly 14 is comprised of an outer tube member 18 and an
inner tube member 20 mounted concentrically inside tube member 18.
The inner tube 20 extends through the wall 22 of the space in which
the heater is installed.
[0014] A perforated guard member 24 is mounted on the end of tube
20 outside of wall 22. A fitting 25 is mounted on the end of tube
20. The fitting 25 has side openings 26 and an end cap 28.
[0015] Referring to FIGS. 2, 3 and 4, manifold assembly 16 is
mounted on the right-hand end of assembly 14 adjacent the inside
surface of wall 22.
[0016] Manifold assembly 16 is comprised of a manifold box section
30 and a flue gas port 32 mounted in box 30 and extending through
the box as shown in FIG. 3. A combustion air port 34 is mounted on
the face of box 30 and communicates with the interior of box 30 as
shown in FIG. 3. Assembly 16 has a collar 36 on box 30 which, as
shown in FIG. 2, fits inside the left end of tube 18.
[0017] As shown in FIGS. 1 and 2, a combustion air tube 42 is
connected at one end to combustion air port 34 of manifold assembly
16 and is connected at its other end to an air assembly box 44
mounted on the top of heater 10. A flue gas tube 38 is connected at
one end to the flue gas port 32 of manifold assembly 16 and is
connected at its other end to a blower 40 mounted at one end of air
assembly box 43. An internal baffle 45 functions to direct
combustion air from tube 42 into passageway 15. The baffle 45
further functions to direct flue gas from flue tube 17 to tube
38.
Operation
[0018] With blower 40 (FIG. 1) energized, fresh combustion air will
be drawn into combination combustion air inlet and flue gas outlet
assembly 14 through perforated guard 24. Combustion air flows
through tube 18 around the outside of tube 20 as shown by the
arrows in FIG. 2. The fresh combustion air exits into manifold
assembly 16 as shown in FIG. 2. The combustion air flows through
manifold box section 30 to outlet port 34.
[0019] From port 34, the air flows through tube 42 to the air
assembly box 44 (FIG. 1). Box 44 has an internal baffle 45 therein,
which directs the flow of combustion air into passageway 15 of the
water heater. Blower 40 draws the combustion air into the internal
passageway 15 of heater 10, which directs the flow to the burner 13
in the combustion chamber of the heater 10.
[0020] The products of combustion, i.e., flue gases, flow upwardly
inside the heater through tube 17 and exit the heater into tube 38
after passing through air assembly box 43 as shown by the arrows in
FIG. 1. The flue gases flow through tube 38 to inlet port 32 of
manifold 16. The flue gases then flow through port 32 into tube 20
(FIG. 2), then through tube 20 and then out to the outside
atmosphere through openings 26 at the end of tube 20 (FIG. 2).
[0021] While the invention herein has been shown and described in
what is presently conceived to be the most practical preferred
embodiment, it will be obvious to one of ordinary skill in the art
that many modifications may be made thereof within the scope of the
invention, which scope is not to be limited except by the appended
claims.
* * * * *