US20130224671A1 - Unitary igniter and flame sensor - Google Patents
Unitary igniter and flame sensor Download PDFInfo
- Publication number
- US20130224671A1 US20130224671A1 US13/780,981 US201313780981A US2013224671A1 US 20130224671 A1 US20130224671 A1 US 20130224671A1 US 201313780981 A US201313780981 A US 201313780981A US 2013224671 A1 US2013224671 A1 US 2013224671A1
- Authority
- US
- United States
- Prior art keywords
- burner
- igniter
- flame sensor
- furnace
- mounting base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q13/00—Igniters not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/06—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs structurally associated with fluid-fuel burners
- F23Q7/10—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs structurally associated with fluid-fuel burners for gaseous fuel, e.g. in welding appliances
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2229/00—Flame sensors
Definitions
- the subject matter disclosed herein relates to furnaces. More specifically, the subject matter disclosed herein relates to burners for furnaces.
- the furnace includes multiple heat exchanger cells or tubes with a burner, typically an in-shot burner, dedicated to each heat exchanger cell.
- the burners are typically lit by a single igniter at an end burner, and the flame is carried to the other burners via carryovers extending between the burners.
- a flame sensor is located at an end burner, at an opposite end from the igniter. Sensing flame in that location indicates that the flame has successfully carried over from the burner where the igniter is located.
- An integral igniter and flame sensor for a furnace includes a mounting base installable on an access port to a burner in a furnace.
- An igniter extends from the mounting base toward the burner, and a flame sensor extends from the mounting base toward the same burner.
- a burner assembly for a furnace includes at least one burner and an integral igniter and flame sensor.
- the integral igniter and flame sensor includes a mounting base installable on an access port to the burner. An igniter extends from the mounting base toward the burner, and a flame sensor extends from the mounting base toward the same burner.
- a furnace includes a housing and a heat exchange portion located in the housing.
- the heat exchange portion includes a heat exchanger and a burner assembly located to heat the heat exchanger.
- the burner assembly includes at least one burner and at least one integral igniter and flame sensor.
- the integral igniter and flame sensor includes a mounting base installable to an access port to the burners in the furnace. An igniter extends from the mounting base toward the at least one burner and a flame sensor extends from the mounting base toward the same burner.
- FIG. 1 is a schematic view of an embodiment of a furnace assembly
- FIG. 2 is a schematic view of an embodiment of a burner assembly for a furnace
- FIG. 3 is a schematic view of an embodiment of an integral igniter and flame sensor for a furnace
- FIG. 4 is a schematic view of another embodiment of an integral igniter and flame sensor for a furnace
- FIG. 5 is a schematic view of another embodiment of an integral igniter and flame sensor for a furnace.
- FIG. 6 is a schematic view of yet another embodiment of an integral igniter and flame sensor.
- FIG. 1 Shown in FIG. 1 is an embodiment of a furnace assembly 10 .
- the furnace assembly 10 comprises a housing 12 .
- the housing 12 includes three primary chambers, a blower chamber 14 containing a blower 16 , a heat exchange chamber 18 containing a heat exchanger 20 , and a portion of a burner assembly 22 , and a vestibule chamber 24 , which also contains a portion of burner assembly 22 .
- the burner assembly 22 heats the heat exchanger 20 , and as the blower 16 blows an air flow 26 across the heat exchanger 20 , thermal energy is transferred from the heat exchanger 20 to the air flow 26 .
- the burner assembly 22 includes a plurality of burners 28 , which in some embodiments are premix burners 28 .
- the embodiment of FIG. 2 includes 3 burners 28 , but it is to be appreciated that burner assemblies 22 with other quantities of burners 28 are contemplated within the present scope.
- Each burner 28 includes at least one orifice 30 for injecting fuel or a fuel/air mixture from a manifold 48 toward the heat exchanger 20 for combustion.
- an igniter 36 shown in FIGS. 3-5 ) is located at each of the burners 28 to ignite the fuel ejected from the orifice 30 , typically between the burner 28 and the heat exchanger 20 .
- an igniter/flame sensor assembly 32 is located at each burner 28 of the plurality of burners 28 , eliminating the need for crossovers of the prior art between burners 28 .
- the igniter/flame sensor assembly 32 includes a mounting base 34 , typically of a ceramic or metallic material, that when installed in the furnace 10 , fits over a burner access port 38 .
- the igniter 36 extends from the mounting base 34 , and is positioned at the burner 28 .
- the igniter/flame sensor assembly 32 further includes a flame sensor 42 extending from the same mounting base 34 as the igniter 36 to sense a flame at the burner 28 when the burner 28 is operating.
- a flame sensor 42 extending from the same mounting base 34 as the igniter 36 to sense a flame at the burner 28 when the burner 28 is operating.
- the flame sensor 42 is a screen flame sensor 42 including a sleeve 44 with a plurality of sleeve openings 46 surrounding the igniter 36 .
- the flame sensor 42 is a substantially helical shape wound around the igniter 36 .
- the flame sensor 42 is partially surrounded by a semi-circular igniter 36 . It is to be appreciated, however, that these integral flame sensor 42 and igniter 36 configurations are merely exemplary, and other flame sensor 42 and igniter 36 configurations are contemplated within the present disclosure.
- the igniter 36 and the flame sensor 42 may extend from the same mounting base 34 substantially parallel to each other, without overlapping. While the embodiments of FIGS. 3 , 4 and 5 illustrate hot surface igniters 36 , other types of igniters may be utilized.
- the flame sensor 42 and a sparker 48 serving as the igniter in this embodiment, both extend from the common mounting base 34 .
- the sparker 48 includes two sparker rods 50 , that when one sparker rod 50 is energized with an electric current and the other sparker rod 50 is grounded, causes a spark to occur at a gap 52 between tips 54 of the sparker rods 50 .
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
Abstract
An integral igniter and flame sensor for a furnace includes a mounting base installable in an access port to a burner in a furnace. An igniter extends from the mounting base toward at least one burner of the furnace, and a flame sensor extends from the same mounting base toward the at least one burner. A furnace includes a housing and a heat exchange portion located in the housing. The heat exchange portion includes a heat exchanger and a burner assembly located to heat the heat exchanger. The burner assembly includes at least one burner and an integral igniter and flame sensor. The integral igniter and flame sensor includes a mounting base installable in an access port to the at least one burner. An igniter extends from the mounting base toward the at least one burner and a flame sensor extends from the same mounting base toward the same burner.
Description
- This application claims priority to U.S. provisional application, 61/604,937, filed Feb. 29, 2012, the entire contents of which are incorporated herein by reference.
- The subject matter disclosed herein relates to furnaces. More specifically, the subject matter disclosed herein relates to burners for furnaces.
- In a typical gas-fired warm air furnace, the furnace includes multiple heat exchanger cells or tubes with a burner, typically an in-shot burner, dedicated to each heat exchanger cell. The burners are typically lit by a single igniter at an end burner, and the flame is carried to the other burners via carryovers extending between the burners. To ensure that the burners are all lit, a flame sensor is located at an end burner, at an opposite end from the igniter. Sensing flame in that location indicates that the flame has successfully carried over from the burner where the igniter is located.
- Emissions requirements, such as those for NOR, placed on gas-fired furnaces have led to the desire to utilize pre-mix burners in furnaces. Use of such burners results in lower NO emissions compared to in-shot burners, but replacing in-shot burners with pre-mix burners in a typical furnace structure results in excessively high temperatures in the vestibule and on the heat exchanger cell wall.
- An integral igniter and flame sensor for a furnace includes a mounting base installable on an access port to a burner in a furnace. An igniter extends from the mounting base toward the burner, and a flame sensor extends from the mounting base toward the same burner.
- A burner assembly for a furnace includes at least one burner and an integral igniter and flame sensor. The integral igniter and flame sensor includes a mounting base installable on an access port to the burner. An igniter extends from the mounting base toward the burner, and a flame sensor extends from the mounting base toward the same burner.
- A furnace includes a housing and a heat exchange portion located in the housing. The heat exchange portion includes a heat exchanger and a burner assembly located to heat the heat exchanger. The burner assembly includes at least one burner and at least one integral igniter and flame sensor. The integral igniter and flame sensor includes a mounting base installable to an access port to the burners in the furnace. An igniter extends from the mounting base toward the at least one burner and a flame sensor extends from the mounting base toward the same burner.
- These and other advantages and features will become more apparent from the following description taken in conjunction with the drawings.
- The subject matter, which is regarded as the invention, is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other features, and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying drawings in which:
-
FIG. 1 is a schematic view of an embodiment of a furnace assembly; -
FIG. 2 is a schematic view of an embodiment of a burner assembly for a furnace; -
FIG. 3 is a schematic view of an embodiment of an integral igniter and flame sensor for a furnace; -
FIG. 4 is a schematic view of another embodiment of an integral igniter and flame sensor for a furnace; -
FIG. 5 is a schematic view of another embodiment of an integral igniter and flame sensor for a furnace; and -
FIG. 6 is a schematic view of yet another embodiment of an integral igniter and flame sensor. - The detailed description explains embodiments of the invention, together with advantages and features, by way of example with reference to the drawings.
- Shown in
FIG. 1 is an embodiment of afurnace assembly 10. Thefurnace assembly 10 comprises ahousing 12. Thehousing 12 includes three primary chambers, ablower chamber 14 containing ablower 16, aheat exchange chamber 18 containing aheat exchanger 20, and a portion of aburner assembly 22, and avestibule chamber 24, which also contains a portion ofburner assembly 22. Theburner assembly 22 heats theheat exchanger 20, and as theblower 16 blows anair flow 26 across theheat exchanger 20, thermal energy is transferred from theheat exchanger 20 to theair flow 26. - Referring to
FIG. 2 , theburner assembly 22 includes a plurality ofburners 28, which in some embodiments arepremix burners 28. The embodiment ofFIG. 2 includes 3burners 28, but it is to be appreciated that burner assemblies 22 with other quantities ofburners 28 are contemplated within the present scope. Eachburner 28 includes at least oneorifice 30 for injecting fuel or a fuel/air mixture from amanifold 48 toward theheat exchanger 20 for combustion. To light theburners 28, an igniter 36 (shown inFIGS. 3-5 ) is located at each of theburners 28 to ignite the fuel ejected from theorifice 30, typically between theburner 28 and theheat exchanger 20. In this embodiment, an igniter/flame sensor assembly 32 is located at eachburner 28 of the plurality ofburners 28, eliminating the need for crossovers of the prior art betweenburners 28. As shown inFIGS. 3-5 , the igniter/flame sensor assembly 32 includes amounting base 34, typically of a ceramic or metallic material, that when installed in thefurnace 10, fits over aburner access port 38. Theigniter 36 extends from themounting base 34, and is positioned at theburner 28. - Referring now to
FIG. 3 , the igniter/flame sensor assembly 32 further includes aflame sensor 42 extending from thesame mounting base 34 as theigniter 36 to sense a flame at theburner 28 when theburner 28 is operating. By integrating theflame sensor 42 with theigniter 36 on thecommon mounting base 34, it eliminates a need for a separate mounting base, and a separate opening at theburners 28 for the flame sensor, thus reducing paths for thermal energy transfer into thevestibule chamber 24. - In one embodiment, as shown in
FIG. 3 , theflame sensor 42 is ascreen flame sensor 42 including asleeve 44 with a plurality ofsleeve openings 46 surrounding theigniter 36. In another embodiment, as shown inFIG. 4 , theflame sensor 42 is a substantially helical shape wound around theigniter 36. In still another embodiment, as shown inFIG. 5 , theflame sensor 42 is partially surrounded by asemi-circular igniter 36. It is to be appreciated, however, that theseintegral flame sensor 42 and igniter 36 configurations are merely exemplary, andother flame sensor 42 and igniter 36 configurations are contemplated within the present disclosure. For example, in another embodiment, theigniter 36 and theflame sensor 42 may extend from thesame mounting base 34 substantially parallel to each other, without overlapping. While the embodiments ofFIGS. 3 , 4 and 5 illustratehot surface igniters 36, other types of igniters may be utilized. In another embodiment, as shown inFIG. 6 , theflame sensor 42 and asparker 48, serving as the igniter in this embodiment, both extend from thecommon mounting base 34. Thesparker 48 includes twosparker rods 50, that when onesparker rod 50 is energized with an electric current and theother sparker rod 50 is grounded, causes a spark to occur at agap 52 betweentips 54 of thesparker rods 50. - While the invention has been described in detail in connection with only a limited number of embodiments, it should be readily understood that the invention is not limited to such disclosed embodiments. Rather, the invention can be modified to incorporate any number of variations, alterations, substitutions or equivalent arrangements not heretofore described, but which are commensurate with the spirit and scope of the invention. Additionally, while various embodiments of the invention have been described, it is to be understood that aspects of the invention may include only some of the described embodiments. Accordingly, the invention is not to be seen as limited by the foregoing description, but is only limited by the scope of the appended claims.
Claims (17)
1. An integral igniter and flame sensor assembly for a furnace comprising:
a mounting base installable in an access port to the burner in a furnace;
an igniter extending from the mounting base toward at least one burner of the furnace; and
a flame sensor extending from the mounting base toward the at least one burner.
2. The assembly of claim 1 , wherein the flame sensor extends at least partially around a perimeter of the igniter.
3. The assembly of claim 2 , wherein the flame sensor comprises a screen having a plurality of screen openings around the igniter.
4. The assembly of claim 2 , wherein the flame sensor comprises a helical coil wrapped around the igniter.
5. The assembly of claim 2 , wherein the igniter extends at least partially around a perimeter of the flame sensor.
6. A burner assembly for a furnace comprising:
at least one burner; and
an integral igniter and flame sensor including:
a mounting base installable in an access port to the at least one burner in the furnace;
an igniter extending from the mounting base toward the at least one burner; and
a flame sensor extending from the mounting base toward the at least one burner.
7. The burner assembly of claim 6 , wherein the at least one burner is a premix burner.
8. The burner assembly of claim 6 , wherein the flame sensor extends at least partially around a perimeter of the igniter.
9. The burner assembly of claim 8 , wherein the flame sensor comprises a screen having a plurality of screen openings around the igniter.
10. The burner assembly of claim 8 , wherein the flame sensor comprises a helical coil wrapped around the igniter.
11. The burner assembly of claim 6 , wherein the igniter extends at least partially around a perimeter of the flame sensor.
12. A furnace comprising:
a housing;
a heat exchange portion disposed in the housing including:
a heat exchanger; and
a burner assembly located to heat the heat exchanger, the burner assembly including:
at least one burner; and
an integral igniter and flame sensor including:
a mounting base installable in an access port to the at least one burner in the furnace;
an igniter extending from the mounting base toward the at least one burner; and
a flame sensor extending from the mounting base toward the at least one burner.
13. The furnace of claim 12 , wherein the at least one burner is a premix burner.
14. The furnace of claim 12 , wherein the flame sensor extends at least partially around a perimeter of the igniter.
15. The furnace of claim 14 , wherein the flame sensor comprises a screen having a plurality of screen openings around the igniter.
16. The furnace of claim 14 , wherein the flame sensor comprises a helical coil wrapped around the igniter.
17. The furnace of claim 12 , wherein the igniter extends at least partially around a perimeter of the flame sensor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/780,981 US20130224671A1 (en) | 2012-02-29 | 2013-02-28 | Unitary igniter and flame sensor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US201261604937P | 2012-02-29 | 2012-02-29 | |
US13/780,981 US20130224671A1 (en) | 2012-02-29 | 2013-02-28 | Unitary igniter and flame sensor |
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Publication Number | Publication Date |
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US20130224671A1 true US20130224671A1 (en) | 2013-08-29 |
Family
ID=49003245
Family Applications (1)
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US13/780,981 Abandoned US20130224671A1 (en) | 2012-02-29 | 2013-02-28 | Unitary igniter and flame sensor |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140099585A1 (en) * | 2012-10-06 | 2014-04-10 | Coorstek, Inc. | Igniter Shield Device and Methods Associated Therewith |
US20190041062A1 (en) * | 2017-08-07 | 2019-02-07 | Zhejiang Liju Boiler Co., Ltd. | Combustion Chamber |
WO2021112570A1 (en) * | 2019-12-06 | 2021-06-10 | 엘지전자 주식회사 | Gas furnace |
US11125439B2 (en) | 2018-03-27 | 2021-09-21 | Scp Holdings, An Assumed Business Name Of Nitride Igniters, Llc | Hot surface igniters for cooktops |
USD1032808S1 (en) * | 2021-10-14 | 2024-06-25 | Heat Founder Group Co., Ltd. | Heating ignition device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4207053A (en) * | 1978-08-18 | 1980-06-10 | Essex Group, Inc. | Igniter and flame sensor assembly for gas burning appliance |
US5556272A (en) * | 1994-06-27 | 1996-09-17 | Thomas & Betts Corporation | Pilot assembly for direct fired make-up heater utilizing igniter surrounded by protective shroud |
US5601071A (en) * | 1995-01-26 | 1997-02-11 | Tridelta Industries, Inc. | Flow control system |
US7056013B2 (en) * | 2003-10-28 | 2006-06-06 | Honeywell International Inc. | Sensor arrangement having an air inflow pattern for preventing direct debris impact |
US20090145419A1 (en) * | 2007-12-05 | 2009-06-11 | Bekaert Combustion Technology B.V. | Furnace heat exchanger |
-
2013
- 2013-02-28 US US13/780,981 patent/US20130224671A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4207053A (en) * | 1978-08-18 | 1980-06-10 | Essex Group, Inc. | Igniter and flame sensor assembly for gas burning appliance |
US5556272A (en) * | 1994-06-27 | 1996-09-17 | Thomas & Betts Corporation | Pilot assembly for direct fired make-up heater utilizing igniter surrounded by protective shroud |
US5601071A (en) * | 1995-01-26 | 1997-02-11 | Tridelta Industries, Inc. | Flow control system |
US7056013B2 (en) * | 2003-10-28 | 2006-06-06 | Honeywell International Inc. | Sensor arrangement having an air inflow pattern for preventing direct debris impact |
US20090145419A1 (en) * | 2007-12-05 | 2009-06-11 | Bekaert Combustion Technology B.V. | Furnace heat exchanger |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140099585A1 (en) * | 2012-10-06 | 2014-04-10 | Coorstek, Inc. | Igniter Shield Device and Methods Associated Therewith |
US9285120B2 (en) * | 2012-10-06 | 2016-03-15 | Coorstek, Inc. | Igniter shield device and methods associated therewith |
US20190041062A1 (en) * | 2017-08-07 | 2019-02-07 | Zhejiang Liju Boiler Co., Ltd. | Combustion Chamber |
US11499717B2 (en) * | 2017-08-07 | 2022-11-15 | Zhejiang Liju Boiler Co., Ltd. | Combustion chamber |
US11125439B2 (en) | 2018-03-27 | 2021-09-21 | Scp Holdings, An Assumed Business Name Of Nitride Igniters, Llc | Hot surface igniters for cooktops |
US11493208B2 (en) | 2018-03-27 | 2022-11-08 | Scp Holdings, An Assumed Business Name Of Nitride Igniters, Llc | Hot surface igniters for cooktops |
US11788728B2 (en) | 2018-03-27 | 2023-10-17 | Scp R&D, Llc | Hot surface igniters for cooktops |
WO2021112570A1 (en) * | 2019-12-06 | 2021-06-10 | 엘지전자 주식회사 | Gas furnace |
USD1032808S1 (en) * | 2021-10-14 | 2024-06-25 | Heat Founder Group Co., Ltd. | Heating ignition device |
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Owner name: CARRIER CORPORATION, CONNECTICUT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CAREY, COLIN WILLIAM;ROY, WILLIAM J.;SIGNING DATES FROM 20130221 TO 20130226;REEL/FRAME:029898/0157 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |