Furnace, a method for operating a furnace and a furnace controller configured for the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F24H-003/00
F23N-005/20
F23N-003/08
F23N-005/24
F24H-003/02
출원번호
US-0684133
(2017-08-23)
등록번호
US-10253981
(2019-04-09)
발명자
/ 주소
Kowald, Glenn W.
Easterling, Darcy Q.
출원인 / 주소
Lennox Industries Inc.
대리인 / 주소
Winstead PC
인용정보
피인용 횟수 :
0인용 특허 :
44
초록▼
A controller for a gas furnace, a computer-usable medium for implementing a method and a gas furnace are disclosed herein. In one embodiment, the controller includes: (1) an interface configured to receive a heating call and (2) a processor configured to enable an inducer of the gas furnace at a low
A controller for a gas furnace, a computer-usable medium for implementing a method and a gas furnace are disclosed herein. In one embodiment, the controller includes: (1) an interface configured to receive a heating call and (2) a processor configured to enable an inducer of the gas furnace at a low speed based on the heating call and ignite the gas furnace at a high fire operation when determining a low fire pressure switch of the gas furnace is open.
대표청구항▼
1. A gas furnace comprising: a controller configured to operate the gas furnace, the controller comprising: an interface configured to receive a heating call for a low fire operation of the gas furnace; anda processor configured to perform following steps, wherein each step directly follows the next
1. A gas furnace comprising: a controller configured to operate the gas furnace, the controller comprising: an interface configured to receive a heating call for a low fire operation of the gas furnace; anda processor configured to perform following steps, wherein each step directly follows the next step:enable an inducer of the gas furnace to operate at a low speed in response to receiving the heating call;determine whether a low fire pressure switch of the gas furnace is open;responsive to the determination that the low fire pressure switch is open, switch the inducer to operate at a high speed;determine whether the low fire pressure switch and a high fire pressure switch are closed; andresponsive to the determination that the low fire pressure switch and the high fire pressure switch are closed, ignite the gas furnace at a high fire operation. 2. The gas furnace of claim 1, further comprising: a heat exchanger; andwherein the inducer is configured to draw combustion air through the heat exchanger. 3. The gas furnace of claim 2, wherein: the low fire pressure switch is configured to close when flow of the combustion air has been established for the low fire operation; andthe high fire pressure switch is configured to close when flow of the combustion air has been established for the high fire operation. 4. The gas furnace of claim 1, wherein the processor is configured to operate the gas furnace at the high fire operation for a preset period of time. 5. The gas furnace of claim 1, wherein the processor is configured to: responsive to the determination that the low fire pressure switch is open, ignite the gas furnace at the high fire operation. 6. The gas furnace of claim 1, wherein the processor is configured to: responsive to the determination that the low fire pressure switch is open, initiate a lockout routine. 7. The gas furnace of claim 1, wherein the processor is configured to: responsive to the determination that the high fire pressure switch is open, initiate a lockout routine. 8. The gas furnace of claim 1, wherein the processor is configured to: responsive to the determination that either the low fire pressure switch or the high fire pressure switch is open, initiate a restart routine. 9. The gas furnace of claim 1, wherein the low fire pressure switch and the high fire pressure switch are configured to measure combustion air pressure on a discharge side of the inducer. 10. The gas furnace of claim 9, wherein the low fire pressure switch is configured to indicate when the combustion air pressure supports the low fire operation of the gas furnace. 11. The gas furnace of claim 9, wherein the high fire pressure switch is configured to indicate when the combustion air pressure supports the high fire operation of the gas furnace. 12. A controller for a gas furnace, the controller comprising: a processor configured to perform following steps, wherein each step directly follows the next step: enable an inducer of the gas furnace to operate at a low speed in response to receiving a heating call for a low fire operation;determine whether a low fire pressure switch of the gas furnace is open;responsive to the determination that the low fire pressure switch is open, switch the inducer to operate at a high speed;determine whether the low fire pressure switch and a high fire pressure switch are closed; andresponsive to the determination that the low fire pressure switch and the high fire pressure switch are closed, automatically ignite the gas furnace at a high fire operation. 13. The controller of claim 12, wherein the processor is configured to operate the gas furnace at the high fire operation for a preset period of time. 14. The controller of claim 12, wherein the processor is configured to: responsive to the determination that the low fire pressure switch is open, ignite the gas furnace at the high fire operation. 15. The controller of claim 12, wherein the processor is configured to: responsive to the determination that the low fire pressure switch is open, initiate a lockout routine. 16. The controller of claim 12, wherein the processor is configured to: responsive to the determination that the high fire pressure switch is open, initiate a lockout routine. 17. The controller of claim 12, wherein the processor is configured to: responsive to the determination that either the low fire pressure switch or the high fire pressure switch is open, initiate a restart routine. 18. A method of operating a gas furnace, the method comprising performing following steps, wherein each step directly follows the next step: receiving a heating call for a low fire operation of the gas furnace;enabling, using a processor, an inducer of the gas furnace to operate at a low speed in response to receiving the heating call;determining, using the processor, whether a low fire pressure switch of the gas furnace is open;responsive to the determination that the low fire pressure switch is open, switching the inducer to operate at a high speed;determining, using the processor, whether the low fire pressure switch and a high fire pressure switch are closed; andresponsive to the determination that the low fire pressure switch and the high fire pressure switch are closed, igniting the gas furnace at a high fire operation; andresponsive to the determination that either the low fire pressure switch or the high fire pressure switch is open, initiating, using the processor, a restart routine. 19. The method of claim 18, wherein the processor is configured to operate the gas furnace at the high fire operation for a preset period of time. 20. The method of claim 18, wherein the low fire pressure switch and the high fire pressure switch are configured to measure combustion air pressure on a discharge side of the inducer.
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이 특허에 인용된 특허 (44)
Ballard Gary W. (Indianapolis IN) Mamot Robert M. (Plainfield IN), Adaptive microprocessor control system and method for providing high and low heating modes in a furnace.
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