IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0542877
(2006-10-04)
|
등록번호 |
US-7695273
(2010-05-20)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- United Technologies Corporation
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
23 |
초록
▼
A furnace system responsive to a thermostat includes a pollutant sensor for sensing a pollutant concentration in the furnace system. The pollutant sensor is configured to open when the pollutant concentration reaches a pollutant threshold and close when the pollutant concentration falls below the po
A furnace system responsive to a thermostat includes a pollutant sensor for sensing a pollutant concentration in the furnace system. The pollutant sensor is configured to open when the pollutant concentration reaches a pollutant threshold and close when the pollutant concentration falls below the pollutant threshold. When the thermostat is calling for heat, a furnace controller monitors the pollutant sensor and disables the furnace system for a lockout period if a lockout criterion related to the pollutant sensor is met.
대표청구항
▼
The invention claimed is: 1. A method of controlling a furnace, the method comprising: instituting a combustion cycle; sensing a pollutant concentration of combustion gases produced by the furnace; disabling the furnace when the pollutant concentration reaches a pollutant threshold, wherein the pol
The invention claimed is: 1. A method of controlling a furnace, the method comprising: instituting a combustion cycle; sensing a pollutant concentration of combustion gases produced by the furnace; disabling the furnace when the pollutant concentration reaches a pollutant threshold, wherein the pollutant concentration is related to an average pollutant concentration in the home based on one or more of a size of the home, an infiltration rate of pollutant into the home, a time period delay for the pollutant sensor to open after the pollutant concentration reaches the pollutant threshold, a time period delay for the pollutant sensor to close after the pollutant concentration falls below the pollutant threshold, and a size or operation characteristics of the furnace; enabling the furnace when the pollutant concentration falls below the pollutant threshold; disabling the furnace for a lockout period if the furnace is disabled a threshold number of times; and reinstituting the combustion cycle after the furnace has been disabled for the lockout period. 2. The method of claim 1, wherein the threshold number of times is in the range of 1 to 10. 3. The method of claim 1, wherein the furnace is disabled for the lockout period when the furnace is disabled the threshold number of times within a threshold period of time. 4. The method of claim 1, wherein the threshold period of time is between about 1 hour and about 24 hours. 5. The method of claim 1, wherein the lockout period is in the range of about 1 hour to about 8 hours. 6. A furnace system responsive to a thermostat, the furnace system comprising: a pollutant sensor for sensing a pollutant concentration in combustion gases produced by a furnace, wherein the pollutant sensor opens when the pollutant concentration reaches a pollutant threshold and closes when the pollutant concentration falls below the pollutant threshold; and a furnace controller that, when the thermostat is calling for heat, monitors the pollutant sensor and disables the furnace system for a lockout period if a lockout criterion relating the sensed pollutant concentration in combustion gases to an average pollutant concentration in a home is met, wherein relating the sensed pollutant concentration to the average pollutant concentration is based on one or more of a size of the home, an infiltration rate of pollutant into the home, a time period delay for the pollutant sensor to open after the pollutant concentration reaches the pollutant threshold, a time period delay for the pollutant sensor to close after the pollutant concentration falls below the pollutant threshold, and a size or operation characteristics of the furnace. 7. The furnace system of claim 6, wherein the pollutant sensor is electrically connected between the thermostat and at least one of a power supply and a fuel supply controller. 8. The furnace system of claim 6, wherein the lockout criterion is met if the pollutant sensor opens a threshold number of times. 9. The furnace system of claim 8, wherein the threshold number of times is in the range of 1 to 10. 10. The furnace system of claim 6, wherein the lockout criterion is met if the pollutant sensor opens the threshold number of times within a threshold period of time. 11. The furnace system of claim 10, wherein the threshold period of time is between about 1 hour and about 24 hours. 12. The furnace system of claim 10, wherein the threshold period of time is one heating cycle duration. 13. The furnace system of claim 6, wherein the lockout period is in the range of about 1 hour to about 8 hours. 14. A method of controlling a furnace after a call for heat from a thermostat, wherein the furnace includes a pollutant sensor that opens when the pollutant concentration reaches a pollutant threshold and closes when the pollutant concentration falls below the pollutant threshold, the method comprising: instituting a combustion cycle; monitoring a condition of the pollutant sensor positioned in pollutant gases produced by the furnace; disabling the furnace for a lockout period if a lockout criterion relating the monitored pollutant concentration in combustion gases to an average pollutant concentration in a home is met, wherein relating the sensed pollutant concentration to the average pollutant concentration is based on one or more of a size of the home, an infiltration rate of pollutant into the home, a time period delay for the pollutant sensor to open after the pollutant concentration reaches the pollutant threshold, a time period delay for the pollutant sensor to close after the pollutant concentration falls below the pollutant threshold, and a size or operation characteristics of the furnace; and reinstituting the combustion cycle after the furnace has been disabled for the lockout period. 15. The method of claim 14, wherein monitoring a condition of the pollutant sensor comprises determining whether the pollutant sensor has opened. 16. The method of claim 14, wherein the pollutant sensor is electrically connected between the thermostat and at least one of a furnace power supply and a furnace fuel supply controller. 17. The method of claim 14, wherein the lockout criterion is met if the pollutant sensor opens a threshold number of times. 18. The method of claim 17, wherein the threshold number of times is in the range of 1 to 10. 19. The method of claim 14, wherein the lockout criterion is met if the pollutant sensor opens the threshold number of times within a threshold period of time. 20. The method of claim 19, wherein the threshold period of time is between about 1 hour and about 24 hours. 21. The method of claim 19, wherein the threshold period of time is one heating cycle duration. 22. The method of claim 14, wherein the lockout period is in the range of about 1 hour to about 8 hours.
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