Using weather data in heat pump defrost control
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F25D-021/06
F25D-021/00
F25B-030/02
F25B-049/02
F25B-047/02
출원번호
US-0040069
(2013-09-27)
등록번호
US-9719715
(2017-08-01)
발명자
/ 주소
Qu, Yi
Hrejsa, Pete
출원인 / 주소
LENNOX INDUSTRIES INC.
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
A method of operating a heat pump system is provided, the heat pump system having at least a controller and configured to operate at least two defrost cycles. The method comprises receiving, at the controller, weather data for a defined geographic area proximate to an installed location of the heat
A method of operating a heat pump system is provided, the heat pump system having at least a controller and configured to operate at least two defrost cycles. The method comprises receiving, at the controller, weather data for a defined geographic area proximate to an installed location of the heat pump system; and selecting, based on said weather data, one of the at least two defrost cycles.
대표청구항▼
1. A controller for a heat pump system, the heat pump system configured to operate at least two defrost cycles, the controller configured to: receive weather data for a defined geographic area proximate to an installed location of the heat pump system, the weather data comprising a humidity level;de
1. A controller for a heat pump system, the heat pump system configured to operate at least two defrost cycles, the controller configured to: receive weather data for a defined geographic area proximate to an installed location of the heat pump system, the weather data comprising a humidity level;determine whether the heat pump system is operating in a freezing precipitation condition based at least in part upon the humidity level;determine whether to operate a de-icing cycle based at least in part upon the weather data, wherein the de-icing cycle comprises operating a heating strip on an orifice ring comprising an outdoor fan system of the heat pump system;select, based at least in part upon determining whether the heat pump system is operating in the freezing precipitation condition, one of the at least two defrost cycles; andoperate the de-icing cycle prior to operating the one of the at least two defrost cycles, based at least in part upon determining whether to operate the de-icing cycle based at least in part upon the weather data. 2. The controller according to claim 1, further configured to communicate with data sources external to the heat pump system. 3. The controller according to claim 1, further configured to communicate with components of the heat pump system via a data bus. 4. The controller according to claim 1, further configured to communicate with sources external to the heat pump system via a wireless network protocol. 5. The controller according to claim 1, wherein the defrost cycle selected is a primary defrost cycle, said primary defrost cycle comprising initiating a cooling cycle wherein an evaporating heat exchanger operates as a condenser thereby increasing a temperature proximate the heat exchanger, the primary defrost cycle terminating upon achieving a first predetermined threshold temperature of the heat exchanger. 6. The controller according to claim 1, wherein the selected defrost cycle comprises a secondary defrost cycle, said secondary defrost cycle comprising initiating a cooling cycle wherein an evaporating heat exchanger operates as a condenser thereby increasing a temperature proximate the heat exchanger, the secondary defrost terminating upon achieving a second threshold temperature of the heat exchanger. 7. The controller according to claim 1, wherein the selected defrost cycle comprises a secondary defrost cycle, said secondary defrost cycle comprising initiating a cooling cycle wherein an evaporating heat exchanger operates as a condenser thereby increasing a temperature proximate the heat exchanger, the secondary defrost terminating after a predetermined period of time has passed. 8. A method of operating a heat pump system, the heat pump system having at least a controller and configured to operate at least two defrost cycles, the method comprising: receiving, at said controller, weather data for a defined geographic area proximate to an installed location of the heat pump system, the weather data comprising a humidity level;determining, at said controller, whether the heat pump system is operating in a freezing precipitation condition based at least in part upon the humidity level;determining, at said controller, whether to operate a de-icing cycle based at least in part upon the weather data, wherein the de-icing cycle comprises operating a heating strip on an orifice ring comprising an outdoor fan system of the heat pump system;selecting, based at least in part upon determining whether the heat pump system is operating in the freezing precipitation condition data, one of the at least two defrost cycles; andoperating the de-icing cycle prior to operating the one of the at least two defrost cycles, based at least in part upon determining whether to operate the de-icing cycle based at least in part upon the weather data. 9. The method according to claim 8, wherein said method is performed during manufacturing or testing of said heat pump system. 10. The method according to claim 8, wherein said controller is further configured to communicate with data sources external to the heat pump system. 11. The method according to claim 8, wherein the defrost cycle selected is a primary defrost cycle, said primary defrost cycle comprising initiating a cooling cycle wherein an evaporating heat exchanger operates as a condenser thereby increasing a temperature proximate the heat exchanger, the primary defrost cycle terminating upon achieving a first predetermined threshold temperature of the heat exchanger. 12. The method according to claim 8, wherein the selected defrost cycle comprises a secondary defrost cycle, said secondary defrost cycle comprising initiating a cooling cycle wherein an evaporating heat exchanger operates as a condenser thereby increasing a temperature proximate the heat exchanger, the secondary defrost terminating upon achieving a second threshold temperature of the heat exchanger. 13. The method according to claim 8, wherein the selected defrost cycle comprises a secondary defrost cycle, said secondary defrost cycle comprising initiating a cooling cycle wherein an evaporating heat exchanger operates as a condenser thereby increasing a temperature proximate the heat exchanger, the secondary defrost terminating after a predetermined period of time has passed.
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