A defrosting control method and device for automatic detection of frosting amount in heat pump system
A heat pump system and frosting amount technology, applied in the field of heat pumps, can solve the problems of poor thermal comfort of the air-conditioning heat pump system and the inability of the air-conditioning heat pump system to accurately control the defrosting time of the outdoor heat exchanger, etc.
Active Publication Date: 2018-07-24
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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Problems solved by technology
[0004] Embodiments of the present invention provide a defrosting control method and device for automatic detection of the amount of frosting in a heat pump system, which can solve the problem that the air-conditioning heat pump system in the prior art cannot accurately control the defrosting time of the outdoor heat exchanger, resulting in the failure of the air-conditioning heat pump system. The problem of poor thermal comfort
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[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0023] An embodiment of the present invention provides a defrosting control method for automatic detection of the amount of frosting in a heat pump system, which is applied to a controller, and the controller controls the heat pump system to perform defrosting. Heater provides heat exchange air flow, such as figure 2 As shown, the defrosting control method for automatic detection of the amount of frosting in the heat pump system includes:
[0024] 201. Determine ...
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The embodiment of the present invention discloses a defrosting control method and device for automatic detection of the amount of frosting in a heat pump system, which relates to the technical field of heat pumps and can solve the problem that the air-conditioning heat pump system in the prior art cannot accurately control the defrosting time of the outdoor heat exchanger , resulting in poor thermal comfort of the air-conditioning heat pump system. The specific solution is: determine whether the running time of the heat pump system is greater than or equal to the first preset time; when the running time of the heat pump system is greater than or equal to the first preset time, obtain the initial power of the outdoor fan, the maximum power of the outdoor fan and the outdoor The liquid pipe temperature of the heat exchanger; among them, the maximum power of the outdoor fan is the maximum operating power of the outdoor fan during the operation time of the heat pump system; according to the initial power of the outdoor fan, the maximum power of the outdoor fan and the liquid pipe temperature of the outdoor heat exchanger Make sure the heat pump system is in defrost mode. The invention is used for defrosting of a heat pump system.
Description
technical field [0001] The invention relates to the technical field of heat pumps, in particular to a defrosting control method and device for automatic detection of frosting amount in a heat pump system. Background technique [0002] Air conditioning heat pump system 10 such as figure 1 As shown, it includes a compressor 101, a four-way reversing valve 102, an indoor heat exchanger 103, a throttling device 104, an outdoor heat exchanger 105 and an outdoor fan 106, wherein the outdoor fan 106 provides heat exchange to the outdoor heat exchanger 105 airflow. When the air-conditioning heat pump system 10 is in the heating state, the refrigerant is compressed by the compressor 101 and becomes a high-temperature and high-pressure gas. The high-temperature and high-pressure gas enters the indoor heat exchanger 103 through the four-way reversing valve 102, and the high-temperature and high-pressure gas passes through The indoor heat exchanger 103 releases heat and becomes a high...
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IPC IPC(8): F24F11/41F24F11/64F24F11/65F25B47/02
CPCF25B47/02
Inventor 刘敏郭来红熊志洪
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST