Air source heat pump unit defrosting control method and device and air-conditioning system
A technology of air source heat pump and control method, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problem of low convenience of use, and achieve the effect of improving convenience of use and maintaining heat supply
Inactive Publication Date: 2021-01-15
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0004] Based on this, it is necessary to provide a defrosting control method, device and air-conditioning system for air source heat pump units, which can achieve the technical effect of effectively improving user convenience
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[0042] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0043] In one embodiment, a defrosting control method for an air source heat pump unit is provided, such as figure 1 shown, including:
[0044] Step S130: During the heating cycle process of the air source heat pump unit, the temperature data collected from the finned heat exchanger of the air source heat pump unit is acquired. Wherein, a temperature sensor can be set at the finned heat exchanger of the air source heat pump unit, and the temperature sensor can be connected through the controller to receive the temperature data collected by the temperature sensor. The con...
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The invention relates to an air source heat pump unit defrosting control method and device and an air-conditioning system. The method comprises the steps: temperature data collected by a fin heat exchanger of an air source heat pump unit are obtained in the heating circulation operation process of the air source heat pump unit; when the temperature data meet a preset heating defrosting condition,the air source heat pump unit is controlled to execute heating defrosting mode operation; and the heating defrosting mode operation comprises the steps: a bypass electromagnetic valve of the air source heat pump unit is controlled to be powered on, so that a refrigerant subjected to heat exchange through a shell-and-tube heat exchanger of the air source heat pump unit enters an auxiliary pipelineof the fin heat exchanger to be defrosted, and the cooled refrigerant returns to an electronic expansion valve of the air source heat pump unit to be throttled. The problem of frosting on the surfaceof the evaporator in the heating operation process of the heat pump unit is solved, meanwhile, the influence of defrosting on the refrigerating capacity is avoided, stable heat supply of the unit is kept, and the use convenience of a user is effectively improved.
Description
technical field [0001] The present application relates to the technical field of electrical equipment control, in particular to an air source heat pump unit defrosting control method, device and air conditioning system. Background technique [0002] When the air source heat pump unit is in heating operation, the fin heat exchanger acts as the system evaporator, and the shell-and-tube heat exchanger acts as the system condenser; the low-temperature refrigerant exchanges heat with the external environment in the fin heat exchanger and absorbs heat from the ambient air. After being compressed by the compressor, it turns into a high-temperature and high-pressure refrigerant gas, which exchanges heat with the water on the user's side in the shell-and-tube heat exchanger, thereby providing users with hot water demand or further heating. The heat exchange process of the refrigerant in the fin heat exchanger is often accompanied by the problem of frosting on the surface of the heat ...
Claims
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Login to View More IPC IPC(8): F25B47/02F25B49/02
CPCF25B47/025F25B49/02
Inventor 林少丹黄凯亮程琦
Owner GREE ELECTRIC APPLIANCES INC