Method and device for controlling frequency of compressor, heat pump water heater and storage medium
A heat pump water heater and frequency control technology, which is applied in the field of compressor control, can solve the problems of low control accuracy, inability to meet the control requirements of heat pump water heaters, and the inability of compressor operating frequency to accurately match the actual needs of heat pump water heaters, etc.
Inactive Publication Date: 2018-11-27
HEFEI MIDEA HEATING & VENTILATING EQUIP +1
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Problems solved by technology
[0002] The existing heat pump water heaters are mainly fixed frequency, and there are few frequency conversion products. The frequency conversion heat pump water heater adjusts the operating frequency of the compressor according to different water temperature ranges according to the controller under certain working conditions, but directly determines the operating frequency of the compressor according to the water temperature. The control accuracy is low, and it cannot meet the control requirements for heat pump water heaters at the present stage; in addition, the water stratification of different water temperatures that occurs after the heat pump water heater has been run for many times, directly uses the detected water temperature to represent the actual water temperature, and then determines the heat pump water heater. The operating frequency of the medium compressor cannot accurately match the actual demand of the heat pump water heater
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[0069] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0070] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.
[0071] The embodiment of the first aspect of the present invention provides a method for controlling the frequency of a compressor, which is used in a frequency conversion heat pump water heater.
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The invention provides a method for controlling the frequency of a compressor, a device for controlling the frequency of the compressor, a heat pump water heater and a computer readable storage medium. The method comprises the following steps of: acquiring a plurality of water temperatures of a water tank in a variable frequency heat pump water heater in real time; acquiring a set water temperature and the ambient temperature, and calculating the capability requirement of the compressor according to the set water temperature, the ambient temperature and the plurality of water temperatures; determining a capability requirement correction coefficient according to the ambient temperature; calculating the operating frequency of the compressor according to the capability requirement and the capability requirement correction coefficient and controlling the operation of the compressor according to the operating frequency. The capability requirement of the compressor is calculated by utilizingthe plurality of water temperatures, the ambient temperature and the set temperature, the operating frequency of the compressor is determined according to the capability requirement correction coefficient determined according to the ambient temperature, the operating efficiency of the compressor is improved, and meanwhile, the fluctuation of the output of the compressor is reduced, so that the reliability is improved.
Description
technical field [0001] The present invention relates to the field of compressor control, in particular to a compressor frequency control method, a compressor frequency control device, a heat pump water heater and a computer-readable storage medium. Background technique [0002] The existing heat pump water heaters are mainly fixed frequency, and there are few frequency conversion products. The frequency conversion heat pump water heater adjusts the operating frequency of the compressor according to different water temperature ranges according to the controller under certain working conditions, but directly determines the operating frequency of the compressor according to the water temperature. The control accuracy is low, and it cannot meet the control requirements for heat pump water heaters at the present stage; in addition, the water stratification of different water temperatures that occurs after the heat pump water heater has been run for many times, directly uses the de...
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IPC IPC(8): F24H9/20
CPCF24H9/2007
Inventor 曾智力
Owner HEFEI MIDEA HEATING & VENTILATING EQUIP