Heating control method and device for air conditioner, air conditioner and storage medium

Abstract

The invention belongs to the technical field of air conditioner control, and particularly relates to a heating control method and device for an air conditioner, the air conditioner and a storage medium. The heating control method for the air conditioner provided by the invention comprises the following steps: determining whether or not first temperature difference between an initial first temperature of an outer coiled tube and a current second temperature of the outer coiled tube is greater than or equal to a preset first temperature threshold value; increasing opening degree of an electronicexpansion valve; judging whether second temperature difference between a third temperature of the outer coiled tube and the first temperature is smaller than a second temperature threshold value if the first temperature difference is judged to be within first preset time length; and if the judged result is yes, regulating the electronic expansion valve according to a preset target gas exhaust temperature of a compressor, and entering a defrosting mode if the judged result is no. According to the heating control method and device for the air conditioner, the air conditioner and the storage medium provided by the invention, frosting speed of an outdoor unit of the air conditioner can be reduced, heating time is effectively prolonged, frequency of making the air conditioner enter the defrosting mode is reduced, and ability of evenly heating within single defrosting period is improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioner control, and in particular relates to an air conditioner heating control method, device, air conditioner and storage medium. Background technique [0002] As the country vigorously promotes coal-to-electricity heating in recent years, the use of inverter air conditioners for heating has become more and more popular among users. [0003] At present, inverter air conditioners generally use the target discharge temperature of the compressor to control the opening and closing of the electronic expansion valve, so as to adjust the circulation flow of the refrigerant, so as to achieve effective cooling and heating effects. During the heating season, when the outdoor temperature is low and the humidity is high, the external unit of the air conditioner will start to frost after running for a period of time, resulting in poor heat exchange capacity of the external unit. In the prior art, in order ...

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Problems solved by technology

[0004] However, under heating conditions, the continuous reduction of the opening of the electronic expansion valve will lead to faster frosting of the outdoor unit, which will further reduce the heat exchange efficiency of the outdoor unit, and the temperature detected by the outdoor coil sensor will When it falls to the defrosting condition, the system will start to defrost and stop heating, which will undoubtedly shorten the heating time of the air conditioner and affect the user experience

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