Air conditioner heating and defrosting control method, air conditioner and storage medium

Abstract

The invention provides an air conditioner heating and defrosting control method, an air conditioner and a storage medium. According to the air conditioner heating and defrosting control method, duringthe period of enabling a compressor to quickly raise the frequency to a heating start operation frequency after a shutdown state carrying out a defrosting exit action, an operating process for raising the frequency to a low-frequency first frequency at low speed and maintaining operating for a second preset time is inserted, so that the problem that the pressure change of a refrigerant in a pipeline is too fast since the compressor is quickly started is alleviated, and the problems that due to too large differential pressure between an inlet and an outlet of an expansion valve, the temperature of the refrigerant from the outlet of the expansion valve is too low, and compressor lubricating oil mixed with the refrigerant is frozen so as to cause the blockage of a pipeline are avoided.

Description

technical field [0001] The invention relates to the field of air conditioner control, in particular to an air conditioner heating and defrosting control method, an air conditioner and a storage medium. Background technique [0002] At present, many inverter air conditioners use electronic expansion valves with adjustable openings to throttle. At the same time, the expansion valve is directly and rapidly adjusted from the maximum opening in the defrosting process to the initial heating opening for the next normal heating. The risk brought by this is because the expansion valve exits defrosting The maximum opening of the compressor is adjusted to a small initial opening, and the frequency of the compressor is rapidly increased, resulting in the temperature near the expansion valve in the pipeline being too low, causing the compressor lubricating oil to solidify and causing pipeline blockage, resulting in heating failure question. [0003] The above content is only used to as...

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for controlling heating and defrosting of an air conditioner, with the purpose of solving the problem of pipeline blockage caused by the rapid frequency increase of the compressor and the rapid decrease of the opening of the expansion valve when the existing air conditioner exits defrosting cause heating problems

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