Control method and system for air conditioner under low-humidity heating condition

Abstract

The invention relates to the technical field of air conditioners, in particular to a control method and system for an air conditioner under the low-humidity heating condition, and aims to solve the problem of poor quick heating effect due to long frequency boosting time with a starting frequency boosting control method for existing air conditioners. The control method comprises the steps as follows: the environment humidity is acquired; when the environment humidity is not larger than the set humidity, an expansion valve is adjusted to the first target opening degree; an external fan is started during adjustment of the expansion valve and is accelerated to the first target rotating speed; and when the external fan is accelerated, before the external fan is accelerated or after the externalfan is accelerated, a compressor is started and is subjected to stage-by-stage continuous frequency boosting at multiple set speeds. With the control method, the frequency boosting time of the compressor can be substantially shortened while normal oil return of the compressor is guaranteed, then the quick heating purpose can be achieved, the comfort of the air conditioner can be improved, and theuser experience can be improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an air conditioning control method and system under low-humidity heating conditions. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for the quality of life, and this requirement is particularly evident in household appliances. Taking an air conditioner as an example, in order to meet the needs of users for rapid heating and thus bring a more comfortable experience, the existing air conditioner generally makes the compressor quickly increase to a higher frequency when it is first turned on. When the compressor is running, the refrigerant in the compressor will be quickly discharged and circulated in the piping system. During the circulation process, the lubricating oil will be discharged from the compressor together with the refrigerant and enter the pipeline. Only when the discharged lubricating oil ret...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem of poor rapid heating effect due to long up-frequency time in the existing air-conditioning up-frequency control method, the present invention provides a low-humidity heating method The control method of the air conditioner under the circumstances, the control method includes the following steps:

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