Control method and system for air conditioner under low-temperature and high-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-temperature and high-humidity heating condition. Thecontrol method and system aim to solve the problems of the poor quick heating effect, the poor lubrication effect and easy frosting of an outdoor unit in the starting frequency-increasing control method of an existing air conditioner. The control method comprises the following steps that the environment temperature and the environmental humidity are obtained; when the environment temperature is smaller than the set temperature and the environment humidity is larger than the set humidity, a compressor is preheated; after preheating is finished, an outdoor fan is started, the speed of the outdoor fan is increased to a first target rotating speed; and in the process that the outdoor fan reaches the first target rotating speed, the compressor of the air conditioner is started; and the compressor is subjected to staged continuous frequency increasing according the multiple set speeds. Through the set mode, while normal oil return of the compressor is ensured, the frequency increasing timeof the compressor can be greatly shortened, the purposes of rapid heating, lubricating improving and frosting delaying are achieved, the comfort of the air conditioner is improved, and the user experience is 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 temperature and high 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 in winter, the existing air conditioners usually increase the frequency of the compressor to run at a higher frequency when they are 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. O...

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 problems in the existing air-conditioning start-up frequency control method, the rapid heating effect is poor due to the long frequency increase time, the compressor lubrication effect is poor when the ambient temperature is low, and the environment In order to solve the problem that the outdoor unit is prone to frosting when the humidity is high, the present invention provides a control method for the air conditioner under the heating condition of low temperature and high humidity. The control method includes the following steps:

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