Method and system for controlling air conditioner under low-temperature and low-humidity heating working condition

Abstract

The invention relates to the technical field of air conditioners, in particular to a method and system for controlling an air conditioner under the low-temperature and low-humidity heating working condition. The method and system aim to solve the problems that as for an existing air conditioner, the quick heating effect is poor, and the lubrication effect is poor. The control method comprises thesteps that the environment temperature and environment humidity are obtained; when the environment temperature is smaller than the setting temperature and the environment humidity is not larger than the setting humidity, a compressor is preheated; after preheating, an expansion valve is adjusted to the first target opening; in the expansion valve adjusting process, an external blower is started and accelerated to the first target rotating speed; and the compressor is started while, before or after the external blower is accelerated, and continuous frequency increasing is conducted by stages according to a plurality of set speeds. Through the method, the frequency increasing time of the compressor can be greatly shortened, the purposes of rapid heating and lubrication improving 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 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...

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 of poor rapid heating effect and poor lubrication effect of the compressor when the ambient temperature is low due to the long up-frequency time in the existing air-conditioning up-frequency control method , the present invention provides a control method of an air conditioner under low-temperature and low-humidity heating conditions, the control method comprising the following steps:

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