Air conditioner exhaust pressure adjusting method and device and air conditioner

Abstract

The invention discloses an exhaust pressure adjusting method and device of an air conditioner and the air conditioner, and relates to the technical field of air conditioners. The exhaust pressure adjusting method of the air conditioner comprises the steps that the outdoor environment temperature and the starting capacity of an indoor unit are detected, and whether the exhaust pressure adjusting condition is met or not is judged based on the outdoor environment temperature and the starting capacity of the indoor unit; if yes, the target superheat degree of the indoor unit is determined based on the outdoor environment temperature, and an expansion valve of the indoor unit is adjusted based on the target superheat degree; the exhaust temperature of the compressor is monitored, and when the exhaust temperature is larger than the preset temperature, the target superheat degree is corrected based on the exhaust temperature. According to the air conditioner, frequent high-pressure protection of the compressor can be avoided, the refrigerant circulation amount is adjusted, the refrigerating capacity of the indoor unit is improved, and the operation reliability of the air conditioner and the indoor environment comfort are improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an air conditioner exhaust pressure adjustment method and device, and the air conditioner. Background technique [0002] At present, when the air conditioner is running in cooling mode at high temperature, due to the low heat transfer efficiency of the outdoor heat exchanger at high temperature and the high exhaust pressure of the compressor, it is easy to trigger high-pressure protection shutdown or frequent frequency limit and frequency reduction. To keep the exhaust pressure within a reasonable range, the current exhaust pressure regulation technology usually limits the operating frequency of the compressor, but at the same time reduces the cooling capacity of the indoor unit and reduces the comfort of the indoor environment. Contents of the invention [0003] In order to solve the above problems, the present invention provides an air conditioner exhaust pressure ad...

AI Technical Summary

Problems solved by technology

[0002] At present, when the air conditioner is running in cooling mode at high temperature, due to the low heat transfer efficiency of the outdoor heat exchanger at high temperature and the high exhaust pressure of the compressor, it is easy to trigger high-pressure protection shutdown or frequent frequency limit and frequency reduction. Keep the discharge pressure within a reasonable range. The current discharge pressure adjustment technology usually limits the operating frequency of the compressor, but at the same time reduces the cooling capacity of the indoor unit and reduces the comfort of the indoor environment.

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