Air conditioner and its control method

Abstract

An air conditioner (1) and control method therefor. The air conditioner (1) is provided with a compressor (20) and an exhaust gas sensor (30) for measuring an exhaust gas temperature of the compressor. The control method comprises: after an air conditioner is turned on and before a compressor is started, obtaining an outdoor environment temperature of the air conditioner and an initial temperature measured by an exhaust gas sensor; determining, according to the initial temperature and the outdoor environment temperature, whether the exhaust gas sensor is damaged; if not, controlling the compressor to start and continuously run for a first preset period; and determining, according to the initial temperature, the outdoor environment temperature, and an exhaust gas temperature after the continuously runs for the first preset period, whether the exhaust gas sensor falls off or is not mounted in place.

Description

technical field [0001] The invention relates to an air conditioner, in particular to an air conditioner control method and the air conditioner. Background technique [0002] With the increasing requirements for energy saving and environmental protection, the access level of energy efficiency is also increasing year by year, coupled with the rising demand of consumers, the market for high-energy-efficiency air conditioners is gradually expanding. High-efficiency air conditioners have very high requirements on the control of expansion valve opening, compressor frequency and other parameters, and the control of expansion valve opening, compressor frequency and other parameters mostly depends on the discharge temperature of the compressor for feedback adjustment. In the actual application process, the discharge sensor used to detect the discharge temperature of the compressor will have some problems such as damage, improper installation or falling off, resulting in inability to ...

AI Technical Summary

Problems solved by technology

In the actual application process, the discharge sensor used to detect the discharge temperature of the compressor will have some problems such as damage, improper installation or falling off, resulting in inability to detect the temperature or inaccurate detection, resulting in expansion valves, compressors and even The entire refrigeration system is abnormal, and in severe cases, the compressor will be burned

Some existing solutions can detect the damage of the exhaust sensor, but cannot detect whether the exhaust sensor is not installed in place or falls off, and cannot completely and thoroughly solve the problem of inaccurate exhaust temperature detection

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