Air conditioning system and control method thereof

Abstract

The invention provides an air conditioning system and a control method thereof. The air conditioning system comprises a compressor (1), a first air-liquid separator (2) and a second air-liquid separator (3); the position of the first air-liquid separator (2) and the position of the second air-liquid separator (3) can be switched, so that the second air-liquid separator (3) is located at the air exhaust end of the compressor (1) when the first air-liquid separator (2) is located at the air suction end of the compressor (1), and the second air-liquid separator (3) is located at the air suction end of the compressor (1) when the first air-liquid separator (2) is located at the air exhaust end of the compressor (1). According to the air conditioning system, liquid entrainment during air suction of the compressor can be prevented effectively, so that long-time reliable running of the compressor can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to an air conditioning system and a control method thereof. Background technique [0002] With the development of the refrigeration industry and the improvement of air-conditioning technology, the requirements for compressors are getting higher and higher. The low-frequency operation of the compressor is a major technical difficulty. When the compressor is operated at low frequency, it is easy to cause incomplete evaporation of the refrigerant in the evaporator. This causes the compressor to suck liquid. Suction entrainment will cause difficulties in the formation of oil film inside the compressor, affecting the long-term reliable operation of the compressor. On the other hand, inhalation entrainment will cause the refrigerant to vaporize rapidly inside the compressor, which will seriously affect the performance of the compressor. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] With the development of the refrigeration industry and the improvement of air-conditioning technology, the requirements for compressors are getting higher and higher. The low-frequency operation of the compressor is a major technical difficulty. When the compressor is operated at low frequency, it is easy to cause incomplete evaporation of the refrigerant in the evaporator. As a result, the compressor sucks liquid

Suction with liquid will cause difficulties in the formation of oil film inside the compressor, which will affect the long-term reliable operation of the compressor. On the other hand, suction with liquid will cause the refrigerant to vaporize rapidly inside the compressor, which will seriously affect the performance of the compressor.

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