Air conditioner capable of preventing liquid impact of compression and control method for preventing liquid hammer of compressor

Abstract

The invention discloses an air conditioner capable of preventing the liquid impact of a compressor and a control method for preventing the liquid impact of the compressor. The air conditioner capableof preventing the liquid impact of the compressor comprises a refrigerant circulation loop, an outdoor environment temperature sensor and a compressor air return pipe sensor, wherein the refrigerant circulation loop is at least composed of the compressor, a reversing valve, a first heat exchanger, a throttling device, a second heat exchanger and a liquid storage tank which connected in sequence, one end of bypass pipeline is connected to a pipeline between the reversing valve and the first heat exchanger, and the other end of the bypass pipeline is connected to a pipeline between the first heat exchanger and the throttling device; at least one part of the bypass pipeline is coiled on the liquid storage tank or is located at the lower part of the compressor, whether a control valve is opened or not is judged through that the detected actual outdoor environment temperature T is compared with the set outdoor environment temperature T by an air conditioning system, when the detected actualoutdoor environment temperature T is too low to be lower than the set outdoor environment temperature T, the control valve is opened, a part of high-temperature refrigerant discharged from an exhaustport of the compressor enters the bypass pipeline to preheat the compressor, and the phenomenon of liquid impact of the compressor is effectively prevented.

Description

technical field [0001] The invention relates to an air conditioner, in particular to an air conditioner for preventing compressor liquid shock and a control method for preventing compressor liquid shock applied to the air conditioner. Background technique [0002] At present, when the air conditioner is cooling or heating in a low-temperature and ultra-low temperature environment (the ambient temperature is -15°C to -10°C), due to the low temperature of the return refrigerant, the liquid refrigerant will accumulate in the compressor, and there will be a risk of liquid shock at any time . Compressor liquid shock means that liquid refrigerant enters the compressor. Slight short-term liquid shock may not be a big problem, but frequent long-term and heavy liquid shock may cause compressor compression parts (such as connecting rods or valve plates) Permanent damage that prevents the compressor from operating properly. Contents of the invention [0003] The present invention a...

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Problems solved by technology

[0003] The present invention aims at the problem of compressor hydraulic pressure in an air conditioner operating in a low-temperature and ultra-low temperature environment existing in the prior art, and provides an air conditioner that prevents compressor liquid shock and a control method for preventing compressor liquid shock

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