Air conditioner system, heating control method and device thereof and machine-readable storage medium

Abstract

The invention discloses an air conditioner system, a heating control method and device thereof and a machine-readable storage medium. The heating control method comprises the data obtaining step (S0) that the first superheat degree DSH1of refrigerants and the exhaust pressure P1 in an exhaust pipe of a compressor, the second superheat degree SSH2 of refrigerants in an exhaust pipe of a gas-liquid separator and the third superheat degree ACSH3 of refrigerants in a gas inlet pipe of the gas-liquid separator are obtained, and the gas-liquid separator liquid drainage step (S1) that when the exhaust pressure P1 is within the range of the first allowed exhaust pressure, the first superheat degree DSH1 is within the preset range of the first superheat degree, the second superheat degree SSH2 is smaller than a lower threshold value of the preset range of the second superheat degree and the third superheat degree ACSH3 is smaller than a lower threshold value of the preset range of the third superheat degree, parts of the refrigerants in the exhaust pipe of the compressor are divided to flow into the gas inlet pipe of the gas-liquid separator. According to the heating control method, the liquid refrigerants accumulated at the bottom of the gas-liquid separator can be exhausted timely, and the heating capability of the air conditioner system at the low temperature is improved.

Description

technical field [0001] The present invention relates to the technical field of heating control of an air-conditioning system, in particular to an air-conditioning system and its heating control method, device and machine-readable storage medium. Background technique [0002] When the air conditioning system is running in the heating mode, the refrigerant in the heat exchanger of the outdoor unit needs to absorb the heat in the external environment to realize the transformation from a liquid state to a gaseous superheated state. However, in a relatively low-temperature external environment, due to the small temperature difference between the refrigerant in the heat exchanger of the outdoor unit and the outside world, the heat exchange efficiency is reduced, so that the superheat and dryness of the refrigerant returning to the gas-liquid separator are small. The refrigerant flow that participates in the circulation of the air conditioning system decreases, resulting in a decre...

AI Technical Summary

Problems solved by technology

However, in a relatively low-temperature external environment, due to the small temperature difference between the refrigerant in the heat exchanger of the outdoor unit and the outside world, the heat exchange efficiency is reduced, so that the superheat and dryness of the refrigerant returning to the gas-liquid separator are small. The flow of refrigerant participating in the circulation of the air conditioning system decreases, resulting in a decrease in the heating capacity of the air conditioning system

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