Supercooling liquid impact preventing device of air cooling heat pump air conditioner

Abstract

The invention relates to a liquid impact preventing device of a compressor, in particular to a supercooling liquid impact preventing device of an air cooling heat pump air conditioner, comprising a liquid outlet pipe of a condenser, the condenser, an exhaust pipe of a compressor, a liquid outlet pipe of a liquid pump, the liquid pump, an input pipe of a liquid pump, the compressor, a gas suction pipe of the compressor, a gas-liquid separator, a gas inlet pipe of the gas-liquid separator, a controller, a first liquid level sensor and a second liquid level sensor, wherein the liquid outlet pipe of the condenser, the condenser, the exhaust pipe of the compressor, the compressor, the gas suction pipe of the compressor, the gas-liquid separator and the gas inlet pipe of the gas-liquid separator are connected in sequence. The invention has the advantages that liquid is pumped to the condenser when the liquid in the gas-liquid separator is overmuch so that a refrigerant at the bottom of the condenser is supercooled, and the condition that the liquid refrigerant is absorbed in the compressor to cause liquid impact is prevented; the size of the gas-liquid separator is reduced, and the manufacturing material and the space are saved; and the supercooling liquid impact preventing device of the air cooling heat pump air conditioner is simple in installation and easy for production operation.

Description

technical field [0001] The invention relates to a compressor liquid shock prevention device, in particular to an air-cooled heat pump air conditioner supercooling liquid shock prevention device. Background technique [0002] The existing air-cooled heat pump air-conditioning system, in the winter heating work, due to the low outdoor ambient temperature, the heating capacity attenuates greatly, often cannot meet the requirements of the air-conditioning heat load, the temperature of the air-conditioned room decreases, and the comfort level decreases. At this time, the air-cooled heat pump air-conditioning system will increase the pressure of the condenser of the refrigeration system and reduce the pressure of the evaporator, so that the entire refrigeration system needs more refrigerant when heating than when cooling. When the working conditions change, there will be no evaporation. The liquid refrigerant returns to the compressor and is compressed, due to the incompressible c...

AI Technical Summary

Problems solved by technology

[0002] The existing air-cooled heat pump air-conditioning system, in the winter heating work, due to the low outdoor ambient temperature, the heating capacity attenuates greatly, often cannot meet the requirements of the air-conditioning heat load, the temperature of the air-conditioned room decreases, and the comfort level decreases

At this time, the air-cooled heat pump air-conditioning system will increase the pressure of the condenser of the refrigeration system and reduce the pressure of the evaporator, so that the entire refrigeration system needs more refrigerant when heating than when cooling. When the working conditions change, there will be no evaporation. The liquid refrigerant returns to the compressor and is compressed, due to the incompressible characteristics of the liquid, it will cause the "liquid hammer" failure of the compressor

In order to prevent "liquid shock", the current air-cooled heat pump air-conditioning system installs a larger gas-liquid separator at the suction port of the compressor, which not only increases the cost, but also takes up space.

Images