Low temperature air heat source heat pump system

Abstract

The invention discloses a low-temperature air heat source heat pump system, which consists of a compressor (1), a four-way reversing valve (8), an indoor heat exchanger (2), a first expansion valve (3), and an outdoor heat exchanger ( 4) Connected in sequence, a gas-liquid separator (5) is connected on the suction circuit from the four-way valve to the compressor, and a gas-liquid separator (5) is connected between the four-way reversing valve (8) and the indoor heat exchanger (2). A diverter valve (6), the diverter valve (6) is connected with the outdoor heat exchanger (4), and the outdoor heat exchanger is connected to the gas-liquid separator (5) through the second expansion valve (9); in the indoor heat exchanger ( 2) A first three-way reversing valve (11) and a second three-way reversing valve (10) are connected in series between the first expansion valve (3), and the first three-way reversing valve (11) and The second three-way reversing valve (10) is respectively connected to the gas-liquid separator (5); and a one-way valve (7) is connected between the four-way reversing valve and the gas-liquid separator. Under low temperature environment conditions, the low temperature air heat source heat pump system can provide sufficient heat to the room.

Description

technical field [0001] The invention relates to a low-temperature air heat source heat pump system. In particular, it relates to a low-temperature air heat source heat pump system that can operate stably under low-temperature environmental conditions, maintain relatively sufficient refrigerant flow, and provide sufficient heat to the room. Background technique [0002] The heat pump system is a refrigeration system that supplies heat from the condenser to the conditioned environment. As far as the thermophysical process of the heat pump system is concerned, it is a special type of refrigerator, which focuses on the heat exchange between the refrigerant on the high-pressure side of the system through the condenser and the outside world. As one of the forms of heat-providing equipment, the heat pump system has been widely used in many fields due to its environmental friendliness and energy-saving characteristics. [0003] The air heat source heat pump system uses the ambient...

AI Technical Summary

Problems solved by technology

[0007] One purpose, feature and advantage of the present invention is to solve the problem of insufficient heating capacity when the existing air heat source heat pump system operates under the condition of low outdoor ambient temperature

[0008] One purpose, feature and advantage of the present invention is to solve the problem that the existing air heat source heat pump system cannot provide sufficient heat to the room when the outdoor environment temperature is low, and the auxiliary electric heating is used, that is, in the indoor heat exchanger or The electric heating device is arranged on the outdoor heat exchanger, which brings about the problem of poor safety

[0009] One of the features and advantages of the present invention is to solve the problem that the existing air heat source heat pump system cannot provide heat to the room when the outdoor heat exchanger needs to be defrosted

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