Cold and heat combined supply air energy ultralow-temperature enhanced vapor injection heat pump system

Abstract

The invention discloses a cold and heat combined supply air energy ultralow-temperature enhanced vapor injection heat pump system. The cold and heat combined supply air energy ultralow-temperature enhanced vapor injection heat pump system comprises an enhanced vapor injection compressor, a four-way valve, a water fluoride heat exchanger, a liquid storage tank, an efficient subcooler, an air cooling type finned evaporator and a gas-liquid separator. The four-way valve is connected with the enhanced vapor injection compressor, the water fluoride heat exchanger, the gas-liquid separator and the air cooling type finned evaporator. The enhanced vapor injection compressor is connected with the efficient subcooler and the gas-liquid separator. The liquid storage tank is connected with the efficient subcooler. The liquid storage tank is connected with the water fluoride heat exchanger and the air cooling type finned evaporator through a drying filter. The efficient subcooler is connected with the air cooling type finned evaporator and the water fluoride heat exchanger through a one-way valve. The enhanced vapor injection technology is adopted in the system, the system can still stably and effectively run for heating at the low temperature, the heating requirement can be met at the low temperature through one device, effective refrigerating is achieved at the high temperature, the using functions of the system are increased, and the work performance is improved.

Description

technical field [0001] The invention relates to the field of heat pumps, in particular to an air-energy ultra-low temperature injection enthalpy-increasing heat pump system for combined cooling and heating. Background technique [0002] At present, heat pump systems are used in various industries and have played an irreplaceable role, bringing great technical effects and economic benefits to enterprises. However, most of the existing heat pump systems are air-energy heat pumps that do not use low-temperature air jet enthalpy-increasing technology. The heating effect at low temperatures is too poor, and they basically cannot work normally below -15°C. Although the heat pump system adopts the technology of low-temperature air injection to increase enthalpy, because the opening of the throttle valve is too small and the high-efficiency supercooler does not have effective heat exchange after the reverse flow, the effect of the air source heat pump in cooling in summer is very po...

AI Technical Summary

Problems solved by technology

However, most of the existing heat pump systems are air-energy heat pumps that do not use low-temperature air jet enthalpy-increasing technology. The heating effect at low temperatures is too poor, and they basically cannot work normally below -15°C.

Although the heat pump system adopts the technology of low-temperature air injection to increase enthalpy, because the opening of the throttle valve is too small and the high-efficiency supercooler does not have effective heat exchange after the reverse flow, the effect of the air source heat pump in cooling in summer is very poor, especially when the temperature is low. It is prone to failure when it is relatively high

And the present invention is to solve the problem of affecting the refrigeration operation after adopting the technology of low-temperature gas injection to increase enthalpy

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