Heat pump air conditioner system

Abstract

The invention discloses a heat pump air conditioner system. The heat pump air conditioner system comprises a compressor, an indoor heat exchanger, a first throttling device, an economizer, a second throttling device, an outdoor heat exchanger, a gas-liquid separator and an enhanced vapor injection refrigerating / heating circulating loop partially or totally composed in a third throttling device. The heat pump air conditioner system further comprises a first solenoid valve and a second solenoid valve. A connector of an auxiliary loop of the economizer and a vapor injection opening of the compressor is further communicated with an inlet of the gas-liquid separator through a pipe. The first solenoid valve is arranged on a connection pipe between the auxiliary loop of the economizer and an inlet of the gas-liquid separator. The second solenoid valve is arranged on a connection pipe between the auxiliary loop of the economizer and the vapor injection opening of the compressor. By means of the heat pump air conditioner system, the heat exchange temperature difference between the gas side and the liquid side of the economizer is increased, and higher heat exchange efficiency is achieved; the condensate depression of the system is improved in the refrigerating operating process, and capacity attenuation of unit long piping in the mounting process is reduced.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a heat pump air conditioning system. Background technique [0002] The main advantage of air injection enthalpy increasing technology lies in its high heating performance under low temperature conditions. It is widely used in low temperature heat pump water heaters and also in low temperature heat pump air conditioning systems. When applied to the former, there is only a heating cycle, and when applied to the latter, there are cooling and heating cycles. When the air injection enthalpy increase technology is applied in the heat pump air conditioning system, especially in the long piping system of large-capacity units, due to the small system subcooling degree during cooling operation, it is easy to cause severe flashing of the refrigerant in the piping from the outdoor unit to the indoor unit, thus Causes a significant attenuation of the overall capability. [0003] Therefore, i...

AI Technical Summary

Problems solved by technology

When the air injection enthalpy increase technology is applied in the heat pump air conditioning system, especially in the long piping system of large-capacity units, due to the small system subcooling degree during cooling operation, it is easy to cause severe flashing of the refrigerant in the piping from the outdoor unit to the indoor unit, thus Causes a significant attenuation of the overall capacity

Images