October 27, 2021
An internal conversion heat pump is developed, which comprises a first three-way valve and a second three-way Valve. The main port of the first three-way valve is connected to the suction port of the compressor, and the second three-way valve is connected to the exhaust port of the compressor, the utility model is used for converting the refrigerant flow direction between the first heat exchanger, the second heat exchanger and the compressor, and also comprises an automatic reversing valve group, which comprises four differential pressure check valves, through the combination connection of the four pressure difference check valves between the first heat exchanger, the second heat exchanger and the throttling device, the refrigerant flow direction conversion between the first heat exchanger, the second heat exchanger and the throttling device is realized The conversion of heating and cooling conditions of heat pump is realized by the above two transformations. The heat pump inner conversion assembly and the inner conversion heat pump of the invention have the advantages of low cost, small occupied space, easy installation, high reliability and easy operation during the conversion of refrigeration and heating working conditions.
