What are the advantages of the high-pressure gas-liquid separator with oil recovery for carbon dioxide heat pumps?

The utility model relates to a high-pressure gas-liquid separator for carbon dioxide heat pump, which belongs to the field of carbon dioxide heat pump, the utility model comprises a tank body and a second gaseous refrigerant inlet arranged on the tank body, a second gaseous refrigerant outlet and an oil return outlet, and the second gaseous refrigerant inlet and the second gaseous refrigerant outlet are communicated through an inner cavity of the tank body. The high-pressure gas-liquid separator of the carbon dioxide heat pump has the functions of a gas-liquid separator, an oil storage device and an oil recovery device, the liquid oil and refrigerant return to the system from the return outlet of the lower part of the return oil type high pressure gas-liquid separator, so as to increase the return oil quantity back to the compressor, thus greatly enhance the service life of the compressor, improve the stability and reliability of the system.