HEAT PUMP DEVICE, COMPRESSOR WITH INJECTION MECHANISM, AND METHOD OF MANUFACTURING SCROLL COMPRESSOR WITH INJECTION MECHANISM

摘要

The refrigerant during compression aims to prevent the outflow injection circuit. In the compressor, to form a compression chamber 20, compression chamber compressing section for compressing the sucked refrigerant to discharge pressure of the suction pressure in the suction (20) (1, 2) and the compression chamber 20, the suction refrigerant is The suction pressure refrigerant having a discharge pressure higher than the injection for injecting the injection refrigerant in the intermediate pressure portion which is lower than the intermediate pressure. Coolant injection unit, the refrigerant flowing through the injection pipe chamber 41 from the injection circuit is injected refrigerant inlet (1e) and a refrigerant inlet chamber (1e) and that is connected to the intermediate pressure of the compression chamber (20) open and close the valve chamber (1f ) as the refrigerant inlet chamber (1e) and the connection port of the connection port and the intermediate pressure portion of the chamber and formed in the same plane in the refrigerant inlet chamber (1e) by a pressure difference between the refrigerant and the refrigerant in the intermediate pressure side and the coolant side The inlet chamber (1e) of the on-off valve for opening and closing the connection port 30 is provided with a closing valve chamber provided. ;