Air injection enthalpy-increasing scroll compressor and refrigeration system

Abstract

Provided are an air injection enthalpy-increasing scroll compressor, and a refrigeration system comprising the air injection enthalpy-increasing scroll compressor. The air injection enthalpy-increasing scroll compressor comprises a compressor housing, a main frame (13), a movable scroll plate (12) and a stationary scroll plate (11). The movable scroll plate (12) is arranged on the main frame (13). The movable scroll plate (12) comprises a movable plate end plate (121) and a movable scroll tooth (122) arranged on a side end face, away from the main frame (13), of the movable plate end plate (121), with a back pressure chamber being defined between the movable plate end plate (121) and the main frame (13). The stationary scroll plate (11) is arranged on one side, away from the main frame (13), of the movable scroll plate (12). The stationary scroll plate (11) comprises a fixed scroll end plate (111) and a stationary scroll tooth (112) arranged on a side end face, adjacent to the main frame (13), of the fixed scroll end plate (111). The stationary scroll tooth (112) and the movable scroll tooth (122) are engaged with each other to form a crescent-shaped compression cavity. At least one of the movable scroll plate (12) and the stationary scroll plate (11) is provided with medium pressure passages (30, 40), and during the rotation of the movable scroll plate (12), the medium pressure passages (30, 40) are suitable for communicating the compression cavity with the back pressure chamber. The air injection enthalpy-increasing scroll compressor can inhibit the overturning of the moving scroll plate (12) during operation, thereby improving the performance of the air injection enthalpy-increasing scroll compressor.

Dependencies are inferred from the claim text.