Pump body assembly and rolling piston compressor

Abstract

The application belongs to the technical field of compressors and discloses a pump body assembly, which comprises a cylinder, wherein the cylinder comprises a cylinder body and a first cavity formed by the cylinder body, the cylinder body is provided with a cutout part, one end of the cutout part extends to the inner wall of the cylinder body, the other end of the cutout part extends to the exhaust side of the cylinder, the maximum distance between the edge of the cutout part and the inner wall of the cylinder body is b, the thickness of the cylinder body is B, wherein 0 < b / B ≤ 0.2, the cutout part is communicated with the first cavity and meets at the exhaust side of the cylinder, and high-pressure gas in the first cavity is discharged through the cutout part and the exhaust side of the cylinder, so that the clearance volume is reduced, the volumetric efficiency is improved, and the noise is reduced; the rolling rotor compressor provided by the application comprises the above pump body assembly, the pump body assembly reduces the clearance volume, improves the volumetric efficiency, and reduces the noise, so that the rolling rotor compressor has large displacement and low noise.

Images