Compressor pump body, compressor and refrigeration equipment

The utility model provides a compressor pump body, a compressor and refrigeration equipment, and belongs to the technical field of air conditioners, the compressor pump body comprises a cylinder body, a driving device and a roller structure, an air cavity is arranged in the cylinder body, the roller structure is arranged in the air cavity, and the driving device drives the roller structure to rotate. The central axis of the roller structure coincides with the central axis of the cylinder body, N contact faces connected with the inner side wall of the air cavity are arranged on the outer side wall of the roller structure, a refrigerant containing cavity is formed between every two adjacent contact faces and the inner wall of the air cavity, and N is a natural number larger than 2. The roller structure of the pump body and the air cylinder are coaxially arranged, compression of refrigerants can be achieved without an eccentric structure, and the pump body has the advantages of being low in production cost, safe