Piston limiting structure, compressor and heat exchange equipment

Abstract

The invention relates to the field of compressors, in particular to a piston limiting structure, a compressor and heat exchange equipment. The piston limiting structure comprises an air cylinder, a piston and a limiting part. The air cylinder is provided with a piston hole, wherein the piston hole is perpendicular to the axis direction of the air cylinder and penetrates through the air cylinder, and the projection of the piston hole in the penetrating direction is circular. The piston is arranged in the piston hole in a matched shape mode and can slide in the piston hole in a reciprocating mode. A limiting surface is formed in the side wall of the piston. The length part, in the axis direction of the piston, of the limiting surface does not penetrate through the two ends of the side wall of the piston. The air cylinder is provided with a limiting hole penetrating from the outer wall of the air cylinder to the piston hole. The limiting part is arranged in the limiting hole in a matchedshape mode and abuts against the limiting surface to limit the piston to rotate around the axis of the piston. According to the piston limiting mechanism, clearance volume is not introduced, so that the piston limiting effect is better.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a piston limiting structure, a compressor and heat exchange equipment. Background technique [0002] Rotary cylinder piston compressor is a compressor based on the principle of cross sliders. The cylinder rotates in the cylinder liner, and the piston is horizontally arranged in the piston hole of the cylinder, and slides reciprocally in the piston hole, so that the end surface of the piston, A compression cavity is formed between the side wall of the piston hole and the inner wall of the cylinder liner. [0003] In order to ensure the degree of fit and applicability between the piston and the piston hole, from a manufacturing point of view, it is obviously optimal to use a circular piston hole and a piston with a cylindrical cross-section, and it is easiest to ensure machining accuracy. However, in this case, since the piston hole is arranged laterally in the cylindrical piston, the t...

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Problems solved by technology

[0007] In order to solve the technical problem that the circular piston in the prior art will rotate and cause the piston head to interfere with the inner wall of the cylinder liner or even hit the cylinder, and at the same time, the limit structure between the circular piston and the cylinder will introduce a natural clearance volume. The present invention provides A piston limit structure that prevents the piston from rotating and has high matching precision will not introduce clearance volume

[0008] At the same time, in order to solve the technical problem that the circular piston limiting structure in the existing rotary cylinder piston compressor will introduce clearance volume and have high requirements for processing technology, the present invention provides a circular piston that does not introduce clearance volume. piston compressor

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