A cylinder assembly, a pump body structure and a compressor

By optimizing the ratio of the contact surface radius between the slider and the piston and controlling it within a certain range, the uneven distribution of frictional force in sliding friction, which increases slider wear and wear at the contact surface between the slider and the piston, is solved. Conversely, by making the contact surface between the slider and the piston a circular arc surface, slider wear is reduced. This solves the technical problems existing in the prior art and improves the performance and reliability of the compressor.

CN224380104UActive Publication Date: 2026-06-19PANASONIC WANBAO GUANGZHOU COMPRESSOR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
PANASONIC WANBAO GUANGZHOU COMPRESSOR
Filing Date
2025-06-18
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

The existing compressor suffers from severe wear between the slider and the piston, leading to refrigerant leakage and performance degradation, which affects the compressor's reliability.

⚗Method used

By optimizing the ratio of the contact surface radius R between the slider and the piston to the outer diameter D of the piston, and controlling it within the range of 0.029≤R/(T*D)≤0.043, the sliding friction range is increased, slider wear is reduced, and a spring is set in the groove to connect the slider and the piston.

🎯Benefits of technology

It effectively reduces slider wear, lowers the risk of refrigerant leakage, and improves compressor performance and reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to a cylinder assembly, a pump body structure, and a compressor. The cylinder assembly includes a cylinder body, a piston, a slider, and a spring. A compression chamber is formed through the cylinder body along its axial direction. The piston is rotatably disposed within the compression chamber, and its outer peripheral wall abuts against the inner peripheral wall of the compression chamber. A groove is formed by radially outward recesses of the cylinder body from the inner peripheral wall of the compression chamber. The slider is slidably disposed within the groove. The end of the slider away from the compression chamber abuts against the end of the groove away from the compression chamber via a spring. The end of the slider away from the spring abuts against the piston. The end face of the slider abutting against the piston is an arc surface with a radius of R. The thickness of the slider is T, and the outer diameter of the piston is D, satisfying the relationship: 0.029 ≤ R / (T*D) ≤ 0.043. This utility model can effectively reduce slider wear, lower the risk of refrigerant leakage, and improve the performance and reliability of the compressor.
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