Shaft seal sealing structure without shaft seal check ring and automobile air conditioner compressor thereof
By adopting a shaft seal sealing structure without a shaft seal retainer ring in the automotive air conditioning compressor, and using three sections of bores with different inner diameters for back pressure assembly of the shaft seal, the machining of the shaft seal retainer ring and the front cover retainer ring groove is eliminated, solving the cost problem caused by the increase of parts in the existing technology and achieving the effect of cost reduction.
CN224214321UActive Publication Date: 2026-05-08SHANGHAI GUANGYU AUTOMOBILE AIR CONDITIONING COMPRESSOR
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Patent Information
- Application Number
- CN202521049859.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-08
- Estimated Expiration
- 2035-05-27
AI Technical Summary
Technical Problem
In existing bidirectional compressors, the presence of shaft seal retaining rings increases the number of parts, making it difficult to effectively reduce costs.
Method used
The shaft seal sealing structure adopts a shaft seal retaining ring-less design. By setting three sections with different inner diameters in the shaft diameter end hole of the front cover, the shaft seal is back-pressed into the first section, eliminating the need for machining the shaft seal retaining ring and the front cover retaining ring groove, and changing the shaft seal press-fit direction.
Benefits of technology
This achieved a reduction in compressor production costs without compromising sealing reliability.
✦ Generated by Eureka AI based on patent content.
Abstract
The shaft seal sealing structure without the shaft seal check ring comprises a front cover, a shaft seal, a main shaft, a cylinder body and a rear cover, the main shaft penetrates through the front cover, the shaft seal, the cylinder body and the rear cover, the front cover and the rear cover are installed on the front portion and the rear portion of the cylinder body respectively, and the rear end of the main shaft is connected with the rear cover. The front end of the main shaft is fixed in a shaft diameter end hole of the front cover; three hole sections with different inner diameters exist in a shaft diameter end hole of the front cover, a third hole section, a second hole section and a first hole section are arranged from the opening portion of the shaft diameter end hole to the inner side, the inner diameter of the first hole section is equal to the inner diameter of the second hole section, the inner diameter of the third hole section is equal to the inner diameter of the first hole section, and the shaft seal is assembled in the first hole section. The utility model solves the problem of how to reduce the cost of the two-way compressor in the prior art.
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