Scroll compressor with oil return mechanism

By designing an oil return mechanism in the scroll compressor, the high-pressure chamber pressure guides the lubricating oil to the sealing groove and moving parts, solving the problem of the lubricating oil dead zone, realizing the efficient recycling of lubricating oil, and improving the performance and reliability of the compressor.

CN122359320APending Publication Date: 2026-07-10SHANGHAI VELLE AUTOMOBILE AIR CONDITIONER CO LTD +1
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Patent Information

Application Number
CN202610730794.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-26
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

In existing scroll compressors, the lubricating oil forms a dead zone in the high-pressure chamber, which cannot be recycled, resulting in decreased lubrication performance, reduced cooling capacity, and increased power consumption.

Method used

Design a scroll compressor with an oil return mechanism. By setting multiple oil return channels and throttling valves on the stationary plate, the high-pressure chamber pressure is used to introduce lubricating oil into the sealing groove and moving parts to form an oil film, thereby improving sealing performance and lubrication efficiency, and reducing leakage and wear.

Benefits of technology

It improves the utilization rate of lubricating oil, reduces power consumption, enhances the sealing performance of the device and the lifespan of parts, and improves the volumetric efficiency and reliability of the compressor.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention discloses a scroll compressor with an oil return mechanism, and belongs to the field of scroll compressors, the scroll compressor comprises a compressor body, a static disc and a movable disc, the static disc is fixedly connected to the end part of the compressor body, and the movable disc is rotatably arranged at one end, close to the static disc, of the compressor body through a bearing and a crankshaft; a high-pressure cavity is formed in the side, away from the compressor body, of the static disc, an oil separator is arranged in the high-pressure cavity, and a low-pressure cavity is formed in the position, on one side of the movable disc, of the compressor body. The first oil return channel and the throttling valve are arranged at the bottom of the high-pressure cavity and matched with the second oil return channel, the third oil return channel and the sealing channel to form two oil ways, lubricating oil in a dead zone can be guided into a sealing groove through the pressure of the high-pressure cavity, pressure for jacking up the sealing strip is provided at the bottom of the sealing strip, the sealing strip is pressed, and the sealing effect is improved. Therefore, the sealing performance is improved, leakage is reduced, and the performance of the compressor is improved.
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