一种涡旋压缩机回油润滑系统

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By designing a return lubrication system in the scroll compressor where the lubricating oil flows with the refrigerant, the problem of the lubricating oil not being able to be directly supplied to the bearings was solved, achieving effective lubrication of the moving disc bearing and the main bearing, extending bearing life and reducing power consumption.

CN224515392UActive Publication Date: 2026-07-17济南瑞青科技有限公司

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: 济南瑞青科技有限公司
Filing Date: 2025-07-28
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

In the existing lubrication system of scroll compressors, lubricating oil cannot be directly supplied to the bearings, resulting in poor lubrication, affecting bearing life, and consuming compressor power.

Method used

Design a scroll compressor oil return lubrication system that allows lubricating oil to flow with the refrigerant, circulate through the flow channels of the stationary and moving discs, and directly supply lubrication to the moving disc bearing and main bearing. Use a throttle valve and filter screen to prevent impurities from entering, forming an oil circuit circulation.

Benefits of technology

This achieves adequate lubrication of both the moving bearing and the main bearing, extending bearing life and reducing power consumption.

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Abstract

本实用新型公开了一种涡旋压缩机回油润滑系统，动盘的前端配合有固定设置的静盘，所述静盘上设有第一流道，静盘的左端面上设有所述第一流道的第一进口，静盘的右端面上设有所述第一流道的第一出口；所述动盘上设有第二流道，所述第二流道的左端面上设有所述第二流道的第二进口，所述第二流道的右端面上设有所述第二流道的第二出口；在动盘转动的部分行程中，第一出口与第二进口相连通，使得第一流道和第二流道相连通；在高压壳体的制冷剂出口处设有分油管。本实用新型可以使润滑油随制冷剂流动，形成润滑油的油路循环，有效的对动盘轴承、主轴承以及动盘进行润滑，延长了轴承的使用寿命。

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Claims

1. A scroll compressor oil return lubrication system, comprising a low-pressure housing (4) and a high-pressure housing (1), wherein a main shaft (6) is rotatably mounted in the middle position of the low-pressure housing (4), the main shaft (6) is rotatably mounted in the low-pressure housing (4) via a main bearing (12), a motor rotor (13) and a motor stator (14) are provided in the middle position of the main shaft (6), and a moving disc (3) is eccentrically mounted at the front end of the main shaft (6) via a moving disc bearing (11), and a stationary disc (2) is fixedly mounted at the front end of the moving disc (3), characterized in that: The stationary plate (2) is provided with a first flow channel (9), the left end face of the stationary plate (2) is provided with a first inlet (2a) of the first flow channel (9), and the right end face of the stationary plate (2) is provided with a first outlet (2b) of the first flow channel (9). The moving disk (3) is provided with a second flow channel (5), and the left end face of the second flow channel (5) is provided with a second inlet (5a) of the second flow channel (5), and the right end face of the second flow channel (5) is provided with a second outlet (5b) of the second flow channel (5); during part of the rotation of the moving disk (3), the first outlet (2b) is connected to the second inlet (5a), so that the first flow channel (9) and the second flow channel (5) are connected; An oil distribution pipe (7) is provided at the refrigerant outlet of the high-pressure casing (1).

2. The scroll compressor oil return lubrication system as described in claim 1, characterized in that: The outer surface of the oil distribution pipe (7) is tapered and tapers towards the rear end, and the front end of the oil distribution pipe (7) is the refrigerant outlet (7a).

3. A scroll compressor oil return lubrication system as recited in claim 1 wherein: A throttle valve (8) is installed at the first inlet (2a) of the first flow channel (9). The throttle valve (8) has a central micro-hole (8c) coaxially arranged inside. An O-ring (8b) is fitted on the outside of the throttle valve (8) to seal the throttle valve (8) with the inner wall of the first flow channel (9).

4. A scroll compressor oil return lubrication system as recited in claim 3 wherein: A filter screen (8a) is also fitted on the outside of the throttle valve (8).

5. The oil return lubrication system of claim 1, wherein: A screw with a hole (10) is installed on one side of the moving plate (3). The screw with a hole (10) is installed in the second flow channel (5). The screw with a hole (10) has a micro-hole flow channel inside. The side opening (10a) of the micro-hole flow channel is connected to the second inlet (5a) of the second flow channel (5). The bottom opening (10b) of the micro-hole flow channel is connected to the second flow channel (5).

6. A scroll compressor oil return lubrication system as recited in claim 5 wherein: The screw with holes (10) is installed at the second inlet (5a) of the second flow channel (5) by means of a threaded connection.

7. A scroll compressor oil return lubrication system as set forth in claim 1 wherein: A pin is installed on one side of the moving plate (3), and the pin is installed at the second inlet (5a) by interference fit; the pin is provided with a micro-hole flow channel, the side opening of the micro-hole flow channel is connected to the second inlet (5a) of the second flow channel (5), and the bottom opening of the micro-hole flow channel is connected to the second flow channel (5).