A crankshaft assembly, compressor and refrigerator

By installing a bearing sleeve on the crankshaft and opening an oil supply groove on its outer wall, the problem of the existing crankshaft's inability to adjust the oil supply groove is solved, enabling flexible adjustment of the lubricating oil supply, reducing friction and power consumption, and improving the compressor's operating performance.

CN116816638BActive Publication Date: 2026-05-29GREE ELECTRIC APPLIANCE INC OF ZHUHAI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GREE ELECTRIC APPLIANCE INC OF ZHUHAI
Filing Date
2023-08-14
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

The existing crankshafts used in refrigerators have complex and costly manufacturing processes, cannot adjust the oil supply groove according to the oil pump volume requirements, have high frictional power consumption and poor frictional heat dissipation, which affects the normal operation of the compressor.

Method used

A bearing sleeve is fitted onto the spindle, and an oil supply groove is opened on the outer wall of the bearing sleeve to form an oil supply circuit. The amount of lubricating oil supplied is adjusted by adjusting the bearing sleeve. Aluminum alloy material is used to replace part of the cast iron material to reduce friction.

Benefits of technology

It enables the adjustment of lubricant supply according to demand, reducing friction, lowering compressor power consumption, improving noise and vibration, and reducing processing costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN116816638B_ABST
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Abstract

The application provides a crankshaft assembly, a compressor and a refrigerator, the crankshaft assembly comprising a main shaft and a bearing sleeve sleeved on the main shaft, a center hole is arranged in the main shaft in the axial direction, an oil supply groove is arranged on the outer wall of the bearing sleeve, and an oil inlet hole of the oil supply groove is communicated with the center hole to form an oil supply circuit. The crankshaft assembly can select different bearing sleeves according to the oil pumping demand of the compressor, can ensure the strength of the crankshaft assembly, can adjust the oil supply according to the demand, can reduce the friction between the crankshaft assembly and the crankshaft hole of the cylinder block, can reduce the abrasion, can reduce the power consumption of the compressor, and can improve the noise and vibration.
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