Scroll compressor with shaft balancer and bushing balancer

US20260022699A1Active Publication Date: 2026-01-22SANDEN CORP
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Patent Information

Application Number
US18/850806
Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Priority Date
2022-04-22
Filing Date
2023-03-21
Publication Date
2026-01-22
Estimated Expiration
2043-03-21

AI Technical Summary

Technical Problem

Existing scroll compressors face challenges in effectively suppressing the influence of centrifugal force resulting from the orbital motion of the orbiting scroll, leading to increased noise and vibration.

Method used

The integration of a bushing balancer with the eccentric bushing and a shaft balancer with the rotary shaft, where the center of gravity of each balancer is positioned to counterbalance the centrifugal forces, thereby reducing the influence of orbital motion.

Benefits of technology

This configuration effectively suppresses centrifugal forces, reducing noise and vibration, maintaining sealing performance, and preventing wear on the spiral walls, while enhancing low-noise and low-vibration performance.

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Abstract

In a scroll compressor with a first line VL passing through a center line CL0 of a rotary shaft 30 and a center line CL2 of an eccentric bushing 72, and with a second line HL passing through the line CL0 and being orthogonal to the line VL, a center of gravity G1 of a bushing balancer 721 integral with the bushing 72 is located opposite to the line CL2 across the line HL and opposite to a center line CL1 of an eccentric pin 71 across the line VL, while a center of gravity G2 of a shaft balancer 31 integral with the shaft 30 is located opposite to the line CL2 across the line HL, and on the same side as the line CL1 relative to the line VL.
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Citation Information

Patent Citations

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