Rotary Compressor

By integrating an elastic body with a lower modulus than the vane or cylinder at the outer ends, the rotary compressor mitigates spring fatigue and wear from vane collisions, ensuring reliable operation.

JP7619532B1Active Publication Date: 2025-01-22MITSUBISHI ELECTRIC CORP
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Patent Information

Application Number
JP2024539578
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-03-29
Publication Date
2025-01-22
Estimated Expiration
2043-03-29

AI Technical Summary

Technical Problem

Conventional rotary compressors face issues with spring damage due to fatigue failure caused by abnormal vibrations and collisions during vane flying, especially when liquid enters the suction chamber, leading to premature wear and breakage.

Method used

Incorporation of an elastic body with a smaller longitudinal elastic modulus than the vane or cylinder, positioned at the radially outer end of the vane and cylinder, to absorb impact and reduce collision speed, preventing fatigue failure by moderating the impact loads on the spring.

Benefits of technology

The elastic body effectively reduces collision speed and prevents fatigue failure of the spring, maintaining compressor functionality without increasing size or resistance, thus enhancing durability and reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

a vane (26) arranged to be slidable radially outward from the piston (22) side of the cylinder (23) and to separate a compression chamber; a vane groove (32) defining the sliding direction of the vane and having an opening on the inside of the cylinder; a spring (3) pressing the vane from the radially outside of the cylinder toward the piston side; and an elastic body (31) arranged at least either on the radially outer end of the vane of the cylinder and at an opposing position in the cylinder radially opposing the vane, the elastic body having a smaller modulus of longitudinal elasticity than both the vane and the cylinder.
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Citation Information

Patent Citations

  • JP1976159010U

  • JP1990026787U

  • Rotary compressor

    JP2006329053A

  • Multicylinder compressor

    JP2007009861A

  • Rotary compressor

    JP2009228522A