Silencing unit, silencing module, silencer, compressor and silencing control method

CN122014624APending Publication Date: 2026-05-12GREE ELECTRIC APPLIANCE INC OF ZHUHAI +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GREE ELECTRIC APPLIANCE INC OF ZHUHAI
Filing Date
2025-12-30
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Traditional silencers rely on fixed geometry for noise reduction, which cannot adapt to changes in noise frequency under different compressor loads, resulting in a significant decrease in noise reduction or even noise amplification.

Method used

The noise reduction unit adopts a prism structure formed by bending a perforated plate. It uses magnetorheological medium and electromagnetic drive components to switch between sound absorption mode and reflection mode. The noise frequency band under different load conditions is adapted by controlling the flow state of the magnetorheological medium.

Benefits of technology

It enables rapid switching of the silencing unit between different acoustic working modes, improves the effective silencing area and silencing effect per unit volume, and solves the problem of poor adaptability of traditional silencers under working conditions.

✦ Generated by Eureka AI based on patent content.

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    Figure CN122014624A_ABST
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Abstract

The invention relates to the technical field of noise reduction, in particular to a silencing unit, a silencing module, a silencer, a compressor and a silencing control method. The silencing unit comprises a first prism, a second prism, a first sealing plate, a second sealing plate, a first sealing film, a second sealing film and an electromagnetic driving assembly, the first sealing film is attached to the inner surface of the first prism, and the second sealing film is attached to the outer surface of the second prism; a first sealing cavity is defined by the first sealing film, the second sealing film, the first sealing plate and the second sealing plate, and the first sealing cavity is configured to be filled with magnetorheological media. The magnetorheological state of the magnetorheological medium is controlled through the magnetic field, rapid switching of the silencing unit among different acoustic working modes is achieved, the silencing unit can dynamically adapt to different frequency band noise generated by the compressor under different load working conditions, and the problems that a traditional silencer is fixed in silencing frequency band and poor in working condition adaptability are solved.
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