Volume-variable silencer
By setting up partitions and shunt components in the muffler housing and automatically adjusting the volume of the resistive segment, the problem that existing mufflers are difficult to equalize low-frequency and high-frequency noise cancellation under different air flow rates is solved, and a more stable muffler effect is achieved.
CN222672614UActive Publication Date: 2025-03-25江苏友帮船用设备有限公司
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Patent Information
- Application Number
- CN202420306586.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-20
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-02-20
AI Technical Summary
Technical Problem
When existing mufflers deal with different air flows, it is difficult to balance the cancellation effects of low-frequency and high-frequency noise, and may cause regenerative noise problems.
Method used
A volume variable silencer is designed, by setting two partitions in the housing, dividing them into two resonant cavity and a resistive cavity, using the shunt assembly and spring mechanism, the volume of the resistive segment is automatically adjusted to balance the proportion of airflow entering different cavity.
Benefits of technology
It achieves a good elimination effect for low-frequency and high-frequency noise under different air flow conditions, avoiding the generation of regenerative noise and improving the stability of the silencer.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to the technical field of silencers, and discloses a volume-variable silencer which comprises a shell, two partition plates are arranged in the shell and divide the shell into two resonant cavities and a resistive cavity, the resistive cavity is arranged in the middle, the two ends of the shell are communicated with an air inlet pipe and an exhaust pipe respectively, and the two ends of the shell are communicated with an air inlet pipe and an air outlet pipe respectively. The ends, extending into the shell, of the air inlet pipe and the exhaust pipe penetrate through the two partition plates, the two partition plates are jointly connected with a connecting pipe in a penetrating mode, the two resonant cavities are each internally provided with a flow dividing assembly, and the two flow dividing assemblies are connected with pipe openings of the air inlet pipe and the connecting pipe correspondingly. According to the silencer, the problems that the silencing effect on high frequency is poor when the air flow is large and the silencing effect on low frequency is poor when the air flow is small are solved, the size of the air flow entering different cavities is balanced by adjusting the volume of the air pipe resistive section, and the sound absorption effect is improved.
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