Resonance structure and silencer composed of resonance structure

A technology of resonance structure and resonance plate, which is applied in the direction of sound-emitting devices and instruments, can solve the problems of narrow muffler frequency band and application limitation of resistant mufflers, etc., and achieve narrow noise reduction band, obvious synergistic effect, and low-frequency noise reduction frequency bandwidth. Effect

Pending Publication Date: 2021-07-23
ZISEN ENVIRONMENTAL TECHNOLOGY CO LTD
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AI Technical Summary

Problems solved by technology

[0004] Resistant mufflers use changes in the structure of the muffler to achieve noise reduction, but for lower frequency mufflers, the muffler needs a larger volume, and this type of muffler has a narrower muffler frequency band, so it can only be used for certain specific frequencies. Noise, so the application of the resistant muffler in actual use is greatly limited

Method used

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  • Resonance structure and silencer composed of resonance structure
  • Resonance structure and silencer composed of resonance structure
  • Resonance structure and silencer composed of resonance structure

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Embodiment Construction

[0035] Such as Figure 1-2 As shown, a resonance structure includes a surrounding sealing plate 1, an internal side resonance plate 2, and a surface resonance plate. The surface resonance plate includes a microporous sound-absorbing plate 3 and a panel 4, and the length of the internal side resonance plate is L1, the length of the microporous sound-absorbing panel is L2, and the width between the two internal side resonance panels is d1; the length L1 of the internal side resonance panel is different from the length L2 of the microporous sound-absorbing panel, where, figure 1 The length of L1 is longer in figure 2 The length of L2 in the middle is longer. By adjusting L1, L2 and d1, different noise reduction requirements can be customized and designed to meet the use of different scenarios, which greatly improves the applicability of the muffler. Among them, L1 and L2 affect the frequency, and d1 affects the frequency. peak.

[0036] Such as Figure 3-4 As shown, it furthe...

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Abstract

The invention provides a resonance structure and a silencer comprising the resonance structure, the resonance structure comprises peripheral sealing plates, at least one group of internal side type resonance plates and two side surface resonance plates, and the arrangement direction of the internal side type resonance plates is consistent with the sound propagation direction; the two side surface resonance plates are composed of micropore sound absorption plates, and/or panels, and/or perforated plates. According to the silencer comprising the resonance structure, the low-frequency and high-frequency silencing effects can be greatly improved while it is guaranteed that the intermediate-frequency silencing effect meets the requirement, and the silencing frequency band is widened; a resistive sound absorption material can be filled in the resonance structure as required, so that the high-frequency and medium-frequency noise elimination effects are further improved; in addition, the applicability of different silencing frequencies can be improved by adjusting the internal structure of the resonance structure.

Description

technical field [0001] The invention belongs to the technical field of mufflers, and in particular relates to a resonance structure with good full-frequency noise reduction effects, especially low-frequency and high-frequency effects, and wide noise reduction frequency bandwidth, and a noise reduction device composed of the same. Background technique [0002] In the prior art, common mufflers can be roughly divided into resistive mufflers, resistive mufflers, impedance compound mufflers, etc. according to their different muffler principles and structures. It is the most widely used, because the resistive muffler has the advantages of good intermediate frequency muffler performance and wide frequency band of intermediate frequency muffler. Resistive mufflers are usually divided into matrix mufflers and sheet mufflers according to different structures. The main structure is a metal orifice plate on the surface, and the inside of the orifice plate is filled with resistive sound...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/162G10K11/16
CPCG10K11/16G10K11/162
Inventor 干灵锋张晓杰张芳
Owner ZISEN ENVIRONMENTAL TECHNOLOGY CO LTD
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