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Novel dissipative and resistive composite exhaust silencer and compressor with same

An exhaust muffler, composite technology, applied in the direction of machines/engines, mechanical equipment, liquid fuel engines, etc., can solve the problems of narrow frequency band, inability to realize resistive noise reduction and resistive noise reduction, poor middle and high frequency noise reduction effect, etc. , to achieve the effect of widening the frequency band, excellent noise reduction effect and noise reduction

Active Publication Date: 2014-08-06
PANASONIC WANBAO GUANGZHOU COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has the following problems: 1) the existing silencer is a kind of resistant silencer, which has good low-frequency noise reduction characteristics; 2) but the noise reduction band is narrow, and the noise reduction effect on medium and high frequencies is poor
The resistive muffler can eliminate noise in a wide range of medium and high frequencies, especially for high-frequency sounds. Combined with resistive sound attenuation, the sound attenuation effect of the single-layer expansion chamber is not ideal

Method used

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  • Novel dissipative and resistive composite exhaust silencer and compressor with same
  • Novel dissipative and resistive composite exhaust silencer and compressor with same
  • Novel dissipative and resistive composite exhaust silencer and compressor with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] like Figures 7 to 12 As shown, the compressor of the present invention with a novel impedance composite exhaust muffler includes a compressor casing 1, a compression mechanism 2, a stator 3, a rotor 4 and a liquid accumulator 5 (such as Figure 7 shown), wherein the compression mechanism 2 is mainly composed of a cylinder 21, a piston 22, an upper bearing 23, a crankshaft 24, a lower bearing 25, a slider 26, a spring and an impedance composite exhaust muffler 20, wherein the upper middle of the upper bearing 23 A convex upper shaft sleeve 231 is provided.

[0040] like Figures 8 to 12 As shown, the upper bearing 23 is connected to the impedance composite exhaust muffler 20, and the muffler has a bottom plate 201, and the bottom plate 201 is fixed on the upper bearing 23 by a fastener (bolt 6), and the bottom plate 201 is upward An upper sound-absorbing cover 202 is integrally extended, the upper sound-absorbing cover 202 is provided with a lower sound-absorbing cove...

Embodiment 2

[0047] Such as Figure 13 As shown, the impedance compound exhaust muffler 20 described in this embodiment has a bottom plate 201, and an upper sound-absorbing cover 202 is integrally extended upward from the bottom plate 201, and a lower-layer sound-absorbing cover is provided inside the upper sound-absorbing cover 202. 203 ; the lower expansion chamber 205 is set inside the lower sound-absorbing cover 203 , and the upper-layer expansion chamber 206 is between the lower-layer sound-absorbing cover 203 and the upper-layer sound-absorbing cover 202 , and the upper-layer expansion chamber 206 is filled with a resistive sound-absorbing material layer 204 . The lower sound-absorbing cover 203 , the resistive sound-absorbing material layer 204 and the middle part of the upper sound-absorbing cover 202 are provided with a shaft hole 207 adapted to the upper bushing of the upper bearing.

[0048] The lower sound-absorbing cover 203 is provided with a lower exhaust hole 2031 communica...

Embodiment 3

[0053] Such as Figure 14 As shown, the impedance compound exhaust muffler 20 described in this embodiment has a bottom plate 201, and an upper sound-absorbing cover 202 is integrally extended upward from the bottom plate 201, and a lower-layer sound-absorbing cover is provided inside the upper sound-absorbing cover 202. 203 ; the lower expansion chamber 205 is set inside the lower sound-absorbing cover 203 , and the upper-layer expansion chamber 206 is located between the lower-layer sound-absorbing cover and the upper-layer sound-absorbing cover, and the upper-layer expansion room is filled with a resistive sound-absorbing material layer 204 . The lower sound-absorbing cover 203 , the resistive sound-absorbing material layer 204 and the middle part of the upper sound-absorbing cover 202 are provided with a shaft hole 207 adapted to the upper bushing of the upper bearing.

[0054] The lower sound-absorbing cover 203 is provided with a lower exhaust hole 2031 communicating wit...

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Abstract

The invention discloses a novel dissipative and resistive composite exhaust silencer which comprises a bottom plate. An upper silencing cover extends integrally upward from the bottom plate and a lower silencing cover is arranged in the upper silencing cover; an upper expanding room is arranged between the upper silencing cover and the lower silencing cover, and is filled with a dissipative silencing material layer; a lower exhaust hole is formed in the lower silencing cover, the upper silencing cover is provided with an upper exhaust hole, and the dissipative silencing material layer is internally provided with an exhaust channel communicated with the upper and lower exhaust holes. By adopting the innovative design of the double silencing covers and filling the upper expanding room between the double silencing covers with the dissipative silencing material layer as well as combining dissipative and resistive silencing, the silencing frequency band is expanded, so that the operating noise of a compressor is reduced. In addition, by virtue of the innovative design of the double silencing covers, the structure of the exhaust holes can be further improved to achieve an excellent silencing effect.

Description

technical field [0001] The invention relates to a muffler, in particular to a novel impedance composite muffler applied to a compressor. [0002] The present invention also relates to a compressor adopting the above-mentioned novel impedance compound muffler. Background technique [0003] Existing compressor generally is made up of compressor casing 1, compression mechanism (pump body) 2, stator 3, rotor 4 and liquid accumulator 5 (as figure 1 shown), wherein the compression mechanism 2 is mainly composed of a cylinder 21, a piston 22, an upper bearing 23, a crankshaft 24, a lower bearing 25, a slider 26, a spring 27 and a muffler 20` (such as figure 2 , 3 and 4). Wherein, an upwardly protruding upper shaft sleeve 231 is provided in the middle of the upper part of the upper bearing 23, and the muffler 20' is a thin-walled cover body, which has a bottom plate 201', and the bottom plate 201' integrally extends upwards to form a stepped The sound-absorbing cover 208`, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C29/06
Inventor 刘国柱炊军立
Owner PANASONIC WANBAO GUANGZHOU COMPRESSOR