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Flexible silencer

A muffler, a flexible technology, applied in the direction of hoses, pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of inconvenient construction, small space, and affecting the quality of the project, and achieve good noise reduction effect, low cost, and convenient installation Effect

Inactive Publication Date: 2009-01-07
周菊明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The muffler usually used is installed in the ventilation duct and placed near the air outlet; and the structure of the muffler is a rigid structure on the outside, and the inside is filled with sound-absorbing materials. bent
The commonly used ventilation system is installed inside the ceiling, where the space is small, and various fire-fighting, strong, and weak current pipes are criss-crossed. It is very difficult to install the existing muffler, which causes great inconvenience in construction and affects the quality of the overall project.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A flexible muffler, the two ports are interface flanges 11, the middle part is provided with a muffler inner hose 1, the muffler inner hose 1 is densely covered with muffler holes 7, and the outside of the muffler inner hose 1 is covered with a muffler outer hose 2; The outer silencing hose 2 is densely covered with silencing holes 8 . A sound-absorbing cavity 9 is provided between the sound-absorbing inner hose 1 and the sound-absorbing outer hose 2, and a fixing ring 10 is arranged in the middle of the sound-absorbing cavity 9 to ensure that the sound-absorbing cavity 9 still works when the present invention is bent. to the noise reduction effect. The outside of the noise-absorbing outer hose 2 is provided with an isolation layer plastic film 3. The function of the isolation layer plastic film 3 is to prevent the tiny fibers of the sound-absorbing layer 4 from entering the air duct through the silencer hole 8 of the noise-absorbing outer hose 2. The isolation layer pl...

Embodiment 2

[0035] In Embodiment 1, the caliber of the inner hose 1 in the silencer is a fixed value, while in Embodiment 2, under the condition that the caliber of the outer sleeve 2 of the sound-absorber remains constant, the caliber of the inner hose 1 in the silencer is variable, namely : In the present embodiment, the inner hose 1 of the silencer, the caliber of one section will be greater than or smaller than the diameter of the inner circle interface 12 of the interface flange 11, but the condition is to be less than the caliber of the outer hose 2 of the silencer. In this way, a variable diameter area can be formed in the gas flow channel of the present invention, so that the gas delivery path can be changed, causing the noise and vibration to be reflected in this variable diameter area, thereby achieving a better noise reduction effect.

Embodiment 3

[0037] In the above-mentioned embodiments, the inner sound-absorbing hose 1 is arranged inside the outer sound-absorbing hose 2 in a single form. In this embodiment, the sound-absorbing inner hose is arranged inside the composite hose 5 in the form of a sound-absorbing inner hose bundle 13 .

[0038] Such as Figure 4-Figure 7 As shown, the interface flange 14 involved in this embodiment has a plurality of interfaces 15 connected to the ports of the sound-absorbing inner hose bundle 13; the sound-absorbing inner hose bundle 13 is spirally arranged inside the composite hose 5, as Image 6 As shown; the isolation layer plastic film 3 and the sound-absorbing layer 4 are sequentially arranged between the sound-absorbing inner hose bundle 13 and the composite hose 5; When the upper interface 15 is connected, it is fixed with a clip 16, and the composite hose 5 is connected with the outer circle of the interface flange 14.

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Abstract

The invention discloses a flexible silencer which comprises a termination flange, a silencing internal hose, a silencing external hose, an isolation layer, a sound absorbent lining and a composite hose. The flexible silencer is characterized in that: the silencing internal hose is densely equipped with a plurality of silencing holes, the external part of the silencing internal hose is covered with the external silencing hose; the silencing external hose is densely equipped with a plurality of silencing holes, a sound absorbent cavity is positioned between the silencing internal hose and the silencing external hose, a plurality of fixing rings are arranged in the sound absorbent cavity in interval, the external part of the silencing external hose is equipped with the isolation layer, the external part of the isolation layer is equipped with the sound absorbent lining, the external part of the sound absorbent lining is covered with the composite hose, and the silencing internal hose and the internal-circular connector of the termination flange are fixedly connected; the silencing external hose, the composite hose and the connector of the external-circular turned-edge connector of the termination flange are fixedly connected mutually. The flexible silencer is made of the flexible material which can be bent, the sound absorbent material and the reasonable silence structure, the invention can be configured according to the environment condition, and has the advantages of low cost, good silence effect and convenient installation.

Description

technical field [0001] The invention relates to a muffler, in particular to a flexible muffler for eliminating airflow noise and vibration generated during gas delivery. Background technique [0002] In industrial production and life, it is often necessary to use fans or similar power devices and pipelines for gas transportation, such as ventilation systems in industrial and mining enterprises, centrally controlled air conditioning systems in buildings, etc. The ventilation volume and wind speed requirements are different, so at the end of the system, that is, near the air outlet, the sound of wind noise and vibration is very loud, which affects people's normal production and life. In order to eliminate the wind noise and vibration generated by the above-mentioned system near the air outlet; technicians will install a muffler on the pipe near the air outlet to eliminate or weaken the sound of wind noise and vibration. The muffler usually used is installed in the ventilation...

Claims

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Application Information

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IPC IPC(8): F16L55/033F16L11/26
Inventor 周菊明
Owner 周菊明
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