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Muffler

A muffler and casing technology, which is applied in the direction of mufflers, machines/engines, engine components, etc., can solve the problems of reducing production costs, large emission noise of dehumidifiers, etc., and achieves wide application range, small resistance loss and strong practicability Effect

Inactive Publication Date: 2009-08-26
CAIHONG COLOUR KINESCOPE GENERAL FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This new type of muffler solves the long-standing problem of high emission noise from the dehumidifier, and can reduce the emission noise by 20dB(A), thereby achieving the purpose of noise reduction and reducing production costs

Method used

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Embodiment Construction

[0016] The present invention is described in further detail below in conjunction with accompanying drawing:

[0017] see figure 1 , 2 , 3 and 4, a muffler comprising a shell 1, an air inlet 2, an exhaust port 3, an outer tube 4, an inner tube 5, an inner tube aperture 6, an annular baffle 7 and a baffle aperture 8, the shell 1 is a rectangular parallelepiped welded by steel plates. The inner wall of the steel plates is adhered with sound-absorbing materials. An air inlet 2 is provided on the front of the shell 1, and an exhaust port 3 is set on the side of the shell 1. The exhaust port 3 is fixedly connected to and communicated with the shell 1. The inner tube 5 and the outer tube 4 are concentrically arranged, the length of the outer tube 4 is greater than the length of the inner tube 5, and two-thirds of the length of the inner tube 5 is inside the outer tube 4, and the tube at one end of the outer tube 4 near the air inlet 2 The mouth and the inner pipe 5 are sealed with ...

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Abstract

The invention discloses a novel muffler which not only can block off the transmission of acoustic waves and enable air flows to pass through, but also can eliminate emptying noise of a purification apparatus. Such a muffler is provided with a large amount of tiny pores and is capable of filtering the discharged air flows into countless small air flows, the gas pressure is reduced and the flow speed is diffusely diminished by reflecting partial acoustic waves to an acoustic source direction via an abrupt change location of acoustic characteristics within a pipeline, then secondarily passing the reflected acoustic waves through the pipeline and finally by acoustic absorption of an acoustic absorbing material of a filter at an inlet of a waste air compressor, thus achieving the aim of noise elimination in the end to thereby reduce environmental pollution and noises in industrial boundary. The invention has the advantages of small volume, large noise elimination quantity, small investment, simple structure, convenient installation, small loss of resistance and the like, and is wider in effective frequency band, extensive in application range and best in eliminating the middle / high frequency noises.

Description

Technical field: [0001] The invention belongs to the field of noise reduction, and relates to a silencer device, especially capable of eliminating medium and high-frequency noise, and is an economical silencer device with better noise reduction effect on the market at present. Background technique: [0002] Air dryer (commonly called dehumidifier) ​​is an important equipment for purifying air in our factory. Purified air is widely used in the power source of pneumatic equipment, instrument gas and cooling source of products, so dehumidifier plays an important role in production. It plays an important role, but the dehumidifier is a kind of strong noise equipment. When it is vented, the regeneration gas is discharged to the atmosphere to generate strong noise. When venting, due to sudden changes in the pressure of the compressed air, the volume expands rapidly and enters the atmosphere at a high flow rate, resulting in strong eddy current noise at the outlet of the pipeline. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N1/00F01N1/24
Inventor 张广平李卓兵陶光
Owner CAIHONG COLOUR KINESCOPE GENERAL FACTORY
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