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A fan air inlet muffler

An air inlet and muffler technology, applied in the direction of machines/engines, mechanical equipment, liquid fuel engines, etc., can solve the problems of large volume, complex production process, unsatisfactory noise reduction effect, etc., achieve small volume, reduce fan noise, reduce Noise effect noticeable effect

Active Publication Date: 2018-08-07
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of large volume, complex manufacturing process and unsatisfactory noise reduction effect of the current fan air inlet muffler, and to design a fan air inlet muffler with small volume, simple structure and good noise reduction effect

Method used

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  • A fan air inlet muffler
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Experimental program
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Embodiment Construction

[0029] The present invention will be further explained below in conjunction with the drawings.

[0030] Such as figure 1 As shown, a muffler for the air inlet of a fan is installed at the air inlet pipe 1 of the fan and includes: a fixed plate 2 and a sound insulation cover 3; the sound insulation cover 3 is a square cover on the air inlet pipe 1 of the fan, The shell of the sound insulation cover 3 is a solid plate; the middle of the front plate of the shell has a circular hole for the fan inlet pipe 1 to pass through; on both sides of the circular hole, two rectangular openings of the same size are symmetrically opened As an air inlet

[0031] Such as figure 2 with image 3 As shown, inside the sound insulation cover 3, a U-shaped perforated plate 4 is provided on both sides of the air inlet pipe 1 of the fan, which forms a U-shaped air inlet channel 5 with the outer shell of the sound insulation cover 3; The rear plate of the plate 4 has a round hole which communicates with th...

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Abstract

The invention provides a fan air inlet muffler, which is installed at the fan air inlet pipe (1), comprising: a fixed plate (2) and a sound insulation cover (3); the sound insulation cover (3) is a cover for the fan inlet The square cover on the air duct (1), the shell of the sound insulation cover (3) is a solid plate; there is a round hole in the middle of the front plate of the shell, through which the air inlet pipe (1) of the fan passes; On both sides, two rectangular openings of the same size are symmetrically opened as air inlets; inside the sound insulation cover (3), a U-shaped perforated plate (4) is provided on both sides of the fan inlet pipe (1). ), form a U-shaped air inlet channel (5) with the shell of the sound insulation cover (3); a round hole is arranged on the rear plate of the U-shaped perforated plate (4), which communicates with the fan air inlet pipe (1) ; A conical deflector (6) is provided on the inner wall of the rear panel of the shell of the sound insulation cover (3) facing the air inlet of the fan, for guiding the wind into the air inlet of the fan.

Description

Technical field [0001] The invention relates to the field of muffler equipment, in particular to a muffler for an air inlet of a fan. Background technique [0002] In recent years, with the rapid development of social economy, noise pollution has attracted more and more attention. Working in high-noise industrial sites for a long time, the staff will have symptoms such as auditory fatigue, headaches, tinnitus, or even loss of hearing in severe cases; therefore, noise management in industrial sites becomes more and more important. [0003] At present, the fan mainly uses air inlet muffler to reduce noise. The air inlet muffler generally has the problems of large volume, complicated manufacturing process, and general noise reduction effect. Summary of the invention [0004] The purpose of the present invention is to overcome the disadvantages of large volume, complicated manufacturing process and unsatisfactory noise reduction effect of the current fan air inlet muffler, and designs ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/66
Inventor 田静程晓斌周启君巩杨军张纯王文彬
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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