Connecting device capable of reducing noise of fan

A technology for connection devices and fans, which is applied to the components of pumping devices for elastic fluids, mechanical equipment, machines/engines, etc., can solve the problems of high cost and complicated production of noise reduction devices, and achieve good tightness and structure Simple, overall structure and scientific effect

Inactive Publication Date: 2018-07-10
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current noise reduction device is

Method used

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  • Connecting device capable of reducing noise of fan
  • Connecting device capable of reducing noise of fan
  • Connecting device capable of reducing noise of fan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Such as figure 1 , figure 2 and image 3 A connection device for reducing fan noise is shown, including: noise reduction section 1, contraction section 2, rectification section 3, iron hoop 4 and soft connection 5;

[0023] The noise reduction section 1 is a hollow square cylinder, one end is an air inlet, and the other end is connected to one end of the contraction section 2. The outer surface of the noise reduction section 1 is made of a steel plate to form a shell 7, and the inner surface of the shell 7 is provided with rock wool. 9. The rock wool 9 is wrapped with glass cloth 10;

[0024] In the cavity of the noise reduction section 1, one or more vertical sound-absorbing panels 6 and one or more horizontal sound-absorbing panels 8 are arranged. The vertical inner wall of the rectangular cavity inside section 1 is parallel, and the horizontal sound-absorbing board 8 is parallel to the horizontal inner wall of the rectangular cavity inside the noise reduction sec...

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PUM

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Abstract

The invention discloses a connecting device capable of reducing the noise of a fan. The connecting device comprises a noise reducing section, a shrinkage section, a rectifying section, an iron hoop and a soft connector; the noise reducing section is a square cylindrical column provided with a vertical noise absorbing plate and a transverse noise absorbing plate inside; the outer surface is produced as a shell by a steel plate; the inner surface is provided with rock wool; the rock wool is wrapped by glass wool cloth; one end is an air inlet, and the other end is connected with a shell at one end of the shrinkage section; the vertical noise absorbing plate and the transverse noise absorbing plate are perpendicular to each other to form a square frame; a rectangular plate formed by wrappingthe rock wool by the glass wool cloth is embedded in the square frame; the shrinkage section is a top-round and bottom-square cylinder; the rock wool is arranged on the inner surface, and is wrapped by the glass wool cloth; one end of the shell of the cylinder is welded with a shell of a noise reducing body, and the other end is welded with a shell of the rectifying section; the rectifying sectionis a cylindrical column; the rock wool is arranged on the inner surface, and is wrapped by the glass wool cloth; one end is connected with the shell of the shrinkage section, and the other end is connected with the soft connector by using the iron hoop; and the soft connector is connected with an inlet of the fan.

Description

technical field [0001] The invention relates to the professional field of acoustics and structure, in particular to a connection device for reducing fan noise. Background technique [0002] The machine will generate noise during operation, which is mainly generated by the airflow at the inlet of the fan, especially the high-pressure fan and high-power fan, which will generate strong noise during operation and have a great impact on the surrounding environment. The current noise reduction device is complicated to manufacture and the cost is high. Contents of the invention [0003] Aiming at the above technical problems, the present invention proposes a connection device that is simple to manufacture and can effectively reduce the noise of the fan, thereby reducing the pollution of the noise to the environment. [0004] In order to achieve the above purpose, it is realized through the following technical solutions: [0005] A connection device for reducing fan noise, inclu...

Claims

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Application Information

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IPC IPC(8): F04D29/66
CPCF04D29/663F04D29/664
Inventor 赵岩
Owner NORTHEASTERN UNIV
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