Unlock instant, AI-driven research and patent intelligence for your innovation.

Inlet silencer

A muffler and oblique hole technology, which is applied in the field of imported mufflers, can solve the problems of increasing wind resistance, not being able to meet the needs of on-site noise reduction effects, poor noise reduction effects, etc., and achieve good noise reduction effects

Inactive Publication Date: 2018-06-05
CHONGQING FANCHENG TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large size of the large fan, it often keeps running continuously during work, which will continuously generate noise pollution, especially around the air inlet and outlet of the ventilation duct, the noise pollution that may be generated can be as high as 110 to 120 decibels, which greatly exceeds the The International Organization for Standardization and my country's relevant industrial construction standards limit industrial noise to an upper limit index of 90 decibels, which greatly affects people's normal work.
[0003] At present, fan mufflers are mainly used for noise reduction of fans on the market, and ordinary fan mufflers have some problems due to their backward structure and single function: for example, due to the unreasonable design of the internal structure of fan mufflers, the wind resistance will be greatly increased while muffler , which will adversely affect the ventilation effect, and the noise reduction effect is also poor. The noise reduction value may be less than 10 decibels, which is far from meeting the noise reduction effect of the noise site.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Inlet silencer
  • Inlet silencer
  • Inlet silencer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Depend on Figure 1 to Figure 3 As shown, an inlet muffler includes an inlet connection part 1, a muffler part 2 and an elbow part 3 connected in sequence; a flow measuring ring 11 is installed on the inlet connection part 1, and its installation position is close to the inlet connection part 1 and At the connection position of the muffler 2, four inner holes with a diameter of 6 mm to 8 mm are symmetrically provided on the flow measuring ring 11; two observation doors 12 are provided on the elbow 3 for maintenance and inspection of the internal conditions of the muffler.

[0020] The muffler 2 includes an outer cylinder 4, a first muffler drainage device 5, a second muffler drainage device 6, a vertical muffler drainage plate 7 and an inner wall orifice plate 8, the first muffler drainage device 5, the second muffler drainage device The second noise elimination and drainage device 6, the vertical noise elimination and drainage plate 7 and the inner wall orifice plate 8...

Embodiment 2

[0023] An inlet muffler, the structure of which is the same as that of Embodiment 1, wherein the value of the included angle A formed by the plane where the inclined orifice plate 10 is installed and fixed and the vertical noise reduction and drainage plate 7 is 45 degrees, and the first noise reduction and drainage device 5 The value of the included angle B formed by the plane formed by the intersection of the two oblique orifice plates 10 close to the hypotenuse of the inner wall orifice plate 8 on the same side and the vertical axis axial direction of the outer cylinder body 4 is 45 degrees; wherein the second elimination The value of the included angle C formed by the plane formed by the intersection of the two oblique orifice plates 10 of the acoustic drainage device 6 with the hypotenuse of the inner wall orifice plate 8 on the same side and the axial direction of the vertical axis of the outer cylinder body 4 is 45 degrees; The diameter of the through holes 13 on the hor...

Embodiment 3

[0025] An inlet muffler, the structure of which is the same as that of Embodiment 1, wherein the value of the included angle A formed by the plane where the inclined orifice plate 10 is installed and fixed and the vertical noise elimination and drainage plate 7 is 60 degrees, and the first noise elimination and drainage device 5 The value of the included angle B formed by the plane formed by the two oblique orifice plates 10 approaching the hypotenuse of the inner wall orifice plate 8 on the same side along the line and the vertical axis axial direction of the outer cylinder body 4 is 60 degrees; wherein the second elimination The value of the included angle C formed by the plane formed by the intersection of the two oblique orifice plates 10 of the acoustic drainage device 6 with the hypotenuse of the inner wall orifice plate 8 on the same side and the axial direction of the vertical axis of the outer cylinder 4 is 60 degrees; The diameter of the through holes 13 on the horizo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Provided is an inlet silencer. The inlet silencer includes an inlet connection part, a silencing part and a curved head part; the silencing part consists of an outer cylinder body, a first silencing drainage device, a second silencing drainage device, a vertical silencing drainage plate and an inner wall pore plate which are connected with one another in sequence; the first silencing drainage device is composed of two oblique pore plates arranged symmetrically, the respective brims, at the same side, of the two oblique pore plates are connected with each other to form an included angle structure, the second silencing drainage device is identical with the first silencing drainage device in structure, and the vertical silencing drainage plate is installed between the first silencing drainagedevice and the second silencing drainage device. The oblique pore plates, the vertical silencing drainage plate and the inner wall pore plate are all made of porous clamping plates. By using the inlet silencer, since the silencing drainage devices adopt the included angle structure and the design of a hollow layer on a cylinder wall, a great silencing effect can be achieved, and the angles of thesilencing drainage devices can be adjusted according to on-site demands to achieve different silencing effects.

Description

technical field [0001] The invention belongs to the field of mufflers, and in particular relates to an inlet muffler used for muffler for fan ducts. Background technique [0002] Large-scale fans are widely used in industrial production. In many fields such as shipbuilding industry, mineral mining industry, energy production industry, and large-scale equipment manufacturing and processing industry, large-scale fans are often used in the production process to continuously ventilate the factory and mine sites. Due to the large size of the large fan, it often keeps running continuously during work, which will continuously generate noise pollution, especially around the air inlet and outlet of the ventilation duct, the noise pollution may be as high as 110 to 120 decibels, which greatly exceeds The International Organization for Standardization and my country's relevant industrial construction standards limit industrial noise to an upper limit index of 90 decibels, which greatl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F04D29/66
CPCF04D29/664F04D29/665
Inventor 杨向东
Owner CHONGQING FANCHENG TECH