CN217481562U - Silencer at air outlet of fan - Google Patents

Abstract

The utility model discloses a fan air outlet silencer, which relates to the technical field of fan noise reduction equipment and solves the problems that the noise reduction structure of the existing fan outlet has poor noise reduction and the pipeline, the motor and the like of the fan are exposed outside; the utility model discloses a periphery that goes out tuber pipe, air pipe and motor is provided with the setting of brick mixed structure wall body and air outlet department muffler, and the noise gets into in the amortization piece after absorbing through the abatvoix that punches a hole on the muffler amortization piece, and material through the different density of multilayer rubs layer upon layer, and the noise has just been eliminated, and simultaneously, brick mixed structure wall body blocks air pipe and motor noise outdiffusion, and noise reduction is better.

Description

Silencer at air outlet of fan

Technical Field

The utility model relates to a fan noise reduction equipment technical field, more specifically relate to fan air outlet sound insulation equipment technical field.

Background

The fan is common motor equipment in industrial production and plays an irreplaceable role. However, the noise generated by the fan during operation is as high as 85dB, which seriously affects the acoustic environment, and under the influence of such strong noise, the life and work of people are affected, so the noise control of the fan is very necessary.

Application number CN202121306164.9 discloses structure of making an uproar falls in centrifugal fan air outlet, including setting up out tuber pipe, the cover of centrifugal fan body one end put the pipe of making an uproar of falling at centrifugal fan body air-out outer wall, fall the pipe one end of making an uproar and flush with an air-out pipe one end, the other end is fixed with centrifugal fan body outer wall slope transition, it falls the piece of making an uproar to go out to be equipped with between tuber pipe and the fall the pipe, fall the piece of making an uproar including seting up a plurality of sound holes of inhaling on the tuber pipe wall, it has the cotton layer of sound of inhaling to fill between tuber pipe and the fall the pipe of making an uproar. The setting of this patent falls the pipe and is convenient for install and fall the piece of making an uproar, falls the pipe setting of making an uproar this moment and outside the air-out pipe for the enough noise reduction of wind energy that blows off from the air-out pipe, the staff work of being convenient for satisfies some occasions that have the requirement to sound simultaneously and uses.

The defect that above-mentioned patent exists is only adopting to attract the hole and inhale the sound cotton and inhale the sound, and it is not good to inhale the sound effect, and the pipe of making an uproar still has the windage simultaneously, and in addition, the pipeline of fan, motor etc. expose externally, also can produce the noise.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the above-mentioned structure of making an uproar of falling of current fan export and fall and make an uproar not good, and pipeline, the motor etc. of fan expose the problem outside, the utility model provides a fan air outlet muffler.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme: fan air outlet muffler, including the play tuber pipe of fan body one end, with go out air pipe continuous air pipe and motor, the periphery that goes out tuber pipe, air pipe and motor is provided with brick mixed structure wall body, the air outlet place that goes out the tuber pipe be provided with the through-hole that is used for installing the muffler on the brick mixed structure wall body, the muffler includes that the lower extreme is open-ended square frame, the vertical a plurality of amortization pieces that are provided with in the square frame, every amortization piece is first abatvoix, first glass silk cloth, the first glass fiber that punches a hole in proper order from a left side to the right side and inhales sound cotton, the second glass fiber inhales sound cotton, second glass silk cloth and the second abatvoix that punches a hole.

Among the technical scheme of this application, install the muffler on the through-hole, the muffler is located the upper portion of brick mixed structure wall body, the noise of air outlet loops through the first abatvoix that punches a hole, first glass silk cloth, first glass fiber inhales the sound cotton, second glass silk cloth and the abatvoix that punches a hole (or the second abatvoix that punches a hole, second glass silk cloth, second glass fiber inhales the sound cotton, first glass silk cloth and the first abatvoix that punches a hole), through the layer upon layer friction of the material of the different density of multilayer, the noise has just been eliminated, and simultaneously, brick mixed structure wall body blocks air pipe and motor noise outdiffusion. Through the air-out pipe, the periphery of air pipe and motor is provided with the setting of brick-concrete structure wall body and air outlet department muffler, the noise gets into in the amortization piece after absorbing through the abatvoix that punches a hole on the muffler amortization piece, material layer upon layer friction through the different density of multilayer, the noise has just been eliminated, and simultaneously, brick-concrete structure wall body blocks air pipe and motor noise outward diffusion, the noise reduction effect is better, it is not good to have solved the structure of making an uproar falls in above-mentioned current fan export, and the pipeline of fan, the motor etc. expose the problem externally.

Furthermore, the upper part and the lower part of each silencing piece are provided with a flow guide wedge. The arrangement of the diversion wedges enables air to flow in and out more smoothly, and in addition, normal air outlet and air return test are facilitated.

Furthermore, the square frame comprises a cubic frame surrounded by galvanized pipes and sound absorption and insulation plates positioned around the cubic frame.

Furthermore, the sound absorption and insulation board comprises a third punched sound absorption board, third glass fiber cloth, third glass fiber sound absorption cotton, glass fiber sound insulation cotton and a galvanized sheet from inside to outside. The cubic frame that the galvanized pipe encloses is stable firm, conveniently inhales the acoustic celotex board in its installation of periphery, inhales the inside of acoustic celotex board and is the third abatvoix that punches a hole, combines the first abatvoix and the second abatvoix that punches a hole of amortization piece both sides, makes the noise get into the amortization piece respectively and inhale the acoustic celotex board in, through the multilayer different density's material layer upon layer friction noise elimination, noise reduction effect is good.

Furthermore, a steel structure supporting frame is arranged in the through hole, and steel supports are welded at the four corners and the long edge center of the silencer and are arranged on the steel structure supporting frame. The support is stable and firm, and the installation is convenient.

Furthermore, the silencer is connected with an air outlet of the air outlet pipe through a flange. Angle steel is arranged around the silencer and connected with a flange on the air outlet pipe.

Furthermore, the silencer is connected with the brick-concrete structure wall through ox horn supports. The ox horn support is firmer, and the wind resistance effect is better.

Furthermore, rings are arranged on two sides of the top of the silencer. The setting of rings makes things convenient for the later stage test of returning wind.

The beneficial effects of the utility model are as follows:

1. the brick-concrete structure wall body and the silencer at the air outlet are arranged on the peripheries of the air outlet pipe, the air pipeline and the motor, noise is absorbed by the punching acoustic board on the silencer silencing sheet and then enters the silencing sheet, and the noise is eliminated through layer-by-layer friction of multiple layers of materials with different densities;

2. the arrangement of the diversion wedges enables air to flow in and out more smoothly, and in addition, normal air outlet and return test are facilitated;

3. the cubic frame surrounded by the galvanized pipe is stable and firm, the sound absorption and insulation boards are convenient to mount around the cubic frame, the third punched sound absorption board is arranged inside the sound absorption and insulation board, and the first punched sound absorption board and the second punched sound absorption board on two sides of the silencing sheet are combined to enable noise to respectively enter the silencing sheet and the sound absorption and insulation board, and the noise is eliminated through multi-layer friction of materials with different densities layer by layer, so that the noise reduction effect is good;

4. angle steel is arranged around the silencer and connected with a flange on the air outlet pipe, so that the silencer is convenient to mount, dismount and overhaul;

5. the ox horn support is firmer, and the wind resistance effect is better;

6. the setting of rings makes things convenient for the later stage test of returning wind.

Drawings

FIG. 1 is a schematic structural view of a silencer at an air outlet of a fan;

FIG. 2 is a top view of a fan outlet silencer;

FIG. 3 is an isometric view of a muffler;

FIG. 4 is a detail view of the sound damping sheet in material layering;

FIG. 5 is a detail view of the sound absorbing baffles in layers;

fig. 6 is a view of the muffler and horn positions.

Reference numerals: 1-silencer, 2-brick-concrete structure wall, 3-ventilating duct, 4-motor, 5-air outlet pipe, 6-oxhorn, 7-silencing sheet, 8-diversion wedge, 9-second punched sound-absorbing plate, 10-second glass fiber cloth, 11-second glass fiber sound-absorbing cotton, 12-first glass fiber sound-absorbing cotton, 13-first glass fiber cloth, 14-first punched sound-absorbing plate, 15-galvanized plate, 16-glass fiber sound-insulating cotton, 17-third glass fiber sound-absorbing cotton, 18-third glass fiber cloth, 19-third punched sound-absorbing plate and 20-angle steel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

As shown in fig. 1 to 6, this embodiment provides fan air outlet muffler 1, including the play tuber pipe 5 of fan body one end, with air pipe 5 continuous air pipe 3 and motor 4 go out, the periphery that goes out tuber pipe 5, air pipe 3 and motor 4 is provided with brick mixed structure wall body 2, the air outlet place of play tuber pipe 5 be provided with the through-hole that is used for installing muffler 1 on the brick mixed structure wall body 2, muffler 1 includes that the upper and lower extreme is open-ended square frame, the vertical a plurality of noise damping sheets 7 that are provided with in the square frame, every noise damping sheet 7 is the first abatvoix 14 that punches a hole, first glass silk cloth 13, first glass fiber inhale sound cotton 12, second glass fiber and inhale sound cotton 11, second glass silk cloth 10 and the second abatvoix 9 that punches a hole from a left side to the right side in proper order.

In the technical scheme of this application, install muffler 1 on the through-hole, muffler 1 is located the upper portion of brick-concrete structure wall body 2, the noise of air outlet loops through first abatvoix 14 that punches a hole, first glass silk cloth 13, first glass fiber inhales sound cotton 12, second glass fiber inhales sound cotton 11, second glass silk cloth 10 and second abatvoix 9 that punches a hole (or second abatvoix 9 that punches a hole, second glass silk cloth 10, second glass fiber inhales sound cotton 11, first glass fiber inhales sound cotton 12, first glass silk cloth 13 and first abatvoix 14 that punches a hole), through the layer upon layer friction of the different density material of multilayer, the noise has just been eliminated, and simultaneously, brick-concrete structure wall body 2 blocks air pipe 3 and the outward diffusion of motor 4 noise. Through going out tuber pipe 5, air pipe 3 and motor 4's periphery is provided with the setting of brick mixed structure wall body 2 and air outlet department muffler 1, the noise gets into in muffler 7 after absorbing through the punching a hole abatvoix on muffler 1 muffler 7, material layer upon layer friction through the different density of multilayer, the noise has just been eliminated, and simultaneously, brick mixed structure wall body 2 blocks air pipe 3 and motor 4 noise outward diffusion, the noise reduction effect is better, it falls not well to have solved the above-mentioned structure of making an uproar that falls of current fan export, and the pipeline of fan, motor 4 etc. expose the problem externally.

Example 2

As shown in fig. 3 and 4, according to embodiment 1, the upper part and the lower part of each silencing piece 7 are provided with flow guiding wedges 8. The arrangement of the diversion wedges 8 enables air to flow in and out more smoothly, and in addition, normal air outlet and air return test are facilitated.

Example 3

As shown in fig. 3 and 5, based on example 1, the square frame comprises a cubic frame surrounded by galvanized pipes and sound absorbing and insulating boards located around the cubic frame, and the sound absorbing and insulating boards comprise a third punched sound absorbing board 19, a third glass fiber cloth 18, a third glass fiber sound absorbing cotton 17, a glass fiber sound insulating cotton 16 and a galvanized plate 15 from inside to outside. The cubic frame that the galvanized pipe encloses is stable firm, conveniently inhales the acoustic celotex board at its periphery installation, inhales the inside of acoustic celotex board and is the third abatvoix 19 that punches a hole, combines the first abatvoix 14 that punches a hole and the second abatvoix 9 of amortization piece 7 both sides, makes the noise get into the amortization piece 7 respectively and inhale the acoustic celotex board in, through the multilayer different density material layer upon layer friction noise elimination, noise reduction effect is good.

Example 4

As shown in fig. 1,2 and 6, based on embodiment 1, a steel structure support frame is arranged in the through hole, steel supports are welded at the centers of four corners and long sides of the silencer 1 and are arranged on the steel structure support frame, the silencer 1 is connected with an air outlet of the air outlet pipe 5 through a flange, and the silencer 1 is connected with the brick-concrete structure wall 2 through a horn 6 support. Angle steel 20 is arranged around the silencer 1, and the angle steel 20 is connected with a flange on the air outlet pipe 5; the ox horn 6 is supported more firmly, and the wind-resistant effect is better.

Example 5

As shown in fig. 1, according to embodiment 1, hanging rings are provided on both sides of the top of the muffler 1. The setting of rings makes things convenient for the later stage test of returning wind.

The above embodiment takes two parallel fans as an example, and may also be one fan or a plurality of parallel fans.

Claims (8)

1. A silencer (1) at the air outlet of the fan, which comprises an air outlet pipe (5) at one end of a fan body, a ventilation pipeline (3) and a motor (4) which are connected with the air outlet pipe (5), it is characterized in that the peripheries of the air outlet pipe (5), the ventilating duct (3) and the motor (4) are provided with brick-concrete structure walls (2), a through hole for installing a silencer (1) is arranged on the brick-concrete structure wall body (2) where the air outlet of the air outlet pipe (5) is positioned, muffler (1) is including going up the lower extreme and being open-ended square frame, vertically in the square frame be provided with a plurality of noise damping pieces (7), every noise damping piece (7) are first abatvoix (14), first glass silk cloth (13), first glass fiber in proper order from a left side to the right side and inhale sound cotton (12), second glass fiber inhales sound cotton (11), second glass silk cloth (10) and second abatvoix (9) that punches a hole.

2. The fan air outlet silencer (1) of claim 1, wherein the upper and lower parts of each silencing sheet (7) are provided with a flow guiding wedge (8).

3. The fan outlet silencer (1) according to claim 1, wherein the square frame comprises a square frame surrounded by galvanized pipes and sound absorbing and insulating plates located around the square frame.

4. The fan air outlet silencer (1) of claim 3, wherein the sound absorbing and insulating plate comprises a third punched sound absorbing plate (19), a third glass fiber cloth (18), a third glass fiber sound absorbing cotton (17), a glass fiber sound absorbing cotton (16) and a galvanized plate (15) from inside to outside.

5. The silencer (1) at the air outlet of the fan as claimed in claim 1, wherein a steel structure support frame is arranged in the through hole, and steel supports are welded at the centers of four corners and long sides of the silencer (1) and are arranged on the steel structure support frame.

6. The blower air outlet silencer (1) of claim 5, wherein the silencer (1) is connected to the air outlet of the air outlet pipe (5) by a flange.

7. The air outlet silencer (1) of the fan as claimed in claim 1 or 6, wherein the silencer (1) is connected to the wall (2) of the brick-concrete structure by means of a horn (6).

8. Blower outlet silencer (1) according to any of claims 1-7, characterised in that the top of the silencer (1) is provided with lifting rings on both sides.

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