CN202348788U - Noise reducing device of fan - Google Patents

Noise reducing device of fan Download PDF

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Publication number
CN202348788U
CN202348788U CN2011204601979U CN201120460197U CN202348788U CN 202348788 U CN202348788 U CN 202348788U CN 2011204601979 U CN2011204601979 U CN 2011204601979U CN 201120460197 U CN201120460197 U CN 201120460197U CN 202348788 U CN202348788 U CN 202348788U
Authority
CN
China
Prior art keywords
noise
noise reducing
blower
absorbing material
barrel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2011204601979U
Other languages
Chinese (zh)
Inventor
宁守庆
张黎林
郭宪杰
梁亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Tobacco Henan Industrial Co Ltd
Original Assignee
China Tobacco Henan Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Tobacco Henan Industrial Co Ltd filed Critical China Tobacco Henan Industrial Co Ltd
Priority to CN2011204601979U priority Critical patent/CN202348788U/en
Application granted granted Critical
Publication of CN202348788U publication Critical patent/CN202348788U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a noise reducing device of a fan. A noise reducing barrel is arranged at the position of an air inlet of the fan in a butting way; noise reducing caps are covered at intervals outside the noise reducing barrel; noise reducing boxes are covered at intervals outside the noise reducing caps; noise absorbing material layers are arranged on the inner walls of the noise reducing barrel, the noise reducing caps and the noise reducing boxes; the thickness of the noise absorbing material layer is 60mm; and a conical opening is arranged at the outer end of the noise reducing barrel. The noise reducing device is simple in structure and practical in function; the original section as an entry of air stream is changed into S-shaped direction, so that the noise can be fully absorbed by the noise absorbing materials, and the noise hazard is greatly reduced; and a lateral air intake way is adopted, so that heat produced by a motor is fully brought away by high-speed air stream, and the heat-dissipation problem of the motor is solved at the same time.

Description

A kind of blower denoising device
Technical field
The utility model relates to a kind of blower denoising device.
Background technique
All can there be boiler the boiler room between kinetic energy vehicle at present; Blower noise is bigger during boiler operatiopn; The warp actual measurement on average about 102 decibels, not only has a strong impact on the daily life of surrounding resident, and in such environment, works for a long time and can work the mischief to the healthy of worker.
The model utility content
The utility model provides a kind of blower denoising device, and noise reduction is better, has solved the heat dissipation problem of blower motor simultaneously.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme: a kind of blower denoising device, and to being equipped with hush pipe, the hush pipe outside is covered with the noise reduction cap at interval at the blower inlet place, and the outside of noise reduction cap is covered with Sound Attenuator at interval; The inwall of hush pipe, noise reduction cap, Sound Attenuator is provided with sound-absorbing material layer.
The thickness of sound-absorbing material layer is 60mm.
The hush pipe outer end is provided with taper mouth.
Sound Attenuator is of a size of 2400mm * 2000mm * 2000mm, and hush pipe is of a size of 700mm * 700mm * 500mm, and the noise reduction cap is of a size of 1100mm * 1100mm * 300mm.
The utility model is simple in structure, function is practical, and through setting up hush pipe, noise reduction cap, Sound Attenuator, the boiler blower noise is reduced to 78 decibels by original about 102 decibels, can be reduced to about 45 decibels near the residential building, greatly reduces noise hazard.
In the utility model, air-flow is got into by original tangent plane and changes the entering of serpentine direction into, and noise can be absorbed by sound absorbing material fully; Adopt side air intake mode, make high velocity air fully take away the heat that motor self produces, also solve the motor radiating problem simultaneously well.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 1 is the A-A sectional view of Fig. 1.
Embodiment
Embodiment: like Fig. 1, shown in Figure 2, a kind of blower denoising device, to being equipped with hush pipe 5, hush pipe 5 outer ends are provided with taper mouth at blower 1 intake grill place, and hush pipe 5 outsides are covered with noise reduction cap 4 at interval, and the outside of noise reduction cap 4 is covered with Sound Attenuator 3 at interval; The inwall of hush pipe 5, noise reduction cap 4, Sound Attenuator 5 is provided with sound-absorbing material layer 6, and sound-absorbing material layer 6 can be fixed with steel wire.The thickness of sound-absorbing material layer 6 is 60mm, and sound-absorbing material layer 6 can adopt some sound absorbing materials commonly used to process, for example acoustical cotton.In the present embodiment, Sound Attenuator 3 is of a size of 2400mm * 2000mm * 2000mm, and hush pipe 5 is of a size of 700mm * 700mm * 500mm, and noise reduction cap 4 is of a size of 1100mm * 1100mm * 300mm.
Judge noise owing to air motion causes through inspection, this noise like fundamentally is difficult to eliminate, and can only reduce its injury to people's ear through blocking-up.Therefore the utility model utilizes sound diffusion principle, on blower, installs hush pipe, noise reduction cap, Sound Attenuator additional, through after the multistage noise reduction process treating, can reach the man-made noise standard.
When using, air-flow is got into by original tangent plane and changes 2 entering of serpentine direction into, and noise can be absorbed by sound absorbing material fully; Owing to adopt side air intake mode, make high velocity air fully take away the heat that motor self produces, also solve the motor radiating problem simultaneously well.

Claims (4)

1. blower denoising device is characterized in that: to being equipped with hush pipe, the hush pipe outside is covered with the noise reduction cap at interval at the blower inlet place, and the outside of noise reduction cap is covered with Sound Attenuator at interval; The inwall of hush pipe, noise reduction cap, Sound Attenuator is provided with sound-absorbing material layer.
2. blower denoising device according to claim 1 is characterized in that: the thickness of sound-absorbing material layer is 60mm.
3. blower denoising device according to claim 1 and 2 is characterized in that: the hush pipe outer end is provided with taper mouth.
4. blower denoising device according to claim 3 is characterized in that: Sound Attenuator is of a size of 2400mm * 2000mm * 2000mm, and hush pipe is of a size of 700mm * 700mm * 500mm, and the noise reduction cap is of a size of 1100mm * 1100mm * 300mm.
CN2011204601979U 2011-11-18 2011-11-18 Noise reducing device of fan Expired - Lifetime CN202348788U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204601979U CN202348788U (en) 2011-11-18 2011-11-18 Noise reducing device of fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204601979U CN202348788U (en) 2011-11-18 2011-11-18 Noise reducing device of fan

Publications (1)

Publication Number Publication Date
CN202348788U true CN202348788U (en) 2012-07-25

Family

ID=46537795

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204601979U Expired - Lifetime CN202348788U (en) 2011-11-18 2011-11-18 Noise reducing device of fan

Country Status (1)

Country Link
CN (1) CN202348788U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103925248A (en) * 2014-05-04 2014-07-16 苏州喜福瑞农业科技有限公司 Siphon type straight air exhaust sound receiving box
CN105864108A (en) * 2015-01-22 2016-08-17 中国科学院声学研究所 Silencer for draught fan air inlet
CN106015110A (en) * 2016-05-10 2016-10-12 中国能源建设集团广东省电力设计研究院有限公司 Noise absorption and isolation device and silencing method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103925248A (en) * 2014-05-04 2014-07-16 苏州喜福瑞农业科技有限公司 Siphon type straight air exhaust sound receiving box
CN105864108A (en) * 2015-01-22 2016-08-17 中国科学院声学研究所 Silencer for draught fan air inlet
CN105864108B (en) * 2015-01-22 2018-08-07 中国科学院声学研究所 A kind of air inlet silencer
CN106015110A (en) * 2016-05-10 2016-10-12 中国能源建设集团广东省电力设计研究院有限公司 Noise absorption and isolation device and silencing method thereof

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP02 Change in the address of a patent holder

Address after: 450000 Yulin South Road, Henan, Zheng Dong, No. 16 South Road, Zhengzhou

Patentee after: China Tobacco Henan Industrial Co., Ltd.

Address before: 450000 Zhengzhou agricultural road, Henan, No. 29

Patentee before: China Tobacco Henan Industrial Co., Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20120725