CN107013494B - Noise-reducing centrifugal fan - Google Patents
Noise-reducing centrifugal fan Download PDFInfo
- Publication number
- CN107013494B CN107013494B CN201710329860.3A CN201710329860A CN107013494B CN 107013494 B CN107013494 B CN 107013494B CN 201710329860 A CN201710329860 A CN 201710329860A CN 107013494 B CN107013494 B CN 107013494B
- Authority
- CN
- China
- Prior art keywords
- vortex
- plate
- casing
- air inlet
- fan
- 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.)
- Active
Links
- 239000011358 absorbing material Substances 0.000 claims abstract description 11
- 239000011491 glass wool Substances 0.000 claims abstract description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application discloses centrifugal fan, including the motor, with the casing that the motor links to each other, install the air intake board on the casing, the air intake board not with the one end that the casing is connected with the circular arc board, the air intake board with be connected with the vortex-preventing ring on the circular arc board, the vortex-preventing ring with the air intake board with form inclosed cavity between the circular arc board, the cavity intussuseption is filled with sound absorbing material. According to the technical scheme provided by the embodiment of the application, through increasing the vortex-preventing ring on the centrifugal fan, large-scale vortex is effectively broken, aerodynamic characteristics in the shell can be obviously improved, fan efficiency is improved, fan noise is reduced, and the anti-vortex ring is internally filled with glass wool to form a resistive muffler, so that sound wave energy is absorbed, and fan noise is further effectively reduced.
Description
Technical Field
The present disclosure relates generally to the field of fans, and more particularly to noise reduction centrifugal fans.
Background
The centrifugal fan converts mechanical energy of rotation of a fan impeller into pressure energy and kinetic energy of gas, the gas is conveyed out, the gas axially enters air along a streamline air inlet of the fan, air energy is generated by rotation of the impeller, the gas is radially output along a spiral shell, and the gas is sent out from an air outlet of the shell.
Aerodynamic noise of a fan mainly consists of broadband noise and discrete noise, and aerodynamic characteristics in a volute are closely related to the broadband noise.
As shown in fig. 1, the disadvantage of this fan is that: the space between the casing front side plate and the impeller front cover plate is larger, larger vortex is easy to form, the fan efficiency is lower, and the noise is larger.
Disclosure of Invention
In view of the above-described drawbacks or shortcomings of the prior art, it is desirable to provide a noise reducing centrifugal fan.
In one aspect, a centrifugal fan is provided, comprising a motor and a casing connected with the motor, wherein an air inlet plate is arranged on the casing, one end of the air inlet plate, which is not connected with the casing, is connected with an arc plate,
the air inlet plate and the circular arc plate are connected with anti-vortex rings, a closed cavity is formed between the anti-vortex rings and the air inlet plate and between the anti-vortex rings and the circular arc plate, and sound absorbing materials are filled in the cavity.
According to the technical scheme provided by the embodiment of the application, through increasing the vortex-preventing ring on the centrifugal fan, large-scale vortex is effectively broken, aerodynamic characteristics in the shell can be obviously improved, fan efficiency is improved, fan noise is reduced, and the anti-vortex ring is internally filled with glass wool to form a resistive muffler, so that sound wave energy is absorbed, and fan noise is further effectively reduced.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
FIG. 1 is a schematic diagram of a centrifugal fan in the prior art;
fig. 2 is a schematic diagram of a centrifugal fan structure in the present invention.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 2, the invention provides a centrifugal fan, which comprises a motor 2, a casing 1 connected with the motor 2, an air inlet plate 6 arranged on the casing 1, an arc plate connected with one end of the air inlet plate 6 which is not connected with the casing,
the air inlet plate 6 and the circular arc plate are connected with the vortex-preventing ring 3, a closed cavity is formed between the vortex-preventing ring 3 and the air inlet plate 6 and between the circular arc plate, and the cavity is filled with the sound absorbing material 4.
The centrifugal fan provided by the embodiment is added with the vortex-preventing ring, so that large-scale vortex is effectively broken, aerodynamic characteristics in a shell can be obviously improved, fan efficiency is improved, fan noise is reduced, and sound-absorbing materials are filled in the vortex-preventing ring to form a resistive muffler for absorbing and consuming sound wave energy, so that fan noise is further effectively reduced
Further, the sound absorbing material is superfine glass wool.
In the embodiment of the application, the superfine glass wool is used as the sound absorbing material, so that the noise of the fan is effectively reduced.
Further, the vortex-preventing ring comprises a first surface and a second surface, a right angle is formed between the first surface and the second surface, the first surface is welded with the air inlet plate, and the second surface is welded with the arc plate.
The vortex-preventing ring comprises a first surface and a second surface, a cavity is formed between the first surface and the air inlet plate and between the first surface and the arc plate in a stroke mode, sound absorbing materials are filled in the cavity to reduce fan noise, the two surfaces of the vortex-preventing ring are welded to the air inlet plate and the arc plate respectively, and the strength of the fan is improved.
Further, through holes are uniformly formed in the first face and the second face, and the diameter of each through hole is not larger than 1mm.
Through holes are formed in the vortex-preventing ring, the effect of the structure on noise reduction of the fan is improved, the diameter of the through holes in the vortex-preventing ring is required to be designed to be smaller, and the purpose of noise reduction of the centrifugal fan is effectively achieved.
Further, the thickness of the first surface and the second surface is 1mm.
The vortex-preventing ring is preferably 1mm thick, and the noise of the fan is effectively reduced by filling the sound-absorbing material under the condition of ensuring the strength of the centrifugal fan product.
Further, an impeller 5 is mounted on the motor output shaft, the impeller comprises a front cover plate and a rear cover plate, and blades are mounted between the front cover plate and the rear cover plate.
The utility model discloses still be equipped with the impeller in this application, install the impeller on motor output shaft and guarantee that can drive the impeller and rotate.
Further, the air inlet plate is fixedly connected to the casing through bolts. The air inlet plate 6 and the arc plate in the embodiment can be of an integrated structure, so that the air inlet plate and the arc plate are more convenient in the production and manufacturing process, or are manufactured and welded respectively; the arc plate protrudes in a direction different from the vortex-preventing ring, so that the smoothness of air flow of the fan in the working process is ensured.
Further, the shell rear side plate is fixed on the motor mounting plate. The air inlet is fixed through bolts, so that the disassembly and the filling of the sound absorbing material can be performed.
The centrifugal fan in this application becomes a resistive muffler through at the inside glass wool that fills of vortex ring, absorbs and consumes the sound wave energy, effectively reduces fan noise.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (1)
1. The centrifugal fan comprises a motor and a casing connected with the motor, and is characterized in that an air inlet plate is arranged on the casing, one end of the air inlet plate, which is not connected with the casing, is connected with an arc plate, the air inlet plate is fixedly connected with the casing through bolts, a rear side plate of the casing is fixed on the motor mounting plate,
the air inlet plate and the circular arc plate are connected with anti-vortex rings, a closed cavity is formed between the anti-vortex rings and the air inlet plate and between the anti-vortex rings and the circular arc plate, sound absorbing materials are filled in the cavity, and the sound absorbing materials are superfine glass wool;
the vortex-preventing ring comprises a first surface and a second surface, a right angle is formed between the first surface and the second surface, the first surface is welded with the air inlet plate, the second surface is welded with the circular arc plate, through holes are uniformly formed in the first surface and the second surface, the diameter of each through hole is not more than lmm, the thicknesses of the first surface and the second surface are lmm,
the motor output shaft is provided with an impeller, the impeller comprises a front cover plate and a rear cover plate, and blades are arranged between the front cover plate and the rear cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710329860.3A CN107013494B (en) | 2017-05-11 | 2017-05-11 | Noise-reducing centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710329860.3A CN107013494B (en) | 2017-05-11 | 2017-05-11 | Noise-reducing centrifugal fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107013494A CN107013494A (en) | 2017-08-04 |
| CN107013494B true CN107013494B (en) | 2023-12-26 |
Family
ID=59450047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710329860.3A Active CN107013494B (en) | 2017-05-11 | 2017-05-11 | Noise-reducing centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107013494B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387431A (en) * | 2017-08-23 | 2017-11-24 | 重庆美的通用制冷设备有限公司 | Centrifuge compressor |
| CN107559223B (en) * | 2017-10-23 | 2024-03-19 | 上海瑞晨环保科技股份有限公司 | High-efficient centrifugal fan of noise elimination |
| CN107654398B (en) * | 2017-10-23 | 2024-03-19 | 上海瑞晨环保科技股份有限公司 | Noise elimination high-speed centrifugal fan |
| CN108412800A (en) * | 2018-05-25 | 2018-08-17 | 绍兴智新机电科技有限公司 | A kind of extraordinary wind turbine of explosion-proof noise elimination |
| CN108716475A (en) * | 2018-05-29 | 2018-10-30 | 常山卫邦风机有限公司 | A kind of energy-efficient centrifugal blower |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2156434Y (en) * | 1992-12-02 | 1994-02-16 | 刘明华 | Low-noise centrifugal ventilation machine |
| CN101535656A (en) * | 2006-11-02 | 2009-09-16 | 松下电器产业株式会社 | Centrifugal fan |
| CN202579333U (en) * | 2012-04-27 | 2012-12-05 | 浙江兴益风机电器有限公司 | Low noise air conditioner fan |
| CN203463361U (en) * | 2013-07-18 | 2014-03-05 | 上海谷科通风设备有限公司 | Meridian fan |
| CN205401255U (en) * | 2016-02-29 | 2016-07-27 | 宁波方太厨具有限公司 | A collector of making an uproar falls for centrifugal fan among range hood |
| CN206708096U (en) * | 2017-05-11 | 2017-12-05 | 南通升科节能技术有限公司 | Noise-lowering centrifugal blower fan |
-
2017
- 2017-05-11 CN CN201710329860.3A patent/CN107013494B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2156434Y (en) * | 1992-12-02 | 1994-02-16 | 刘明华 | Low-noise centrifugal ventilation machine |
| CN101535656A (en) * | 2006-11-02 | 2009-09-16 | 松下电器产业株式会社 | Centrifugal fan |
| CN202579333U (en) * | 2012-04-27 | 2012-12-05 | 浙江兴益风机电器有限公司 | Low noise air conditioner fan |
| CN203463361U (en) * | 2013-07-18 | 2014-03-05 | 上海谷科通风设备有限公司 | Meridian fan |
| CN205401255U (en) * | 2016-02-29 | 2016-07-27 | 宁波方太厨具有限公司 | A collector of making an uproar falls for centrifugal fan among range hood |
| CN206708096U (en) * | 2017-05-11 | 2017-12-05 | 南通升科节能技术有限公司 | Noise-lowering centrifugal blower fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107013494A (en) | 2017-08-04 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Room 1606, Building 43, Zhongnan Century City, Chongchuan District, Nantong City, Jiangsu Province, 226000 Applicant after: Jiangsu Shengke Energy Saving Technology Co.,Ltd. Address before: Room 706 and 707, Building 3, Nantong Science and Technology Park, No. 58 Chongchuan Road, Chongchuan District, Nantong City, Jiangsu Province, 226000 Applicant before: NANTONG SHENGKE ENERGY SAVING TECHNOLOGY CO.,LTD. |
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| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |