CN104675753A - Flow guidance and noise reduction centrifugal fan - Google Patents
Flow guidance and noise reduction centrifugal fan Download PDFInfo
- Publication number
- CN104675753A CN104675753A CN201310626574.5A CN201310626574A CN104675753A CN 104675753 A CN104675753 A CN 104675753A CN 201310626574 A CN201310626574 A CN 201310626574A CN 104675753 A CN104675753 A CN 104675753A
- Authority
- CN
- China
- Prior art keywords
- casing
- microvave
- housing
- external box
- noise
- 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.)
- Pending
Links
Classifications
-
- 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
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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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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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
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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
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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
- F04D29/667—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
-
- 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
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
Abstract
The invention relates to the field of ventilation apparatus, and specifically relates to a flow guidance and noise reduction centrifugal fan. The flow guidance and noise reduction centrifugal fan comprises a housing, an impeller, an electric fan, a flow guidance hood, a damping foot, and an outer box. The outer box is covered outside the housing. The cross section of the housing is in a volute type. The impeller is arranged inside the housing. Bilateral sides of the housing are provided with trumpet-shaped air inlet and air outlet. One ends of the trumpet-shaped air inlet and air outlet with smaller diameters are all toward the interior of the housing. Bilateral sides of the outer box opposite to the air inlet and the air outlet of the housing are both provided with air inlet and air outlet. The flow guidance hood is arranged at the air inlet of the housing and fixed on the inner wall of the outer box. A damping and noise-reducing filler is filled between the outer box and the housing. The top of the outer box is provided with the electric motor. The electric motor is connected with a belt pulley on one end of a main shaft through a belt. The other end of the main shaft is connected with the impeller inside the housing. The damping foot is arranged at the bottom of the outer box. The flow guidance and noise reduction centrifugal fan is able to reduce the noise and vibration generated in the work of the fan very well, thereby reducing the damage to the work staff as well as extending the service life of the fan.
Description
Technical field
The present invention relates to field of ventilation equipment, be specifically related to a kind of water conservancy diversion noise-lowering centrifugal blower fan.
Background technique
The impeller of centrifugal blower has multiple blade along the axis of main shaft, and carry out rotor blade by drive motor, thus suck air vertically and radially deaeration, operationally can produce noise and vibration, noise can have a strong impact on the physical and mental health of staff, and vibration then can make shorten the working life of blower fan.
Summary of the invention
Technical problem to be solved by this invention overcomes the defect that above-mentioned prior art exists, provide a kind of can the water conservancy diversion noise-lowering centrifugal blower fan that abates the noise of slowing down vibration.
The present invention adopts following technological scheme: a kind of water conservancy diversion noise-lowering centrifugal blower fan, comprise casing, impeller, motor, air guide sleeve, damping lower margin and external box of microvave, described casing outer cup has described external box of microvave, casing cross section is volute type, described impeller is arranged in casing, casing bi-side are provided with trumpet-shaped inlets and putlets of ventilation, the little one end of horn-like inlets and putlets of ventilation bore is all towards casing internal, external box of microvave bi-side relative to casing inlets and putlets of ventilation are equipped with inlets and putlets of ventilation, described air guide sleeve is arranged on the air inlet of casing and is fixed on the inwall of external box of microvave, the packing of damping noise reduction is filled with between described external box of microvave and casing, external box of microvave top is provided with motor, motor is connected by the belt wheel of belt with main shaft one end, the main shaft the other end connects the impeller of casing internal, described damping lower margin is arranged on the bottom of external box of microvave.
Described air guide sleeve is divided into outer cover and Inner cover, and outer cover and Inner cover and form the air intake passage that cross section is zig-zag type, uniform noise reduction small through hole on Inner cover.
Described motor output shaft is equipped with belt pulley.
Belt hood is provided with outside described belt.
The packing of filling damping noise reduction between described external box of microvave and casing is super glass wool and expanded polyethylene foam.
The invention has the beneficial effects as follows: adopt such scheme, noise can well be reduced, slowing down vibration, the Inner cover of air guide sleeve and outer cover are combined into the horn-like intake grill that cross section is the air intake passage cooperation casing of zig-zag type, air can be made to flow has certain directivity to eliminate turbulent flow, and sound wave is transferred when propagating, acoustic wave energy is consumed, small through hole uniform on Inner cover turn increases the obstruction to Acoustic Wave Propagation, acoustic wave energy is decayed in the air again, reach noise reduction object, packing simultaneously between external box of microvave and casing not only has good absorption to noise, and can also absorbing vibration, the shockproof lower margin of bottom half is coordinated to slow down the vibrations produced in blower fan work greatly, protection blower fan also extends working life of blower fan.
Accompanying drawing explanation
Fig. 1 is Facad structure schematic diagram of the present invention;
Fig. 2 is side structure schematic diagram of the present invention;
Fig. 3 is the schematic cross-section of air guide sleeve 10 in Fig. 2.
In figure: 1 is external box of microvave, 2 is motor, and 3 is belt wheel, and 4 is protective housing, and 5 is belt, and 6 is impeller, 7 is shockproof lower margin, and 8 is casing, and 9 is main shaft, and 10 is air guide sleeve, and 10a is outer cover, 10b is inner cover, and 11 is small through hole, and 12 is packing, and 13 is intake grill, and 14 is exhaust outlet.
Embodiment
As shown in the figure, the present invention includes casing 8, impeller 6, motor 2, air guide sleeve 10, damping lower margin 7 and external box of microvave 1, casing 8 outside is covered with external box of microvave 1, casing 8 cross section is volute type, impeller 6 is arranged in casing 8, casing 8 bi-side are provided with trumpet-shaped inlets and putlets of ventilation, one end that horn-like inlets and putlets of ventilation bore is little is all inner towards casing 8, external box of microvave 1 is equipped with inlets and putlets of ventilation with the relative bi-side of casing 8 inlets and putlets of ventilation, air guide sleeve 10 is arranged on the air inlet of casing 8 and is fixed on the inwall of external box of microvave 1, external box of microvave 1 and casing 8 between be filled with the packing 12 of damping noise reduction, external box of microvave 1 top is provided with motor 2, motor 2 is connected with the belt wheel of main shaft 9 one end by belt 5, main shaft 9 the other end connects the impeller 6 of casing 8 inside, damping lower margin 7 is arranged on the bottom of external box of microvave 1.Motor 2 drives main shaft 9 to rotate by belt wheel 4 and belt 5, be arranged on the impeller 6 be connected with main shaft 9 in casing 8 to rotate simultaneously, fan shaft is discharged from the exhaust outlet 14 of radial direction to being sucked air by intake grill 13 again, intake grill is provided with air guide sleeve 10, it is that the passage of zig-zag type makes air have directivity to reduce turbulent flow when entering blower fan that the inner cover 10a of air guide sleeve 10 and outer cover 10b is combined into cross section, avoid the noise that turbulent flow brings, through the turnover of passage simultaneously when the noise that blower interior produces outwards is propagated, loss Acoustic Wave Propagation energy, small through hole 11 pairs of sound wave propagations that Inner covers on 10a simultaneously play inhibition, packing 12 between external box of microvave 1 and casing 8 can well absorb Noise and vibration, the noise that great reduction blower fan operationally produces, reduce noise to the harm of staff, the vibration that damping lower margin 7 bottom external box of microvave 1 can provide good buffer function to largely eliminate blower fan thus protection blower fan extend its working life.
The present invention is not limited to described embodiment, and those skilled in the art, not departing from spirit of the present invention namely openly in scope, still can do some and revise or change, therefore the scope that the scope of the present invention limits with claims is as the criterion.
Claims (5)
1. water conservancy diversion noise-lowering centrifugal blower fan, comprise casing, impeller, motor, air guide sleeve, damping lower margin and external box of microvave, it is characterized in that: described casing outer cup has described external box of microvave, casing cross section is volute type, described impeller is arranged in casing, casing bi-side are provided with trumpet-shaped inlets and putlets of ventilation, the little one end of horn-like inlets and putlets of ventilation bore is all towards casing internal, the bi-side that external box of microvave is relative with casing inlets and putlets of ventilation are provided with inlets and putlets of ventilation, described air guide sleeve is arranged on the air inlet of casing and is fixed on the inwall of external box of microvave, the packing of damping noise reduction is filled with between described external box of microvave and casing, external box of microvave top is provided with motor, motor is connected by the belt wheel of belt with main shaft one end, the main shaft the other end connects the impeller of casing internal, described damping lower margin is arranged on the bottom of external box of microvave.
2. water conservancy diversion noise-lowering centrifugal blower fan according to claim 1, is characterized in that: described air guide sleeve is divided into outer cover and Inner cover, and outer cover and Inner cover and form the air intake passage that cross section is zig-zag type, and Inner cover is evenly equipped with noise reduction small through hole.
3. water conservancy diversion noise-lowering centrifugal blower fan according to claim 1, is characterized in that: described motor output shaft is equipped with belt pulley.
4. water conservancy diversion noise-lowering centrifugal blower fan according to claim 1, is characterized in that: be provided with belt hood outside described belt.
5. water conservancy diversion noise-lowering centrifugal blower fan according to claim 1, is characterized in that: the packing of filling damping noise reduction between described external box of microvave and casing is super glass wool and expanded polyethylene foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310626574.5A CN104675753A (en) | 2013-11-29 | 2013-11-29 | Flow guidance and noise reduction centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310626574.5A CN104675753A (en) | 2013-11-29 | 2013-11-29 | Flow guidance and noise reduction centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104675753A true CN104675753A (en) | 2015-06-03 |
Family
ID=53311216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310626574.5A Pending CN104675753A (en) | 2013-11-29 | 2013-11-29 | Flow guidance and noise reduction centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104675753A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422488A (en) * | 2015-12-28 | 2016-03-23 | 烟台三立彩钢结构有限公司 | Ultra-silence high pressure air suction device |
| CN109469630A (en) * | 2018-10-23 | 2019-03-15 | 新密市昌源集团电力有限公司 | A kind of boiler feed pump of firm antidetonation |
| CN109838393A (en) * | 2019-03-12 | 2019-06-04 | 上海应达风机股份有限公司 | A kind of centrifugal blower |
-
2013
- 2013-11-29 CN CN201310626574.5A patent/CN104675753A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422488A (en) * | 2015-12-28 | 2016-03-23 | 烟台三立彩钢结构有限公司 | Ultra-silence high pressure air suction device |
| CN109469630A (en) * | 2018-10-23 | 2019-03-15 | 新密市昌源集团电力有限公司 | A kind of boiler feed pump of firm antidetonation |
| CN109838393A (en) * | 2019-03-12 | 2019-06-04 | 上海应达风机股份有限公司 | A kind of centrifugal blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |