CN206708096U - Noise-lowering centrifugal blower fan - Google Patents
Noise-lowering centrifugal blower fan Download PDFInfo
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- CN206708096U CN206708096U CN201720524966.4U CN201720524966U CN206708096U CN 206708096 U CN206708096 U CN 206708096U CN 201720524966 U CN201720524966 U CN 201720524966U CN 206708096 U CN206708096 U CN 206708096U
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- centrifugal blower
- face
- air intake
- casing
- vortex ring
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Abstract
This application discloses a kind of centrifugal blower, more particularly to noise-lowering centrifugal blower fan, including motor, the casing being connected with the motor, air intake oralia is installed, one end that the air intake oralia is not connected with the casing is connected with arc plate, and the air intake oralia on the arc plate with being connected with anti-vortex ring on the casing, closed cavity is formed between the anti-vortex ring and the air intake oralia and the arc plate, sound-absorbing material is filled with the cavity.The technical scheme provided according to the embodiment of the present application, by increasing anti-vortex ring on centrifugal blower, effectively broken large eddies, air dynamic behaviour in casing can be obviously improved, improves fan efficiency, reduces fan noise, and pass through the filling glass cotton inside anti-vortex ring, as a dissipative muffler, consumption acoustic wave energy is absorbed, further effectively reduces fan noise.
Description
Technical field
The disclosure relates generally to blower fan field, more particularly to noise-lowering centrifugal blower fan.
Background technology
Centrifugal blower is the pressure energy and kinetic energy that gas is converted to using the mechanical energy of draught fan impeller rotation, and gas is defeated
See off, gas is rotated through impeller and produces air energy along the streamlined air inlet air inlet through hollow shaft of blower fan, along screw type housing by gas
Body radially exports, then is sent out from shell air outlet.
The air power noise of blower fan is mainly made up of broadband noise and discrete noise, and the aerodynamics in spiral case is special
Property then has close ties with broadband noise.
As shown in figure 1, the defects of this blower fan, is：Space between casing front side board and front shroud of impeller is larger, pole
Larger vortex is easily formed, causes fan efficiency relatively low, noise is larger.
Utility model content
In view of drawbacks described above of the prior art or deficiency, it is expected to provide a kind of noise-lowering centrifugal blower fan.
On the one hand, there is provided a kind of centrifugal blower, including motor, the casing being connected with the motor, install on the casing
There is air intake oralia, one end that the air intake oralia is not connected with the casing is connected with arc plate,
It is connected with anti-vortex ring on the air intake oralia and the arc plate, the anti-vortex ring and the air intake oralia and described
Closed cavity is formed between arc plate, sound-absorbing material is filled with the cavity.
The technical scheme provided according to the embodiment of the present application is effectively broken big by increasing anti-vortex ring on centrifugal blower
Yardstick vortex, can be obviously improved air dynamic behaviour in casing, improve fan efficiency, reduce fan noise, and by
Filling glass cotton inside anti-vortex ring, turn into a dissipative muffler, absorb consumption acoustic wave energy, further effectively reduce blower fan and make an uproar
Sound.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the application's is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is centrifugal fan structure schematic diagram in the prior art；
Fig. 2 is centrifugal fan structure schematic diagram in the utility model.
Embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
It is easy to describe, the part related to invention is illustrate only in accompanying drawing.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 2 is refer to, the present invention provides a kind of centrifugal blower, including motor 2, the casing 1 being connected with the motor 2, institute
To state and air intake oralia 6 is installed on casing 1, one end that the air intake oralia 6 is not connected with the casing is connected with arc plate,
Be connected with anti-vortex ring 3 on the air intake oralia 6 and the arc plate, the anti-vortex ring 3 and the air intake oralia 6 and
Closed cavity is formed between the arc plate, sound-absorbing material 4 is filled with the cavity.
The centrifugal blower that the present embodiment provides adds anti-vortex ring, effectively broken large eddies, can be obviously improved casing
Interior air dynamic behaviour, fan efficiency is improved, reduce fan noise, and sound-absorbing material is filled in anti-vortex ring, turn into one
Dissipative muffler, consumption acoustic wave energy is absorbed, further effectively reduces fan noise
Further, the sound-absorbing material is super glass wool.
Fan noise is effectively reduced as sound-absorbing material using super glass wool in the embodiment of the present application.
Further, the anti-vortex ring includes the first face and the second face, is formed between first face and second face
One right angle, first face and the air inlet plate weld, second face and the circular arc plate weld.
Anti-vortex ring includes the cavity of stroke one between the first face and the second face, with air intake oralia and arc plate, is filled out in cavity
Sound-absorbing material is filled to reduce fan noise, and two faces of anti-vortex ring increase wind respectively at air intake oralia and circular arc plate weld
The intensity of machine.
Further, with being uniformly provided with through hole on second face, the through-hole diameter is not more than 1mm in first face.
Through hole is set on anti-vortex ring, increases the effect that the structure reduces to fan noise, and the through hole on anti-vortex ring is straight
Footpath needs to design smaller, effectively realizes the purpose of centrifugal blower noise reduction.
Further, first face and second face thickness are 1mm.
Anti-vortex ring design is preferably 1mm thickness, there is filling sound-absorbing material under conditions of ensureing centrifugal blower product strength
Effect reduces the noise of blower fan.
Further, impeller 5 is installed, the impeller includes front shroud and back shroud, described on the motor output shaft
Blade is installed between front shroud and the back shroud.
Impeller is additionally provided with the application, by impeller be arranged on motor output shaft on ensure motor can impeller turned
It is dynamic.
Further, the air intake oralia is bolted to connection on the housing.Air inlet in the present embodiment
Plate 6 and arc plate can be formed in one structure, more convenient during the manufacturing, or manufacture is welded respectively；And
The arc plate is raised to the direction different from anti-vortex ring, ensure that the unimpeded of blower fan air-flow in the course of the work.
Further, the casing back side panel is fixed on the motor mounting plate.Air inlet is bolted can
Carried out dismounting and the filling of sound-absorbing material.
Centrifugal blower in the application turns into a dissipative muffler, absorption disappears by the filling glass cotton inside anti-vortex ring
Acoustic wave energy is consumed, effectively reduces fan noise.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology that the particular combination of above-mentioned technical characteristic forms
Scheme, while should also cover in the case where not departing from the inventive concept, carried out by above-mentioned technical characteristic or its equivalent feature
The other technical schemes for being combined and being formed.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of energy is replaced mutually and formed.
Claims (8)
1. a kind of centrifugal blower, including motor, the casing being connected with the motor, it is characterised in that be provided with the casing
Air intake oralia, one end that the air intake oralia is not connected with the casing are connected with arc plate,
The air intake oralia is with being connected with anti-vortex ring, the anti-vortex ring and the air intake oralia and the circular arc on the arc plate
Closed cavity is formed between plate, sound-absorbing material is filled with the cavity.
2. centrifugal blower according to claim 1, it is characterised in that the sound-absorbing material is super glass wool.
3. centrifugal blower according to claim 1 or 2, it is characterised in that the anti-vortex ring includes the first face and the second face,
A right angle, first face and the air inlet plate weld, second face are formed between first face and second face
With the circular arc plate weld.
4. centrifugal blower according to claim 3, it is characterised in that first face on second face with being uniformly provided with
Through hole, the through-hole diameter are not more than 1mm.
5. centrifugal blower according to claim 3, it is characterised in that first face and second face thickness are 1mm.
6. centrifugal blower according to claim 1 or 2, it is characterised in that impeller, institute are provided with the motor output shaft
Stating impeller includes front shroud and back shroud, and blade is provided between the front shroud and the back shroud.
7. centrifugal blower according to claim 1 or 2, it is characterised in that the air intake oralia is bolted to connection
On the housing.
8. centrifugal blower according to claim 1 or 2, it is characterised in that the casing back side panel is fixed on the motor
On installing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720524966.4U CN206708096U (en) | 2017-05-11 | 2017-05-11 | Noise-lowering centrifugal blower fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720524966.4U CN206708096U (en) | 2017-05-11 | 2017-05-11 | Noise-lowering centrifugal blower fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206708096U true CN206708096U (en) | 2017-12-05 |
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ID=60463132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720524966.4U Active CN206708096U (en) | 2017-05-11 | 2017-05-11 | Noise-lowering centrifugal blower fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013494A (en) * | 2017-05-11 | 2017-08-04 | 南通升科节能技术有限公司 | Noise-lowering centrifugal blower fan |
-
2017
- 2017-05-11 CN CN201720524966.4U patent/CN206708096U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013494A (en) * | 2017-05-11 | 2017-08-04 | 南通升科节能技术有限公司 | Noise-lowering centrifugal blower fan |
| CN107013494B (en) * | 2017-05-11 | 2023-12-26 | 江苏升科节能技术有限公司 | Noise-reducing centrifugal fan |
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