CN105387003B - Fan guiding device and centrifugal fan - Google Patents
Fan guiding device and centrifugal fan Download PDFInfo
- Publication number
- CN105387003B CN105387003B CN201510952010.XA CN201510952010A CN105387003B CN 105387003 B CN105387003 B CN 105387003B CN 201510952010 A CN201510952010 A CN 201510952010A CN 105387003 B CN105387003 B CN 105387003B
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- CN
- China
- Prior art keywords
- flow guide
- fan
- guide device
- damage portion
- front disc
- 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.)
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Links
- 238000010276 construction Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 3
- 238000005119 centrifugation Methods 0.000 description 5
- 238000010992 reflux Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
-
- 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 invention relates to a fan flow guide device which comprises a flow guide part and a loss reduction part, wherein the flow guide part is of a cylindrical structure and comprises a first end for air inlet and a second end for air outlet, and the loss reduction part is arranged on the outer side wall close to the second end of the flow guide part; the loss reduction part is close to the outer wall at the second end of the flow guide part and is uniformly distributed along the circumferential direction, or is distributed along the circumferential direction at unequal intervals, or is freely distributed in a certain range. According to the fan flow guide device provided by the invention, the structure for reducing the resistance loss of the airflow is additionally arranged on the outer side surface of the fan flow guide device, so that the resistance loss caused by a flow boundary layer reflowing from the outer side of the flow guide device is reduced, the noise caused by energy dissipation is reduced, and the flow velocity disorder state of reflowing is improved, thereby achieving the purpose of reducing the noise, simultaneously reducing the power consumption level of a centrifugal fan system, and reducing the noise by 1-2dB and the power by about 8%.
Description
Technical field
The present invention relates to wind turbine correlative technology field, especially a kind of flow guide device of fan and centrifugal blower.
Background technology
Guiding device is the important accessory of wind turbine, and uniform velocity field and pressure are set up before the import of wind turbine
, improve fan efficiency to reduce flow losses.Guiding device structure can influence fan performance, design good guiding device stream
It is dynamic loss it is smaller, and design it is unreasonable condition for import can be made to deteriorate, cause fan performance to decline.The noise of gas centrifugation wind turbine
More and more concerned, existing centrifugation blade generally all cooperation guiding devices are used together, due to sound it is different (fan blade rotates,
Guiding device is static), lead to there must be certain interval between the two, this gap can not only cause to reveal, and make stream
Air-flow through the gap interacts with primary air, is further degrading the inlet conditions of centrifugal blower, turbulence intensity is caused to increase
Greatly, the noise of wind turbine increases therewith.
Invention content
In view of this, the purpose of the present invention is to provide a kind of flow guide device of fan and centrifugal blower, to solve existing skill
The technical problems such as airflow reflux drag losses are larger at air inlet of centrifugal fan in art.
According to the first aspect of the invention, a kind of flow guide device of fan, including diversion division and drop damage portion, the water conservancy diversion are provided
Portion is tubular construction, includes the first end for air inlet and the second end for outlet air, and the drop damage portion is positioned close to described
On the lateral wall of diversion division second end；The drop damage portion circumferentially uniformly divides on the outer wall at the diversion division second end
Cloth is either distributed along its circumferential non-equidistantly distributed or freely in a certain range, and the drop damage portion includes groove, institute
It is 0.5-2.5mm, end face diameter 0.5-5mm to state depth of groove.
Preferably, the drop damage portion includes bulge-structure.
Preferably, the groove is spherical groove or end face is round or polygon cylindrical groove.
Preferably, the protrusion is hemisphere jut or end face is round or polygon column-shaped projection.
Preferably, the height of projection is 0.5-2.5mm, end face diameter 0.5-5mm.
According to the second aspect of the invention, a kind of centrifugal blower, including centrifugal blower fan blade wheel and impeller front disc are provided, it is described
Impeller front disc is arranged in the side of the centrifugal blower fan blade wheel, also wraps and states flow guide device of fan, and the flow guide device of fan is set
It sets close to the position of the impeller front disc.
Preferably, the second end of the flow guide device of fan is presented axially in inside the impeller front disc.
Preferably, a drop damage portion part for the flow guide device of fan is presented axially on the inside of the impeller front disc, separately
A part is located on the outside of the impeller front disc.
Preferably, the damage portion that drops is located at the part on the outside of the impeller front disc at least accounts for the drop damage portion 4/5.
Flow guide device of fan provided by the invention reduces gas-flow resistance damage by increasing in flow guide device of fan outer surface
The structure of mistake reduces the drag losses caused by the flow boundary layer of side reflux outside guiding device, reduces energy dissipation and draw
The noise risen, improves the flow velocity disturbance state of reflux, to achieve the purpose that reduce noise, while can reduce centrifugation wind
The power consumption levels of machine system, may be implemented noise reduction 1-2dB, and power reduces 8% or so.
Description of the drawings
By referring to the drawings to the description of the embodiment of the present invention, above-mentioned and other purposes of the invention, feature and
Advantage will be apparent from, in the accompanying drawings：
Fig. 1 is flow guide device of fan schematic diagram；
Fig. 2 is enlarged drawing at A in Fig. 1；
Fig. 3 is centrifugal blower fan blade wheel and flow guide device of fan assembling schematic diagram；
Fig. 4 is enlarged drawing at B in Fig. 3；
Fig. 5 is that centrifugal blower fan blade wheel assembles schematic front view with flow guide device of fan.
Specific implementation mode
Hereinafter reference will be made to the drawings is more fully described various embodiments of the present invention.In various figures, identical element
It is indicated using same or similar reference numeral.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.
Flow guide device of fan provided by the invention is mainly used in the air inlet of centrifugal blower, and water conservancy diversion is carried out to air-flow,
And the noise and power consumption of wind turbine are reduced by the way that noise-reducing structure is arranged on the guiding device, with reference to specific embodiment pair
The concrete structure of flow guide device of fan of the present invention describes in detail.
As shown in Figure 1, flow guide device of fan 1 provided by the invention includes diversion division 11 and drop damage portion 12, the diversion division
11 be tubular construction, includes the first end for air inlet and the second end for outlet air, it is preferable that the first end diameter is more than
Second end diameter, and be arc along its side wall of the section of tubular construction axial direction, in order to which air flows.The drop damage portion 12 is arranged
On the lateral wall at 11 second end of the diversion division, and along the circumferentially distributed of the diversion division 11, for reducing air-flow
Noise (hereafter describe) of the air-flow by this when is reduced by drag losses when at this.As shown in Fig. 2,
The drop damage portion 12 is the groove being arranged on 11 lateral wall of the diversion division, it is preferable that the groove is depth 0.5-
The groove of the cylindrical groove or size of 2.5mm, end face diameter 0.5-5mm similar arbitrary shape therewith, if end face is ellipse
Shape, diamond shape or polygon etc., alternatively, the groove is spherical groove.In another embodiment, the drop damage portion 12 may also be configured to
Protrusion, it is preferable that the protrusion is height 0.5-2.5mm, and the cylinder or size of end face diameter 0.5-5mm is similar therewith
End face is the protrusion of arbitrary shape, such as end face is ellipse, diamond shape or polygon, alternatively, the protrusion may also be configured to ball
Shape.Further, the drop damage portion 12 can also include groove and protrusion simultaneously, and the groove and protrusion are uniform with arbitrary proportion
Or it is freely distributed.The drop damage portion 12 is uniformly distributed circumferentially on the outer wall at 11 second end of the diversion division, or
Along its circumferential non-equidistantly distributed, can also freely be distributed in a certain range.
Flow guide device of fan 1 provided by the invention, by the way that the drop damage portion 12, drop is arranged in 11 second end of the diversion division
The low drag losses caused by the flow boundary layer of 1 outer side reflux of flow guide device of fan, cause to reduce energy dissipation
Noise.
The present invention also provides a kind of centrifugal blowers being provided with above-mentioned flow guide device of fan 1, further include centrifugal blower fan blade wheel
21 and impeller front disc 22, the flow guide device of fan 1 air inlet in the centrifugal blower, the centrifugal blower fan blade wheel are set
21 are connected on motor reel, and a part is located at the impeller front disc in the axial direction in the drop damage portion 12 of the flow guide device of fan 1
In 22, another part is located at outside the impeller front disc 22.
As shown in Figure 3,4, the impeller front disc 22 is fixed to the air intake of the centrifugal blower fan blade wheel 21, the centrifugation wind
Fan blade 211 is provided on machine impeller 21.The flow guide device of fan 1 is positioned close at the impeller front disc 22.The water conservancy diversion
The second end in portion 11 is presented axially in 22 inside of the impeller front disc, and 12 part of the drop damage portion is located at the impeller front disc
22 insides, another part are located at 22 outside of the impeller front disc.As shown in figure 5, when being worked due to the centrifugal blower fan blade wheel 21
It needs to rotate, the impeller front disc 22 is rotated with the centrifugal blower fan blade wheel 21, and the flow guide device of fan 1 is static, so institute
Stating between flow guide device of fan 1 and impeller front disc 22 must there are certain gaps, i.e., the described impeller front disc 22 to be led close to described
Diameter at 11 second end of stream portion is more than the outer diameter of 11 second end of the diversion division.Preferably, the drop damage portion 12 is led described
The length that distribution in 11 axial direction of stream portion is located at by the diversion division 11 in the impeller front disc 22 in its axial direction determines,
Distribution of the i.e. described drop damage portion 12 in 11 axial direction of the diversion division is that the diversion division 11 is located at the impeller front disc 22
Inside 5 times or more of length in its axial direction, the drop damage portion 12 for being located at 22 outside of the impeller front disc in other words at least account for
The 4/5 of the drop damage portion 12.
Air inlet flows back when reducing centrifugal blower operation by the way that drop damage portion 12 is arranged on the flow guide device of fan 1
Gas-flow resistance loss, improve the flow velocity disturbance state of reflux, reduce centrifugal blower power, so reach reduction centrifugation wind
The effect of machine power consumption, while the drop damage portion 12 also reduces the noise of wind turbine.
Note：Axial direction described herein is upper and lower directions in Fig. 1.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.
Finally it should be noted that：Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the art, it can also do on the basis of the above description
Go out other various forms of variations or variation.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
The obvious changes or variations that Shen goes out are still in the protection scope of this invention.
Claims (9)
1. a kind of flow guide device of fan, which is characterized in that including diversion division and drop damage portion, the diversion division is tubular construction, packet
The first end for air inlet and the second end for outlet air are included, the drop damage portion is positioned close to the outer of the diversion division second end
On side wall；
The drop damage portion is uniformly distributed circumferentially on the outer wall at the diversion division second end, or circumferentially non-etc. along it
Spacing is distributed, or is freely distributed in a certain range, and the drop damage portion includes groove, and the depth of groove is 0.5-
2.5mm, end face diameter 0.5-5mm.
2. flow guide device of fan according to claim 1, which is characterized in that the drop damage portion includes bulge-structure.
3. flow guide device of fan according to claim 1, which is characterized in that the groove is spherical groove or end face is round
Or the cylindrical groove of polygon.
4. flow guide device of fan according to claim 2, which is characterized in that the protrusion is hemisphere jut or end face is round
The column-shaped projection of shape or polygon.
5. flow guide device of fan according to claim 4, which is characterized in that the height of projection is 0.5-2.5mm, end face
A diameter of 0.5-5mm.
6. a kind of centrifugal blower, including centrifugal blower fan blade wheel and impeller front disc, the impeller front disc is arranged in the centrifugal blower
The side of impeller, which is characterized in that further include claim 1-5 any one of them flow guide device of fan, the wind turbine water conservancy diversion
Device is positioned close to the position of the impeller front disc.
7. centrifugal blower according to claim 6, which is characterized in that the second end of the flow guide device of fan is in the axial direction
Inside the impeller front disc.
8. centrifugal blower according to claim 7, which is characterized in that a drop damage portion part for the flow guide device of fan exists
It is located axially on the inside of the impeller front disc, another part is located on the outside of the impeller front disc.
9. centrifugal blower according to claim 8, which is characterized in that the drop damage portion is located on the outside of the impeller front disc
Part at least accounts for the 4/5 of the drop damage portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510952010.XA CN105387003B (en) | 2015-12-16 | 2015-12-16 | Fan guiding device and centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510952010.XA CN105387003B (en) | 2015-12-16 | 2015-12-16 | Fan guiding device and centrifugal fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105387003A CN105387003A (en) | 2016-03-09 |
| CN105387003B true CN105387003B (en) | 2018-11-02 |
Family
ID=55419633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510952010.XA Active CN105387003B (en) | 2015-12-16 | 2015-12-16 | Fan guiding device and centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105387003B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782113B (en) * | 2016-05-04 | 2018-12-04 | 珠海格力电器股份有限公司 | Fan blade and air conditioner |
| CN107956746A (en) * | 2017-10-20 | 2018-04-24 | 珠海格力电器股份有限公司 | Noise reduction current collector for centrifugal fan, centrifugal fan and air conditioning system |
| CN108953231A (en) * | 2018-09-04 | 2018-12-07 | 中国空气动力研究与发展中心低速空气动力研究所 | A kind of collector air inlet device of centrifugal blower |
| CN109469648B (en) * | 2018-10-31 | 2021-06-04 | 泛仕达机电股份有限公司 | Fan and current collector thereof |
| CN109737080A (en) * | 2019-02-19 | 2019-05-10 | 苏州众志新环冷却设备有限公司 | A kind of Air Exhaust Heat Dissipating Double-fuselage |
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|---|---|---|---|---|
| CN104728160A (en) * | 2013-12-20 | 2015-06-24 | 依必安派特穆尔芬根有限两合公司 | Radial-flow impeller and fan unit |
| CN204476871U (en) * | 2015-01-27 | 2015-07-15 | 浙江理工大学 | A kind of centrifugal blower slip ring adding anti-vortex ring |
| CN204476870U (en) * | 2015-01-27 | 2015-07-15 | 浙江理工大学 | A kind of centrifugal blower slip ring |
| CN205503561U (en) * | 2015-12-16 | 2016-08-24 | 珠海格力电器股份有限公司 | Fan guiding device and centrifugal fan |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3700217B2 (en) * | 1995-10-31 | 2005-09-28 | 株式会社デンソー | Centrifugal blower |
| KR102122259B1 (en) * | 2013-04-12 | 2020-06-12 | 엘지전자 주식회사 | Turbo Fan |
-
2015
- 2015-12-16 CN CN201510952010.XA patent/CN105387003B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728160A (en) * | 2013-12-20 | 2015-06-24 | 依必安派特穆尔芬根有限两合公司 | Radial-flow impeller and fan unit |
| CN204476871U (en) * | 2015-01-27 | 2015-07-15 | 浙江理工大学 | A kind of centrifugal blower slip ring adding anti-vortex ring |
| CN204476870U (en) * | 2015-01-27 | 2015-07-15 | 浙江理工大学 | A kind of centrifugal blower slip ring |
| CN205503561U (en) * | 2015-12-16 | 2016-08-24 | 珠海格力电器股份有限公司 | Fan guiding device and centrifugal fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105387003A (en) | 2016-03-09 |
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