CN105387003A - Fan guiding device and centrifugal fan - Google Patents
Fan guiding device and centrifugal fan Download PDFInfo
- Publication number
- CN105387003A CN105387003A CN201510952010.XA CN201510952010A CN105387003A CN 105387003 A CN105387003 A CN 105387003A CN 201510952010 A CN201510952010 A CN 201510952010A CN 105387003 A CN105387003 A CN 105387003A
- Authority
- CN
- China
- Prior art keywords
- flow guide
- fan
- guide device
- front disc
- centrifugal blower
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 claims description 4
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 2
- 238000010586 diagram 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
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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 used for air inlet and a second end used 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. 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 blower fan correlative technology field, particularly a kind of flow guide device of fan and centrifugal blower.
Background technique
Flow guide device is the important accessory of blower fan, before the import of blower fan, set up uniform velocity field and pressure field, improves fan efficiency to reduce flow losses.Flow guide device structure can affect fan performance, designs good flow guide device flow losses less, and designs unreasonable meeting condition for import is worsened, and causes fan performance to decline.The noise of gas centrifugation blower fan is also more and more concerned, existing centrifugation blade generally all coordinates flow guide device to use together, due to sound difference, (fan blade rotates, flow guide device is static), cause must there is certain interval between the two, this gap not only can cause leakage, and make to flow through the air-flow in this gap and main air flow interacts, be degrading the inlet conditions of centrifugal blower further, cause turbulence intensity to increase, the noise of blower fan increases thereupon.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of flow guide device of fan and centrifugal blower, to solve the technical problems such as air inlet of centrifugal fan place airflow reflux drag losses in prior art is larger.
According to a first aspect of the invention, there is provided a kind of flow guide device of fan, comprise diversion division and fall damage portion, described diversion division is tubular construction, comprise the first end for air intake and the second end for air-out, described in fall on outer side wall that damage portion is arranged near described diversion division second end.
Preferably, falling damage portion described in is groove and/or protruding structure.
Preferably, described groove is spherical groove or end face is circle, rhombus or polygonal cylindrical groove.
Preferably, described depth of groove is 0.5-2.5mm, and end face diameter is 0.5-5mm.
Preferably, described projection is hemisphere jut or end face is circle, rhombus or polygonal column-shaped projection.
Preferably, described height of projection is 0.5-2.5mm, and end face diameter is 0.5-5mm.
According to a second aspect of the invention, there is provided a kind of centrifugal blower, comprise centrifugal blower fan blade wheel and impeller front disc, described impeller front disc is arranged on the side of described centrifugal blower fan blade wheel, also wrap and state flow guide device of fan, described flow guide device of fan is arranged on the position near described impeller front disc.
Preferably, the second end of described flow guide device of fan is presented axially in described impeller front disc inside.
Preferably, the damage portion that a falls part for described flow guide device of fan is presented axially in inside described impeller front disc, and another part is positioned at outside described impeller front disc.
Preferably, fall described in the damage portion part be positioned at outside described impeller front disc at least account for described in 4/5 of damage portion falls.
Flow guide device of fan provided by the invention, by increasing the structure reducing gas-flow resistance loss at flow guide device of fan outer surface, reduce the drag losses that the flow boundary layer of side reflux causes from flow guide device, reduce the noise that energy dissipation causes, improve the flow velocity disturbance state of backflow, thus reach the object reducing noise, the power consumption levels of centrifugal blower fan system can be reduced simultaneously, noise reduction 1-2dB can be realized, power reduction about 8%.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the embodiment of the present invention, above-mentioned and other objects of the present invention, feature and advantage will be more clear, in the accompanying drawings:
Fig. 1 is flow guide device of fan schematic diagram;
Fig. 2 is A place enlarged view in Fig. 1;
Fig. 3 is that centrifugal blower fan blade wheel and flow guide device of fan assemble schematic diagram;
Fig. 4 is B place enlarged view in Fig. 3;
Fig. 5 is that centrifugal blower fan blade wheel and flow guide device of fan assemble schematic front view.
Embodiment
Hereinafter with reference to accompanying drawing, various embodiment of the present invention is described in more detail.In various figures, identical element adopts same or similar reference character to represent.For the sake of clarity, the various piece in accompanying drawing is not drawn in proportion.
Flow guide device of fan provided by the invention is mainly used in the air inlet of centrifugal blower, water conservancy diversion is carried out to air-flow, and by arranging noise and the power consumption that noise-reducing structure reduces blower fan on described flow guide device, describe in detail below in conjunction with the concrete structure of specific embodiment to flow guide device of fan of the present invention.
As shown in Figure 1, flow guide device of fan 1 provided by the invention comprises diversion division 11 and falls damage portion 12, described diversion division 11 is tubular construction, comprise the first end for air intake and the second end for air-out, preferably, described first end diameter is greater than the second end diameter, and is arc along its sidewall of cross section of tubular construction axis, so that air flowing.The described damage portion 12 that falls is arranged on the outer side wall at described diversion division 11 second end place, and distribute along the circumference of described diversion division 11, for reducing air-flow by this place time drag losses so that reduce air-flow by this place time noise (hereafter describing in detail).As shown in Figure 2, the described damage portion 12 that falls is for being arranged on the groove on described diversion division 11 outer side wall, preferably, described groove is degree of depth 0.5-2.5mm, the cylindrical groove of end face diameter 0.5-5mm, or the groove of the close with it arbitrary shape of size, if end face is oval, rhombus or polygonal etc., or described groove is spherical groove.In another embodiment, the described damage portion 12 that falls also can be set to projection, preferably, described projection is height 0.5-2.5mm, end face diameter 0.5-5mm's is cylindrical, or the close with it end face of size is the projection of arbitrary shape, if end face is oval, rhombus or polygonal etc., or described projection also can be set to spherical.Further, described in fall damage portion 12 and also can comprise groove and projection simultaneously, described groove and protruding with arbitrary proportion evenly or freely distribute.The described damage portion 12 that falls is uniformly distributed circumferentially on the outer wall near described diversion division 11 second end place, or along its circumferential non-equidistance distribution, freely can also distribute in certain scope.
Flow guide device of fan 1 provided by the invention, falls damage portion 12, reduces the drag losses caused from the flow boundary layer of the side reflux of flow guide device of fan 1 described in arranging at described diversion division 11 second end, thus reduces the noise that energy dissipation causes.
The present invention also provides a kind of centrifugal blower being provided with above-mentioned flow guide device of fan 1, also comprise centrifugal blower fan blade wheel 21 and impeller front disc 22, described flow guide device of fan 1 is arranged on the air inlet of described centrifugal blower, described centrifugal blower fan blade wheel 21 is connected on motor reel, the damage portion 12 that falls of a described flow guide device of fan 1 in the axial direction part is positioned at described impeller front disc 22, and another part is positioned at outside described impeller front disc 22.
As shown in Figure 3,4, described impeller front disc 22 is fixed to the air intake of described centrifugal blower fan blade wheel 21, and described centrifugal blower fan blade wheel 21 is provided with fan blade 211.Described flow guide device of fan 1 is arranged near described impeller front disc 22 place.Second end of described diversion division 11 is presented axially in inside described impeller front disc 22, described in fall damage portion 12 part and be positioned at inside described impeller front disc 22, another part is positioned at outside described impeller front disc 22.As shown in Figure 5, owing to needing to rotate when described centrifugal blower fan blade wheel 21 works, described impeller front disc 22 is rotated with described centrifugal blower fan blade wheel 21, described flow guide device of fan 1 is static, so must leave certain gap between described flow guide device of fan 1 and impeller front disc 22, namely the diameter of described impeller front disc 22 near described diversion division 11 second end place is greater than the external diameter of described diversion division 11 second end.Preferably, the described damage portion 12 that falls is positioned at the length decision in its axial direction of described impeller front disc 22 in described diversion division 11 distribution axially by described diversion division 11, namely falling damage portion 12 described in described diversion division 11 distribution is axially more than 5 times that described diversion division 11 is positioned at described impeller front disc 22 length in its axial direction, be positioned in other words to fall described in outside described impeller front disc 22 damage portion 12 at least account for described in 4/5 of damage portion 12 falls.
By arranging on described flow guide device of fan 1, the gas-flow resistance loss that damage portion 12 reduces air inlet backflow when centrifugal blower runs is fallen, improve the flow velocity disturbance state of backflow, reduce centrifugal blower power, and then reach the effect reducing centrifugal blower power consumption, simultaneously, the noise that damage portion 12 also reduces blower fan falls.
Note: axis described is herein above-below direction in Fig. 1.
Should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or control panel, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.
Last it is noted that obviously, above-described embodiment is only for example of the present invention is clearly described, and the restriction not to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And thus the apparent change of amplifying out or variation be still among protection scope of the present invention.
Claims (10)
1. a flow guide device of fan, is characterized in that, comprise diversion division and fall damage portion, described diversion division is tubular construction, comprises the first end for air intake and the second end for air-out, described in fall damage portion and be arranged on the outer side wall of described diversion division second end.
2. flow guide device of fan according to claim 1, is characterized in that, described in fall damage portion be groove and/or protruding structure.
3. flow guide device of fan according to claim 2, is characterized in that, described groove is spherical groove or end face is circle, rhombus or polygonal cylindrical groove.
4. flow guide device of fan according to claim 3, is characterized in that, described depth of groove is 0.5-2.5mm, and end face diameter is 0.5-5mm.
5. flow guide device of fan according to claim 2, is characterized in that, described projection is hemisphere jut or end face is circle, rhombus or polygonal column-shaped projection.
6. flow guide device of fan according to claim 5, is characterized in that, described height of projection is 0.5-2.5mm, and end face diameter is 0.5-5mm.
7. a centrifugal blower, comprise centrifugal blower fan blade wheel and impeller front disc, described impeller front disc is arranged on the side of described centrifugal blower fan blade wheel, it is characterized in that, also comprise the flow guide device of fan described in any one of claim 1-6, described flow guide device of fan is arranged on the position near described impeller front disc.
8. centrifugal blower according to claim 7, is characterized in that, the second end of described flow guide device of fan is presented axially in described impeller front disc inside.
9. centrifugal blower according to claim 8, is characterized in that, the damage portion that a falls part for described flow guide device of fan is presented axially in inside described impeller front disc, and another part is positioned at outside described impeller front disc.
10. centrifugal blower according to claim 9, is characterized in that, described in fall damage portion fall the damage portion part be positioned at outside described impeller front disc at least account for described in 4/5 of damage portion falls.
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 true CN105387003A (en) | 2016-03-09 |
| CN105387003B CN105387003B (en) | 2018-11-02 |
Family
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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) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782113A (en) * | 2016-05-04 | 2016-07-20 | 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 |
| CN109469648A (en) * | 2018-10-31 | 2019-03-15 | 泛仕达机电股份有限公司 | A kind of blower and its collector |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09126193A (en) * | 1995-10-31 | 1997-05-13 | Denso Corp | Centrifugal blower |
| KR20140123333A (en) * | 2013-04-12 | 2014-10-22 | 엘지전자 주식회사 | Turbo Fan |
| 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 |
-
2015
- 2015-12-16 CN CN201510952010.XA patent/CN105387003B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09126193A (en) * | 1995-10-31 | 1997-05-13 | Denso Corp | Centrifugal blower |
| KR20140123333A (en) * | 2013-04-12 | 2014-10-22 | 엘지전자 주식회사 | Turbo Fan |
| 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782113A (en) * | 2016-05-04 | 2016-07-20 | 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 |
| CN109469648A (en) * | 2018-10-31 | 2019-03-15 | 泛仕达机电股份有限公司 | A kind of blower and its collector |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105387003B (en) | 2018-11-02 |
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