CN105697394B - The efficient exit flow field of microminiature is undistorted centrifugal blower - Google Patents
The efficient exit flow field of microminiature is undistorted centrifugal blower Download PDFInfo
- Publication number
- CN105697394B CN105697394B CN201610129029.9A CN201610129029A CN105697394B CN 105697394 B CN105697394 B CN 105697394B CN 201610129029 A CN201610129029 A CN 201610129029A CN 105697394 B CN105697394 B CN 105697394B
- Authority
- CN
- China
- Prior art keywords
- blade
- spiral case
- flowing
- centrifugal blower
- microminiature
- 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.)
- Expired - Fee Related
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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- 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
- F04D29/422—Discharge tongues
-
- 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
-
- 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
- F04D29/444—Bladed diffusers
-
- 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
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/52—Outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of undistorted centrifugal blower of the efficient exit flow field of microminiature, the undistorted centrifugal blower of this efficient exit flow field of microminiature includes blade（1）, wheel disc（2）, spiral case（3）, motor（4）, spiral case distortion correction extension（5）, flowing blending section（6）, arc deflector（7）；Blade（1）It is uniformly fixed to wheel disc（2）Circumference on, in motor（4）Drive under rotate, outside air is drawn into impeller.Gas is by centrifugal action in spiral case（3）Interior flowing, pass through spiral case distortion correction extension（5）, section is blended in flowing（6）Interior, air carries out appropriate blending, then in arc deflector（7）Guiding flow down blowing machine.Beneficial effects of the present invention：The inequality of microminiature centrifugal blower muzzle velocity is eliminated, more efficient environment is provided for radiator work, on the premise of flow and efficiency is ensured, reduces the thickness of blower fan, be advantageous to the application scenario of fit or near body.
Description
Technical field
The present invention relates to ventilation, radiating and refrigerating field, more particularly to a kind of Miniature temperature control ventilating system.
Background technology
Fig. 2 is conventional centrifugal blower fan sketch, and centrifugal blower is the principle that potential energy is converted to according to kinetic energy, is rotated using high speed
Impeller gas is accelerated, then slow down change flow direction, kinetic energy is converted to potential energy (pressure).In one-stage centrifugal blower fan, gas
Body is from axially into impeller, and gas is radially redirected when flowing through impeller, subsequently into diffuser.In diffuser, gas and changing
Flow direction causes to slow down, and this decelerating effect converts kinetic energy into pressure energy.Centrifugal fan device is applied to radiating and freezed
Field is a lot, and correlation technique shows with patent document, is not solved well also for the distortion of centrifugal blower output flow
Scheme.
The shortcomings that existing centrifugal blower is present is as follows：
Distorted 1. blower fan interior air-flow speed exists in outlet；
2. three-dimensional blade profile is excessively simple, flow losses be present；
3. centrifugal blower is used in the electronic equipment of the narrow spaces such as server, air-conditioned seat, common centrifugal blower
Thickness is larger, takes up space more.
Therefore, the prior art is defective, it is necessary to improve.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of microminiature in view of the shortcomings of the prior art efficiently to export stream
Undistorted centrifugal blower.
Technical scheme is as follows：
A kind of undistorted centrifugal blower of efficient exit flow field of microminiature, including spiral case, the motor positioned at spiral case center, installation
Wheel disc, the blade being uniformly distributed circumferentially on wheel disc in motor output shaft；It is characterized in that：
Above-mentioned blade is beveling blade, and the beveling blade refers to that the leaf top leading edge of blade is chamfered, leaf top excision blade
The 1/4~1 of total length, the 1/8~1/2 of blade inlet edge excision blade total height；
Above-mentioned volute outlet connects spiral case distortion correction extension by the tangent mode that seamlessly transits；Spiral case distortion correction is prolonged
Long section connects flowing blending section by the tangent mode that seamlessly transits, and spiral case distortion correction extension outlet is cut with volute outlet
Angled face institute is 75-85 °, and it is 100-110 ° that flowing blending section is angled with volute outlet section institute；
The outlet of above-mentioned flowing blending section has been evenly arranged 2-3 arc deflector；The radian of the arc deflector with
The outer side surface radian of the flowing blending section correspondence position is consistent；Define arc deflector front end and rear end：According to gas
Flow flow direction definition, the end face that air-flow first passes through is front end, after by end face be rear end；Above-mentioned arc deflector edge is corresponding
After the outer side surface radian direction of position is uniformly distributed, the arc deflector positioned at most inner side keeps back-end location constant, front end
Inside lateral deviation turns 10-14 ° again.
The operation logic of the efficient exit flow field of described microminiature is undistorted centrifugal blower is similar with common blower fan, in motor
Drive under, wheel disc is together rotated at a high speed with the blade being distributed in thereon, and low gas is formed in the space in the middle part of blade and wheel disc
Pressure, the air pressure outside centrifugal blower is higher, thus air be pressed into space in the middle part of wheel disc and by centripetal force effect together
Rotation, past the blades into spiral case, the purpose that speed reaches ventilation is obtained in the presence of rotation.
Described beveling blade, in blade without the opening position that in the spiral case chamfer, static pressure is connected in spiral case with extension
There is the low-pressure area of large area, have mass air flow around the outlet of this panel region flow direction, only minority of fluid flows through herein, makes this piece
The uneven static pressure for easily forming vortex, reducing outlet of barometric gradient in region.After blade is chamfered, because leaf road length shortens
, the friction loss decline suffered by air-flow so that the higher static energy that air-flow obtains maintains a segment distance, installation in Ye Daozhong
The centrifugal blower high-pressure area of beveling blade is bigger, therefore chamfers the static pressure that blade improves centrifugal blower, improves centrifugation wind
The performance of machine.
Described distortion correction extension and flowing blending section, main effect are only spiral case distortion correction extensions
Although the distortion of the external sidewind of spiral case, which improves, serves certain effect, for fluid inside, still than outside
It is much larger, the addition of this section of spiral case inlet pressure, its direction exported is changed, therefore fluid will enter in this segment type line spiral case
The a certain degree of blending of row, reduces velocity gradient, reaches the purpose of even speed size；In addition, flowing blending section changes stream
Body flows out the direction of centrifugal blower, does not occur flowing crowded phenomenon, so to be advantageous to streamline uniform for the selection of export direction
The realization of property.Fluid is after entering in the molded line spiral case newly added, the fluid on the outside of spiral case and the stream close to snail tongue side
Mutually extruded between body, the higher fluid inside of script energy transfers energy to the relatively low fluid of outside energy, fluid inside
Speed reduces, and lateral fluid speed rises, and realizes the uniformity of velocity magnitude.Meanwhile streamline is because runner is from original outlet
The turning flowing at end is changed into along streamlined flow, and flow is influenceed to tend towards stability by volute shape, so mutually being extruded between streamline
Phenomenon also disappear, realize the uniformity in fluid velocity direction.
Described arc deflector, it is arranged on the function in flow field with guiding flow of fluid.Fluid flows through deflector
When, flowing is forced by the effect of water conservancy diversion plate shape, deflector is arranged on the premise for meeting flow field fluid flow inside rule
Under, the stability of internal flow can be strengthened, the stability of flowing can be broken when not meeting flow field internal flow rule, play and disturb
The effect of stream.With shell relatively, the direction of arc shape and streamline is consistent the shape of outboard deflector camber line substantially,
Therefore identical yawing moment is kept not cause too much influence to flowing with shell；The position of inner side deflector then need by
Determined according to flow regime.The speed increase of arc deflector front end, rear end speed reduce, and make the state between each several part fluid
Parameter is more uniform.
Beneficial effects of the present invention：
1. devising new volute of blower, and deflector is set in volute of blower, changes the direction of flowing outlet simultaneously
Reach and eliminate fluid speed distortion caused by the fan outlet, worked for radiator and more efficient environment is provided；
2. blade has been carried out into machining, its blade profile is set more to meet the rule of flow of fluid in flow field, compared to original
Blower fan, flow improve 2%, greatly reduce flow losses；
3. the molded line and blade of pair blower fan have carried out three dimensional design, on the premise of flow and efficiency is ensured, wind is reduced
The thickness of machine, it can be used in more broadly field, be advantageous to the application scenario of fit or near body.
Described blade and blade top leading edge is chamfered, and downwardly toward blade inlet edge since the tail end of leaf top, is switched to blade inlet edge
1/8 can be optimal this effect.
It is 80 ° that described spiral case distortion correction extension outlet is angled with volute outlet section institute, flowing blending
Section and volute outlet section angled be 105 ° and can be optimal this effect.
Brief description of the drawings
Fig. 1 is the undistorted centrifugal blower schematic diagram of the efficient exit flow field of microminiature of the present invention；
Fig. 2 is conventional centrifugal blower fan schematic diagram；
Fig. 3 chamfers the blade schematic diagram of form one；
Fig. 4 chamfers the blade schematic diagram of form two；
Fig. 5 chamfers the blade schematic diagram of form three；
The common centrifugal blower distribution of exit velocities figures of Fig. 6；
Centrifugal blower outlet VELOCITY DISTRIBUTION that the efficient exit flow field of Fig. 7 microminiatures is undistorted；
Fig. 8 exit flow fields the are undistorted centrifugal blower surface of revolution；
Motion pattern during Fig. 9 deflector set location zero deflections；
Figure 10 deflectors set location deflects motion pattern at 14 °；
Tri- kinds of beveling blade main parameter calculation comparative result figures of Figure 11；
Label title in figure：1. blade；2. wheel disc；3. spiral case；4. motor；5. spiral case distortion correction extension；6. flowing
Blend section；7 arc deflectors.
Embodiment
Scheme one
A kind of undistorted centrifugal blower of efficient exit flow field of microminiature, including spiral case 3, the motor 4 positioned at the center of spiral case 3,
Wheel disc 2 installed in the output shaft of motor 4, the blade 1 being uniformly distributed circumferentially on wheel disc 2；It is characterized in that：Above-mentioned blade 1
To chamfer blade, the beveling blade refers to that the leaf top leading edge of blade is chamfered, the 1/4~1 of leaf top excision vane overall length degree, leaf
The 1/8~1/2 of piece leading edge excision blade total height；Above-mentioned spiral case 3 exports connects spiral case distortion by the tangent mode that seamlessly transits
Correct extension 5；Spiral case distortion correction extension 5 connects flowing blending section 6 by the tangent mode that seamlessly transits, and spiral case distortion is rectified
It is 75-85 ° that the outlet of length slow section 5 is angled with the outlet of spiral case 3 institute, flowing blending section 6 and the outlet institute of spiral case 3
Angled is 100-110 °；The outlet of above-mentioned flowing blending section 6 has been evenly arranged 2-3 arc deflector 7；The arc water conservancy diversion
The outer side surface radian of the radian of plate 7 and the flowing blending correspondence position of section 6 is consistent；Define the front end of arc deflector 7
And rear end：According to air current flow direction define, the end face that air-flow first passes through is front end, after by end face be rear end；Above-mentioned arc
After outer side surface radian direction of the shape deflector 7 along correspondence position is uniformly distributed, after the arc deflector of most inner side is kept
End position is constant, and inside lateral deviation turns 10-14 ° again for front end.
Scheme two
On the basis of scheme one, the leaf top leading edge of blade 1 is chamfered, and downwardly toward blade inlet edge since the tail end of leaf top, is switched to
The 1/8 of blade inlet edge.
Embodiment 1
With reference to figure 1, the efficient exit flow field of microminiature is undistorted centrifugal blower include blade 1, wheel disc 2, spiral case 3, motor 4,
Spiral case distortion correction extension 5, flowing blending section 6, arc deflector 7；Blade 1 is uniformly fixed in the circumference of wheel disc 2,
Rotated under the drive of motor 4, outside air is drawn into impeller.Gas is flowed by centrifugal action in spiral case 3, passes through snail
Shell distortion correction extension 5, in flowing blending section 6, air carries out appropriate blending, even speed flow field, then in arc
The dirty blowing machine of the guiding of deflector 7.
In centrifugal blower, entrance edge of blade is parallel with axle, but inlet air flow speed along the high direction of leaf be it is uneven, it is right
Blade, which carries out appropriate machining, can be effectively improved influence of this inhomogeneities to vane efficiency.Come for centrifugal blower
Say, because its main flow effect comes from accumulation caused by inlet air flow, therefore cutting is concentrated mainly on blade inlet edge.Pin
It is 90mm, internal diameter 70mm, aperture 40mm for external diameter to scheme one, width 20mm, rotating speed 6000r/min centrifugal blower,
In the case of beveling amount identical, the checking for having carried out three kinds of beveling forms calculates.Result of calculation shows, blade is cut off on leaf top
The 1/4~1 of total length, blade inlet edge are cut off in the range of the 1/8~1/2 of blade total height, chamfer the flow of blade all higher than original
Carry out unchamfered blade, wherein a pair of raising compressor flows of beveling form have preferable effect, meet the content described in scheme two.
Blade chamfers the deflection for reducing inlet air flow so that import impact loss is reduced, and thus reduces flow channels front end
Entrance is blocked along journey friction loss and Ye Dao imports, while import flow section overdraught velocity gradient is evenly distributed, and
Air velocity adapts to the quick change from blade tip to bottom during turning, and is bent to form it is possible thereby to reduce leaf road
Separation loss, decrease impeller tip exit swirl and Secondary Flow to a certain extent.
In the port of export of runner blending section, fluid on the outside of the spiral case and mutually squeezed between the fluid of snail tongue side
Pressure, the higher fluid inside of script energy transfer energy to the relatively low fluid of outside energy, and fluid inside speed reduces, outside
Fluid velocity rises, and the fluid on the outside of spiral case and the fluid velocity size close to snail tongue side are all uniformly middle main flow area
Velocity magnitude, realize the uniformity of velocity magnitude.
When flowing blending section present position is less than 100 °, the distortion of muzzle velocity and the flowing blending section described in scheme one
6 have certain difference, in order to which the result of speed distortion correction is better described, define distortion variance herein
The concept of (distortion variance), for weighing the degree of speed distortion：
In formula：DvDistortion variance (Distortion Variance) is represented,
The average speed obtained at section according to each point is represented,
V1, V2..., VnThe speed at each point taken at expression section.
It can be seen from formula, distortion variance shows that more greatly distortion is stronger, and uniformity is more bad.Two kinds of differences are calculated respectively
Flowing blending fragment position muzzle velocity distortion variance, D1Represent that the flowing in the defined of scheme one blends the scope of section 6, D2Table
Show and do not blend the scope of section 6 in the flowing of the defined of scheme one.
Result of calculation indicates the muzzle velocity in the range of 100-110 ° and distorts to have obtained good correction, and is less than this
During scope, the rectification effect of muzzle velocity distortion is not up to ideal state.
The setting of arc deflector 7 is determined according to the situation of internal flow.The number of deflector should not be too many, mistake
More deflectors can cause the runner between deflector excessively narrow and small, cause the unexpected of velocity gradient and barometric gradient, revolve
Whirlpool and backflow etc. are unfavorable for the situation of flowing, therefore the number of general arc deflector 7 is at 2-3 or so.For close to outside
Arc deflector 7 for, due to its camber line shape and shell relatively, the direction of arc shape and streamline is kept substantially
Unanimously, therefore with shell identical yawing moment is kept not cause too much influence to flowing.For the arc close to inner side
For deflector 7, because the outside away from shell, the flow trace of fluid are influenceed to have by itself speed and lateral fluid
Change, keep identical yawing moment to produce disturbance to more stable flow field itself, produce unnecessary vortex and return
Stream, as shown in Figure 7.Therefore according to the track of actual streamline, it is determined that the angle that arc deflector 7 inside lateral deviation in inner side turns is
10-14°。
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to protection scope of the present invention.
Claims (3)
1. a kind of undistorted centrifugal blower of efficient exit flow field of microminiature, including spiral case（3）, positioned at spiral case（3）The motor at center
（4）, installed in motor（4）The wheel disc of output shaft（2）, be uniformly distributed circumferentially in wheel disc（2）On blade（1）；Its feature exists
In：
Above-mentioned blade（1）To chamfer blade, the beveling blade refers to that the leaf top leading edge of blade is chamfered, and leaf top excision blade is total
The 1/4~1 of length, the 1/8~1/2 of blade inlet edge excision blade total height；
Above-mentioned spiral case（3）Outlet connects spiral case distortion correction extension by the tangent mode that seamlessly transits（5）；Spiral case distortion correction
Extension（5）Flowing blending section is connected by the tangent mode that seamlessly transits（6）, spiral case distortion correction extension（5）Outlet
With spiral case（3）Angled outlet institute is 75-85 °, flowing blending section（6）With spiral case（3）Outlet institute is angled to be
100-110°；
Above-mentioned flowing blends section（6）Outlet be evenly arranged 2-3 arc deflector（7）；The arc deflector（7）Arc
Degree blends section with the flowing（6）The outer side surface radian of correspondence position is consistent；Define arc deflector（7）Front end and after
End：According to air current flow direction define, the end face that air-flow first passes through is front end, after by end face be rear end；Above-mentioned arc is led
Flowing plate（7）After being uniformly distributed along the outer side surface radian direction of correspondence position, the arc deflector positioned at most inner side keeps rear end
Position is constant, and inside lateral deviation turns 10-14 ° again for front end.
2. the undistorted centrifugal blower of the efficient exit flow field of microminiature according to claim 1, it is characterised in that：Blade（1）
Leaf top leading edge is chamfered, and downwardly toward blade inlet edge since the tail end of leaf top, is switched to the 1/8 of blade inlet edge.
3. the undistorted centrifugal blower of the efficient exit flow field of microminiature according to claim 1, it is characterised in that：Described snail
Shell distortion correction extension（5）Outlet and spiral case（3）Angled outlet institute is 80 °, flowing blending section（6）With spiral case
（3）Angled outlet institute is 105 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610129029.9A CN105697394B (en) | 2016-03-07 | 2016-03-07 | The efficient exit flow field of microminiature is undistorted centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610129029.9A CN105697394B (en) | 2016-03-07 | 2016-03-07 | The efficient exit flow field of microminiature is undistorted centrifugal blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105697394A CN105697394A (en) | 2016-06-22 |
| CN105697394B true CN105697394B (en) | 2018-01-30 |
Family
ID=56220911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610129029.9A Expired - Fee Related CN105697394B (en) | 2016-03-07 | 2016-03-07 | The efficient exit flow field of microminiature is undistorted centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105697394B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762839B (en) * | 2016-11-24 | 2019-02-05 | 江苏乐科节能科技股份有限公司 | Eliminate the large-scale vapor scroll casing of centrifugal compressor and its method of secondary flow loss |
| JP6960464B2 (en) * | 2017-10-31 | 2021-11-05 | 三菱電機株式会社 | Centrifugal blower, blower, air conditioner and refrigeration cycle device |
| CN108843591A (en) * | 2018-06-12 | 2018-11-20 | 宁波建辰新型材料有限公司 | A kind of air blower |
| CN109489341B (en) * | 2018-10-24 | 2020-11-10 | 诸暨市鸿畴智能科技有限公司 | Shell and tube breakage preventing cooler based on energy conservation law |
| CN109322855B (en) * | 2018-12-04 | 2024-05-28 | 珠海格力电器股份有限公司 | Volute structure, centrifugal fan and new fan |
| CN109630466B (en) * | 2018-12-12 | 2024-01-23 | 扬州大学 | Deviation rectifying and vortex eliminating method for low-lift pump station water outlet flow passage and application thereof |
| CN115788957B (en) * | 2022-11-29 | 2023-05-30 | 广东顺威精密塑料股份有限公司 | Volute with vortex generator and multi-wing centrifugal fan using same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3684396A (en) * | 1970-05-04 | 1972-08-15 | Hg Ind Inc | Centrifugal fan with improved cut off means |
| EP0971131A2 (en) * | 1998-07-06 | 2000-01-12 | Ford Motor Company | Centrifugal blower assembly for an automotive vehicle |
| CN203201872U (en) * | 2013-04-27 | 2013-09-18 | 中联重科股份有限公司 | Centrifugal fan, volute and snow blowing vehicle |
| CN203453126U (en) * | 2013-09-09 | 2014-02-26 | 株洲联诚集团有限责任公司 | Double-volute centrifugal ventilator for heat dissipation of generator cooling system |
| CN205638972U (en) * | 2016-03-07 | 2016-10-12 | 南京菲瑞克机电科技有限公司 | Undistorted centrifugal fan of high -efficient exit flow field of microminiature |
-
2016
- 2016-03-07 CN CN201610129029.9A patent/CN105697394B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3684396A (en) * | 1970-05-04 | 1972-08-15 | Hg Ind Inc | Centrifugal fan with improved cut off means |
| EP0971131A2 (en) * | 1998-07-06 | 2000-01-12 | Ford Motor Company | Centrifugal blower assembly for an automotive vehicle |
| CN203201872U (en) * | 2013-04-27 | 2013-09-18 | 中联重科股份有限公司 | Centrifugal fan, volute and snow blowing vehicle |
| CN203453126U (en) * | 2013-09-09 | 2014-02-26 | 株洲联诚集团有限责任公司 | Double-volute centrifugal ventilator for heat dissipation of generator cooling system |
| CN205638972U (en) * | 2016-03-07 | 2016-10-12 | 南京菲瑞克机电科技有限公司 | Undistorted centrifugal fan of high -efficient exit flow field of microminiature |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105697394A (en) | 2016-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105697394B (en) | The efficient exit flow field of microminiature is undistorted centrifugal blower | |
| US11506211B2 (en) | Counter-rotating fan | |
| CN104329290B (en) | Centrifugal fan and air conditioner with same | |
| CN205559366U (en) | Centrifugal compressor's diffuser | |
| CN204371777U (en) | Fan blade and there is its fan | |
| CN113175443B (en) | Efficient low-noise three-dimensional flow impeller of backward centrifugal fan without volute | |
| CN104729041A (en) | Guide ring, air duct structure and air conditioner indoor cabinet | |
| CN110374900A (en) | A kind of flow-mixing blower fan with sinusoidal pattern meridional channel | |
| CN103486081B (en) | Axial flow fan blade, fan and air conditioner outdoor unit | |
| CN205638972U (en) | Undistorted centrifugal fan of high -efficient exit flow field of microminiature | |
| CN105240317A (en) | Fan blade | |
| CN202628612U (en) | Axial flow fan blade, fan and air conditioner outdoor unit | |
| CN213450988U (en) | Centrifugal impeller and ventilator thereof | |
| CN205639069U (en) | Movable vane, guiding subassembly and axial compressor cabinet -type air conditioner of axial compressor cabinet -type air conditioner | |
| CN207420973U (en) | Air conditioner, axial flow blower and its air passage | |
| CN110566500A (en) | Impeller of centrifugal ventilator | |
| CN207004918U (en) | A kind of centrifugal wind wheel that can improve flow field | |
| CN105201905B (en) | Centrifugal impeller assembly and centrifugal compressor | |
| CN105020176A (en) | Fan blade and centrifugal ventilator | |
| CN207393526U (en) | High-power micro-motor flow fan | |
| CN109099008B (en) | Centrifugal wind wheel with flow guide device | |
| CN206958002U (en) | A kind of noise reducing type radial fan | |
| CN203297148U (en) | Through-flow fan for air conditioner capable of effectively improving fan performance | |
| CN203671852U (en) | Guide ring, air duct structure and air conditioner indoor cabinet | |
| CN205136120U (en) | Tapering spindle counter -current centrifugal compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180130 |