CN109973410A - A kind of no spiral case centrifugal fan - Google Patents
A kind of no spiral case centrifugal fan Download PDFInfo
- Publication number
- CN109973410A CN109973410A CN201910287921.3A CN201910287921A CN109973410A CN 109973410 A CN109973410 A CN 109973410A CN 201910287921 A CN201910287921 A CN 201910287921A CN 109973410 A CN109973410 A CN 109973410A
- Authority
- CN
- China
- Prior art keywords
- impeller
- shroud
- spiral case
- centrifugal fan
- hub disk
- 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
- 238000000034 method Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 2
- 238000009423 ventilation Methods 0.000 abstract description 11
- 230000006872 improvement Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000005713 exacerbation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005303 weighing Methods 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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- 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
-
- 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
- F04D29/662—Balancing of rotors
-
- 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
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or 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
- F04D29/66—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 object of the present invention is to provide a kind of no spiral case centrifugal fans, including motor, impeller, air inlet, bracket and panel, the motor includes stator and rotor, and one end of the bracket is fixedly connected with panel, and the other end of the bracket is fixedly connected with the stator of motor；The rotor of the motor is connect with impeller, and the shroud and air inlet running-on of impeller cooperate, and the arrival end of air inlet is fixedly connected with panel；The impeller includes hub disk, blade and shroud, the blade is between the shroud and hub disk of impeller, hub disk, blade, the shroud of impeller are fixedly connected, the shroud, hub disk are respectively set a series of for installing the aperture of balancing patch at outer diameter, convenient for installing balancing patch additional on impeller, realize dynamic balance calibration quick and precisely.Simultaneously as the improvement of air inlet itself molded line especially suction inlet, effectively increases the efficiency of ventilation blower, and reduce ingress noise.
Description
Technical field
The present invention relates to ventilation blower technical field more particularly to a kind of no spiral case centrifugal fans.
Background technique
Outer rotor motor driven without after spiral case to centrifugal fan belong to motor and ventilation blower direct connection driving, complete machine structure
It is compact, the space occupied can be greatlyd save, is widely used in ventilation and air conditioning equipment, cleaning equipment, ventilation and air conditioning system, by excellent
Change such ventilation blower can be effectively reduced in structure electric power energy consumption and noise.
Low pressure centrifugal fan impeller has certain axial width, the method that dynamic balance calibration takes two-sided correction.
In general, carrying out dynamic balance of impeller timing by the way of aggravating, the privileged site drilling in the wheel disc or blade of impeller is needed
After aggravate, or the welding modes such as balance weight aggravate, and to realize dynamic balancing, aforesaid way will cause in the correction course of impeller
The deformation and balancing patch position inaccurate of impeller, cause dynamic balance calibration precision that may deviate.
Summary of the invention
The object of the present invention is to provide a kind of no spiral case centrifugal fans, pass through the reserved through hole of disk before the impeller and hub disk
It installs balancing patch additional and realizes dynamic balance calibration, simultaneously as the improvement at air inlet itself molded line especially suction inlet position, improves
The efficiency and reduction ingress noise of ventilation blower.
To achieve the above object, the technical scheme is that
To centrifugal fan, including motor 1, impeller 2, air inlet 3, bracket 4 and panel 5, the motor packet after a kind of no spiral case
Stator and rotor are included, one end of the bracket 4 is fixedly connected with panel 5, and the other end of the bracket 4 and the stator of motor 1 are solid
Fixed connection；The rotor of the motor 1 is connect with one end of impeller 2, and impeller 2 is cooperated by shroud inner hole and 3 running-on of air inlet, into
The arrival end in air port 3 is fixedly connected with panel 5；The impeller 2 includes hub disk 23, blade 22 and shroud 21, and the blade is in leaf
Between the shroud and hub disk of wheel, hub disk, blade, the shroud of impeller are fixedly connected；The shroud, hub disk are set respectively at outer diameter
Set the series of holes 211 and series of holes 231 for installing balancing patch.
The series of holes of impeller front disc and hub disk is through-hole, is uniformly distributed respectively in shroud, hub disk circumferencial direction, before described
The center of circle in its each hole of the series of holes of disk and hub disk is equal to impeller center radius, the number phase of shroud and hub disk series of holes
Together, the phase of circumferencial direction is consistent.
The center of circle in shroud and each hole of hub disk series of holes is greater than the blade outer rim to impeller center to impeller center radius
Radius.Series of holes is within the scope of the vaneless diffuser of impeller periphery, and ventilator pressure and efficiency will not be made to reduce.
The balancing patch 24 and shroud and hub disk connects by the series of holes rivet 25, the diameter of series of holes and
The diameter of rivet matches.
When Centrifugal Fan Impeller dynamic balance calibration of the invention, before two correcting planes are respectively impeller outer diameter position
Disk plane and hub disk plane, and dynamic balancing piece collection riveting method is separately fixed at shroud outer diameter position and hub disk outer diameter part
Position, it is solid and reliable, blade is not influenced and is done work to air-flow, and presetting for the above-mentioned series of apertures on shroud and hub disk allows to
The quantity for installing the circumferential position of balancing patch additional greatly increases, and is no longer limited to the number of less several blades, can be convenient fast
Install dynamic balancing piece additional promptly, hence it is evident that save the time temporarily to drill and guarantee bore position precision, prevent from drilling or welding causing
Impeller deformation, advantageously ensure that balance quality.
The present invention air inlet setting turns back steady flow segment " abc ", the steady flow segment " abc " by truncated cone-shaped cone section " ab " and
" bc " composition, the angle of formation is respectively J1、J2、J3、J4, the axial height of steady flow segment " abc " is h, is carried out at a, b, c tri-
Rounded corner smoothly transits processing.The ratio range of the steady flow segment axial height h and the air inlet axial direction overall height H are as follows:
H/H=0.125 ~ 0.225,
Angle J1=90 ° ~ 180 °,
Angle J2=90 ° ~ 180 °,
Angle J3=90 ° ~ 180 °,
Angle J4=90 ° ~ 180 °,
Angle J1< angle J3 。
In general, the suction inlet of the air inlet front end of centrifugal fan is the disc of a certain diameter, by ventilator structure
Or the limitation of ventilation and air conditioning system structure size, the diameter is always less than normal, reaches most when the diameter of air inlet is less than suction loss
Hour needed for intet diameter when, be easy suction inlet outer diameter inside line formed vortex, cause stress loss, noise adds
Greatly, air inlet area is reduced, turbulent gases, which can be inhaled into impeller internal, therewith leads to the reduction of impeller mechanical efficiency.
The purpose of the present invention is air inlet inlet be arranged a steady flow segment so that air-flow by area have one gradually
Increased process, alleviate to a certain extent it is entry accelerated too fast, can effectively reduce the pressure loss, avoid noise increase, optimization
The flow condition of impeller inlet air-flow, it is ensured that efficiency of the impeller to air work.
Air inlet with entrance steady flow segment of the invention can facilitate realization, not with different material and technique
Increase material and process costs, for example, formed by stretching steel plate, injection molding etc..
Flanging section " stu " is arranged at 21 outer diameter of disk before the impeller in the present invention, and flanging section is arranged at 23 outer diameter of impeller hub disk
"xyz".It significantly strengthens the rigidity of shroud and hub disk and flatness, better ensures that dynamic balance of impeller precision.
The outer diameter of blade 22 of the present invention is less than the outer diameter of the shroud 21 and hub disk 23.Form the nothing at impeller outer diameter position
The diffuser of blade, so that outlet high-speed flow passes through impeller internal flow area under the premise of no blade does work to it
Constantly expand, reduces impeller outlet air velocity and outlet pressure loss, to improve static pressure of fan and efficiency.
Direct tube section " pq " is arranged in the inlet of impeller front disc 21 of the present invention, can reinforce shroud entrance rigidity, guarantee that shroud enters
The circularity of mouth inner circle and the radial clearance uniformity cooperated with air inlet outlet, and since " pq " cylindrical section has certain axial length
Degree can make air inlet and impeller have adjustable range certain on axial position when assembling, and radial clearance will not change, this
The occurrence of following two when there are a deviation in the practical set position and former design that sample avoids air inlet: air inlet protrudes into
Impeller is more so that radial fit gap is increased or is goed deep into impeller is less causes axial overlap distance partially short, because without occur because of
Interior leakage increase causes ventilator pressure and flow to decline, efficiency decline happens.
Motor 1 of the present invention partially protrudes into inside impeller 2, so that ventilation blower complete machine axial dimension minimizes, with ordinary motor
The backward centrifugal fan of driving is compared, and complete machine structure is particularly compact, to ventilation and air conditioning equipment, cleaning equipment, ventilation
The structure design of air conditioning system user brings great convenience, and the space occupied is greatly saved.
It is of the invention without the emphasis method corrected after spiral case to the dynamic balance of impeller of centrifugal fan, comprising: by dynamic flat
Weighing apparatus correction determines that impeller needs the weight m of the position N aggravated and the balancing patch for needing to aggravate；If N is located in the series of apertures,
Add weight is the balancing patch of m on the hole；If N decomposes the position not in the series of apertures, by the weight m of balancing patch
The adjacent hole in left and right, respectively m1And m2, add the balancing patch of corresponding weight respectively on two hole.
Detailed description of the invention
Fig. 1 is after a kind of no spiral case of the present invention to a kind of schematic diagram of embodiment of centrifugal fan；
Fig. 2-4 is the impeller schematic diagram after a kind of no volute body of the present invention to centrifugal fan；
Fig. 5 is the cross section view cooperated after air inlet from a kind of no spiral case of the present invention to centrifugal fan and impeller；
Fig. 6 is the portion the C enlarged drawing for cooperating figure after air inlet from a kind of no spiral case of the present invention to centrifugal fan and impeller；
Fig. 7 is the portion the D enlarged drawing for cooperating figure after air inlet from a kind of no spiral case of the present invention to centrifugal fan and impeller；
Fig. 8 is the portion the E enlarged drawing for cooperating figure after air inlet from a kind of no spiral case of the present invention to centrifugal fan and impeller；
Fig. 9 is cone arc air inlet schematic diagram；
Figure 10 is the air inlet schematic diagram after a kind of no spiral case of the present invention to centrifugal fan；
Figure 11 is after a kind of no spiral case of the present invention to the portion the A enlarged drawing of the air inlet schematic diagram of centrifugal fan.
Figure 12 is the circumferential position schematic diagram that impeller imbalance aggravates；
Figure 13 is that the quality of uneven exacerbation distributes schematic diagram to the adjacent specific position in circumferencial direction two sides.
In figure:
1. motor, 2. impeller assemblies, in which: 21. shrouds, 22. blades, 23. hub disks, 24. balancing patches, 25. rivets, 3. air inlets
Mouthful, 4. brackets, 5. panels, 211. impeller front disc apertures, 231. impeller hub disk apertures.
Specific embodiment
The number of blade of the present invention without spiral case Centrifugal Fan Impeller 2 is 7, outlet diameter are as follows: D2=355mm, impeller 2
Outer diameter D3=406mm, impeller front disc 21 equally distributed matrix of holes 211, hub disk 23 at outer diameter are uniform at outer diameter
The matrix of holes 231 of distribution, aperture are d=5.2mm, are matched with diameter for the rivet of 5 mm, and number is 21, in
Circular diameter where the heart is DP1=DP2=380mm is greater than blade exit diameter 355mm.
Air inlet be sheet metal drawing and forming, axial height are as follows: H=64mm, wherein the steady flow segment of Curve guide impeller is as follows:
Axial height are as follows: h=12.8mm, i.e. h/H=0.2,
Angle J1=114 °,
Angle J2=157 °,
Angle J3=125 °,
Angle J4=168 °,
Moreover, angle J1< angle J3, equal arc transition processing at a, b, c.
Air-flow thus air inlet import impeller in, in the case of general cone arc air inlet contrastingly, air inlet master
It wants critical size not change, and the vortex at a can be weakened to a certain extent, it is ensured that airflow smooth enters impeller internal, from
And fan efficiency is improved, reduce noise and power consumption.
Impeller front disc 21 entrance direct tube section " pq " axial length are as follows: 10.5mm, according to the requirement of general standard, axial overlap
Length is that the 0.8-1.2% of impeller diameter is calculated, and Centrifugal Fan Impeller of the invention and air inlet axial overlap length are 5mm,
For position axially mounted for air inlet, maximum has the adjustable range of 6.5mm.
Embodiment model machine and comparison model machine are compared, other than above-mentioned improvement, remaining planform and size with
And matched motor is all the same.
Revolving speed: 2600r/min is tested, air quantity: 4320m is compared3/ h, comparing result are as follows:
Model machine: static pressure 862Pa is compared, fan efficiency: 71.42%, noise: 79.8dB (A)；
Embodiment model machine: static pressure 877Pa, fan efficiency: 72.66%, noise: 79.2dB (A).
The present embodiment model machine static pressure and efficiency improve 1% or more, and noise also has decline.
Illustrate another aspect of the present invention, the exacerbation side corrected after no spiral case to the dynamic balance of impeller of centrifugal fan below
Method.
As illustrated by figs. 12-13, the present invention without after spiral case to the dynamic balance of impeller of centrifugal fan correct emphasis method,
It is characterized in that, comprising: by dynamic balance calibration, determine the balance slice weight that impeller needs the position N aggravated and needs to aggravate
Measure m；If N is located in the series of apertures, add weight is the balancing patch of m on the hole；If N, will not in the series of apertures
The weight m of balancing patch decomposes the adjacent hole N in left and right of the position1And N2, wherein N1The angle of O and NO is α1, N2The folder of O and NO
Angle is α2, N1O and N2The angle of O is α；Determine the hole N1And N2The upper weight m for needing to aggravate1、m2, make the corresponding length of straight line AC
Representation quality m is spent, the angle for making straight line AB and AC is α1, the angle for making straight line AD and AC is α2, make the parallel AB of straight line CD, straight line
The length representative quality m of AD parallel BC, straight line AB1, the length representative quality m of straight line AD2.In the hole N1And N2It is upper to add respectively
Upper and weight m1、m2The balancing patch of corresponding weight, realizes the dynamic balance calibration of impeller.
It is more to preset serial hole number for disk and hub disk before the impeller, then the corresponding center of circle between every two adjacent apertures
Angle is with regard to smaller, for identical counterweight quality m, decomposes the adjacent default aperture position of its initial circumferential position
Balanced-weighted quality sum will be smaller, as shown in Figure 13 (b), AE, EC respectively represent balance weight install small hole count it is less when (β
> α, β=β1+β2) same size overall balance weight mass m two decomposition quality m3And m4, then (m3+m4) > (m1+m2)。
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. to centrifugal fan after a kind of no spiral case, which is characterized in that including motor, impeller, air inlet, bracket and panel, institute
Stating motor includes stator and rotor, and one end of the bracket is fixedly connected with panel, the other end of the bracket and determining for motor
Son is fixedly connected；The rotor of the motor is connect with impeller, and the shroud and air inlet running-on of impeller cooperate, the arrival end of air inlet
It is fixedly connected with panel；The impeller includes hub disk, blade and shroud, and the blade is between the shroud and hub disk of impeller, leaf
Hub disk, blade, the shroud of wheel are fixedly connected, and the shroud, hub disk are respectively set a series of for installing balance at outer diameter
The aperture of piece.
2. to centrifugal fan after no spiral case according to claim 1, which is characterized in that the series of holes is through-hole,
It is uniformly distributed respectively in shroud, hub disk circumferencial direction, the center of circle in its each hole of the series of holes of the shroud and hub disk is into impeller
Heart radius is equal, and shroud is consistent with the phase of the circumferencial direction of hub disk series of holes, aperture number is identical.
3. to centrifugal fan after no spiral case according to claim 1, which is characterized in that the shroud and hub disk series are small
Radius of the center of circle in each hole in hole to impeller center radius greater than the blade outer rim to impeller center.
4. to centrifugal fan after no spiral case according to claim 1, which is characterized in that the balancing patch and shroud and after
By the series of holes rivet interlacement, the diameter of series of holes and the diameter of rivet match disk.
5. to centrifugal fan after no spiral case according to claim 1, which is characterized in that the air inlet inlet setting
Bending steady flow segment.
6. to centrifugal fan after no spiral case according to claim 5, which is characterized in that the bending steady flow segment is by continuous
Two circular platform type cone section compositions, the ratio between the axial height and air inlet axial direction total height of steady flow segment are as follows: 0.125~
0.225。
7. to centrifugal fan after no spiral case according to claim 1, which is characterized in that at the shroud and rear dish external diameter
Outside flanging section is set.
8. to centrifugal fan after no spiral case according to claim 1, which is characterized in that the outer diameter of the blade is less than institute
State the outer diameter of shroud and hub disk.
9. to centrifugal fan after no spiral case according to claim 1, which is characterized in that the inlet of the shroud is arranged
Direct tube section.
10. using any one of claim 1-9 without the emphasis method corrected after spiral case to the dynamic balance of impeller of centrifugal fan,
It is characterised by comprising:
By dynamic balance calibration, determine that dynamic balance of impeller needs the weight m of the position N aggravated and the balancing patch for needing to aggravate；
If N is located in the series of apertures, add weight is the balancing patch of m on the hole；
If N is not in the series of apertures, the adjacent hole in the left and right that the weight m of balancing patch is decomposed the position, respectively m1With
m2, add the balancing patch of corresponding weight respectively on two hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910287921.3A CN109973410A (en) | 2019-04-11 | 2019-04-11 | A kind of no spiral case centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910287921.3A CN109973410A (en) | 2019-04-11 | 2019-04-11 | A kind of no spiral case centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109973410A true CN109973410A (en) | 2019-07-05 |
Family
ID=67084103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910287921.3A Pending CN109973410A (en) | 2019-04-11 | 2019-04-11 | A kind of no spiral case centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109973410A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552911A (en) * | 2019-10-12 | 2019-12-10 | 浙江科贸智能机电股份有限公司 | air inlet of centrifugal ventilator |
| CN111350690A (en) * | 2020-03-06 | 2020-06-30 | 苏州工业园区星德胜电机有限公司 | High-speed impeller |
| CN112253536A (en) * | 2020-10-30 | 2021-01-22 | 浙江科贸智能机电股份有限公司 | Centrifugal impeller and ventilator thereof |
| CN113175443A (en) * | 2021-06-01 | 2021-07-27 | 雷勃电气(嘉兴)有限公司 | Efficient low-noise three-dimensional flow impeller of backward centrifugal fan without volute |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536857A (en) * | 2010-12-13 | 2012-07-04 | 洛阳北玻台信风机技术有限责任公司 | Cooling fan for traction converter of high-speed electric locomotive |
| CN202707603U (en) * | 2012-07-18 | 2013-01-30 | 上海宝钢工业技术服务有限公司 | Centrifugal fan impeller structure convenient for installing balance block |
| CN203130545U (en) * | 2013-01-07 | 2013-08-14 | 洛阳北玻台信风机技术有限责任公司 | Novel non-volute draught fan |
| CN203335470U (en) * | 2013-05-23 | 2013-12-11 | 浙江大学 | High-efficiency centrifugal fan without volute |
| CN207278567U (en) * | 2017-09-14 | 2018-04-27 | 常州祥明智能动力股份有限公司 | A kind of centrifugal blower fan blade wheel |
| CN109404305A (en) * | 2018-12-26 | 2019-03-01 | 浙江科贸智能机电股份有限公司 | A kind of bionic blade is without spiral case centrifugal fan |
| CN109441876A (en) * | 2018-12-26 | 2019-03-08 | 浙江科贸智能机电股份有限公司 | To centrifugal fan after a kind of no spiral case |
| CN210068512U (en) * | 2019-04-11 | 2020-02-14 | 浙江科贸智能机电股份有限公司 | No spiral case centrifugal fan |
-
2019
- 2019-04-11 CN CN201910287921.3A patent/CN109973410A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536857A (en) * | 2010-12-13 | 2012-07-04 | 洛阳北玻台信风机技术有限责任公司 | Cooling fan for traction converter of high-speed electric locomotive |
| CN202707603U (en) * | 2012-07-18 | 2013-01-30 | 上海宝钢工业技术服务有限公司 | Centrifugal fan impeller structure convenient for installing balance block |
| CN203130545U (en) * | 2013-01-07 | 2013-08-14 | 洛阳北玻台信风机技术有限责任公司 | Novel non-volute draught fan |
| CN203335470U (en) * | 2013-05-23 | 2013-12-11 | 浙江大学 | High-efficiency centrifugal fan without volute |
| CN207278567U (en) * | 2017-09-14 | 2018-04-27 | 常州祥明智能动力股份有限公司 | A kind of centrifugal blower fan blade wheel |
| CN109404305A (en) * | 2018-12-26 | 2019-03-01 | 浙江科贸智能机电股份有限公司 | A kind of bionic blade is without spiral case centrifugal fan |
| CN109441876A (en) * | 2018-12-26 | 2019-03-08 | 浙江科贸智能机电股份有限公司 | To centrifugal fan after a kind of no spiral case |
| CN210068512U (en) * | 2019-04-11 | 2020-02-14 | 浙江科贸智能机电股份有限公司 | No spiral case centrifugal fan |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552911A (en) * | 2019-10-12 | 2019-12-10 | 浙江科贸智能机电股份有限公司 | air inlet of centrifugal ventilator |
| CN111350690A (en) * | 2020-03-06 | 2020-06-30 | 苏州工业园区星德胜电机有限公司 | High-speed impeller |
| CN112253536A (en) * | 2020-10-30 | 2021-01-22 | 浙江科贸智能机电股份有限公司 | Centrifugal impeller and ventilator thereof |
| CN113175443A (en) * | 2021-06-01 | 2021-07-27 | 雷勃电气(嘉兴)有限公司 | Efficient low-noise three-dimensional flow impeller of backward centrifugal fan without volute |
| CN113175443B (en) * | 2021-06-01 | 2023-01-10 | 雷勃电气(嘉兴)有限公司 | Efficient low-noise three-dimensional flow impeller of backward centrifugal fan without volute |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109973410A (en) | A kind of no spiral case centrifugal fan | |
| KR101990108B1 (en) | A cooling fan and seat cooling system having the same | |
| CN110513304B (en) | Centrifugal fan and dust collector | |
| KR20130058605A (en) | Axial-flow fan | |
| EP2885502B1 (en) | Blower motor assembly having air directing surface | |
| WO2020052553A1 (en) | Fan and respirator having same | |
| CN201679745U (en) | Low-noise axial flow fan for cooling air conditioner | |
| KR20210114300A (en) | Air circulator | |
| CN107956721A (en) | Multiatage axial flow ventilation blower | |
| CN104454572B (en) | Single inhalation type centrifugal blower | |
| CN104329271B (en) | Fan and air conditioner with same | |
| CN113280403B (en) | Fan and air conditioner | |
| CN109404305B (en) | Bionic blade volute-free centrifugal ventilator | |
| US7179053B2 (en) | Air-blowing apparatus of cleaner | |
| CN105090122A (en) | Centrifugal fan and vaneless diffuser thereof | |
| EP3211247B1 (en) | Diagonal flow fan | |
| CN210068512U (en) | No spiral case centrifugal fan | |
| WO2020082913A1 (en) | Centrifugal fan blade assembly, centrifugal fan, and air conditioner | |
| CN104389815B (en) | Centrifugal fan for motor with high efficiency, low noise and ultrahigh specific speed | |
| CN207420962U (en) | A kind of aerofoil fan and air-conditioner outdoor unit for air-conditioner outdoor unit | |
| CN210240033U (en) | Axial flow fan with stable airflow | |
| CN208935011U (en) | Centrifugal fan blade, centrifugal fan and air conditioner | |
| CN210118279U (en) | Fan blade, fan assembly, air duct component and air conditioner | |
| CN204200609U (en) | Fan and air conditioner with same | |
| KR20210108675A (en) | Air circulation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |