CN107747564A - A kind of centrifugal blower - Google Patents
A kind of centrifugal blower Download PDFInfo
- Publication number
- CN107747564A CN107747564A CN201710989366.XA CN201710989366A CN107747564A CN 107747564 A CN107747564 A CN 107747564A CN 201710989366 A CN201710989366 A CN 201710989366A CN 107747564 A CN107747564 A CN 107747564A
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- Prior art keywords
- impeller
- blade
- centrifugal blower
- front shroud
- air inlet
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- 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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- 238000007493 shaping process Methods 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 29
- 238000003801 milling Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 33
- 238000013461 design Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 238000005119 centrifugation Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- 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
- F04D29/66—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
- F04D29/663—Sound attenuation
-
- 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 present invention relates to a kind of centrifugal blower, including casing, air inlet, blade, front shroud of impeller, back shroud of impeller and motor, wherein, front shroud of impeller separates with blade, the inside edge of front shroud of impeller is connected with air inlet, outer ledge is connected with the cylinder being fixed on air inlet, and it is smooth surface and the interior hollow cylinder gradually increased to both ends middle without leave that front shroud of impeller, air inlet and cylinder, which form an inwall,.The present invention separates front shroud of impeller with blade, reduces difficulty of processing, integrally casting shaping front shroud of impeller, air inlet and cylinder, both air inlet component had been reduced, and it can play a part of anti-vortex ring again, reduce large scale whirlpool in casing, fan efficiency is improved, reduces fan noise.The centrifugal blower of the present invention, there is the characteristics of low processing simple, low processing cost, matching requirements and good integral strength, while have rotating speed high and the characteristics of efficiency high, rotating speed >=15000rpm, efficiency >=64%.
Description
Technical field
The invention belongs to universal machine field of ventilation equipment, is related to a kind of centrifugal blower.
Background technology
Centrifugal blower is the pressure energy and kinetic energy that gas is converted to using the mechanical energy of draught fan impeller rotation, and gas is defeated
See off, gas is rotated through impeller and produces air energy along the streamlined air inlet air inlet through hollow shaft of blower fan, along screw type housing by gas
Body radially exports, then is sent out from shell air outlet.In centrifugal blower, gas is from axially into impeller, when gas flows through impeller
It is radially redirected, subsequently into diffuser.In diffuser, the gas and changing flow direction and increase of conduit section area makes
Flow slowing down, this decelerating effect convert kinetic energy into pressure energy.Pressure, which increases, to be occurred mainly in impeller, secondly occurs expanding
Press through journey.
Centrifugal blower essential structure is as shown in figure 1, including casing, air inlet, blade, front shroud of impeller, back shroud of impeller
And motor, in the manufacture of existing Small Centrifugal Fan, blade, front shroud of impeller and back shroud of impeller are often integrally machined, its
Complicated integral structure, difficulty of processing is big, and generally requiring five axles and above machining center could process, and processing cost is higher, and by
Material properties are limited, and bulk strength is poor to be only capable of meeting the slow-speed of revolution and the requirement of low-pressure blower fan；And it is high for matching requirements,
Current collector and impeller assembling gap cross conference and cause pressure leakage, it is difficult to ensure fan outlet pressure.
Therefore, a kind of processing of exploitation is simple, cost is cheap, matching requirements are low and the centrifugal blower of good integral strength is great existing
Sincere justice.
The content of the invention
The purpose of the present invention be overcome that prior art centrifugal blower difficulty of processing is big, processing cost is low, matching requirements are high and
The defects of requirement of bulk strength difference, there is provided one kind processing is simple, cost is cheap, matching requirements are low, good integral strength and rotating speed
The higher centrifugal blower with efficiency.
To achieve the above object, the present invention is solved by the following technical programs：
A kind of centrifugal blower, including casing, air inlet, blade, front shroud of impeller, back shroud of impeller and motor, the leaf
Take turns back shroud for it is circular and with the output axis connection of motor, the blade circle distribution is after the impeller on cover plate；Before the impeller
Cover plate separates with blade, simplifies the structure of prophyll piece integral piece, reduces difficulty of processing, reduces processing cost；And by
In the reduction of difficulty of processing, available material is more, is processed from the more excellent material of intensity, can lift bulk strength.
As preferable technical scheme：
A kind of centrifugal blower as described above, the inside edge of the front shroud of impeller are connected with air inlet, outer ledge
Be connected with the cylinder being fixed on air inlet, the front shroud of impeller, air inlet and cylinder form an inwall be smooth surface and
The hollow cylinder that inside centre gradually increases to both ends without leave.
The distance between a kind of centrifugal blower, the front shroud of impeller two faces relative with blade as described above≤
The distance between 1mm, front shroud of impeller two faces relative with blade is usually to be determined according to machining accuracy, smaller in theory
It is better, apart from it is excessive easily cause leaf top leakage loss it is larger, experiment shows, distance often increase 1mm, pressure about reduces by 5%.
A kind of centrifugal blower as described above, the ring of blade is provided around on the front shroud of impeller face relative with blade
Shape is raised, and the annular projection can substantially reduce leaf top leakage loss, and raised shape is not limited to ring-type or before the impeller
Multiple projections of circumference uniform distribution on cover plate, as long as raised position, which can play, reduces the leakage loss effect of leaf top.
A kind of centrifugal blower as described above, the annular projection are 0mm along itself axial direction and the spacing of blade, and ring-type is convex
Play outer rim and just wrap up vane nose, you can to reduce the leakage loss of leaf top, and do not stop that gas flows；The annular projection
It is 1~2mm along itself spacing radially with blade, the spacing set conference to cause certain atmospheric pressure lost, set too small meeting
Cause process and assemble difficulty excessive, influence yields.
A kind of centrifugal blower as described above, the annular projection, front shroud of impeller, air inlet and cylinder integrally casting into
Type is welded with iron plate；The air inlet is cone arc, can effectively reduce flow losses.
A kind of centrifugal blower as described above, the back side panel of the casing are bolted to connection the installing plate in motor
On, the output axis connection of the back shroud of impeller and motor；It is further fixed on adding on the blade face relative with front shroud of impeller
Qiang Huan, with the intensity of reinforced blade and back shroud of impeller, the outer ledge of the reinforcing ring intersects with the outer ledge of blade, its
Middle outer ledge refers to the central axis apart from motor output shaft apart from farthest edge.
A kind of centrifugal blower as described above, the reinforcing ring is laminated structure, and the width of the reinforcing ring is 2~5mm,
It is excessive to strengthen ring width, can stop that gas flows, the too small then stiffening effect of width is bad.
A kind of centrifugal blower as described above, the reinforcing ring, blade and back shroud of impeller entirety milling shaping, the leaf
Piece is circular arc or airfoil type, and circular arc type vane efficiency is general, but processing is relatively simple, and wing blades efficiency is of a relatively high,
But processing is more complicated.
A kind of centrifugal blower as described above, the rotating speed of centrifugal blower are >=15000rpm, the efficiency of centrifugal blower >=
64%.
Invention mechanism：
The present invention by air inlet, impeller cover and cylinder integration processing by realizing front shroud of impeller and blade point
From, on the one hand, reduce air inlet component, anti-vortex ring can be played a part of again, after gas outflow impeller enters spiral case, along
Spiral case diffusion, which slows down, to be flowed, and is improved flow field dynamics, is reduced vortex, reduce large scale whirlpool in casing, improves wind
Engine efficiency, overcomes in the prior art that area of space is larger between centrifugal blower inner impeller front shroud and case front, gas stream
Vortex can be produced in this space by going out after impeller, cause energy loss, the problem of reducing fan efficiency, on the other hand, due to leaf
Impeller blade and back shroud of impeller are integrally machined, and without front shroud of impeller, stress suffered by blower fan greatly reduces, and rotation speed of fan can carry
Height can effectively improve blower pressure to more than 15000rpm.In addition, the front shroud of impeller upper end of the present invention is convex provided with a ring-type
Rise, it is possible to reduce the leakage loss of leaf top.
Beneficial effect：
(1) a kind of centrifugal blower of the invention, front shroud of impeller is separated with blade, is significantly reduced difficulty of processing and is added
Work cost, front shroud of impeller, air inlet and cylinder integrally casting shaping, air inlet component was both reduced, and it can be played again
The effect of anti-vortex ring, large scale whirlpool in casing is reduced, improve fan efficiency, reduce fan noise；
(2) a kind of centrifugal blower of the invention, blade and back shroud of impeller integrally casting shaping, stress suffered by blower fan is significantly
Reduction can meet the high-revolving requirement of blower fan, improve blower pressure；
(3) a kind of centrifugal blower of the invention, has that simple processing, low processing cost, matching requirements is low, bulk strength
High-revolving the characteristics of requiring can be met well.
Brief description of the drawings
Fig. 1 is the structural representation of the centrifugal blower of prior art；
Fig. 2 is a kind of structural representation of the centrifugal blower of the present invention；
Fig. 3 is the partial enlarged drawing of A in Fig. 2；
Fig. 4 is another structural representation of the centrifugal blower of the present invention；
Fig. 5 is the local partial enlarged drawing of A in Fig. 4；
Fig. 6 is the structural representation of the hollow cylinder of front shroud of impeller, air inlet and the cylinder composition of the present invention；
Wherein 1- casings, 2- air inlets, 3- blades, 4- motors, 5- front shroud of impeller, 6- back shroud of impeller, 7- reinforcing rings,
8- cylinders, 9- annular projections.
Embodiment
The invention will be further elucidated with reference to specific embodiments.It should be understood that these embodiments are merely to illustrate this hair
Bright rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, art technology
Personnel can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Fixed scope.
Embodiment 1
A kind of centrifugal blower, as shown in Fig. 2 including casing 1, air inlet 2, blade 3, front shroud of impeller 5, back shroud of impeller
6 and motor 4.
Casing 1 is the cored screw shape unsymmetric structure of a bottom surface opening, and the back side panel of casing 1 is that not opening face passes through spiral shell
Bolt is fixedly connected on the installing plate of motor 4, and aperture position correspondingly bores arc air inlet 2, air inlet 2 and annular impeller front shroud
5 connections, front shroud of impeller 5 are completely covered the impeller that blade 3 is formed, impeller diameter 100mm, and blade 3 is circular arc, impeller
Front shroud 5 and blade 3 are that the distance between isolating construction, two faces relative with blade 3 of front shroud of impeller 5 is 1mm, before impeller
The inside edge of cover plate 5 is connected with air inlet 2, and outer ledge is connected with the cylinder 8 being fixed on air inlet 2, front shroud of impeller
5th, it is smooth surface and interior hollow cylinder such as Fig. 6 gradually increased to both ends middle without leave that air inlet 2 and cylinder 8, which form an inwall,
It is shown, as shown in figure 3, being provided around the annular projection 9 of blade, annular projection 9 on the face relative with blade 3 of front shroud of impeller 5
It is 0mm with the spacing of blade vertically, annular projection 9 is radially 1mm with the spacing of blade, and the opposite side of blade 3 is disposed with leaf
Back shroud 6 is taken turns, the center of back shroud of impeller 6 is provided with through hole and the output axis connection with motor 4.
The 6 overall milling of blade 3 and back shroud of impeller, annular projection 9, front shroud of impeller 5, air inlet 2 and the one casting of cylinder 8
Type is caused, the back side panel of casing 1 is bolted to connection on the installing plate of motor 4.
The rotating speed of the centrifugal blower is 15050rpm, and the efficiency of centrifugal blower is 70.2%.Empirical tests, centrifugation of the invention
Blower fan difficulty of processing is low, low processing cost, and bulk strength is high, and reasonable in design, matching requirements are low.
Embodiment 2
A kind of centrifugal blower, as shown in figure 4, its basic structure is same as Example 1, difference is it in blade 3 and leaf
Wheel front shroud 5 is fixed with sheet reinforcing ring 7 on relative face, as shown in figure 5, the outside of the outer ledge of reinforcing ring 7 and blade 3
Edge intersects, and wherein outer ledge refers to the central axis apart from motor output shaft apart from farthest edge, the width of reinforcing ring 7
For 5mm, the 6 overall milling of reinforcing ring 7, blade 3 and back shroud of impeller.
The rotating speed of the centrifugal blower is 20000rpm, and the efficiency of centrifugal blower is 65%.Compared with Example 1, this implementation
Example enhances the bulk strength of centrifugal blower by increasing reinforcing ring.
Empirical tests, centrifugal blower difficulty of processing of the invention is low, low processing cost, and bulk strength is high, reasonable in design, dress
With requiring low.
Embodiment 3
A kind of centrifugal blower, its basic structure is same as Example 1, and difference is that blade is airfoil type, front shroud of impeller
The distance between two faces relative with blade are 0.8mm, and annular projection is 0mm with the spacing of blade vertically, annular projection
It is radially 2mm with the spacing of blade.
The rotating speed of the centrifugal blower is 16000rpm, and the efficiency of centrifugal blower is 71%.Empirical tests, centrifugation wind of the invention
It is low to machine difficulty, low processing cost, bulk strength is high, and reasonable in design, matching requirements are low.
Embodiment 4
A kind of centrifugal blower, its basic structure is same as Example 1, and difference is two relative with blade of front shroud of impeller
The distance between individual face is 0.9mm, and annular projection is 0mm with the spacing of blade vertically, annular projection radially with blade
Spacing is 1.5mm.
The rotating speed of the centrifugal blower is 15500rpm, and the efficiency of centrifugal blower is 70.5%.Empirical tests, centrifugation of the invention
Blower fan difficulty of processing is low, low processing cost, and bulk strength is high, and reasonable in design, matching requirements are low.
Embodiment 5
A kind of centrifugal blower, its basic structure is same as Example 1, and difference is that blade is airfoil type, front shroud of impeller
The distance between two faces relative with blade are 0.75mm, and annular projection is 0mm with the spacing of blade vertically, annular projection
It is radially 1.2mm with the spacing of blade.
The rotating speed of the centrifugal blower is 16200rpm, and the efficiency of centrifugal blower is 72%.Empirical tests, centrifugation wind of the invention
It is low to machine difficulty, low processing cost, bulk strength is high, and reasonable in design, matching requirements are low.
Embodiment 6
A kind of centrifugal blower, its basic structure is same as Example 3, and difference is that it is relative with front shroud of impeller in blade
Face on be fixed with sheet reinforcing ring, the outer ledge of reinforcing ring intersects with the outer ledge of blade, the outer ledge of reinforcing ring
Refer to central axis apart from motor output shaft apart from farthest edge, the width of reinforcing ring is 2mm, reinforcing ring, blade and leaf
Take turns back shroud entirety milling shaping.
The rotating speed of the centrifugal blower is 16500rpm, and the efficiency of centrifugal blower is 68%.Empirical tests, centrifugation wind of the invention
It is low to machine difficulty, low processing cost, bulk strength is high, and reasonable in design, matching requirements are low.
Embodiment 7
A kind of centrifugal blower, its basic structure is same as Example 4, and difference is that it is relative with front shroud of impeller in blade
Face on be fixed with sheet reinforcing ring, the outer ledge of reinforcing ring intersects with the outer ledge of blade, the outer ledge of reinforcing ring
Refer to central axis apart from motor output shaft apart from farthest edge, the width of reinforcing ring is 3.5mm, reinforcing ring, blade and
The milling of back shroud of impeller entirety is molded.
The rotating speed of the centrifugal blower is 15900rpm, and the efficiency of centrifugal blower is 67.6%.Empirical tests, centrifugation of the invention
Blower fan difficulty of processing is low, low processing cost, and bulk strength is high, and reasonable in design, matching requirements are low.
Embodiment 8
A kind of centrifugal blower, its basic structure is same as Example 5, and difference is that it is relative with front shroud of impeller in blade
Face on be fixed with sheet reinforcing ring, the outer ledge of reinforcing ring intersects with the outer ledge of blade, the outer ledge of reinforcing ring
Refer to central axis apart from motor output shaft apart from farthest edge, the width of reinforcing ring is 4mm, reinforcing ring, blade and leaf
Take turns back shroud entirety milling shaping.
The rotating speed of the centrifugal blower is 16700rpm, and the efficiency of centrifugal blower is 68.5%.Empirical tests, centrifugation of the invention
Blower fan difficulty of processing is low, low processing cost, and bulk strength is high, and reasonable in design, matching requirements are low.
Embodiment 9
A kind of centrifugal blower, its basic structure is same as Example 1, and difference is it, and cover plate is relative with impeller before the impeller
Face on there is no annular projection, front shroud of impeller, air inlet and cylinder integrally casting shaping.
The rotating speed of the centrifugal blower is 15000rpm, and the efficiency of centrifugal blower is 70%.Empirical tests, centrifugation wind of the invention
It is low to machine difficulty, low processing cost, bulk strength is high, and reasonable in design, matching requirements are low.
Embodiment 10
A kind of centrifugal blower, its basic structure is same as Example 2, and difference is it, and cover plate is relative with impeller before the impeller
Face on there is no annular projection, front shroud of impeller, air inlet and cylinder integrally casting shaping.
The rotating speed of the centrifugal blower is 17800rpm, and the efficiency of centrifugal blower is 64%.Empirical tests, centrifugation wind of the invention
It is low to machine difficulty, low processing cost, bulk strength is high, and reasonable in design, matching requirements are low.
Claims (10)
1. a kind of centrifugal blower, including casing, air inlet, blade, front shroud of impeller, back shroud of impeller and motor, the impeller
Back shroud for it is circular and with the output axis connection of motor, the blade circle distribution is after the impeller on cover plate, it is characterized in that：It is described
Front shroud of impeller separates with blade.
2. a kind of centrifugal blower according to claim 1, it is characterised in that the inside edge of the front shroud of impeller is with entering
Air port is connected, and outer ledge is connected with the cylinder being fixed on air inlet, and the front shroud of impeller, air inlet and cylinder form one
Inwall is smooth surface and the interior hollow cylinder gradually increased to both ends middle without leave.
A kind of 3. centrifugal blower according to claim 2, it is characterised in that the front shroud of impeller it is relative with blade two
The distance between individual face≤1mm.
A kind of 4. centrifugal blower according to claim 3, it is characterised in that the front shroud of impeller face relative with blade
On be provided around the annular projection of blade.
5. a kind of centrifugal blower according to claim 4, it is characterised in that the annular projection is vertically between blade
Away from for 0mm；The annular projection is radially 1~2mm with the spacing of blade.
6. a kind of centrifugal blower according to claim 5, it is characterised in that the annular projection, front shroud of impeller, air intake
Mouth and cylinder integrally casting shaping are welded with iron plate.
7. a kind of centrifugal blower according to claim 1, it is characterised in that the back side panel of the casing is bolted
It is connected on the installing plate of motor, the output axis connection of the back shroud of impeller and motor；The blade and front shroud of impeller phase
To face on be further fixed on reinforcing ring, the outer ledge of the reinforcing ring intersects with the outer ledge of blade, wherein outer ledge
Refer to the central axis apart from motor output shaft apart from farthest edge.
8. a kind of centrifugal blower according to claim 7, it is characterised in that the reinforcing ring is laminated structure, described to add
The width of strong ring is 2~5mm.
9. a kind of centrifugal blower according to claim 8, it is characterised in that the reinforcing ring, blade and back shroud of impeller
Overall milling, the blade are circular arc template or airfoil type.
A kind of 10. centrifugal blower according to claim 9, it is characterised in that rotating speed >=15000rpm of centrifugal blower, from
Efficiency >=64% of heart blower fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710989366.XA CN107747564A (en) | 2017-10-23 | 2017-10-23 | A kind of centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710989366.XA CN107747564A (en) | 2017-10-23 | 2017-10-23 | A kind of centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107747564A true CN107747564A (en) | 2018-03-02 |
Family
ID=61254062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710989366.XA Withdrawn CN107747564A (en) | 2017-10-23 | 2017-10-23 | A kind of centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107747564A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611358A (en) * | 2019-01-25 | 2019-04-12 | 武汉新宜搏科技有限公司 | A kind of low noise centrifugal fan |
| CN114352573A (en) * | 2022-01-04 | 2022-04-15 | 泛仕达机电股份有限公司 | Compact centrifugal fan |
-
2017
- 2017-10-23 CN CN201710989366.XA patent/CN107747564A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611358A (en) * | 2019-01-25 | 2019-04-12 | 武汉新宜搏科技有限公司 | A kind of low noise centrifugal fan |
| CN109611358B (en) * | 2019-01-25 | 2020-07-07 | 武汉新宜搏科技有限公司 | Low-noise centrifugal ventilator |
| CN114352573A (en) * | 2022-01-04 | 2022-04-15 | 泛仕达机电股份有限公司 | Compact centrifugal fan |
| CN114352573B (en) * | 2022-01-04 | 2024-04-02 | 泛仕达机电股份有限公司 | Compact centrifugal fan |
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Address after: 201818 2, 1501, 1519, 1533, Chengliu Middle Road, Jiading District, Shanghai. Applicant after: SHANGHAI RICHEN ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 201818 2, 1501, 1519, 1533, Chengliu Middle Road, Jiading District, Shanghai. Applicant before: SHANGHAI RICHEN CO.,LTD. |
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180302 |