CN209414247U - A kind of centrifugation blade - Google Patents
A kind of centrifugation blade Download PDFInfo
- Publication number
- CN209414247U CN209414247U CN201821625943.3U CN201821625943U CN209414247U CN 209414247 U CN209414247 U CN 209414247U CN 201821625943 U CN201821625943 U CN 201821625943U CN 209414247 U CN209414247 U CN 209414247U
- Authority
- CN
- China
- Prior art keywords
- wind wheel
- blade
- chord length
- arc shaped
- diameter
- 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.)
- Active
Links
Landscapes
- Wind Motors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of centrifugation blades, and including wind wheel and the arc shaped blade being distributed on wind wheel, wherein Φ A is the effective outer diameter of wind wheel, Φ B is spot diameter in wind wheel chord length, and Φ C is wind wheel internal diameter diameter, and a is blade angle, b is blade pressure interfacial angle, X, Y, Z are respectively the chord length endpoint of arc shaped blade (2) pressure face, chord length midpoint, chord length starting point, wherein Φ B=(Φ A+ Φ C)/2,19 ° < a < 26 °, a+19 ° <b < a+21 °, 0.6 </ < 0.8；By the structural improvement to wind wheel blade, distinguished and admirable situation between arc shaped blade is improved, reducing air-flow, there is a phenomenon where separation to block inside runner between arc shaped blade, can reduce the noise of blower, improve fan delivery.
Description
Technical field
The utility model relates to a kind of centrifugation blade, especially one kind can improve wind wheel interior flow field under environment under low pressure,
The novel centrifugal fan blade for reaching low-noise high-efficiency is leaf.
Background technique
The centrifugation blade to work under environment under low pressure, since the gas flowing between blade in runner is unstable, blade
Air is given energy transmission, and this unsteady flow is caused by the period rotation of working-blade, and final air-flow is from blade
End starts to extend to a whole region of air inlet, this process directly affects the outlet air efficiency of fan blade, and often at present
The centrifugation blade seen just because of this reason and cause energy loss.
Summary of the invention
For overcome the deficiencies in the prior art, the utility model provides a kind of centrifugation blade.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of centrifugation blade, including wind wheel and the arc shaped blade being distributed on wind wheel, wherein Φ A is the effective outer diameter of wind wheel,
Φ B is spot diameter in wind wheel chord length, and Φ C is wind wheel internal diameter diameter, and a is blade angle, and b is blade pressure interfacial angle, X, Y, Z
Respectively the chord length endpoint of arc shaped blade (2) pressure face, chord length midpoint, chord length starting point, wherein Φ B=(Φ A+ Φ C)/2,19 ° <
A < 26 °, a+19 ° <b < a+21 °, Z < 0.8 0.6 < X ︵ Y/Y ︵ (X ︵ Y/Y ︵ Z is circular arc XY and circular arc YZ ratio).
As a preference, the protrusion arc portion towards arc shaped blade direction is provided on the wind wheel.
The beneficial effects of the utility model are: improving wind between arc shaped blade by the structural improvement to wind wheel blade
Stream situation, reducing air-flow, there is a phenomenon where separation to block inside runner between arc shaped blade, can reduce the noise of blower, improve
Fan delivery.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is perspective view of the invention；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is working condition contrast schematic diagram of the invention；
Fig. 4 is test result contrast schematic diagram of the invention.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The utility model is further elaborated.For the thorough explanation present invention, some spies can be related in following description
Determine details.And in these no specific details, the invention can still be realized, i.e., the technical staff in fields uses this
These of place describe and state that the others skilled in the art into fields can more effectively introduce their work essence.
Referring to Fig.1, Fig. 2, a kind of centrifugation blade, including wind wheel 1 and the arc shaped blade 2 that is distributed on wind wheel 1, wherein Φ A
For the effective outer diameter of wind wheel, Φ B is spot diameter in wind wheel chord length, and Φ C is wind wheel internal diameter diameter, and a is blade angle, and b is blade
Pressure interfacial angle, X, Y, Z are respectively the chord length endpoint of 2 pressure face of arc shaped blade, chord length midpoint, chord length starting point, wherein Φ B=
/ 2,19 ° < a < 26 ° (Φ A+ Φ C), a+19 ° <b < a+21 °, 0.6 < X ︵ Y/Y ︵ Z < 0.8X ︵ Y/Y ︵ Z is circular arc XY and circular arc
YZ ratio.
Blade inlet angle beta 1A is determined according to the smallest principle of W1, to ensure the stream power loss reduction of Ye Daonei.
Under conditions of entrance angle of attack i=0, it can be obtained from the entrance triangle after blade inlet
It can be obtained by solutionKeep the blade inlet angle beta 1A=of Ye Daonei stream power loss reduction
35.26 ° (referring to " ventilation blower practical technique handbook " 3.12.4)
Leaf compared to traditional strong forward direction, fresh air leaf reasonably reduces inlet blade angle, for reducing at blade inlet
Loss is effective.In addition in the region for changing rotation direction, reasonably adjust leaf road pressure face molded line also has for reducing energy loss
Highly important effect.This is novel leaf since <b value is larger, prewhirl can reasonable function in pressure face entrance, finally show
The air flow direction such as Fig. 3 come.And referring to Fig. 4, the novel leaf primary air in spiral case levels off in the middle part of volute outlet, and conventional leaf
Shape, which is then shown, to level off at the outlet nearly volute tongue face in lower part, it is new it is leaf reached reduce gas shock at volute tongue, reach noise reduction.
It is provided with the protrusion arc portion 3 towards 2 direction of arc shaped blade on the wind wheel 1, not only makes wind wheel 1 firmer, and
And the fan blade after cooperation improvement when rotated can be more stable.
According to above-mentioned principle, the utility model can also be made appropriate changes and modifications to the above embodiments.Therefore,
The utility model is not limited to specific embodiment disclosed and described above, to some modifications and changes of the utility model
It should also be as falling into the protection scope of the claims of the present utility model.
Claims (2)
1. a kind of centrifugation blade, including wind wheel (1) and the arc shaped blade (2) being distributed on wind wheel (1), it is characterised in that: wherein
Φ A is the effective outer diameter of wind wheel, and Φ B is spot diameter in wind wheel chord length, and Φ C is wind wheel internal diameter diameter, and a is blade angle, and b is leaf
Piece pressure interfacial angle, X, Y, Z are respectively the chord length endpoint of arc shaped blade (2) pressure face, chord length midpoint, chord length starting point, wherein Φ B
/ 2,19 ° < a < 26 °=(Φ A+ Φ C), a+19 ° <b < a+21 °,(For circular arc XY and circular arc
YZ ratio).
2. a kind of centrifugation blade according to claim 1, it is characterised in that: be provided on the wind wheel (1) towards arc
The protrusion arc portion (3) in blade (2) direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821625943.3U CN209414247U (en) | 2018-09-30 | 2018-09-30 | A kind of centrifugation blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821625943.3U CN209414247U (en) | 2018-09-30 | 2018-09-30 | A kind of centrifugation blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209414247U true CN209414247U (en) | 2019-09-20 |
Family
ID=67932340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821625943.3U Active CN209414247U (en) | 2018-09-30 | 2018-09-30 | A kind of centrifugation blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209414247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966252A (en) * | 2019-12-04 | 2020-04-07 | 广东顺威精密塑料股份有限公司 | Equal-thickness blade type centrifugal fan blade |
-
2018
- 2018-09-30 CN CN201821625943.3U patent/CN209414247U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966252A (en) * | 2019-12-04 | 2020-04-07 | 广东顺威精密塑料股份有限公司 | Equal-thickness blade type centrifugal fan blade |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107013497A (en) | Return flow ware blade, compressor structure and compressor | |
| CN100460691C (en) | Pressurized centrifugal rear axial-flown fan impeller | |
| CN107120315A (en) | Stator blade, compressor structure and compressor | |
| CN209414247U (en) | A kind of centrifugation blade | |
| CN110005638A (en) | Integral type water conservancy diversion wheel hub structure fan | |
| CN106122092A (en) | A kind of novel blade and use the impeller of this fan blade | |
| CN208804044U (en) | A kind of centrifugal blower with spiral case | |
| CN107975497A (en) | A kind of centrifugal blower volute | |
| CN211623815U (en) | Air exhaust centrifugal impeller | |
| CN110513327A (en) | Diagonal flow fan and household appliance | |
| CN209042569U (en) | Air conditioner indoor unit and air conditioner | |
| CN207420973U (en) | Air conditioner, axial flow blower and its air passage | |
| CN206889355U (en) | Return flow ware blade, compressor structure and compressor | |
| CN206845544U (en) | A kind of centrifugal blower volute | |
| CN207349175U (en) | A kind of novel axial flow fan anti-surge installation | |
| CN110425157B (en) | Efficient gas mixing centrifugal fan | |
| CN210164688U (en) | Air duct volute of wing-shaped volute tongue | |
| CN209026955U (en) | Air conditioner room unit volute tongue and air conditioner room unit | |
| CN209704919U (en) | A kind of outer rotor blower fan fan | |
| CN206957980U (en) | multi-wing centrifugal fan blade | |
| CN207315739U (en) | A kind of preceding volute tongue structure of cross flow fan | |
| CN203671852U (en) | Guide ring, air duct structure and air conditioner indoor cabinet | |
| CN208686633U (en) | A kind of low energy consumption blower | |
| CN203297148U (en) | Through-flow fan for air conditioner capable of effectively improving fan performance | |
| CN206957981U (en) | A kind of multi-wing centrifugal fan blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: QINGDAO SHUNWEI PRECISION PLASTICS CO.,LTD. Assignor: Guangdong Sunwill Precision Plastic Co.,Ltd. Contract record no.: X2023980038059 Denomination of utility model: A centrifugal fan blade Granted publication date: 20190920 License type: Common License Record date: 20230717 Assignee: WUHAN SHUNWEI ELECTRICAL APPLIANCE Co.,Ltd. Assignor: Guangdong Sunwill Precision Plastic Co.,Ltd. Contract record no.: X2023980038057 Denomination of utility model: A centrifugal fan blade Granted publication date: 20190920 License type: Common License Record date: 20230717 |
|
| EE01 | Entry into force of recordation of patent licensing contract |