CN203926071U - A kind of blade reversibility external rotor axial-flow fan - Google Patents
A kind of blade reversibility external rotor axial-flow fan Download PDFInfo
- Publication number
- CN203926071U CN203926071U CN201420299712.3U CN201420299712U CN203926071U CN 203926071 U CN203926071 U CN 203926071U CN 201420299712 U CN201420299712 U CN 201420299712U CN 203926071 U CN203926071 U CN 203926071U
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- China
- Prior art keywords
- blade
- external rotor
- wheel hub
- reversibility
- place
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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.)
- Expired - Lifetime
Links
- 230000002441 reversible effect Effects 0.000 claims abstract description 8
- 230000005484 gravity Effects 0.000 claims abstract description 4
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of blade reversibility external rotor axial-flow fan, comprise external rotor and stator two large divisions, wherein external rotor is made up of blade and wheel hub, electric machine built-in is in the wheel hub of external rotor, wheel hub is connected with motor by rotating shaft, has reversible blade along being circumferentially welded on equably on wheel hub; Described reversible blade that has is on all four with respect to the Geometry edge of the center of gravity line blade of blade, and before and after blade, the span of the maximum camber f/b of line style is: 0.2<f/b<04; Blade has distortion character, i.e. the established angle Φ difference at the different primitive levels of blade place, and in the established angle maximum at blade root place.The beneficial effects of the utility model are: change by the shape to blade, blade geometry edge is complete has similarly ensured no matter blower fan is forward or reversion, and the aeroperformance of blower fan is consistent completely, at the bidirectional ventilated workplace particularly suitable of needs.
Description
Technical field
The utility model relates to a kind of axial-flow blower, and more specifically, it relates to a kind of blade reversibility external rotor axial-flow fan.
Background technique
External rotor axial-flow fan is easy to use, cost is low, efficiency is high, is widely used in civilian and commercial ventilation refrigerating field.For common external rotor axial-flow fan, the performance when design of its aerodynamic parameter is often just considered that blower fan is unidirectional and ventilated, in the time that workplace needs inverted ventilation, its ventilation is often not and when forward ventilates 1/2 of air quantity.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, and a kind of blade reversibility external rotor axial-flow fan rational in infrastructure is provided.
The purpose of this utility model is achieved through the following technical solutions.This blade reversibility external rotor axial-flow fan, comprise external rotor and stator two large divisions, wherein external rotor is made up of blade and wheel hub, and electric machine built-in is in the wheel hub of external rotor, wheel hub is connected with motor by rotating shaft, has reversible blade along being circumferentially welded on equably on wheel hub; Described reversible blade that has is on all four with respect to the Geometry edge of the center of gravity line blade of blade, and before and after blade, the span of the maximum camber f/b of line style is: 0.2<f/b<04; Blade has distortion character, i.e. the established angle Φ difference at the different primitive levels of blade place, and in the established angle maximum at blade root place.
As preferably: described blade is provided with the distortion of several angle from blade root to leaf top place, and degreeof tortuosity is in blade root place maximum.
The beneficial effects of the utility model are: change by the shape to blade, blade geometry edge is complete has similarly ensured no matter blower fan is forward or reversion, and the aeroperformance of blower fan is consistent completely, at the bidirectional ventilated workplace particularly suitable of needs.In order to reduce the air-flow angle of attack, the each section of blade is worked under the best air-flow angle of attack, blade is realized to the distortion of several angle from blade root to leaf top place, and degreeof tortuosity is in blade root place maximum, it is to realize the inevitable requirement of the efficient operation of blower fan that blade has distortion character.
Brief description of the drawings
Fig. 1 is outer rotor blower fan structural drawing;
Fig. 2 is blade section line chart;
Fig. 3 is blade primitive level established angle Φ schematic diagram;
Description of reference numerals: blade 1, wheel hub 2, external rotor 3, motor 4, stator 5.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.Although the utility model is described in connection with preferred embodiment, should know, do not represent that the utility model is limited in described embodiment.On the contrary, the utility model is by alternative, modified model and the equivalent contained in the scope of the present utility model that can be included in attached claims restriction.
As shown in Figure 1 to Figure 3, the blade 1 reversibility external rotor axial-flow fan of the present embodiment, comprise external rotor 3 and stator 5 two large divisions, wherein external rotor 4 is made up of blade 1 and wheel hub 2, stator 5 is made up of motor 4 and miscellaneous part, motor 4 is built in the wheel hub 2 of external rotor 3, and wheel hub 2 is connected with motor 4 by rotating shaft, has reversible blade 1 along being circumferentially welded on equably on wheel hub 2.
Described reversible blade 1 that has has following characteristics: be 1) on all four with respect to the Geometry edge of the center of gravity line blade of blade 1, the span of the maximum camber f/b of blade 1 front and back line style is: 0.2<f/b<04.2) blade 1 has distortion character, i.e. the established angle Φ difference at the different primitive level of blade 1 place, and in the established angle maximum at blade root place.
Geometry edge is complete has similarly ensured no matter blower fan is forward or reversion, and the aeroperformance of blower fan is consistent completely, at the bidirectional ventilated workplace particularly suitable of needs.
In order to reduce the air-flow angle of attack, the each section of blade 1 is worked under the best air-flow angle of attack, blade 1 is realized to the distortion of several angle from blade root to leaf top place, and degreeof tortuosity is in blade root place maximum, it is to realize the inevitable requirement of the efficient operation of blower fan that blade 1 has distortion character, the utility model for applicable object be external rotor axial-flow fan, the diameter of outer rotor blower fan is 250mm, 300mm, 350mm, 400mm, 420mm, 450mm, 500mm, 550mm, 600mm, 630mm etc.
Claims (2)
1. a blade reversibility external rotor axial-flow fan, it is characterized in that: comprise external rotor (3) and stator (5) two large divisions, wherein external rotor (3) is made up of blade (1) and wheel hub (2), it is characterized in that: motor (4) is built in the wheel hub (2) of external rotor (3), wheel hub (2) is connected with motor (4) by rotating shaft, has reversible blade (1) along being circumferentially welded on equably on wheel hub (2); The described reversible blade (1) that has is on all four with respect to the Geometry edge of the center of gravity line blade (1) of blade (1), and before and after blade (1), the span of the maximum camber f/b of line style is: 0.2<f/b<04; Blade (1) has distortion character, i.e. the established angle Φ difference at the different primitive level of blade (1) place, and in the established angle maximum at blade root place.
2. blade reversibility external rotor axial-flow fan according to claim 1, is characterized in that: described blade (1) is provided with the distortion of several angle from blade root to leaf top place, and degreeof tortuosity is in blade root place maximum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420299712.3U CN203926071U (en) | 2014-06-06 | 2014-06-06 | A kind of blade reversibility external rotor axial-flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420299712.3U CN203926071U (en) | 2014-06-06 | 2014-06-06 | A kind of blade reversibility external rotor axial-flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926071U true CN203926071U (en) | 2014-11-05 |
Family
ID=51821890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420299712.3U Expired - Lifetime CN203926071U (en) | 2014-06-06 | 2014-06-06 | A kind of blade reversibility external rotor axial-flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203926071U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107850036A (en) * | 2015-03-20 | 2018-03-27 | 株式会社铃诗苑 | Propeller rotor |
| CN107882772A (en) * | 2016-09-29 | 2018-04-06 | 山洋电气株式会社 | Reversible blowing fan |
| CN110594885A (en) * | 2018-05-24 | 2019-12-20 | 湖南匡为科技有限公司 | Air purifying and deodorizing device |
-
2014
- 2014-06-06 CN CN201420299712.3U patent/CN203926071U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107850036A (en) * | 2015-03-20 | 2018-03-27 | 株式会社铃诗苑 | Propeller rotor |
| CN107882772A (en) * | 2016-09-29 | 2018-04-06 | 山洋电气株式会社 | Reversible blowing fan |
| CN107882772B (en) * | 2016-09-29 | 2020-12-08 | 山洋电气株式会社 | Reversible blowing fan |
| CN110594885A (en) * | 2018-05-24 | 2019-12-20 | 湖南匡为科技有限公司 | Air purifying and deodorizing device |
| CN110594885B (en) * | 2018-05-24 | 2021-06-04 | 湖南匡为科技有限公司 | Air purifying and deodorizing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141105 |
|
| CX01 | Expiry of patent term |