CN2356177Y - Fan blade - Google Patents
Fan blade Download PDFInfo
- Publication number
- CN2356177Y CN2356177Y CN 98241566 CN98241566U CN2356177Y CN 2356177 Y CN2356177 Y CN 2356177Y CN 98241566 CN98241566 CN 98241566 CN 98241566 U CN98241566 U CN 98241566U CN 2356177 Y CN2356177 Y CN 2356177Y
- Authority
- CN
- China
- Prior art keywords
- blade
- impeller
- fan blade
- impeller portion
- blades
- 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 - Lifetime
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Abstract
The utility model relates to a fan blade having the functions of blade rigidity increase, flow field stabilization and noise reduction. The utility model at least comprises a first blade part and a second blade part, wherein the first blade part is composed of a hub part and a plurality of first blades; the first blades are arranged along a circumferential direction; the inner ends of the first blades are respectively fixed on the outer circumferential face of the hub part; the second blade part is composed of a ring part and a plurality of second blades. The inner circumferential face of the ring part is connected with the outer ends of the first blades; the second blades are arranged along a circumferential direction; the inner ends of the second blades are respectively fixed on the outer circumferential face of the ring part.
Description
The utility model is relevant for a kind of fan blade.
Fig. 1 is shown as a three-dimensional view of commonly using fan blade, and Fig. 2 shows the same plan view of commonly using fan.As Fig. 1 and shown in Figure 2, this one commonly uses fan blade and comprises: hub portion 1, rotate in order to be fixed in running shaft (indicating among the figure); And most blades 2, being individually fixed on the outer circumferential face of hub portion 1 along circumferential array and its inner of hub portion 1, these blades systems arrange in radial mode, use the operational situation of balance fan blade and reduce noise and vibration.
Commonly use in the fan blade in this, blade 2 cutting air when rotation is done the axial flow motion and is caused axial flow field, also causes inevasible radially flow field simultaneously.These radially will cause eddy current in the outer end of each blade T in the flow field, thereby unhappy noise is made us in generation.
Moreover, commonly using the means of fixation of fan blade, is that end within each blade 2 is fixed in hub portion 1, and end T part then is a free end outside each blade 2, the viewpoint of these structures on mechanics is the structure of an overhang, and the rigidity of fan blade reduces along with the increase of length of blade.Therefore, when blade outer end T produced serious eddy current, the disturbance that the relatively poor fan blade 2 of rigidity will be difficult to resist eddy current then was fan blade 2 causes fan blade 2 with eddy current generation resonance phenomenon damage what is more.
In sum, the shortcoming of commonly using fan blade be that blade strength is not enough, blade outer end vortex phenomenon is serious and the flow field than instability etc.
Therefore, for solving foregoing problems, the purpose of this utility model provides a kind of fan blade that increases blade integral rigidity, steady flow condition and reduce noise.
The technical solution of the utility model is:
A kind of fan blade is characterized in that: comprise at least:
The first impeller portion is formed by a hub portion and along circumferential array and inner majority first blade that is individually fixed on the hub portion outer circumferential face; And
The second impeller portion is connected in the ring portion of each first blade outer end of this first impeller portion by an inner peripheral surface, and forms along circumferential array and inner majority second blade that is individually fixed on this ring portion outer circumferential face.
Described fan blade, it is characterized in that: the trilobed wheel portion that more comprises the radial outside that is connected in this second impeller portion is to n impeller portion, (wherein n is the positive integer greater than 2) wherein, this trilobed wheel portion is to each impeller portion of this n impeller portion, all formed by a ring portion and along circumferential array and the inner majority n blade that is individually fixed in this ring portion outer circumferential face, and between this second impeller portion to this n impeller portion, the combination between each internally outer adjacent impeller portion is: the inner peripheral surface than this ring portion of outside impeller portion is fixed in each blade outer end of more inboard impeller portion.
Effect of the present utility model is:
Fan blade of the present utility model, the combination of using most impeller portion is to increase the rigidity of fan blade, and cut apart the flow field by the ring portion between adjacent impeller portion, reduce the influence that eddy current produced of blade outer end, but therefore steady flow condition and reduce the noise that eddy current produces.
Advantage of the present utility model and characteristic by in the detailed description of following preferred embodiment and with reference to graphic when can be clearer, wherein:
Fig. 1 is for showing that one commonly uses the stereogram of fan blade;
Fig. 2 is for being shown in the same plan view of commonly using fan blade among Fig. 1;
Fig. 3 is the three-dimensional view of the utility model first embodiment's fan blade;
Fig. 4 is the plan view of above-mentioned first embodiment's fan blade;
Fig. 5 is the plan view of the utility model second embodiment's fan blade;
Be the embodiment's that highlights this creation characteristic, present embodiment system provides a kind of and the fan blade of commonly using fan same outer diameter as Fig. 2.
The fan blade that will be shown in first embodiment of Fig. 3 and Fig. 4 resolves into two parts, comprises:
The first impeller portion 4 is formed by a hub portion 1 and along circumferential array and inner majority first blade 6 that is individually fixed on hub portion 1 outer circumferential face; And
The second impeller portion 5 is connected in the ring portion 3 of each most first blades 6 outer end of this first impeller portion 4 by an inner peripheral surface, and forms along circumferential array and inner majority second blade 7 that is individually fixed on ring portion 3 outer circumferential faces.
In first embodiment, the fan of commonly using compared to Fig. 1 and Fig. 2, learn that the second impeller portion, 5 more than several second blade, 7 length with free end blade reduce, more end outside the first impeller portion, 4 more than several first blades 6 is fixing with the second impeller portion 5 by ring portion 3, make the rigidity increase of its whole fan blade and increase the ability that it resists vortex disturbance, and then reduce noise.Again, ring portion 3 has the flow field of cutting apart and suppresses the radially function of flow field growth when fan running, and then reduces disturbance and noise.Therefore, the fan blade of present embodiment will have the effect that promotes blade rigid, steady flow condition and reduce noise.
Create first embodiment's fan blade according to this, more can be extended out second embodiment who has more trilobed wheel portion.
With reference to Fig. 5, the utility model second embodiment's fan blade comprises the first impeller portion 8, second impeller portion 9 and the trilobed wheel portion 10.Wherein the first impeller portion 8 is formed by hub portion 1 and along circumferential array and inner majority first blade 11 that is individually fixed on hub portion 1 outer circumferential face; The second impeller portion 9 is connected in the ring portion 14 of each first blade, 11 outer end of the first impeller portion 8 by an inner peripheral surface, and forms along circumferential array and inner majority second blade 12 that is individually fixed on ring portion 14 outer circumferential faces; And trilobed wheel portion 10, be connected in another ring portion 15 of each second blade, 12 outer end of the second impeller portion 9 by an inner peripheral surface, and form along circumferential array and inner majority the 3rd blade 13 that is individually fixed on another ring portion 15 outer circumferential faces.
In present embodiment, the fan of commonly using compared to Fig. 1 and Fig. 2, majority the 3rd blade 13 length of learning the trilobed wheel portion 10 with free end blade reduce, more respectively by ring portion 14 and 15 most first blade, 11 outer ends and the second impeller portion 9 and most second blade, 12 outer ends and trilobed wheel portion 10 are fixing, make the rigidity of its whole fan blade increase and increase the ability of its antagonism vortex disturbance, and and then reduce noise.Again, ring portion 14 and 15 has the flow field of cutting apart and suppresses the radially function of flow field growth when fan running, and then reduces disturbance and noise.Therefore, the fan blade of present embodiment will have more the effect that promotes blade rigid, steady flow condition and reduce noise.
Claims (2)
1, a kind of fan blade is characterized in that: comprise at least:
The first impeller portion is formed by a hub portion and along circumferential array and inner majority first blade that is individually fixed on the hub portion outer circumferential face; And
The second impeller portion is connected in the ring portion of each first blade outer end of this first impeller portion by an inner peripheral surface, and forms along circumferential array and inner majority second blade that is individually fixed on this ring portion outer circumferential face.
2, fan blade as claimed in claim 1, it is characterized in that: the trilobed wheel portion that more comprises the radial outside that is connected in this second impeller portion is to n impeller portion, wherein n is the positive integer greater than 2, wherein, this trilobed wheel portion is to each impeller portion of this n impeller portion, all formed by a ring portion and along circumferential array and the inner majority n blade that is individually fixed in this ring portion outer circumferential face, and between this second impeller portion to this n impeller portion, the combination between each internally outer adjacent impeller portion is: the inner peripheral surface than this ring portion of outside impeller portion is fixed in each blade outer end of more inboard impeller portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98241566 CN2356177Y (en) | 1998-10-19 | 1998-10-19 | Fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98241566 CN2356177Y (en) | 1998-10-19 | 1998-10-19 | Fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2356177Y true CN2356177Y (en) | 1999-12-29 |
Family
ID=33988293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98241566 Expired - Lifetime CN2356177Y (en) | 1998-10-19 | 1998-10-19 | Fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2356177Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007085125A1 (en) * | 2006-01-26 | 2007-08-02 | Hangao Zhao | A combined fan with axial-flow and transverse-flow blades |
| CN100357609C (en) * | 2004-05-17 | 2007-12-26 | 台达电子工业股份有限公司 | Fan |
| CN100389267C (en) * | 2004-07-06 | 2008-05-21 | 鸿富锦精密工业（深圳）有限公司 | Fan blade structure |
| CN101713417B (en) * | 2008-10-08 | 2012-06-13 | 日本电产伺服有限公司 | Impeller, fan apparatus using the same, and method of manufacturing impeller |
| CN103225625A (en) * | 2013-03-28 | 2013-07-31 | 无锡小天鹅股份有限公司 | Centrifugal fan and clothes dryer with same |
| CN106051866A (en) * | 2016-07-22 | 2016-10-26 | 宁波方太厨具有限公司 | Draught fan capable of forming man-made tornado and extractor hood |
| WO2017128803A1 (en) * | 2016-01-27 | 2017-08-03 | 广东美的环境电器制造有限公司 | Fan wheel, and home appliance |
-
1998
- 1998-10-19 CN CN 98241566 patent/CN2356177Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357609C (en) * | 2004-05-17 | 2007-12-26 | 台达电子工业股份有限公司 | Fan |
| CN100389267C (en) * | 2004-07-06 | 2008-05-21 | 鸿富锦精密工业（深圳）有限公司 | Fan blade structure |
| WO2007085125A1 (en) * | 2006-01-26 | 2007-08-02 | Hangao Zhao | A combined fan with axial-flow and transverse-flow blades |
| CN101713417B (en) * | 2008-10-08 | 2012-06-13 | 日本电产伺服有限公司 | Impeller, fan apparatus using the same, and method of manufacturing impeller |
| CN103225625A (en) * | 2013-03-28 | 2013-07-31 | 无锡小天鹅股份有限公司 | Centrifugal fan and clothes dryer with same |
| WO2017128803A1 (en) * | 2016-01-27 | 2017-08-03 | 广东美的环境电器制造有限公司 | Fan wheel, and home appliance |
| CN106051866A (en) * | 2016-07-22 | 2016-10-26 | 宁波方太厨具有限公司 | Draught fan capable of forming man-made tornado and extractor hood |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |