CN200943601Y - Vane of centrifugal ventilation machine - Google Patents
Vane of centrifugal ventilation machine Download PDFInfo
- Publication number
- CN200943601Y CN200943601Y CN 200620079615 CN200620079615U CN200943601Y CN 200943601 Y CN200943601 Y CN 200943601Y CN 200620079615 CN200620079615 CN 200620079615 CN 200620079615 U CN200620079615 U CN 200620079615U CN 200943601 Y CN200943601 Y CN 200943601Y
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- CN
- China
- Prior art keywords
- blade
- curvature
- curved part
- air flow
- centrifugal blower
- 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 - Fee Related
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Abstract
A blade of a centrifugal fan is characterized in that: the rear of a blade (1) made by curbing the boards in the same thickness is provided with a curvature (1.2), the cross section of the curvature (1.2) is a waterdrop-type hollow cavity body and the curvature (1.2) is integrated with the curve surface of the front of the blade (1.1). The blade (1) is vertically fixed between the two rotary tables (2) in the same distance. The entirety of the blade (1) has a streamline structure, particularly the design of the curvature can reduce the impact on the air flow inlet, increase the air flow pressure, reduce the noises caused by the air flow, increase the ventilation efficiency while is characterized in high strength, rigidity and extension of the service life.
Description
Technical field
The utility model relates to a kind of centrifugal blower blade.
Background technique
Centrifugal blower is very common a kind of structural type in the ventilation equipment, is widely applied in production and the life.But because blade adopts in the existing centrifugal blower is uniform thickness list circular arc plate C type structure, its strength and stiffness are not high, are easily damaged, and working life is not long.Particularly pneumatic noise is bigger in the running of impeller, and energy consumption is also high, and drafting efficiency is lower.
Summary of the invention
The technical problems to be solved in the utility model is for overcoming the deficiencies in the prior art, and the centrifugal blower blade that provides a kind of and reduce pneumatic noise, raise the efficiency, cut down the consumption of energy and can increase the service life.
The technical solution that realizes above-mentioned purpose is: the blade rear portion that is become by the uniform thickness sheet bending has a curved part, and the transverse section of this curved part is the hollow cavity of water droplet shape, and the curved surface of curved part and blade front portion holds together.
Its further technical solution is: the equidistant vertical fixing of described blade is between two wheel discs.Blade has an end of curved part towards the axle center, and the front portion of blade is towards the edge of impeller.
The good effect that the utility model is produced technically is: wait heavy-gauge sheeting to make because of this blade by one, its rear portion rotary bending again becomes a transverse section to be the hollow cavity of drop-shaped, with its anterior common streamline type entirety that forms, has good aeroperformance, can reduce the impact resistance of airflow inlet like this, thereby reduce pneumatic noise, improve stream pressure, cut down the consumption of energy, improve drafting efficiency; Because the design of curved part has also increased the be connected area of blade with impeller, so can gain in strength and rigidity, increases the service life.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation that blade combines with impeller.
Fig. 3 is the worm's eye view of Fig. 2.
Embodiment
In order to narrate conveniently, with an integral blade 1 be divided into anterior 1.1 and rear portion two-part describe.
As shown in Figure 1, blade 1 described in the utility model is to be made by heavy-gauge sheetings such as monoblocks, and wherein, the rear portion bends to the hollow cavity curved part 1.2 that a transverse section is the water droplet shape, with streamlined integral body of the common formation of anterior 1.1 curved surface.The termination of curved part 1.2 contacts with blade 1 body, also can weld or rivet, or connect with screw.
As Fig. 2, shown in Figure 3, be radial equidistant intervals by above a plurality of blades 1 made from spline structure and be vertically fixed between two wheel discs 2, the part that has a curved part 1.2 is towards the axle center 3, and anterior 1.1 towards impeller 2 edges.
Said blade 1 is formed by the metallic material such as the steel plate bending of same thickness, and the big I of its actual specification designs according to the specification size of blower fan, and what of blade 1 are also determined according to the specification of blower fan.
Claims (3)
1, a kind of centrifugal blower blade, it is characterized in that having a curved part (1.2) by blade (1) rear portion that the uniform thickness sheet bending becomes, the transverse section of this curved part (1.2) is the hollow cavity of water droplet shape, and curved part (1.2) is linked to be a streamlined integral body with the front portion (1.1) of blade (1).
2, centrifugal blower blade as claimed in claim 1 is characterized in that the equidistant vertical fixing of described blade (1) is between two wheel discs (2).
3, centrifugal blower blade as claimed in claim 1 or 2 it is characterized in that a end that blade (1) has curved part (1.2) towards the axle center, and the front portion (1.1) of blade (1) is towards the edge of impeller (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620079615 CN200943601Y (en) | 2006-08-22 | 2006-08-22 | Vane of centrifugal ventilation machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620079615 CN200943601Y (en) | 2006-08-22 | 2006-08-22 | Vane of centrifugal ventilation machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200943601Y true CN200943601Y (en) | 2007-09-05 |
Family
ID=38718232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620079615 Expired - Fee Related CN200943601Y (en) | 2006-08-22 | 2006-08-22 | Vane of centrifugal ventilation machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200943601Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963892A (en) * | 2015-08-03 | 2015-10-07 | 吉首大学 | Dirt retention prevention draught fan with reverse-drop-shaped blades |
| CN105066087A (en) * | 2015-08-14 | 2015-11-18 | 吉首大学 | Tail heat recovery type dust retention preventing oil burning boiler |
| CN106593950A (en) * | 2017-01-20 | 2017-04-26 | 美的集团股份有限公司 | Blade, centrifugal fan impeller, centrifugal fan and extractor hood |
| KR20210105653A (en) * | 2020-02-19 | 2021-08-27 | 소애연 | Turbo type airfoil section blade having forward curved vane |
-
2006
- 2006-08-22 CN CN 200620079615 patent/CN200943601Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963892A (en) * | 2015-08-03 | 2015-10-07 | 吉首大学 | Dirt retention prevention draught fan with reverse-drop-shaped blades |
| CN105066087A (en) * | 2015-08-14 | 2015-11-18 | 吉首大学 | Tail heat recovery type dust retention preventing oil burning boiler |
| CN105066087B (en) * | 2015-08-14 | 2018-01-12 | 衢州大通锅炉有限责任公司 | A kind of anti-laying dust oil burning boiler of tail heat reclamation type |
| CN106593950A (en) * | 2017-01-20 | 2017-04-26 | 美的集团股份有限公司 | Blade, centrifugal fan impeller, centrifugal fan and extractor hood |
| KR20210105653A (en) * | 2020-02-19 | 2021-08-27 | 소애연 | Turbo type airfoil section blade having forward curved vane |
| KR102309018B1 (en) * | 2020-02-19 | 2021-10-05 | 소애연 | Turbo type airfoil section blade having forward curved vane |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070905 Termination date: 20100822 |