CN201232659Y - High-pressure centrifugal fan - Google Patents
High-pressure centrifugal fan Download PDFInfo
- Publication number
- CN201232659Y CN201232659Y CNU2008200758739U CN200820075873U CN201232659Y CN 201232659 Y CN201232659 Y CN 201232659Y CN U2008200758739 U CNU2008200758739 U CN U2008200758739U CN 200820075873 U CN200820075873 U CN 200820075873U CN 201232659 Y CN201232659 Y CN 201232659Y
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- fan
- impeller
- high pressure
- noise
- blade
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Abstract
The utility model provides a high pressure centrifugal fan which comprises a motor, an impeller, a shell, and the like. The impeller includes an impeller disc and an impeller cover which are connected with vanes; the vanes are a plurality of long vanes and short vanes with the same quantity and are connected with the impeller disc and the impeller cover in interval; and the outlet angle of each vane is 90 degree. The high pressure centrifugal fan achieves the effects that the diameter of the impeller is designed to be 680mm; the width of the outlet of the impeller is designed to be 28mm according to the design rules and characteristics of the fan, thus leading the flux of the fan to achieve the designed value 1500m [3]/h when the static pressure is 8000Pa. The noise of the fan is 85.86dB which is reduced by more than 3dB than the noise of the common fan; after a muffler is additionally arranged, the noise of the fan is about 80dB, which achieves the demand of less than 85dB for a user, replaces a whistle box with large size and high cost; moreover, the power of the fan is also reduced by 3Kw than that of a common fan.
Description
Technical field
The utility model relates to a kind of blower fan, particularly the centrifugal high pressure fan of small flow high pressure band silencing apparatus.
Background technique
Generally, the performance characteristics of the domestic high pressure positive blower that has at present is that blast height, flow are relatively also high.For example, the blower fan series such as 9-19,9-26 that China produces at present, blower fan series such as 8-09,9-12, when the former was uniform pressure, flow was excessive, was 3220-5153m
3/ h; And the latter is when to be flow identical, and pressure is excessive, is 13050Pa.The characteristics of high pressure blower fan are that noise is bigger, and the decibel value of blower fan is to be directly proportional with the logarithm of flow with square product of pressure.To this phenomenon, be to adopt Sound Attenuator to solve noise, thereby cause volume excessive that cost is also high.
Summary of the invention
For solving the problem that exists in the above-mentioned technology, the purpose of this utility model provides a kind of centrifugal high pressure fan, is beneficial to obtain blower fan relatively more reasonable than low noise, performance and the desulphurization plant coupling.
Be to realize goal of the invention, the technical solution adopted in the utility model provides a kind of centrifugal high pressure fan, and to be that a plurality of linear leafs of equal number and short blade are equally spaced respectively be connected hub disk and wheel covers to fan impeller blade, and blade outlet angle is 90 °.
The effect that the utility model reaches is according to the design rule of blower fan and characteristics, and impeller diameter is designed to 680mm impeller outlet width 28mm, exports narrow 29mm than the identical draught fan impeller of former pressure, makes blower fan flow when static pressure is 8000Pa reach design load 1500m
3/ h.Former fan noise 89.12dB, existing fan noise 85.86dB, noise has just reduced 3.26dB.Install silencing apparatus rear fan noise additional about 80dB, reached the requirement of user less than 85dB, replaced the high Sound Attenuator of the big cost of volume, power also can reduce 3Kw.
The model of producing has 5.5A flow 425-1135m at present
3/ h, pressure 5037-3716Pa; 6.3A flow 644-1728m
3/ h, pressure 6794-5012Pa; 7.1A flow 929-2484m
3/ h, pressure 8688-6409Pa; 7.5A flow 1095-2928m
3/ h, pressure 9694-7151Pa; 8A flow 1328-3553m
3/ h, pressure 11030-8137Pa.This blower fan is that the power plant desulfurization equipment that aims at Howden Wua Engineering Co., Ltd designs, but also can be used on the occasion that medicine company, chemical industry and paper-making industry have the special process requirement, this blower fan cast aluminum impellers, and explosion separation motor can be used on the occasion of requirement of explosion proof
Description of drawings
Fig. 1 is the utility model centrifugal high pressure fan impeller plan view;
Fig. 2 is the utility model centrifugal high pressure fan impeller side view.
Among the figure:
1, enclosing cover for impeller 2, linear leaf 3, short blade 4, wheel disc
Embodiment
Reach embodiment in conjunction with the accompanying drawings and specify the process that the utility model centrifugal high pressure fan structure realizes.
The utility model centrifugal high pressure fan includes impeller and casing, described impeller includes hub disk and the wheel cap that is connected with blade, described blade is a plurality of linear leafs 2 of equal number and short blade 3 is equally spaced respectively is connected on described hub disk 1 and the wheel cap 4, and every blade outlet angle is 90 °.
Described a plurality of linear leaf 2 and short blade 3 are 8 linear leafs and 8 short blades.
The exit width of described impeller is 0.0412 with its diameter ratio.
As shown in Figure 1, 2, the impeller design of the utility model centrifugal high pressure fan is that 8 linear leafs and 8 short blades 3 are welded on respectively on hub disk 1 and the wheel cap 4, and blade outlet angle is 90 °, is radial blade.The exit width of impeller is 0.0412 with its diameter ratio, forms the ultranarrow shape.Motor and the shell of coupling ABB M2QA160M-2-18.5K can realize that flow is 1500m
3/ h, static pressure is the fan performance of 8000Pa.Connect a silencing apparatus that is complementary with it, noise reaches 83dB.
Claims (3)
1, a kind of centrifugal high pressure fan, include impeller and casing, described impeller includes hub disk and the wheel cap that is connected with blade, it is characterized in that: described blade is a plurality of linear leafs (2) of equal number and short blade (3) is equally spaced respectively is connected on described hub disk (1) and the wheel cap (4), and every blade outlet angle is 90 °.
2, centrifugal high pressure fan according to claim 1 is characterized in that: described a plurality of linear leafs (2) and short blade (3) are 8 linear leafs and 8 short blades.
3, centrifugal high pressure fan according to claim 1 is characterized in that: the exit width of described impeller is 0.0412 with its diameter ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200758739U CN201232659Y (en) | 2008-08-04 | 2008-08-04 | High-pressure centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200758739U CN201232659Y (en) | 2008-08-04 | 2008-08-04 | High-pressure centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201232659Y true CN201232659Y (en) | 2009-05-06 |
Family
ID=40619037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200758739U Expired - Fee Related CN201232659Y (en) | 2008-08-04 | 2008-08-04 | High-pressure centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201232659Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128174A (en) * | 2011-04-02 | 2011-07-20 | 山东大学 | Spiral-flow type blockage-free energy-efficient centrifugal fan |
| CN102797702A (en) * | 2012-08-20 | 2012-11-28 | 上海通用风机股份有限公司 | Narrowly welded impeller of small-flow centrifugal fan and centrifugal fan |
-
2008
- 2008-08-04 CN CNU2008200758739U patent/CN201232659Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128174A (en) * | 2011-04-02 | 2011-07-20 | 山东大学 | Spiral-flow type blockage-free energy-efficient centrifugal fan |
| CN102797702A (en) * | 2012-08-20 | 2012-11-28 | 上海通用风机股份有限公司 | Narrowly welded impeller of small-flow centrifugal fan and centrifugal fan |
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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: 20090506 Termination date: 20110804 |