CN103573697A - Centrifugal vane - Google Patents
Centrifugal vane Download PDFInfo
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- CN103573697A CN103573697A CN201210248452.2A CN201210248452A CN103573697A CN 103573697 A CN103573697 A CN 103573697A CN 201210248452 A CN201210248452 A CN 201210248452A CN 103573697 A CN103573697 A CN 103573697A
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- blade
- transversal
- circle
- centrifugation
- mold surface
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Abstract
The invention provides a centrifugal vane. The centrifugal vane can increase air quantity and reduce noise and is characterized in that the inner profile and the outer profile of every blade are concentric arc surfaces with the same center line, the radius dimension of the outer profile is larger than that of the inner profile. Tested by theories and experimental results , the centrifugal vane can increase the air quantity greatly (by more than 15%), obtain more uniform airflow during rotary air supply and obviously reduce noise by 2-4 db (decibel).
Description
Technical field
The ventilation equipment technical field that the present invention relates to order about Air Flow, particularly relates to a kind of centrifugation blade.
Background technique
For the centrifugation blade of ventilation equipment, its quality, performance and blade profile shape are closely related, and how to design blade profile most important, and the blade design of the centrifugation blade of ideal scheme will cause the air quantity of centrifugation blade to increase, but level of noise reduces.Current centrifugation blade adopts airfoil fan mostly, and the root thickness size of blade is larger, and from the root of blade toward end transition, thickness size reduces gradually.Also the blade that has other molded line, but its air quantity noise result never has large breakthrough.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of centrifugation blade, improves air quantity, reduces level of noise.
The present invention is achieved through the following technical solutions:
Centrifugation blade, includes wheel hub and multi-disc blade, and multi-disc blade is circumferential arrangement, is centered around the periphery of wheel hub, and wheel hub is positioned at middle part; Described in multi-disc, blade adopts identical cross section structure; Wherein, the interior profile of described blade and outer mold surface are the concentric circle arc plane with identical central line, and the radius size of described outer mold surface is greater than the radius size of interior profile.
Therein in an embodiment, in blade, the interval of adjacent blades equates described in multi-disc.
In an embodiment, on the cross section perpendicular to described wheel hub, the transversal of the interior profile of described blade and the transversal of outer mold surface are isocentric circular arc therein; The angle number a that enters of described blade is: 50-120 degree, enter the angle that angle is the two circle tangent lines at the transversal circle D3 of outer mold surface and the intersection point place of blade inlet diameter D1, and blade inlet diameter D1 is positioned at blade inlet edge.
Further, the angle number b that goes out of described blade is: 10-80 degree, and angle of departure is the angle of the two circle tangent lines at the transversal circle D3 of outer mold surface and the intersection point place of blade exit diameter D2, and blade exit diameter D2 is positioned at blade exit edge.
Further, the ratio of described blade inlet diameter D1 and blade exit diameter D2 is: 0.5-0.99.
Further, the transversal of the interior profile of described impeller circle with the transversal radius of a circle difference of outer mold surface is: 0.1-10mm.
Beneficial effect of the present invention is as follows:
Centrifugation blade of the present invention, improved air quantity, reduced noise, be specially: because interior profile and the outer mold surface of blade is the concentric circle arc plane with identical central line, theory and experimental result have all confirmed, its air quantity is greatly improved (> 15%), and when rotation air-supply, air-flow is more even, can significantly reduce noise 2-4db.
Accompanying drawing explanation
Fig. 1 is the perspective view of centrifugation blade of the present invention;
Fig. 2 is the cross section structure schematic diagram of centrifugation blade of the present invention;
Fig. 3 is the present invention's air quantity, noise parameter schematic diagram compared with prior art.
Description of reference numerals:
1, centrifugation blade, 11, blade, 12, wheel hub.
Embodiment
In order to solve the problem of prior art, as shown in Figure 1, Figure 2, a kind of centrifugation blade 1 has been proposed, include wheel hub 12 and multi-disc blade 11, multi-disc blade is circumferential arrangement, is centered around the periphery of wheel hub, and wheel hub is positioned at middle part; Described in multi-disc, blade adopts identical cross section structure; Wherein, the interior profile of described blade and outer mold surface are the concentric circle arc plane with identical central line, and the radius size of described outer mold surface is greater than the radius size of interior profile.
Therein in an embodiment, in blade, the interval of adjacent blades equates described in multi-disc.
In an embodiment, on the cross section perpendicular to wheel hub, the transversal of the interior profile of described blade and the transversal of outer mold surface are isocentric circular arc therein; The angle number a that enters of described blade is: 50-120 degree, enter the angle that angle is the two circle tangent lines at the transversal circle D3 of outer mold surface and the intersection point place of blade inlet diameter D1, and blade inlet diameter D1 is positioned at blade inlet edge.
Preferably, the angle number a that enters of described blade is: 83 degree.
Further, the angle number b that goes out of described blade is: 10-80 degree, and angle of departure is the angle of the two circle tangent lines at the transversal circle D3 of outer mold surface and the intersection point place of blade exit diameter D2, and blade exit diameter D2 is positioned at blade exit edge.
Preferably, the angle number b that goes out of described blade is: 33 degree.
Described blade to go out angle number b too small, the thickness of blade exit circumferencial direction will be larger, can cause blade wake passing district wider, is unfavorable for noise reduction; And described blade to go out angle number b excessive, cannot obtain acceleration channels and blower pressure is lower.Select 33 degree can take into account the performance of air quantity, noise two aspects.
Further, the ratio of described blade inlet diameter D1 and blade exit diameter D2 is: 0.5-0.99.
Preferably, the ratio of described blade inlet diameter D1 and blade exit diameter D2 is: 119/138～241/276.
This ratio crosses that conference Yin Yedao is too short is difficult to form accelerating process, cannot obtain superior fan performance; Can the friction loss of the long increase blade of Yin Yedao air-flow and ratio is too small.
Further, the transversal of the interior profile of described impeller circle with the transversal radius of a circle difference of outer mold surface is: 0.1-10mm.
Preferably, the transversal of the interior profile of described impeller circle with the transversal radius of a circle difference of outer mold surface is: 2mm.
Semidiameter is too small cannot meet blade strength requirement, and semidiameter is crossed conference and caused blade exit circumferential width excessive, causes blade wake passing district wider, is unfavorable for noise reduction.
Following table is the laboratory data that centrifugation blade of the present invention is compared with prior art centrifugation blade:
By upper table and Fig. 3, can be found out, identical even rotating speed is lower in the situation that at rotation speed of fan, the air quantity of centrifugation blade of the present invention is greatly improved (> 15%), and when rotation air-supply, air-flow is more even, can significantly reduce noise 2-4db.
The above embodiment has only expressed several mode of execution of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. centrifugation blade, includes wheel hub and multi-disc blade, and multi-disc blade is circumferential arrangement, is centered around the periphery of wheel hub, and wheel hub is positioned at middle part; Described in multi-disc, blade adopts identical cross section structure; It is characterized in that, the interior profile of described blade and outer mold surface are the concentric circle arc plane with identical central line, and the radius size of described outer mold surface is greater than the radius size of interior profile.
2. centrifugation blade according to claim 1, is characterized in that, in blade, the interval of adjacent blades equates described in multi-disc.
3. centrifugation blade according to claim 1 and 2, is characterized in that, on the cross section perpendicular to described wheel hub, the transversal of the interior profile of described blade and the transversal of outer mold surface are isocentric circular arc; The angle number a that enters of described blade is: 50-120 degree, enter the angle that angle is the two circle tangent lines at the transversal circle D3 of outer mold surface and the intersection point place of blade inlet diameter D1, and blade inlet diameter D1 is positioned at blade inlet edge.
4. centrifugation blade according to claim 3, is characterized in that, the angle number a that enters of described blade is: 83 degree.
5. centrifugation blade according to claim 3, it is characterized in that, the angle number b that goes out of described blade is: 10-80 degree, and angle of departure is the angle of the two circle tangent lines at the transversal circle D3 of outer mold surface and the intersection point place of blade exit diameter D2, and blade exit diameter D2 is positioned at blade exit edge.
6. centrifugation blade according to claim 5, is characterized in that, the angle number b that goes out of described blade is: 33 degree.
7. centrifugation blade according to claim 5, is characterized in that, the ratio of described blade inlet diameter D1 and blade exit diameter D2 is: 0.5-0.99.
8. centrifugation blade according to claim 7, is characterized in that, the ratio of described blade inlet diameter D1 and blade exit diameter D2 is: 119/138～241/276.
9. centrifugation blade according to claim 7, is characterized in that, transversal circle and the transversal radius of a circle difference of outer mold surface of the interior profile of described impeller are: 0.1-10mm.
10. centrifugation blade according to claim 8, is characterized in that, transversal circle and the transversal radius of a circle difference of outer mold surface of the interior profile of described impeller are: 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210248452.2A CN103573697A (en) | 2012-07-18 | 2012-07-18 | Centrifugal vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210248452.2A CN103573697A (en) | 2012-07-18 | 2012-07-18 | Centrifugal vane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103573697A true CN103573697A (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210248452.2A Pending CN103573697A (en) | 2012-07-18 | 2012-07-18 | Centrifugal vane |
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| CN (1) | CN103573697A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564803A (en) * | 2015-01-16 | 2015-04-29 | 珠海格力电器股份有限公司 | Centrifugal impeller, centrifugal fan module and air conditioning unit |
| CN107726445A (en) * | 2017-07-24 | 2018-02-23 | 浙江绍兴苏泊尔生活电器有限公司 | Wind wheel and purifier with same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666373A (en) * | 1986-03-20 | 1987-05-19 | Eiichi Sugiura | Impeller for rotary fluid machine |
| CN201513380U (en) * | 2009-10-19 | 2010-06-23 | 浙江双阳风机有限公司 | Impeller of centrifugal fan for monitoring nuclear island atmosphere in nuclear power plant |
| CN202673774U (en) * | 2012-07-18 | 2013-01-16 | 珠海格力电器股份有限公司 | Centrifuge wind blade |
-
2012
- 2012-07-18 CN CN201210248452.2A patent/CN103573697A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666373A (en) * | 1986-03-20 | 1987-05-19 | Eiichi Sugiura | Impeller for rotary fluid machine |
| CN201513380U (en) * | 2009-10-19 | 2010-06-23 | 浙江双阳风机有限公司 | Impeller of centrifugal fan for monitoring nuclear island atmosphere in nuclear power plant |
| CN202673774U (en) * | 2012-07-18 | 2013-01-16 | 珠海格力电器股份有限公司 | Centrifuge wind blade |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564803A (en) * | 2015-01-16 | 2015-04-29 | 珠海格力电器股份有限公司 | Centrifugal impeller, centrifugal fan module and air conditioning unit |
| CN107726445A (en) * | 2017-07-24 | 2018-02-23 | 浙江绍兴苏泊尔生活电器有限公司 | Wind wheel and purifier with same |
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Application publication date: 20140212 |