CN208634100U - A kind of multi sphere section centrifugal fan blade - Google Patents
A kind of multi sphere section centrifugal fan blade Download PDFInfo
- Publication number
- CN208634100U CN208634100U CN201821319001.2U CN201821319001U CN208634100U CN 208634100 U CN208634100 U CN 208634100U CN 201821319001 U CN201821319001 U CN 201821319001U CN 208634100 U CN208634100 U CN 208634100U
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- circular arc
- circle
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- center
- fan blade
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Abstract
A kind of multi sphere section centrifugal fan blade is related to a kind of multi sphere section centrifugal fan blade, is mainly used in the centrifugal blower of high-pressure low-flow.The utility model improves fan blade molded line, proposes a kind of multi sphere section centrifugal fan blade, not only increases the aerodynamic characteristic of blower, reduces the noise of blower, also improves the efficiency of blower.The utility model includes blade body, it is characterised in that: a vertical auxiliary line passes through the point of contact of the first circular arc and the second circular arc, and the center of circle of the first circular arc is fixed in the first auxiliary circle, and the center of circle of the first auxiliary circle is fixed in vertical auxiliary line；The center of circle of second circular arc is fixed in the second auxiliary circle, and the second auxiliary circle and the first auxiliary circle are concentric, and the radius of the second auxiliary circle is three times of the first auxiliary radius of circle；The third circular arc and the point of contact of the 4th circular arc and the point of contact of third circular arc and the second circular arc are symmetrical as horizontal axis using the radius for passing through the third circular arc center of circle；The end of 4th circular arc is set in the second auxiliary circle.
Description
Technical field
The utility model relates to a kind of multi sphere section centrifugal fan blades, are mainly used in the centrifugal blower of high-pressure low-flow
In.
Background technique
Centrifugal blower is to improve gas pressure by the mechanical energy of input and supply gas side by side the machinery of body, it is a kind of driven
Fluid machinery.Auxiliary products of the centrifugal blower as all trades and professions are widely used in subway ventilation, mining and metallurgy is divulged information, building change
Gas ventilation, air-conditioning equipment etc..Impeller is the core Pneumatic component of centrifugal blower, and blade construction directly decides in draught fan impeller
The mobility status in portion, to influence the performance and efficiency of complete machine.Currently, the blade shape applied in centrifugal blower have prismatic blade,
Single arc centrifugal fan blade.But the centrifugal blower of the above shape blade is used in the occasion of high-pressure low-flow, it is generally existing
Low efficiency, the big disadvantage of high energy consumption, noise, this be perplex manufacturing enterprise and user maximum technical problem.
Summary of the invention
In order to overcome the shortcomings of that high voltage small flow centrifugal fan efficiency low and high energy consumption, noise are big, the utility model is to blower
Vane type line is improved, and proposes a kind of multi sphere section centrifugal fan blade, is not only increased the aerodynamic characteristic of blower, is reduced
The noise of blower also improves the efficiency of blower.
Purpose of the utility model is realized as follows: the utility model includes blade body, it is characterised in that: the blade
Body is followed successively by the first circular arc, the second circular arc, third circular arc and the 4th circular arc from the bottom to top；Outside first circular arc and the second circular arc phase
It cuts, the second circular arc and third circular arc phase inscribe, third circular arc and the 4th circular arc phase inscribe；One vertical auxiliary line passes through the first circular arc
With the point of contact of the second circular arc, the center of circle of the first circular arc is fixed in the first auxiliary circle, and the center of circle of the first auxiliary circle is fixed on vertically
In auxiliary line；The center of circle of second circular arc is fixed, and the second auxiliary circle and the first auxiliary circle are concentric in the second auxiliary circle, and second
The radius of auxiliary circle is three times of the first auxiliary radius of circle；The point of contact of the third circular arc and the 4th circular arc and third circular arc and the
The point of contact of two circular arcs is using symmetrical as horizontal axis by the radius in the third circular arc center of circle；It is auxiliary that the end of 4th circular arc is set to second
It helps on circle；4th circular arc end tangent line and the angle of horizontal direction are 120 °~140 °.
Further, a kind of multi sphere section centrifugal fan blade entrance installation site is at a distance from vertical auxiliary line 7
For 46mm.
The utility model has the beneficial effects that the utility model is compared with prior art, using the joining method of multi sphere section,
Higher efficiency value has been obtained in high pressure, small flow fan, and has effectively reduced the noise of blower, the utility model will be extensive
Applied in machinery manufacturing technology field.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
1 it is the first circular arc in attached drawing, 2 be the second circular arc, 3 be third circular arc, 4 be the 4th circular arc, 5 is vertical auxiliary line, 6
It is the second auxiliary circle for the first auxiliary circle, 7.
Specific embodiment
The utility model includes blade body, it is characterised in that: the blade body is followed successively by the first circular arc 1, from the bottom to top
Two circular arcs 2, third circular arc 3 and the 4th circular arc 4；First circular arc 1 and the second circular arc 2 are mutually circumscribed, the second circular arc 2 and third circular arc 3
Phase inscribe, 4 phase inscribe of third circular arc 3 and the 4th circular arc；One vertical auxiliary line 5 is cut by the first circular arc 1 and the second circular arc 2
Point, the center of circle of the first circular arc 1 are fixed in the first auxiliary circle 6, and the center of circle of the first auxiliary circle 6 is fixed in vertical auxiliary line 5；Institute
The center of circle for stating the second circular arc 2 is fixed in the second auxiliary circle 7, and the second auxiliary circle 7 and the first auxiliary circle 6 are concentric, the second auxiliary circle 7
Radius be three times of 6 radius of the first auxiliary circle；The point of contact of the third circular arc 3 and the 4th circular arc 4 and third circular arc 3 and second
The point of contact of circular arc 2 is using symmetrical as horizontal axis by the radius in 3 center of circle of third circular arc；The end of 4th circular arc 4 is set to second
In auxiliary circle 7；4th circular arc, 4 end tangent line and the angle α of horizontal direction are 120 °~140 °.
Further, the blade body entrance installation site and vertical 5 distance L of auxiliary line are 46mm.
Claims (2)
1. a kind of multi sphere section centrifugal fan blade, including blade body, it is characterised in that: the blade body is followed successively by from the bottom to top
One circular arc (1), the second circular arc (2), third circular arc (3) and the 4th circular arc (4)；Outside first circular arc (1) and the second circular arc (2) phase
It cuts, the second circular arc (2) and third circular arc (3) phase inscribe, third circular arc (3) and the 4th circular arc (4) phase inscribe；One vertical auxiliary line
(5) pass through the point of contact of the first circular arc (1) and the second circular arc (2), the center of circle of the first circular arc (1) is fixed on the first auxiliary circle (6),
The center of circle of first auxiliary circle (6) is fixed on vertical auxiliary line (5)；The center of circle of second circular arc (2) is fixed to be assisted with second
On circle (7), the second auxiliary circle (7) and the first auxiliary circle (6) are concentric, and the radius of the second auxiliary circle (7) is the first auxiliary circle (6) half
Three times of diameter；The point of contact and third circular arc (3) of the third circular arc (3) and the 4th circular arc (4) and the point of contact of the second circular arc (2) with
Radius by third circular arc (3) center of circle is that horizontal axis is symmetrical；The end of 4th circular arc (4) is set to the second auxiliary circle (7)
On；4th circular arc (4) end tangent line and the angle α of horizontal direction are 120 °~140 °.
2. a kind of multi sphere section centrifugal fan blade according to claim 1, it is characterised in that: the blade body entrance installation
Position is 46mm with vertical auxiliary line (5) distance L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821319001.2U CN208634100U (en) | 2018-08-16 | 2018-08-16 | A kind of multi sphere section centrifugal fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821319001.2U CN208634100U (en) | 2018-08-16 | 2018-08-16 | A kind of multi sphere section centrifugal fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208634100U true CN208634100U (en) | 2019-03-22 |
Family
ID=65743132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821319001.2U Expired - Fee Related CN208634100U (en) | 2018-08-16 | 2018-08-16 | A kind of multi sphere section centrifugal fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208634100U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762050A (en) * | 2019-12-18 | 2020-02-07 | 浙江兴益风机电器有限公司 | Centrifugal fan impeller |
| CN114707262A (en) * | 2022-03-23 | 2022-07-05 | 广东敏卓机电股份有限公司 | Centrifugal fan, centrifugal wind wheel and design method of noise reduction blade of centrifugal wind wheel |
-
2018
- 2018-08-16 CN CN201821319001.2U patent/CN208634100U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762050A (en) * | 2019-12-18 | 2020-02-07 | 浙江兴益风机电器有限公司 | Centrifugal fan impeller |
| CN114707262A (en) * | 2022-03-23 | 2022-07-05 | 广东敏卓机电股份有限公司 | Centrifugal fan, centrifugal wind wheel and design method of noise reduction blade of centrifugal wind wheel |
| CN114707262B (en) * | 2022-03-23 | 2023-08-18 | 广东敏卓机电股份有限公司 | Centrifugal fan, centrifugal wind wheel and design method of noise reduction blade of centrifugal wind wheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190322 |