CN208634100U - A multi-arc centrifugal fan blade - Google Patents
A multi-arc 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
- Authority
- CN
- China
- Prior art keywords
- circular arc
- circle
- auxiliary
- arc
- auxiliary circle
- 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
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
一种多弧段离心风机叶片涉及一种多弧段离心风机叶片，主要应用于高压小流量的离心风机中。本实用新型对风机叶片型线进行了改善，提出一种多弧段离心风机叶片，不仅提高了风机的气动特性、降低了风机的噪声，还提高了风机的效率。本实用新型包括叶片体，其特征在于：一竖直辅助线经过第一圆弧和第二圆弧的切点，第一圆弧的圆心固定在第一辅助圆上，第一辅助圆的圆心固定在竖直辅助线上；所述第二圆弧的圆心固定与第二辅助圆上，第二辅助圆与第一辅助圆同心，第二辅助圆的半径是第一辅助圆半径的三倍；所述第三圆弧与第四圆弧的切点与第三圆弧和第二圆弧的切点以经过第三圆弧圆心的半径为横轴对称；所述第四圆弧的末端设置于第二辅助圆上。
A multi-arc segment centrifugal fan blade relates to a multi-arc segment centrifugal fan blade, which is mainly used in a centrifugal fan with high pressure and small flow. The utility model improves the fan blade profile, and proposes a multi-arc centrifugal fan blade, which not only improves the aerodynamic characteristics of the fan, reduces the noise of the fan, but also improves the efficiency of the fan. The utility model comprises a blade body, which is characterized in that: a vertical auxiliary line passes through the tangent point of the first arc and the second arc, the center of the first arc is fixed on the first auxiliary circle, and the center of the first auxiliary circle fixed on the vertical auxiliary line; the center of the second arc is fixed on the second auxiliary circle, the second auxiliary circle is concentric with the first auxiliary circle, and the radius of the second auxiliary circle is three times the radius of the first auxiliary circle ; the tangent point of the third circular arc and the fourth circular arc and the tangent point of the third circular arc and the second circular arc take the radius passing through the center of the third circular arc as the horizontal axis symmetry; the end of the fourth circular arc Set on 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 multi-arc 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 multi-arc 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 multi-arc centrifugal fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208634100U (en) |
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 |
| CN110878764A (en) * | 2019-12-19 | 2020-03-13 | 上海熙众新能源技术有限公司 | A centrifugal fan impeller, a centrifugal fan and a sanitation vehicle |
| 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 (4)
| 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 |
| CN110878764A (en) * | 2019-12-19 | 2020-03-13 | 上海熙众新能源技术有限公司 | A centrifugal fan impeller, a centrifugal fan and a sanitation vehicle |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208634100U (en) | A multi-arc centrifugal fan blade | |
| CN101769266B (en) | Centrifugal fan blade | |
| CN103115021B (en) | Vane wheel device | |
| JP2012246807A (en) | Nozzle blade | |
| CN106151105B (en) | A kind of axis stream blade profile | |
| CN106762824B (en) | Axial fan three-way impeller with vein-like structure and seagull-shaped splitter blades | |
| CN103256248B (en) | Impeller and centrifugal compressor comprising same | |
| CN101109395A (en) | Turbomechanical airfoil with suction side jet | |
| CN205154739U (en) | Centrifugal impeller of calming anger of large -traffic high pressure ratio high efficiency | |
| CN205173055U (en) | Low noise that trailing edge is buckled does not have spiral case fan wheel | |
| CN101092970A (en) | New type single stage transonic axial fan | |
| CN207004920U (en) | Axial flow blower 3 d impeller with leaf vein texture and circular arc post splitterr vanes | |
| CN206929130U (en) | Axial flow blower 3 d impeller with leaf vein texture and sea-gull type splitterr vanes | |
| CN201963595U (en) | Centrifugal front or rear impeller of non-separated flow subcritical blade profile | |
| CN102758795A (en) | Volute of centrifugal fan | |
| CN104728162B (en) | Cross-flow fan blade | |
| CN113446261B (en) | Tandem stator blades of a supersonic adsorption compressor | |
| CN101109396A (en) | Turbomachinery airfoil with trailing edge jet | |
| CN208804025U (en) | A kind of efficient centrifugal blower | |
| CN205908510U (en) | Fan blade | |
| CN209959561U (en) | High pneumatic load blade of centrifugal blower impeller | |
| CN207093450U (en) | A kind of double segmental arc centrifugal fan blades | |
| CN207033836U (en) | cross-flow fan blade | |
| CN210290131U (en) | Special-shaped air outlet of Roots blower cylinder body | |
| CN206929131U (en) | Axial flow blower 3 d impeller with leaf vein texture and non-homogeneous empennage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190322 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |