CN203161649U - Variable-installation-angle axial fan - Google Patents
Variable-installation-angle axial fan Download PDFInfo
- Publication number
- CN203161649U CN203161649U CN 201320090597 CN201320090597U CN203161649U CN 203161649 U CN203161649 U CN 203161649U CN 201320090597 CN201320090597 CN 201320090597 CN 201320090597 U CN201320090597 U CN 201320090597U CN 203161649 U CN203161649 U CN 203161649U
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- angle
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- fan
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Abstract
The utility model discloses a variable-installation-angle axial fan. The diameter D of the fan is 840mm, the fan is composed of a hub and blades, the blades are efficient airfoils no more than 1*10<5> and with small relative thickness 3-5% and low Reynolds number, the blade tip installation angle is set to be adjustable at connection positions of the hub and the blades, the blade root installation angle is 18.2 degrees, the relative torsion angle is 15.5 degrees, the sweep forward angle of the blades is in a range of 0-19 degrees, the B root equals 163.11mm, the B tip equals 151.35mm, and the blade tip installation angle is 35 degrees, 37.5 degrees, 45 degrees or 50 degrees. Compared with axial fans of the same dimensions, the variable-installation-angle axial fan has the advantages of being high in efficiency, low in noise, light in structural weight and the like, and the installation angle is variable, so that the installation angle can be adjusted according to different flow requirements of customers to change the product performance.
Description
Technical field
The utility model relates to a kind of axial fan, specifically the variable axial fan of a kind of setting angle.
Background technique
Axial fan, much in daily life, be applied to produce desk fan and the ventilating fan that certain flow is purpose.The static pressure of general axis flow fan rises all smaller, fan is mainly to produce dynamic pressure, the size of general axis flow fan is all little than ventilator simultaneously, for avoiding too high noise, its tip speed is all smaller, therefore, the reynolds' number of blade real work is all less, fan efficiency is also lower, and simultaneously general flabellum all is the fixed installation angle, for different air-cooled machinery, rotating speed, differences such as heat load, required cooling air quantity, blast is all different, reach machine and fan coupling rationally, and distinct device need adopt the blast fan of different exhaust air rates and blast, axial flow fan impeller between distinct device is difficult to general like this, need die sinking again when wanting to adjust, increased project cost greatly, prolong the development time.
The model utility content
The purpose of this utility model is the problem at the prior art existence, a kind of efficient height, static pressure rising, the variable axial fan of low, the lightweight setting angle of noise are provided, can adjust established angle according to the different traffic demand of client and come this a century product performance.
The purpose of this utility model can be achieved through the following technical solutions:
The axial fan that a kind of setting angle is variable is made up of wheel hub and blade, it is characterized in that blade adopts little relative thickness 3-5%, and low reynolds number is not more than 1 * 10
5Efficient aerofoil profile, set the adjustable angle joint of blade tip established angle in the joint of wheel hub and blade, the blade root established angle is 18.2 °, relative torsional angle is 15.5 °, the sweepforward angle of blade is 0-19 °.
Fan diameter D=840mm, the blade root chord length: B root=163.11mm, B point=151.35mm, wherein the blade tip established angle is 35 °, 37.5 °, 45 ° or 50 °.
Wheel hub is made up of identical two halves, and two halves all have identical shaped a plurality of grooves, and root of blade has a plurality of groove fit of a tongue and wheel hub to adjust setting angle.
The sweepforward angle of blade is that benchmark is nonlinear change along radius with root chord mid point and rotation centerline.
The beneficial effects of the utility model: the utility model compares with the axial fan that is equal to yardstick, have advantages such as efficient height, noise are low, lightweight construction, because its setting angle is variable, therefore, can adjust established angle according to the different traffic demand of client and change product performance.
Description of drawings
Fig. 1 is the outline drawing of the variable axial fan of the utility model setting angle.
Fig. 2 is the outer chart of the utility model blade.
Fig. 3 is the sectional view of the chord of blade of Fig. 2.
Among the figure: 1, wheel hub, 2, blade, 3, torsional centre, 4, the torsional centre line, 5, sweepforward angle.
Embodiment
Below in conjunction with specific embodiment the utility model is further described.
As Fig. 1, Fig. 2 and Fig. 3.The utility model is made up of wheel hub 1 and blade 2.Wheel hub 1 links to each other with drive motor, and the outside of wheel hub 1 links to each other with blade 2, by wheel hub 1 driven by motor blade 2 is rotated by certain turning to speed.Blade 2 is main bodys of fan, and the number of its yardstick and profile and blade has the influence of decision to the performance of fan.
The effective diameter D=840mm of the utility model fan, set the adjustable angle joint of blade tip established angle in the joint of wheel hub 1 and blade 2, the blade root established angle is 18.2 °, and relative torsional angle is 15.5 °, and wherein the blade tip established angle is 35 °, 37.5 °, 45 ° or 50 °.Wheel hub 1 is made up of identical two halves, and two halves all have identical shaped a plurality of grooves, and blade 2 roots have a plurality of groove fit of a tongue and wheel hub 1 to adjust setting angle.Torsional centre line 3 lines in same blade 2 each cross section are curve, are called torsional centre line 4, and this torsional centre line 4 is positioned at the same plane parallel with plane of rotation; Have the sweepforward angle 5 of variation between the axle center of torsional centre line 4 relative fans and blade 2 root torsional centres, the sweepforward angle 5 of blade 2 is 0-19 °, with the noise of reduction fan, and has aerodynamic characteristic preferably.Blade 2 adopts little relative thickness 3-5%, and low reynolds number is not more than 1 * 10
5Efficient aerofoil profile,, this aerofoil profile has less relative thickness, thereby has alleviated structure weight.
For making blade 2 have higher static pressure liter, the solidity of unlikely too much increase blade 2 again, blade 2 chord lengths along exhibition to being nonlinear Distribution: B root=163.11mm, B point=151.35mm.This plane shape not only is conducive to alleviating of blade 2 weight, more is conducive to reduce the structure weight of wheel hub 1, and less to the adverse effect of the pneumatic efficiency of undersized fan.
Claims (4)
1. the axial fan that setting angle is variable is made up of wheel hub (1) and blade (2), it is characterized in that blade (2) adopts little relative thickness 3-5%, and low reynolds number is not more than 1 * 10
5Efficient aerofoil profile, set the adjustable angle joint of blade tip established angle in the joint of wheel hub (1) and blade (2), the blade root established angle is 18.2 °, relative torsional angle is 15.5 °, the sweepforward angle (5) of blade (2) is 0-19 °.
2. the variable axial fan of setting angle according to claim 1 is characterized in that fan diameter D=840mm, the blade root chord length: B root=163.11mm, and B point=151.35mm, wherein the blade tip established angle is 35 °, 37.5 °, 45 ° or 50 °.
3. the variable axial fan of setting angle according to claim 1, it is characterized in that wheel hub (1) is made up of identical two halves, two halves all have identical shaped a plurality of grooves, and blade (2) root has a plurality of groove fit of a tongue and wheel hub (1) to adjust setting angle.
4. the variable axial fan of setting angle according to claim 1 is characterized in that the sweepforward angle (5) of blade (2) is that benchmark is nonlinear change along radius with root chord mid point and rotation centerline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320090597 CN203161649U (en) | 2013-02-27 | 2013-02-27 | Variable-installation-angle axial fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320090597 CN203161649U (en) | 2013-02-27 | 2013-02-27 | Variable-installation-angle axial fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161649U true CN203161649U (en) | 2013-08-28 |
Family
ID=49022836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320090597 Expired - Lifetime CN203161649U (en) | 2013-02-27 | 2013-02-27 | Variable-installation-angle axial fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161649U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108268672A (en) * | 2016-12-30 | 2018-07-10 | 格朗吉斯铝业（上海）有限公司 | Aerofoil fan, design aerofoil fan three dimendional blade method and computer equipment |
| CN108431428A (en) * | 2015-11-16 | 2018-08-21 | 雷姆控股有限公司 | For the low noise of axial flow blower and rotor and efficient blade and the axial flow blower including the blade or rotor |
| CN110630559A (en) * | 2019-09-12 | 2019-12-31 | 宁波方太厨具有限公司 | Impeller for fan, fan with same and range hood |
-
2013
- 2013-02-27 CN CN 201320090597 patent/CN203161649U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108431428A (en) * | 2015-11-16 | 2018-08-21 | 雷姆控股有限公司 | For the low noise of axial flow blower and rotor and efficient blade and the axial flow blower including the blade or rotor |
| CN108268672A (en) * | 2016-12-30 | 2018-07-10 | 格朗吉斯铝业（上海）有限公司 | Aerofoil fan, design aerofoil fan three dimendional blade method and computer equipment |
| CN108268672B (en) * | 2016-12-30 | 2021-06-01 | 格朗吉斯铝业（上海）有限公司 | Axial fan, method for designing three-dimensional blade of axial fan and computer equipment |
| CN110630559A (en) * | 2019-09-12 | 2019-12-31 | 宁波方太厨具有限公司 | Impeller for fan, fan with same and range hood |
| CN110630559B (en) * | 2019-09-12 | 2021-02-23 | 宁波方太厨具有限公司 | Impeller for fan, fan with same and range hood |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |