CN205349856U - Torsional angle type aluminum alloy blade - Google Patents
Torsional angle type aluminum alloy blade Download PDFInfo
- Publication number
- CN205349856U CN205349856U CN201620093930.0U CN201620093930U CN205349856U CN 205349856 U CN205349856 U CN 205349856U CN 201620093930 U CN201620093930 U CN 201620093930U CN 205349856 U CN205349856 U CN 205349856U
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- blade
- torsional angle
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- angle
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Abstract
The utility model discloses a torsional angle type aluminum alloy blade, the cross -section geometry of the different positions of blade is the same with the size, and the blade both ends have opposite direction's torsional angle. The utility model discloses keep the mounting dimension and the mode of original fan, make the rotatory certain angle of blade section bar under the circumstances that does not change transmission system and power supply, can reach the required amount of wind and wind pressure under lower rotational speed, the required power of fan is less, has the advantage efficient, that the noise is little, when the same blade angle, makes the increase of the amount of wind and the wind pressure of its fan, and the performance is better.
Description
Technical field
This utility model relates to fan blade technical field, is specifically related to a kind of torsional angle type aluminium alloy vane.
Background technology
As shown in Figures 1 to 3, existing aluminium alloy vane is once extruded, is in operation and requires that the power of blower fan is higher, and noise is bigger.Owing to the tangential velocity at blade different radii place is different, so speed triangle also has difference, the inflow angle at blade root place is maximum, and blade tip place inflow angle is minimum.And the angle of attack of foline deducts established angle equal to inflow angle, make each foline of blade all in optimum performance, their angle of attack should difference little, therefore the established angle being accomplished by blade root place is big, the established angle at blade tip place is little, why this namely need different torsional angles on blade, makes vane section bar rotate to an angle when not changing drive system and power source thus increasing the air quantity of blower fan, blast.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of band torsional angle blade, when identical blade angle so that it is the air quantity of blower fan and the performance of blast be a kind of torsional angle type aluminium alloy vane better.
For solving above-mentioned technical problem, technical solution adopted in the utility model is:
A kind of torsional angle type aluminium alloy vane, including extruding one-time formed closed hollow blade, it is characterised in that: the cross-sectional geometry of described blade diverse location is identical with size, and blade two ends are with rightabout torsional angle；By the geometry in its cross section, the geometry of described blade determines that the anglec of rotation with torsional angle determines:
A, blade geometry determined by parameters described below:
Launching in plane with front end, cross section for the rectangular coordinate system of initial point in each cross section, in section edges, the coordinate figure of respective point is:
Wherein b is the maximum chord length in cross section；
B, torsional angle the anglec of rotation be 10 °～16 °.
Further technical scheme is in that: the anglec of rotation of described blade two ends torsional angle is identical.
Further technical scheme is in that: described blade two ends are identical or different with the length of torsional angle, and two ends are with the length that length summation is blade of torsional angle.
Adopt and have the beneficial effects that produced by technique scheme:
Keep installation dimension and the mode of original blower fan, vane section bar is made to rotate to an angle when not changing drive system and power source, required air quantity and blast can be issued at relatively low rotating speed, blower fan power demand is less, there is efficiency height, advantage that noise is little, when identical blade angle so that it is the air quantity of blower fan and the increase of blast, performance is better.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
Fig. 1 is the main TV structure schematic diagram of the aluminium alloy vane of prior art；
Fig. 2 is the mansion TV structure schematic diagram of the aluminium alloy vane of prior art；
The cross section that Fig. 3 is the aluminium alloy vane of prior art shows structure meaning view；
Fig. 4 is main TV structure schematic diagram of the present utility model；
Fig. 5 is mansion of the present utility model TV structure schematic diagram；
Fig. 6 is that cross section of the present utility model shows structure meaning view；
Fig. 7 is this utility model blade profile expanded view.
Wherein: 1-blade, 2-torsional angle.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Elaborate a lot of detail in the following description so that fully understanding this utility model, but this utility model can also adopt other to be different from alternate manner described here to be implemented, those skilled in the art can do similar popularization when without prejudice to this utility model intension, and therefore this utility model is not by the restriction of following public specific embodiment.
As also shown in e.g. figs. 4-7, a kind of torsional angle type aluminium alloy vane, including extruding one-time formed closed hollow blade 1, the cross-sectional geometry of described blade 1 diverse location is identical with size, and blade 1 two ends are with rightabout torsional angle 2；By the geometry in its cross section, the geometry of described blade 1 determines that the anglec of rotation with torsional angle 2 determines:
A, blade 1 geometry determined by parameters described below:
Launching in plane with front end, cross section for the rectangular coordinate system of initial point in each cross section, in section edges, the coordinate figure of respective point is:
Wherein b is the maximum chord length in cross section；
B, torsional angle 2 the anglec of rotation be 10 °～16 °.
Further preferred that the anglec of rotation of described blade 1 two ends torsional angle 2 is identical, described blade 1 two ends are identical or different with the length of torsional angle 2, and two ends are with the length that length summation is blade 1 of torsional angle 2.
This utility model keeps installation dimension and the mode of original blower fan, vane section bar is made to rotate to an angle when not changing drive system and power source, required air quantity and blast can be issued at relatively low rotating speed, blower fan power demand is less, there is efficiency height, advantage that noise is little, when identical blade angle so that it is the air quantity of blower fan and the increase of blast, performance is better.
Claims (3)
1. a torsional angle type aluminium alloy vane, including extruding one-time formed closed hollow blade (1), it is characterized in that: the cross-sectional geometry of described blade (1) diverse location is identical with size, blade (1) two ends are with rightabout torsional angle (2)；By the geometry in its cross section, the geometry of described blade (1) determines that the anglec of rotation with torsional angle (2) determines:
A, blade (1) geometry determined by parameters described below:
Launching in plane with front end, cross section for the rectangular coordinate system of initial point in each cross section, in section edges, the coordinate figure of respective point is:
Wherein b is the maximum chord length in cross section；
B, torsional angle (2) the anglec of rotation be 10 °～16 °.
2. a kind of torsional angle type aluminium alloy vane according to claim 1, it is characterised in that: the anglec of rotation at described blade (1) two ends torsional angle (2) is identical.
3. a kind of torsional angle type aluminium alloy vane according to claim 1, it is characterized in that: described blade (1) two ends are identical or different with the length of torsional angle (2), two ends are with the length that length summation is blade (1) of torsional angle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620093930.0U CN205349856U (en) | 2016-01-30 | 2016-01-30 | Torsional angle type aluminum alloy blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620093930.0U CN205349856U (en) | 2016-01-30 | 2016-01-30 | Torsional angle type aluminum alloy blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205349856U true CN205349856U (en) | 2016-06-29 |
Family
ID=56182212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620093930.0U Expired - Fee Related CN205349856U (en) | 2016-01-30 | 2016-01-30 | Torsional angle type aluminum alloy blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205349856U (en) |
-
2016
- 2016-01-30 CN CN201620093930.0U patent/CN205349856U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160629 Termination date: 20200130 |