CN202718919U - Axial flow fan impeller device of forward bent blade - Google Patents
Axial flow fan impeller device of forward bent blade Download PDFInfo
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- CN202718919U CN202718919U CN 201220374782 CN201220374782U CN202718919U CN 202718919 U CN202718919 U CN 202718919U CN 201220374782 CN201220374782 CN 201220374782 CN 201220374782 U CN201220374782 U CN 201220374782U CN 202718919 U CN202718919 U CN 202718919U
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- blade
- axial flow
- flow fan
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- clamping block
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Abstract
The utility model relates to the technical field of an axial flow fan and particularly relates to an axial flow fan impeller device of a forward bent blade, comprising a blade (1), a wheel hub (2), a clamping block (3), fixing plates (4) and a fastening piece (6), wherein the fixing plates (4) comprise an upper fixing plate and a lower fixing plate; a shaft handle of the blade (1) is mounted in the clamping block (3); the clamping block (3) is fixedly arranged between the upper fixing plate and the lower fixing plate through the fastening piece (6); the blade (1) is a sickle-shaped forward bent blade; and the shaft handle of the blade (1) is mounted in the clamping block (3) to be rotatably adjusted. Compared with the prior art, the axial flow fan impeller device of the forward bent blade has the advantages of novel and simple structure, convenience for installation, high efficiency and energy saving, and low noises; the noise is 2-3 dB lower than that of the traditional efficient fan; and the mounting angle of the axial flow fan impeller device of the forward bent blade can be adjusted in field, the use is very convenient and the axial flow fan impeller device is worthy of being popularized and applied.
Description
[technical field]
The utility model relates to the axial-flow blower technical field, specifically a kind of forward curved vane axial flow fan vane wheel device.
[background technique]
Air flow through obtain behind the impeller of axial-flow blower can head performance except with the parameter correlations such as the physical dimension of impeller, rotating speed, also relevant with the blade pattern.The blade pattern refer to blade bend towards direction, this is to be determined by the stagger angle degree of blade and exit installation angle degree.
At present, the blade pattern can be divided into these three kinds of backward bent vane (be exit installation angle degree＜90 °), radial vane (be exit installation angle degree=90 °), forward-curved blades (be exit installation angle degree＞90 °) basically.Wherein, the total head that backward bent vane produces is less, but static pressure head portion in total head is larger, and the runner energy loss is little, and efficient is higher, but the structure relative complex, cost is high; Although radial blade processing is simple, efficient is low, noise is large, uses not extensive; Compare with backward bent vane, it is large that the forward-curved blade total head is wanted, but its dynamic head portion in total head is larger, the runner energy loss is large, and efficient is not higher, however, because the forward-curved blade dimensional weight is little, low price still is widely used in the occasion of low pressure and mass flow.
In addition, the performance of energy head and the stagger angle degree of blade have much relations, and blade angle is generally 10 °～45 °, and established angle is larger, and air quantity and blast are larger.The impeller established angle has fixed and adjustable two kinds, and is fixed for the separately design of different setting angle impellers, increased manufacture cost; Adjustable then same impeller can be fit to different setting angles, has reduced manufacture cost, and adjustable impeller device setting angle adjusts before dispatching from the factory, with blast and the air quantity that adapts to particular requirement, practicality simple to operate.Therefore, if can provide the axial flow fan vane wheel device of a kind of efficient energy-saving, adjustable-angle will have very large market potential.
[model utility content]
The purpose of this utility model is exactly to solve above-mentioned deficiency, and a kind of forward curved vane axial flow fan vane wheel device is provided, and not only efficient energy-saving is simple in structure, and is easy for installation, and the setting angle of blade is adjustable.
Designed for achieving the above object a kind of forward curved vane axial flow fan vane wheel device, comprise blade 1, wheel hub 2, clamp 3, fixed plate 4 and fastening piece 6, described fixed plate 4 comprises upper mounted plate and bottom plate, the footstalk of described blade 1 is installed in the clamp 3, described clamp 3 is fixed between upper mounted plate, the bottom plate by fastening piece 6, described blade 1 is the sickleshaped forward curved vane, and the footstalk of described blade 1 is in clamp 3 interior rotatable adjustings.
The footstalk outer round surface of described blade 1 is provided with reference line 7, and described clamp 3 is provided with the angle line 8 that matches with reference line 7.
Described clamp 3 is comprised of upper clamping block 31, lower clamp 32, and the footstalk of described blade 1 is embedded in the groove 9 between upper clamping block 31 and the lower clamp 32, and described angle line 8 is arranged on the upper clamping block 31.
Described clamp 3 outsides are provided with boss 1 and boss 2 11, have T-slot 12 on the described boss 1, and described T-slot 12 is connected with spring sheet 5 with boss 2 11 places.
The utility model is compared with prior art, and novel structure is reasonable in design, because the blade of axial-flow blower is set to the sickleshaped forward curved vane, on the one hand, then owing to the increase of pressure reduction, can saves an accessory fan, and then reduce cost; On the other hand, because the efficient maximum rises to approximately 90%, can the amount of saving energy 3-5%; Therefore, compare with existing other high-performance blower fans, the utility model is not only energy-efficient, and low noise, than the low 2-3dB of traditional air-foil fan noise; In addition, forward curved vane axial flow fan vane wheel apparatus structure described in the utility model is simple, easy for installation, and setting angle can regulate at the scene, is worthy of popularization.
[description of drawings]
Fig. 1 is structural representation of the present utility model;
Fig. 2 is scheme of installation of the present utility model;
Fig. 3 is the structural representation of upper clamping block in the utility model;
Fig. 4 is the be hit by a bullet structural representation of reed of the utility model;
Among the figure: 1 is blade, and 2 is wheel hub, and 3 is clamp, and 4 is fixed plate, and 5 is spring sheet, 6 is fastening piece, and 7 is reference line, and 8 is angle line, and 9 is groove, and 10 is boss one, 11 is that boss two, 12 is T-slot, and 31 is upper clamping block, and 32 is lower clamp, and 41 is bottom plate.
[embodiment]
Further specify below below in conjunction with accompanying drawing the utility model being done:
As shown in Figures 1 and 2, the utility model comprises: blade 1, wheel hub 2, clamp 3, fixed plate 4, spring sheet 5 and fastening piece 6, fixed plate 4 comprises upper mounted plate and bottom plate 41, clamp 3 is fixed on upper mounted plate by fastening piece 6, between the bottom plate 41, clamp 3 is by upper clamping block 31, lower clamp 32 forms, blade 1 is the sickleshaped forward curved vane, the footstalk of blade 1 root is embedded in the groove 9 between upper clamping block 31 and the lower clamp 32, two places are provided with elongated reference line 7 on the footstalk outer round surface of blade 1 root, this reference line 7 is used in reference in setting angle, angle line 8 is carved with in the position of matching with reference line on the root of blade footstalk in the inboard of clamp, this angle line 8 is arranged on the upper clamping block 31, such as accompanying drawing 3, thereby the footstalk of blade 1 is in clamp 3 interior rotatable adjustings.Clamp 3 outsides are provided with boss 1 and boss 2 11, have T-slot 12 on the boss 1, and this T-slot 12 is connected with spring sheet 5 with boss 2 11 places, such as accompanying drawing 4.
In the utility model, during the impeller assembling, at first bottom plate is placed on the frock clamping, wheel hub places central authorities, again lower clamp is tipped upside down on the bottom plate, boss one on the lower clamp and boss two pass respectively the circular hole on the bottom plate, then the footstalk with root of blade places on the lower clamp groove, and upper clamping block is buckled in the footstalk of root of blade, then successively other 9 groups of blades and clamp are placed on bottom plate with same method, and another upper mounted plate is placed on whole 10 clamps, simultaneously the boss one of clamp and boss two pass the circular hole on the fixed plate, then with screw with blade, wheel hub, clamp and fixed plate pretension, at this moment, each blade can rotate freely in the cylndrical surface that per two clamps consist of, but can not do axial motion.After the adjustment peace finishes at the bottom of the established angle, with torque wrench with all screw tightenings, and all coat fastening glue in nut one side, then spring sheet is passed the T-slot on the boss one of the clamp outside, arrive the top of boss two, because the top of boss two is slightly higher than the position of the T-slot on the boss one, spring sheet is therefore by tensioner, spring sheet after the tensioner will cover before and after impeller is installed on the one hand, provide safety guarantee with securing means for the axial flow fan vane wheel device simultaneously.
The utility model is in certain laboratory in colleges and universities of Germany, by computer simulation, use fluid mechanics, a kind of forward curved vane axial flow fan vane wheel device that the principle designs such as gas dynamics go out, and use the software simulation actual operating state, this sickleshaped forward curved vane is carried out the Static and dynamic analysis of fatigue.After the computer simulation test was passed through, gravity casting went out the sickleshaped forward curved vane of a plurality of diameter D300, is assembled into the adjustable axial flow fan vane wheel device of a kind of setting angle and carries out the air performance test at the fluid test center.After prepackage prepares draught fan impeller according to the setting angle of technological requirement, pass through again blance test and overspeed test, just can be installed in the Blower Housing preparation and carry out testing property.
The utility model is respectively under 5 kinds of different leaves setting angles, this impeller is tested, test result is carried out numerical simulation according to computational fluid mechanics (CFD) method, simulates that diameter is the performance curve with this sickleshaped forward curved vane axial flow fan vane wheel device of 1600CM under rotating speed 1000rpm; Three kinds of diameters of other three kinds of impeller diameters are respectively 900CM, 1250CM, the air quantity of 1600CM impeller and static pressure.Wherein, the forward curved vane axial flow fan vane wheel device of diameter 1600CM is installed in certain air for air conditioning in textile factories system and carries out testing property as gas fan, the result that numerical simulation is carried out in the laboratory is verified at the scene: static pressure has risen 12%, dynamic pressure has risen 27.3%, air quantity has risen 12.8%, and power consumption has only risen 0.8%, simultaneously reducing noise 1.7-3.1dB, and 1 ° of the every reduction of setting angle can reduce power consumption about 5%.
In addition, air-supply and return air are cotton mill and cloth factory two large power consumption master operations, in the cotton mill, this power consumption accounts for whole air conditioning and filtration system about 55%, and at Bu Chang, this ratio is up to 75%, compare with the traditional radial vane in other high-end blower fans, forward curved vane axial flow fan vane wheel device described in the utility model on the one hand since the increase of pressure reduction can save an accessory fan and then reduce cost, on the other hand since the efficient maximum rise to approximately 90% can the amount of saving energy 3-5%.
The utility model is not subjected to the restriction of above-mentioned mode of execution; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (4)
1. forward curved vane axial flow fan vane wheel device, comprise blade (1), wheel hub (2), clamp (3), fixed plate (4) and fastening piece (6), described fixed plate (4) comprises upper mounted plate and bottom plate, the footstalk of described blade (1) is installed in the clamp (3), described clamp (3) is fixed on upper mounted plate by fastening piece (6), between the bottom plate, it is characterized in that: described blade (1) is the sickleshaped forward curved vane, the rotatable adjusting in clamp (3) of the footstalk of described blade (1).
2. forward curved vane axial flow fan vane wheel device as claimed in claim 1, it is characterized in that: the footstalk outer round surface of described blade (1) is provided with reference line (7), and described clamp (3) is provided with the angle line (8) that matches with reference line (7).
3. forward curved vane axial flow fan vane wheel device as claimed in claim 1 or 2, it is characterized in that: described clamp (3) is comprised of upper clamping block (31), lower clamp (32), the footstalk of described blade (1) is embedded in the groove (9) between upper clamping block (31) and the lower clamp (32), and described angle line (8) is arranged on the upper clamping block (31).
4. forward curved vane axial flow fan vane wheel device as claimed in claim 3, it is characterized in that: described clamp (3) outside is provided with boss one (10) and boss two (11), have T-slot (12) on the described boss one (10), described T-slot (12) locates to be connected with spring sheet (5) with boss two (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220374782 CN202718919U (en) | 2012-07-31 | 2012-07-31 | Axial flow fan impeller device of forward bent blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220374782 CN202718919U (en) | 2012-07-31 | 2012-07-31 | Axial flow fan impeller device of forward bent blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202718919U true CN202718919U (en) | 2013-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220374782 Expired - Fee Related CN202718919U (en) | 2012-07-31 | 2012-07-31 | Axial flow fan impeller device of forward bent blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202718919U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748327A (en) * | 2012-07-31 | 2012-10-24 | 洛瓦空气工程(上海)有限公司 | Axial-flow blower impeller device with sickle-shaped forward-bending blade |
| CN104141634A (en) * | 2013-05-08 | 2014-11-12 | 鸿富锦精密工业（深圳）有限公司 | Fan |
-
2012
- 2012-07-31 CN CN 201220374782 patent/CN202718919U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748327A (en) * | 2012-07-31 | 2012-10-24 | 洛瓦空气工程(上海)有限公司 | Axial-flow blower impeller device with sickle-shaped forward-bending blade |
| CN104141634A (en) * | 2013-05-08 | 2014-11-12 | 鸿富锦精密工业（深圳）有限公司 | Fan |
| CN104141634B (en) * | 2013-05-08 | 2016-12-21 | 青岛玉兰祥商务服务有限公司 | Fan |
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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 |
Granted publication date: 20130206 Termination date: 20140731 |
|
| EXPY | Termination of patent right or utility model |