CN201209592Y - Large-sized hollow low noise axial fan blade - Google Patents
Large-sized hollow low noise axial fan blade Download PDFInfo
- Publication number
- CN201209592Y CN201209592Y CNU2008200234288U CN200820023428U CN201209592Y CN 201209592 Y CN201209592 Y CN 201209592Y CN U2008200234288 U CNU2008200234288 U CN U2008200234288U CN 200820023428 U CN200820023428 U CN 200820023428U CN 201209592 Y CN201209592 Y CN 201209592Y
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- blade
- fan blade
- type low
- low noise
- noise axial
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Abstract
The utility model discloses a large-sized type low-noise axial-flow fan blade which is a forward swept type blade and in an acute angle of 20 to 40 DEG. The low-noise axial-flow fan blade is in a surface shape both in the radial direction and the tangential direction; each cycle section of the blade is in an airfoil shape, and the relative thickness of the blade is 4 to 12 percent and is thin to thick gradually from the blade top to the blade root. The large-sized type low-noise axial-flow fan blade has the main points that the blade is in a hollow structure and formed by the combination of an upper piece and a lower piece through a connector; hollow cavities between the blades are provided with packing layers; and net-shaped reinforcing ribs are evenly arranged on the inner surfaces of the upper piece and the lower piece. The large-size type low-noise axial-flow fan blade not only reduces the weight of the blades but also increases the strength of the blades, especially reducing the energy consumption and the noise of the fan further, greatly improving the reliability of the large-sized type low-noise axial-flow fan and prolonging the service life of the fan. The large-sized type low-noise axial-flow fan blade is an ideal new-generation low-noise large-sized axial-flow fan blade.
Description
Affiliated technical field
The utility model relates to the blower fan technical field, specifically a kind of blade of large axial flow fan.
Background technique
At present, in industries such as power station, weaving, the application of various large axial flow fans is very extensive.But, existing large axial flow fan, because the diameter of its impeller is very big, be by low noise wing molded breadth Blade Design, the blade of making is too heavy, and the reliability of blower fan also decreases.And the manufacture cost of blower fan also increases, and this class blower fan according to conventional design can satisfy low noise technical requirements far from.
Summary of the invention
In order to reduce noise and energy consumption, overcome the deficiency that existing large axial flow fan structurally exists, it is a kind of reasonable in design that the utility model provides, the large-scale hollow type low noise axial fan blade of novel structure.
The technological scheme that its technical problem that solves the utility model adopts is: this large-scale hollow type low noise axial fan blade, and its blade is a sweepforward, is 20 °～40 ° acute angle shape; Blade radially and tangential both direction all be curve form, each circumference tangent plane of blade is a wing blade, its relative thickness is 4%～12%, from leaf push up to blade root by Bao Jianhou; Be that mainly said blade is a hollow structure, combine by link with following sheet, in the cavity in the middle of the blade, be provided with packed layer by last slice; Be to guarantee the intensity of blade, on the internal surface of last and following sheet, be provided with the stiffening rib of netted shape equably, the stiffening rib of blade also can be arranged on individually slice or the internal surface of time sheet on; Said link be arranged on slice and following plate inner surface on hanging hook assembly, with last slice, sheet fastens and forms down, then by be arranged on last slice and following sheet on the installation through hole, use bolt, nut or rivet are combined into one two; Be provided with the petiole mounting groove in the root of blade inboard, by the petiole mounting groove petiole be fixed on the blade, this large-scale blade that is connected with wheel hub can be two, three or four; Last or down the outer rim of sheet be provided with the established angle machining allowance section of elongation, the length that established angle machining allowance section is stretched out is 10～30mm.
The utility model compared with prior art gets major advantage, and novel structure is reasonable in design.Because the Blade Design of large axial flow fan is become hollow structure, be provided with netted shape stiffening rib at the internal surface of sheet up and down, and in the cavity of blade, polyurethane foam be set, not only increased the intensity of blade, alleviate the weight of blade, and improved the reliability of large axial flow fan greatly.Simultaneously, further reduce the energy consumption and the noise of blower fan, saved manufacture cost, prolonged the working life of blower fan.Therefore, the large axial flow fan that adopts this hollow blade to produce is desirable low noise large axial flow fan of new generation.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the utility model hollow structure schematic representation;
Fig. 3 is the utility model reinforcing rib structure schematic representation;
Fig. 4 is the utility model petiole linkage structure schematic representation;
Fig. 5 is that the hook of one of the utility model link is set up structural representation;
Fig. 6 is the structural representation that the utility model uses the link combination;
Fig. 7 is the structural representation that the utility model outer rim machining allowance section is stretched out.
Among the figure 1. last slice, 2. stiffening rib, 3. link, 4. packed layer 5. descends sheet, 6. hanging hook assembly, 7. petiole mounting groove, 8. established angle machining allowance section, 9. petiole.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in detail:
As shown in Figure 1, 2, this large-scale hollow type axial-flow fan blade, this blade is a sweepforward, is 30 ° acute angle shape, leaf push up to blade root highly for 613mm, leaf leading edge to the length of leaf trailing edge is 1058mm; Blade radially all is being curve form with tangential both direction; Each circumference tangent plane of blade is a wing blade, and its relative thickness is 4%～12%, from leaf push up to blade root by Bao Jianhou; Be that mainly said blade is a hollow structure, by last slice 1 and 5 two half sheets of following sheet combine by link 3.In the cavity in the middle of the blade, be filled with and reduce polyurethane foam packed layer 4 noise, that weight is low weight.
Shown in Fig. 3,4, be to guarantee the intensity of blade, on the internal surface of last 1 and following sheet 5, be provided with the stiffening rib 2 of netted shape equably.Be provided with petiole mounting groove 7 in the root of blade inboard, and petiole 9 be fixed on the blade by petiole mounting groove 7, screw bolt and nut.The large-scale blade that is connected with wheel hub is four or three, two.
Shown in Fig. 5,6, said link 3 comprises two-part.At first for be arranged on slice 1 and following sheet 5 internal surfaces on hanging hook assembly 6, two vane group are synthesized the blade of hollow structure by hanging hook assembly 6.And then by be arranged on last slice 1 and following sheet 5 on the installation through hole, use bolt, nut with last slice 1 and following sheet 5 tightly be fixed into one.
As shown in Figure 7, be provided with established angle machining allowance section 8 in the following outer rim of sheet 5, being retained in down the length that the established angle machining allowance section 8 on the sheet 5 stretches out is 10mm.
Claims (9)
1, a kind of large-scale hollow type low noise axial fan blade, blade is a sweepforward, be 20 °～40 ° acute angle shape, blade radially all is being curve form with tangential both direction, each circumference tangent plane of blade is a wing blade, its relative thickness is 4%～12%, from leaf push up to blade root by Bao Jianhou; It is characterized in that: described blade is a hollow structure, is combined by link (3) by last slice (1) and following sheet (5), is provided with stiffening rib (2) in the blade equably.
2, a kind of large-scale hollow type low noise axial fan blade according to claim 1 is characterized in that: be provided with packed layer (4) in the cavity in the middle of the blade.
3, a kind of large-scale hollow type low noise axial fan blade according to claim 1 is characterized in that: said link is that (3) are arranged on the installation through hole on slice (1), the following sheet (5).
4, a kind of large-scale hollow type low noise axial fan blade according to claim 3, it is characterized in that: said link (3) also comprises the hanging hook assembly (6) that is arranged on slice (1) and following sheet (5) internal surface.
5, a kind of large-scale hollow type low noise axial fan blade according to claim 1 is characterized in that: be provided with petiole mounting groove (7) in the root of blade inboard and pass through fixedly petiole (9) of petiole mounting groove (7).
6, a kind of large-scale hollow type low noise axial fan blade according to claim 1, it is characterized in that: said stiffening rib (2) is separately positioned on the internal surface of slice (1) and following sheet (5).
7, a kind of large-scale hollow type low noise axial fan blade according to claim 1, it is characterized in that: said stiffening rib (2) can be arranged on separately on the internal surface of (1).
8, a kind of large-scale hollow type low noise axial fan blade according to claim 1, it is characterized in that: said stiffening rib (2) can be arranged on down separately on the internal surface of sheet (5).
9, a kind of large-scale hollow type low noise axial fan blade according to claim 1, it is characterized in that last or down the outer rim of sheet be provided with the established angle machining allowance section (8) of elongation, the length that established angle machining allowance section (8) is stretched out is 10～30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200234288U CN201209592Y (en) | 2008-06-06 | 2008-06-06 | Large-sized hollow low noise axial fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200234288U CN201209592Y (en) | 2008-06-06 | 2008-06-06 | Large-sized hollow low noise axial fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209592Y true CN201209592Y (en) | 2009-03-18 |
Family
ID=40480326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200234288U Expired - Fee Related CN201209592Y (en) | 2008-06-06 | 2008-06-06 | Large-sized hollow low noise axial fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201209592Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521454A (en) * | 2013-07-29 | 2014-01-22 | 上海睿丰自动化系统有限公司 | Low-noise sorting system |
| CN106224166A (en) * | 2016-08-29 | 2016-12-14 | 姜志敏 | A kind of temperature difference electricity generation device |
| CN106438470A (en) * | 2016-11-03 | 2017-02-22 | 合肥华凌股份有限公司 | Axial-flow fan and refrigeration equipment |
| CN107965468A (en) * | 2017-07-10 | 2018-04-27 | 常州信息职业技术学院 | A kind of flabellum blade construction |
-
2008
- 2008-06-06 CN CNU2008200234288U patent/CN201209592Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521454A (en) * | 2013-07-29 | 2014-01-22 | 上海睿丰自动化系统有限公司 | Low-noise sorting system |
| CN106224166A (en) * | 2016-08-29 | 2016-12-14 | 姜志敏 | A kind of temperature difference electricity generation device |
| CN106438470A (en) * | 2016-11-03 | 2017-02-22 | 合肥华凌股份有限公司 | Axial-flow fan and refrigeration equipment |
| CN106438470B (en) * | 2016-11-03 | 2019-03-29 | 合肥华凌股份有限公司 | Aerofoil fan and refrigeration equipment |
| CN107965468A (en) * | 2017-07-10 | 2018-04-27 | 常州信息职业技术学院 | A kind of flabellum blade construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WEIHAI CREDIT FAN VENTILATOR CO., LTD. Free format text: FORMER OWNER: WEIHAI CREDIT FAIR FAN CO., LTD. Effective date: 20120424 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 264210 WEIHAI, SHANDONG PROVINCE TO: 264200 WEIHAI, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120424 Address after: 264200 science and technology new town, Weihai hi tech Industrial Development Zone, Shandong, Weihai Patentee after: Weihai Credit Fan Ventilator Co., Ltd. Address before: 264210, Weihai, Shandong Province town of Weihai light Phil fan Co., Ltd. Patentee before: Weihai Credit Fair Fan Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20140606 |