CN101408194B - Axial flow fan - Google Patents
Axial flow fan Download PDFInfo
- Publication number
- CN101408194B CN101408194B CN2007101929301A CN200710192930A CN101408194B CN 101408194 B CN101408194 B CN 101408194B CN 2007101929301 A CN2007101929301 A CN 2007101929301A CN 200710192930 A CN200710192930 A CN 200710192930A CN 101408194 B CN101408194 B CN 101408194B
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- CN
- China
- Prior art keywords
- blade
- axial flow
- flow fan
- filling component
- tape
- 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
- 230000011218 segmentation Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000012856 packing Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The invention relates to an axial flow type fan which comprises a hub and a plurality of blades that are evenly distributed on the hub, wherein, the blade are provided with a wing-shaped profiles and each blade is installed on the hub by torsades, wherein, each blade is hollow; moreover, at least part of the torsade is inserted into the blade, and at least one fastener passes through a corresponding opening in the torsade and reaches an opposite blade surface from the blade surface, wherein, the corresponding opening in the torsade is a narrow groove, therefore, the inclination angle of the blade can be adjusted by rotating blades relative to the torsades and along the axial lines of the blades.
Description
Technical field
The present invention relates to a kind of axial flow fan, it comprises a wheel hub and a plurality of blade on wheel hub arranged evenly equably, and wherein blade has aerofoil profile.Such blade typically has 5 meters diameter.For steering flow, this fan is in the ring that preferably has a bell import.
Background technique
This fan is for people know, and market competition is very fierce.Even if a little reduction also can make market share increase on the cost.
This fan of knowing has very many parts, and a part of manufacture cost in these parts is very high.
Fig. 1 shows the exploded view of fan of the prior art.This fan comprises the wheel hub 1 that mounting plate 2 is housed above.Being connected through six bolts 3, packing ring 4 and sleeve pipe 5 of mounting plate 2 and wheel hub 1 realizes.Each blade 6 with aerofoil profile all is contained on the mounting plate 2.For this connection, cast metal piece 7 is bolted on the mounting plate 2 through bolt 8 and packing ring 9.This cast metal piece 7 comprises that an elasticity inserting member 10 is with vibration damping.Be provided with the hole that bolt 11 can pass in the elasticity inserting member 10, Y-piece 12 is connected with elasticity inserting member 10.Then, utilize plate 14, thread head 15, packing ring 16 and nut 17 that metal tube 13 is locked on the Y-piece 12.
Pass fan center for fear of air-flow at last, can cover plate 23 be placed in the position of cast metal piece 7.
Clearly, according to fan of the prior art shown in Figure 1, assembling a desk fan needs a large amount of parts.On the other hand, ceiling fan of the prior art, its blade is to be installed on the wheel hub through tape.Though this has reduced cost, yet can not carry out any adjusting to the position and the angle of blade with respect to wheel hub.In addition, the blade of existing ceiling fan is the planar blade with aerofoil profile.
Summary of the invention
Therefore, thus the object of the invention just provides a kind of axial flow fan that less parts has reduced manufacture cost that has, and necessary adjusting also is provided simultaneously.
Can achieve the above object according to axial flow fan of the present invention, it is characterized in that, each blade all is a hollow, and tape is inserted in the blade at least in part and
At least one fastening piece passes the relative blade surface of corresponding opening arrival the tape from blade surface,
Wherein, corresponding opening is a slit in the tape, to such an extent as to the inclination of blade can be regulated.
Blade installation used tape to the wheel hub has also been played damping effect, is to come vibration damping through the rubber in the cast metal piece 7 in the equipment of existing technology.In addition, the cast metal piece 7 of the manufacture cost of tape in the equipment of existing technology and corresponding Y-piece 12.Through will be at least the part tape be installed in the blade, thereby saved the pipe 13 additional in the existing technology and the needs of plate 14 and corresponding build-up member.
In addition, through the tape that provides to have slot-shaped openings, can also regulate the blade lean degree.Therefore, through such design, thereby just obtained a kind of axial flow fan that less parts has reduced manufacture cost that has, the adjusting that also keeps necessary is simultaneously selected, especially to the adjusting of blade lean degree.
In a preferred embodiment of fan of the present invention, tape is L-shaped basically.
Wheel hub is cylindrical basically in a further advantageous embodiment, and the short segmentation of L shaped tape is concave shape, and it adapts to the peripheral wall of wheel hub.Correspondingly, L shaped tape can directly be installed on the wheel hub, thereby has saved special mounting plate.
In another embodiment of axial flow fan of the present invention, for each blade provides a mounting plate with flat installation surface, the short segmentation of L shaped tape is installed on this flat installation surface on wheel hub.Though an additional mounting plate must be provided, it need not become concave shape with the short segment design of L shaped tape.Necessary installation surface is a little plate with recessed face and opposing flat surfaces.According to manufacture cost, can select to have the embodiment of short segmentation of embodiment or the concave shape of mounting plate.
Preferably, filling component injects in the hollow blade, and this filling component can be very simple parts, and cylindrical body for example is because filling component only need bear the fastening force of the fastening piece that passes blade and L shaped tape.
In another embodiment of axial flow fan of the present invention, filling component is cylinder type basically, and the tape end that is inserted in the hollow blade is concave shape.Because the concave shape of tape, tape can be guided along cylindrical parts, has so just guaranteed to regulate the blade lean degree with the center of circle of cylindrical filling component.
In another embodiment of axial flow fan of the present invention, filling component comprises two semicolumn parts, and it is separately positioned on the both sides of the tape end that is inserted in the hollow blade.This just provides an axial flow fan of the present invention of more simplifying, because the tape end that is inserted in the hollow blade can keep smooth, has also guaranteed the center adjustment of inclination simultaneously.
In another embodiment of axial flow fan of the present invention, the local at least outer surface with filling component of inwall that wherein inserts the cavity of filling component is complementary.The center adjustment that so further helps the blade lean degree avoids occurring the situation that blade does not align with wheel hub.
Preferably, filling component is placed between the slot-shaped openings.Because need not have the hole in the filling component, can reduce cost like this.In addition, can also strengthen the clamping effect.
Also can be provided with slot-shaped openings in the blade, with the adjusting vane tilt angle.In addition, axial flow fan also comprises a circular cowling that is contained in coaxially on the wheel hub.This circular cowling will guide the air that is promoted by fan blade.
Description of drawings
Above-mentioned and other advantage of the present invention will be in conjunction with the accompanying drawings.
Fig. 1 is the exploded view of the axial flow fan of existing technology.
Fig. 2 is an embodiment's of an axial flow fan of the present invention exploded view.
Fig. 3 is second embodiment of axial flow fan of the present invention.
Fig. 4 is the 3rd embodiment of axial flow fan of the present invention.
Embodiment
Fig. 2 shows axial flow fan 30 of the present invention.This axial flow fan 30 comprises a wheel hub 31 that blade 32 is housed on it.L shaped tape 33 has a short segmentation 34 that is concave shape, and this segmentation 34 directly is bolted on the cylindrical outer surface of wheel hub 31 through bolt 35 and packing ring 36.Long segmentation 37 local bucklings of L shaped tape 33, and slot-shaped openings 38 is provided.The curved section of long segmentation 37 is inserted in the hollow blade 32.Also can the long segmentation of L shaped tape be installed in the outside of blade.Filling component 47 also injects in the blade 32, then, inserting bolt 39, thus L shaped tape 33, filling component 47 and blade 32 are linked together.Utilize nut 40 and packing ring 41 that bolt 39 is fastening.
Utilize end cap 42 and 43 with hollow blade 32 sealings.
At last, utilize bolt 45 and packing ring 46 that closure plate 44 is connected on the wheel hub 31.Closure plate 44 stops air-flow to pass the center of axial flow fan.
Prior art embodiments among embodiment among Fig. 2 and Fig. 1 is compared, can know intuitively and see, the invention provides an embodiment who more simplifies, reduced manufacture cost.Equally, in the embodiments of the invention, do not use the parts that those are difficult to make, for example casting, slug that forge or machining.
Fig. 3 shows second embodiment of axial flow fan 50 of the present invention.This axial flow fan 50 has a wheel hub 51 and a plurality of blades 52.These blades 52 are installed on the wheel hub 51 through tape 53.One end of flat tape 53 passes through bolt 54 bolts on wheel hub 51.An other end 55 of tape 53 is concave shape and slot-shaped openings 56 is provided.End 55 is inserted in the hollow blade 52 with filling component 57.End 55 is installed in the hollow blade 52 through bolt 58 with filling component 57.
Slot-shaped openings 56 makes the tilt angle of blade 52 to be conditioned.Because slot-shaped openings 56, blade 52 can be together with respect to tape 53 rotations with filling component 57.In order to assist the rotation of blade, the upper surface part of filling component 57 is a cylinder type, and the inwall 59 of blade 52 hollow cavities is the cylindrical surface of concave shape.
Fig. 4 shows the 3rd embodiment's of axial flow fan of the present invention part.In this embodiment, hollow blade 60 is installed on the wheel hub (not shown) through a flat tape 61.Flat tape 61 both sides are provided with semicolumn filling part 62,63.Flat tape 61 and two semicolumn filling parts 62,63 are inserted in the hollow blade 60, make filling part 62 contact with inwall 64, and filling part 63 contact with the inwall 65 of concave shape.
Be provided with two slot-shaped openings 66 in the tape 61, bolt 67 extends through slot-shaped openings 66, and blade is connected on the tape 61.Add upper gasket 68 and nut 69, hollow blade 60 can be connected on the mounting bar 61 with the tilt angle of an expectation.
Claims (17)
1. an axial flow fan comprises a wheel hub and a plurality of blade on wheel hub arranged evenly equably, and wherein blade has aerofoil profile,
Each blade all is installed on the wheel hub through tape,
It is characterized in that each blade all is a hollow, and said tape is inserted in the blade at least in part and
At least one fastening piece passes the relative blade surface of corresponding opening arrival the tape from blade surface,
Wherein, corresponding opening is a slit in the tape, so that can be through coming the adjusting vane tilt angle along axis of runner blade with respect to said tape rotation blade.
2. axial flow fan as claimed in claim 1, wherein said tape is L-shaped.
3. like the said axial flow fan of claim 2, wherein wheel hub is cylindrical, and the weak point of L shaped tape is segmented into concave shape, and it adapts to the peripheral wall of wheel hub.
4. like the said axial flow fan of claim 2, wherein, for each blade provides a mounting plate with flat installation surface, and wherein the short segmentation of L shaped tape is contained on the said flat installation surface on wheel hub.
5. like any described axial flow fan of claim in front, wherein filling component is inserted in the hollow blade.
6. like the said axial flow fan of claim 5, wherein contiguous said at least one fastening piece of filling component is placed.
7. axial flow fan as claimed in claim 6, wherein filling component is cylindrical, and the tape end that is inserted in the hollow blade is concave shape.
8. axial flow fan as claimed in claim 7, the local at least outer surface with filling component of inwall of cavity that wherein inserts filling component is suitable.
9. axial flow fan as claimed in claim 6, wherein filling component comprises two semicolumn parts that are arranged on the both sides, tape end that are inserted in the hollow blade.
10. axial flow fan as claimed in claim 9, the local at least outer surface with filling component of inwall of cavity that wherein inserts filling component is suitable.
11. axial flow fan as claimed in claim 6, the local at least outer surface with filling component of inwall of cavity that wherein inserts filling component is suitable.
12. axial flow fan as claimed in claim 5, wherein filling component is cylindrical, and the tape end that is inserted in the hollow blade is concave shape.
13. axial flow fan as claimed in claim 12, the local at least outer surface with filling component of inwall of cavity that wherein inserts filling component is suitable.
14. axial flow fan as claimed in claim 5, filling component comprise two semicolumn parts that are arranged on the both sides, tape end that are inserted in the hollow blade.
15. axial flow fan as claimed in claim 14, the local at least outer surface with filling component of inwall of cavity that wherein inserts filling component is suitable.
16. axial flow fan as claimed in claim 5, the local at least outer surface with filling component of inwall of cavity that wherein inserts filling component is suitable.
17. axial flow fan as claimed in claim 1 also comprises a coaxial circular cowling that is installed on the wheel hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101929301A CN101408194B (en) | 2007-10-10 | 2007-10-10 | Axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101929301A CN101408194B (en) | 2007-10-10 | 2007-10-10 | Axial flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101408194A CN101408194A (en) | 2009-04-15 |
| CN101408194B true CN101408194B (en) | 2012-08-01 |
Family
ID=40571355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101929301A Expired - Fee Related CN101408194B (en) | 2007-10-10 | 2007-10-10 | Axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101408194B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8157524B2 (en) * | 2009-12-03 | 2012-04-17 | Robert Bosch Gmbh | Axial flow fan with hub isolation slots |
| CN105332949A (en) * | 2015-11-27 | 2016-02-17 | 卧龙电气南阳防爆集团股份有限公司 | Steel blade of axial flow fan and integral forming technique of blade shells of steel blade |
| CN105744803A (en) * | 2016-03-21 | 2016-07-06 | 联想(北京)有限公司 | Electronic equipment |
| CN107542684B (en) * | 2016-06-28 | 2020-05-05 | 建准电机工业股份有限公司 | Ceiling fan |
| CN106168227A (en) * | 2016-08-17 | 2016-11-30 | 江苏兆胜空调有限公司 | A kind of extruded hollow aluminium section bar airfoil vanes impeller |
| CN106168228A (en) * | 2016-08-17 | 2016-11-30 | 江苏兆胜空调有限公司 | A kind of high-efficient low-noise axial wheel |
| RU190417U1 (en) * | 2019-04-26 | 2019-07-01 | Общество с ограниченной ответственностью Специальное Конструкторское Бюро "Мысль" | WORKING WHEEL AXIAL FAN |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1165738A (en) * | 1966-11-01 | 1969-10-01 | Cooling Dev Ltd | Improvements in and relating to Fan-Type Impellers and to Blade Assemblies for use therewith |
| US3480373A (en) * | 1966-11-01 | 1969-11-25 | Cooling Dev Ltd | Fans |
| US4053259A (en) * | 1974-10-31 | 1977-10-11 | Axial International Establishment | Axial fan adjustable pitch connectable blades |
| CN2605405Y (en) * | 2003-04-03 | 2004-03-03 | 广州马利新菱冷却塔有限公司 | Wing-type fan for cooling |
| CN2837566Y (en) * | 2005-10-24 | 2006-11-15 | 姜汉勇 | Wing-shaped blade of cooling tower fan |
-
2007
- 2007-10-10 CN CN2007101929301A patent/CN101408194B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1165738A (en) * | 1966-11-01 | 1969-10-01 | Cooling Dev Ltd | Improvements in and relating to Fan-Type Impellers and to Blade Assemblies for use therewith |
| US3480373A (en) * | 1966-11-01 | 1969-11-25 | Cooling Dev Ltd | Fans |
| US4053259A (en) * | 1974-10-31 | 1977-10-11 | Axial International Establishment | Axial fan adjustable pitch connectable blades |
| CN2605405Y (en) * | 2003-04-03 | 2004-03-03 | 广州马利新菱冷却塔有限公司 | Wing-type fan for cooling |
| CN2837566Y (en) * | 2005-10-24 | 2006-11-15 | 姜汉勇 | Wing-shaped blade of cooling tower fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101408194A (en) | 2009-04-15 |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20170310 Address after: Italy Varese Patentee after: Gathy LLC Address before: Holland Overijssel Patentee before: Howden Netherlands B.V. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 |
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| CF01 | Termination of patent right due to non-payment of annual fee |