CN102312859A - Bell terminal fan blade and production method thereof - Google Patents
Bell terminal fan blade and production method thereof Download PDFInfo
- Publication number
- CN102312859A CN102312859A CN2011101893607A CN201110189360A CN102312859A CN 102312859 A CN102312859 A CN 102312859A CN 2011101893607 A CN2011101893607 A CN 2011101893607A CN 201110189360 A CN201110189360 A CN 201110189360A CN 102312859 A CN102312859 A CN 102312859A
- Authority
- CN
- China
- Prior art keywords
- fan blade
- trailing edge
- bell
- wing
- plate assembly
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/16—Making turbo blades or propellers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/49336—Blade making
Abstract
The present invention relates to bell terminal fan blade and production method thereof, and a kind of Blower Plate Assembly is provided.Said Blower Plate Assembly can comprise: fan blade; It has wing section and wing flap portion; Said wing section forms through lengthways running through mould, and said wing flap portion and said wing section are integrated and also lengthways run through said mould, and said fan blade has hub end and end; Tapered trailing edge; Its part that is positioned at fan blade trailing edge place and the said trailing edge through making said fan blade removes after running through said mould and is defined, and said tapered trailing edge is defined as said fan blade from said hub end and narrows down to said end; And bell portion, it interrupts said tapered trailing edge near said end, and said bell is defined as said fan blade from said bell section start and becomes wideer to said end.The method of making said fan blade also is provided.
Description
Technical field
The present invention relates generally to a kind of fan blade.More particularly, the present invention relates to the fan blade that realizes high efficiency geometrical shape that has of pultrusion or extrusion moulding.
Background technique
Generally believe that in axial fan design the key element relevant with high-efficient operation is to spread all on the whole length of fan blade the distributing gas rate of outflow as far as possible equably.This in fan blade design typically through realizing along the wing chord of length of blade and the variation of angle; The wideest wing chord and maximum angle are promptly arranged near the blade hub end that moves more slowly, and near the very fast blade end that moves, narrower wing chord and less angle are arranged.
The fan that is used in cooling tower and the air-cooled heat exchanger generally places in the guard shield to improve its efficient.Though the use of guard shield can improve the performance of fan really, still there are loss in aerodynamical resistance and the air circulation between blade end and guard shield top layer owing to along the guard shield top layer.Remedy the operational efficiency that these losses can further improve fan through the careful design of fan blade.Quick and the cheap manufacturing of this type of fan blade will become gratifying development.
Therefore, desired provide a kind of method and apparatus, it provides the relatively inexpensive fan blade that can realize high-efficient operation in certain embodiments.
Summary of the invention
The present invention has satisfied the demand to a great extent, wherein in a scheme, a kind of device is provided, and said device can provide the fan blade relatively efficiently of being produced by economization in certain embodiments.
According to one embodiment of the present of invention, a kind of Blower Plate Assembly is provided.This Blower Plate Assembly can comprise: fan blade; It has wing section and wing flap portion (flap portion); Wing section forms through lengthways running through mould, and wing flap portion and wing section are integrated and also lengthways run through mould, and this fan blade has hub end and end; Tapered trailing edge, it is positioned at fan blade trailing edge place and removes after running through mould through a part that makes the fan blade trailing edge and is defined, and tapered trailing edge is defined as fan blade from the hub end terminad and narrows down; And bell (flared portion), it interrupts tapered trailing edge near endways, and bell is defined as fan blade from bell section start to end and broadens.
According to an alternative embodiment of the invention, the production method of Blower Plate Assembly is provided.The method can comprise: metal is passed the mould extrusion moulding, metal is formed have wing the shape with the fan blade of wing flap portion; On the fan blade trailing edge, from the metal after the extruding, remove material, so that narrow down to the end of fan blade from the hub end of fan blade; And the trailing edge that makes fan blade interrupts tapered trailing edge near being configured as endways, and forms bell portion, and said bell is defined as fan blade from bell section start and broadens to end.
According to an alternative embodiment of the invention, the production method of Blower Plate Assembly is provided.The method can comprise: will pass mould with the glass fibre pultrusion of resin impregnated, and glass fibre formed have wing the shape with the fan blade of wing flap portion; Remove material the glass fibre on the fan blade trailing edge after pultrusion, so that narrow down to the end of fan blade from the hub end of fan blade; And the trailing edge that makes fan blade interrupts tapered trailing edge near being configured as endways, and forms bell portion, and said bell is defined as fan blade from bell section start and broadens to end.
Summarized rather than described some embodiment of the present invention widely, so that understand its detailed description better, and so that the better correct contribution of estimating the present invention to related domain.Certainly, below will describe other embodiments of the invention, and these embodiments will be formed on the theme of this claim of enclosing.
In this respect, before describing at least one embodiment of the present invention in detail, will be appreciated that the invention is not restricted to be applied to following description pointed or accompanying drawing in illustrated detailed construction and component configuration.The present invention also has other embodiment except that the embodiment of these descriptions, can implement by different way and realize.In addition, should be appreciated that, here and the summary in used technical term and proper noun be merely purpose of description and should be regarded as a kind of qualification.
Likewise, those of skill in the art can will be appreciated that, the disclosure based on notion can be used simply as design other is used to realize the structure of the several purposes of the present invention, the basis of method and system.Therefore, importantly, claim is regarded as and contains the equivalent structure that does not deviate from the spirit and scope of the present invention.
Description of drawings
Fig. 1 has shown the side view that uses the cooling tower of fan blade according to the preferred embodiment of the invention.
Fig. 2 is the sectional view according to fan blade of the present invention.
Fig. 3 is the side view according to the fan of the embodiment of the invention.
Fig. 4 is the plotted curve of performance of fan blade that has shown the fan of Fig. 3.
Fig. 5 is the side view according to another fan of the embodiment of the invention.
Fig. 6 is the plotted curve of performance of fan blade that has shown the fan of Fig. 5.
Fig. 7 is the side view according to another fan of the embodiment of the invention.
Fig. 8 is the plotted curve of performance of fan blade that has shown the fan of Fig. 7.
Fig. 9 is the side view according to another fan of the embodiment of the invention.
Figure 10 is the plotted curve of performance of fan blade that has shown the fan of Fig. 9.
Figure 11 is the plan view according to the fan blade of the fan shown in Fig. 9.
Figure 12 is the viewgraph of cross-section of the fan blade shown in Figure 11.
Figure 13 is the exploded view according to the fan blade of the embodiment of the invention.
Figure 14 is the side cross-sectional view according to the fan blade of the fan of Figure 13.
Figure 15 is the plan view according to the fan blade of the fan blade of Figure 13.
Figure 16 is the exploded view of fan blade and hub unit.
Figure 17 is the front view of fan blade and hub unit.
Embodiment
Can utilize the fan blade of the metal of for example aluminium being produced a kind of economy that is used for cooling tower and air-cooled heat exchanger, anticorrosion, light, hollow through the method for mould extrusion moulding.Similarly hollow material (profile) can utilize composite material production through passing mould with the glass fibre pultrusion of resin impregnated.The fan blade of producing with the method for extruding or pultrusion has constant wing chord and constant angles at first on its whole length.For improving the static pressure capacity of these fan blade, make these blades be formed with the trailing edge extension part or the wing flap of integration usually, the trailing edge extension part of this integration or wing flap can be flat or are bent upwards.
For the fan blade that does not have trailing edge flap, or the blade that after extruding, is not trimmed for trailing edge flap, it is constant that the wing chord of blade and angle possibly keep.The gas rate of outflow of constant wing chord, untwisted blade has very uneven distribution usually, and promptly near the airspeed fan hub is very low, and near the airspeed blade end but exceeds a lot.As common, because resistance and recirculation near guard shield, there is severe attrition in the fan of running in the guard shield.
The method that is used for the fan blade of imitated distortion with extruding or drawing and extruding section bar and taper is into the part that diagonal ground cuts trailing edge flap, is formed near the wing chord the wideest wheel hub and the narrowest wing chord at the blade end place.The size of tapering has significant effect for the distribution of the gas rate of outflow, thereby and influences the operating efficient of fan.Yet, as what seen, owing to, still seriously be reduced near terminal speed in the resistance at guard shield place and the loss of recirculation through constant blade wing chord.
For remedying a large amount of loss in blade end place, developed the new transformation on fan blade design.Through trailing edge flap is attenuated on the most of length of blade, but the width that increases wing chord endways is to form " bell end ".The design of bell end has remedied the loss of blade end place resistance and recirculation, and more even velocity distribution is provided, and therefore realizes higher running efficiency.To describe various embodiments of the invention with reference to accompanying drawing now, wherein represent similar parts with similar reference character in full.Term on the different spaces is like front portion, rear portion, top, bottom, aim to provide about the reference at visual angle in the accompanying drawing with other relational language and unrestricted upwards, backward.
According to one embodiment of the invention, the fan with a plurality of fan blade is provided, said fan blade has characteristics more described here.
Fig. 1 has shown the lateral parts sectional view of cooling tower 10.Cooling tower 10 comprises the fan 12 that is positioned at guard shield 14.Fan 12 is made up of the fan blade 26 that the blade handle that is connected to wheel hub 18 16 supports.Wheel hub 18 is connected to the vertical shaft 20 of the gear-box 21 that links to each other with live axle 22 machineries.Live axle 22 can be connected to motor 24 with turning round.Motor 24 rotating driveshafts 22, the vertical shaft 20 of these live axle 22 turning gear roller boxs 21, this vertical shaft 20 rotates wheel hub 18, these wheel hub 18 rotor blade handles 16, this blade handle 16 rotates fan blade 26.
Fig. 2 has shown the cross section according to the fan blade 26 of the embodiment of the invention.Fan blade 26 has wing section 28 and trailing edge extension part 30 of hollow.The geometrical shape of trailing edge extension part 30 (also being called as wing flap 30) is providing some advantages with the further feature of fan blade 26 aspect the efficient.
Fig. 3,5,7 and 9 has shown the fan 12 of four fan blade 26 with different geometries.Other embodiment can adopt more or less blade 26.Fig. 4,6,8 and 10 has shown the plotted curve of the performance of the fan blade 26 that shows in the last accompanying drawing that is illustrated in the next-door neighbour.Those skilled in the art can select to have the fan blade 26 for the geometrical shape of the desired performance of specific installation.Observe after the disclosure, those of ordinary skill in the art can revise and add data presented in (interpolate) chart, to draw the geometrical shape with the desired performance that expectation is provided.
Fig. 3,5,7 and 9 has shown the fan 12 with the fan blade 26 that is connected to wheel hub 18.Fan blade 26 comprises upper epidermis 36 and following top layer 38 and trailing edge section bar 40.As at the trailing edge section bar of Fig. 3-10 40 with shown in the corresponding performance chart, different trailing edge section bars 40 can change performance significantly.
Fig. 9 has shown the fan blade 26 with terminal extension part 46, and this end extension part 46 has interrupted narrowing down by the fan blade that the inclined-plane limited 26 of trailing edge section bar 40.The width that terminal extension part 46 causes fan blade 26 is along with the trailing edge section bar extends and broadens to the end of fan blade 26.
Figure 11 has shown according to the described fan blade 26 of embodiments of the invention.Fan blade 26 has the hub end 42 that is connected to wheel hub 18 adjacent hub 18 when (not showing among Figure 11) when fan blade 26.Fan blade 26 has the end 44 on the end opposite of hub end 42.Terminal extension part 46 can be connected to the end 44 of fan blade 26.
The end of fan blade 26 can be equipped with end cap 47.End cap 47 can be processed with injection-moulded plastic or other material that is fit to arbitrarily.End cap 47 can be connected to fan blade 26 with rivet 48.The connecting means or the fastening piece that also can use other to be fit to.End cap 47 can form has the terminal desired geometrical shape that is used for fan blade 26, and this geometrical shape is difficult to realize through extruding or pultrusion to fan blade 26.
The rotating center of the fan 12 that point 56 expressions are associated with fan blade 26.Figure 11 has shown that expression is represented as exemplary lengths and each dimension line of position of each feature of the function of R (like the radius of the fan that is assembled measured from rotating center shown in Figure 11 56) and C (wing chord of fan blade shown in figure 12 or width).
Figure 12 has shown the cross section of with hollow wing section 28 and the fan blade 26 of trailing edge extension part or wing flap 30.Shown dimension line representes to be represented as the exemplary lengths and the position of each feature of the function of C (wing chord or the width of fan blade 26 shown in figure 12).
Figure 13 has shown the exploded view according to the fan blade 26 of the embodiment of the invention.Figure 13 has shown how fan blade 26 is connected to blade handle 16 through the screw 58 with screw thread 59.Use screw 58, packing ring 60 to be connected fan blade 26 with nut 62.Screw 58 extends through hole 54.Blade handle 16 passes hub cap 50 and extends in wing section 28 of hollow.Rivet 52 is connected to fan blade 26 with hub cap 50.End cap 47 is connected to fan blade 26 through rivet 48.The terminus inner that equilibrium block 64 is connected to blade 26 with screw 58, packing ring 60 and nut 62 is with balanced component.
Figure 14 has shown along the cross section of the fan blade 26 of the line 14-14 intercepting among Figure 15.Shown that the fan blade 26 shown in Figure 14 is connected to blade handle 16.
Figure 15 has shown fan blade 26 assemblies of the Figure 13 that is in assembling form.Figure 15 is partly dissectd to be presented at the part of the connection 61 between equilibrium block 64 and the fan blade 26.
Figure 16 is the part exploded view of fan blade 26 and wheel hub 18.Through engage the blade handle 16 and wheel hub 18 of fan blade 26 with U-shaped screw 66, fan blade 26 is connected to wheel hub 18.U-shaped screw 66 is connected to wheel hub 18 through packing ring 60 and nut 62.Blade handle 16 is placed in the cradle 68.U-shaped screw 66 extends through the hole 70 on the wheel hub 18.
Figure 17 has shown the fan blade 26 that is connected to wheel hub 18 with said method.
According to some embodiments of the present invention, can make fan blade 26 through passing the mould extrusion moulding such as the metal of aluminium.Alternatively, can be with passing mould such as the material pultrusion of glass fibre and resin to make fan blade.In case fan blade is extruded or pultrusion, can be through cutting or cutting fan blade with further refinement given shape.For example, on fan blade, cut out the trailing edge section bar through the milling fan blade.Also can use other cutting or cutting technique.Further feature spare such as hole etc. can be cut or stamped on the fan blade.Can be connected to fan blade such as other parts such as hub cap, blade handle and end cap.
Should be appreciated that, be provided for assembling with the specific hardware that is connected each parts and method only as an example, and the invention is not restricted to above-mentioned specific instance.
Through detailed explanation a lot of feature and advantage of the present invention are become obviously, and therefore, the claim of enclosing is intended to cover all and fall into the feature and advantage within connotation of the present invention and the scope.In addition; Because those skilled in the art will easily find out a lot of transformations and variation; Therefore do not hope to limit the invention to the accurate structure and the operation that illustrate and describe, therefore, improvement that all are suitable and equivalent constructions all will fall into protection scope of the present invention.
Claims (20)
1. Blower Plate Assembly comprises:
Fan blade, its have wing section with wing flap portion, said wing section forms through lengthways running through mould, said wing flap portion is with said wing section integration and also lengthways run through said mould, said fan blade has hub end and end;
Tapered trailing edge; Its part that is positioned at the trailing edge place of fan blade and the said trailing edge through making said fan blade removes after running through said mould and is defined, and said tapered trailing edge is defined as said fan blade from said hub end and narrows down to said end; And
Bell portion, it interrupts said tapered trailing edge near said end, and said bell is defined as said fan blade from said bell section start and becomes wideer to said end.
2. Blower Plate Assembly according to claim 1 is wherein seen from said fan blade side, and said wing flap portion is inclined upwardly.
3. Blower Plate Assembly according to claim 1 also is included in the plastic insertion piece that said tail end is connected to said fan blade.
4. Blower Plate Assembly according to claim 3, wherein said plastic insertion piece is injection moulded into type.
5. Blower Plate Assembly according to claim 3 also comprises the rivet that said plastic insertion piece is connected to said fan blade.
6. Blower Plate Assembly according to claim 1 also comprises the hub cap of the said hub end that is positioned at said fan blade.
7. Blower Plate Assembly according to claim 1 also comprises the connection handle that is positioned at wing inside and is configured to said fan blade is connected to wheel hub.
8. Blower Plate Assembly according to claim 1 also comprises the guard shield that holds said fan blade and wheel hub.
9. Blower Plate Assembly according to claim 1 also comprises the cooling tower with the said fan blade that is connected to wheel hub, and said fan blade is modelled as the air-flow that provides through said cooling tower.
10. the production method of a Blower Plate Assembly comprises:
Metal is passed the mould extrusion moulding, said metal is formed have wing the shape with the fan blade of wing flap portion;
On the trailing edge of said fan blade, from the said metal after the extruding, remove material, so that narrow down to the end of said fan blade from the hub end of said fan blade; And
The said trailing edge of said fan blade is configured as near said end interrupts tapered trailing edge, and form bell portion, said bell is defined as said fan blade from said bell section start and broadens to said end.
11. method according to claim 10, wherein said metal are aluminium.
12. method according to claim 10 also is included in the vinyl cover that connects molding and forming on the said end of said blade.
13. forming on the direction up said wing flap portion, method according to claim 10, wherein said mould extend.
14. method according to claim 10 also is included in said fan blade is installed in the cooling tower.
15. method according to claim 10 also comprises the fan that operation is made up of said fan blade.
16. a method of making said Blower Plate Assembly comprises:
To pass said mould with the glass fibre pultrusion of resin impregnated, said glass fibre formed have wing the shape with the fan blade of wing flap portion;
Remove material the said glass fibre on the trailing edge of said fan blade after pultrusion, so that narrow down to the end of said fan blade from the hub end of said fan blade; And
The said trailing edge of said fan blade is configured as near said end interrupts tapered trailing edge, and form bell portion, said bell is defined as said fan blade from said bell section start and broadens to said end.
17. method according to claim 16 also is included in the vinyl cover that connects molding and forming on the said end of said blade.
18. forming on the direction up said wing flap portion, method according to claim 16, wherein said mould extend.
19. method according to claim 16 also is included in said fan blade is installed in the cooling tower.
20. method according to claim 16 also comprises the fan that operation is made up of said fan blade.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/828,823 | 2010-07-01 | ||
| US12/828,823 US20120003098A1 (en) | 2010-07-01 | 2010-07-01 | Flared tip fan blade and method of manufacturing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102312859A true CN102312859A (en) | 2012-01-11 |
Family
ID=44650975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101893607A Pending CN102312859A (en) | 2010-07-01 | 2011-07-01 | Bell terminal fan blade and production method thereof |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20120003098A1 (en) |
| EP (1) | EP2402617A2 (en) |
| CN (1) | CN102312859A (en) |
Cited By (1)
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|---|---|---|---|---|
| CN106794641A (en) * | 2014-08-27 | 2017-05-31 | 赛峰飞机发动机公司 | For gas-turbine engine, the guide vane that is made up of composite and its manufacture method |
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| US10125783B2 (en) | 2013-02-25 | 2018-11-13 | Greenheck Fan Corporation | Fan assembly and fan wheel assemblies |
| CA2902316C (en) | 2013-02-25 | 2018-10-09 | Greenheck Fan Corporation | Mixed flow fan assembly |
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| US20190024631A1 (en) * | 2017-07-20 | 2019-01-24 | General Electric Company | Airflow configuration for a wind turbine rotor blade |
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| USD905227S1 (en) | 2018-07-10 | 2020-12-15 | Hunter Fan Company | Ceiling fan blade |
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| WO2022245828A1 (en) * | 2021-05-20 | 2022-11-24 | Vmg Ventilation Services Llc | Fans and fan blades having adjustable flaps |
| CN114251301A (en) * | 2022-01-20 | 2022-03-29 | 郭晶智 | Super large ceiling fan blade adopting plastic extrusion molding process |
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| US4422983A (en) * | 1982-06-16 | 1983-12-27 | Ceramic Cooling Tower Company | Fiberglass reinforced cooling tower |
| US4618313A (en) * | 1980-02-06 | 1986-10-21 | Cofimco S.R.L. | Axial propeller with increased effective displacement of air whose blades are not twisted |
| US5226783A (en) * | 1990-07-30 | 1993-07-13 | Usui Kokusai Sangyo Kaisha Ltd. | Axial flow fan with centrifugal elements |
| US5246343A (en) * | 1991-12-23 | 1993-09-21 | Emerson Electric Co. | Fan assemblies and method of making same |
| US20080008596A1 (en) * | 2004-07-21 | 2008-01-10 | Aynsley Richard M | Fan Blades |
| US20080031726A1 (en) * | 2006-04-11 | 2008-02-07 | Howden Netherlands B.V. | Axial fan |
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2010
- 2010-07-01 US US12/828,823 patent/US20120003098A1/en not_active Abandoned
-
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- 2011-06-27 EP EP11171437A patent/EP2402617A2/en not_active Withdrawn
- 2011-07-01 CN CN2011101893607A patent/CN102312859A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4618313A (en) * | 1980-02-06 | 1986-10-21 | Cofimco S.R.L. | Axial propeller with increased effective displacement of air whose blades are not twisted |
| US4422983A (en) * | 1982-06-16 | 1983-12-27 | Ceramic Cooling Tower Company | Fiberglass reinforced cooling tower |
| US5226783A (en) * | 1990-07-30 | 1993-07-13 | Usui Kokusai Sangyo Kaisha Ltd. | Axial flow fan with centrifugal elements |
| US5246343A (en) * | 1991-12-23 | 1993-09-21 | Emerson Electric Co. | Fan assemblies and method of making same |
| US20080008596A1 (en) * | 2004-07-21 | 2008-01-10 | Aynsley Richard M | Fan Blades |
| US20080031726A1 (en) * | 2006-04-11 | 2008-02-07 | Howden Netherlands B.V. | Axial fan |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106794641A (en) * | 2014-08-27 | 2017-05-31 | 赛峰飞机发动机公司 | For gas-turbine engine, the guide vane that is made up of composite and its manufacture method |
Also Published As
| Publication number | Publication date |
|---|---|
| US20120003098A1 (en) | 2012-01-05 |
| EP2402617A2 (en) | 2012-01-04 |
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