CN1748933A - Method for producing high efficiency energy saving fan vane using fin structure section bar - Google Patents
Method for producing high efficiency energy saving fan vane using fin structure section bar Download PDFInfo
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- CN1748933A CN1748933A CN 200410035740 CN200410035740A CN1748933A CN 1748933 A CN1748933 A CN 1748933A CN 200410035740 CN200410035740 CN 200410035740 CN 200410035740 A CN200410035740 A CN 200410035740A CN 1748933 A CN1748933 A CN 1748933A
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Abstract
The present invention relates to fan vane wheel making technology. The process of making efficient energy saving fan vane wheel with fin structure section bar includes twisting vane section bar, machining the contact curved surface between the vane root and the hub, setting vane wheel connecting part, vane surface modification, connecting the vane root and the hub and vane wheel surface protecting treatment. The said process can produce low noise energy saving vane wheel, and can meet the personalized design requirement and realize mass production of vane in high production efficiency and high product quality. The present invention may be used widely in manufacture of different kinds of fan.
Description
Technical field
The present invention relates to a kind of processing method of draught fan impeller, more precisely utilize the airfoil structure section bar to make the method for energy-efficient draught fan impeller.
Background technology
The performance of draught fan impeller depends on the shape of fan impeller blade to a great extent, and in the prior art, the common processing method of aerofoil profile fan blade is mold pressing, casting, the method of copying milling, manual correction of the flank shape shapes, impeller is heavy, energy consumption is high, the large-scale production difficulty is big, and quality is difficult for guaranteeing.Also there is not at present a kind of processing method that has clear and definite machining benchmark, can really adapt to large-scale production aerofoil profile fan blade in enormous quantities.Publication number is to disclose a kind of axial-flow fan blade machining process in the patent documentation of CN 1406708A, it is to squeeze out airfoil type uiform section aluminium alloy extrusions on extruder, with clamp clamps blade two ends or blade is divided into plurality of sections clamps every section two ends and give blade blank one torsional moment, make blade produce torsional deflection then.The method has the following disadvantages: (1) is subjected to the influence of blower fan service condition, the form of blade is also just varied, so add the section bar that man-hour will corresponding multiple section form, and whole process does not have clear and definite machining benchmark in this invention, not only be difficult to form the production of in enormous quantities, standardization, seriation, and can have a strong impact on the performance of blower fan, and make properties of product and design result, model machine performance that bigger difference be arranged, be difficult to reach designing requirement; (2) there is deficiency on the torsional angle processing method, one of disclosed method in the file: " with clamp clamps blade two ends; allow and rotate relatively between two anchor clamps; give blade blank one torsional moment ", the blade that the method processes, from the blade root to the leaf, push up the torsional angle uniformity at each position, can not reach the aerodynamic force designing requirement that each position torsional angle value of fan blade changes; Two of method: " blade being divided into plurality of sections; the two ends of clamping every section allow two anchor clamps rotate relatively; give blade blank one torsional moment; make blade produce torsional deformation ", though the method can make the blade root of blade push up each position to leaf and produce different torsional angles, but the torsional angle value is difficult to form continuously, changes uniformly, can influence the performance of blower fan equally.
Fan performance is to the very high required precision that is combined with of contact surface between the established angle of blade and blade and the wheel hub, and for the fan blade that has certain torsional angle, the processing of this curved surface is just very difficult, generally also just adopt the method processing of manual burr at present, but this method production efficiency and precision are all very low, be difficult to guarantee the precision that is connected of blade and wheel hub.
Summary of the invention
Technical assignment of the present invention is at above-mentioned deficiency of the prior art, a kind of method of utilizing the airfoil structure section bar to make energy-efficient draught fan impeller is provided, continually varying torsional angle value and blade and wheel hub are high-precision to be located by connecting the draught fan impeller that this method is produced because of its blade has, can well the aerodynamic requirement, make the blower fan of batch process have the high-performance consistent with model machine.
Technical assignment of the present invention is realized in the following manner: utilize the airfoil structure section bar to make the method for energy-efficient draught fan impeller, it is employing standard aerofoil profile fan blade section bar, the processing of the torsional angle by vane section bar, root of blade and wheel hub contact surface, the setting of impeller connector and blade surface modification, blade connect processing and manufacturing low noise energy-saving fan impeller with wheel hub;
Its procedure of processing is as follows:
1) procedure of processing of aerofoil profile fan impeller blade section bar is:
A), make aluminium alloy, plastics airfoil fan section bar by extruding, the method extruded then according to the cross section structure of the performance requirement designing airfoil blade of different purposes blower fans;
B) according to fan blade dimensional requirement cutting cutting of material;
2) torsional angle of blade design processing:
A) by to the linearization process of twist angle of blade curve, find out the break in curve middle part, add spacing some A of radial location in man-hour, calculate the torsional angle difference Δ β of point from the blade root to A respectively as twist angle of blade
1Torsional angle difference Δ β with top from the A point to leaf
2, the torsional angle of whole blade is Δ β=Δ β
1+ Δ β
2
B) with the central shaft hole on the vane section bar section as torsional axis, point cross section, A place is spacing cross section, the vane section bar two ends are that reinforcing is reversed the cross section and made vane section bar produce the torsional angle distortion, and wherein, the torsional angle difference that spacing cross section and two reinforcings are reversed between the cross section is respectively Δ β
1, Δ β
2
3) processing of root of blade and wheel hub contact surface
Set a processing plane, and set and a bit be the virtual center of wheel hub on this plane, determine the spacing of bands for band and this virtual center with the radius of wheel hub; Promoting blade is pivot with the virtual center, is parallel to the direction rotation of processing plane, when blade pass is crossed bands for band, can process the contact surface that matches with wheel hub at root of blade;
4) setting of impeller connector
With the double-screw bolt is the connector of blade and wheel hub, the one end is fixed in the locating hole of blade, and the other end is used for blade and wheel hub are fixed as one;
5) blade surface is modified
Vane tip is carried out plug-hole to be handled;
6) blade connects with wheel hub
With double-screw bolt according to the established angle of calculate determining, with vanes fixed on wheel hub.
7) impeller being carried out anti-corrosion protection handles;
When the vane section bar intensity and toughness can not satisfy the twist angle of blade requirement, in the blade production process, also tackle blade and strengthen processing.
Blade is strengthened when handling and can be packed into filler at the blade hollow parts.
When adopting aluminium alloy extrusions to make the aerofoil profile fan blade, section bar hardness is controlled between the Vickers 70-90 degree.
The processing of root of blade and wheel hub contact surface can also be adopted following scheme: set a processing plane, and set and a bit be the virtual center of wheel hub on this plane, determine the spacing of root of blade and this virtual center with the radius of wheel hub; Making cutting saw blade is pivot with the virtual center, and parallel processing plane direction is made circular motion by root of blade, can process the contact surface that matches with wheel hub at root of blade.
Can select 1-3 hole on the root of blade end face as locating hole when the impeller connector is set, these holes both can be the central shaft holes of blade, also can be the quality adjustment holes.
A kind of what blade is carried out the top plug-hole can be in order in the method down when handling: as 1. to weld sealing of hole; 2. clog plug-hole.
Impeller is being carried out anti-corrosion protection when handling, can adopt a kind of in the following technology: oxidation, spray paint, plastic-blasting.
Can also blade and wheel hub be fixed as one by the method for welding.
In the man-hour that adds of carrying out vane section bar, the design of vane section bar cross section structure will be followed following specification requirement:
1, the requirement of using according to blower fan, the selected standard aviation aerodynamic force aerofoil profile that adapts.Must height when selecting aerofoil profile, must consider the syndeton intensity and the connected mode of blade except the lift-drag ratio coefficient.
2, the cross section structure central axis of vane section bar and processes axis unification, the position of centre of gravity one in cross section fixes on central axis the place ahead, when fan condition changed, the Center of Pressure excursion should drop on the anterior position of center of gravity simultaneously, guaranteed the stability of controlling of fan blade.Central axis is the axial line of central shaft hole.
3, the cross section structure of vane section bar under the prerequisite that satisfies rigidity, intensity, design some square or circular quality adjustment holes as much as possible, and weight reduction, raising hollow rate guarantee that structure is the lightest.When adopting extrusion forming process, guarantee that the shrinkage factor of cross section each several part is coordinated mutually.
The processing method of band central shaft hole airfoil fan of the present invention has following outstanding beneficial effect:
(1) in the process of whole draught fan impeller, the central shaft hole of vane section bar makes draught fan impeller realize accurately processing in enormous quantities all the time as clear and definite machining benchmark;
(2) in the torsional angle processing of blade, with cross section, spacing some A place is spacing cross section, the vane section bar two ends are that torsional angle processing is carried out to blade in afterburning cross section, both can satisfy the requirement that fan blade constantly changes from root to leaf top torsional angle, can satisfy the torsional angle value again and want the continually varying requirement;
(3) hardness of aluminum alloy materials vane section bar is controlled between the Vickers 70-90 degree, make existing certain elasticity of section bar and rigidity, can produce certain plastic deformation again, utilize the plastic deformation torsional angle of section bar, it is continuous utilizing the elasticity of section bar to make the variation of the torsional angle of blade again, seamlessly transit, and in the blower fan running, can not change again;
(4) processing method of root of blade has overcome many deficiencies of manual burr mode, has improved working (machining) efficiency and precision greatly.
Description of drawings
Accompanying drawing 1-7 is for realizing several typical sectional structure schematic diagram of vane section bar of the present invention;
Accompanying drawing 8 is two bolt structure schematic diagrames that blade is connected with wheel hub;
Accompanying drawing 9 is the three bolt structure schematic diagrames that blade is connected with wheel hub;
Accompanying drawing 10 is that the main stud shaft that is connected with wheel hub of blade is stressed, little positioning stud fixed pitch structural representation;
Accompanying drawing 11 is the double-screw bolt mosaic block structural representation that blade is connected with wheel hub;
Accompanying drawing 12 is the longitudinal girder syndeton schematic diagram that blade is connected with wheel hub;
Accompanying drawing 13 is a blade wheel structure schematic diagram of the present invention;
Accompanying drawing 14 is the structural representation of a kind of embodiment of the torsional angle equipment that is used for realizing method torsional angle of the present invention processing part;
Accompanying drawing 15 is the left TV structure schematic diagram of torsional angle equipment among Figure 14;
Accompanying drawing 16 is the plan structure schematic diagram of torsional angle equipment among Figure 14;
Accompanying drawing 17 is that the A-A of torsional angle equipment among Figure 14 is to the sectional structure schematic diagram;
Accompanying drawing 18 is for being used for the structural representation of a kind of embodiment of cutting equipment of vane section bar root cutting processing in the method for utilizing the airfoil structure section bar to make energy-efficient draught fan impeller of the present invention;
Accompanying drawing 19 is the local structure for amplifying schematic diagram at cutting equipment A place among Figure 18;
Accompanying drawing 20 is that the B-B of cutting equipment among Figure 18 is to the sectional structure schematic diagram;
Accompanying drawing 21 is that the C-C of cutting equipment among Figure 18 is to the sectional structure schematic diagram.
Among the figure:
1-1. central shaft hole; 1-2. quality adjustment hole;
2-1. pedestal; 2-2. fixed frame; 2-3. sliding guide; 2-4. torsional angle rotating disk; 2-5. anchor clamps rotating disk; 2-6. pull force application handle; 2-7. adjusting bolt; 2-8. circumference calibration loop; 2-9. centralized positioning pin; 2-10. sliding frame; 2-11. chute; 2-12. clamping plate;
3-1. slide block; 3-2. positioning mandril; 3-3. the moving ceding of Taiwan; 3-4. blade to be processed; 3-5. support; 3-6. bands for band; 3-7. positioning rotating shaft; 3-8. dovetail groove; 3-9. workbench; 3-10. band saw groove; 3-11. sawing machine; 3-12. angular adjustment dish: 3-13. jackscrew; 3-14. nib clamping plate;
4-1. blade; 4-2. double-screw bolt; 4-3. nut; 4-4. wheel hub.
The specific embodiment
Explain below with reference to Figure of description and specific embodiment the method for utilizing the airfoil structure section bar to make energy-efficient draught fan impeller of the present invention being done, but do not limit the present invention in any way.
Embodiment 1: vane section bar
Vane section bar used in the present invention has been announced the (patent No.: 200420052872.4 in the patent document that the applicant submits to; Denomination of invention: the hollow aerofoil profile fan blade section bar of band central shaft hole).
The typical Cross section Design structure of its section bar can be divided into following a few class:
One, the moulding blade profile structure that need not to fill when torsional angle is as accompanying drawing 1,2,5,6;
Two, the moulding blade profile structure that must fill when torsional angle is as accompanying drawing 3,4;
Three, can repair the blade profile structure of type, as accompanying drawing 5,6;
Four, combined type connected structure aerofoil section structure is as accompanying drawing 7.
Embodiment 2: need not the manufacturing (the blade section structure is seen shown in the accompanying drawing 1,2,5,6) of the draught fan impeller of filling during twist angle of blade
Step:
(1) according to the structure of the designing requirement designing airfoil blade of the requirement of different purposes fan performance indexs and above-mentioned blade, make aluminium alloy airfoil fan section bar by the method for extruding then, section bar hardness is controlled between the 70-90 degree;
According to fan blade dimensional requirement cutting cutting of material;
(2) utilize torsional angle equipment that section bar is carried out torsional angle processing.
(3) utilize cutting equipment that the section bar root is carried out cutting processing;
(4) setting of impeller connector
Selecting the double-screw bolt of suitable types is the impeller connector, and an end of double-screw bolt is fixed in the locating hole of root of blade;
(5) blade surface is modified
Using welding sealing of hole or filling plug-hole that vane tip is carried out plug-hole handles;
(6) blade connects with wheel hub
With the double-screw bolt and the corresponding nut that are fixed on the blade, according to the established angle that calculates, with vanes fixed on wheel hub.
(7) impeller that assembles is carried out oxidation, sprays paint or anti-corrosion protection such as plastic-blasting is handled.
Embodiment 3: the manufacturing of the draught fan impeller that must fill during twist angle of blade (the blade section structure is shown in accompanying drawing 3,4)
Step:
(1) according to the structure of the designing requirement designing airfoil blade of the performance requirement of different purposes blower fans and above-mentioned blade, make aluminium alloy airfoil fan section bar by the method for extruding then, section bar hardness is controlled between the 70-90 degree;
According to fan blade dimensional requirement cutting cutting of material;
(2) utilize fine sand or other material to fill the section bar square hole;
(3) utilize torsional angle equipment that section bar is carried out torsional angle processing;
(4) remove the powdery packing material;
(5) utilize cutting equipment that root of blade is carried out cutting processing;
(6) setting of impeller connector
Selecting the double-screw bolt of suitable types according to the suffered blast of blade is the impeller connector, and an end of double-screw bolt is fixed in the locating hole of root of blade;
(7) blade surface is modified
Vane tip is welded sealing of hole or filling plug-hole;
(8) blade connects with wheel hub
Established angle according to calculating is connected blade on the wheel hub.
(9) impeller that assembles is carried out oxidation, sprays paint or the protection of surface anticorrosion such as plastic-blasting is handled.
Embodiment 4: torsional angle process equipment and use
Shown in accompanying drawing 14-17, realize the twist angle of blade equipment of processing method of the present invention, its structure comprises pedestal 2-1, fixed frame 2-2 and sliding frame 2-10, fixed frame 2-2 is arranged on the two ends of pedestal 2-1, four sliding guide 2-3 are fixed between two fixed frame 2-2, two sliding frame 2-10 are arranged on two sliding guide 2-3 between the fixed frame 2-2, and can horizontally slip along sliding guide 2-3, one of them fixed frame 2-2 and two sliding frame 2-10 are provided with blade and clamp the torsional angle device.
Blade clamps the torsional angle device by anchor clamps rotating disk 2-5, torsional angle rotating disk 2-4, circumference calibration loop 2-8, chute 2-11, clamping plate 2-12, regulate bolt 2-7 and pull force application handle 2-6 and constitute, anchor clamps rotating disk 2-5 and torsional angle rotating disk 2-4 be back-to-back to be embedded in the circular hole of frame central authorities, the circumference calibration loop 2-8 that the top is provided with centralized positioning pin 2-9 is arranged on the rotating disk outside and is fixed on the two sides of frame, the axle center of the axle center of rotating disk and circumference calibration loop 2-8 is all consistent with the axle center of frame central circular hole, the outside of anchor clamps rotating disk 2-5 is fixed with chute 2-11, clamping plate 2-12 is arranged in the chute 2-11, the upper end of clamping plate 2-12 is provided with regulates bolt 2-7, clamping plate 2-12 can do the closed slip of unlatching by regulating bolt 2-7 in chute 2-11, clamping plate central authorities were the aerofoil profile hole identical with the vane section bar profile when clamping plate 2-12 was closed, and the outer upper end of torsional angle rotating disk 2-4 is fixed with pulls force application handle 2-6.
In order to determine the relative distance between frame easily, promptly spacing cross section and the distance of reversing the cross section can be provided with the length scale on pedestal 2-1.
Carrying out the torsional angle first being processed, carry out axiality to three grip devices detects, coaxiality error is not more than 0.05 millimeter, and as the centre of gyration, the axis with the central shaft hole of section bar serves as that axle reverses when carrying out the torsional angle operation simultaneously with the central shaft hole of section bar for three grip devices; By analysis to the twist angle of blade curve, find out the break in curve middle part, add spacing some A of radial location in man-hour as twist angle of blade, calculate the torsional angle difference Δ β of point from the blade root to A respectively
1Torsional angle difference Δ β with top from the A point to leaf
2, the torsional angle of whole blade is Δ β=Δ β
1+ Δ β
2The section bar blade is clamped among three torsional angle rotating disk 2-4, and middle torsional angle rotating disk 2-4 maintains static at circumferencial direction, and two torsional angle rotating disk 2-4 at two ends are respectively according to Δ β
1With Δ β
2Reverse, make blade produce torsional angle.
Noted earlier is the most basic artificial afterburning operating equipment of afterburning torsional angle moulding, in addition can also be embodied as hydraulic pressure, the automatic or semi-automatic process equipment of electronic or intelligent afterburning operation.
Embodiment 5: process equipment and processing method that root of blade and wheel hub connection place are passed through curved surface mutually
Realize the blade cuts equipment of processing method of the present invention, shown in accompanying drawing 18-21, the workbench 3-9 of sawing machine 3-11 is provided with moving ceding of Taiwan 3-3, the end of moving ceding of Taiwan 3-3 is provided with positioning rotating shaft 3-7, positioning rotating shaft 3-7 will move ceding of Taiwan 3-3 and workbench 3-9 links together, and ceding of Taiwan 3-3 is rotated around positioning rotating shaft 3-7, the other end of moving ceding of Taiwan 3-3 is provided with the blade locator; Moving ceding of Taiwan 3-3 middle part is provided with angle locater near the position of the bands for band 3-6 of sawing machine 3-11, and bands for band 3-6 is fixed in the lower end among the band saw groove 3-10 of moving ceding of Taiwan 3-3.The slide block 3-1 of positioning rotating shaft 3-7 and blade locator can slide in the dovetail groove 3-8 of moving ceding of Taiwan 3-3 respectively.
Adjust the position of positioning rotating shaft 3-7 on moving ceding of Taiwan 3-3, make locating shaft 3-7 equal the radius of the wheel hub of blade 3-4 correspondence to be processed to the distance between the bands for band 3-6 of sawing machine 3-11, blade 3-4 to be processed is fixed with formwork splint 3-14, be installed on the angular adjustment dish 3-12, anglec of rotation adjustment disk 3-12 makes the angle of inclination of the processed end of blade 3-4 to be processed equal the established angle of blade on wheel hub, angular adjustment dish 3-12 is fixed making it and can not rotate with the jackscrew 3-13 on support 3-5 top; Adjust position, the left and right sides and the height of positioning mandril 3-2 on slide block 3-1 of the slide block 3-1 of blade locator, make positioning mandril 3-2 can hold out against the tail end of blade 3-4 to be processed, make the axis of the central shaft hole of blade 3-4 to be processed be in level and crossing with the axle center of locating shaft 3-7, start sawing machine 3-11, moving ceding of Taiwan 3-3 tail end is pulled in bands for band 3-6 work, and making the ceding of Taiwan is that rotate at the center with positioning rotating shaft 3-7, bands for band 3-6 cut from blade 3-4 to be processed, obtained required curved surface.
If the wheel hub of blade 3-4 to be processed is taper, can regulate workbench 3-9, make workbench 3-9 inclination certain angle, the size at angle of inclination equals half of cone hub drift angle, so just can process to have met the contact surface of cone hub.
Above-mentioned processing of passing through face mutually is fixed band saw blade 3-6, is virtual center and pivot rotating vane 3-4 with the position of locating shaft 3-7, thereby forms the processing that bands for band 3-6 and relatively moving of blade 3-4 realize passing through mutually face.In addition, can also the fixed blade position, realize passing through mutually the processing of face with the rotation of cutting saw blade, can play equal effect.
Embodiment 6: blade is connected with wheel hub
As shown in Figure 13, central shaft hole with blade serves as to connect the axle center, and the quality adjustment hole of close blade inlet edge is the double-screw bolt fixing hole, during connection, the end of double-screw bolt 4-2 is fixed in the central shaft hole and quality adjustment hole of blade 4-1, and the other end is fixed on the wheel hub 4-4 by nut 4-3.
Blade can also be fixed on the wheel hub by the form of welding, but in welding process, the design of positioning fixture will be with the axial line of the central shaft hole of blade as design basis.
Claims (9)
1, utilize the airfoil structure section bar to make the method for energy-efficient draught fan impeller, it is characterized in that adopting standard aerofoil profile fan blade section bar, the processing of the torsional angle by vane section bar, root of blade and wheel hub contact surface, the setting of impeller connector, blade surface modification, blade and wheel hub connect and impeller surface is carried out the anti-corrosion protection processing and is made low noise energy-saving fan impeller;
Its procedure of processing is as follows:
1) procedure of processing of aerofoil profile fan impeller blade section bar is:
A), make aluminium alloy, plastics airfoil fan section bar by the method for pushing, extruding then according to the dynamic (dynamical) section bar cross section structure that requires the designing airfoil blade of different purposes blower air;
B) according to fan blade dimensional requirement cutting cutting of material;
2) design of twist angle of blade processing:
A) by to the linearization process of twist angle of blade curve, find out the break in curve middle part, add spacing some A of radial location in man-hour, calculate the torsional angle difference Δ β of point from the blade root to A respectively as twist angle of blade
1Torsional angle difference Δ β with top from the A point to leaf
2, the torsional angle of whole blade is Δ β=Δ β
1+ Δ β
2
B) with the central shaft hole on the vane section bar section as turning axis, point cross section, A place is spacing cross section, and the vane section bar two ends are that the cross section is reversed in reinforcing, makes vane section bar produce the torsional angle distortion, wherein, the torsional angle difference reversed between the cross section of spacing cross section and two reinforcings is respectively Δ β
1, Δ β
2
3) processing of root of blade and wheel hub contact surface
Set a processing plane, and set and a bit be the virtual center of wheel hub on this plane, determine the spacing of bands for band and this virtual center with the radius of wheel hub; Promoting blade is pivot with the virtual center, is parallel to the direction rotation of processing plane, when blade pass is crossed bands for band, can process the contact surface that matches with wheel hub at root of blade;
4) setting of impeller connector
With the double-screw bolt is the connector of blade and wheel hub, the one end is fixed in the locating hole of root of blade; The other end is used for blade and wheel hub are connected as one;
5) blade surface is modified
A) carrying out plug-hole at vane tip handles;
6) blade connects with wheel hub
According to the blade angle that calculates, with double-screw bolt with vanes fixed on wheel hub.
7) impeller surface being carried out anti-corrosion protection handles;
2, processing method according to claim 1 is characterized in that when blade strength is not enough, comprises that also the enhancing of blade is handled.
3, processing method according to claim 3 is characterized in that blade being strengthened when handling and can being packed into filler at the blade hollow parts.
4, the method for manufacturing impeller blade according to claim 1, it is characterized in that when adopting aluminium alloy extrusions to make the aerofoil profile fan blade, section bar hardness is controlled between the Vickers 70-90 degree, both can the torsional angle moulding to guarantee section bar, be unlikely to arbitrary deformation in use again.
5, the method for manufacturing impeller blade according to claim 1, it is characterized in that to adopt following scheme: set a processing plane in the processing of root of blade and wheel hub contact surface, and set and a bit be the virtual center of wheel hub on this plane, determine the spacing of root of blade and this virtual center with the radius of wheel hub; Making cutting saw blade is pivot with the virtual center, and the direction that is parallel to processing plane moves in a circle, and can process the contact surface that matches with wheel hub at root of blade.
6, the method for manufacturing impeller blade according to claim 1 is characterized in that should selecting when the impeller connector is set 1-3 hole on the root of blade end face as locating hole.
7, processing method according to claim 1 is characterized in that also can clogging plug-hole blade being carried out can weld sealing of hole when the top plug-hole is handled.
8, processing method according to claim 1 is characterized in that impeller being carried out anti-corrosion protection when handling, and can adopt in the following technology one or more to combine: oxidation, spray paint, plastic-blasting.
9, processing method according to claim 1 is characterized in that and can blade and wheel hub be fixed as one by the method for welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100357405A CN100430180C (en) | 2004-09-15 | 2004-09-15 | Method for producing high efficiency energy saving fan vane using fin structure section bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100357405A CN100430180C (en) | 2004-09-15 | 2004-09-15 | Method for producing high efficiency energy saving fan vane using fin structure section bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1748933A true CN1748933A (en) | 2006-03-22 |
| CN100430180C CN100430180C (en) | 2008-11-05 |
Family
ID=36604692
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100357405A Expired - Fee Related CN100430180C (en) | 2004-09-15 | 2004-09-15 | Method for producing high efficiency energy saving fan vane using fin structure section bar |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949864A (en) * | 2014-04-04 | 2014-07-30 | 上海第一水泵厂有限公司 | Method for processing continuously cut blade |
| CN103967722A (en) * | 2014-03-24 | 2014-08-06 | 南京航空航天大学 | Fixed-pitch variable-speed horizontal-axis wind turbine installation angle adjusting device for small-scale experiment |
| US20140241868A1 (en) * | 2013-02-25 | 2014-08-28 | Greenheck Fan Corporation | Fan assemblies and stator assemblies |
| US9976560B2 (en) | 2013-02-25 | 2018-05-22 | Greenheck Fan Corporation | Mixed flow fan assembly |
| CN108296727A (en) * | 2018-04-27 | 2018-07-20 | 齐齐哈尔建华机械有限公司 | Eight wing aluminium section bars of one kind going fin method |
| US10125783B2 (en) | 2013-02-25 | 2018-11-13 | Greenheck Fan Corporation | Fan assembly and fan wheel assemblies |
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| JPS58135399A (en) * | 1982-02-05 | 1983-08-11 | Takasago Thermal Eng Co Lts | Blade angle varying apparatus for axial-flow fan |
| JPS59125230A (en) * | 1982-12-29 | 1984-07-19 | Showa Alum Corp | Production of twist formed product of blade for fan or the like |
| US5253419A (en) * | 1991-02-20 | 1993-10-19 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation "S.N.E.C.M.A." | Method of manufacturing a hollow blade for a turboshaft engine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140241868A1 (en) * | 2013-02-25 | 2014-08-28 | Greenheck Fan Corporation | Fan assemblies and stator assemblies |
| US9976560B2 (en) | 2013-02-25 | 2018-05-22 | Greenheck Fan Corporation | Mixed flow fan assembly |
| US10125783B2 (en) | 2013-02-25 | 2018-11-13 | Greenheck Fan Corporation | Fan assembly and fan wheel assemblies |
| US10184488B2 (en) * | 2013-02-25 | 2019-01-22 | Greenheck Fan Corporation | Fan housing having flush mounted stator blades |
| EP2959167B1 (en) * | 2013-02-25 | 2019-08-28 | Greenheck Fan Corporation | Fan assembly and fan wheel assemblies |
| CN103967722A (en) * | 2014-03-24 | 2014-08-06 | 南京航空航天大学 | Fixed-pitch variable-speed horizontal-axis wind turbine installation angle adjusting device for small-scale experiment |
| CN103967722B (en) * | 2014-03-24 | 2016-08-17 | 南京航空航天大学 | Small test fixed pitch variable speed horizontal-shaft wind turbine established angle adjusting means |
| CN103949864A (en) * | 2014-04-04 | 2014-07-30 | 上海第一水泵厂有限公司 | Method for processing continuously cut blade |
| CN108296727A (en) * | 2018-04-27 | 2018-07-20 | 齐齐哈尔建华机械有限公司 | Eight wing aluminium section bars of one kind going fin method |
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| CN100430180C (en) | 2008-11-05 |
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