CN102966591B - Axial flow type fluid driving device - Google Patents
Axial flow type fluid driving device Download PDFInfo
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- CN102966591B CN102966591B CN201210459006.6A CN201210459006A CN102966591B CN 102966591 B CN102966591 B CN 102966591B CN 201210459006 A CN201210459006 A CN 201210459006A CN 102966591 B CN102966591 B CN 102966591B
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Abstract
The invention belongs to the field of fluid machines and relates to an axial flow type fluid driving device. The axial flow type fluid driving device comprises a hub, fan blades and a fairing which rotate together, wherein the fan blades are of radial fan blade structures and are arranged between the hub and the fairing. The axial flow type fluid driving device is characterized in that suspension blades are arranged on the axial flow type fluid driving device; the inner end of the suspension blades are of a cantilever structure; and the outer end of the suspension blades are in fastening connection with the fairing or are integrally formed with the fairing. Due to the adoption of the suspension blade structure, at least part of fan blades and the hub are not connected to yield part of axial inlet channel area, further the passing flow of a working medium can be increased and the conveying efficiency of the device is increased. The weight and the rotary inertia are reduced, so that the possibility of fatigue damage of a driving shaft of the device is reduced; the lengths of the blades are inconsistent, so that the action rules of the blades for the working medium or the action rules of the working medium for the blades are inconsistent, the noises can be reduced by suppressing the resonance phenomenon and the work reliability of the device is improved.
Description
Technical field
The invention belongs to fluid machinery technical field, relate to a kind of fluid drive apparatus, relate in particular to a kind of axial-flow fluid drive unit, more specifically to blade structure and the layout of a kind of axial flow fan and axial--flow blading pump.
Background technique
Axial-flow fluid drive unit comprises axial flow fan and axial--flow blading pump etc., belongs to typical fluid machinery.The function of axial-flow fluid drive unit carrys out driving fluid working medium by the rotation of flabellum, makes it to produce mainly along the flowing of the axial direction of live axle.The working medium of axial flow fan conveying is generally the fluid of gaseous state shape, and the working medium of axial--flow blading transport pump is then generally the fluid of liquid state.No matter be axial flow fan or axial--flow blading pump, the working medium of their conveyings is not only only the fluid of single kind material and single fluidised form, and the fluid-mixing of multiple different material and different shape is included toward contact, the flowing property of the working medium of therefore their conveyings usually includes mixed flow and multiphase flow.
Traditional axial flow drive unit includes wheel hub, flabellum and cowling, and wherein flabellum adopts radial being arranged between wheel hub and cowling.The classical layout of the one of axial flow drive unit be wheel hub, flabellum and cowling are made of one structure and together with rotate, the cooling fan of such as computer chip and some pipeline vane pump etc. just adopt this class formation, now the inner of flabellum is connected with wheel hub, the outer end of flabellum is connected with cowling, flabellum is the strip of sheet blade with one fixed width, and flabellum and its plane of rotation have certain inclination angle and produce axial driving force with convection cell working medium.Obviously, the structure of above-mentioned integrated type axial flow drive unit is very simple, is applicable to very much being arranged in the workplace that space is subject to harsh restriction.But, above-mentioned integrated type axial flow drive unit but has obvious defect, be mainly reflected in three aspects: the scheme 1) owing to adopting the root of each blade to be all connected with wheel hub, make to be blocked because blade is too intensive near the axial inlet passage cross section of wheel hub, result hampers passing through of more fluid working medium, reduce the transfer efficiency of device in other words, this shortcoming shows particularly outstanding on small-sized axial flow fan and axial--flow blading pump; 2) scheme owing to adopting the root of each blade to be all connected with wheel hub, the oeverall quality of device is caused especially to cause the rotary inertia of whole device larger comparatively greatly, make the moment of inertia of device larger under the same operating conditions, result increases the burden of device live axle, and this point is for the fatigue fracture very easily causing live axle some fans of the intermittent cycle work such as frequent starting-running-stopping or pump; 3) scheme owing to adopting the root of each blade to be all connected with wheel hub, make the structural element of every a slice blade as substantially identical or similar in size, form and layout etc., to such an extent as to they to the action rule of working medium or working medium all very similar for the action rule of blade, result very easily causes the generation of resonance phenomenon, not only can produce larger running noises, but also the functional reliability of device can be endangered.
Summary of the invention
For the above-mentioned defect that conventional one drive unit exists, the present invention proposes a kind of axial-flow fluid drive unit, object is that the axial inlet passage area effectively increasing axial flow drive unit is on the one hand to improve the transfer efficiency of device, reduce on the other hand effectively the quality of axial flow drive unit and rotary inertia to reduce the chance that fatigue ruption appears in its live axle, can also effectively suppress the generation of resonance phenomenon to reduce noise and to improve the functional reliability of device in addition.
The object of the present invention is achieved like this: a kind of axial-flow fluid drive unit, comprise wheel hub, flabellum and cowling, wherein flabellum employing is radial is arranged between wheel hub and cowling, it is characterized in that: be provided with unsettled blade, the inner of described unsettled blade adopts cantilever structure, and the outer end of unsettled blade and cowling are fastenedly connected or are structure as a whole with cowling and make.
The specification of two or more length is included in above-mentioned unsettled blade.
Driveshaft is connected with between above-mentioned wheel hub and cowling.
Above-mentioned flabellum is all unsettled blade.
Above-mentioned flabellum is or/and unsettled leaf packet contains the blade structure of curve arrangement of radiation.
Above-mentioned flabellum is or/and the unsettled blade layout being distributed as not decile angle along the circumferential direction.
Above-mentioned flabellum is or/and unsettled blade in axial direction includes different plane of rotations.
Above-mentioned flabellum is or/and unsettled leaf packet contains different inflow angle of attack.
Above-mentioned flabellum is or/and unsettled leaf packet contains and different goes out to flow the angle of attack.
The purposes of above-mentioned axial-flow fluid drive unit is fan or fluid pump.
The advantage that the present invention gives prominence to compared to existing technology is: adopt unsettled blade structure, some axial inlet passage areas are made a concession out owing to having at least partial blade not to be connected with wheel hub, can effectively increase accordingly fluid working substance by flow, thus improve the transfer efficiency of device; In addition, because unsettled blade is much shorter than traditional flabellum, accordingly can alleviator quality and reduce the rotary inertia of device, thus save material and reduce the chance that fatigue ruption appears in device live axle; Further, owing to there is blade structure different in size, make blade to the action rule of working medium or working medium no longer uniform for the action rule of blade, result effectively can suppress resonance phenomenon thus reduces noise and improve the functional reliability of device.
Accompanying drawing explanation
Fig. 1 is that the axle of a kind of axial-flow fluid drive unit of the present invention measures intention;
Fig. 2 is the axial direction projection view of a kind of axial-flow fluid drive unit of the present invention shown in Fig. 1;
Fig. 3 is the blade inflow angle of attack of Fig. 2 blade at circumferential section M-M place and the sign schematic diagram going out to flow the angle of attack;
Fig. 4 is the schematic diagram that a kind of axial-flow fluid drive unit of the present invention includes driveshaft;
Fig. 5 is the schematic diagram that the whole flabellum of a kind of axial-flow fluid of the present invention drive unit is unsettled blade.
Embodiment
With specific embodiment, the invention will be further described below, see Fig. 1-5:
A kind of axial-flow fluid drive unit, it comprises wheel hub 1, flabellum 2 and cowling 3, wherein flabellum 2 adopts and is radially arranged between wheel hub 1 and cowling 3, wheel hub 1, flabellum 2 synchronous rotary together with cowling 3, described flabellum 2 is for having the strip of sheet blade of one fixed width, and flabellum 2 and its plane of rotation have certain inclination angle and produce axial driving force with convection cell working medium; Characteristic of the present invention is: be provided with unsettled blade 4, and the inner of described unsettled blade 4 adopts cantilever structure, and the outer end of unsettled blade 4 and cowling 3 are fastenedly connected or are structure as a whole with cowling 3 and make; Cowling 3 can be that loop-like structure (as depicted in figs. 1 and 2) also can be out ring structure (not shown), wherein with loop-like structure for the best, the transverse section of cowling 3 can be various shape, cowling 3 can play increase rigidity and transferring power effect, convection cell working medium can also produce certain guiding function if desired; It is to be noted, in the present invention, said unsettled blade 4 and flabellum 2 are all referred to as blade, wherein so-called flabellum 2 is the traditional common blade be all connected with wheel hub 1 and cowling 3, and so-called unsettled blade 4 is refer to be connected with cowling 3 but with wheel hub 1, the blade that is directly connected do not occur, no matter unsettled blade 4 or flabellum 2 they all there is the function of similar driving fluid working medium, unsettled blade 4 also has certain inclination angle with its plane of rotation; There is not annexation owing to having unsettled blade 4 with wheel hub 1 in the present invention, thus makes a concession out some axial inlet passage sectional areas A, therefore can effectively increase fluid working substance by flow, thus the transfer efficiency of device can be improved; In addition, the present invention is owing to adopting the topology layout of unsettled blade 4, therefore can the quality of effective alleviator compared with the topology layout all adopting flabellum 2 with tradition, particularly can reduce the rotary inertia of device, therefore therefore it also reduce the twisting inertia moment of device live axle (not shown) effect, result is conducive to the chance that fatigue ruption appears in minimizing live axle, this point, for very important some fans of the intermittent cycle work such as frequent starting-running-stopping or pump, certainly adopted unsettled blade 4 structure and can also be saved material; The present invention is owing to having blade different in size, thus make blade to the action rule of working medium or working medium no longer uniform to the action rule of blade, result can suppress resonance phenomenon effectively, and therefore reduces the functional reliability of noise and raising device.It should be noted that, can adopt the unsettled blade 4 of unequal length specification, the effect of suppression resonance like this can be better.It should be noted that in addition, driveshaft 5 can be set between wheel hub 1 and cowling 3, described driveshaft 5 is in roofbolt shape, now come from the rotating power of wheel hub 1 or independently pass to cowling 3 via driveshaft 5 or pass to cowling 3 via driveshaft 5 and flabellum 2, finally driving unsettled blade 4 to rotate again by cowling 3.Under the prerequisite being provided with driveshaft 5, all flabellums 2 all can be designed to unsettled blade 4 structure, the axial inlet passage sectional area A that now unsettled blade 4 is made a concession out will be larger, this means the fluid working substance that can pass through more large discharge.In order to obtain better fluid dynamic effect, can by flabellum 2 or/and unsettled blade 4 be partly or entirely designed to the blade (not shown) of curve arrangement of radiation, that is blade structure of the present invention can not be confined to the layout of radial shape.In addition, in order to the resonance phenomenon of restraining device better, blade distribution along the circumferential direction can be set to the layout (not shown) of not decile angle; Layout blade being in axial direction set to not same plane of rotation also can suppress the generation of resonance phenomenon, such as unsettled blade 4 all can be arranged on a plane of rotation and other flabellums 2 be all arranged in (not shown) on another plane of rotation, especially, it should be noted that, in the present invention, the plane of rotation of certain blade said is a general reference, it be meant to this blade its inswept rotary space after completing a complete revolution job; As everyone knows, the action effect impact of the inclination degree convection cell working medium of blade is very large, be reflected on structural parameter be exactly blade inflow angle of attack θ and to go out to flow the relationship between efficiency of angle of attack β fluid delivery close, generally corresponding each working speed n also exists the inflow angle of attack θ of certain limit numerical value and goes out to flow angle of attack β and make the transfer efficiency of device best, if off-target inflow angle of attack θ and best to go out to flow angle of attack β comparatively far away, easily produces the serious phenomenon such as eddy current, surge and causes transfer efficiency to be deteriorated even damaging device; in the present invention (see Fig. 3), so-called inflow angle of attack θ refers to that become a mandarin tangent line and this blade inlet place blade of blade inlet place Leaf Conductance stream interface B revolve angle windward that velocity attitude formed or be called the angle that becomes a mandarin, so-calledly go out to flow angle of attack β and refer to that to flow tangent line and this blade exit place blade of blade exit place Leaf Conductance stream interface B revolve air-supply angle that velocity attitude formed or be called stream angle, become a mandarin angle and go out to flow angle and can characterize with Fig. 3: Figure 3 shows that certain blade carries out the generalized section (see Fig. 2) in the M-M direction blocked along certain circumference L, wherein circumference L is coaxial layout with the spin axis O of the live axle of device, now on this blade section, fluid is P point along guide face B entrance and exit point is Q point, obvious blade P point is v with the speed of Q point and consistent with the sense of rotation of blade (v is said velocity of moving space in theoretical mechanics), the streamline that enters of P point points to and enters blade and the streamline that goes out of Q point departs from and flows out blade, usually the inflow angle of attack θ of P point is acute angle and the angle of attack β that goes out to flow of Q point is obtuse angle, usually entering streamline in addition and going out streamline is that in other words inflow angle of attack θ and the tolerance that goes out to flow angle of attack β are generally three dimensional space angle to space line, obviously in order to reduce resonance odds, the inflow angle of attack θ of blade can be designed to different numerical value, such as become to include the inflow angle of attack θ (not shown) of different numerical value by same blade design, or although same blade has identical inflow angle of attack θ but can have the inflow angle of attack θ (not shown) of different numerical value between different blades, therewith similar also same blade design can be become include different numerical value go out to flow angle of attack β (not shown), although or same blade have identical go out to flow angle of attack β but can have different numerical value between different blades go out to flow angle of attack β (not shown).
A kind of axial-flow fluid drive unit of the present invention, its purposes is fan or fluid pump, so-called fan refers to that working medium that it drives is mainly the material of air or other gaseous state shape, and so-called fluid pump refers to that working medium that it drives is mainly the material of water or wet goods liquid state.
The present invention, owing to adopting unsettled blade 4 structure, makes a concession out some axial inlet passage area A owing to having at least partial blade not to be connected with wheel hub 1, therefore can effectively increase fluid working substance by flow, thus the transfer efficiency of device can be improved; In addition, because unsettled blade 4 is much shorter than traditional blade, therefore alleviate the quality of device and reduce the rotary inertia of device, saved the material of device thus and reduced the chance that fatigue ruption appears in device live axle; Further, owing to there is blade different in size, make blade to the action rule of working medium or working medium no longer uniform for the action rule of blade, result effectively can suppress resonance phenomenon and therefore reduces noise and improve the functional reliability of device.
Above-described embodiment is only preferred embodiment of the present invention, not limits the scope of the invention according to this, therefore: all equivalence changes done according to structure of the present invention, shape, principle, all should be covered by within protection scope of the present invention.
Claims (2)
1. an axial-flow fluid drive unit, it comprises wheel hub, flabellum and cowling, wherein flabellum employing is radial is arranged between wheel hub and cowling, it is characterized in that described flabellum is all unsettled blade, the inner of unsettled blade adopts cantilever structure, the outer end of unsettled blade and cowling are fastenedly connected or are structure as a whole with cowling and make, the specification of two or more length is included in described unsettled blade, driveshaft is connected with between described wheel hub and cowling, described unsettled leaf packet contains the blade structure of curve arrangement of radiation, the described unsettled blade layout being distributed as not decile angle along the circumferential direction, described unsettled blade in axial direction includes different plane of rotations, described unsettled leaf packet contains different inflow angle of attack, described unsettled leaf packet contains different to go out to flow the angle of attack.
2. a kind of axial-flow fluid drive unit according to claim 1, its purposes is fan or fluid pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210459006.6A CN102966591B (en) | 2012-11-14 | 2012-11-14 | Axial flow type fluid driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210459006.6A CN102966591B (en) | 2012-11-14 | 2012-11-14 | Axial flow type fluid driving device |
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| Publication Number | Publication Date |
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| CN102966591A CN102966591A (en) | 2013-03-13 |
| CN102966591B true CN102966591B (en) | 2015-01-21 |
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| CN201210459006.6A Active CN102966591B (en) | 2012-11-14 | 2012-11-14 | Axial flow type fluid driving device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103285633B (en) * | 2013-06-13 | 2014-12-10 | 安徽国祯环保节能科技股份有限公司 | Stirring impeller of sand removing machine in vortex-type grit chamber |
| CN106208522B (en) * | 2016-07-28 | 2019-04-23 | 芜湖杰诺瑞汽车电器系统有限公司 | A kind of automobile current generator |
| CN106286350B (en) * | 2016-11-04 | 2019-03-05 | 广州市隧成建业物业发展有限公司 | Special fan |
| FR3108065B1 (en) * | 2020-03-13 | 2022-02-18 | Valeo Systemes Thermiques | VENTILATION SYSTEM FOR ENGINE |
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|---|---|---|---|---|
| US6468037B1 (en) * | 1999-08-06 | 2002-10-22 | American Cooling Systems, Llc | Fan clutch with central vanes to move air to fan blades |
| US6488472B1 (en) * | 2000-01-28 | 2002-12-03 | Seiko Epson Corporation | Axial fan, centrifugal fan, and electronic equipment employing one of these fans |
| CN2549227Y (en) * | 2002-05-14 | 2003-05-07 | 李国良 | Blade base of fan |
| CN1587714A (en) * | 2004-07-19 | 2005-03-02 | 吴伟 | Low noise high pressure centrifugal fan |
| EP1813820A1 (en) * | 2006-01-27 | 2007-08-01 | Faurecia Cooling Systems | Automotive fan and associated front unit |
| CN101008401A (en) * | 2006-01-26 | 2007-08-01 | 赵汉高 | Combined type fan flabellum with low noise |
| CN202914371U (en) * | 2012-11-14 | 2013-05-01 | 浙江鸿友压缩机制造有限公司 | Axial-flow type fluid driving device |
-
2012
- 2012-11-14 CN CN201210459006.6A patent/CN102966591B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6468037B1 (en) * | 1999-08-06 | 2002-10-22 | American Cooling Systems, Llc | Fan clutch with central vanes to move air to fan blades |
| US6488472B1 (en) * | 2000-01-28 | 2002-12-03 | Seiko Epson Corporation | Axial fan, centrifugal fan, and electronic equipment employing one of these fans |
| CN2549227Y (en) * | 2002-05-14 | 2003-05-07 | 李国良 | Blade base of fan |
| CN1587714A (en) * | 2004-07-19 | 2005-03-02 | 吴伟 | Low noise high pressure centrifugal fan |
| CN101008401A (en) * | 2006-01-26 | 2007-08-01 | 赵汉高 | Combined type fan flabellum with low noise |
| EP1813820A1 (en) * | 2006-01-27 | 2007-08-01 | Faurecia Cooling Systems | Automotive fan and associated front unit |
| CN202914371U (en) * | 2012-11-14 | 2013-05-01 | 浙江鸿友压缩机制造有限公司 | Axial-flow type fluid driving device |
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| CN102966591A (en) | 2013-03-13 |
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