CN206929131U - Axial flow blower 3 d impeller with leaf vein texture and non-homogeneous empennage - Google Patents

Abstract

The utility model discloses a kind of axial flow blower 3 d impeller with leaf vein texture and non-homogeneous empennage, including wheel hub, axle sleeve to be fixed on wheel hub with connector；Also include the twisted blade and splitterr vanes being fixedly connected on wheel hub；It is suction surface and pressure face that the twisted blade, which includes,；Aerofoil profile groove is provided with the top of the twisted blade；The first half of the twisted blade pressure face is provided with vein shape groove, and aerofoil profile groove is communicated by gas outlet with vein shape groove；The twisted blade suction surface afterbody is provided with winglet projection and intensive winglet；The intensive winglet is arranged on winglet projection both sides；Parabola aperture is provided with the twisted blade；Splitterr vanes are set between two neighboring twisted blade；The height of the splitterr vanes is less than the height of twisted blade half.

Description

Axial flow blower 3 d impeller with leaf vein texture and non-homogeneous empennage

Technical field

It the utility model is related to axial flow blower design field, it is more particularly to a kind of with leaf vein texture and non-homogeneous empennage Novel axial flow fan 3 d impeller.

Background technology

The operation principle of axial flow blower is that the mechanical energy of motor input is used for improving to the pressure of gas, is conveyed and is arranged Deflation body.Axial flow blower is played in the every field of national economy and acted on, be widely used in factory, mine, vehicle, vessel and Building etc., irreplaceable effect is played in terms of ventilation, dust discharge and cooling, according to incompletely statistics, all kinds of blower fans in the whole nation Year power consumption accounts for the 20% of national generating capacity, wherein many blower fans are not of the remote past, are exactly that efficiency is low, cause electric power Serious waste, it is seen that improve fan performance and realize importance of the energy-conservation in national economy.Axial flow blower is normally acting at flow It is required that occasion high and that pressure is low, structure is relatively easy and is easily installed, and plays the role of in blower fan field irreplaceable.

Although the structure of axial flow blower is simple, mobility status is really considerably complicated.Flowing often has three-dimensionality, viscous Property and non-stationarity, in conventional fan design seldom or be difficult comprehensively to consider these situations, even numerical analysis into Also being difficult to the influence for controlling above-mentioned factor to blower fan, particularly fluid ripe today has this sticky key factor, because viscous Property can usually make exit edge of blade formed blade wake passing whirlpool；Due to viscosity, blade surface can have viscous boundary layer (particularly In the case of blade surface unusual light), caused strong interaction, produces secondary flow phenomenon between main flow；Viscosity Presence can also form aerodynamic noise, mainly include rotational noise and eddy current crack.In addition, blade pressure surface and suction Secondary Flow caused by Radial Flow is also in the pressure difference in power face, the radial clearance of vane tip and casing and blade boundary layer itself Blower fan loss is caused to rise, the main contributor that efficiency reduces.

In summary, secondary flow phenomenon is only controlled and reduced, prevents boundary layer separation, suppresses the production of blade wake passing whirlpool Raw, the axial flow blower that efficiency high, performance are good, noise is low and save can just be designed by reducing turbulent dissipation and flow losses, be met Demand of the modern production to blower fan.

Utility model content

Problem to be solved in the utility model is in view of the shortcomings of the prior art by controlling and reducing Secondary Flow, border The generation of layer separation, tail whirlpool and eddy current crack, proposes a kind of Novel shaft stream wind with leaf vein texture and non-homogeneous empennage Machine 3 d impeller.The utility model can reduce secondary flow phenomenon, prevent boundary layer separation, suppress the generation of blade wake passing whirlpool, Turbulent dissipation and flow losses are reduced, there is efficiency high, performance is good, noise is low and the characteristics of energy-conservation.

In order to solve the above-mentioned technical problem, the utility model provides a kind of axle stream with leaf vein texture and non-homogeneous empennage Fan impeller, including wheel hub, axle sleeve are fixed on wheel hub with connector；Also include the bending leaf being fixedly connected on wheel hub Piece and splitterr vanes；

It is suction surface and pressure face that the twisted blade, which includes,；Aerofoil profile groove is provided with the top of the twisted blade；It is described curved The first half of twisted blade pressure face is provided with vein shape groove, and aerofoil profile groove is communicated by gas outlet with vein shape groove；It is described curved Twisted blade suction surface afterbody is provided with winglet projection and intensive winglet；The intensive winglet is arranged on winglet projection both sides；It is described Parabola aperture is provided with twisted blade；

Splitterr vanes are set between two neighboring twisted blade；The height of the splitterr vanes is less than twisted blade half Height.

Improvement as the axial flow blower 3 d impeller of the present utility model with leaf vein texture and non-homogeneous empennage：It is described Splitterr vanes are the root of kudzu vine court of a feudal ruler wing；The splitterr vanes are arranged on the middle of adjacent twisted blade.

As further changing for the axial flow blower 3 d impeller of the present utility model with leaf vein texture and non-homogeneous empennage Enter：The structure of the two sides of the splitterr vanes is identical, respectively for：At least two radially equidistant grooves are provided with side Group, each groove group include at least two bionical circular groove, the center line line of the bionical circular groove of each groove group perpendicular to The outer surface of wheel hub, bionical circular groove axial line is perpendicular to splitterr vanes.

As further changing for the axial flow blower 3 d impeller of the present utility model with leaf vein texture and non-homogeneous empennage Enter：The vein shape groove includes at least two arteries and veins grooves, and every arteries and veins groove and a gas outlet communicate, gas outlet and aerofoil profile groove phase It is logical.

As further changing for the axial flow blower 3 d impeller of the present utility model with leaf vein texture and non-homogeneous empennage Enter：The suction surface rear end of the twisted blade has been placed equidistant three winglet projections.

As further changing for the axial flow blower 3 d impeller of the present utility model with leaf vein texture and non-homogeneous empennage Enter：Eight twisted blades and eight splitterr vanes are equidistantly provided with the wheel hub.

As further changing for the axial flow blower 3 d impeller of the present utility model with leaf vein texture and non-homogeneous empennage Enter：15 ° -20 ° of the distortion of the twisted blade, bend 15 ° -20 °.

As further changing for the axial flow blower 3 d impeller of the present utility model with leaf vein texture and non-homogeneous empennage Enter：The height of the splitterr vanes is the 30%-40% of the height of twisted blade.

The utility model has advantages below：The utility model make it that blade root established angle is big by using twisted blade, Established angle is small at the top of twisted blade, ensures that diametrically each position has one than more uniform axial velocity to air, protects Normal work is demonstrate,proved, avoids air-flow from separating, flow losses is reduced and can effectively suppress the secondary flow inside leaf grating (static pressure is in C-type is distributed blade suction surface and pressure face pressure difference is less than common blade), while root degree of reaction can be improved, it is anti-to reduce top Dynamic degree, reach purpose of the homogenizing degree of reaction along the high distribution of leaf, improve the through-current capability of root；It is provided with the top of twisted blade pressure face Vein shape groove, twisted blade top are provided with aerofoil profile groove, and aerofoil profile groove is connected with vein shape groove by venthole, and the structure can Low speed secondary vortices are formed in vein shape groove, viscous drag is opposite with drag overall to reduce viscous drag in groove, suppresses turbulent flow Intensity, turbulent dissipation is reduced, the high energy gas on pressure face top can be drawn and bending is introduced by vein shape groove and venthole Vane tip aerofoil profile groove, prevents some gases from flowing to suction surface from pressure face by radial clearance, causes attached at the top of twisted blade The confusion closely flowed, improve the mobility status at the top of twisted blade, gas can also be avoided to be flowed to from the pressure face of twisted blade Horizontal secondary flow phenomenon caused by adjacent suction surface, so as to reach reduction flow losses, while vein shape groove also has commonly The effect of groove；Parabola aperture on twisted blade can reduce the pressure differential of blade suction surface and pressure face, improve blade week Boundary layer separation is enclosed, reduces the generation of eddy current crack；Non-homogeneous empennage increases runner interior air-flow except that can reduce secondary flow Stability, make gas boundary layer burble point to twisted blade trailing edge move, so as to improve flow efficiency, its is distinctive intensive small The wing can effectively eliminate twisted blade root and top due to twisted blade pressure towards adjacent twisted blade suction surface laterally flow Secondary Flow caused by dynamic, issuable big whirlpool is crushed, prevents the radial direction undercurrent from twisted blade root to leaf top, while also can Play a part of noise reduction；Splitterr vanes can effectively break whirlpool, make the flowing in runner more stable, reduce flow separation and Secondary Flow Etc. wild effect, bionical circular groove is provided with splitterr vanes can reduce skin friction drag, reduce flow resistance, reduce flowing Loss, while suppress the generation that whirlpool is made an uproar.Principle is relied on to be improved the effect for making axial flow blower in axial flow fan vane wheel diverse location Rate is higher, and performance is more preferable, more energy efficient environmental protection.

Brief description of the drawings

Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is the overall knot of novel axial flow fan 3 d impeller of the utility model with leaf vein texture and non-homogeneous empennage Structure schematic diagram；

Fig. 2 is the structural representation of the suction surface of twisted blade in Fig. 1；

Fig. 3 is the structural representation of the pressure face of twisted blade in Fig. 1；

Fig. 4 is the structural representation of splitterr vanes in Fig. 1；

Fig. 5 is the structural representation in splitterr vanes B-B faces in Fig. 4；

Fig. 6 is the structural representation in the C-C faces of twisted blade and winglet projection in Fig. 2；

Fig. 7 is the structural representation of the bionical circular groove of splitterr vanes in Fig. 1；

Fig. 8 is the structural representation of Fig. 1 wing centre section type grooves；

Fig. 9 is the cascade structure schematic diagram of twisted blade in Fig. 1；

Figure 10 is the structural representation of twisted blade bending and distortion in Fig. 1；

Figure 11 is the structural representation of intensive winglet 16.

Embodiment

The utility model is described further with reference to specific embodiment, but the scope of protection of the utility model is simultaneously It is not limited only to this.

Embodiment 1, the novel axial flow fan 3 d impeller with leaf vein texture and non-homogeneous empennage, as illustrated, including Wheel hub, the twisted blade 1 being fixedly connected on wheel hub and splitterr vanes 2, axle sleeve 3 and connector 4.

Twisted blade 1 includes suction surface 18 and pressure face 19, and it is recessed to be provided with vein shape at the top of the suction surface 18 of twisted blade 1 Groove 15, the rear end of twisted blade 1 are provided with winglet projection 13 and intensive winglet 16, and vein shape groove 15 includes at least two arteries and veins grooves, Established angle is big at the root of twisted blade 1, and top established angle is small, and (established angle is plane of rotation and aerofoil profile at the radius r of twisted blade 1 Angle between chord length, established angle are represented by the β 1 in figure and β 2), ensure that air diametrically has a comparison in each position Uniform axial velocity, ensure normal work, avoid air-flow from separating, reduce flow losses and effectively can suppress inside leaf grating Secondary flow (the C-shaped distribution of static pressure, so that blade suction surface 18 and the pressure difference of pressure face 19 are less than common blade), while energy The root degree of reaction of twisted blade 1 is enough improved, reduces the top degree of reaction of twisted blade 1, reaches homogenizing degree of reaction along the high distribution of leaf Purpose, improve the through-current capability of the root of twisted blade 1.Leaf grating refers on certain Radius r, is cut blade with its axial cylindrical face It is disconnected, the plane for then again transforming into this section, embody the adjacent position relationship of twisted blade 1, the established angle of twisted blade 1 etc..

Set winglet projection 13 and intensive winglet 16 fluid can be made to be moved in cascade internal flow in suction surface 18, due to bending leaf Piece 1 and fluid interaction, the pressure of blade pressure surface 19 are more than suction surface 18, and fluid is from the pressure face 19 of twisted blade 1 to suction Face 18 is flowed, and the air-flow for the suction surface 18 that incoming makes is more disorderly in addition, so design empennage makes air-flow be moved along tangential, controls Radial Flow processed, while the size of Passage Vortex and blade surface boundary-layer creep stream in the runner of twisted blade 1 can also be controlled, control The Secondary Flow of radial motion processed, reduce the uneven of speed, prevent tail jet, make the boundary layer of suction surface 18 of twisted blade 1 Burble point moves backward, reduces energy loss.

The top of twisted blade 1 is provided with aerofoil profile groove 11, and aerofoil profile groove 11 passes through some gas outlets 14 and the suction surface of twisted blade 1 The vein shape groove 15 at 18 tops communicates, and the structure can form low speed secondary vortices, vein shape groove in vein shape groove 15 Viscous drag is opposite with drag overall to reduce viscous drag in 15, suppresses turbulence intensity, reduction turbulent dissipation can be by bending The high energy gas on the top of 1 pressure face of blade 19 draws introduces leaf roof limb type groove 11 by vein shape groove 15 and gas outlet 14, prevents Some gases flow to suction surface 18 by radial clearance from pressure face 19, the confusion for causing the near top of twisted blade 1 to flow, change The mobility status at the kind top of twisted blade 1, can also avoid gas from flowing to adjacent suction surface from the pressure face 19 of twisted blade 1 Horizontal secondary flow phenomenon caused by 18, so as to reach reduction flow losses, while the aerofoil profile groove 11 at the top of twisted blade 1 also have it is general The effect of logical groove, whirlpool pad effect can be formed, reduces near wall region turbulence intensity.Parabola aperture is provided with twisted blade 1 12, parabola aperture 12 can reduce the pressure differential of the suction surface 18 of twisted blade 1 and pressure face 19, improve the surrounding side of twisted blade 1 Interlayer separates, and reduces the generation of eddy current crack；Non-homogeneous empennage increases the steady of runner interior air-flow except that can reduce secondary flow It is qualitative, gas boundary layer burble point is moved to the trailing edge of twisted blade 1, so as to improve flow efficiency, its distinctive intensive winglet Can effectively eliminate the root of twisted blade 1 and top due to twisted blade 1 suction surface 18 from pressure face 19 to adjacent twisted blade 1 Secondary Flow caused by lateral flow, issuable big whirlpool is crushed, prevents the radial direction undercurrent from the root of twisted blade 1 to top, It can also play a part of noise reduction simultaneously；Splitterr vanes 2 can effectively break whirlpool, make the flowing in runner more stable, reduce flowing point From with the wild effect such as Secondary Flow, skin friction drag can be reduced by being provided with bionical circular groove 23 on splitterr vanes 2, reduce flowing Resistance, flow losses are reduced, while suppress the generation that whirlpool is made an uproar.Splitterr vanes 2 are the root of kudzu vine court of a feudal ruler wing, are arranged on two neighboring bending leaf The middle of piece 1, two sides are equipped with radially equidistant groove group, and each groove group includes more than two bionical circular grooves 23, bionical circular groove 23 is set on the same line, and the center line line of the bionical circular groove 23 of each groove group is perpendicular to wheel hub Outer surface, the axial line of bionical circular groove 23 is perpendicular to splitterr vanes 2.Splitterr vanes 2 can effectively break whirlpool, make flowing in runner more Add stabilization, reduce the wild effect such as flow separation and Secondary Flow, the bionical circular groove 23 being provided with addition on twisted blade 1 can Skin friction drag is reduced, reduces flow resistance, reduces flow losses.It is general that the height of splitterr vanes 2 is less than twisted blade 1 Height, axle sleeve 3 is fixed on wheel hub with standard connector 4.Splitterr vanes 2 are to block the blade root of twisted blade 1 to separate Now from the pressure face 19 of twisted blade 1 to the horizontal flowing of blade suction surface 18 and broken whirlpool etc..

With reference to the operation principle of blade, the distortion of twisted blade 1 can guarantee that diametrically there is a ratio each position to air More uniform axial velocity, ensure normal work, avoid air-flow from separating, reduce flow losses, use for reference Wang Zhongqi (academician) root The boundary-layer transport theory proposed according to small blade diameter length ratio blade annular cascade static state blowing experiment and numerical result, i.e. bending After the circumferential skewing of blade 1, the active force of the surface of twisted blade 1 and air-flow is not equal to zero in the component of radial direction, so as to control pressure Distribution of the power along the height of twisted blade 1, after the circumferential skewing of twisted blade 1, the active force of the surface of twisted blade 1 and air-flow is in footpath To component be not equal to zero, so as to control distribution of the pressure along the height of twisted blade 1 so that on the surface of twisted blade 1, especially It is that the pressure distribution that pressure at two ends is high, intermediate pressure is low, i.e. " C " type pressure distribution are formd on suction surface 18, in its effect Under, both ends boundary-layer is drawn onto middle part and taken away by main flow, which reduces low energy fluid in 18 groups of end walls and suction surface Into corner at accumulation, avoid the generation of separation, thus the flow losses at both ends decline, secondly the pressure of twisted blade 1 The pressure difference of power face 19 and suction surface 18 is significantly less than common blade, and the horizontal Secondary Flow on end wall weakens, and corresponding horizontal two Secondary stream loss declines, and rational matching bending will make fan impeller obtain splendid performance, can improve level degree of reaction and improve level Through-current capability, postpone Passage Vortex and form the time and reduce the size and intensity of Passage Vortex, twisted blade 1 distorts 15 ° in the design - 20 °, 15 ° -20 ° are bent, while in order to more effectively reduce Secondary Flow, suppresses boundary layer thickness, controls the shape of tail wingtip vortex Into reducing turbulent dissipation etc. and devise vein shape groove 15, aerofoil profile groove 11, parabola aperture 12, winglet projection 13 and intensive small Wing 16 etc..

The utility model carries out bending design to the blade on wheel hub first, ensures that air-flow diametrically has each position One, than more uniform axial velocity, ensures normal work, avoids air-flow from separating, reduce flow losses and can effectively suppress Radial direction and horizontal Secondary Flow inside leaf grating, while root degree of reaction can be improved, top degree of reaction is reduced, it is anti-to reach homogenizing Purpose of the dynamic degree along the high distribution of leaf, the through-current capability of root is improved, postpone Passage Vortex and form the time and reduce the size of Passage Vortex And intensity；The vein shape groove 15 and the aerofoil profile groove 11 at the top of twisted blade 1 that the first half of 1 pressure face of twisted blade 19 is provided with pass through Gas outlet 14 is connected, and the structure can form low speed secondary vortices in the vein shape groove 15, viscous drag and drag overall phase in groove Instead to reduce viscous drag, suppress turbulence intensity, reduce turbulent dissipation, the high energy gas on the top of pressure face 19 can be drawn and passed through Leaf roof limb type groove 11 is introduced in vein shape groove 15 and gas outlet 14, prevents some gases from being flowed to by radial clearance from pressure face 19 Suction surface 18, the confusion for causing the near top of twisted blade 1 to flow, improve the mobility status on leaf top, can also avoid gas from The pressure face 19 of twisted blade 1 flows to horizontal secondary flow phenomenon caused by adjacent suction surface 18, and flowing damage is reduced so as to reach Lose, while the vein shape groove 15 at the top of twisted blade 1 also there are generic grooves, can form whirlpool pad effect, make near wall region Turbulence intensity is reduced；Parabola aperture 12 on twisted blade 1 can reduce the pressure differential of suction surface 18 and pressure face 19, improve curved The peripheral limit layer of twisted blade 1 separates, and reduces the generation of eddy current crack；Non-homogeneous empennage increases except that can reduce secondary flow The stability of runner interior air-flow, gas boundary layer burble point is set to be moved to the trailing edge of twisted blade 1, so as to improve flow efficiency, its Distinctive intensive winglet can effectively eliminate the pressure face 19 of twisted blade root and top due to twisted blade 1 to adjacent bending leaf Secondary Flow caused by the lateral flow of suction surface 18 of piece 1, issuable big whirlpool is crushed, prevented from the root of twisted blade 1 to top The radial direction undercurrent in portion, while can also play a part of noise reduction；Splitterr vanes 2 can effectively break whirlpool, make the flowing in runner more steady It is fixed, the wild effect such as flow separation and Secondary Flow is reduced, wall friction can be reduced by being provided with bionical circular groove 23 on splitterr vanes 2 Resistance, flow resistance is reduced, reduce flow losses, while suppress the generation that whirlpool is made an uproar.Rely on principle different in axial flow fan vane wheel Position, which is improved, makes the more efficient of axial flow blower, and performance is more preferable, more energy efficient environmental protection.

Twisted blade 1 be using etc. the design of circular rector Isolated Airfoil method airfoil fan, the thickness distribution of twisted blade 1 and NACA 4-digit number profile thickness is distributed identical, relative thickness of airfoil 10%-15%, and the quantity of twisted blade 1 is 8；Twisted blade 1 The groove depth of the aerofoil profile groove 11 at top is the 1%-2% of the height of twisted blade 1, and the thickness of aerofoil profile groove 11 is the top surface of twisted blade 1 50%-60%；Winglet projection 13 is equidistantly dispersed with the rear end of twisted blade 1, the both sides of winglet projection 13 are provided with intensive winglet 16, intensive winglet 16 is symmetric, arc projection, is to each other 1-2mm away from d4, if 6-8, the wing high 1-2mm, length d3 are small The 1/2-1/3 that pterygoid process rises, the intensive length of winglet 16 are slightly distinguished with noise reduction, as shown in figure 11.The spacing d1 of winglet projection 13 is curved The height H of twisted blade 1 18%-22%, the length d4 of winglet projection 13 are the 15%-17% of the chord length of twisted blade 1, with chord length Angle ω is 30 ° -40 °, from the 1%-3% that the back edge distance d5 of twisted blade 1 is the chord length of twisted blade 1；Twisted blade 1 In be dispersed with parabola aperture 12, aperture 1-2mm；The groove depth of vein shape groove 15 at the top of 1 pressure face of twisted blade 19 is 1- 2mm, maximum flute length are the 30%-40% of the height of twisted blade 1, and the spacing of arteries and veins groove be 20-30mm, and every arteries and veins groove is all individually with one Individual gas outlet 14 communicates, and the particular number of arteries and veins groove is depending on the size of twisted blade 1；Twisted blade 1 distorts 15 ° -20 °, bending 15°-20°.Bending refer to twisted blade 1 with etc. circular rector Isolated Airfoil method design when along horizontal middle section (with twisted blade 1 High vertical face) bend, i.e., the aerofoil section at different radii has corresponding spacing each other in the horizontal direction；Distortion refers to curved Twisted blade 1 with etc. circular rector Isolated Airfoil method design when along vertical middle section (the high parallel face with twisted blade 1) distortion, i.e., Aerofoil section at different radii distorts corresponding angle around vertical direction.Distort benefit：Not only so that the blade root of twisted blade 1 Place's established angle is big, and established angle is small at blade tip, moreover it is possible to ensures that diametrically each position has one than more uniform axial direction to air Speed, ensure normal work, avoid air-flow from separating, reduce flow losses.Bending and distortion benefit：Effectively it can suppress in leaf grating The secondary flow (suction surface 18 and the pressure difference of pressure face 19 of the C-shaped distribution twisted blade 1 of static pressure are less than common blade) in portion, simultaneously Root degree of reaction can be improved, reduces top degree of reaction, reaches purpose of the homogenizing degree of reaction along the high distribution of leaf, improves the logical of root Stream ability, postpone Passage Vortex and form the time and reduce the size and intensity of Passage Vortex.

Splitterr vanes 2 are the root of kudzu vine court of a feudal ruler wing, and the height of splitterr vanes 2 is the 30%-40% of the height of twisted blade 1, shunts leaf The two sides of piece 2 are equipped with n radially equidistant groove group (radially referring to along the short transverse of splitterr vanes 2), each groove group All it is again circle comprising c bionical circular grooves 23, the minimum spacing in bionical circular groove 23 and splitterr vanes 2 top, root, leading edge and rear end The 6%-12% of arc length, adjacent bionical circular groove 23 is to each other 5-8mm away from d, and the bionical radius of circular groove 23 is 1-2mm, n With c value specifically depending on the height of splitterr vanes 2 and width；Bionical circular groove 23 is linearly distributed, different bionical circular grooves 23 Spacing is fixed, and the spacing apart from surrounding can also be determined.Above-mentioned connector 4 is fixed on wheel hub with axle sleeve 3, and axle sleeve 3 is using conventional Axle sleeve, connector 4 is connected using standard component bolt by axle sleeve 3 with wheel hub.

Experiment one, by " the novel axial flow fan ternary leaf with leaf vein texture and non-homogeneous empennage described in embodiment 1 Wheel " is simply verified using CFD technologies, consistent on borders such as entrance velocity 2m/s, rotary speed 100rad/s In the case of, judge performance by measuring the static pressure of outlet, because axial flow blower is mainly the static pressure that mechanical energy is converted into wind, In the case of input power identical, the big explanation efficiency high of static pressure, turbulent dissipation and flow losses are less, i.e. Secondary Flow, tail Whirlpool etc. is obtained for effective control.

Comparative example 1：Cancel aerofoil profile groove 11 and the top of 1 suction surface of twisted blade 18 at the top of twisted blade 1 in embodiment 1 Vein shape groove 15, remaining is equal to embodiment 1, carries out comparative example 1.

Comparative example 2：Cancel the parabola aperture 12 in embodiment 1, remaining is equal to embodiment 1, carries out comparative example 2.

Comparative example 3：Cancel splitterr vanes 2 in embodiment 1, remaining is equal to embodiment 1, carries out comparative example 3.

Comparative example 4：Twisted blade 1 in embodiment 1 is substituted for common prismatic blade, remaining is equal to embodiment 1, carries out Comparative example 4.

By above-mentioned all comparative example 1-4, detected as tested a methods described, input power is identical, gained knot Fruit (referenmce atomsphere pressure) is respectively：

Operating mode	Exit static pressure
		Experiment one	196.03pa
Comparative example 1	163.02pa
		Comparative example 2	183.21pa
Comparative example 3	162.33pa
		Comparative example 4	145.02pa

The utility model under the same conditions under, compared to comparative example 1-4, exit static pressure has obtained significant raising, Illustrate that turbulent dissipation and flow losses have obtained obvious reduction.

Finally it should be noted that：Various embodiments above is merely to illustrate the technical solution of the utility model, rather than it is limited System；Although the utility model is described in detail with reference to each embodiment is signed, one of ordinary skill in the art should Understand：It can still modify to the technical scheme described in each embodiment in preceding place, either to which part or whole Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from utility model The scope of each embodiment scheme.

Claims (8)

1. the axial flow blower 3 d impeller with leaf vein texture and non-homogeneous empennage, including wheel hub, axle sleeve (3) connector (4) It is fixed on wheel hub；It is characterized in that：Also include the twisted blade (1) and splitterr vanes (2) being fixedly connected on wheel hub；

It is suction surface (18) and pressure face (19) that the twisted blade (1), which includes,；Aerofoil profile is provided with the top of the twisted blade (1) Groove (11)；The first half of twisted blade (1) pressure face is provided with vein shape groove (15), and aerofoil profile groove (11) passes through gas outlet (14) communicated with vein shape groove (15)；Twisted blade (1) the suction surface afterbody is provided with winglet projection (13) and intensive small The wing (16)；The intensive winglet (16) is arranged on winglet projection (13) both sides；It is small that parabola is provided with the twisted blade (1) Hole (12)；

Splitterr vanes (2) are set between two neighboring twisted blade (1)；The height of the splitterr vanes (2) is less than bending leaf The height of piece (1) half.

2. the axial flow blower 3 d impeller according to claim 1 with leaf vein texture and non-homogeneous empennage, its feature exist In：The splitterr vanes (2) are the root of kudzu vine court of a feudal ruler wing；The splitterr vanes (2) are arranged on the middle of adjacent twisted blade (1).

3. the axial flow blower 3 d impeller according to claim 2 with leaf vein texture and non-homogeneous empennage, its feature exist In：The structure of the two sides of the splitterr vanes (2) is identical, respectively for：It is radially equidistant that at least two are provided with side Groove group, each groove group include at least two bionical circular groove (23), the center of the bionical circular groove (23) of each groove group Line line is perpendicular to the outer surface of wheel hub, and bionical circular groove (23) axial line is perpendicular to splitterr vanes (2).

4. the axial flow blower 3 d impeller according to claim 3 with leaf vein texture and non-homogeneous empennage, its feature exist In：The vein shape groove (15) includes at least two arteries and veins grooves, and every arteries and veins groove and a gas outlet (14) communicate, gas outlet (14) Communicated with aerofoil profile groove (11).

5. the axial flow blower 3 d impeller according to claim 4 with leaf vein texture and non-homogeneous empennage, its feature exist In：Suction surface (18) rear end of the twisted blade (1) has been placed equidistant three winglet projections (13).

6. the axial flow blower 3 d impeller according to claim 5 with leaf vein texture and non-homogeneous empennage, its feature exist In：Eight twisted blades (1) and eight splitterr vanes (2) are equidistantly provided with the wheel hub.

7. the axial flow blower 3 d impeller according to claim 6 with leaf vein texture and non-homogeneous empennage, its feature exist In：15 ° -20 ° of the distortion of the twisted blade (1), bend 15 ° -20 °.

8. the axial flow blower 3 d impeller according to claim 7 with leaf vein texture and non-homogeneous empennage, its feature exist In：The height of the splitterr vanes (2) is the 30%-40% of the height of twisted blade (1).