CN103185013B - Axial fan - Google Patents
Axial fan Download PDFInfo
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- CN103185013B CN103185013B CN201210028863.0A CN201210028863A CN103185013B CN 103185013 B CN103185013 B CN 103185013B CN 201210028863 A CN201210028863 A CN 201210028863A CN 103185013 B CN103185013 B CN 103185013B
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Abstract
The invention provides a kind of axial fan, it comprises: impeller, and this impeller has multiple rotor blade and can enclose and can rotate around central axis; Motor, this motor drives impeller; Base portion, this base portion supports motor; Housing, this housing comprises intake grill, exhaust outlet and the inner peripheral surface around impeller and motor; And multiple stator vane, base portion is connected with housing by described multiple stator vane respectively, wherein inner peripheral surface comprises the first inner peripheral surface and recess, first inner peripheral surface is arranged to increase towards intake grill or exhaust outlet in the axial direction with the distance of central axis, and recess to be arranged in the first inner peripheral surface and multiple stator vane between an included stator vane and towards the first inner peripheral surface.Therefore, allow gas flow smooth ground by housing, cause the noise produced in described fan to reduce.
Description
Technical field
The present invention relates to a kind of axial fan.
Background technique
Fig. 1 is the stereogram of conventional axial fan 10.Axial fan 10 comprises housing 101, multiple stator vane 102 and pedestal 103.Housing 101 is for being provided with the hollow member of intake grill and exhaust outlet.Form diameter-increasing portion 101a at the exhaust outlet place of housing 101, and be provided with stator vane 102 and pedestal 103.Housing 101, stator vane 102 and pedestal 103 are formed by molding and forming resin.
In injection molding process, form a mould by combining two kinds of mold components (i.e. stationary mould part and movable mold part).The resin of melting is poured in mould and then cools.Subsequently, the resin of cooling and sclerosis is taken out mould.Thus housing 101, stator vane 102 and pedestal 103 are formed as a component.
Be provided with multiple bearing 104, these bearings 104 are formed at the position that diameter-increasing portion 101a engages respectively with stator vane 102.When having the integrated moulding part of housing 101, stator vane 102 and pedestal 103 from the direction observation of taking out mould, bearing 104 is positioned at blind portion.When air is discharged from exhaust outlet and clashes into bearing 104, occur the problem producing noise, and throughput and air-flow static pressure reduce.
Summary of the invention
Various preferred implementation of the present invention provides a kind of axial fan, and it comprises: impeller, and this impeller comprises multiple rotor blade and can rotate around central axis; Motor, this motor drives impeller in a rotative pattern; Base portion, this base portion supports motor; Housing, this housing comprises intake grill, exhaust outlet and the inner peripheral surface around impeller and motor; And multiple stator vane, base portion is connected with housing by the plurality of stator vane respectively, wherein inner peripheral surface comprises the first inner peripheral surface and recess, first inner peripheral surface is arranged to make the distance of itself and central axis to increase towards intake grill or exhaust outlet in the axial direction, between the stator vane of recess in the first inner peripheral surface and multiple stator vane and towards the first inner peripheral surface.
According to above-mentioned structure, allow gas flow smooth ground by housing, cause the noise produced in axial fan to reduce.In addition, can prevent from sucking or discharging the throughput of axial fan and the reduction of air-flow static pressure.In addition, the resin molded housing of available less amount, thus the remarkable reduction realizing axial fan manufacture cost.
With reference to accompanying drawing, from the following detailed description of the preferred embodiment of the present invention, will clearer above and other feature of the present invention, parts, advantage and feature.
Accompanying drawing explanation
Fig. 1 is the stereogram of conventional axial fan.
Fig. 2 is the stereogram of axial fan according to the first preferred embodiment of the present invention.
Fig. 3 is the planimetric map of the axial fan shown in Fig. 2 when observing from its air side.
Fig. 4 is the sectional view of axial fan shown in Fig. 2.
Fig. 5 is the sectional view of the axial fan according to the first preferred variant of the present invention.
Fig. 6 is the sectional view of the axial fan according to the second preferred variant of the present invention.
Fig. 7 is the sectional view of the axial fan according to the second preferred implementation of the present invention.
Fig. 8 is the sectional view of the axial fan according to the 3rd preferred implementation of the present invention.
Embodiment
With reference to Fig. 2 to Fig. 8 in detail, the preferred embodiment of the present invention will be described.It should be noted that, in the explanation of the preferred embodiment of the present invention, when the position relationship between different parts and orientation are described to up/down or left/right, refer to the final position relation in accompanying drawing and orientation; Instead of refer in the position relationship be assembled between actual device back part and orientation.Meanwhile, in the following description, axially refer to parallel or substantially parallel in the direction of spin axis, and radial direction refer to vertically or is approximately perpendicular to the direction of spin axis.
Fig. 2, Fig. 3 and Fig. 4 are the stereogram of the first preferred implementation according to axial fan 11 of the present invention, planimetric map and sectional view respectively.
As shown in Fig. 2, Fig. 3 and Fig. 4, axial fan 11 preferably includes impeller 12, multiple stator vane 13, motor part 14 and housing 18.Impeller 12 preferably by motor part 14 around central axis 23 rotary actuation.Housing 18 is preferably the hollow member being provided with exhaust outlet 41 and intake grill 43.Stator vane 13 is preferably arranged on exhaust outlet 41 place, and utilizes molding and forming resin and housing 18 to form.Alternatively, stator vane 13 and housing 18 are integrally formed as single part by aluminium die casting.
As shown in Figure 4, impeller 12 preferably includes roughly having of tubular and pushes up cup 21 and multiple rotor blade 22.Rotor blade 22 is preferably arranged to separate equally spacedly each other in the circumferential around central axis 23 on the outer circumferential face of the cylindrical wall of cup 21.Preferably, rotor holder 121 is fixed with in the inside of cup 21.Rotor holder 121 is preferably the roughly tubular elements having top be made up of magnetic material (such as metallic material).Rotor holder 121 preferably includes tubular inner peripheral surface, and roughly the rotor magnet 31 of ring-type is fixed to this surface.The axle 123 top portion being fixed with roughly column by modes such as press fits is had at rotor holder 121.
As shown in Figure 4, motor part 14 to be preferably arranged in impeller 12 and to comprise stator 141 (partly illustrating) and circuit board (not shown).Stator 141 is preferably electrically connected to circuit board facing radially towards rotor magnet 31.Circuit board and stator 141 receive preferably by many lead-in wire (not shown) the electric current and control signal that send from external power supply (not shown).When stator 141 is supplied with electric current, in generation magnetic field, stator 141 place.Interaction between the magnetic field that stator 141 place produces and the magnetic field of rotor magnet 31 causes moment of torsion between stator 141 and rotor magnet 31.Such moment of torsion preferably around central axis 23 rotary actuation impeller 12 to cause the air-flow of centrally axis 23.It should be noted that, in the diagram, air, from axially the downward effluent of lateral axis is dynamic, namely flows from intake grill 43 to exhaust outlet 41.
As shown in Fig. 2, Fig. 3 and Fig. 4, housing 18 has housing 15 and base portion 16.Housing 15 is preferably the hollow member of roughly square cylindrical shape.In plan view, housing 15 preferably includes profile that is substantially rectangular or circular, and comprises the inner peripheral surface 40 of circular.
Inner peripheral surface 40 preferably includes the inlet side first inner peripheral surface 42a respectively at four angles place or the whole inner region setting along intake grill 43.Inlet side first inner peripheral surface 42a is preferably formed as the radial distance between central axis 23 and inner peripheral surface 40 is increased gradually towards intake grill 43 in the axial direction.Similarly, inner peripheral surface 40 preferably includes air side first inner peripheral surface 42b, air side first inner peripheral surface 42b is separately positioned on corner place or arranges along the whole inner region of exhaust outlet 41, is arranged to the radial distance between central axis 23 and inner peripheral surface 40 is increased gradually towards exhaust outlet 41 in the axial direction.
As shown in Figure 4, inner peripheral surface 40 preferably includes the second inner peripheral surface 45 formed substantially in parallel with central axis 23.Second inner peripheral surface 45 and corresponding first inner peripheral surface 42 preferably continuous smoothly each other.
What base portion 16 was preferably roughly column has end component, and axially support motor part 14.Base portion 16 is preferably arranged in housing 15 at intake grill 43 place in the axial direction.Base portion 16 preferably includes axial air-out side surface, and this surface flushes relative to the axial air-out side end 15a of housing 15.
As shown in Fig. 2, Fig. 3 and Fig. 4, stator vane 13 is preferably arranged between the inner peripheral surface 40 of housing 15 and the outer circumferential face of base portion 16, is arranged to separate equally spacedly each other in the circumferential, thus serves as the connector between inner peripheral surface 40 and base portion 16.Stator vane 13 all preferably includes the first edge 26, edge 25, second, first surface 27 and second surface 28.First surface 27 and second surface 28 preferably tilt relative to central axis 23, and the first edge 25 is presented axially in inlet side, and the second edge 26 is then positioned at air side.First edge 25 is preferably formed as the opposition side being positioned at Second Edge edge 26 on the sense of rotation R of impeller 12.First surface 27 is preferably oriented to contrary with the sense of rotation R of impeller 12, so that the air-flow that primary recipient is produced by the rotation of impeller 12.It should be noted that, impeller 12 turns clockwise in the direction of rotation R around central axis 23, as shown in Figure 2.In addition, stator vane 13 all preferably includes the axial cross section in the blade shape with curved surface.According to this structure, the air circulation component produced by the rotation of impeller 12 is converted into the component that centrally axis 23 flows, thus static air pressure is increased.
Alternatively, first surface 27 and second surface 28 can manufacture and tilt different angles relative to central axis 23, to make air-flow be directed to any direction, and such as radially outward direction.Stator vane 13 can not be arranged on exhaust outlet 41 place in the axial direction, but is arranged on intake grill 43 place.In this case, the second edge 26 is positioned at the opposition side at the first edge 25 on the sense of rotation R of impeller 12.Air is directed and be inhaled in housing 18 by stator vane 13.Therefore, the noise produced by the air-flow clashing into inner peripheral surface 40 grade is reduced.
As shown in Fig. 2, Fig. 3 and Fig. 4, multiple stator vane 13 preferably includes multiple first stator vane 13A, and the air side first inner peripheral surface 42b of each first stator vane 13A all from central axis 23 to correspondence extends.The position be connected with air side first inner peripheral surface 42b at first outward edge 53 of each first stator vane 13A forms recess 52.Recess 52 be preferably by the first outward edge 53 and corresponding air side first inner peripheral surface 42b around space.In other words, the air side first inner peripheral surface 42b that the axial air-out side end of the first outward edge 53 is radially corresponding, and recess 52 is accompanied between the two.On the other hand, the air inlet through hollow shaft side end of the first outward edge 53 is connected to the second inner peripheral surface 45.
Such structure minimizes the volume of each bearing that the joint place between the first outward edge 53 and the air side first inner peripheral surface 42b of correspondence is formed.Therefore, the air-flow produced by the rotation of impeller 12 is allowed to smoothly pass near corresponding joint.Therefore, the noise produced by the air-flow clashing into joint is reduced.
In addition, because the volume of each bearing is minimized, ensure that the space be arranged in by impeller 12 in housing 18, thus achieve the increase of throughput and air-flow static pressure.
The volume of each bearing minimized makes it possible to reduce the amount of resin (when aluminium die casting, the amount for aluminium, aluminum alloy etc.) formed needed for housing 18.Therefore, the reduction of the cost of material of axial fan 11 is achieved.
The air inlet through hollow shaft side end of the first outward edge 53 is preferably connected to the minimum part 42c (more specifically, the axial air-out side end of the second inner peripheral surface 45) of internal diameter on the inner peripheral surface 42b of air side first.Therefore, ensure that the intensity of the joint between each first stator vane 13A and inner peripheral surface 40 and the internal diameter of the second inner peripheral surface 45.It should be noted that, each first stator vane 13A all can be connected to both corresponding air side first inner peripheral surface 42b and the second inner peripheral surface 45, comprises the border between both.In addition, the second edge 26 of the first stator vane 13 is formed as flushing with the axial air-out side end 15a of housing 15, thus prevents the size of housing 15 from increasing.
Below describe according to the axial fan 11A to the first preferred variant that the first preferred implementation of the present invention is made.Fig. 5 is the sectional view of axial fan 11A.The parts of the axial fan 11A identical with the parts of axial fan 11 represent with similar reference character, and by the descriptions thereof are omitted.
As shown in Figure 5, axial fan 11A preferably includes the multiple first stator vane 13B being connected to corresponding first inner peripheral surface 42.Be similar to the first stator vane 13A, the first stator vane 13B is preferably arranged between base portion 16 and inner peripheral surface 40, is arranged to separate equally spacedly each other in the circumferential.
Recess 52A is formed in the axial air side of the radial outer end of each first stator vane 13B.Recess 52A be preferably by the first outward edge 53, second outward edge 531 and air side first inner peripheral surface 42b around space, wherein the first outward edge 53 is parallel or substantially parallel with central axis 23, and the second outward edge 531 is vertical or be approximately perpendicular to the first outward edge 53.On the other hand, the radial outer end of each first stator vane 13B preferably axially inlet side be connected to corresponding air side first inner peripheral surface 42b.According to such structure, the volume of the bearing that the joint place between the first stator vane 13B and inner peripheral surface 40 is formed is minimized.Therefore, reduce the noise produced by the air-flow clashing into corresponding joint, and prevent throughput and air-flow static pressure to reduce.
Each first stator vane 13B preferably includes axial air-out side end 13a, and it flushes with the axial air-out side end 15a of housing 15.According to such structure, the axial dimension of axial fan 11A is limited, to realize the reduction of the size of axial fan 11A.
Each first stator vane 13B preferably includes air inlet through hollow shaft side end 13b, and it flushes with the diameter least part (border between the second inner peripheral surface 45 and corresponding air side first inner peripheral surface 42b) on the inner peripheral surface 42b of air side first.According to such structure, ensure that the enough spaces for being arranged on by impeller 12 in housing 18.The air-flow produced by the rotation of impeller 12 is directed to stator vane 13 smoothly, and reduces the noise produced by the air-flow of shock first stator vane 13B.It should be noted that, the radial outer end of each first stator vane 13B can be connected to the second inner peripheral surface 45 and corresponding both the first inner peripheral surfaces 42, comprises the border between both.
First outward edge 53 and the second outward edge 531 can form the angle equaling 90 degree, but can form acute angle or obtuse angle.Further alternatively, this angle of corresponding first stator vane 13B can be different from each other.
Fig. 6 is the sectional view of the axial fan 11B of the second preferred variant according to the first preferred embodiment of the present invention.The parts of the axial fan 11B identical with the parts of axial fan 11 or 11A are represented by identical reference character, and will the descriptions thereof are omitted.
As shown in Figure 6, axial fan 11B preferably includes the multiple first stator vane 13C being connected to corresponding air side first inner peripheral surface 42b.The radial outer end of each first stator vane 13C preferably axially inlet side be connected to corresponding air side first inner peripheral surface 42b.On the other hand, recess 52B is formed at the radial outer end place in axial air side of the first stator vane 13C.
As shown in Figure 6, the border 54 preferably chamfering between the first outward edge 53 and axial air-out side end 13a.Similarly, border 541 chamfering between the first outward edge 53 and the second outward edge 531.Such structure reduces the volume of the bearing that the boundary between the first stator vane 13C and the air side first inner peripheral surface 42b of correspondence is formed as much as possible.Therefore, air-flow is allowed to smoothly pass near the border 54 and border 541 of each first stator vane 13C.Alternatively, border 54 or 541 can be formed as C font surface.
First outward edge 53 can be positioned on radially inner side or the radial outside of the second inner peripheral surface 45.Border 54 or 541 can be chamfered to be has configurations differing from one in each recess 52B or each first stator vane 13C.
Fig. 7 is the sectional view of the axial fan 11C according to the second preferred implementation of the present invention.The parts of the axial fan 11C substantially the same with the parts of axial fan 11,11A or 11B are represented by identical reference character, and by the descriptions thereof are omitted.
As shown in Figure 7, axial fan 11C preferably includes multiple first stator vane 13D, and described multiple first stator vane 13D is at inner peripheral surface 42b place, air side first, at the second inner peripheral surface 45 place or the housing 15 being connected to housing 16 at both air side first inner peripheral surface 42b and the second inner peripheral surface 45 place.On the other hand, recess 52C is provided with at the first stator vane 13D at the radial outer end place of axial air side.Recess 52C is preferably arranged to: when observing recess 52C in the axial direction, and recess 52C is overlapping with corresponding air side first inner peripheral surface 42b and the first stator vane 13D.
As shown in Figure 7, recess 52C be preferably by the first outward edge 53C, the second outward edge 531C and air side first inner peripheral surface 42b around space, wherein the first outward edge 53C and central axis 23 roughly angled, the second outward edge 531C is vertical or be approximately perpendicular to central axis 23.On the other hand, the radially end of each first stator vane 13D is preferably connected to housing 15 at inner peripheral surface 42b place, air side first, at the second inner peripheral surface 45 place or at both air side first inner peripheral surface 42b and the second inner peripheral surface 45 place.According to such structure, the volume of the bearing that the joint place between the first stator vane 13D and inner peripheral surface 40 limits is minimized.Therefore, prevent the noise produced by the air-flow clashing into corresponding joint, and also prevent the reduction of throughput and air-flow static pressure.
Each first stator vane 13D preferably includes the axial air-out side end 13a of the 3rd outward edge 26C, and axial air-out side end 13a flushes with the axial air-out side end 15a of housing 15 or substantially flush.3rd outward edge 26C is vertical or be approximately perpendicular to central axis.According to such structure, the axial dimension of axial fan 11C is reduced, to realize the reduction of the size of axial fan 11C.
Each first stator vane 13D preferably includes axially edge 25C angled relative to central axis 23.Axially the radially part of edge 25C is inclined upwardly relative to axial direction.In addition, multiple rotor blade 22C of impeller 12 preferably include axial lower limb 12C angled relative to central axis 23.The radially part of axial lower limb 12C is inclined upwardly relative to axial direction.According to such structure, ensure that the enough spaces in order to be arranged on by impeller 12 in housing 18.The air-flow produced by the rotation of impeller 12 is directed to the first stator vane 13D smoothly, and prevents or minimize the noise produced by the air-flow of shock first stator vane 13D.
First outward edge 53C is preferably positioned to more outside diametrically than the radially edge of the rotor blade 22C of impeller 12.Should also be noted that expectation, the first outward edge 53C of a first stator vane 13D can be arranged to have the shape different from other first stator vane 13D.
First outward edge 53C and the second outward edge 531C is preferably formed as obtuse angle.But expect, this angle also can become the angle or acute angle that equal about 90 degree.Further alternatively, each first stator vane 13D can have angle different from each other.
Each first stator vane 13D also preferably includes the first inward flange 54C and the second inward flange 532C.First inward flange 54C is roughly angled relative to central axis 23, and the second inward flange 532C is preferably vertical or be approximately perpendicular to central axis 23.First inward flange 54C and the second inward flange 532C is arranged to preferably be formed as obtuse angle.But expect, this angle also can become the angle or acute angle that equal about 90 degree.First inward flange 54C and the second inward flange 532C are arranged to limit the second recess 521C together with the outer circumferential face 161 of base portion 16.Therefore, prevent the noise produced by the air-flow clashing into corresponding joint, and also prevent the reduction of throughput and air-flow static pressure.
Fig. 8 is the sectional view of the axial fan 11D according to the 3rd preferred implementation of the present invention.The parts of the axial fan 11D substantially the same with the parts of axial fan 11,11A, 11B or 11C are represented by identical reference character, and by the descriptions thereof are omitted.
As shown in Figure 8, axial fan 11D preferably includes the multiple stator vane 13E being connected to corresponding air side first inner peripheral surface 42D.Each stator vane 13E radially hold preferably at inner peripheral surface 42b place, air side first, at the second inner peripheral surface 45 place or the housing 15 being connected to housing 16 at both air side first inner peripheral surface 42b and the second inner peripheral surface 45 place.On the other hand, recess 52D is provided with at stator vane 13E at the radial outer end place of axial air side.
As shown in Figure 8, the surface of the first outward edge 53D is preferably curved surface or convex surface, and is arranged to be connected with the second outward edge 531D that is vertical relative to central axis 23 or that generally perpendicularly extend.Such structure reduces the volume of the bearing that the boundary between stator vane 13E and the air side first inner peripheral surface 42D of correspondence limits as much as possible.In addition, air side first inner peripheral surface 42D is also preferably curved surface or convex surface.Therefore, air-flow is allowed to smoothly pass near recess 52D.
Each stator vane 13E all preferably includes axially edge 25D angled relative to central axis 23.Axially the radially part of edge 25D is inclined upwardly relative to axial direction.In addition, multiple rotor blade 22D of impeller 12 preferably include axial lower limb 12D angled relative to central axis 23.The radially part of axial lower limb 12D is inclined upwardly relative to axial direction.According to such structure, ensure that the enough spaces in order to be arranged on by impeller 12 in housing 18.The air-flow produced by the rotation of impeller 12 is directed to stator vane 13E smoothly, and prevents and minimize the noise produced by the air-flow clashing into stator vane 13E.
First outward edge 53D is preferably positioned to more outside diametrically than the radially edge of the rotor blade 22D of impeller 12.Should also be noted that expectation, the first outward edge 53D of a stator vane 13E can be arranged to have the shape different from other stator vane 13E.
Each stator vane 13E also preferably includes the first inward flange 54D and the second inward flange 532D.First inward flange 54D is preferably curved surface or convex surface, and is arranged to be connected with the second inward flange 532D, and the second inward flange 532D is preferably vertical relative to central axis 23 or substantially vertical.First inward flange 54D and the second inward flange 532D are arranged to limit the second recess 521D together with the outer circumferential face 162 of base portion 16.In addition, the outer circumferential face 162 of base portion 16 is also preferably curved surface or convex surface.Therefore, prevent the noise produced by the air-flow clashing into corresponding joint, and also prevent the reduction of throughput and air-flow static pressure.
Alternatively, air inlet through hollow shaft side (i.e. intake grill 43 place) can be arranged on according to first stator vane 13A, 13B, 13C, 13D and 13E of various preferred implementation of the present invention.Axial fan can comprise more than one the stator vane of first stator vane 13A, 13B, 13C, 13D and the 13E be selected from according to various preferred implementation of the present invention.In addition, the radial outer end of each first stator vane 13A, 13B, 13C, 13D and 13E can be connected to the part except inner peripheral surface 42b and 42D of air side first.Even if under these circumstances, also allow air-flow to smoothly pass near corresponding stator vane.
Inlet side first inner peripheral surface 42a can have the variform shape with air side first inner peripheral surface 42b and 42D.In addition, corresponding inlet side first inner peripheral surface 42a (or corresponding air side first inner peripheral surface 42b and 42D) can have in each bight place configurations differing from one, and can be different from each other with the distance of central axis 23.
Although be hereinbefore described the preferred embodiment of the present invention and preferred modification, the invention is not restricted to above-mentioned situation.Should be appreciated that without departing from the scope and spirit of the present invention, variants and modifications will be apparent for those skilled in the art.Therefore, scope of the present invention will only be determined by claim.
Claims (23)
1. an axial fan, this axial fan comprises:
Impeller, described impeller comprises multiple rotor blade and can rotate around central axis;
Motor part, described motor part is arranged to drive described impeller rotatably;
Base portion, described base portion is arranged to support described motor part;
Housing, described housing comprises intake grill, exhaust outlet and the inner peripheral surface around described impeller and described motor part; And
Multiple stator vane, described multiple stator vane is arranged to be connected with described housing by described base portion respectively; Wherein:
Described inner peripheral surface comprises the first inner peripheral surface, and described first inner peripheral surface is arranged to the distance between described central axis and described first inner peripheral surface is increased towards described intake grill and described exhaust outlet in the axial direction;
In described multiple stator vane, the first stator vane is arranged to be connected with described first inner peripheral surface by described base portion respectively, and described first stator vane comprises the first outward edge, the second outward edge and the 3rd outward edge;
Described first outward edge is arranged to towards described first inner peripheral surface, and accompanies recess between described first outward edge and described first inner peripheral surface, and described first outward edge tilts relative to described central axis;
Described second outward edge is connected with described first outward edge with described 3rd outward edge, and the two is all perpendicular to described central axis;
Described first outward edge and described second outer peripheral tie point are arranged to the radial outside of the outermost edge at described impeller; And
Described first outward edge and described second outward edge are formed as obtuse angle.
2. axial fan according to claim 1, the axially edge of wherein said first stator vane and the axial lower limb of described multiple rotor blade are arranged to relative to angled with the direction of described central axis upright.
3. axial fan according to claim 1, the radially part of the axial lower limb of radially part and described multiple rotor blade at the axially edge of wherein said first stator vane is arranged to be inclined upwardly relative to described axis.
4. axial fan according to claim 1, the described inner peripheral surface of wherein said housing comprises the second inner peripheral surface be arranged to described centerline axis parallel.
5. axial fan according to claim 4, in the middle of the distance wherein between described inner peripheral surface and described central axis, the distance between described second inner peripheral surface and described central axis is the shortest.
6. axial fan according to claim 1, wherein said tie point is disposed in the radially inner side of described first inner peripheral surface.
7. axial fan according to claim 1, wherein said housing, described base portion and described multiple stator vane are integrally formed as single part.
8. axial fan according to claim 1, wherein said housing comprises housing, and described multiple stator vane includes the axial air-out side end flushed with the axial air-out side end of described housing.
9. axial fan according to claim 1, wherein said first outward edge and described second outward edge continuous each other.
10. axial fan according to claim 1, wherein said first outward edge and described 3rd outward edge are formed as obtuse angle.
11. axial fans according to claim 1, wherein said first stator vane also comprises the first inward flange and the second inward flange;
Described first inward flange is arranged to the outer circumferential face towards described base portion, and accompanies additional recess between described first inward flange and described outer circumferential face;
Described second inward flange is connected with described first inward flange with described 3rd outward edge, and the two is all perpendicular to described central axis; And
Described first inward flange and described second inward flange are formed as obtuse angle.
12. axial fans according to claim 1, wherein said first outward edge comprises curved surface.
13. axial fans according to claim 12, wherein said first inner peripheral surface comprises curved surface, and described curved surface is arranged to directly relative with described first outer peripheral described curved surface.
14. 1 kinds of axial fans, this axial fan comprises:
Impeller, described impeller comprises multiple rotor blade and can rotate around central axis;
Motor part, described motor part is arranged to drive described impeller rotatably;
Base portion, described base portion is arranged to support described motor part;
Housing, described housing comprises intake grill, exhaust outlet and the inner peripheral surface around described impeller and described motor part; And
Multiple stator vane, described multiple stator vane is arranged to be connected with described housing by described base portion respectively; Wherein
Described inner peripheral surface comprises the first inner peripheral surface, and described first inner peripheral surface is arranged to the distance between described central axis and described first inner peripheral surface is increased towards described intake grill and described exhaust outlet in the axial direction;
In described multiple stator vane, the first stator vane is arranged to be connected with described first inner peripheral surface by described base portion respectively, and described first stator vane comprises the first outward edge, the second outward edge and the 3rd outward edge;
Described first outward edge is arranged to towards described first inner peripheral surface, and accompanies recess between described first outward edge and described first inner peripheral surface;
Described second outward edge is connected with described first outward edge with described 3rd outward edge, and the two is all perpendicular to described central axis;
Described first outward edge and described second outer peripheral tie point are arranged to the radial outside of the outermost edge at described impeller; And
Described first outward edge comprises curved surface.
15. axial fans according to claim 14, the axially edge of wherein said first stator vane and the axial lower limb of described multiple rotor blade are arranged to relative to angled with the direction of described central axis upright.
16. axial fans according to claim 14, the described inner peripheral surface of wherein said housing comprises the second inner peripheral surface be arranged to described centerline axis parallel.
17. axial fans according to claim 16, in the middle of the distance wherein between described inner peripheral surface and described central axis, the distance between described second inner peripheral surface and described central axis is the shortest.
18. axial fans according to claim 14, wherein said tie point is disposed in the radially inner side of described first inner peripheral surface.
19. axial fans according to claim 14, wherein said housing, described base portion and described multiple stator vane are limited by single integrated support structure.
20. axial fans according to claim 14, wherein said housing comprises housing, and described multiple stator vane includes the axial air-out side end flushed with the axial air-out side end of described housing.
21. axial fans according to claim 14, wherein said first outward edge and described second outward edge continuous each other.
22. axial fans according to claim 14, wherein said first stator vane also comprises the first inward flange and the second inward flange;
Described first inward flange is arranged to the outer circumferential face towards described base portion, and accompanies additional recess between described first inward flange and described outer circumferential face;
Described second inward flange is connected with described first inward flange with described 3rd outward edge, and the two is all perpendicular to described central axis; And
Described first inward flange and described second inward flange are formed as obtuse angle.
23. axial fans according to claim 14, wherein said first inner peripheral surface comprises curved surface, and described curved surface is arranged to directly relative with described first outer peripheral described curved surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/338,563 US8485781B2 (en) | 2007-10-31 | 2011-12-28 | Axial flow fan |
| US13/338,563 | 2011-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103185013A CN103185013A (en) | 2013-07-03 |
| CN103185013B true CN103185013B (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220042037 Expired - Lifetime CN202612138U (en) | 2011-12-28 | 2012-02-09 | Axial fan |
| CN201210028863.0A Active CN103185013B (en) | 2011-12-28 | 2012-02-09 | Axial fan |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220042037 Expired - Lifetime CN202612138U (en) | 2011-12-28 | 2012-02-09 | Axial fan |
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| CN (2) | CN202612138U (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202612138U (en) * | 2011-12-28 | 2012-12-19 | 日本电产株式会社 | Axial fan |
| WO2016006217A1 (en) * | 2014-07-08 | 2016-01-14 | ダイキン工業株式会社 | Propeller fan and blower unit |
| CN105951406A (en) * | 2016-05-31 | 2016-09-21 | 无锡小天鹅股份有限公司 | Portable clothes drying rack |
| CN109114042A (en) * | 2017-06-26 | 2019-01-01 | 台达电子工业股份有限公司 | Structure of fan frame |
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| CN1426511A (en) * | 2000-04-28 | 2003-06-25 | 韦拉克斯通风设备有限公司 | Blower especially for ventilating electronic devices |
| CN1975180A (en) * | 2005-11-30 | 2007-06-06 | 山洋电气株式会社 | Axial-flow fan |
| CN101086264A (en) * | 2006-06-09 | 2007-12-12 | 日本电产株式会社 | Axial flow fan |
| CN202612138U (en) * | 2011-12-28 | 2012-12-19 | 日本电产株式会社 | Axial fan |
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| JP2000054984A (en) * | 1998-08-11 | 2000-02-22 | Japan Servo Co Ltd | Axial fan |
| JP2000179490A (en) * | 1998-12-17 | 2000-06-27 | Toshiba Home Technology Corp | Axial flow fan |
| US7275910B2 (en) * | 2003-06-27 | 2007-10-02 | Asia Vital Components Co., Ltd. | Outlet airflow direction control unit |
| TWI305612B (en) * | 2004-08-27 | 2009-01-21 | Delta Electronics Inc | Heat-dissipating fan |
| TWI305486B (en) * | 2004-08-27 | 2009-01-11 | Delta Electronics Inc | Heat-dissipating fan and its housing |
| TWI273175B (en) * | 2004-08-27 | 2007-02-11 | Delta Electronics Inc | Fan |
| JP2009108792A (en) * | 2007-10-31 | 2009-05-21 | Nippon Densan Corp | Fan device |
| US8109713B2 (en) * | 2009-03-24 | 2012-02-07 | Sunonwealth Electric Machine Industry Co., Ltd. | Heat-dissipating fan |
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- 2012-02-09 CN CN 201220042037 patent/CN202612138U/en not_active Expired - Lifetime
- 2012-02-09 CN CN201210028863.0A patent/CN103185013B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1426511A (en) * | 2000-04-28 | 2003-06-25 | 韦拉克斯通风设备有限公司 | Blower especially for ventilating electronic devices |
| CN1975180A (en) * | 2005-11-30 | 2007-06-06 | 山洋电气株式会社 | Axial-flow fan |
| CN101086264A (en) * | 2006-06-09 | 2007-12-12 | 日本电产株式会社 | Axial flow fan |
| CN202612138U (en) * | 2011-12-28 | 2012-12-19 | 日本电产株式会社 | Axial fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103185013A (en) | 2013-07-03 |
| CN202612138U (en) | 2012-12-19 |
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