CN202612138U - Axial fan - Google Patents
Axial fan Download PDFInfo
- Publication number
- CN202612138U CN202612138U CN 201220042037 CN201220042037U CN202612138U CN 202612138 U CN202612138 U CN 202612138U CN 201220042037 CN201220042037 CN 201220042037 CN 201220042037 U CN201220042037 U CN 201220042037U CN 202612138 U CN202612138 U CN 202612138U
- Authority
- CN
- China
- Prior art keywords
- inner peripheral
- peripheral surface
- outward edge
- axial fan
- central axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model provides an axial fan which comprises an impeller, a motor, a base portion, a shell body and a plurality of stator blades, wherein the impeller is provided with a plurality of rotor blades and can rotate around the central axis of the impeller; the motor drives the impeller; the base portion supports the motor; the shell body comprises an air inlet, an air outlet and an inner circumferential face surrounding the impeller and the motor; and the stator blades are respectively connected with the base portion and the shell body. The inner circumferential face comprises a first inner circumferential face and a concave portion. Due the arrangement of the first inner circumferential face, the distance between the first inner circumferential face and the central axis gradually axially increases towards the air inlet or the air outlet. The concave portion is arranged between the first inner circumferential face and a stator blade included by the plurality of stator blades, and faces the first inner circumferential face. Therefore, air flows are allowed to smoothly pass through the shell body, and accordingly noise produced in the fan is reduced.
Description
Technical field
The utility model 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, a plurality of stator vane 102 and pedestal 103.Housing 101 is for being provided with the hollow member of intake grill and exhaust outlet.Exhaust outlet place at housing 101 forms diameter-increasing portion 101a, and is provided with stator vane 102 and pedestal 103.Housing 101, stator vane 102 and pedestal 103 are formed by the molding and forming resin.
In injection molding process, form a mould through making up two kinds of mold components (being stationary mould part and movable mold part).The resin of fusion is poured into cooling then in the mould.Subsequently, the resin with cooling and sclerosis takes out mould.Thereby housing 101, stator vane 102 and pedestal 103 form a member.
Be provided with a plurality of bearings 104, these bearings 104 are formed at the position that diameter-increasing portion 101a and stator vane 102 engage respectively.When the direction observation from the taking-up mould had the integrated moulding part of housing 101, stator vane 102 and pedestal 103, bearing 104 was positioned at blind portion.When air is discharged and during bump bearing 104, the problem of noise occurred producing from exhaust outlet, and throughput and air-flow static pressure reduce.
The model utility content
The various preferred implementations of the utility model provide a kind of axial fan, and it comprises: impeller, this impeller comprise a plurality of rotor blades and can rotate around central axis; Motor, this motor is with the rotation mode drives impeller; Base portion, this base portion supports motor; Housing, this housing comprise intake grill, exhaust outlet and center on the inner peripheral surface of impeller and motor; And a plurality of stator vanes; These a plurality of stator vanes are connected base portion respectively with housing; Wherein inner peripheral surface comprises 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 first inner peripheral surface and a plurality of stator vane and towards first inner peripheral surface.
An aspect of the utility model provides a kind of axial fan, and this axial fan comprises: impeller, said impeller comprise a plurality of rotor blades and can rotate around central axis; Motor part, said motor part are arranged to drive rotatably said impeller; Base portion, said base portion is arranged to support said motor part; Housing, said housing comprise intake grill, exhaust outlet and the inner peripheral surface that centers on said impeller and said motor part; And a plurality of stator vanes, said a plurality of stator vanes are arranged to respectively said base portion is connected with said housing; Wherein: said inner peripheral surface comprises first inner peripheral surface, and said first inner peripheral surface is arranged to make the distance between said central axis and said first inner peripheral surface to increase towards said intake grill and said exhaust outlet in the axial direction; In said a plurality of stator vanes, first stator vane is arranged to respectively said base portion is connected with said first inner peripheral surface, and said first stator vane comprises first outward edge, second outward edge and the 3rd outward edge; Said first outward edge is arranged to towards said first inner peripheral surface, and between said first outward edge and said first inner peripheral surface, accompanies recess; Said second outward edge links to each other with said first outward edge with said the 3rd outward edge, and the two is all perpendicular to said central axis; Said first outward edge and the said second outer peripheral tie point are arranged to the radial outside in the outermost edge of said impeller; And said first outward edge and said second outward edge form the obtuse angle.
The axial top edge of said first stator vane and the axial lower limb of said a plurality of rotor blades are arranged to angled with respect to the direction vertical with said central axis.
The radially outermost portion of the radially outermost portion of the axial top edge of said first stator vane and the axial lower limb of said a plurality of rotor blades is arranged to axially be inclined upwardly with respect to said.
The said inner peripheral surface of said housing comprises and is arranged to second inner peripheral surface parallel with said central axis.
In the middle of the distance between said inner peripheral surface and the said central axis, the distance between said second inner peripheral surface and the said central axis is the shortest.
Said tie point is disposed in the radially inner side of said first inner peripheral surface or said second inner peripheral surface.
Said housing, said base portion and said a plurality of stator vane are integrally formed as single part.
Said housing comprises housing, and said a plurality of stator vanes include the end, axial air side that flushes with the end, axial air side of said housing.
Said first outward edge and said second outward edge are continuous each other.
Said first outward edge and said the 3rd outward edge form the obtuse angle.
Said first stator vane also comprises first inward flange and second inward flange; Said first inward flange is arranged to the outer circumferential face towards said base portion, and between said first inward flange and said outer circumferential face, accompanies additional recess; Said second inward flange links to each other with said first inward flange with said the 3rd outward edge, and the two is all perpendicular to said central axis; And said first inward flange and said second inward flange form the obtuse angle.
Said first outward edge comprises curved surface.
Said first inner peripheral surface comprises curved surface, and it is directly relative with the said first outer peripheral said curved surface that said curved surface is arranged to.
The utility model a kind of axial fan also is provided on the other hand, this axial fan comprises: impeller, said impeller comprise a plurality of rotor blades and can rotate around central axis; Motor part, said motor part are arranged to drive rotatably said impeller; Base portion, said base portion is arranged to support said motor part; Housing, said housing comprise intake grill, exhaust outlet and the inner peripheral surface that centers on said impeller and said motor part; And a plurality of stator vanes, said a plurality of stator vanes are arranged to respectively said base portion is connected with said housing; Wherein said inner peripheral surface comprises first inner peripheral surface, and said first inner peripheral surface is arranged to make the distance between said central axis and said first inner peripheral surface to increase towards said intake grill and said exhaust outlet in the axial direction; In said a plurality of stator vanes, first stator vane is arranged to respectively said base portion is connected with said first inner peripheral surface, and said first stator vane comprises first outward edge, second outward edge and the 3rd outward edge; Said first outward edge is arranged to towards said first inner peripheral surface, and between said first outward edge and said first inner peripheral surface, accompanies recess; Said second outward edge links to each other with said first outward edge with said the 3rd outward edge, and the two is all perpendicular to said central axis; Said first outward edge and the said second outer peripheral tie point are arranged to the radial outside in the outermost edge of said impeller; And said first outward edge comprises curved surface.
The axial top edge of said first stator vane and the axial lower limb of said a plurality of rotor blades are arranged to angled with respect to the direction vertical with said central axis.
The said inner peripheral surface of said housing comprises and is arranged to second inner peripheral surface parallel with said central axis.
In the middle of the distance between said inner peripheral surface and the said central axis, the distance between said second inner peripheral surface and the said central axis is the shortest.
Said tie point is disposed in the radially inner side of said first inner peripheral surface or said second inner peripheral surface.
Said housing, said base portion and said a plurality of stator vane are limited single integrated support structure.
Said housing comprises housing, and said a plurality of stator vanes include the end, axial air side that flushes with the end, axial air side of said housing.
Said first outward edge and said second outward edge are continuous each other.
Said first stator vane also comprises first inward flange and second inward flange; Said first inward flange is arranged to the outer circumferential face towards said base portion, and between said first inward flange and said outer circumferential face, accompanies additional recess; Said second inward flange links to each other with said first inward flange with said the 3rd outward edge, and the two is all perpendicular to said central axis; And said first inward flange and said second inward flange form the obtuse angle.
Said first inner peripheral surface comprises curved surface, and it is directly relative with the said first outer peripheral said curved surface that said curved surface is arranged to.
According to above-mentioned structure, allow gas flow smooth ground through housing, the noise that causes producing in the axial fan reduces.In addition, can prevent to suck or discharge the throughput of axial fan and reducing of air-flow static pressure.In addition, the resin molded housing of available less amount, thereby the remarkable reduction of realization axial fan manufacture cost.
With reference to accompanying drawing,, will more know the above of the utility model and other characteristics, parts, advantage and characteristic from the following detailed description of the preferred implementation of the utility model.
Description of drawings
Fig. 1 is the stereogram of conventional axial fan.
Fig. 2 is the stereogram according to the axial fan of first preferred implementation of the utility model.
Fig. 3 is the planimetric map of the axial fan shown in Fig. 2 when its air side is observed.
Fig. 4 is the sectional view of axial fan shown in Fig. 2.
Fig. 5 is the sectional view according to the axial fan of first preferred variant of the utility model.
Fig. 6 is the sectional view according to the axial fan of second preferred variant of the utility model.
Fig. 7 is the sectional view according to the axial fan of second preferred implementation of the utility model.
Fig. 8 is the sectional view according to the axial fan of the 3rd preferred implementation of the utility model.
Embodiment
With reference to Fig. 2 to Fig. 8, with the preferred implementation of describing the utility model in detail.Should be noted that, in the explanation of the preferred implementation of the utility model, when the relation of the position between the different parts with orientation is described to/descend or during a left side/right side, be meant that final position in the accompanying drawing concerns and is orientated; Rather than refer in the position relation and the orientation that are assembled between the actual device back part.Simultaneously, in the following description, axially be meant parallel or be roughly parallel to the direction of spin axis, and radially be meant vertical or be approximately perpendicular to the direction of spin axis.
Fig. 2, Fig. 3 and Fig. 4 are respectively stereogram, planimetric map and the sectional views according to first preferred implementation of the axial fan 11 of the utility model.
Shown in Fig. 2, Fig. 3 and Fig. 4, axial fan 11 preferably includes impeller 12, a plurality of stator vane 13, motor part 14 and housing 18.Impeller 12 is preferably driven around central axis 23 rotations by motor part 14.Housing 18 is preferably the hollow member that is provided with exhaust outlet 41 and intake grill 43.Stator vane 13 preferably is arranged on exhaust outlet 41 places, and utilizes molding and forming resin and housing 18 to form.Alternatively, stator vane 13 can be integrally formed as single part through aluminium die casting with housing 18.
What as shown in Figure 4, impeller 12 preferably included tubular roughly has top cup 21 and a plurality of rotor blades 22.Rotor blade 22 preferably is arranged to upwards separate equally spacedly each other in week around central axis 23 on the outer circumferential face of the cylindrical wall of cup 21.Preferably, the internal fixation at cup 21 has rotor holder 121.Rotor holder 121 is preferably the roughly tubular spare of being processed by magnetic material (for example metallic material) that the top is arranged.Rotor holder 121 preferably includes the tubular inner peripheral surface, and roughly the rotor magnet 31 of ring-type is fixed to this surface.Be fixed with the roughly axle 123 of column having on the top part of rotor holder 121 through modes such as press fits.
As shown in Figure 4, motor part 14 preferably is arranged in the impeller 12 and comprises stator 141 (partly illustrating) and circuit board (not shown).Stator 141 preferably sagittal plane to rotor magnet 31 and be electrically connected to circuit board.Circuit board and stator 141 preferably receive the electric current and the control signal of sending from the external power supply (not shown) through many lead-in wire (not shown).When stator 141 is provided with electric current, produce magnetic field at stator 141 places.Interaction between the magnetic field that stator 141 places produce and the magnetic field of rotor magnet 31 causes moment of torsion between stator 141 and rotor magnet 31.Such moment of torsion preferably rotates drives impeller 12 to cause along the air-flow of central axis 23 around central axis 23.Should be noted that in Fig. 4, air axially descends side flow from axially going up side direction, promptly flows to exhaust outlet 41 from intake grill 43.
Shown in Fig. 2, Fig. 3 and Fig. 4, housing 18 has housing 15 and base portion 16.Housing 15 is preferably the roughly hollow member of square cylindrical shape.In planimetric map, housing 15 preferably includes the profile of essentially rectangular or circular, and comprises the inner peripheral surface 40 of circular.
Inner peripheral surface 40 preferably includes respectively at place, four angles or along the inlet side first inner peripheral surface 42a of week zone setting in intake grill 43 whole.The inlet side first inner peripheral surface 42a preferably forms the radial distance that makes between central axis 23 and the inner peripheral surface 40 and increases gradually towards intake grill 43 in the axial direction.Similarly; Inner peripheral surface 40 preferably includes the air side first inner peripheral surface 42b; The air side first inner peripheral surface 42b be separately positioned on four jiaos of places or along in exhaust outlet 41 whole week the zone be provided with, be arranged to make the radial distance between central axis 23 and the inner peripheral surface 40 to increase gradually towards exhaust outlet 41 in the axial direction.
As shown in Figure 4, inner peripheral surface 40 preferably includes second inner peripheral surface 45 that forms with central axis 23 almost parallel ground.Second inner peripheral surface 45 is preferably continuous smoothly each other with corresponding first inner peripheral surface 42.
What base portion 16 was preferably column roughly has end member and an axially support motor part 14.Base portion 16 preferably is arranged in the housing 15 at intake grill 43 places in the axial direction.Base portion 16 preferably includes surface, axial air side, and this surface flushes with respect to the axial air side end 15a of housing 15.
Shown in Fig. 2, Fig. 3 and Fig. 4, stator vane 13 preferably is arranged between the outer circumferential face of inner peripheral surface 40 and base portion 16 of housing 15, is arranged in upwards to separate equally spacedly each other in week, thereby serves as the connector between inner peripheral surface 40 and the base portion 16.Stator vane 13 all preferably includes first edge 25, second edge 26, first surface 27 and second surface 28.First surface 27 preferably tilts with respect to central axis 23 with second surface 28, and first edge 25 is presented axially in the inlet side, and second edge 26 then is positioned at the air side.First edge 25 preferably forms the opposition side that on the sense of rotation R of impeller 12, is positioned at second edge 26.It is opposite with the sense of rotation R of impeller 12 that first surface 27 preferably is oriented to, so that the main air-flow that receives by the rotation generation of impeller 12.Should be noted that impeller 12 turns clockwise on sense of rotation R around central axis 23, as shown in Figure 2.In addition, stator vane 13 all preferably includes the axial cross section that is the blade shape with curved surface.According to this structure, the air circulation component that is produced by the rotation of impeller 12 is converted into the component that flows along central axis 23, thereby makes static air pressure increase.
Alternatively, first surface 27 and second surface 28 can manufacture with respect to the central axis 23 different angle that tilts, so that air-flow is directed to any direction, and radially outward direction for example.Stator vane 13 can not be arranged on exhaust outlet 41 places in the axial direction, and is arranged on intake grill 43 places.In this case, second edge 26 is positioned at the opposition side at first edge 25 on the sense of rotation R of impeller 12.Air is directed and be inhaled in the housing 18 by stator vane 13.Therefore, reduced by the noise generated by air flow of clashing into inner peripheral surface 40 grades.
Shown in Fig. 2, Fig. 3 and Fig. 4, a plurality of stator vanes 13 preferably include a plurality of first stator vane 13A, and each first stator vane 13A all extends to the air side of the correspondence first inner peripheral surface 42b from central axis 23.Position in that first outward edge 53 of each first stator vane 13A is connected with the air side first inner peripheral surface 42b forms recess 52.Recess 52 be preferably by first outward edge 53 and the corresponding air side first inner peripheral surface 42b around the space.In other words, the end, axial air side of first outward edge 53 is radially towards the air side first inner peripheral surface 42b of correspondence, and accompanies recess 52 between the two.On the other hand, the air inlet through hollow shaft side end of first outward edge 53 is connected to second inner peripheral surface 45.
Such structure has minimized the volume of each bearing of the joint place formation between the air side first inner peripheral surface 42b of first outward edge 53 and correspondence.Therefore, permission is being passed through near corresponding joint by the air-flow of the rotation generation of impeller 12 smoothly.Therefore, reduced by the noise generated by air flow of clashing into joint.
In addition, because the volume of each bearing is minimized, guaranteed impeller 12 is arranged in the space in the housing 18, thereby realized the increase of throughput and air-flow static pressure.
The volume of minimized each bearing makes it possible to reduce and forms the required amount of resin (in the situation of aluminium die casting, being the amount of aluminium, aluminum alloy etc.) of housing 18.Therefore, realized the reduction of the cost of material of axial fan 11.
The air inlet through hollow shaft side end of first outward edge 53 preferably is connected to the minimum part 42c (more specifically, the end, axial air side of second inner peripheral surface 45) of internal diameter on the first inner peripheral surface 42b of air side.Therefore, the intensity of the joint between each first stator vane 13A and the inner peripheral surface 40 and the internal diameter of second inner peripheral surface 45 have been guaranteed.Should be noted that, each first stator vane 13A all can be connected to the corresponding air side first inner peripheral surface 42b and second inner peripheral surface 45 both, comprise the border between the two.In addition, second edge 26 of first stator vane 13 forms with the axial air side end 15a of housing 15 and flushes, thereby the size that prevents housing 15 increases.
As shown in Figure 5, axial fan 11A preferably includes a plurality of first stator vane 13B that are connected to corresponding first inner peripheral surface 42.Be similar to the first stator vane 13A, the first stator vane 13B preferably is arranged between base portion 16 and the inner peripheral surface 40, is arranged in upwards to separate equally spacedly each other in week.
Axial air side at the radial outer end of each first stator vane 13B is formed with recess 52A.Recess 52A is preferably the space that is centered on by first outward edge 53, second outward edge 531 and the air side first inner peripheral surface 42b; Wherein first outward edge 53 and central axis 23 parallel or almost parallels, second outward edge 531 is vertical or be approximately perpendicular to first outward edge 53.On the other hand, the radial outer end of each first stator vane 13B preferably is connected to the corresponding air side first inner peripheral surface 42b in its air inlet through hollow shaft side.According to such structure, the volume of the bearing that the joint place between the first stator vane 13B and inner peripheral surface 40 forms is minimized.Therefore, reduced noise generated by air flow, and prevented that throughput and air-flow static pressure from reducing by the corresponding joint of bump.
Each first stator vane 13B preferably includes axial air side end 13a, and it flushes with the axial air side end 15a of housing 15.According to such structure, the axial dimension of axial fan 11A is limited, with reducing of the size that realizes axial fan 11A.
Each first stator vane 13B preferably includes air inlet through hollow shaft side end 13b, and it flushes with diameter least part (second inner peripheral surface 45 and the border between the first inner peripheral surface 42b of air side) accordingly on the first inner peripheral surface 42b of air side.According to such structure, enough spaces of housing 18 have been guaranteed to be used for impeller 12 is arranged on.The air-flow that is produced by the rotation of impeller 12 is directed to stator vane 13 smoothly, and has reduced the noise generated by air flow by the bump first stator vane 13B.Should be noted that, the radial outer end of each first stator vane 13B can be connected to second inner peripheral surface 45 and corresponding first inner peripheral surface 42 both, comprise the border between the two.
First outward edge 53 and second outward edge 531 can form the angle that equals 90 degree, but can form acute angle or obtuse angle.Further alternatively, this angle of the corresponding first stator vane 13B can differ from one another.
Fig. 6 is the sectional view according to the axial fan 11B of second preferred variant of first preferred implementation of the utility model.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 a plurality of first stator vane 13C that are connected to the corresponding air side first inner peripheral surface 42b.The radial outer end of each first stator vane 13C preferably is connected to the corresponding air side first inner peripheral surface 42b in its air inlet through hollow shaft side.On the other hand, form recess 52B at the radial outer end place of the first stator vane 13C in axial air side.
As shown in Figure 6, first outward edge 53 and the axially preferably chamfering of border 54 between the 13a of end, air side.Similarly, border 541 chamferings between first outward edge 53 and second outward edge 531.Such structure has reduced the volume of the bearing of the boundary formation between the air side first inner peripheral surface 42b of the first stator vane 13C and correspondence as much as possible.Therefore, allow air-flow near the border 54 of each first stator vane 13C and border 541, to pass through smoothly.Alternatively, border 54 or 541 can form C font surface.
First outward edge 53 can be positioned on the radially inner side or the radial outside of second inner peripheral surface 45.Border 54 or 541 can be chamfered to be in each recess 52B or each first stator vane 13C has configurations differing from one.
Fig. 7 is the sectional view according to the axial fan 11C of second preferred implementation of the utility model.Represent by identical reference character with the parts of the substantially the same axial fan 11C of the parts of axial fan 11,11A or 11B, and will the descriptions thereof are omitted.
As shown in Figure 7; Axial fan 11C preferably includes a plurality of first stator vane 13D, said a plurality of first stator vane 13D in the air side the first inner peripheral surface 42b place, the first inner peripheral surface 42b and second inner peripheral surface, 45 the two place are connected to the housing 15 of housing 16 at second inner peripheral surface, 45 places or in the air side.On the other hand, be provided with recess 52C at the radial outer end place of the first stator vane 13D in axial air side.Recess 52C preferably is arranged to: when observing recess 52C in the axial direction, recess 52C is overlapping with corresponding the 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 the air side first inner peripheral surface 42b around the space; Wherein the first outward edge 53C and central axis 23 are roughly angled, and the second outward edge 531C is vertical or be approximately perpendicular to central axis 23.On the other hand, the radially outermost end of each first stator vane 13D preferably in the air side the first inner peripheral surface 42b place, the first inner peripheral surface 42b and second inner peripheral surface, 45 the two place are connected to housing 15 at second inner peripheral surface, 45 places or in the air side.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, prevented noise generated by air flow, and also prevented reducing of throughput and air-flow static pressure by the corresponding joint of bump.
Each first stator vane 13D preferably includes the axial air side end 13a of the 3rd outward edge 26C, and axially end, air side 13a flushes with the axial air side end 15a of housing 15 or be substantially flush.The 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, with reducing of the size that realizes axial fan 11C.
Each first stator vane 13D preferably includes with respect to central axis 23 angled axial top edge 25C.Axially the radially outermost portion of top edge 25C is inclined upwardly with respect to axial direction.In addition, a plurality of rotor blade 22C of impeller 12 preferably include with respect to central axis 23 angled axial lower limb 12C.Axially the radially outermost portion of lower limb 12C is inclined upwardly with respect to axial direction.According to such structure, guaranteed in order to impeller 12 is arranged on the enough spaces in the housing 18.The air-flow that is produced by the rotation of impeller 12 is directed to the first stator vane 13D smoothly, and prevents or minimized the noise generated by air flow by the bump first stator vane 13D.
The first outward edge 53C preferably is positioned to more outside diametrically than the radially outermost edge of the rotor blade 22C of impeller 12.Should also be noted that expectation, the first outward edge 53C of one first stator vane 13D can be arranged to have the different shape with other first stator vane 13D.
The first outward edge 53C and the second outward edge 531C preferably form the obtuse angle.Yet, expectation, this angle also can become angle or the acute angle that equals about 90 degree.Further alternatively, each first stator vane 13D can have the angle that differs from one another.
Each first stator vane 13D also preferably includes the first inward flange 54C and the second inward flange 532C.The first inward flange 54C is roughly angled with respect to central axis 23, and the second inward flange 532C is preferably vertical or be approximately perpendicular to central axis 23.The first inward flange 54C and the second inward flange 532C are arranged to preferably form the obtuse angle.Yet, expectation, this angle also can become angle or the acute angle that equals about 90 degree.The first inward flange 54C and the second inward flange 532C are arranged to limit the second recess 521C with the outer circumferential face 161 of base portion 16.Therefore, prevented noise generated by air flow, and also prevented reducing of throughput and air-flow static pressure by the corresponding joint of bump.
Fig. 8 is the sectional view according to the axial fan 11D of the 3rd preferred implementation of the utility model.Represent by identical reference character with the parts of the substantially the same axial fan 11D of the parts of axial fan 11,11A, 11B or 11C, and will the descriptions thereof are omitted.
As shown in Figure 8, axial fan 11D preferably includes a plurality of stator vane 13E that are connected to the corresponding air side first inner peripheral surface 42D.The radially outermost end of each stator vane 13E preferably in the air side the first inner peripheral surface 42b place, the first inner peripheral surface 42b and second inner peripheral surface, 45 the two place are connected to the housing 15 of housing 16 at second inner peripheral surface, 45 places or in the air side.On the other hand, be provided with recess 52D at the radial outer end place of stator vane 13E in 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 and the second outward edge 531D vertical or that generally perpendicularly extend link to each other with respect to central axis 23.Such structure has reduced the volume of the bearing of the boundary qualification between the air side first inner peripheral surface 42D of stator vane 13E and correspondence as much as possible.In addition, the air side first inner peripheral surface 42D also is preferably curved surface or convex surface.Therefore, allow air-flow near recess 52D, to pass through smoothly.
Each stator vane 13E all preferably includes with respect to central axis 23 angled axial top edge 25D.Axially the radially outermost portion of top edge 25D is inclined upwardly with respect to axial direction.In addition, a plurality of rotor blade 22D of impeller 12 preferably include with respect to central axis 23 angled axial lower limb 12D.Axially the radially outermost portion of lower limb 12D is inclined upwardly with respect to axial direction.According to such structure, guaranteed in order to impeller 12 is arranged on the enough spaces in the housing 18.The air-flow that is produced by the rotation of impeller 12 is directed to stator vane 13E smoothly, and prevents and minimized the noise generated by air flow by bump stator vane 13E.
The first outward edge 53D preferably is positioned to more outside diametrically than the radially outermost 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 different shape with other stator vane 13E.
Each stator vane 13E also preferably includes the first inward flange 54D and the second inward flange 532D.The first inward flange 54D is preferably curved surface or convex surface, and is arranged to link to each other with the second inward flange 532D, and the second inward flange 532D is preferably with respect to central axis 23 vertical or approximate vertical.The first inward flange 54D and the second inward flange 532D are arranged to limit the second recess 521D with the outer circumferential face 162 of base portion 16.In addition, the outer circumferential face 162 of base portion 16 also is preferably curved surface or convex surface.Therefore, prevented noise generated by air flow, and also prevented reducing of throughput and air-flow static pressure by the corresponding joint of bump.
Alternatively, the first stator vane 13A, 13B, 13C, 13D and the 13E according to the various preferred implementations of the utility model can be arranged on air inlet through hollow shaft side (being intake grill 43 places).Axial fan can comprise more than one the stator vane that is selected from according to the first stator vane 13A, 13B, 13C, 13D and the 13E of the various preferred implementations of the utility model.In addition, the radial outer end of each first stator vane 13A, 13B, 13C, 13D and 13E can be connected to the part except air side first inner peripheral surface 42b and 42D.Even under these circumstances, also allow air-flow near corresponding stator vane, to pass through smoothly.
The inlet side first inner peripheral surface 42a can have the variform shape with air side first inner peripheral surface 42b and 42D.In addition, the corresponding inlet side first inner peripheral surface 42a (or corresponding air side first inner peripheral surface 42b and 42D) can have in each corners configurations differing from one, and can differ from one another with the distance of central axis 23.
Though preceding text have been described the preferred implementation and the preferred modification of the utility model, the utility model is not limited to above-mentioned situation.Should be appreciated that under the situation of scope that does not break away from the utility model and spirit variants and modifications will be obvious for those skilled in the art.Therefore, the scope of the utility model will only be confirmed by claim.
Claims (23)
1. axial fan, this axial fan comprises:
Impeller, said impeller comprise a plurality of rotor blades and can rotate around central axis;
Motor part, said motor part are arranged to drive rotatably said impeller;
Base portion, said base portion is arranged to support said motor part;
Housing, said housing comprise intake grill, exhaust outlet and the inner peripheral surface that centers on said impeller and said motor part; And
A plurality of stator vanes, said a plurality of stator vanes are arranged to respectively said base portion is connected with said housing; Wherein:
Said inner peripheral surface comprises first inner peripheral surface, and said first inner peripheral surface is arranged to make the distance between said central axis and said first inner peripheral surface to increase towards said intake grill and said exhaust outlet in the axial direction;
In said a plurality of stator vanes, first stator vane is arranged to respectively said base portion is connected with said first inner peripheral surface, and said first stator vane comprises first outward edge, second outward edge and the 3rd outward edge;
Said first outward edge is arranged to towards said first inner peripheral surface, and between said first outward edge and said first inner peripheral surface, accompanies recess;
Said second outward edge links to each other with said first outward edge with said the 3rd outward edge, and the two is all perpendicular to said central axis;
Said first outward edge and the said second outer peripheral tie point are arranged to the radial outside in the outermost edge of said impeller; And
Said first outward edge and said second outward edge form the obtuse angle.
2. axial fan according to claim 1, the axial top edge of wherein said first stator vane and the axial lower limb of said a plurality of rotor blades are arranged to angled with respect to the direction vertical with said central axis.
3. axial fan according to claim 1, the radially outermost portion of the radially outermost portion of the axial top edge of wherein said first stator vane and the axial lower limb of said a plurality of rotor blades is arranged to axially be inclined upwardly with respect to said.
4. axial fan according to claim 1, the said inner peripheral surface of wherein said housing comprise and are arranged to second inner peripheral surface parallel with said central axis.
5. axial fan according to claim 4, wherein in the middle of the distance between said inner peripheral surface and the said central axis, the distance between said second inner peripheral surface and the said central axis is the shortest.
6. axial fan according to claim 1, wherein said tie point are disposed in the radially inner side of said first inner peripheral surface or said second inner peripheral surface.
7. axial fan according to claim 1, wherein said housing, said base portion and said a plurality of stator vane are integrally formed as single part.
8. axial fan according to claim 1, wherein said housing comprises housing, said a plurality of stator vanes include the end, axial air side that flushes with the end, axial air side of said housing.
9. axial fan according to claim 1, wherein said first outward edge and said second outward edge are continuous each other.
10. axial fan according to claim 1, wherein said first outward edge and said the 3rd outward edge form the obtuse angle.
11. axial fan according to claim 1, wherein said first stator vane also comprises first inward flange and second inward flange;
Said first inward flange is arranged to the outer circumferential face towards said base portion, and between said first inward flange and said outer circumferential face, accompanies additional recess;
Said second inward flange links to each other with said first inward flange with said the 3rd outward edge, and the two is all perpendicular to said central axis; And
Said first inward flange and said second inward flange form the obtuse angle.
12. axial fan according to claim 1, wherein said first outward edge comprises curved surface.
13. axial fan according to claim 12, wherein said first inner peripheral surface comprises curved surface, and it is directly relative with the said first outer peripheral said curved surface that said curved surface is arranged to.
14. an axial fan, this axial fan comprises:
Impeller, said impeller comprise a plurality of rotor blades and can rotate around central axis;
Motor part, said motor part are arranged to drive rotatably said impeller;
Base portion, said base portion is arranged to support said motor part;
Housing, said housing comprise intake grill, exhaust outlet and the inner peripheral surface that centers on said impeller and said motor part; And
A plurality of stator vanes, said a plurality of stator vanes are arranged to respectively said base portion is connected with said housing; Wherein
Said inner peripheral surface comprises first inner peripheral surface, and said first inner peripheral surface is arranged to make the distance between said central axis and said first inner peripheral surface to increase towards said intake grill and said exhaust outlet in the axial direction;
In said a plurality of stator vanes, first stator vane is arranged to respectively said base portion is connected with said first inner peripheral surface, and said first stator vane comprises first outward edge, second outward edge and the 3rd outward edge;
Said first outward edge is arranged to towards said first inner peripheral surface, and between said first outward edge and said first inner peripheral surface, accompanies recess;
Said second outward edge links to each other with said first outward edge with said the 3rd outward edge, and the two is all perpendicular to said central axis;
Said first outward edge and the said second outer peripheral tie point are arranged to the radial outside in the outermost edge of said impeller; And
Said first outward edge comprises curved surface.
15. axial fan according to claim 14, the axial top edge of wherein said first stator vane and the axial lower limb of said a plurality of rotor blades are arranged to angled with respect to the direction vertical with said central axis.
16. comprising, axial fan according to claim 14, the said inner peripheral surface of wherein said housing be arranged to second inner peripheral surface parallel with said central axis.
17. axial fan according to claim 16, wherein in the middle of the distance between said inner peripheral surface and the said central axis, the distance between said second inner peripheral surface and the said central axis is the shortest.
18. axial fan according to claim 14, wherein said tie point are disposed in the radially inner side of said first inner peripheral surface or said second inner peripheral surface.
19. axial fan according to claim 14, wherein said housing, said base portion and said a plurality of stator vane are limited single integrated support structure.
20. axial fan according to claim 14, wherein said housing comprises housing, and said a plurality of stator vanes include the end, axial air side that flushes with the end, axial air side of said housing.
21. axial fan according to claim 14, wherein said first outward edge and said second outward edge are continuous each other.
22. axial fan according to claim 14, wherein said first stator vane also comprises first inward flange and second inward flange;
Said first inward flange is arranged to the outer circumferential face towards said base portion, and between said first inward flange and said outer circumferential face, accompanies additional recess;
Said second inward flange links to each other with said first inward flange with said the 3rd outward edge, and the two is all perpendicular to said central axis; And
Said first inward flange and said second inward flange form the obtuse angle.
23. axial fan according to claim 14, wherein said first inner peripheral surface comprises curved surface, and it is directly relative with the said first outer peripheral said curved surface that said curved surface is arranged to.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/338,563 | 2011-12-28 | ||
| US13/338,563 US8485781B2 (en) | 2007-10-31 | 2011-12-28 | Axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202612138U true CN202612138U (en) | 2012-12-19 |
Family
ID=47345842
Family Applications (2)
| 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 After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210028863.0A Active CN103185013B (en) | 2011-12-28 | 2012-02-09 | Axial fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN202612138U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185013A (en) * | 2011-12-28 | 2013-07-03 | 日本电产株式会社 | Axial fan |
| CN105951406A (en) * | 2016-05-31 | 2016-09-21 | 无锡小天鹅股份有限公司 | Portable clothes drying rack |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10422349B2 (en) * | 2014-07-08 | 2019-09-24 | Daikin Industries, Ltd. | Propeller fan and blower unit |
| CN109114042A (en) * | 2017-06-26 | 2019-01-01 | 台达电子工业股份有限公司 | Structure of fan frame |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE10020878C2 (en) * | 2000-04-28 | 2002-05-02 | Verax Ventilatoren Gmbh | Fans, in particular for ventilating electronic devices |
| 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 |
| TWI273175B (en) * | 2004-08-27 | 2007-02-11 | Delta Electronics Inc | Fan |
| TWI305486B (en) * | 2004-08-27 | 2009-01-11 | Delta Electronics Inc | Heat-dissipating fan and its housing |
| JP4664196B2 (en) * | 2005-11-30 | 2011-04-06 | 山洋電気株式会社 | Axial blower |
| CN100554702C (en) * | 2006-06-09 | 2009-10-28 | 日本电产株式会社 | Axial 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 |
| CN202612138U (en) * | 2011-12-28 | 2012-12-19 | 日本电产株式会社 | Axial fan |
-
2012
- 2012-02-09 CN CN 201220042037 patent/CN202612138U/en not_active Expired - Lifetime
- 2012-02-09 CN CN201210028863.0A patent/CN103185013B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185013A (en) * | 2011-12-28 | 2013-07-03 | 日本电产株式会社 | Axial fan |
| CN103185013B (en) * | 2011-12-28 | 2015-09-02 | 日本电产株式会社 | Axial fan |
| CN105951406A (en) * | 2016-05-31 | 2016-09-21 | 无锡小天鹅股份有限公司 | Portable clothes drying rack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103185013A (en) | 2013-07-03 |
| CN103185013B (en) | 2015-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8113775B2 (en) | Axial flow fan | |
| JP4935051B2 (en) | Centrifugal fan | |
| CN101988517B (en) | Ventilation fan | |
| JP2007218101A (en) | Axial fan and housing for axial fan | |
| CN202900768U (en) | Centrifugal blower | |
| CN101025168B (en) | Fan assembly | |
| US8109742B2 (en) | Rotor yoke with cup portion having a deviated center of gravity and a flange portion having a deviated rotational axis | |
| US20120177515A1 (en) | Mixed flow fan | |
| US8568110B2 (en) | Blower fan and method of manufacturing the same | |
| CN202612138U (en) | Axial fan | |
| US11933316B2 (en) | Blower | |
| JP2011501040A (en) | Axial fan and manufacturing method thereof | |
| JP2002070794A (en) | Impeller for axial flow blower | |
| CN102345644A (en) | Axial fan and slide mold | |
| US9273696B2 (en) | Axial fan, fan rotor and method of manufacturing a rotor for an axial fan | |
| US20080095623A1 (en) | Counter-rotating fan | |
| EP3576261A1 (en) | Motor and compressor that uses same | |
| JP2011174386A (en) | Impeller of centrifugal fan and method of molding the same | |
| US8485781B2 (en) | Axial flow fan | |
| JP6460957B2 (en) | Centrifugal fan | |
| JP6950422B2 (en) | Centrifugal fan | |
| CN107110179A (en) | Pressure fan | |
| JP2005127311A (en) | Centrifugal blower and air conditioner using it | |
| JP6687050B2 (en) | Centrifugal blower | |
| JP6297467B2 (en) | Centrifugal fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |