CN206636831U - A kind of fan structure for reducing traction electric machine noise - Google Patents
A kind of fan structure for reducing traction electric machine noise Download PDFInfo
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- CN206636831U CN206636831U CN201621076911.3U CN201621076911U CN206636831U CN 206636831 U CN206636831 U CN 206636831U CN 201621076911 U CN201621076911 U CN 201621076911U CN 206636831 U CN206636831 U CN 206636831U
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Abstract
The utility model discloses a kind of fan structure for reducing traction electric machine noise, the cooling fan is arranged in the rotating shaft of traction electric machine, and the cooling fan includes fan hub and the multi-disc fan blade being disposed in an evenly spaced relation in fan hub, the fan hub includes wheel hub and fan lower hub on fan, and the fan blade is arranged on the fan between wheel hub and fan lower hub；The fan blade includes being connected to the 4th edge of the end points of the close rotating shaft of the 3rd edge of the end points of the remote rotating shaft of the first edge on the fan on wheel hub, the second edge being connected in the fan lower hub, the connection first edge and second edge and the connection first edge and second edge, and the 3rd edge and the angle of rotating shaft are 10 °~60 °；The utility model by combine water conservancy diversion principle and improve leaf structure make full use of flow-guiding structure fluid Rational flow and blade profile optimization after reduce the characteristic of noise, improve the cooling capacity of cooling system.
Description
Technical field
It the utility model is related to a kind of motor radiating fan structure, and in particular to a kind of traction electric machine noise that can reduce
Fan structure.
Background technology
In trailer system, the volume requirement of traction electric machine is less and less, and power requirement is increasing, and this is just to traction electricity
The cooling capacity of machine requires more and more higher.In traction electric machine ventilation cooling system, the cooling fan and traction electricity of traction electric machine
The noise of machine has very important relation.The heat given out with traction electric machine further increases, mutually in requisition for cooling
System takes away the more heats of traction electric machine to meet the increased needs of its power, the important portion after power increase in cooling system
Part fan, in order to meet the cooling requirements of traction electric machine, when cooling fan designs in ventilating system, require logical to solve cooling
Noise problem can be often have ignored, in order to meet the needs of cooling system acting, fan noise can improve rapidly, cause traction electric machine
Noise is excessive, has had a strong impact on overall performance, by bus the environment even health of the mankind.
Therefore, in existing trailer system compact structure, densification, while meet hot because power of traction motor improves
On the premise of amount increases, designing a kind of task for the fan structure that can reduce traction electric machine noise becomes more and more important.
Utility model content
The purpose of this utility model is to propose a kind of drop that can reduce traction electric machine noise for above-mentioned technical problem
The fan structure of low traction electric machine noise.
Technical scheme is used by the utility model solves above-mentioned technical problem：A kind of wind for reducing traction electric machine noise
Fan structure, including cooling fan and the cooling fan are arranged in the rotating shaft of traction electric machine, and the cooling fan includes fan wheel
Hub and the multi-disc fan blade being disposed in an evenly spaced relation in fan hub, the fan hub include wheel hub and fan on fan
Lower hub, the fan blade are arranged on the fan between wheel hub and fan lower hub；The fan blade includes connection
First edge on the fan on wheel hub, the second edge being connected in the fan lower hub, connection first side
The 3rd edge and the connection first edge of the end points of the remote rotating shaft of edge and second edge and the close of second edge turn
4th edge of the end points of axle, and the 3rd edge and the angle of rotating shaft are 10 °~60 °.
In the utility model, the angle between the 3rd edge and the 4th edge is 17 °.
In the utility model, the fan blade includes air guide ring, and the air guide ring is arranged in the fan lower hub,
The air guide ring is ring baffle, and the wall thickness of the ring baffle is less than the wall thickness of the fan lower hub and the ring baffle
Internal diameter matches with the external diameter of the fan lower hub.
In the utility model, the cooling fan includes 13 fan blade.
In the utility model, the angle of the 3rd edge and second edge is 57 °.
In the utility model, the angle of the 4th edge and second edge is 140 °
In the utility model, the spacing on the fan between wheel hub and fan lower hub is 30mm.
In the utility model, the tangent line of end points and the angle of rotating shaft of the close rotating shaft of the first edge are 37 °.
In the utility model, it is provided between the internal face of air guide ring and the traction electric machine housing between at least 2mm
Away from.
The utility model is solved because being cooled down after traction electric machine heating increase by combining water conservancy diversion principle and improving leaf structure
Some higher shortcomings of fan noise in system.Make full use of flow-guiding structure fluid Rational flow and blade profile optimization after reduce and make an uproar
The characteristic of sound, the fan structure device of the reduction traction electric machine noise of novelty is have developed, in the increased premise of traction electric machine heating
Under, the noise of fan is reduced, improves the cooling capacity of cooling system, traction electric machine compact-sizedization is adapted to and minimizes
Demand.
Brief description of the drawings
Fig. 1 is the structural representation of fan blade of the prior art；
Fig. 2 is scheme of installation of the cooling fan in traction electric machine in the embodiment of the utility model one；
Fig. 3 is the cross section structure diagram of the cooling fan in the embodiment of the utility model one；
Fig. 4 be the embodiment of the utility model one in fan blade structural representation, wherein, a represent the 3rd edge with
The angle of rotating shaft；
Fig. 5 is the structural representation of the air guide ring in the embodiment of the utility model one.
Embodiment
It is new to this practicality below in conjunction with drawings and Examples in order to illustrate more clearly of the technical solution of the utility model
The technical scheme of type is further elaborated, it should be apparent that, description below is only some implementations of the present utility model
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these embodiments
Obtain other embodiments.
Reference picture 2 to Fig. 5, a kind of fan structure for reducing traction electric machine noise, cooling fan 100 is arranged on traction electric machine
Rotating shaft 200 on, and the cooling fan 100 includes fan hub and the multi-disc fan that is disposed in an evenly spaced relation in fan hub
Blade 3, fan hub include wheel hub 1 and fan lower hub 5 on fan, and fan blade 3 is arranged on wheel hub 1 and fan on fan
Between lower hub 5；And the fan blade 3 include be connected on fan on wheel hub 1 first edge 7, be connected to fan lower hub 5
On second edge 8, connect first edge 7 lower edge and second edge 8 remote rotating shaft 200 end points the 3rd edge 9 with
And connection first edge 7 upper limb and second edge 8 close rotating shaft 200 end points the 4th edge 10, and the 3rd edge 9 and
The angle a of rotating shaft 200 size be 10 °~60 °, i.e., the angular range between the 3rd edge 9 and second edge 8 be 30 °~
80°；3rd edge 9 and the angle a of rotating shaft 200 be specifically as follows 10 °, 20 °, 25 °, 30 °, 33 °, 35 °, 40 °, 45 °, 50 °,
55 ° or 60 ° etc..Angle between 3rd edge 9 and the 4th edge 10 is 17 °；I.e. the external form of fan blade 3 is tied for wedge shape
Structure.Preferably, cooling fan 100 includes 13 fan blade 3, wherein, on fan between wheel hub 1 and fan lower hub 5 between
Away from for 30mm, the angle of the 3rd edge 9 and second edge 8 is 57 °, and the 4th edge 10 and the angle of second edge 8 are 140 °.
Certainly, in other embodiments, the angle between the 4th edge 10 and second edge 8 can also be 134 ° of grade other angle values.
Cooling fan 100 is rotated in the case where the rotor of traction electric machine drives and produces centrifugal force, and traction electricity will be entered from air inlet
The cooling air-flow of machine pumps to outlet one's intention as revealed in what one says, the wedge structure blade profile of fan leaf 3 be fan blade 3 is optimized it is excellent after improving
Select blade profile, fan blade of the prior art and the 9 corresponding edge of the 3rd edge of the fan blade 3 in the utility model be with
The flat construction (as shown in Figure 1) of shaft parallel so that produce substantial amounts of whirlpool during flowing of the cooling air-flow between fan blade
Stream, great resistance is produced to cooling air-flow and sends very big noise, after fan blade 3 is using improving in the utility model
Wedge structure, hypotenuse structure is formed by the 3rd edge 9 of fan blade 3 so that cooling air-flow is subject at the 3rd edge 9
Resistance lowers, and improves cooling air-flow by flow regime during fan blade 3, reduces the whirlpool of fluid between fan blade 3
Stream so that cooling air-flow is substantially reduced by the resistance of cooling fan 100, and cooling air-flow is easy to by cooling fan 100, so as to
Reduce its scrambling, so as to reduce the noise of cooling fan 100.
In one embodiment, the ring gear 2 that tests the speed is provided with fan hub, the ring gear 2 that tests the speed is arranged on fan lower whorl
On hub 5, the rotating speed of traction electric machine is accurately measured by the ring gear 2 that tests the speed.
In one embodiment, to prevent cooling fan 100 from being interfered in rotation process, cooling fan 100 with
Certain gap is provided between the inwall 300 of traction electric machine housing, substantial amounts of cooling air-flow is back to traction electricity out of this gap
Inside machine, larger noise and flow loss are produced, therefore, fan blade 3 includes air guide ring 6, the air guide ring 6 is arranged on fan
In lower hub 5, air guide ring 6 is fixed on fan lower hub away from wheel hub side on fan by screw lock, it is preferred that air guide ring
2 can be fixedly mounted on the inner side for the ring gear 2 that tests the speed, and air guide ring 6 is ring baffle, and the wall thickness of ring baffle is less than fan lower hub
The internal diameter of 5 wall thickness and the ring baffle matches with the external diameter of fan lower hub 5.The inwall of air guide ring 6 and traction electric machine housing
At least 2mm spacing is provided between 300.Preferably, by increasing air guide ring 6, when cooling fan 100 rotates, reduce cold
But the backflow phenomenon of air-flow, and then backflow noise and the flow loss of cooling air-flow are reduced, reduce making an uproar for cooling fan 100
Sound and the cooling capacity for improving cooling fan 100.
The utility model is solved because being cooled down after traction electric machine heating increase by combining water conservancy diversion principle and improving leaf structure
Some higher shortcomings of fan noise in system.Make full use of flow-guiding structure fluid Rational flow and blade profile optimization after reduce and make an uproar
The characteristic of sound, the fan structure device of the reduction traction electric machine noise of novelty is have developed, in the increased premise of traction electric machine heating
Under, the noise of fan is reduced, improves the cooling capacity of cooling system, traction electric machine compact-sizedization is adapted to and minimizes
Demand.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (9)
1. a kind of fan structure for reducing traction electric machine noise, including cooling fan and the cooling fan are arranged on traction electric machine
In rotating shaft, and the cooling fan includes fan hub and the multi-disc fan blade being disposed in an evenly spaced relation in fan hub, institute
Stating fan hub includes wheel hub and fan lower hub on fan, and the fan blade is arranged on the fan under wheel hub and fan
Between wheel hub；Characterized in that, the fan blade includes being connected to first edge on the fan on wheel hub, is connected to institute
State the 3rd edge of the end points of the remote rotating shaft of second edge in fan lower hub, the connection first edge and second edge
And the 4th edge of the end points of the close rotating shaft of the connection first edge and second edge, and the 3rd edge and rotating shaft
Angle be 10 °~60 °.
2. the fan structure of traction electric machine noise is reduced as claimed in claim 1, it is characterised in that the 3rd edge and the
Angle between four edges is 17 °.
3. the fan structure of traction electric machine noise is reduced as claimed in claim 1, it is characterised in that the fan blade includes
Air guide ring, the air guide ring are arranged in the fan lower hub, and the air guide ring is ring baffle, the wall thickness of the ring baffle
Matched less than the wall thickness of the fan lower hub and the internal diameter of the ring baffle with the external diameter of the fan lower hub.
4. the fan structure of traction electric machine noise is reduced as claimed in claim 1, it is characterised in that the cooling fan includes
13 fan blade.
5. the fan structure of traction electric machine noise is reduced as claimed in claim 1, it is characterised in that the 3rd edge and the
The angle at two edges is 57 °.
6. the fan structure of traction electric machine noise is reduced as claimed in claim 1, it is characterised in that the 4th edge and the
The angle at two edges is 140 °.
7. the fan structure of traction electric machine noise is reduced as claimed in claim 1, it is characterised in that the first edge is leaned on
The tangent line of end points and the angle of rotating shaft of nearly rotating shaft are 37 °.
8. as claimed in claim 1 reduce traction electric machine noise fan structure, it is characterised in that on the fan wheel hub and
Spacing between fan lower hub is 30mm.
9. the fan structure of traction electric machine noise is reduced as claimed in claim 3, it is characterised in that the air guide ring and traction
At least 2mm spacing is provided between the internal face of electric machine casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621076911.3U CN206636831U (en) | 2016-09-23 | 2016-09-23 | A kind of fan structure for reducing traction electric machine noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621076911.3U CN206636831U (en) | 2016-09-23 | 2016-09-23 | A kind of fan structure for reducing traction electric machine noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206636831U true CN206636831U (en) | 2017-11-14 |
Family
ID=60260304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621076911.3U Active CN206636831U (en) | 2016-09-23 | 2016-09-23 | A kind of fan structure for reducing traction electric machine noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206636831U (en) |
-
2016
- 2016-09-23 CN CN201621076911.3U patent/CN206636831U/en active Active
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