CN109888953A - The heat dissipation shaft certainly of magnetic-suspension high-speed magneto - Google Patents
The heat dissipation shaft certainly of magnetic-suspension high-speed magneto Download PDFInfo
- Publication number
- CN109888953A CN109888953A CN201711275275.6A CN201711275275A CN109888953A CN 109888953 A CN109888953 A CN 109888953A CN 201711275275 A CN201711275275 A CN 201711275275A CN 109888953 A CN109888953 A CN 109888953A
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- Prior art keywords
- shaft
- ventilation hole
- magnetic
- heat dissipation
- flabellum
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- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Heat dissipation shaft, one end of the shaft certainly that the present invention provides a kind of magnetic-suspension high-speed magneto are axially formed the ventilation hole of blind hole form, and the inner end of the ventilation hole is connected to the shaft surface further through several oblique exhaust vents；There are gap between the stator and shaft, the outlet of the oblique exhaust vent is located at the side in the gap.In shaft rotary work, air in oblique air vent is thrown away under the action of rotary centrifugal force from outlet, is caused in the ventilation hole in negative pressure, to which cold air be sucked from the outer end of the ventilation hole, heat on the inside of absorption plant, meanwhile, the air thrown away from the outlet of oblique air vent flows outward, after heat exchange is cooling, ventilation hole entrance one end is flowed back into, is looped back and forth like this, effectively realizes and cooling purpose is carried out to the magnet steel of shaft and its surface.
Description
Technical field
The present invention relates to a kind of high-power super-high-speed magnetoes, in particular to inside high-power super-high-speed magneto
From heat dissipation shaft.
Background technique
As shown in Figure 1, be the structure principle chart of existing high-power super-high-speed magneto, shaft 1 by thrust bearing 2,
Magnetic suspension bearing 3 and auxiliary bearing 4 are rotatably coupled with base 5, are further fixed on the base 5 of 1 periphery side position of shaft
Stator 6, the winding on stator 6 are powered, can the rotation of drive shaft 1 and output torque.
As shown in Figure 2 and Figure 3, several magnet steel 11 are cased with outside the shaft 1, are separated between magnet steel 11 with magnetic bridge 12, magnetic
11 outside of steel carbon fiber set or nonmagnetic metal set 13 are fixed.
With the power increase of magneto, the radius of the shaft 1 is also increased with it, thus the centrifugation that magnet steel 11 is subject to
Power be also in geometric progression increase, magnet steel 11 is thrown out in order to prevent, the thickness of carbon fiber set or nonmagnetic metal set 13
Also must increase, heat-sinking capability but has dropped.More seriously, the harmonic field that stator 6 generates can pass through carbon fiber set
Or nonmagnetic metal set 13 causes magnet steel 11 to cause performance decline even to be demagnetized because temperature is too high, power so that magnet steel 11 generates heat
Bigger motor is such.
Existing high-power super-high-speed magneto, is generally equipped with external fan 7, for cooling down to motor, however
Since magnet steel 11 is located inside shaft 1, external fan 7 and can not by airflow blow at shaft 1, in fact it is basic cooling less than
Magnet steel 11.
Summary of the invention
The object of the present invention is to provide a kind of magnetic-suspension high-speed magnetoes from heat dissipation shaft, solves the prior art
The technical issues of effective temperature-reducing can not being carried out to magnet steel.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of heat dissipation shaft certainly of magnetic-suspension high-speed magneto, it is characterised in that: one end of the shaft is along axial shape
At the ventilation hole for having blind hole form, the inner end of the ventilation hole is connected to the shaft table further through several oblique exhaust vents
Face；
There are gap between the stator and shaft, the outlet of the oblique exhaust vent is located at the side in the gap.
Preferably, forming the flabellum with shaft in integral structure on the shaft outer surface, the flabellum is protruded from
Shaft periphery, the flabellum are located at shaft and form gap and side identical with the shaft ventilation hole entrance with stator
And it can blow to the gap between the shaft and stator.
Preferably, the flabellum protrudes from shaft periphery 3-6mm.
Preferably, the flabellum protrudes from shaft periphery 4-5mm.
Preferably, the axial direction of the flabellum length direction and shaft is obliquely arranged at an angle.
Preferably, the angle is between 23-30 degree.
Compared with prior art, by adopting the above technical scheme present invention has the advantage that: shaft rotate work
When making, the air in oblique air vent is thrown away under the action of rotary centrifugal force from outlet, leads to place in the ventilation hole
In negative pressure, thus cold air is sucked from the outer end of the ventilation hole, the heat on the inside of absorption plant, meanwhile, from oblique ventilation
The air that the outlet in hole is thrown away flows outward, and after heat exchange is cooling, the outer end for flowing back into ventilation hole is inhaled into again.It so can be
The inside of shaft directly cools down the magnet steel of rotor surface, dissipates so as to efficiently solve high speed magnetic suspension motor magnet steel
The bad problem of heat.
The present invention is further equipped with flabellum in the outer end side of shaft ventilation hole, because being that flabellum is shaped in shaft
Surface, under high speed rotation, flabellum directly can carry out strong wind cooling to gap between rotor and stator, in conjunction with spindle central
The effect of ventilation hole loops back and forth like this, and guarantees inside shaft and its temperature of the magnet steel on surface is in safe range.
Detailed description of the invention
Fig. 1 is the structure principle chart of existing high-power super-high-speed magneto；
Fig. 2, Fig. 3 are the shaft floor map and its transverse sectional view of existing high-power super-high-speed magneto respectively；
Fig. 4 is the structure principle chart provided by the invention from the magnetic-suspension high-speed magneto applied by shaft that radiates；
Fig. 5, Fig. 6 be respectively magnetic-suspension high-speed magneto provided by the invention from heat dissipation shaft floor map with
Longitudinal sectional view.
Description of symbols: shaft 1,1 '；Magnet steel 11；Magnetic bridge 12；Carbon fiber set or nonmagnetic metal set 13；Flabellum
15；Thrust bearing 2, magnetic suspension bearing 3；Auxiliary bearing 4；Base 5；Stator 6；External fan 7；Ventilation hole 8；Oblique exhaust vent
81；Ventilation slot 91；Return air channel 92；Gap h；Angle k.
Specific embodiment
As shown in figure 4, the present invention provides a kind of heat dissipation shaft certainly, it is applied on magnetic-suspension high-speed magneto, the magnetcisuspension
Floating high-speed permanent magnet motor includes base 5, shaft 1 ' and stator 6, in which: the shaft 1 ' is of the present invention from heat dissipation
Shaft.
As shown in Figure 5, Figure 6, one end of shaft 1 ' of the present invention is also formed with the ventilation hole 8 of blind hole form along axial direction,
The inner end of the ventilation hole 8 is connected to the 1 ' surface of shaft further through 3-6 oblique exhaust vents 81.As shown in Figure 5, Figure 6,
The flabellum 15 with shaft 1 ' in integral structure is formed on 1 ' outer surface of shaft of the present invention, the flabellum 15 protrudes from shaft
1 ' periphery 3-6mm (preferably 4-5mm), k is obliquely arranged the axial direction of 15 length direction of flabellum and shaft 1 ' at an angle,
The angle k is between 23-30 degree.
In the present embodiment, the outlet of the oblique exhaust vent 81 is located at the two of the gap h with the flabellum 15
Side, i.e., flabellum 15 is in the same side of the entrance of ventilation hole 8；It is designed in this way to form optimal heat exchange cycle, the stator 6 and base
Ventilation slot 91 is also reserved between 5.
As shown in figure 4, being equipped with return air channel 92, return air channel 92 on the bearing block of the tail end of the ventilation hole 8 of shaft 1 '
It is connected to the tail end entrance inside machine cavity with shaft ventilation hole 8, for will be delivered in ventilation hole 8 through cooling wind.
As shown in figure 4, in 1 ' rotary work of shaft, being located at due to certainly existing gap h between stator 6 and shaft 1 '
The flabellum 15 of the side the gap h will blow to the gap h, so as to be blown to gap h another for the hot-air being located at the h of gap
Play the role of cooling down to magnet steel 11 so that heat caused by magnet steel 11 be taken away in time in side.
As shown in figure 4, in 1 ' rotary work of shaft, the work of air in oblique air vent 8 in rotary centrifugal force
It under, throws away, causes in the ventilation hole 8 in negative pressure from outlet, so that cold air be inhaled from the outer end of the ventilation hole 8
Enter, the heat on the inside of absorption plant, meanwhile, the air thrown away from the outlet of oblique air vent 8 flows outward, by described logical
It is exchanged heat after cooling after wind groove 91, a part flows back into the position of fan, and continuation passes through from the gap h and takes away shaft 1 '
The heat in outside, loops back and forth like this, and cools down to the magnet steel 11 of shaft 1 ' and its surface.Another part is through being located at shaft 1 '
Return air channel 92 on the bearing block of tail end flows back into the air inlet end of 1 ' ventilation hole 8 of shaft, so recycles, internal from shaft 1 '
The magnet steel 11 on its surface is cooled down.
Above embodiments are only demonstration explanation to be carried out to the present invention, rather than limit the protection scope of the application, this field
Technical staff can carry out conventional modifications or substitutions, but these modifications or substitutions are still answered on the basis of the above embodiments
When the protection scope for belonging to the application.
Claims (6)
1. a kind of heat dissipation shaft certainly of magnetic-suspension high-speed magneto, it is characterised in that:
One end of the shaft is axially formed the ventilation hole of blind hole form, and the inner end of the ventilation hole is further through several
Oblique exhaust vent is connected to the shaft surface；
There are gap between the stator and shaft, the outlet of the oblique exhaust vent is located at the side in the gap.
2. the heat dissipation shaft certainly of magnetic-suspension high-speed magneto according to claim 1, it is characterised in that: outside the shaft
The flabellum with shaft in integral structure is formed on surface, the flabellum protrudes from shaft periphery, and the flabellum, which is located at, to be turned
Axis and stator formation gap and side identical with the shaft ventilation hole entrance simultaneously can be between the shaft and stators
Gap air-supply.
3. the heat dissipation shaft certainly of magnetic-suspension high-speed magneto according to claim 1, it is characterised in that: the flabellum is convex
For shaft periphery 3-6mm.
4. the heat dissipation shaft certainly of magnetic-suspension high-speed magneto according to claim 1, it is characterised in that: the flabellum is convex
For shaft periphery 4-5mm.
5. the heat dissipation shaft certainly of magnetic-suspension high-speed magneto according to claim 1, it is characterised in that: the flabellum is long
The axial direction of degree direction and shaft is obliquely arranged at an angle.
6. the heat dissipation shaft certainly of magnetic-suspension high-speed magneto according to claim 6, it is characterised in that: the angle is situated between
Between 23-30 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711275275.6A CN109888953A (en) | 2017-12-06 | 2017-12-06 | The heat dissipation shaft certainly of magnetic-suspension high-speed magneto |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711275275.6A CN109888953A (en) | 2017-12-06 | 2017-12-06 | The heat dissipation shaft certainly of magnetic-suspension high-speed magneto |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109888953A true CN109888953A (en) | 2019-06-14 |
Family
ID=66923568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711275275.6A Pending CN109888953A (en) | 2017-12-06 | 2017-12-06 | The heat dissipation shaft certainly of magnetic-suspension high-speed magneto |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109888953A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116388430A (en) * | 2023-04-10 | 2023-07-04 | 山东华东风机有限公司 | Rotor spindle and magnetic suspension motor |
-
2017
- 2017-12-06 CN CN201711275275.6A patent/CN109888953A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116388430A (en) * | 2023-04-10 | 2023-07-04 | 山东华东风机有限公司 | Rotor spindle and magnetic suspension motor |
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