CN203445719U - Rotor lamination, rotor iron core, and motor - Google Patents
Rotor lamination, rotor iron core, and motor Download PDFInfo
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- CN203445719U CN203445719U CN201320482531.XU CN201320482531U CN203445719U CN 203445719 U CN203445719 U CN 203445719U CN 201320482531 U CN201320482531 U CN 201320482531U CN 203445719 U CN203445719 U CN 203445719U
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- ventilation hole
- rotor core
- rotor
- yoke portion
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Abstract
The utility model provides a rotor lamination, a rotor iron core, and a motor. The rotor lamination comprises a yoke portion shaped like a circular ring. The outer side of the yoke portion is provided with a plurality of cast aluminium grooves which are extended in the radial direction of the rotor lamination. The middle portion of the yoke portion is provided with a spindle hole. The yoke portion is provided with a plurality of first vent holes. The yoke portion is provided with a plurality of second vent holes which are extended in the radial direction of the rotor lamination. Each second vent hole is communicated with one of the first vent holes. One end of each second vent hole is close to the periphery of the rotor lamination. The rotor iron core is formed by laminating a plurality of rotor laminations. The rotor iron core comprises a yoke portion shaped like a circular column. The outer side of the yoke portion is provided with a plurality of cast aluminium grooves. The yoke portion is provided with a plurality of first vent holes which are extended in the axial direction of the rotor iron core. The yoke portion is provided with a plurality of second vent holes which are extended in the radial direction of the rotor iron core. Each second vent hole is communicated with one of the first vent holes. One end of each second vent hole is extended to the peripheral wall of the rotor iron core. The motor provided in the utility model has the advantage of good cooling effect, and can be used to avoid the occurrence of the large motor internal temperature difference condition during operation.
Description
Technical field
The utility model relates to machine field, especially relates to rotor punching, rotor core that motor that a kind of centrifugal compressor uses and this motor use.
Background technology
Motor is widely used in the various electric equipments of industrial production and life, and common motor comprises DC brushless motor, exchanges plastic packaging motor, threephase asynchronous machine etc.Existing motor all has stator and with respect to the rotor of stator rotation, armature spindle is arranged in rotor and with the rotation of rotor and rotates, and outputting power thus.
The motor that centrifugal compressor uses is at present threephase asynchronous machine, and it has stator and is arranged on the rotor in stator, and rotor is cast-aluminum rotor, the aluminium ring that it has rotor core and cast aluminium forms on rotor core.Rotor core is overrided to form by multi-disc rotor punching, referring to Fig. 1, it is circular that rotor punching 10 is roughly, it has circular yoke portion 11, in the outside of yoke portion 11, be provided with a plurality of aluminum cast grooves 12, a plurality of aluminum cast grooves 12 are distributed on the periphery of rotor punching 10, and are upwards evenly arranged in the week of rotor punching 10.Each aluminum cast groove 12 is along the radially extension of rotor punching 10, and the notch of aluminum cast groove 12 is towards the periphery of rotor punching 10.The middle part of rotor punching 10 offers circular shaft hole 13, so that armature spindle is through shaft hole 13.
And, in the yoke portion 11 between aluminum cast groove 12 and shaft hole 13, being provided with a plurality of ventilation holes 14, each ventilation hole 14 is circular, and a plurality of ventilation hole 14 adjacent layout between two, and is arranged on the position near shaft hole 13.
Referring to Fig. 2, rotor core 20 is overrided to form by multi-disc rotor punching 10, therefore rotor core 20 is roughly annulus column, it has the yoke portion 21 of annular, in the outside of yoke portion 21, form a plurality of aluminum cast grooves 22 being upwards evenly arranged in week, each aluminum cast groove 22 is along the radially extension of rotor core 20.
The middle part of rotor core 20 offers shaft hole 23, and armature spindle can pass shaft hole 23.And armature spindle and shaft hole 23 interference fit, realize the fixing of armature spindle and rotor core 20 thus, armature spindle rotates with the rotation of rotor core 23.
In yoke portion 21, be also provided with a plurality ofly along the axially extended ventilation hole 24 of rotor core 20, each ventilation hole 24 runs through whole rotor core 20.During rotor core 20 rotation, refrigerant can be flowed through ventilation hole 24 to reduce the temperature of rotor core 24.
After rotor core 20 cast aluminiums, at the two ends of rotor core 20, form respectively aluminium ring 26,27, aluminium ring 26,27 is to be also annulus column, and its internal diameter is greater than the internal diameter of rotor punching 10.
While moving due to motor, produce a large amount of heats, the mode that therefore conventionally adopts nozzle to spray refrigerant to threephase asynchronous machine is carried out cooling to motor.But, because the position of nozzle is fixed, the spray regime of nozzle is fixed, refrigerant often can only be injected on the end face of stator surface or rotor core 20, cooling effect to rotor core inside is not obvious, can not carry out stator inner surface coolingly, cause the temperature contrast of motor each several part larger, be unfavorable for the operation of motor.
Summary of the invention
Main purpose of the present utility model is to provide a kind of flow through rotor punching of rotor core inside of refrigerant that can allow.
Another object of the present utility model is to provide a kind of flow through rotor core of its stator inner surface of refrigerant that can allow.
An object more of the present utility model is to provide the good motor of a kind of cooling effect.
For realizing main purpose of the present utility model, the rotor punching that the utility model provides has circular yoke portion, the outside of yoke portion is provided with a plurality of aluminum cast grooves that radially extend along rotor punching, the middle part of yoke portion is provided with shaft hole, and yoke portion is provided with a plurality of the first ventilation holes, wherein, yoke portion is provided with at least one second ventilation hole radially extending along rotor punching, each second ventilation hole is communicated with first ventilation hole, and one end of the second ventilation hole is near the periphery of rotor punching.
From such scheme, the second ventilation hole radially extending is set on rotor punching, motor when operation refrigerant can flow through the first ventilation hole second ventilation hole of flowing through, can allow the refrigerant rotor core inside of fully flowing through like this, and rotor core also obtains cooling fully.
A preferred scheme is that the area of the first ventilation hole being communicated with the second ventilation hole is greater than the area of the first ventilation hole not being communicated with the second ventilation hole.
As can be seen here, by increasing the cross-sectional area of the first ventilation hole being communicated with the second ventilation hole, be more conducive to flowing of refrigerant, improve the cooling effect of rotor core.
For realizing another object of the present utility model, the rotor core that the utility model provides is overrided to form by multi-disc rotor punching, rotor core comprises the yoke portion of annulus column, the outside of yoke portion is provided with a plurality of aluminum cast grooves that radially extend along rotor core, the middle part of yoke portion is provided with shaft hole, and yoke portion is provided with a plurality of along axially extended the first ventilation hole of rotor core, wherein, yoke portion is provided with at least one second ventilation hole radially extending along rotor core, each second ventilation hole is communicated with first ventilation hole, one end of the second ventilation hole extends to the perisporium of rotor core.
From such scheme, one or more the second ventilation holes that radially extend are set on rotor core, and one end of the second ventilation hole extends to the perisporium of rotor core, the other end is communicated with the first ventilation hole.Like this, refrigerant can flow to the second ventilation hole from the first ventilation hole, is conducive to refrigerant and rotor core is carried out cooling fully.
A preferred scheme is that the second ventilation hole is positioned at the axial middle part of rotor core.Like this, can the flow through inside of rotor core of refrigerant, the cooling effect of rotor core is even more ideal.
For realizing an object more of the present utility model, the motor that the utility model provides has stator and is arranged on the cast-aluminum rotor on armature spindle, cast-aluminum rotor has rotor core, rotor core is overrided to form by multi-disc rotor punching, rotor core comprises the yoke portion of annulus column, the outside of yoke portion is provided with a plurality of aluminum cast grooves that radially extend along rotor core, the middle part of yoke portion is provided with shaft hole, and yoke portion is provided with a plurality of along axially extended the first ventilation hole of rotor core, wherein, yoke portion is provided with at least one second ventilation hole radially extending along rotor core, each second ventilation hole is communicated with first ventilation hole, one end of the second ventilation hole extends to the perisporium of rotor core.
And cast-aluminum rotor is after turning, the end of the second ventilation hole is cut out, and therefore the end of the second ventilation hole will be opened wide, and can make refrigerant flow out from the second ventilation hole, reach the effect of cooling stator inner surface.
From such scheme, the rotor core of electronics is provided with the second ventilation hole radially extending, and refrigerant can flow out from the second ventilation hole from the first ventilation hole flows to rotor core, reaches stator inner surface.Like this, can fully the flow through inner surface of the inner and stator of rotor core of refrigerant, makes motor internal cooling effect even, and the temperature contrast of each parts of motor is less, thereby reaches reduction electric machine temperature rise, the effect of lifting motor performance.
Accompanying drawing explanation
Fig. 1 is the structure chart of existing rotor punching.
Fig. 2 is the structure chart after existing rotor core cast aluminium.
Fig. 3 is the structure chart of the utility model rotor punching embodiment.
Fig. 4 is the structure chart after the utility model rotor core embodiment cast aluminium, turning.
Fig. 5 is the partial structurtes enlarged drawing before turning after the utility model rotor core embodiment cast aluminium.
Fig. 6 be after the utility model rotor core embodiment cast aluminium with armature spindle partly cut open figure.
Fig. 7 is the partial enlarged drawing of Fig. 6.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment
Motor of the present utility model is the threephase asynchronous machine being applied in centrifugal refigerating compressor, it has housing, and stator and rotor are installed in housing, and stator has stator core, the middle part of stator core is provided with circular rotor installing hole, and rotor is arranged in rotor installing hole.Rotor of the present utility model is cast-aluminum rotor, the aluminium ring that it has rotor core and is formed on rotor core two ends by cast aluminium.And rotor core is overrided to form by multi-disc rotor punching.
Referring to Fig. 3, rotor punching 30 is stamped to form by silicon steel sheet, and it is roughly circular, and is provided with circular yoke portion 31, is provided with a plurality of aluminum cast grooves 32 in the outside of yoke portion 31, and each aluminum cast groove 32 is along the radially extension of rotor punching 30.And a plurality of aluminum cast grooves 32 were upwards evenly arranged in the week of rotor punching 30, and were arranged on the periphery of rotor core 30.The notch of each aluminum cast groove 32 is towards the periphery of rotor punching 30, and during cast aluminium, aluminium liquid flows in aluminum cast groove 32 from notch.
The middle part of rotor punching 30 is provided with circular shaft hole 33, and armature spindle can pass shaft hole 33.Yoke portion 31 is provided with the ventilation hole 38 of a plurality of circles and the ventilation hole 36 of kidney-shaped, and the area of the ventilation hole 36 of kidney-shaped is greater than the area of circular ventilation hole 38.Ventilation hole 38 makes progress with the footpath of ventilation hole 36 at rotor punching 30, between aluminum cast groove 32 and shaft hole 33.
In the yoke portion 31 of rotor punching 30, be also provided with two ventilation holes 34 that radially extend along rotor punching 30, each ventilation hole 34 is all communicated with a ventilation hole 38, and the end 35 of ventilation hole 34 is near the periphery of rotor punching 30.As seen from Figure 3, the end 35 of ventilation hole 34 is sealed, and the end 35 of ventilation hole 34 does not pass the periphery of rotor punching 30.And each ventilation hole 34 is all between two adjacent aluminum cast grooves 32.
Referring to Fig. 4, rotor core 40 is overrided to form by multi-disc rotor punching, and in the present embodiment, a part that laminates into the rotor punching of rotor core 40 is existing rotor punching, and another part is above-mentioned rotor punching 30.Existing rotor punching equates with rotor punching 30 external diameters of the present utility model, therefore rotor core 40 is roughly annulus column, it has the yoke portion 41 of annulus column, the outside of yoke portion 41 is provided with a plurality of aluminum cast grooves 42, aluminum cast groove 42 is along the radially extension of rotor core 40, and is upwards evenly distributed on the periphery of rotor core 40 in the week of rotor core 40.Each aluminum cast groove 42 all has one towards the notch of rotor core 40 perisporiums, so that aluminium liquid is flowed through in aluminum cast groove 42 during cast aluminium.
The middle part of rotor core 40 is circular shaft hole 43, and as shown in Figure 6, armature spindle 58 can pass shaft hole 43, and armature spindle 58 and shaft hole 43 interference fit.Like this, during rotor core 40 rotation, armature spindle 58 is also with rotor core 40 rotations, thus outside outputting power.
It is circular ventilation hole 48 that the yoke portion 41 of rotor core 40 is provided with a plurality of cross sections, and each ventilation hole 48 is all along the extending axially of rotor core 40, and runs through two end walls of rotor core 40.During motor operation, refrigerant can flow to from one end of ventilation hole 48, and flows out from the other end of ventilation hole 48, thereby carries out cooling to rotor core 40, stator inner surface.
After rotor core 40 cast aluminiums, at the two ends of rotor core 40, form respectively aluminium ring 50,55, aluminium ring 50,55 is all annulus column, and the external diameter of aluminium ring 50,55 equates with the external diameter of rotor core 40, and the internal diameter of aluminium ring 50,55 is greater than the internal diameter of rotor core 40.
Referring to Fig. 5, the middle part of rotor core 40 is overrided to form by above-mentioned rotor punching 30, therefore at the middle part of rotor core 40, form two ventilation holes 44, each ventilation hole 44 is all along the radially extension of rotor core 40, and one end of each ventilation hole 44 is communicated with a ventilation hole 46, the other end of ventilation hole 44 extends on the perisporium of rotor core 40, so the end 45 of ventilation hole 44 extends to the perisporium of rotor core 40.
As seen from Figure 5, the ventilation hole 46 being communicated with ventilation hole 44 extends axially along rotor core 40, and the cross-sectional area of ventilation hole 46 is greater than the cross-sectional area of other axially extended ventilation holes 48 that are not communicated with ventilation hole 44.Preferably, each ventilation hole 46 is communicated with and is formed by adjacent two circular ventilation holes.
Referring to Fig. 6 and Fig. 7, the axially extended ventilation hole 46 of the interior formation of rotor core 40 and the ventilation hole 44 radially extending along rotor core 40, and ventilation hole 46 is communicated with ventilation hole 44, refrigerant, from one end of ventilation hole 46 flows to, can flow to ventilation hole 44.The direction of arrow shown in Fig. 7 is the flow direction of refrigerant, and refrigerant can in the inside of rotor core 40, both direction be mobile vertically and radially, carries out cooling better to rotor core 40, stator inner surface.
In the present embodiment, ventilation hole 44 is positioned at the axial middle part of rotor core 40, during practical application, the quantity of ventilation hole 44 can be three or more than, and rotor core 40 axially on more than two ventilation holes 44 can be set, so that refrigerant is cooling better to rotor core, while making motor operation, the temperature contrast of motor is little.If the quantity of ventilation hole radially 44 be two or more than, many ventilation holes radially rotor core 40 axially on should be uniformly distributed.
After manufacturing rotor core 40, need rotor core 40 to carry out cast aluminium operation, for fear of aluminium liquid, flow to ventilation hole 44 and stop up ventilation hole 44, the end 35 of the ventilation hole 34 on rotor punching 30 is not communicated with the periphery of rotor punching 30, so the end 35 of the ventilation hole 34 of rotor punching 30 is sealed.After rotor core 40 cast aluminiums, just 45 turning of the end of ventilation hole 44 are formed to uncovered ventilation hole 44.
Due to a plurality of axially extended ventilation holes 48,46 being set on rotor core 40, the ventilation hole 44 radially extending along rotor core 40 is also set, can the flow through radial component of rotor core 40 of refrigerant, is conducive to rotor core 40 to carry out comprehensively cooling, guarantees the operation of motor.
Certainly, above-described embodiment be only the utility model preferred embodiment, during practical application, can have more change, for example, the cross-sectional area of the axial ventilation hole being communicated with radial ventilation hole can equate with the cross-sectional area of other axial ventilation holes; Or the quantity in radial ventilation hole is more than three, and be upwards evenly arranged in the week of rotor punching, rotor core, such change also can realize the purpose of this utility model.
Finally it is emphasized that; the utility model is not limited to above-mentioned execution mode, as the change of quantity of the ventilation hole radially extending, the variations such as change of axially extended ventilation hole shape of cross section also should be included in the protection range of the utility model claim.
Claims (10)
1. rotor punching, comprises
Circular yoke portion, the outside of described yoke portion is provided with a plurality of aluminum cast grooves that radially extend along rotor punching, and the middle part of described yoke portion is provided with shaft hole, and yoke portion is provided with a plurality of the first ventilation holes;
It is characterized in that:
Described yoke portion is provided with the second ventilation hole that at least one radially extends along described rotor punching, and described in each, the second ventilation hole is communicated with described first ventilation hole, and one end of described the second ventilation hole is near the periphery of described rotor punching.
2. rotor punching according to claim 1, is characterized in that:
The area of described the first ventilation hole being communicated with described the second ventilation hole is greater than the area of described the first ventilation hole not being communicated with described the second ventilation hole.
3. rotor punching according to claim 1 and 2, is characterized in that:
Described the second ventilation hole is between two adjacent described aluminum cast grooves.
4. rotor core, is overrided to form by multi-disc rotor punching, and described rotor core comprises
The yoke portion of annulus column, the outside of described yoke portion is provided with a plurality of aluminum cast grooves that radially extend along rotor core, and the middle part of described yoke portion is provided with shaft hole, and yoke portion is provided with a plurality of along axially extended the first ventilation hole of described rotor core;
It is characterized in that:
Described yoke portion is provided with the second ventilation hole that at least one radially extends along described rotor core, and described in each, the second ventilation hole is communicated with described first ventilation hole, and one end of described the second ventilation hole extends to the perisporium of described rotor core.
5. rotor core according to claim 4, is characterized in that:
The cross-sectional area of described the first ventilation hole being communicated with described the second ventilation hole is greater than the cross-sectional area of described the first ventilation hole not being communicated with described the second ventilation hole.
6. according to the rotor core described in claim 4 or 5, it is characterized in that:
Described the second ventilation hole is between two adjacent described aluminum cast grooves.
7. according to the rotor core described in claim 4 or 5, it is characterized in that:
The quantity of described the second ventilation hole is one, and described the second ventilation hole is positioned at the axial middle part of described rotor core.
8. motor, comprises
Stator and be arranged on the rotor in described stator, described rotor has rotor core, described rotor core has the yoke portion of annulus column, the outside of described yoke portion is provided with a plurality of aluminum cast grooves that radially extend along rotor core, the middle part of described yoke portion is provided with shaft hole, and yoke portion is provided with a plurality of along axially extended the first ventilation hole of described rotor core;
It is characterized in that:
Described yoke portion is provided with the second ventilation hole that at least one radially extends along described rotor core, and described in each, the second ventilation hole is communicated with described first ventilation hole, and one end of described the second ventilation hole extends to the perisporium of described rotor core.
9. motor according to claim 8, is characterized in that:
The cross-sectional area of described the first ventilation hole being communicated with described the second ventilation hole is greater than the cross-sectional area of described the first ventilation hole not being communicated with described the second ventilation hole.
10. motor according to claim 8 or claim 9, is characterized in that:
The quantity of described the second ventilation hole is one, and described the second ventilation hole is positioned at the axial middle part of described rotor core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482531.XU CN203445719U (en) | 2013-08-07 | 2013-08-07 | Rotor lamination, rotor iron core, and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482531.XU CN203445719U (en) | 2013-08-07 | 2013-08-07 | Rotor lamination, rotor iron core, and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203445719U true CN203445719U (en) | 2014-02-19 |
Family
ID=50096735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320482531.XU Expired - Fee Related CN203445719U (en) | 2013-08-07 | 2013-08-07 | Rotor lamination, rotor iron core, and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203445719U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086684A (en) * | 2017-06-29 | 2017-08-22 | 广东美芝精密制造有限公司 | Rotor and its manufacture method, rotary compressor and air-conditioning |
| CN110474458A (en) * | 2019-09-24 | 2019-11-19 | 上海电气集团上海电机厂有限公司 | A kind of rotor punching wind path structure |
| CN114598051A (en) * | 2022-03-02 | 2022-06-07 | 蔚来动力科技(合肥)有限公司 | Motor for vehicle and vehicle |
-
2013
- 2013-08-07 CN CN201320482531.XU patent/CN203445719U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086684A (en) * | 2017-06-29 | 2017-08-22 | 广东美芝精密制造有限公司 | Rotor and its manufacture method, rotary compressor and air-conditioning |
| CN107086684B (en) * | 2017-06-29 | 2023-04-25 | 广东美芝精密制造有限公司 | Rotor, manufacturing method thereof, rotary compressor and air conditioner |
| CN110474458A (en) * | 2019-09-24 | 2019-11-19 | 上海电气集团上海电机厂有限公司 | A kind of rotor punching wind path structure |
| CN110474458B (en) * | 2019-09-24 | 2024-05-14 | 上海电气集团上海电机厂有限公司 | Rotor punching sheet air path structure |
| CN114598051A (en) * | 2022-03-02 | 2022-06-07 | 蔚来动力科技(合肥)有限公司 | Motor for vehicle and vehicle |
| CN114598051B (en) * | 2022-03-02 | 2024-02-27 | 蔚来动力科技(合肥)有限公司 | Motor for vehicle and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20210807 |