CN204810012U - A motor that is used for rotor of motor and includes this rotor - Google Patents
A motor that is used for rotor of motor and includes this rotor Download PDFInfo
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- CN204810012U CN204810012U CN201520490698.XU CN201520490698U CN204810012U CN 204810012 U CN204810012 U CN 204810012U CN 201520490698 U CN201520490698 U CN 201520490698U CN 204810012 U CN204810012 U CN 204810012U
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- rotor core
- rotor
- spoke
- cooling duct
- motor
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Abstract
The utility model provides the utility model discloses a rotor of motor, this rotor include rotor core (2a), and this rotor core (2a) has outside part (21a) and more is close to the inside part (22a) of the rotation axis location of rotor core (2a) than this outside part (21a). Outside part (21a) is connected to inside part (22a) through a plurality of spokes (6a) to rotor core (2a) is suitable for and is connected to the rotor shaft through the expansion fit. Every spoke in the spoke (6a) all includes at least one incline portion (61a) of extending for the radial direction of rotor core (2a) with spoke angle ( alpha a), and the spoke angle is greater than 30.
Description
Technical field
The utility model relates to the rotor for motor.
Background technology
The known rotor for induction machine comprises rotor core, the interior section that this rotor core has exterior section and locates closer to the rotation of rotor core than exterior section.Exterior section is connected to interior section by multiple spoke, and each spoke in described multiple spoke all radially extends.These spokes are spaced apart from each other in circumferential direction, make to there is axial cooling duct between every two adjacent spokes.Described known rotor also comprises the armature spindle being attached to rotor core by shrink-fit.
Be to a shortcoming in the relevant shortcoming of upper rotor part, when rotor heating during use, the shrink-fit between rotor core and armature spindle is loose in the extreme.Such as, in working order, the outer surface of the rotor of induction machine heats more very than the outer surface of the rotor of magneto.According to design, compare the situation that rotor is colder, the shrink-fit at the working temperature between the rotor core of induction machine and armature spindle only can transmit the moment of torsion of 30%.The tightness increasing shrink-fit may cause the bending of armature spindle.Therefore, the shrink-fit of the practicality provided between rotor core and armature spindle is provided.
Utility model content
The purpose of this utility model is that the motor providing a kind of rotor for motor and comprise this rotor is to alleviate above shortcoming.The purpose of this utility model is realized by following rotor and motor.
The utility model provides a kind of rotor for motor, described rotor comprises rotor core, described rotor core has exterior section and is positioned to than the interior section of described exterior section closer to the rotation of described rotor core, described exterior section is connected to described interior section by multiple spoke, and described rotor core is suitable for being connected to armature spindle by shrink-fit, it is characterized in that, each spoke in described spoke includes at least one deflection portion, described deflection portion extends with spoke angle relative to the radial direction of described rotor core, described spoke angle is greater than 30 °.
Present invention also offers a kind of motor comprising stator and rotor as above.
The utility model is based on following idea: the radial direction transmission connection exterior section of rotor core and the spoke of interior section being redesigned into the power between exterior section and interior section making to reduce rotor core.Each spoke in the spoke redesigned is the flexible spoke comprising the deflection portion extended along non-radial direction.The deflection portion of spoke makes the geometry of rotor core more flexible, thus reduces the power transmitted in radial directions between the exterior section and interior section of rotor core.Deflection portion allows each spoke portion to be out of shape when the inside of the surface ratio rotor of rotor is heated more very.
Further improving in the execution mode of the torque-transfer capability of shrink-fit rotor core and armature spindle between to make to improve to the cooling of the exterior section of rotor core by arranging multiple little cooling duct for the exterior section of rotor core, compare less large cooling duct, described multiple little cooling duct increases total film-cooled heat of cooling duct.This reduce the temperature difference between the exterior section of rotor core and interior section, thus improve the tightness of the shrink-fit in working order between lower rotor part core and armature spindle.In addition, the exterior section for rotor core arranges the rotational symmetry that multiple little cooling duct improves rotor core, even and if make also can realize the symmetrical of magnetic flux when cooling duct is located near rotor bar.
Advantage of the present utility model is: compared with situation about designing with the prior art with radial spoke, and the contact at the shrink-fit place between rotor core and armature spindle is less subject to the impact of the outer surface heating of rotor core.According in rotor of the present utility model, the force rate being radially directed towards outside be applied on the interior section of rotor core by the exterior section of rotor core is in working order less in known rotor.Therefore, lower this shrink-fit keeps its torque-transfer capability better than the shrink-fit of the known rotor with radial spoke in working order.This means to manufacture more untight shrink-fit and do not worry the lower separation in working order of this shrink-fit.
Accompanying drawing explanation
In more detail the utility model is described hereinafter with reference to accompanying drawing by means of preferred implementation, in the accompanying drawings:
Fig. 1 shows the rotor core according to execution mode of the present utility model when observing from the axial direction of rotor core,
Fig. 2 shows the enlarged drawing of a part for the rotor core of Fig. 1;
Fig. 3 to Fig. 9 shows the rotor core according to substituting execution mode of the present utility model;
Figure 10 shows the rotor core comprising in axial direction stacking multiple rotor sheets; And
Figure 11 shows rotor, and it is comprised the rotor core of Figure 10 and is attached to the armature spindle of rotor core by shrink-fit.
Embodiment
Fig. 1 shows rotor core 2a, the interior section 22a that this rotor core 2a has exterior section 21a and locates closer to the rotation of rotor core 2a than this exterior section 21a.Exterior section 21a is attached to interior section 22a by multiple spoke 6a.Exterior section 21a comprises multiple cooling duct 4a, and each cooling duct all in axial direction extends through rotor core 2a and is suitable for the flowing of the coolant of such as air and so on.Interior section 22a comprises central aperture 25a, and central aperture 25a is suitable for receiving armature spindle rotor core 2a is connected to armature spindle by shrink-fit.
Shrink-fit is a kind of known technology, in this technology, realizes interference engagement by the relative size change after assembling.Can by heating rotor core before assembly and the shrink-fit allowing rotor core return to ambient temperature after assembling to realize between rotor core and armature spindle.This shrink-fit make use of thermal expansion.
Each spoke in spoke 6a includes deflection portion 61a, deflection portion 61a relative to the radial direction of rotor core 2a with spoke angle [alpha]
aextend.Spoke angle [alpha]
ameasure relative to the center line of spoke 6a.Depend on the position measuring spoke angle, spoke angle [alpha]
afor about 80 °.At the inner end place of spoke 6a, spoke angle [alpha]
abe in its maximum.The inner end of spoke 6a is the end being adjacent to the interior section 22a of rotor core 2a locate.The outer end of spoke 6a is the end being adjacent to the exterior section 21a of rotor core 2a locate.
The flexibility of the corresponding spoke of effect length in deflection portion.In FIG, the length of deflection portion 61a is about 0.07 times of the diameter of rotor core 2a.In substituting execution mode, the length in deflection portion is in the scope of 0.04 times to 0.15 times of the diameter of rotor core.In some embodiments, spoke comprises more than one deflection portion, makes the total length of the flexible portion of spoke be the summation of the length in described more than one deflection portion.The example of this execution mode is depicted in Fig. 6.
Comprising the duration of work of motor of rotor core 2a, the exterior section 21a heating of rotor core 2a is also expanded.But the power outside only less sensing is applied on the interior section 22a of rotor core 2a by described multiple spoke 6a.Due to the configuration of spoke 6a, therefore, spoke 6a has the good torque-transfer capability between the exterior section 21a and the interior section 22a of rotor core 2a of rotor core 2a, and spoke 6a only transmits less power in radial directions simultaneously.Spoke 6a to provide between the exterior section 21a of rotor core 2a and the interior section 22a of rotor core 2a very flexible connection in radial directions.Due to flexible spoke 6a, therefore, the thermal expansion of the exterior section 21a of rotor core 2a is very little on the impact of the torque-transfer capability of the shrink-fit between rotor core 2a and armature spindle.
The width of spoke is selected such that spoke has required flexibility, thus makes the thermal expansion of the exterior section of rotor core can not affect the torque-transfer capability of the shrink-fit between rotor core and armature spindle too much.The number of spoke is selected such that described multiple spoke can transmit enough moments of torsion between the exterior section of rotor core and the interior section of rotor core.
Described multiple cooling duct comprises first group of cooling duct 41a of rotation first distance apart from rotor core 2a, the 3rd group of cooling duct 43a apart from second group of cooling duct 42a of the rotation second distance of rotor core 2a and rotation the 3rd distance apart from rotor core 2a.Often organizing cooling duct is all positioned to different apart from the distance of the rotation of rotor core from all the other cooling duct groups.First group of cooling duct 41a is outermost group, and the 3rd group of cooling duct 43a is the group of inner side, and second group of cooling duct 42a is in radial directions between first group of 41a and the 3rd group 43a.
The cross section of each cooling duct in described multiple cooling duct 4a is circular, and the diameter of each cooling duct in described multiple cooling duct 4a is less than 0.03 times of the diameter of rotor core 2a.In substituting execution mode, the diameter of each cooling duct in described multiple cooling duct is 0.06 times or less of the diameter of rotor core.In addition, in substituting execution mode, the cross section of cooling duct can have the shape being different from circle, such as oval or polygonal shape.In addition, in some embodiments, independent cooling duct is removed, and realizes the cooling of rotor core by the coolant gap flowed through between spoke.In the execution mode comprising independent cooling duct, the number of cooling duct and the number of cooling duct group can change.In addition, one group of cooling duct can have the cooling duct organizing cooling duct different size with another.
Fig. 2 shows the enlarged drawing of a part of rotor core 2a.Fig. 2 is provided with arrow 5a1 to 5a3, and arrow 5a1 to 5a3 depicts because of the temperature difference between the exterior section 21a of rotor core 2a and interior section 22a and the direction of the power caused.Fig. 2 shows the power existed in deflection portion 61a and extends along the direction parallel with deflection portion 61a.This power is tangential substantially, and therefore this power makes exterior section 21a slightly rotate relative to interior section 22a.
Rotor core 2a comprises multiple rotor 23a on their outer circumference.Each rotor 23a is suitable for receiving corresponding rotor bar (not described).
Fig. 3 to Fig. 9 shows the rotor core according to substituting execution mode of the present utility model.The Reference numeral of Fig. 3 to Fig. 9 is corresponding with the Reference numeral of Fig. 1, and specific feature is in these figures used in, and Reference numeral that beginning has a common numerical portion represents.Each Reference numeral also comprises the letter identifying involved execution mode, and the Reference numeral of Fig. 1 comprises letter " a ", and the Reference numeral of Fig. 3 to Fig. 9 comprises letter " b " respectively to letter " h ".
In Fig. 3 to Fig. 9, the outer surface of each rotor core is all depicted as smooth circular surface.But the design of each rotor core of Fig. 3 to Fig. 9 can be provided with the rotor similar with the rotor described in Fig. 1 to Fig. 2.In addition, all rotor core designs of Fig. 1 to Fig. 9 may be used for being permitted in eurypalynous motor, but not only in induction machine.The shape of the outer surface of rotor core is determined according to the requirement of involved motor type, but the design of the spoke of rotor core and interior section can remain unchanged.
Fig. 1 to Fig. 9 shows the configuration of spoke in various embodiments and size changes, and spoke angle [alpha] is also like this.Under normal conditions, spoke angle [alpha] is greater than 30 °.
Spoke can be straight or curved element.In addition, spoke can not only have straight portion but also have turn of bilge.In the embodiment of figure 1, each deflection portion 61a linearly shape extension.In the execution mode of Fig. 7, whole spoke 6f linearly shape extends.In the embodiment of fig. 6, each spoke 6e is curved member, and it has the exterior section 21e of connection rotor core 2e and the wide U-shaped configuration of interior section 22e.Therefore, deflection portion 61e1 and 61e2 is also curved member, and spoke angle [alpha]
a1and α
a2non-constant in the gamut in deflection portion.
Under normal conditions, each spoke connected in the interior section of rotor core and the spoke of exterior section includes at least one the deflection portion extended with spoke angle relative to the radial direction of rotor core.In the execution mode of Fig. 5, each spoke 6d all has two branch 6d1 and 6d2 adjacent with the interior section of rotor core 2d.Branch 6d1 and 6d2 is about the radial direction mirror images of each other of rotor core 2d.Branch 6d1 comprises radial direction relative to rotor core 2d with spoke angle [alpha]
d1the deflection portion 6d1 extended.Spoke angle [alpha]
d1it is about 90 ° at the side direction exterior section place of branch 6d1.Herein, side direction exterior section be branch 6d1 locate apart from the radial centre lines part farthest of spoke 6d.Due to the symmetry of branch, branch 6d2 comprises radial direction relative to rotor core 2d with spoke angle [alpha]
d2the deflection portion 6d2 extended.Spoke angle [alpha]
d2in the side direction exterior section of branch 6d2, be about 90 °.
In Figure 5, branch 6d1 and 6d2 defines the chamber 7d between the interior section 22d and spoke 6d of rotor core 2d.Chamber 7d is symmetrical about the radial direction of rotor core 2d.The radial dimension of chamber 7d has its maximum at the axis of symmetry place of chamber 7d, and the radial dimension of chamber 7d outwards reduces from the axis of symmetry.Herein, radial dimension refers to the size parallel with the radial direction of rotor core.
Chamber 7d provides flexibility between the interior section 22d and spoke 6d of rotor core 2d.Chamber 7d is suitable for changing its size and dimension in response to the radial load between the exterior section 21d of rotor core 2d and interior section 22d.Therefore, spoke 6d is also suitable for changing its shape in response to the radial load between the exterior section 21d of rotor core 2d and interior section 22d.This makes spoke 6d become flexure member---and the ability of this flexure member radially transmitting force is more weak.Therefore, the temperature difference between the exterior section 21d of rotor core 2d and interior section 22d can not the size of central aperture 25d of appreciable impact rotor core 2d.
The rotor core 2g of Fig. 8 has two kinds of spokes, makes each the first spoke 6g1 relative to the radial direction of rotor core 2g with spoke angle [alpha]
g1extend, and each the second spoke 6g2 relative to the radial direction of rotor core 2g with spoke angle [alpha]
g2stretch.Spoke angle [alpha]
g1and α
g2the identical but symbol of absolute value contrary, make the first spoke 6g1 and the second spoke 6g2 about the radial direction mirror images of each other of rotor core 2g.
Fig. 9 shows rotor core 2h, and the exterior section 21h of this rotor core 2h is connected to interior section 22h by multiple spoke 6h1 and 6h2.Each spoke 6h1 includes outer deflection portion 61h11 and interior deflection portion 61h12.The exterior section 21h of outer deflection portion 61h11 and rotor core 2h is adjacent to locate, and the interior section 22h of interior deflection portion 61h12 and rotor core 2h is adjacent to locate.
Outer deflection portion 61h11 relative to the radial direction of rotor core 2h with spoke angle [alpha]
h11extend.Spoke angle [alpha]
h11for about 60 °.Interior deflection portion 61h12 relative to the radial direction of rotor core 2h with spoke angle [alpha]
h12extend.Spoke angle [alpha]
h12for about 90 °.Spoke angle [alpha]
h11and α
h12there is contrary symbol.
Spoke 6h1 and 6h2 is about the radial direction mirror images of each other of rotor core 2h.Each spoke 6h1 is all connected to adjacent spoke 6h2 by its mid portion between outer deflection portion 61h11 and interior deflection portion 61h12.In addition, each spoke 6h1 is all adjacent to the exterior section of locating by the exterior section 21h of itself and rotor core 2h and is connected to another adjacent spoke 6h2.
Rotor core 2h interior section 22h be connected in be provided with chamber 7h between deflection portion 61h12 and 61h22.Chamber 7h is symmetrical about the radial direction of rotor core 2h.Chamber 7h is along roughly tangential direction extension.Herein, tangential direction refers to the tangential direction of rotor core.Radial dimension substantial constant in whole chamber 7h of chamber 7h.Chamber 7h is suitable for changing its size and dimension in response to the radial load between the exterior section 21h of rotor core 2h and interior section 22h.
Each rotor core in the rotor core of Fig. 1 to Fig. 9 all may be used in the motor of the azimuth thruster of boats and ships.In one embodiment, comprise and be more than or equal to 100kW according to the rated power of the motor of rotor of the present utility model.
In one embodiment, in axial direction stacking multiple rotor sheets are comprised according to rotor core of the present utility model.Arbitrary rotor core in the rotor core of Fig. 1 to Fig. 9 can be configured to this rotor core.
The general structure of the rotor core comprising in axial direction stacking multiple rotor sheets is depicted in Figure 10.Figure 11 shows rotor, and it is comprised the rotor core 2i of Figure 10 and is connected to the armature spindle 3i of rotor core 2i by shrink-fit.Rotor core 2i comprises in axial direction stacking rotor sheet RS1, RS2, RS3, RS4, RS5 and RS6.Each in rotor sheet RS1 to RS6 is made by punching course by metallic plate.Each in rotor sheet RS1 to RS6 is all identical with remaining rotor sheet.
Be apparent that to those skilled in the art, thought of the present utility model can be implemented in every way.The utility model and execution mode thereof are not limited to above-mentioned example, but can change within the scope of the claims.
Claims (8)
1. the rotor for motor, described rotor comprises rotor core (2a), described rotor core (2a) has exterior section (21a) and is positioned to than the interior section (22a) of described exterior section (21a) closer to the rotation of described rotor core (2a), described exterior section (21a) is connected to described interior section (22a) by multiple spoke (6a), and described rotor core (2a) is suitable for being connected to armature spindle by shrink-fit, it is characterized in that, each spoke in described spoke (6a) includes at least one deflection portion (61a), described deflection portion (61a) relative to the radial direction of described rotor core (2a) with spoke angle (α
a) extend, described spoke angle is greater than 30 °.
2. rotor according to claim 1, it is characterized in that, described rotor comprises multiple cooling ducts (4a) of the described exterior section (21a) being arranged in described rotor core, and each cooling duct in described multiple cooling duct (4a) all in axial direction extends through described rotor core (2a) and is suitable for the flowing of coolant.
3. rotor according to claim 2, it is characterized in that, described multiple cooling duct (4a) comprises second group of cooling duct (42a) of first group of cooling duct (41a) apart from rotation first distance of described rotor core (2a) and the described rotation second distance apart from described rotor core (2a), and the diameter of each cooling duct in described multiple cooling duct (4a) is 0.06 times or less of the diameter of described rotor core (2a).
4. the rotor according to any one in claims 1 to 3, is characterized in that, described rotor is the rotor for induction machine.
5. the rotor according to any one in claims 1 to 3, is characterized in that, described rotor core (2i) comprises in axial direction stacking multiple rotor sheets (RS1, RS2, RS3, RS4, RS5, RS6).
6. rotor according to claim 5, is characterized in that, described rotor comprises the armature spindle (3i) being connected to described rotor core (2i) by shrink-fit.
7. comprise a motor for rotor and stator, it is characterized in that, the described rotor of described motor is the rotor according to any one in claims 1 to 3.
8. motor according to claim 7, is characterized in that, the rated power of described motor is more than or equal to 100kW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490698.XU CN204810012U (en) | 2015-06-30 | 2015-06-30 | A motor that is used for rotor of motor and includes this rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490698.XU CN204810012U (en) | 2015-06-30 | 2015-06-30 | A motor that is used for rotor of motor and includes this rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204810012U true CN204810012U (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520490698.XU Active CN204810012U (en) | 2015-06-30 | 2015-06-30 | A motor that is used for rotor of motor and includes this rotor |
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| Country | Link |
|---|---|
| CN (1) | CN204810012U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016693A (en) * | 2016-06-24 | 2016-10-12 | 沈阳永磁电机制造有限公司 | Integrated permanent-magnet eddy current heater |
| CN106329765A (en) * | 2015-06-30 | 2017-01-11 | Abb技术有限公司 | Rotor used for a motor and motor comprising same |
| TWI614084B (en) * | 2016-09-01 | 2018-02-11 | Shaft core heat sealing machine and heat sealing method thereof |
-
2015
- 2015-06-30 CN CN201520490698.XU patent/CN204810012U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329765A (en) * | 2015-06-30 | 2017-01-11 | Abb技术有限公司 | Rotor used for a motor and motor comprising same |
| CN106016693A (en) * | 2016-06-24 | 2016-10-12 | 沈阳永磁电机制造有限公司 | Integrated permanent-magnet eddy current heater |
| CN106016693B (en) * | 2016-06-24 | 2021-07-02 | 沈阳永磁电机制造有限公司 | Integrated permanent magnet eddy current heater |
| TWI614084B (en) * | 2016-09-01 | 2018-02-11 | Shaft core heat sealing machine and heat sealing method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180606 Address after: Baden, Switzerland Patentee after: ABB TECHNOLOGY LTD. Address before: Zurich Patentee before: ABB T & D Technology Ltd. |
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| TR01 | Transfer of patent right |