CN220421562U - Stator oil immersed cooling motor - Google Patents
Stator oil immersed cooling motor Download PDFInfo
- Publication number
- CN220421562U CN220421562U CN202321651459.9U CN202321651459U CN220421562U CN 220421562 U CN220421562 U CN 220421562U CN 202321651459 U CN202321651459 U CN 202321651459U CN 220421562 U CN220421562 U CN 220421562U
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- stator
- shielding
- oil
- cooling
- flange
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- 238000001816 cooling Methods 0.000 title claims abstract description 61
- 238000004804 winding Methods 0.000 claims abstract description 31
- 230000002093 peripheral effect Effects 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Motor Or Generator Cooling System (AREA)
Abstract
The utility model relates to the technical field of motor cooling and discloses a stator oil immersed cooling motor, which comprises a casing, a rotor and a stator, wherein a shielding sleeve is arranged between the rotor and the stator, shielding flanges are arranged outside stator windings at two ends of the stator, and the shielding flanges are arranged at two ends of the shielding sleeve to form an oil passing cavity by matching with the outer peripheral surface of the shielding sleeve and the inner peripheral surface of the casing; the casing is provided with a cooling oil inlet and a cooling oil outlet at the positions corresponding to the two stator windings respectively, and the tooth notch and the yoke of the stator core are provided with at least one through axial oil through hole along the axial direction. Therefore, the cooling oil can be directly contacted with the stator winding, and heat of the stator winding is effectively taken away; meanwhile, the cooling oil can directly flow through the tooth notch and the yoke of the stator core through the axial oil through holes, so that the internal heat and the external Zhou Fushe heat of the stator core are effectively taken away, and the cooling effect is good. In addition, through the arrangement of the oil cavity, cooling oil can be effectively prevented from entering the rotor, and the loss of the high-speed rotation of the rotor with liquid is avoided.
Description
Technical Field
The utility model relates to the technical field of motor cooling, in particular to a stator oil-immersed cooling motor.
Background
With the increase of the power density requirement of the motor, the motor is required to be smaller and smaller in size due to the high torque density, so that heat generated by the motor is concentrated, and the motor is difficult to cool by conventional air cooling and air cooling modes.
When the permanent magnet motor works, heat is mainly concentrated at the stator core, the stator winding, the rotor core and the magnetic steel, and the heat productivity of the stator core and the stator winding is usually the largest. The existing oil-cooled motor is provided with a cooling oil duct on a stator winding at the end part of a stator or sprays and cools the stator winding, and although the heat of the stator winding can be effectively taken away, the heat in the middle part of a stator core and the heat at a magnetic steel part cannot be taken away, the cooling effect is limited, and the magnetic steel is easy to overheat and lose magnetism.
In summary, how to effectively cool the stator core and the stator winding is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, an object of the present utility model is to provide a stator oil immersed cooling motor, in which cooling oil can directly contact with a stator winding and can flow through teeth and yokes of a stator, which are tightly attached, through axial through holes, so that a stator core and the stator winding can be effectively cooled.
In order to achieve the above object, the present utility model provides the following technical solutions:
the stator oil immersed cooling motor comprises a shell, a rotor and a stator, wherein a shielding sleeve is arranged between the rotor and the stator, shielding flanges are arranged outside stator windings at two ends of the stator, and the shielding flanges are arranged at two ends of the shielding sleeve to form an oil passing cavity by matching with the outer peripheral surface of the shielding sleeve and the inner peripheral surface of the shell;
the casing is provided with a cooling oil inlet and a cooling oil outlet at positions corresponding to the two stator windings respectively, and the tooth notch and the yoke of the stator core are provided with at least one through axial oil through hole along the axial direction.
Preferably, the shielding flange comprises a large shielding flange and a small shielding flange sleeved outside the shielding sleeve, and a shielding sleeve mounting groove used for being clamped with the end part of the shielding sleeve is formed in the end part of the large shielding flange.
Preferably, the inner side surface of the small shielding flange is provided with at least one sealing groove for installing a sealing ring.
Preferably, the outer circumferential surface of the large shielding flange is welded with the inner circumferential surface of the casing, and the outer circumferential surface of the small shielding flange is welded with the inner circumferential surface of the casing.
Preferably, the shielding sleeve comprises a carbon fiber shielding sleeve, and the carbon fiber shielding sleeve is glued with the shielding flange.
According to the stator oil immersed cooling motor provided by the utility model, the shielding flange and the shielding sleeve are matched with the inner peripheral surface of the casing to form the oil passing cavity through which cooling oil flows, the cooling oil can enter the oil passing cavity from the cooling oil inlet of the casing, flow into the axial oil through holes after flowing through the stator windings, cool the inside of the stator core by utilizing the axial oil through holes, and finally flow out from the cooling oil outlet after flowing through the stator windings on the other side.
Therefore, the cooling oil is directly contacted with the stator winding, so that the heat of the stator winding can be effectively taken away, meanwhile, the cooling oil directly flows through the tooth notch and the yoke of the stator core through the axial oil through holes, the heat inside the stator core and the heat outside Zhou Fushe can be effectively taken away, and the cooling effect is good.
In addition, through the arrangement of the oil cavity, cooling oil can be effectively prevented from entering the rotor, and the loss of the high-speed rotation of the rotor with liquid is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic cross-sectional view of a specific embodiment of a stator oil immersed cooling motor provided by the utility model;
fig. 2 is a schematic cross-sectional view of a cross-section of a stator core.
In fig. 1-2:
1 is a shell, 11 is a cooling oil inlet, 12 is a cooling oil outlet, 21 is a stator core, 211 is an axial oil through hole, 22 is a stator winding, 3 is a rotor, 4 is a shielding sleeve, and 5 is a shielding flange.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The core of the utility model is to provide a stator oil immersed cooling motor, wherein cooling oil can be directly contacted with a stator winding and can flow through teeth and yokes which are tightly attached to a stator through axial through holes, so that the stator core and the stator winding can be effectively cooled.
Referring to fig. 1-2, fig. 1 is a schematic cross-sectional view of a specific embodiment of a stator oil immersed cooling motor provided by the present utility model; fig. 2 is a schematic cross-sectional view of a cross-section of a stator core.
The utility model provides a stator oil immersed cooling motor, which comprises a shell 1, a rotor and a stator 3, wherein a shielding sleeve 4 is arranged between the rotor and the stator 3, shielding flanges 5 are arranged outside stator windings 22 at two ends of the stator, and the shielding flanges 5 are arranged at two ends of the shielding sleeve 4 so as to form an oil passing cavity by matching with the outer peripheral surface of the shielding sleeve 4 and the inner peripheral surface of the shell 1;
the casing 1 is provided with a cooling oil inlet 11 and a cooling oil outlet 12 at two corresponding stator windings 22, respectively, and the tooth notch and the yoke of the stator core 21 are provided with at least one through axial oil through hole 211 along the axial direction.
Wherein, shielding flange 5 and shield cover 4 are used for cooperating the inner peripheral surface of casing 1 to form the oil pocket to prevent the cooling oil from getting into in the rotor, and then avoided the rotor high-speed rotation to take the liquid to increase the loss.
Because the shielding flange 5 and the shielding sleeve 4 are immersed in the cooling oil, the materials of the shielding flange and the shielding sleeve have good oil resistance in order to ensure the tightness and the service life of the shielding flange and the shielding sleeve.
For example, the shielding flange 4 can be set to be a metal flange, the shielding sleeve 4 can be set to be a carbon fiber shielding sleeve, the carbon fiber shielding sleeve is glued with the shielding flange 4, the connection is convenient, friction between the shielding sleeve 4 and the rotor 3 can be reduced, and the service lives of the rotor 3 and the shielding sleeve 4 can be prolonged.
Of course, the shielding sleeve 4 can also be a metal shielding sleeve, and the metal shielding sleeve is welded with the shielding flange 4, so that the connection stability is stronger.
The cooling oil inlet 11 and the cooling oil outlet 12 are respectively arranged corresponding to the stator windings 22 at the two ends of the stator, so that the cooling oil can be directly contacted with the stator windings 22, and heat of the stator windings 22 is effectively taken away in a thermal contact mode.
The tooth portion and the yoke portion of the stator core 21 are both provided with the axial oil through holes 211, the axial oil through holes 211 are arranged in the axial direction of the stator core 21, and when cooling oil flows through the axial oil through holes 211, heat inside the stator core 21 and heat radiated in the outer circumference of the stator core can be effectively carried away, so that effective cooling of the stator core 21 is realized.
The axial oil holes 211 may be configured as round holes, waist-shaped holes, etc., as shown in fig. 2, and specific numbers, shapes, sizes and positions of the axial oil holes 211 are determined after strength checking calculation according to cooling requirements in actual production, which are not described herein.
In order to ensure structural strength of the stator core 21, the axial oil hole 211 is provided, and then the notch height of the tooth portion should be increased as appropriate.
In the present embodiment, the cooling oil inlet 11 and the cooling oil outlet 12 cooperate with the axial oil through holes 211 so that the cooling oil can circulate between the outside-stator winding 22-stator core 21-another stator winding 22-the outside, and effective cooling of the stator core 21 and the stator winding 22 is achieved.
In addition, the shielding flange 5 and the shielding sleeve 4 are matched with the inner peripheral surface of the shell 1 to form an oil passing cavity, so that cooling oil can be effectively prevented from entering the rotor 3, and the increased loss of liquid carrying caused by high-speed rotation of the rotor 3 is avoided.
On the basis of the above embodiment, the connection mode of the shielding flange 5 and the shielding sleeve 4 is defined, the shielding flange 5 includes a large shielding flange and a small shielding flange sleeved outside the shielding sleeve 4, and the end part of the large shielding flange is provided with a shielding sleeve mounting groove for being clamped with the end part of the shielding sleeve 4.
Referring to fig. 1, positioning steps are respectively arranged at two ends of the casing 1, so that the large shielding flange and the small shielding flange can be tightly abutted against the positioning steps of the casing 1 by using a bolt connection mode and the like, and the positioning steps are used for axially positioning the shielding flange 5 to prevent the shielding flange 5 from axial movement;
one end of the shielding sleeve 4 is clamped in a shielding sleeve mounting groove of the large shielding flange, and the large shielding flange is used for axially positioning the shielding sleeve 4 to prevent the shielding sleeve from axial movement;
the small shielding flange can be in interference connection with the shielding sleeve 4, and at least one sealing groove for installing a sealing ring can be arranged on the inner side surface of the small shielding flange so as to ensure the tightness of the joint of the small shielding flange and the shielding sleeve 4 and prevent cooling oil from flowing out of a gap between the small shielding flange and the shielding sleeve 4.
Preferably, the outer circumferential surface of the large shielding flange is welded with the inner circumferential surface of the casing 1, and the outer circumferential surface of the small shielding flange is welded with the inner circumferential surface of the casing 1, so that the axial positions of the two shielding flanges 5 can be effectively fixed, and the axial movement of the two shielding flanges can be prevented.
Of course, in order to facilitate the disassembly and maintenance of the shielding flange 4, a sealing groove for installing a sealing ring may be provided on the outer circumferential surface of the shielding flange 4, and the axial position of the shielding flange 4 may be limited by the sealing ring.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The stator oil immersed cooling motor provided by the utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
Claims (5)
1. The stator oil immersed cooling motor comprises a shell (1), a rotor (3) and a stator, and is characterized in that a shielding sleeve (4) is arranged between the rotor (3) and the stator, shielding flanges (5) are arranged outside stator windings (22) at two ends of the stator, and the shielding flanges (5) are arranged at two ends of the shielding sleeve (4) so as to be matched with the outer peripheral surface of the shielding sleeve (4) and the inner peripheral surface of the shell (1) to form an oil passing cavity;
the casing (1) is respectively provided with a cooling oil inlet (11) and a cooling oil outlet (12) corresponding to the two stator windings (22), and the tooth notch and the yoke of the stator core (21) are respectively provided with at least one through axial oil through hole (211) along the axial direction.
2. The stator oil immersed cooling motor according to claim 1, wherein the shielding flange (5) comprises a large shielding flange and a small shielding flange sleeved outside the shielding sleeve (4), and a shielding sleeve mounting groove for being clamped with the end part of the shielding sleeve (4) is formed in the end part of the large shielding flange.
3. The stator oil immersed cooling motor of claim 2, wherein the inner side of the small shielding flange is provided with at least one sealing groove for installing a sealing ring.
4. The stator oil immersed cooling motor according to claim 2, wherein an outer peripheral surface of the large shielding flange is welded to an inner peripheral surface of the casing (1), and an outer peripheral surface of the small shielding flange is welded to an inner peripheral surface of the casing (1).
5. A stator oil filled cooling electric machine according to any of claims 1-4, characterized in that the shielding sleeve (4) comprises a carbon fiber shielding sleeve glued to the shielding flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321651459.9U CN220421562U (en) | 2023-06-27 | 2023-06-27 | Stator oil immersed cooling motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321651459.9U CN220421562U (en) | 2023-06-27 | 2023-06-27 | Stator oil immersed cooling motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220421562U true CN220421562U (en) | 2024-01-30 |
Family
ID=89643383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321651459.9U Active CN220421562U (en) | 2023-06-27 | 2023-06-27 | Stator oil immersed cooling motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220421562U (en) |
-
2023
- 2023-06-27 CN CN202321651459.9U patent/CN220421562U/en active Active
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