CN117424366B - Cooling structure and motor with same - Google Patents
Cooling structure and motor with same Download PDFInfo
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- CN117424366B CN117424366B CN202311746379.6A CN202311746379A CN117424366B CN 117424366 B CN117424366 B CN 117424366B CN 202311746379 A CN202311746379 A CN 202311746379A CN 117424366 B CN117424366 B CN 117424366B
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- flow
- flow passage
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- 238000001816 cooling Methods 0.000 title claims abstract description 232
- 238000004891 communication Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 abstract description 36
- 239000002826 coolant Substances 0.000 description 48
- 239000007788 liquid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a cooling structure and a motor with the same, wherein the cooling structure comprises a cooling part, and the cooling part is used for being assembled on a stator core; at least two first insulating tooth bodies are arranged on the cooling component, first tooth part cooling flow passages are formed in each first insulating tooth body, and each first insulating tooth body is respectively contacted with the first end face of each stator tooth of the stator core; and/or at least two second insulating tooth bodies are arranged on the cooling component, second tooth part cooling flow passages are formed in each second insulating tooth body, and each second insulating tooth body is respectively contacted with the second end face of each stator tooth. According to the invention, when the cooling structure is applied to the motor, after the stator winding is wound, the two ends of the stator winding are respectively and directly contacted with the first insulating tooth body and the second insulating tooth body, and when cooling media circulate in the first tooth cooling flow passage and the second tooth cooling flow passage, the ends of the stator winding can be directly cooled, and the cooling efficiency is higher.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a cooling structure and a motor with the cooling structure.
Background
With the continuous improvement of the motor performance and the continuous increase of the power density, the heat productivity of the motor is obviously increased, the motor load capacity is weakened due to the excessively high motor temperature rise, the motor material characteristics are destroyed, and if the motor works in a high-temperature environment for a long time, the risks of insulation layer melting failure and permanent magnet demagnetization are faced, so that the operation stability of the motor and the service life of the motor are seriously influenced. Especially, the torque demand of the motor is increased, the copper consumption is obviously improved, the winding becomes a main heat source of the motor, and the two ends of the motor are the parts which are most required to dissipate heat.
At present, the cooling mode of the motor is divided into air cooling and water cooling. The water cooling mode has the advantages of good cooling effect, lower noise than air cooling, and the like, so that the water cooling motor is widely applied to various industries. The existing water-cooled motor mostly adopts a shell water channel, a spiral water channel is arranged in the shell, and the spiral water channel is arranged in a unidirectional extending mode along the axial direction of the motor. In the process that the cooling liquid flows along the spiral water channel, the temperature gradually rises, and in the extending direction of the water channel, the cooling water has a temperature rising gradient, so that the cooling water temperatures at the front end and the rear end of the motor are inconsistent, the water temperature at one end part of the motor is higher, the water channel of the shell is not in direct contact with the heat source at the end part, and the timely cooling of the end part of the motor winding under the working condition of large torque cannot be ensured.
In the existing motor, although the cooling structure is also arranged, the cooling structure is not in direct contact with the end part of the winding, and the end part of the winding is the part with the largest heating value, so that the cooling efficiency is lower.
Disclosure of Invention
Therefore, the invention provides a cooling structure, which can solve the technical problem that the cooling structure in the existing motor is not in direct contact with the end part of a winding, so that the cooling efficiency is lower.
In order to solve the above problems, the present invention provides a cooling structure comprising: comprises a cooling part for fitting on a stator core having at least two stator teeth; the cooling component is provided with at least two first insulating tooth bodies, the first insulating tooth bodies are distributed at intervals along the circumferential direction of the cooling component, the first insulating tooth bodies point to the radial inner side of the cooling component, first tooth part cooling flow passages are formed in the first insulating tooth bodies, and when the cooling component is assembled on a stator core, the first insulating tooth bodies are respectively contacted with the first end faces of the stator teeth; at least two second insulating tooth bodies are arranged on the cooling component, the second insulating tooth bodies are distributed at intervals along the circumferential direction of the cooling component, the second insulating tooth bodies point to the radial inner side of the cooling component, second tooth part cooling flow passages are formed in the second insulating tooth bodies, and when the cooling component is assembled on a stator core, the second insulating tooth bodies are respectively contacted with the second end surfaces of the stator teeth; the cooling member includes a main body portion in which the stator core is accommodated and with which an outer circumferential surface of the stator core is in contact, the main body portion having a main body cooling flow passage formed therein; each first insulating tooth body is positioned on the main body part, each first tooth part cooling flow passage is communicated with the main body cooling flow passage, each second insulating tooth body is positioned on the main body part, and each second tooth part cooling flow passage is communicated with the main body cooling flow passage; the main body cooling flow passage comprises first circumferential flow passages, the first circumferential flow passages extend along the circumferential direction of the cooling component, each first tooth part cooling flow passage is communicated with the first circumferential flow passage, the main body cooling flow passage further comprises second circumferential flow passages, each second tooth part cooling flow passage extends along the circumferential direction of the cooling component and is communicated with the second circumferential flow passage, the main body cooling flow passage further comprises drainage flow passages, and two ends of each drainage flow passage are respectively communicated with the first circumferential flow passage and the second circumferential flow passage.
In some embodiments, the first circumferential flow channel includes a plurality of sections of first connecting flow channels that are independent of each other, a first opening and a second opening are formed at two ends of each of the first tooth cooling flow channels, and the first tooth cooling flow channel is respectively communicated with two adjacent sections of first connecting flow channels through the first opening and the second opening.
In some embodiments, the second circumferential flow channel includes a plurality of sections of second connecting flow channels that are independent of each other, each of the second tooth cooling flow channels has a third opening and a fourth opening, and the second tooth cooling flow channel communicates with two adjacent sections of second connecting flow channels through the third opening and the fourth opening, respectively.
In some embodiments, the flow-directing channel comprises a first axial channel extending in an axial direction of the cooling component, the first circumferential channel having a first inlet end and a first outlet end, the second circumferential channel having a second inlet end and a second outlet end, the first axial channel having ends respectively meeting the first outlet end of the first circumferential channel and the second inlet end of the second circumferential channel.
In some embodiments, the main body cooling flow passage further comprises a plurality of second axial flow passages and a plurality of third circumferential flow passages, each of the second axial flow passages is distributed at intervals along the circumferential direction of the cooling component, each of the third circumferential flow passages is distributed at intervals along the axial direction of the cooling component, each of the third circumferential flow passages is in alternating communication with each of the second axial flow passages to form a combined flow passage having a third inlet end and a third outlet end, and the second outlet end is connected with the third inlet end.
In some embodiments, the drainage flow channel includes a first oblique flow channel, the first oblique flow channel is disposed obliquely with respect to an axial direction of the cooling component, and two ends of the first oblique flow channel are respectively connected with a first outflow end of the first circumferential flow channel and a second inflow end of the second circumferential flow channel.
In some embodiments, the main cooling flow passage further includes a plurality of second diagonal flow passages and a plurality of third circumferential flow passages, each of the second diagonal flow passages being spaced apart along a circumferential direction of the cooling member, each of the third circumferential flow passages being spaced apart along an axial direction of the cooling member, each of the third circumferential flow passages being in alternating communication with each of the second diagonal flow passages, each of the combined flow passages formed by the alternating communication of each of the third circumferential flow passages with each of the second diagonal flow passages having a fourth inlet end and a fourth outlet end, the second outlet end being contiguous with the fourth inlet end.
In some embodiments, the cooling member has a plurality of slits formed therein, each slit extending through the cooling member.
The invention also provides a motor which comprises the cooling structure.
The cooling structure and the motor with the cooling structure provided by the invention have the following beneficial effects:
when the cooling structure of this application is applied to the motor, each first insulating tooth body of cooling part contacts with the first terminal surface of each stator tooth respectively, each second insulating tooth body of cooling part contacts with the second terminal surface of each stator tooth respectively, and be formed with first tooth portion cooling runner in the first insulating tooth body, be formed with second tooth portion cooling runner in the second insulating tooth body, after winding up stator winding, two tip direct and first insulating tooth body, the contact of second insulating tooth body respectively of stator winding, when the interior coolant medium that circulates of first tooth portion cooling runner and second tooth portion cooling runner, can directly cool off stator winding's tip, cooling efficiency is higher, guarantee the motor under the heavy torque operating mode, not influenced by the heat of winding tip sharp-rise. Meanwhile, the original insulating framework of the motor can be omitted by adopting the cooling structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.
Fig. 1 is a schematic view showing a structure in which a cooling structure according to an embodiment of the present invention is assembled to a stator core;
FIG. 2 is a schematic diagram of a cooling structure according to an embodiment of the present invention;
FIG. 3 is a first partial schematic view of a cooling structure according to an embodiment of the present invention;
FIG. 4 is a second partial schematic view of a cooling structure according to an embodiment of the present invention;
FIG. 5 is an expanded view of the first internal cooling flow path of the cooling structure according to the embodiment of the present invention;
FIG. 6 is an expanded view of the second internal cooling flow path of the cooling structure according to the embodiment of the present invention;
FIG. 7 is an expanded view of the third internal cooling flow path of the cooling structure according to the embodiment of the present invention.
The reference numerals are expressed as:
1. a cooling member; 11. a first insulated tooth; 12. a second insulating tooth; 13. a main body portion; 14. threading the fastener; 2. a stator core; 3. a first circumferential flow channel; 4. a second circumferential flow channel; 5. a first axial flow passage; 6. a second axial flow path; 7. a third circumferential flow channel; 8. a first diagonal flow path; 9. a second diagonal flow path; 15. a stator winding; 16. a liquid inlet pipe body; 17. a liquid outlet pipe body.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
Referring to fig. 1 to 7 in combination, according to an embodiment of the present invention, there is provided a cooling structure including: a cooling part 1, the cooling part 1 being for fitting on a stator core 2, the stator core 2 having at least two stator teeth; at least two first insulated tooth bodies 11 are arranged on the cooling part 1, the first insulated tooth bodies 11 are distributed at intervals along the circumferential direction of the cooling part 1, each first insulated tooth body 11 points to the radial inner side of the cooling part 1, a first tooth part cooling flow passage is formed in each first insulated tooth body 11, and when the cooling part 1 is assembled on the stator core 2, each first insulated tooth body 11 is respectively contacted with the first end face of each stator tooth; and/or, at least two second insulated tooth bodies 12 are arranged on the cooling component 1, the second insulated tooth bodies 12 are distributed at intervals along the circumferential direction of the cooling component 1, each second insulated tooth body 12 points to the radial inner side of the cooling component 1, a second tooth part cooling flow passage is formed in each second insulated tooth body 12, and each second insulated tooth body 12 is respectively contacted with the second end face of each stator tooth when the cooling component 1 is assembled on the stator core 2.
In this technical scheme, when the cooling structure is applied to the motor, each first insulating tooth body 11 of cooling part 1 contacts with the first terminal surface of each stator tooth respectively, each second insulating tooth body 12 of cooling part 1 contacts with the second terminal surface of each stator tooth respectively, and be formed with first tooth portion cooling runner in the first insulating tooth body 11, be formed with second tooth portion cooling runner in the second insulating tooth body 12, after winding around setting up stator winding 15, the both ends of stator winding 15 are direct with first insulating tooth body 11, second insulating tooth body 12 respectively, when the interior circulation cooling medium of first tooth portion cooling runner and second tooth portion cooling runner, can directly cool down the tip of stator winding 15, cooling efficiency is higher, guarantee that the motor is under the condition of big torque, not influenced by the heat that stator winding 15 tip increases suddenly. Meanwhile, the original insulating framework of the motor can be omitted by adopting the cooling structure.
Referring to fig. 1, the cooling member 1 includes a main body portion 13, the stator core 2 is accommodated in the main body portion 13, and an outer circumferential surface of the stator core 2 is in contact with the main body portion 13, and a main body cooling flow passage is formed in the main body portion 13; each first insulating tooth body 11 is positioned on the main body part 13, and each first tooth part cooling flow passage is communicated with the main body cooling flow passage; and/or, each second insulating tooth body 12 is positioned on the main body 13, and each second tooth cooling flow passage is communicated with the main body cooling flow passage.
In this embodiment, since the stator core 2 is accommodated in the main body portion 13 of the cooling component 1, and the outer circumferential surface of the stator core 2 is in contact with the main body portion 13, when the cooling medium flows in the main body cooling flow passage of the main body portion 13, the whole stator can be cooled, so that more heat of the motor is taken away rapidly, the temperature of the magnetic steel is reduced, the hidden danger of demagnetization is reduced, the operation reliability of the motor is increased, the whole operation of the motor is stable, and the power density of the motor is increased.
Referring to fig. 5 to 7 in combination, the main body cooling flow passage includes a first circumferential flow passage 3, the first circumferential flow passage 3 extending in the circumferential direction of the cooling member 1, and each of the first tooth cooling flow passages communicates with the first circumferential flow passage 3.
Specifically, the first circumferential flow channel 3 includes a plurality of sections of mutually independent first connecting flow channels, two ends of each first tooth cooling flow channel are respectively formed with a first opening and a second opening, and the first tooth cooling flow channels are respectively communicated with two adjacent sections of first connecting flow channels through the first opening and the second opening.
In this embodiment, each first tooth cooling channel is alternately connected with each first connecting channel, when the cooling medium flows in the first circumferential channel 3, the cooling medium can sequentially flow through each first tooth cooling channel, and under the condition that the cooling medium flows circularly, the fresh and dynamic cooling medium always flows in each first tooth cooling channel, so that poor fluidity of the cooling medium in each first tooth cooling channel is prevented, and the cooling efficiency is reduced. More importantly, when the cooling medium flows in from the first circumferential flow channels 3, the cooling medium can flow through the first tooth cooling flow channels preferentially, so that the cooling medium in a low-temperature state can cool the first end part of the stator winding 15 preferentially, then cool other parts of the stator, and the cooling efficiency of the winding end part is improved.
Referring to fig. 5-7 in combination, the body cooling gallery further includes a second perimeter Xiang Liudao, the second perimeter Xiang Liudao extending circumferentially of the cooling member 1, each second tooth cooling gallery in communication with the second perimeter Xiang Liudao.
Specifically, the second circumferential flow channel 4 includes a plurality of sections of second connecting flow channels that are independent of each other, each second tooth cooling flow channel has a third opening and a fourth opening, and the second tooth cooling flow channel is respectively communicated with two adjacent sections of second connecting flow channels through the third opening and the fourth opening.
In this technical scheme, each second tooth portion cooling runner and each section second connection runner are linked together in turn, and when flowing through the coolant in the second week Xiang Liudao, the coolant can flow through each second tooth portion cooling runner in proper order, and under the circumstances that coolant circulated, the interior circulation of each second tooth portion cooling runner is fresh dynamic coolant all the time, prevents that the coolant in each second tooth portion cooling runner from flowing poor, reduces cooling efficiency. More importantly, when the cooling medium flows in from the second periphery Xiang Liudao, the cooling medium can preferentially flow through the second tooth cooling flow passages, so that the cooling medium in a low-temperature state can preferentially cool the second end portion of the stator winding 15, then cool other portions of the stator, and the cooling efficiency of the winding end portion is improved.
More specifically, the main body cooling flow passage further comprises a drainage flow passage, and two ends of the drainage flow passage are respectively communicated with the first circumferential flow passage 3 and the second circumferential flow passage Xiang Liudao 4.
As shown in fig. 5 and 6, the drainage flow passage includes a first axial flow passage 5, the first axial flow passage 5 extends along the axial direction of the cooling component 1, the first circumferential flow passage 3 has a first inlet end and a first outlet end, the second circumferential flow passage Xiang Liudao has a second inlet end and a second outlet end, and both ends of the first axial flow passage 5 are respectively connected with the first outlet end of the first circumferential flow passage 3 and the second inlet end of the second circumferential flow passage 4.
In the present embodiment, the first axial flow passage 5 is used to communicate the first circumferential flow passage 3 with the second circumference Xiang Liudao. Especially when the service condition of motor is vertical, no matter cooling medium flows in by first circumference runner 3 or by second circumference runner 4, after cooling medium flows in proper order through each tooth portion cooling runner that is located same one end, under the effect of gravity, cooling medium all can flow in each tooth portion cooling runner that is located the other end rapidly through first axial runner 5 to make cooling medium cool off the both ends of stator winding 15 before not rising the temperature to a certain extent preferentially, and cooling medium's velocity of flow accelerates, also can take away the heat that the winding end produced fast. The path design of the cooling flow channel is more reasonable, and the cooling efficiency of the motor is higher.
Referring to fig. 5 and 6 in combination, the main body cooling flow passage further includes a plurality of second axial flow passages 6 and a plurality of third circumferential flow passages 7, each second axial flow passage 6 is circumferentially spaced along the cooling member 1, each third circumferential flow passage 7 is axially spaced along the cooling member 1, each third circumferential flow passage 7 is alternately communicated with each second axial flow passage 6, each combined flow passage formed by alternately communicating each third circumferential flow passage 7 with each second axial flow passage 6 has a third inlet end and a third outlet end, and the second outlet end is connected with the third inlet end
In this technical solution, after cooling the two ends of the stator winding 15, the cooling medium flows through each second circumferential flow channel 6 and each third circumferential flow channel 7 in turn, so that the cooling medium can have a larger heat exchange area with the stator core 2, and further more heat on the stator core 2 is taken away. And when the motor is in a vertical use state, each second axial flow channel 6 can also play a role in accelerating the flow speed of the cooling medium, so that the cooling medium can rapidly take away the heat on the stator core 2 in the circulating flow process. It should be noted that, the first circumferential flow channel 3, each first tooth cooling flow channel, each second tooth cooling flow channel of the second circumferential flow channel 4, the first axial flow channel 5, each second axial flow channel 6 and each third circumferential flow channel 7 are actually formed by bending one flow channel for a plurality of times, and how the flow channel is bent is carefully designed, so that the end part of the stator winding 15 can be cooled by the cooling medium first and then the stator core 2 can be cooled, and the flow speed of the circulating flow of the cooling medium can be accelerated. Fig. 5 and 6 show different arrangements of the first axial flow channels 5, the second axial flow channels 6 and the third circumferential flow channels 7.
As another embodiment, referring to fig. 7 in combination, the drainage flow channel includes a first inclined flow channel 8, where the first inclined flow channel 8 is disposed obliquely with respect to the axial direction of the cooling component 1, and two ends of the first inclined flow channel 8 are respectively connected to a first outflow end of the first circumferential flow channel 3 and a second inflow end of the second circumferential flow channel 4.
In the present embodiment, the first diagonal flow 8 is used to communicate the first circumferential flow 3 and the second circumference Xiang Liudao. Especially when the state of use of motor is the level and places, no matter cooling medium flows in by first circumference runner 3 or by second circumference runner 4, after cooling medium flows through each tooth portion cooling runner that is located same one end in proper order, under the effect of gravity, cooling medium all can flow in each tooth portion cooling runner that is located the other end rapidly through first slant runner 8 to make cooling medium cool off the both ends of stator winding 15 before not rising the temperature to a certain extent preferentially, and cooling medium's velocity of flow accelerates, also can take away the heat that the winding end produced fast.
Referring to fig. 7 in combination, the main body cooling flow passage further includes a plurality of second diagonal flow passages 9 and a plurality of third circumferential flow passages 7, each second diagonal flow passage 9 is distributed at intervals along the circumferential direction of the cooling component 1, each third circumferential flow passage 7 is distributed at intervals along the axial direction of the cooling component 1, each third circumferential flow passage 7 is alternately communicated with each second diagonal flow passage 9, a combined flow passage formed by alternately communicating each third circumferential flow passage 7 with each second diagonal flow passage 9 has a fourth inlet end and a fourth outlet end, and the second outlet end is connected with the fourth inlet end.
In this technical solution, after the cooling medium cools the two ends of the stator winding 15, the cooling medium flows through each second oblique flow channel 9 and each third circumferential flow channel 7 in turn, so that the cooling medium can have a larger heat exchange area with the stator core 2, and further more heat on the stator core 2 is taken away. And when the motor is horizontally placed in the use state, each second inclined flow channel 9 can also play a role in accelerating the flow speed of the cooling medium, so that the cooling medium can rapidly take away the heat on the stator core 2 in the circulating flow process. It should be noted that, the first circumferential flow channel 3, each first tooth cooling flow channel, each second tooth cooling flow channel of the second circumferential flow channel 4, the first oblique flow channel 8, each second oblique flow channel 9, and each third circumferential flow channel 7 are actually formed by bending one flow channel for a plurality of times, and how the flow channel is bent is carefully designed, so that the end part of the stator winding 15 can be cooled by the cooling medium first and then the stator core 2 can be cooled, and the flow speed of the circulating flow of the cooling medium can be accelerated.
It should be noted that the cooling medium may be water, cooling oil, etc., the first inlet end of the first circumferential flow channel 3 is provided with a liquid inlet pipe body 16, the end of the third circumferential flow channel 7 at the tail is provided with a liquid outlet pipe body 17, and the liquid inlet pipe body 16 and the liquid outlet pipe body 17 are matched with a cooling source so as to make the cooling medium circulate in the flow channel of the cooling component 1. The cooling element 1 may be a housing of the electric machine or may be a component in the electric machine and fixed to the inner surface of the housing. When the cooling component 1 is a component in the motor, the two ends of the main body 13 are also provided with a plurality of wire passing buckles 14, each wire passing buckle 14 at the first end of the main body 13 corresponds to each first insulating tooth body, each wire passing buckle 14 at the second end of the main body 13 corresponds to each second insulating tooth body, a wire passing channel is formed on the wire passing buckle 14, one side of the wire passing buckle 14 forms a blocking for the winding end, and the other side of the wire passing buckle fixes the wire passing of the winding lead on the outer wall of the main body 13.
Referring to fig. 2 in combination, the cooling member 1 is formed with a plurality of slits, each of which penetrates the cooling member 1. When the cooling part 1 is a shell of the motor, the plurality of gaps formed on the cooling part 1 can enable heat carried by cooling medium in the cooling part 1 to be rapidly dissipated into air, so that heat dissipation of the cooling medium is facilitated. It should be further clear that the cooling element 1 may be formed by constructing a cooling flow channel in the housing; the cooling component 1 may also be formed by bending a tube body for several times, and the outer contour of the cross section of the tube body is rectangular, so that the finally formed first insulating tooth body 11 and second insulating tooth body 12 have flat surfaces, and when the two end parts of the stator winding 15 are respectively positioned on the first insulating tooth body 11 and the second insulating tooth body 12, a larger contact area is formed between the winding end parts and the insulating tooth bodies, so that the cooling effect of the cooling medium on the winding end parts is better when the cooling medium flows through the tooth part cooling flow channel.
Finally, it should be briefly noted that the cooling element 1 can be made of a magnetically non-conductive insulating material, such as a PBT material; or insulating paint is coated on the non-magnetic material.
The invention also provides a motor which comprises the cooling structure.
Those skilled in the art will readily appreciate that the advantageous features of the various aspects described above may be freely combined and stacked without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (9)
1. A cooling structure, characterized by comprising a cooling part (1), said cooling part (1) being intended to be fitted on a stator core (2), said stator core (2) having at least two stator teeth;
at least two first insulating tooth bodies (11) are arranged on the cooling component (1), the first insulating tooth bodies (11) are distributed at intervals along the circumferential direction of the cooling component (1), the first insulating tooth bodies (11) point to the radial inner side of the cooling component (1), first tooth part cooling flow passages are formed in the first insulating tooth bodies (11), and when the cooling component (1) is assembled on the stator core (2), the first insulating tooth bodies (11) are respectively contacted with the first end faces of the stator teeth; at least two second insulating tooth bodies (12) are arranged on the cooling component (1), the second insulating tooth bodies (12) are distributed at intervals along the circumferential direction of the cooling component (1), the second insulating tooth bodies (12) point to the radial inner side of the cooling component (1), second tooth part cooling flow passages are formed in the second insulating tooth bodies (12), and when the cooling component (1) is assembled on the stator core (2), the second insulating tooth bodies (12) are respectively contacted with the second end surfaces of the stator teeth;
the cooling component (1) comprises a main body part (13), wherein the stator core (2) is accommodated in the main body part (13), the outer circumferential surface of the stator core (2) is contacted with the main body part (13), and a main body cooling flow channel is formed in the main body part (13);
each first insulating tooth body (11) is positioned on the main body part (13), each first tooth part cooling flow passage is communicated with the main body cooling flow passage, each second insulating tooth body (12) is positioned on the main body part (13), and each second tooth part cooling flow passage is communicated with the main body cooling flow passage;
the main body cooling flow passage comprises a first circumferential flow passage (3), the first circumferential flow passage (3) extends along the circumference of the cooling component (1), each first tooth cooling flow passage is communicated with the first circumferential flow passage (3), the main body cooling flow passage further comprises a second circumferential flow passage (4), the second circumferential flow passage (4) extends along the circumference of the cooling component (1), each second tooth cooling flow passage is communicated with the second circumferential flow passage (4), the main body cooling flow passage further comprises a drainage flow passage, and two ends of the drainage flow passage are respectively communicated with the first circumferential flow passage (3) and the second circumferential flow passage (4).
2. The cooling structure according to claim 1, wherein the first circumferential flow channel (3) comprises a plurality of sections of mutually independent first connecting flow channels, a first opening and a second opening are formed at two ends of each first tooth cooling flow channel, and the first tooth cooling flow channels are respectively communicated with two adjacent sections of the first connecting flow channels through the first opening and the second opening.
3. The cooling structure according to claim 1, wherein the second circumferential flow channel (4) comprises a plurality of sections of mutually independent second connecting flow channels, each of the second tooth cooling flow channels has a third opening and a fourth opening, and the second tooth cooling flow channels are respectively communicated with two adjacent sections of the second connecting flow channels through the third opening and the fourth opening.
4. The cooling structure according to claim 1, characterized in that the drainage flow channel comprises a first axial flow channel (5), the first axial flow channel (5) extending in the axial direction of the cooling element (1), the first circumferential flow channel (3) having a first inflow end and a first outflow end, the second circumferential flow channel (4) having a second inflow end and a second outflow end, both ends of the first axial flow channel (5) being connected to the first outflow end of the first circumferential flow channel (3) and to the second inflow end of the second circumferential flow channel (4), respectively.
5. The cooling structure according to claim 4, wherein the main body cooling flow passage further includes a plurality of second axial flow passages (6) and a plurality of third circumferential flow passages (7), each of the second axial flow passages (6) being circumferentially spaced apart along the cooling member (1), each of the third circumferential flow passages (7) being axially spaced apart along the cooling member (1), each of the third circumferential flow passages (7) being in alternating communication with each of the second axial flow passages (6), a combined flow passage formed by each of the third circumferential flow passages (7) being in alternating communication with each of the second axial flow passages (6) having a third inlet end and a third outlet end, the second outlet end being contiguous with the third inlet end.
6. The cooling structure according to claim 1, characterized in that the drainage flow channel comprises a first oblique flow channel (8), the first oblique flow channel (8) is arranged obliquely relative to the axial direction of the cooling component (1), the first circumferential flow channel (3) has a first inflow end and a first outflow end, the second circumferential flow channel (4) has a second inflow end and a second outflow end, and both ends of the first oblique flow channel (8) are respectively connected with the first outflow end of the first circumferential flow channel (3) and the second inflow end of the second circumferential flow channel (4).
7. The cooling structure according to claim 6, wherein the main body cooling flow passage further comprises a plurality of second diagonal flow passages (9) and a plurality of third circumferential flow passages (7), each of the second diagonal flow passages (9) is distributed at intervals along the circumferential direction of the cooling member (1), each of the third circumferential flow passages (7) is distributed at intervals along the axial direction of the cooling member (1), each of the third circumferential flow passages (7) is alternately communicated with each of the second diagonal flow passages (9), and a combined flow passage formed by alternately communicating each of the third circumferential flow passages (7) with each of the second diagonal flow passages (9) has a fourth inflow end and a fourth outflow end, and the second outflow end is connected with the fourth inflow end.
8. A cooling structure according to any one of claims 1 to 7, characterized in that the cooling element (1) is formed with a plurality of slits, each of which extends through the cooling element (1).
9. An electric machine comprising a cooling structure according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311746379.6A CN117424366B (en) | 2023-12-19 | 2023-12-19 | Cooling structure and motor with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311746379.6A CN117424366B (en) | 2023-12-19 | 2023-12-19 | Cooling structure and motor with same |
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| Publication Number | Publication Date |
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| CN117424366A CN117424366A (en) | 2024-01-19 |
| CN117424366B true CN117424366B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311746379.6A Active CN117424366B (en) | 2023-12-19 | 2023-12-19 | Cooling structure and motor with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119651949B (en) * | 2024-12-18 | 2025-09-26 | 岚图汽车科技有限公司 | Stator slot cooling structure and motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001055979A (en) * | 1999-08-11 | 2001-02-27 | Toshiba Kyaria Kk | Refrigerant compressor |
| CN113266644A (en) * | 2021-06-21 | 2021-08-17 | 珠海格力电器股份有限公司 | Stator assembly, magnetic suspension bearing and compressor |
| CN113315289A (en) * | 2021-06-21 | 2021-08-27 | 珠海格力电器股份有限公司 | Stator framework, magnetic suspension bearing, compressor and air conditioner |
-
2023
- 2023-12-19 CN CN202311746379.6A patent/CN117424366B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001055979A (en) * | 1999-08-11 | 2001-02-27 | Toshiba Kyaria Kk | Refrigerant compressor |
| CN113266644A (en) * | 2021-06-21 | 2021-08-17 | 珠海格力电器股份有限公司 | Stator assembly, magnetic suspension bearing and compressor |
| CN113315289A (en) * | 2021-06-21 | 2021-08-27 | 珠海格力电器股份有限公司 | Stator framework, magnetic suspension bearing, compressor and air conditioner |
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| CN117424366A (en) | 2024-01-19 |
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