CN112636522A - Motor heat abstractor and motor thereof - Google Patents

Motor heat abstractor and motor thereof Download PDF

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Publication number
CN112636522A
CN112636522A CN202011457791.2A CN202011457791A CN112636522A CN 112636522 A CN112636522 A CN 112636522A CN 202011457791 A CN202011457791 A CN 202011457791A CN 112636522 A CN112636522 A CN 112636522A
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CN
China
Prior art keywords
motor
stator
heat dissipation
fins
cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202011457791.2A
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Chinese (zh)
Other versions
CN112636522B (en
Inventor
王勇
童童
廖克亮
张健
钟镇业
蒋云龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN202011457791.2A priority Critical patent/CN112636522B/en
Priority claimed from CN202011457791.2A external-priority patent/CN112636522B/en
Publication of CN112636522A publication Critical patent/CN112636522A/en
Application granted granted Critical
Publication of CN112636522B publication Critical patent/CN112636522B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/18Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium

Abstract

The application discloses a motor heat abstractor and motor thereof relates to the technical field of motor heat dissipation. The motor heat dissipation device is sleeved on the outer peripheral surface of the motor stator and comprises a shell and a driving piece, and the driving piece is assembled on the shell; a plurality of fins are arranged on one side of the shell facing the stator at intervals along the circumferential direction; a heat dissipation channel is formed between every two adjacent fins, and heat exchange airflow flowing along the heat dissipation channel is formed through the driving piece. Compared with the prior art, set up a plurality of fins through the one side at the casing towards the stator in this application, increase the heat transfer area between casing and the stator through the fin on the one hand, on the other hand accessible driving piece drive fluid accelerates the velocity of flow of the fluid in the radiating passage between two adjacent fins, further strengthens the radiating efficiency between casing and the stator, and then improves the holistic radiating efficiency of motor, simple structure easily promotes.

Description

Motor heat abstractor and motor thereof
Technical Field
The application relates to the technical field of motor heat dissipation, in particular to a motor heat dissipation device and a motor thereof.
Background
The use of motors has been used in various scenarios, where the stator and the rotor are disposed inside the motor, and the heat dissipation of the stator affects the overall performance of the motor power.
At present, the motor shell is cooled by natural wind for most of heat dissipation of the motor, a flow guide channel is arranged on the shell, heat exchange is carried out on the natural wind along one direction and the shell, the shell can be cooled by the heat dissipation mode, the air-cooled heat dissipation effect is limited, vibration between the shell and the stator is reduced, a spacing gap is usually arranged between the shell and the stator, namely, heat between the shell and the stator is exchanged through air in the spacing gap, and the overall heat dissipation efficiency of the motor is further reduced.
Disclosure of Invention
In order to solve the technical problem of low heat dissipation efficiency of the motor, the main objective of the application is to provide a motor heat dissipation device and a motor thereof, wherein the motor heat dissipation device can be high in heat dissipation efficiency.
In order to achieve the purpose of the invention, the following technical scheme is adopted in the application:
according to one aspect of the application, a motor heat dissipation device is provided, which is sleeved on the peripheral surface of a motor stator and comprises a shell and a driving piece, wherein the driving piece is assembled on the shell;
a plurality of fins are arranged on one side, facing the stator, of the shell and are arranged at intervals along the circumferential direction;
and a heat dissipation channel is formed between every two adjacent fins, and heat exchange airflow flowing along the heat dissipation channel is formed by the driving piece.
According to an embodiment of the present application, inner end surfaces of the plurality of fins are attached to the outer peripheral surface of the stator.
According to an embodiment of the present application, the cross-sectional width of the fin is gradually reduced from outside to inside.
According to an embodiment of the application, the fins and the heat dissipation channels each extend in an axial direction of the stator.
According to an embodiment of the application, wherein still include the end cover, the end cover set up in the both sides of casing, the driving piece is located and deviates from the power take off side outside the end cover, the water conservancy diversion mouth has been seted up to the end cover, the driving piece passes through the water conservancy diversion mouth switches on to heat dissipation channel.
According to an embodiment of the application, wherein the stator with still be provided with the inner cup between the end cover, the inner cup with form the heat dissipation chamber between the casing, the heat dissipation chamber with heat dissipation channel switches on.
According to an embodiment of the present application, wherein the end cap is integrally formed with the inner cap; alternatively, the first and second electrodes may be,
the inner cover and the stator are integrally formed.
According to an embodiment of the present application, the flow guide opening includes a plurality of flow guide openings, and the plurality of flow guide openings are arranged at intervals upward.
According to an embodiment of the present application, the flow guiding opening is a long hole structure, the long hole structure extends along an arc, and the axis of the motor passes through the center of the arc.
According to an embodiment of the present application, a sealing member is attached between the open end of the inner cover and the stator or the end cover.
According to an embodiment of the application, wherein the stator or the end cover is provided with a sealing groove on the side facing the seal, the seal being partially embedded in the sealing groove.
According to an embodiment of the present application, wherein the number of the fins is N, the number of teeth of the stator is N, and the number of poles of the rotor of the electric motor is P, satisfy:
according to another aspect of the present application, there is provided a motor including the motor heat sink.
According to the technical scheme, the motor heat dissipation device and the motor thereof have the advantages and positive effects that:
through set up a plurality of fins on one side of the relative stator of casing, increase on the one hand the casing with heat transfer area between the stator, on the other hand forms heat dissipation channel between two adjacent fins, through the driving piece drives fluid heat transfer in the heat dissipation channel, and then strengthens the casing with radiating efficiency between the stator effectively improves the holistic heat transfer coefficient of motor, can cool down convenient to use, simple structure, easily use widely fast to the motor.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
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, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic cross-sectional view of an overall heat dissipation device for an electric machine according to an exemplary embodiment.
Fig. 2 is an enlarged schematic structural diagram of a heat sink a of a motor according to an exemplary embodiment.
Fig. 3 is a schematic cross-sectional view of another exemplary motor heat sink in accordance with an exemplary embodiment.
Fig. 4 is a schematic cross-sectional view of an end cap of a heat sink of an electric machine according to an exemplary embodiment.
Wherein the reference numerals are as follows:
1. a housing; 2. a drive member; 3. a fin; 4. a heat dissipation channel; 5. an end cap; 6. a flow guide port; 7. an inner cover; 8. a heat dissipation cavity; 9. a seal member; 10. a sealing groove; 11. sealing the cavity; 100. and a stator.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
At present, the motor shell is cooled by natural wind for most of heat dissipation of the motor, a flow guide channel is arranged on the shell, heat exchange is carried out on the natural wind along one direction and the shell, the shell can be cooled by the heat dissipation mode, the air-cooled heat dissipation effect is limited, vibration between the shell and the stator is reduced, a spacing gap is usually arranged between the shell and the stator, namely, heat between the shell and the stator is exchanged through air in the spacing gap, and the overall heat dissipation efficiency of the motor is further reduced. In order to solve the problem of low heat dissipation efficiency of the motor in the prior art, the motor heat dissipation device is provided and sleeved on the peripheral surface of a motor stator and comprises a shell 1 and a driving piece 2, wherein the driving piece 2 is assembled on the shell 1;
a plurality of fins 3 are arranged on one side of the shell 1 facing the stator 100, and the plurality of fins 3 are arranged at intervals along the circumferential direction;
a heat dissipation channel 4 is formed between two adjacent fins 3, and a heat exchange air flow flowing along the heat dissipation channel 4 is formed through the driving piece 2.
Referring to fig. 1, as an example, the driving member 2 may be configured as a fan, so that the fan directly radiates heat to the stator 100 through the heat radiation channel 4 between the plurality of fins 3, and the heat exchange area between the housing 1 and the motor is increased by the plurality of fins 3. Can with driving piece 2 set up in the one end of casing 1 makes a plurality of fins 3 follow electric motor rotor axial extension sets up, and then, can make adjacent two fins 3 with form heat dissipation channel 4 between the stator 100, heat dissipation channel 4 can with the heat of stator 100 carries out quick heat dissipation through the air current that the fan produced, and then reduces the holistic temperature of motor.
Referring to fig. 3, a person skilled in the art may adjust the number of the fins 3 and the distance between two adjacent fins 3 according to an actual use condition, specifically, the plurality of fins 3 may be circumferentially arranged along the axis of the motor rotor, and the size of the central angle between two adjacent fins 3 may also be adjusted, so as to control the size of the heat exchange area between the fins 3 and the stator 100 to be reasonably adjusted to the wind resistance of the driving member 2 in the heat dissipation channel 4, which is not specifically limited in the present application.
According to an embodiment of the present application, inner end surfaces of the plurality of fins 3 are attached to the outer circumferential surface of the stator 100. It should be noted that the inner end surface of the fin 3 may be designed to be an arc structure that is matched with the stator 100, so that the attachment area between the fin 3 and the stator 100 can be increased, the driving member 2 drives the fluid to be concentrated in the heat dissipation channel 4, and the flow rate of the heat exchange air flow in the heat dissipation channel 4 is further relatively increased.
According to an embodiment of the present application, the cross-sectional width of the fin 3 is gradually reduced from outside to inside. Preferably, the plurality of fins 3 may be arranged such that the cross-sectional area of the fins 3 from the outer end surface to the inner end surface of the fins 3 is gradually reduced, for example, the cross-section of the fins 3 may be arranged in a trapezoidal structure, and the fins 3 may be arranged in a plate-shaped structure, so that the trapezoidal plate-shaped fins 3 extend along the axial direction of the motor rotating shaft, and the heat transfer efficiency of the fins 3 is gradually increased from inside to outside, thereby improving the effective heat transfer area and further improving the heat dissipation effect, and the radius of the space in the motor from the housing 1 to the axial direction of the rotor is gradually reduced.
According to an embodiment of the present application, the fins 3 and the heat dissipation channels 4 extend in the axial direction of the stator 100. It should be noted that, the two ends of the heat dissipation channel 4, which are opposite to the axial direction of the stator 100, are provided with an air inlet (not shown) and an air outlet (not shown), and the driving member 2 can control the heat exchange airflow to flow to one side of the air outlet along the air inlet for heat exchange.
The driving member 2 can introduce heat exchange gas, that is, external gas having a temperature difference with the working temperature of the stator 100 or the motor, into the space between the housing 1 and the stator 100 through the heat dissipation channel 4.
Wherein the number of fin 3 is N, the number of teeth of stator 100 is N to and electric motor rotor's number of poles is P, satisfies:and further, the noise frequency multiplication peak value of the motor alternately appears, and the integral noise of the motor is reduced. The person skilled in the art can adjust the number of teeth of the stator 100 to N and the number of poles of the motor rotor to P according to the relation according to the actual use condition, thereby adjusting the number of the fins 3.
According to an embodiment of the application, wherein still include end cover 5, end cover 5 set up in the both sides of casing 1, driving piece 2 is located and deviates from the power take off side outside end cover 5, water conservancy diversion mouth 6 has been seted up to end cover 5, driving piece 2 passes through water conservancy diversion mouth 6 switches on to heat dissipation channel 4.
End cover 5 of 1 both sides of casing will stator 100 and the rotor setting of motor wrap up in inside the casing 1, driving piece 2 can set up in deviating from motor rotor power take off end one side end cover 5 corresponds heat dissipation channel 4's position corresponds sets up a plurality of guiding openings 6, can make driving piece 2 drive fluid pass through guiding opening 6 enters into in the heat dissipation channel 4, flow out from guiding opening 6 of opposite side end cover 5 again, when further concentrating the fluid air-out, take away fast the heat that stator 100 produced in the motor.
Referring to fig. 4, according to an embodiment of the present application, the diversion opening 6 includes a plurality of diversion openings 6, and the plurality of diversion openings 6 are circumferentially arranged at intervals. It should be noted that the flow guide openings 6 may be coaxially and rotatably disposed with the axis of the stator 100, when in use, the heat dissipation channels 4 between the fins 3 may be disposed correspondingly, and according to an actual use condition, the opening areas of the flow guide openings 6 are adjusted, the ventilation volume of the flow guide openings 6 at a part of positions is adjusted, and further, the heat dissipation efficiency at a part of positions of the stator 100 is adjusted.
Specifically, the air outlet area of the flow guide opening 6 can be increased at the position of the stator 100 where a higher heat exchange position is needed, so that the air quantity in the heat dissipation channel 4 at the corresponding position is increased, and the heat exchange and heat dissipation effects are improved; on the contrary, the air outlet area of the flow guide opening 6 can be reduced at the position of the stator 100 which needs a lower heat exchange position, so that the air quantity in the heat dissipation channel 4 at the corresponding position is relatively reduced, the heat exchange and heat dissipation effects are improved, and the air outlet effect of the driving piece 2 is efficiently improved.
According to an embodiment of the application, wherein flow guide opening 6 is a long hole structure, the long hole structure extends along an arc, and the axis of the motor passes through the center of the arc, so that the wind resistance can be effectively reduced, and the cooling capacity is improved.
Further, in order to better concentrate the wind speed generated by the driving member 2, the fins 3 may be connected with the stator 100 in an interference fit manner, and at the same time, the heat exchange area between the stator 100 and the rotor may be increased.
According to an embodiment of the present application, an inner cover 7 is further disposed between the stator 100 and the end cover 5, a heat dissipation cavity 8 is formed between the inner cover 7 and the housing 1, and the heat dissipation cavity 8 is communicated with the heat dissipation channel 4.
Referring to fig. 2, the inner cover 7 may be hermetically connected to one end of the stator 100, the inner cover 7 is attached to one end of the stator 100, a sealing cavity 11 is formed on one side of the inner cover 7 facing the motor rotor, a heat dissipation cavity 8 is formed on one side of the inner cover 7 facing the housing 1, and the driving member 2 flows fluid through the heat dissipation cavity 8 and then flows out through the heat dissipation channel 4. And then the motor rotor is relatively sealed, and the sealing performance of the motor is improved.
According to an embodiment of the present application, wherein the end cap 5 is integrally formed with the inner cap 7; alternatively, the first and second electrodes may be,
the inner cover 7 is integrally formed with the stator 100.
And the opposite open end of the inner cover 7 is attached and sealed with the stator 100 or the end cover 5, so that the stability of the whole structure is improved on one hand. One skilled in the art can adjust the relative thickness of the inner cover 7 and thus the structural strength between the end cap 5 and the stator 100.
According to an embodiment of the present application, a sealing member 9 is disposed between the open end of the inner cover 7 and the stator 100 or the end cover 5. According to an embodiment of the present application, a sealing groove 10 is provided on a side of the stator 100 or the end cover 5 facing the sealing element 9, and the sealing element 9 is partially embedded in the sealing groove 10.
For example, the inner cover 7 is integrally connected to the end cap 5, a sealing member 9 is disposed between the inner cover 7 and one end of the stator 100, the sealing member 9 may be disposed on an O-ring, and a person skilled in the art may fix the sealing member to the inner cover 7 or one end of the stator 100 in accordance with the radius of the stator 100, thereby sealing the connection between the inner cover 7 and the stator 100 and improving the sealing performance of the entire motor.
Further, the winding end of the motor stator 100 can be encapsulated by using a high-temperature-resistant insulating material, a convex end with a regular shape is formed after curing, a circular sealing groove 10 can be machined, and an O-shaped sealing ring is arranged in the sealing groove 10 to play a role in sealing and ensure the protection grade of the motor.
According to another aspect of the present application, there is provided a motor including the motor heat sink.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (13)

1. A motor heat dissipation device is sleeved on the peripheral surface of a motor stator (100), and is characterized by comprising a shell (1) and a driving piece (2), wherein the driving piece (2) is assembled on the shell (1);
a plurality of fins (3) are arranged on one side, facing the stator (100), of the shell (1), and the plurality of fins (3) are arranged at intervals along the circumferential direction;
and a heat dissipation channel (4) is formed between every two adjacent fins (3), and heat exchange airflow flowing along the heat dissipation channel (4) is formed through the driving piece (2).
2. The motor heat sink according to claim 1, wherein inner end surfaces of the plurality of fins (3) are attached to an outer peripheral surface of the stator (100).
3. The motor heat sink according to claim 1, wherein the cross-sectional width of the fins (3) is gradually reduced from outside to inside.
4. The motor heat sink according to claim 1, characterized in that the fins (3) and the heat dissipation channel (4) each extend in the axial direction of the stator (100).
5. The motor heat sink according to claim 1, further comprising end caps (5), wherein the end caps (5) are disposed on two sides of the housing (1), the driving member (2) is located outside the end caps (5) facing away from the power output side, the end caps (5) are opened with flow guide openings (6), and the driving member (2) is connected to the heat dissipation channel (4) through the flow guide openings (6).
6. The motor heat sink according to claim 5, wherein an inner cover (7) is further disposed between the stator (100) and the end cover (5), a heat dissipation cavity (8) is formed between the inner cover (7) and the housing (1), and the heat dissipation cavity (8) is in communication with the heat dissipation channel (4).
7. The motor heat sink according to claim 6, characterized in that the end cap (5) is integrally formed with the inner cover (7); alternatively, the first and second electrodes may be,
the inner cover (7) and the stator (100) are integrally formed.
8. The motor heat sink according to claim 5, wherein the plurality of flow guide openings (6) are provided, and the plurality of flow guide openings (6) are circumferentially arranged at intervals.
9. The heat sink for motor as claimed in claim 5, wherein the flow guide opening (6) is a long hole structure, the long hole structure extends along an arc, and the axis of the motor passes through the center of the arc.
10. The motor heat sink according to claim 6, wherein a sealing member (9) is attached between the open end of the inner cover (7) and the stator (100) or the end cover (5).
11. The heat sink for an electric machine according to claim 10, characterised in that a sealing groove (10) is provided on the side of the stator (100) or the end cover (5) facing the seal (9), the seal (9) being partially embedded in the sealing groove (10).
12. The motor heat sink according to any one of claims 1-11, wherein the number of the fins (3) is N, the number of the teeth of the stator (100) is N, and the number of the poles of the motor rotor is P, such that:
13. an electrical machine comprising a heat sink for an electrical machine according to any one of claims 1 to 12.
CN202011457791.2A 2020-12-10 Motor heat abstractor and motor thereof Active CN112636522B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011457791.2A CN112636522B (en) 2020-12-10 Motor heat abstractor and motor thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011457791.2A CN112636522B (en) 2020-12-10 Motor heat abstractor and motor thereof

Publications (2)

Publication Number Publication Date
CN112636522A true CN112636522A (en) 2021-04-09
CN112636522B CN112636522B (en) 2021-11-16

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072999A1 (en) * 1981-08-28 1983-03-02 Robert Bosch Gmbh Electrical machine, in particular a three-phase generator with internal cooling ducts
CN201478944U (en) * 2009-09-09 2010-05-19 董国庆 Automobile generator with double air passages and double fans
CN102934328A (en) * 2010-04-20 2013-02-13 雷米技术有限公司 Alternator with dual axial airflow
CN204465264U (en) * 2015-02-09 2015-07-08 海安县恒益滑动轴承有限公司 A kind of motor of high efficiency and heat radiation
CN106160301A (en) * 2016-08-24 2016-11-23 天津东方兴泰工业科技股份有限公司 A kind of New-type electric machine housing
CN111641286A (en) * 2020-07-03 2020-09-08 宁波锚点驱动技术有限公司 Motor and electric fan with same
CN111953124A (en) * 2020-08-07 2020-11-17 中国科学院电工研究所 Semi-closed permanent magnet motor cooling system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072999A1 (en) * 1981-08-28 1983-03-02 Robert Bosch Gmbh Electrical machine, in particular a three-phase generator with internal cooling ducts
CN201478944U (en) * 2009-09-09 2010-05-19 董国庆 Automobile generator with double air passages and double fans
CN102934328A (en) * 2010-04-20 2013-02-13 雷米技术有限公司 Alternator with dual axial airflow
CN204465264U (en) * 2015-02-09 2015-07-08 海安县恒益滑动轴承有限公司 A kind of motor of high efficiency and heat radiation
CN106160301A (en) * 2016-08-24 2016-11-23 天津东方兴泰工业科技股份有限公司 A kind of New-type electric machine housing
CN111641286A (en) * 2020-07-03 2020-09-08 宁波锚点驱动技术有限公司 Motor and electric fan with same
CN111953124A (en) * 2020-08-07 2020-11-17 中国科学院电工研究所 Semi-closed permanent magnet motor cooling system

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