CN102624154A - Spiral and axial circulating cooling water channel structure for motor - Google Patents

Spiral and axial circulating cooling water channel structure for motor Download PDF

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Publication number
CN102624154A
CN102624154A CN2012101091403A CN201210109140A CN102624154A CN 102624154 A CN102624154 A CN 102624154A CN 2012101091403 A CN2012101091403 A CN 2012101091403A CN 201210109140 A CN201210109140 A CN 201210109140A CN 102624154 A CN102624154 A CN 102624154A
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China
Prior art keywords
cooling water
helical duct
water channel
helical
motor
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Pending
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CN2012101091403A
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Chinese (zh)
Inventor
忻晓华
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Huayu Automotive Systems Co Ltd
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Huayu Automotive Systems Co Ltd
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Priority to CN2012101091403A priority Critical patent/CN102624154A/en
Publication of CN102624154A publication Critical patent/CN102624154A/en
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Abstract

Disclosed is a spiral and axial circulating cooling water channel structure for a motor. The cooling water channel structure comprises a stator iron core of the motor, a cooling water channel is arranged in the iron core, the cooling water channel comprises a first spiral channel and a second spiral channel which are adjacent and extend parallelly, the inlet end of the first spiral channel is adjacent to the outlet end of the second spiral channel, and the outlet end of the first spiral channel is adjacent to and communicated with the inlet end of the second spiral channel. The first spiral channel and the second spiral channel are arranged parallelly along the axial direction of the iron core. Cooling water flows from the front end of the stator iron core to the back end of the stator iron core, then flows back to the front end, can evenly cool the iron core, and reduce the temperature difference between the front end and the back end of the stator iron core. The cooling water generates turbulence during backflow, which reduces the thermal resistance, and increases the heat exchange coefficient and the ratio of heat exchange, so that temperature increasing of the motor can be reduced, the power density can be improved; and the sealing can be achieved by using one rubber gasket, and the reliability and the process are remarkably improved.

Description

A kind of helical axis is to circulating motor cooling water channel structure
Technical field:
The present invention relates to electricity field, relate in particular to high efficiency electric such as excitation electromotor and magneto, particularly a kind of helical axis is to circulating motor cooling water channel structure.
Background technology:
High efficiency motor such as excitation electromotor and magneto utilize cooling water that motor is cooled off.In the prior art, the cooling water channel in the high efficiency motor adopts the water channel of helical axis to non-circulating type.In the non-circulating type water channel, cooling water inlet and outlet lay respectively at two ends at helical axis, and cooling water is from the outlet that enters the mouth; Axial temperature curve journey linear increment so the heat exchange effect is inhomogeneous, causes the motor stator core front and back end temperature difference big; Axial when long at the stator core of motor; Motor can temperature drift in the part of the last cooling of fluid, as long as and motor windings has when a bit its temperature surpasses the limiting temperature of the class of insulation, just there is failure risk in motor.Simultaneously, be not easy turbulization, can not improve heat exchange coefficient and heat transfer rate, the hermetically-sealed construction of cooling water channel also need be set at the two ends of stator core, increased the difficulty of sealing.
Summary of the invention:
The object of the present invention is to provide a kind of helical axis to circulating motor cooling water channel structure, the technical problem that described this helical axis is inhomogeneous to the heat exchange of non-circulating type cooling water channel to the helical axis that circulating motor cooling water channel structure will solve high efficiency motor in the prior art, there is failure risk in motor, can not improve heat exchange coefficient and heat transfer rate, sealing difficulty is big.
A kind of helical axis of the present invention is to circulating motor cooling water channel structure; The stator core that comprises motor is provided with cooling water channel in the described stator core, wherein; Described cooling water channel includes one first helical duct and one second helical duct; Described first helical duct and described second helical duct are arranged side by side, and the port of export of the arrival end of first helical duct and second helical duct is adjacent, and the arrival end of the port of export of first helical duct and second helical duct is adjacent and be communicated with.
Further, first helical duct and second helical duct axially being set up in parallel along stator core.
Further, the pitch of first helical duct and second helical duct equates.
Further; The arrival end of first helical duct is connected with one and goes into aquaporin; The described sagittal plane that axially is arranged in stator core of going into aquaporin; The port of export of first helical duct is connected with an exhalant canal, the sagittal plane that axially is arranged in stator core of described exhalant canal, and it is adjacent with exhalant canal and parallel to go into aquaporin.
Further, the section of first helical duct and second helical duct is all rectangular.
Operation principle of the present invention is: cooling water gets into first helical duct from the arrival end of first helical duct, gets into the arrival end of second helical duct then through the port of export of first helical duct, and the port of export from second helical duct flows out at last.Cooling water is back to front end again after the front end of stator core flows to the rear end; The front and back end temperature difference of stator core is dwindled, and evenly cools off stator core, turbulization when cooling water refluxes in switching-over; Thermal resistance is descended; Heat exchange coefficient rises, and heat transfer rate rises, and utilizes a rubber gasket to be encapsulated into aquaporin and exhalant canal simultaneously at an end of stator core.
The present invention and prior art are compared, and its effect is actively with tangible.The present invention is provided with the double helix cooling water channel of adjacent parallel extension in the stator core of motor, cooling water flows to the rear end forward end that refluxes again from the front end of stator core, can evenly cool off iron core; The stator core front and back end temperature difference is dwindled, and cooling water is turbulization when refluxing, and thermal resistance is descended; Heat exchange coefficient rises; Heat transfer rate rises, thereby can reduce the temperature rise of motor, improves power density; Adopt a rubber gasket just can realize sealing, reliability and manufacturability all are significantly increased.
Description of drawings:
Fig. 1 is the three-dimensional structure sketch map of a kind of helical axis of the present invention to circulating motor cooling water channel structure.
Fig. 2 is the end view of a kind of helical axis of the present invention to circulating motor cooling water channel structure.
Fig. 3 is the cutaway view of A-A direction among Fig. 2.
Embodiment:
Embodiment 1:
Like Fig. 1, Fig. 2 and shown in Figure 3; A kind of helical axis of the present invention is to circulating motor cooling water channel structure; Comprise the stator core (not shown) of motor, be provided with cooling water channel in the described stator core, wherein; Described cooling water channel includes one first helical duct 1 and one second helical duct 2; Described first helical duct 1 is arranged side by side with described second helical duct 2, and the port of export of the arrival end of first helical duct 1 and second helical duct 2 is adjacent, and the arrival end of the port of export of first helical duct 1 and second helical duct 2 is adjacent and be communicated with.
The place that is communicated with of the port of export that first helical duct 1 has been represented at the position 3 among Fig. 1 and the arrival end of second helical duct 2.
Further, first helical duct 1 and second helical duct 2 axially being set up in parallel along stator core.
Further, the pitch of first helical duct 1 and second helical duct 2 equates.
Further; The arrival end of first helical duct 1 is connected with one and goes into aquaporin 11; The described sagittal plane that axially is arranged in stator core of going into aquaporin 11; The port of export of first helical duct 1 is connected with an exhalant canal 21, the sagittal plane that axially is arranged in stator core of described exhalant canal 21, and it is adjacent and parallel with exhalant canal 21 to go into aquaporin 11.
Further, the section of first helical duct 1 and second helical duct 2 is all rectangular.
The course of work of present embodiment is: cooling water gets into first helical duct 1 from the arrival end of first helical duct 1, gets into the arrival end of second helical duct 2 then through the port of export of first helical duct 1, and the port of export from second helical duct 2 flows out at last.Cooling water is back to front end again after the front end of stator core flows to the rear end; The front and back end temperature difference of stator core is dwindled, and evenly cools off stator core, turbulization when cooling water refluxes in switching-over; Thermal resistance is descended; Heat exchange coefficient rises, and heat transfer rate rises, and utilizes a rubber gasket (not shown) to be encapsulated into aquaporin 11 and exhalant canal 21 simultaneously at an end of stator core.
Concrete, operation principle of the present invention is following:
According to the heat convection formula:
Figure BDA0000153068930000031
In the formula, α 2Be heat exchange coefficient, A is a heat exchange area, t 2And t F2It is the high and low temperature of fluid.Thus it is clear that, all can cause the increase of heat flow through change heat exchange coefficient, film-cooled heat, fluid temperature (F.T.).
Present embodiment promotes the heat exchange effect through the form of change fluid and the geometry of power and heat-transfer area; Under the prerequisite of equal fluid temperature (F.T.) and equal film-cooled heat; In the shortest time, realize the secondary cooling, make fluid the heat of solid thermal source heat exchange and homogenizing to greatest extent.Enable the very fast the hottest place that is cooled to thermal source; This fluid arrives, and the speed at hot place is existing helical axis 2 times to the non-circulating type water channel; Make turbulent flow get into the thermal source depths easily so when once cooling off, accelerated speed; And also turbulization when the secondary cooling for reflux, thus make it that thermal resistance descends, heat exchange coefficient rises, heat transfer rate rises, thus reduce temperature rise.And it is because the intake-outlet of this kind design is in same direction, so also greatly convenient and reliable on Seal Design.

Claims (5)

1. a helical axis is to circulating motor cooling water channel structure; The stator core that comprises motor; Be provided with cooling water channel in the described stator core, it is characterized in that: described cooling water channel includes one first helical duct and one second helical duct, and described first helical duct and described second helical duct are arranged side by side; The port of export of the arrival end of first helical duct and second helical duct is adjacent, and the arrival end of the port of export of first helical duct and second helical duct is adjacent and be communicated with.
2. a kind of helical axis as claimed in claim 1 is characterized in that to circulating motor cooling water channel structure: first helical duct and second helical duct axially being set up in parallel along stator core.
3. a kind of helical axis as claimed in claim 1 is characterized in that to circulating motor cooling water channel structure: the pitch of first helical duct and second helical duct equates.
4. a kind of helical axis as claimed in claim 1 is to circulating motor cooling water channel structure; It is characterized in that: the arrival end of first helical duct is connected with one and goes into aquaporin; The described sagittal plane that axially is arranged in stator core of going into aquaporin; The port of export of first helical duct is connected with an exhalant canal, the sagittal plane that axially is arranged in stator core of described exhalant canal, and it is adjacent with exhalant canal and parallel to go into aquaporin.
5. a kind of helical axis as claimed in claim 1 is characterized in that to circulating motor cooling water channel structure: the section of first helical duct and second helical duct is all rectangular.
CN2012101091403A 2012-04-13 2012-04-13 Spiral and axial circulating cooling water channel structure for motor Pending CN102624154A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102969827A (en) * 2012-11-07 2013-03-13 重庆红宇精密工业有限责任公司 High power density permanent magnet synchronous motor with radiator
CN104702008A (en) * 2014-08-29 2015-06-10 北京精密机电控制设备研究所 Torque servo motor for submarine
CN106992614A (en) * 2017-05-10 2017-07-28 清华大学苏州汽车研究院(吴江) Motor stator cooling structure and motor
CN108736658A (en) * 2017-04-21 2018-11-02 三菱电机株式会社 Electric rotating machine
CN116111748A (en) * 2023-04-10 2023-05-12 湖南大学 Reinforced synchronous heat dissipation stator structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2668482B2 (en) * 1991-06-04 1997-10-27 メガメーション・インコーポレーテッド Linear motor system stator
CN201118333Y (en) * 2007-03-26 2008-09-17 深圳市金奇稀土电机有限公司 Driving electromotor for water cooling electric car
CN201270447Y (en) * 2008-10-17 2009-07-08 永济新时速电机电器有限责任公司 Water sleeve for water cooling motor
CN102013752A (en) * 2011-01-01 2011-04-13 上海东润换热设备制造有限公司 Engine base with novel cooling jacket
CN202524243U (en) * 2012-04-13 2012-11-07 华域汽车电动系统有限公司 Structure of spiral axial recirculation coolant gallery of motor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2668482B2 (en) * 1991-06-04 1997-10-27 メガメーション・インコーポレーテッド Linear motor system stator
CN201118333Y (en) * 2007-03-26 2008-09-17 深圳市金奇稀土电机有限公司 Driving electromotor for water cooling electric car
CN201270447Y (en) * 2008-10-17 2009-07-08 永济新时速电机电器有限责任公司 Water sleeve for water cooling motor
CN102013752A (en) * 2011-01-01 2011-04-13 上海东润换热设备制造有限公司 Engine base with novel cooling jacket
CN202524243U (en) * 2012-04-13 2012-11-07 华域汽车电动系统有限公司 Structure of spiral axial recirculation coolant gallery of motor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102969827A (en) * 2012-11-07 2013-03-13 重庆红宇精密工业有限责任公司 High power density permanent magnet synchronous motor with radiator
CN104702008A (en) * 2014-08-29 2015-06-10 北京精密机电控制设备研究所 Torque servo motor for submarine
CN108736658A (en) * 2017-04-21 2018-11-02 三菱电机株式会社 Electric rotating machine
CN108736658B (en) * 2017-04-21 2020-05-12 三菱电机株式会社 Rotating electrical machine
CN106992614A (en) * 2017-05-10 2017-07-28 清华大学苏州汽车研究院(吴江) Motor stator cooling structure and motor
CN116111748A (en) * 2023-04-10 2023-05-12 湖南大学 Reinforced synchronous heat dissipation stator structure
CN116111748B (en) * 2023-04-10 2024-02-13 湖南大学 Reinforced synchronous heat dissipation stator structure

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Application publication date: 20120801