CN108347135A - Motor cooling - Google Patents

Motor cooling Download PDF

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Publication number
CN108347135A
CN108347135A CN201810384070.XA CN201810384070A CN108347135A CN 108347135 A CN108347135 A CN 108347135A CN 201810384070 A CN201810384070 A CN 201810384070A CN 108347135 A CN108347135 A CN 108347135A
Authority
CN
China
Prior art keywords
air duct
motor
circulating air
dynamical element
rotor
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.)
Pending
Application number
CN201810384070.XA
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Chinese (zh)
Inventor
肖东
白金山
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.)
Chongqing Zhi Drive Technology Co Ltd
Original Assignee
Chongqing Zhi Drive Technology Co Ltd
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 Chongqing Zhi Drive Technology Co Ltd filed Critical Chongqing Zhi Drive Technology Co Ltd
Priority to CN201810384070.XA priority Critical patent/CN108347135A/en
Publication of CN108347135A publication Critical patent/CN108347135A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/10Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
    • 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 invention discloses a kind of motor coolings, including cooling water channel, internal circulating air duct and air duct dynamical element, the cooling water channel to be arranged in motor case;The internal circulating air duct is surrounded by motor case, end cap, internal bearing cover, stator core and rotor;Dynamical element installation chamber is provided on the casing, the air duct dynamical element is mounted in dynamical element installation chamber.There are circulating air duct, good cooling results that can reach high power density inside motor of the present invention;Rotor good cooling results improve the operation stability of motor magnetic material;Motor bearings good cooling results improve the service life of bearing;Cooling wind is recycled in inside, heat emission hole need not be arranged on casing, therefore all-sealed structure may be used in motor, noise is small.

Description

Motor cooling
Technical field
The invention belongs to technical field of motors, more particularly to a kind of motor cooling.
Background technology
Permanent magnet synchronous motor will produce loss during progress electric energy is converted into mechanical energy, these losses are motor temperature Raised heat source is spent, especially to high power permanent magnet synchronous motor, loss is big, and motor temperature rise is high, be easy to cause asking for magnet steel demagnetization Topic, prodigious influence is caused on motor normal use.The rational design motor type of cooling, can not only improve motor unit volume Power density, and can also improve motor work stability and motor insulation structure service life.
Traditional permanent magnet synchronous motor cooling generally cools down motor housing by air duct or cools down motor housing by water channel, However in practical application, permanent magnet synchronous motor is generally matched with frequency converter, and the characteristic of transducer power device determines defeated Go out current waveform and contain a large amount of harmonic waves, these harmonic waves can incude current vortex on permanent magnet, be had an impact to permanent magnet fever.It passes The system single type of cooling of motor only has preferable cooling to the stationary part of motor, and cooling effect is poor, if not to Permanent Magnet and Electric The rotor of machine is cooled down, and there are larger high temperature demagnetization risks, and then influence the use of permanent magnet synchronous motor.
Therefore, the new construction type of cooling is researched and developed, cooling efficiency is promoted, improves cooling effect of motor, improves permanent magnet synchronous electric Acc power density is of great importance.
Invention content
For the above the deficiencies in the prior art, the purpose of the present invention is to provide a kind of motor coolings, improve motor Cooling effect extends the service life of motor.
In order to achieve the above objectives, the technical scheme is that:
A kind of motor cooling, including:
Cooling water channel, the cooling water channel are arranged in motor case;
Internal circulating air duct, the internal circulating air duct is by motor case, end cap, internal bearing cover, stator core and rotor It surrounds;
Air duct dynamical element, dynamical element installation chamber is provided on the casing, and the air duct dynamical element is mounted on Dynamical element is installed in chamber;The dynamical element installation chamber offers air inlet and air outlet, the internal circulating air duct With circulating air duct gas outlet and circulating air duct air inlet, the air inlet of the circulating air duct gas outlet and dynamical element installation chamber Mouth connection, the air outlet that the circulating air duct air inlet installs chamber with dynamical element are connected to.
The present invention is provided with cooling water channel in motor case, and the loss that most of stator winding and iron core generate passes through water Road inner wall exchanges heat with cooling water, and the loss of stator winding end generation, bearing friction loss, magnet steel eddy-current loss are followed by inside Ring wind path is cooled down, and in this way under the collective effect of cooling water channel and internal circulating air duct, the cooling efficiency of motor carries significantly It rises, improves the cooling effect of motor, the power that can not only improve motor unit volume is close, and can also improve motor work The service life of stability and motor insulation structure.
Further, the rotor is hollow-core construction, and the both ends of rotor offer the radial direction being connected to its inner passage Ventilation hole;The motor is internally provided with two-way circulating air duct, wherein the gap between stator core and rotor is flowed through all the way, Another way is flowed through from sleeve rotor.The purpose designed in this way so that the inside and outside of rotor can be cooled down, and improves to permanent magnetism The cooling effect of rotor, avoid temperature it is excessively high and caused by demagnetize risk, ensure that the service life of magneto.
Further, the air inlet of the dynamical element installation chamber is provided with wind path kuppe.Kuppe is closing in shape, Main function is drained to internal circulated air so that internal circulated air can preferably recycle under the action of dynamical element It utilizes.
Further, it is provided with partition board in the internal circulating air duct.The main function of partition board be by internal circulating air duct every It is disconnected, ensure that internal circulating air duct does not generate reflux.
Further, in the internal circulating air duct heat exchanger is provided at circulating air duct air inlet.The master of heat exchanger Acting on is exchanged heat to cooling wind, and the cooling wind after heat exchange again radiates to motor inner components, is so recycled It utilizes.Certainly, heat exchanger is preferably disposed at the shell of motor cooling water channel so that structure is compacter.
Further, several cooling fins that direction arrangement is circulated along wind path are provided on the heat exchanger.It sets in this way The purpose of meter mainly considers that two aspect factors, one side factor are to ensure that enough heat dissipation areas, another aspect factor are also wanted Consider the influence to motor inside wind path windage.
Further, the rotor is made of jackshaft and the end axis being arranged at jackshaft both ends, and the jackshaft is hollow Structure, and the surface mount of jackshaft has magnet steel;One end of the end axis has hollow section, and the part of the hollow section is plugged into In the end of jackshaft, and hollow section is connected to the inner passage of jackshaft;The rest part of hollow section reaches outside jackshaft, And radial air openings are provided on extension.
Rotor uses segment design, and jackshaft is hollow shaft, holds the part hollow of axis, utilizes the radial direction of end shaft hollow part Ventilation hole forms access, and solid section is installed for bearing, better assure that the intensity of two ends of rotor bearing portion.
The beneficial effects of the present invention are:
1, there are circulating air duct, good cooling results that can reach high power density inside motor.
2, rotor good cooling results improve the operation stability of motor magnetic material.
3, motor bearings good cooling results improve the service life of bearing.
4, cooling wind is recycled in inside, need not be arranged heat emission hole on casing, thus motor may be used it is complete close Seal structure, noise are small.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, embodiment will be described below Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention wherein Two width for those of ordinary skill in the art without having to pay creative labor, can also be attached according to these Figure obtains other attached drawings.
Fig. 1 is the sectional view of motor cooling of the embodiment of the present invention.
Fig. 2 is the schematic diagram that cooling water channel and internal circulating air duct are pointed out on the basis of Fig. 1.
Fig. 3 is the heat exchanger structure figure of the embodiment of the present invention.
Fig. 4 is the rotor structure figure of the embodiment of the present invention.
Specific implementation mode
Below in conjunction with attached drawing, the technical solution in the present invention is clearly and completely described, it is clear that described Embodiment is only presently preferred embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field The every other embodiment that those of ordinary skill is obtained without making creative work, belongs to protection of the present invention Range.
Embodiment
As depicted in figs. 1 and 2, a kind of motor cooling, including:
Cooling water channel 16, the cooling water channel 16 is arranged in motor case 7, when it is implemented, can be in motor case 7 Interior setting water channel outer wall 14 and water channel inner wall 15, the gap between water channel outer wall 14 and water channel inner wall 15 constitute cooling water channel 16;
Internal circulating air duct, the internal circulating air duct are determined by motor case 7, drive end bearing bracket 1, fore bearing inner cover 2, band winding Sub- iron core 10, rotor 9, rear end cap 11 and rear internal bearing cover 12 surround;
Air duct dynamical element, air duct dynamical element use centrifugal fan 4, effect mainly to generate power to cooling wind, Cooling wind is set to be flowed in internal circulating air duct, to be cooled down to motor inner components;It is followed to improve inside Pressure and reduction fan noise, centrifugal fan 4 in ring air duct can select multiple-fin centrifugal fan;It is provided on casing 7 Dynamical element installs chamber, and dynamical element installation chamber can be made of the centrifugal fan seat 3 with spiral case and cover board, band spiral case Centrifugal fan seat 3 modes such as be fixed by bolts and be connected on casing 7, cover board is connected on the centrifugal fan seat 3 with spiral case, To constitute complete chamber, centrifugal fan 4 is mounted in the chamber, and centrifugal fan seat 3 is connected to by fan fixing screws 5 On the cover board at top;Dynamical element installation chamber offers air inlet and air outlet, and the internal circulating air duct has circulated air Road gas outlet and circulating air duct air inlet, the air inlet that the circulating air duct gas outlet installs chamber with dynamical element are connected to, institute Circulating air duct air inlet is stated to be connected to the air outlet of dynamical element installation chamber.
When motor works, the loss that most of stator winding and iron core generate is exchanged heat by water channel inner wall 15 and cooling water, The loss of stator winding end generation, bearing friction loss, magnet steel eddy-current loss are cooled down by internal circulating air duct, in this way Under the collective effect of cooling water channel and internal circulating air duct, the cooling efficiency of motor greatly promotes, and improves the cooling of motor Effect, the power that can not only improve motor unit volume is close, and can also improve the stability and motor insulation knot of motor work The service life of structure.
In the present embodiment, between stator core 10 and rotor 9 there are air gap, rotor 9 is hollow-core construction, and rotor 9 Both ends offer the radial air openings being connected to its inner passage, the purpose designed in this way is that two can be formed inside motor Road circulating air duct is the first cooling air duct 17 and the second cooling air duct 18 respectively, wherein the first cooling air duct 17 is from stator core Air gap between 10 and rotor 9 flows through, and the second cooling air duct 18 is flowed through from sleeve rotor.The purpose designed in this way makes rotor 9 It is inside and outside can be cooled down, improve the cooling effect to permanent magnet machine rotor, avoid temperature it is excessively high and caused by move back Magnetic wind danger, ensure that the service life of magneto.
In the present embodiment, the air inlet of the dynamical element installation chamber is provided with wind path kuppe 6, wind path water conservancy diversion Cover 6 is closing in shape, and main function is drained to internal circulated air so that internal circulated air can be in the effect of dynamical element Under preferably recycle.
In the present embodiment, it is provided with partition board 13 in the internal circulating air duct.The main function of partition board 13 is will be internal Circulating air duct is separated, and ensures that internal circulating air duct does not generate reflux.
In the present embodiment, in the internal circulating air duct heat exchanger 8 is provided at circulating air duct air inlet.Heat exchange The main function of device 8 is exchanged heat to cooling wind, and the cooling wind after heat exchange again radiates to motor inner components, such as This is recycled.Certainly, heat exchanger 8 is preferably disposed at the shell of motor cooling water channel 16 so that structure is compacter.
As shown in figure 3, in the present embodiment, several being provided on the heat exchanger 8 and circulates direction cloth along wind path The cooling fin set.The purpose designed in this way mainly considers that two aspect factors, one side factor are to ensure enough heat dissipation areas, Another aspect factor is also contemplated that the influence to motor inside wind path windage.
As shown in figure 4, in the present embodiment, the rotor 9 is by jackshaft 91 and the end axis at 91 both ends of jackshaft is arranged 93 compositions, the jackshaft 91 is hollow-core construction, and the surface mount of jackshaft 91 has magnet steel 92;One end of the end axis 93 has There is hollow section, the part of the hollow section, which is plugged by the way of interference fit in the end of jackshaft 91, (sets up separately plug division It is equipped with seam allowance), and hollow section is connected to the inner passage of jackshaft 91;The rest part of hollow section reaches outside jackshaft 91, And multiple radial air openings are provided on extension.That is, it is hollow that rotor 9, which uses segment design, jackshaft 91, Axis holds the part hollow of axis 93, forms complete wind path using the radial air openings of 93 hollow parts of end axis, solid section is used for Bearing is installed, and better assures that the intensity of two ends of rotor bearing portion.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.

Claims (7)

1. a kind of motor cooling, which is characterized in that including:
Cooling water channel, the cooling water channel are arranged in motor case;
Internal circulating air duct, the internal circulating air duct are surrounded by motor case, end cap, internal bearing cover, stator core and rotor;
Air duct dynamical element, dynamical element installation chamber is provided on the casing, and the air duct dynamical element is mounted on power Element is installed in chamber;The dynamical element installation chamber offers air inlet and air outlet, and the internal circulating air duct has Circulating air duct gas outlet and circulating air duct air inlet, the circulating air duct gas outlet and the air inlet of dynamical element installation chamber connect Logical, the air outlet that the circulating air duct air inlet installs chamber with dynamical element is connected to.
2. motor cooling according to claim 1, it is characterised in that:The rotor is hollow-core construction, and rotor Both ends offer the radial air openings being connected to its inner passage;The motor is internally provided with two-way circulating air duct, wherein The gap between stator core and rotor is flowed through all the way, and another way is flowed through from sleeve rotor.
3. motor cooling according to claim 1, it is characterised in that:The air inlet of the dynamical element installation chamber Place is provided with wind path kuppe.
4. motor cooling according to claim 1, it is characterised in that:Be provided in the internal circulating air duct every Plate.
5. motor cooling according to claim 1, it is characterised in that:Close to circulated air in the internal circulating air duct It is provided with heat exchanger at the air inlet of road.
6. motor cooling according to claim 5, it is characterised in that:Several are provided on the heat exchanger along wind Road circulates the cooling fin of direction arrangement.
7. motor cooling according to claim 1, it is characterised in that:The rotor is by jackshaft and is arranged in centre The end axis composition at axis both ends, the jackshaft is hollow-core construction, and the surface mount of jackshaft has magnet steel;One end of the end axis With hollow section, the part of the hollow section is plugged into the end of jackshaft, and the inner passage of hollow section and jackshaft connects It is logical;The rest part of hollow section reaches outside jackshaft, and radial air openings are provided on extension.
CN201810384070.XA 2018-04-26 2018-04-26 Motor cooling Pending CN108347135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810384070.XA CN108347135A (en) 2018-04-26 2018-04-26 Motor cooling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810384070.XA CN108347135A (en) 2018-04-26 2018-04-26 Motor cooling

Publications (1)

Publication Number Publication Date
CN108347135A true CN108347135A (en) 2018-07-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810384070.XA Pending CN108347135A (en) 2018-04-26 2018-04-26 Motor cooling

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117202536A (en) * 2023-11-06 2023-12-08 深圳市矗鑫电子设备有限公司 Double-rail cooling buffer memory for manufacturing electric element assembly

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1497821A (en) * 2002-10-08 2004-05-19 通用电气公司 Stator ventilation system of forred ventilation and stator ventilation method of superconducting synchronous machine
JP2006101658A (en) * 2004-09-30 2006-04-13 Toshiba Corp Totally enclosed motor for vehicle
JP2007089255A (en) * 2005-09-20 2007-04-05 Mitsubishi Electric Corp Dynamo-electric machine
CN202183694U (en) * 2011-08-18 2012-04-04 南阳防爆集团股份有限公司 Casing water-cooled type aerogenerator cooling structure
CN102810940A (en) * 2012-08-31 2012-12-05 中电电机股份有限公司 Wind path structure of jacket cooling motor
CN103236751A (en) * 2013-04-17 2013-08-07 西安交通大学 Cooling structure of high-speed permanent-magnet synchronous motor
CN203219017U (en) * 2012-12-28 2013-09-25 南车株洲电机有限公司 Internal cooling air passage device of casing water-cooling motor
US20140152154A1 (en) * 2011-06-30 2014-06-05 Hitachi, Ltd. Rotary Electric Machine
DE102013100453A1 (en) * 2012-11-29 2014-06-05 Vem Motors Gmbh Internal cooling circuit system for rotating type electric machine e.g. electric motor, has dual-fan that drives stator cooling channel flow, and twisting unit that is provided at short-circuit ring of rotor
CN104505971A (en) * 2014-12-26 2015-04-08 山西汾西重工有限责任公司 Water jacket inner-outer cooling structure
CN208128070U (en) * 2018-04-26 2018-11-20 重庆智驱科技有限公司 Motor cooling

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1497821A (en) * 2002-10-08 2004-05-19 通用电气公司 Stator ventilation system of forred ventilation and stator ventilation method of superconducting synchronous machine
JP2006101658A (en) * 2004-09-30 2006-04-13 Toshiba Corp Totally enclosed motor for vehicle
JP2007089255A (en) * 2005-09-20 2007-04-05 Mitsubishi Electric Corp Dynamo-electric machine
US20140152154A1 (en) * 2011-06-30 2014-06-05 Hitachi, Ltd. Rotary Electric Machine
CN202183694U (en) * 2011-08-18 2012-04-04 南阳防爆集团股份有限公司 Casing water-cooled type aerogenerator cooling structure
CN102810940A (en) * 2012-08-31 2012-12-05 中电电机股份有限公司 Wind path structure of jacket cooling motor
DE102013100453A1 (en) * 2012-11-29 2014-06-05 Vem Motors Gmbh Internal cooling circuit system for rotating type electric machine e.g. electric motor, has dual-fan that drives stator cooling channel flow, and twisting unit that is provided at short-circuit ring of rotor
CN203219017U (en) * 2012-12-28 2013-09-25 南车株洲电机有限公司 Internal cooling air passage device of casing water-cooling motor
CN103236751A (en) * 2013-04-17 2013-08-07 西安交通大学 Cooling structure of high-speed permanent-magnet synchronous motor
CN104505971A (en) * 2014-12-26 2015-04-08 山西汾西重工有限责任公司 Water jacket inner-outer cooling structure
CN208128070U (en) * 2018-04-26 2018-11-20 重庆智驱科技有限公司 Motor cooling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117202536A (en) * 2023-11-06 2023-12-08 深圳市矗鑫电子设备有限公司 Double-rail cooling buffer memory for manufacturing electric element assembly
CN117202536B (en) * 2023-11-06 2024-01-16 深圳市矗鑫电子设备有限公司 Double-rail cooling buffer memory for manufacturing electric element assembly

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