CN108347135A - Motor cooling - Google Patents
Motor cooling Download PDFInfo
- 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
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 51
- 239000000498 cooling water Substances 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 2
- 235000019628 coolness Nutrition 0.000 abstract description 2
- 239000000696 magnetic material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 230000001360 synchronised effect Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001095 motoneuron effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/10—Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
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
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.
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 |
Family
ID=62955265
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)
| Country | Link |
|---|---|
| CN (1) | CN108347135A (en) |
Cited By (1)
| 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 |
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| 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 |
-
2018
- 2018-04-26 CN CN201810384070.XA patent/CN108347135A/en active Pending
Patent Citations (11)
| 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)
| 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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