CN101651376A - Electric machine stator winding heat dissipation method and device - Google Patents
Electric machine stator winding heat dissipation method and device Download PDFInfo
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- CN101651376A CN101651376A CN200910042852A CN200910042852A CN101651376A CN 101651376 A CN101651376 A CN 101651376A CN 200910042852 A CN200910042852 A CN 200910042852A CN 200910042852 A CN200910042852 A CN 200910042852A CN 101651376 A CN101651376 A CN 101651376A
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Abstract
The invention relates to an electric machine stator winding heat dissipation method and device. Two layer electric machine main pole winding structure is adopted, and the two layers of main pole winding are respectively insulated and then directly adhered together; an aluminium alloy heat dissipation plate is arranged between the two layers of the electric machine main pole winding to strengthen heat conduction while an aluminium alloy heat dissipation strip is filled in the triangle area formed by lamination of coils of the two layers of the electric machine main pole winding, and the aluminium alloy heat dissipation strip of the triangle area and the aluminum alloy heat dissipation plate between the two layers of the electric machine main pole winding are connected together, and the aluminium alloy heat dissipation strip and the aluminium alloy heat dissipation plate form a whole heat conduction device to strengthen stator main pole winding heat dissipation. When the electric machineis in operation, heat produced by energizing of the stator main pole winding can be conducted onto the aluminium alloy plate mostly, and the aluminium alloy has small heat resistance in heat conduction and can effectively conduct heat to the outer surface of the triangle, thus conducting the heat into cooling air.
Description
Technical field
The present invention relates to a kind of motor stator heat dissipating method and structure, is a kind of motor stator insulated winding heat dissipating method and structure specifically.Be adapted at using in the high direct current machine of heating in winding parameter.
Background technology
Motor mainly is divided into rotor and stator, all inlays in rotor and stator or insulated coil is installed.The insulating properties of these insulated coils and thermal diffusivity have very big influence to the overall performance of motor.Especially for the oil field DC motor of high torque (HT), big electric current, motor volume is little, power is big, torque and electric current are all big, and the heating parameter height of motor is so this class motor more needs good thermal diffusivity and insulating properties.At present the stator main pole winding of this class direct current machine all be divided into two layers flat around, layer insulation is arranged between levels, full at the delta-shaped region of stator coil with filling the bod, whole again outsourcing insulation (see figure 1).This motor stator main pole winding construction is found motor stator winding temperature rise severe overweight (250K＞180K limit value) when being applied to high torque (HT), big electric current oil field DC motor.Can not satisfy the needs of real work, must be improved this.
Summary of the invention
Purpose of the present invention exactly for the deficiency of the stator main pole winding construction of the direct current machine that overcomes existing thermal parameter occurred frequently, proposes the stator main pole winding heat dissipating method and the structure of the better direct current machine of a kind of radiating effect.This heat dissipating method and structure can not increase motor volume, also do not increase under the situation of motor cooling air quantity, further improve the thermal diffusivity of the stator main pole winding of direct current machine.
The technical solution adopted for the present invention to solve the technical problems is: a kind of stator main pole winding heat dissipating method of direct current machine adopt two-layer motor main pole around structure, and the main pole winding is for two layers after wrapping insulation respectively, directly to fit together again; In order to strengthen heat conduction, between two layers of motor main pole windings, be provided with the aluminium alloy heating panel; Also be plugged with the aluminium alloy heat sink strip at the formed delta-shaped region in the superimposed back of motor main pole winding two layer line circles simultaneously, and the aluminium alloy heating panel between two layers of the aluminium alloy heat sink strip of delta-shaped region and the motor main pole windings links together, aluminium alloy heating panel between two layers of aluminium alloy heat sink strip by delta-shaped region and the motor main pole windings forms the heat-transfer device of an integral body, strengthens the heat radiation of stator main pole winding.
The stator main pole winding radiator structure that is proposed according to said stator main pole winding heat dissipating method is: a kind of stator main pole winding heat abstractor comprises electric machine stand, stator main pole winding and main pole core, the attached utmost point winding of stator and attached extremely unshakable in one's determination.By being bolted on the support, attached utmost point winding also is fixed on the support by bolt by attached extremely iron core the main pole winding by main pole core, and they form the stator of motor jointly.Motor main pole winding is closely adjacent with attached utmost point winding, and middle space is the ventilation section of motor stator.Motor stator main pole winding is a two-layer structure, is characterized in: the main pole winding is for two layers after wrapping insulation respectively, directly to fit together again; In order to strengthen heat conduction, between two layers of motor main pole windings, be provided with the aluminium alloy heating panel; Also be plugged with the aluminium alloy heat sink strip at the formed delta-shaped region in the superimposed back of motor main pole winding two layer line circles simultaneously.Aluminium alloy heating panel between two layers of the aluminium alloy heat sink strip of delta-shaped region and the motor main pole windings links together, and forms the heat-transfer device of an integral body.During machine operation, the heat that the energising of stator main pole winding produces, very most of can being transmitted on this aluminium alloy plate, and the heat conducting thermal resistance of aluminium alloy is little, can effectively heat be conducted to leg-of-mutton outer surface, thus conduct heat in the cooling air.
The thermal conductivity of comparative illustration material: 50 ℃ of conductive coefficients of insulating material such as at present used mica and polyimides are 0.13～0.4W/ (mK), and aluminium alloy is 203W/ (mK)
The invention has the beneficial effects as follows: the present invention can significantly reduce to generate heat winding to the thermal resistance of the heat radiation branch road of cooling air, thereby significantly reduces winding temperature rise.The motor test result, adopt this improvement project after, motor stator main pole winding temperature rise drops to 160K by 250K, has satisfied the designing requirement that is lower than 180K.The heat sink strip of improvement project is filled up former delta-shaped region, does not change the ventilation section of motor stator, does not therefore also change the distribution of the ventilation volume of electric machine rotor, thereby the temperature rise of rotor is increased.
Description of drawings
Fig. 1 is traditional stator main pole winding construction schematic diagram.
Fig. 2 is a stator main pole coil winding construction schematic diagram of the present invention.
Fig. 3 is the whole electric machine structure schematic cross section of the present invention.
Among the figure: 1, rotor; 2, main pole core; 3, main pole winding; 4, fastening bolt; 5, support; 6, delta-shaped region; 7, stator ventilation section; 8, fastening bolt; 9, attached utmost point winding; 10, attached extremely unshakable in one's determination; 11, aluminium alloy heating panel; 12, aluminium alloy heat sink strip.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Fig. 2 has provided a kind of structure embodiment of the present invention, from accompanying drawing as can be seen, the present invention is a kind of stator main pole winding construction of direct current machine, stator main pole winding 3 adopts two-layer motor main pole around structure, and stator main pole winding is for 3 two layers after wrapping insulation respectively, directly to fit together again; In order to strengthen heat conduction, between 3 two layers of stator main pole windings, be provided with aluminium alloy heating panel 11; Also be plugged with aluminium alloy heat sink strip 12 at the formed delta-shaped region in the superimposed back of motor main pole winding 3 two layer line circles simultaneously, and the aluminium alloy heating panel 11 between two layers of the aluminium alloy heat sink strip 12 of delta-shaped region and the motor main pole windings links together, aluminium alloy heating panel 11 between two layers of aluminium alloy heat sink strip 12 by delta-shaped region and the motor main pole windings forms the heat-transfer device of an integral body, strengthens the heat radiation of stator main pole winding.
The stator main pole winding construction for heat radiating device of described direct current machine comprises electric machine stand 5, stator main pole winding 3, main pole core 2, the attached utmost point winding 9 of stator and attached extremely iron core 10, stator main pole winding 3 is fixed on the support 5 by bolt 4 by main pole core 2, the attached utmost point winding 9 of stator also is fixed on the support 5 by bolt 8 by attached extremely unshakable in one's determination 10, and they form the stator of motor jointly.Motor main pole winding 3 is closely adjacent with the attached utmost point winding 9 of stator.Middle space 7 is the ventilation section of motor stator cooling air.
Described motor stator main pole winding 3 is a two-layer structure, and two layers of the stator main pole coil winding 3 of motor are after wrapping insulation respectively, directly to fit together again; In order to strengthen heat conduction, between 3 two layers of the stator main pole coil windings of motor, be provided with aluminium alloy heating panel 11; Also be plugged with aluminium alloy heat sink strip 12 at the formed delta-shaped region 6 in the superimposed back of the stator main pole coil winding 3 two layer line circles of motor simultaneously.Aluminium alloy heating panel 11 between 3 two layers of the aluminium alloy heat sink strip 12 of delta-shaped region 6 and the motor stator main pole coil windings links together, and forms the heat-transfer device of an integral body.During machine operation, the heat that the energising of stator main pole winding produces, very most of can being transmitted on this aluminium alloy plate, and the heat conducting thermal resistance of aluminium alloy is little, can effectively heat be conducted to leg-of-mutton outer surface, thus heat is loose in cooling air.
Fig. 3 is whole electric machine structure schematic cross section.From accompanying drawing motor stator of the present invention as can be seen four windings are arranged, each winding is the structure shown in the accompanying drawing 2.
Claims (3)
1, a kind of electric machine stator winding heat dissipation method adopts two-layer motor main pole around structure, and the main pole winding is for two layers after wrapping insulation respectively, directly to fit together again; In order to strengthen heat conduction, between two layers of motor main pole windings, be provided with the aluminium alloy heating panel; Also be plugged with the aluminium alloy heat sink strip at the formed delta-shaped region in the superimposed back of motor main pole winding two layer line circles simultaneously, and the aluminium alloy heating panel between two layers of the aluminium alloy heat sink strip of delta-shaped region and the motor main pole windings links together, aluminium alloy heating panel between two layers of aluminium alloy heat sink strip by delta-shaped region and the motor main pole windings forms the heat-transfer device of an integral body, strengthens the heat radiation of stator main pole winding.
2, a kind of electric machine stator winding heat dissipation device comprises electric machine stand, stator main pole winding and main pole core, the attached utmost point winding of stator and attached extremely unshakable in one's determination; By being bolted on the support, attached utmost point winding also is fixed on the support by bolt by attached extremely iron core the main pole winding by main pole core, and they form the stator of motor jointly.Motor main pole winding is closely adjacent with attached utmost point winding, and middle space is the ventilation section of motor stator; Motor stator main pole winding is a two-layer structure, it is characterized in that: the main pole winding is for two layers after wrapping insulation respectively, directly to fit together again; Between two layers of motor main pole windings, be provided with the aluminium alloy heating panel; Also be plugged with the aluminium alloy heat sink strip at the formed delta-shaped region in the superimposed back of motor main pole winding two layer line circles simultaneously.
3, a kind of electric machine stator winding heat dissipation device as claimed in claim 2 is characterized in that: the aluminium alloy heating panel between two layers of the aluminium alloy heat sink strip of delta-shaped region and the motor main pole windings links together, and forms the heat-transfer device of an integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100428526A CN101651376B (en) | 2009-03-12 | 2009-03-12 | Electric machine stator winding heat dissipation method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100428526A CN101651376B (en) | 2009-03-12 | 2009-03-12 | Electric machine stator winding heat dissipation method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101651376A true CN101651376A (en) | 2010-02-17 |
| CN101651376B CN101651376B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100428526A Active CN101651376B (en) | 2009-03-12 | 2009-03-12 | Electric machine stator winding heat dissipation method and device |
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| CN (1) | CN101651376B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420485A (en) * | 2011-12-30 | 2012-04-18 | 南车株洲电机有限公司 | Main pole coil and direct current motor with main pole coil |
| CN103001364A (en) * | 2012-11-15 | 2013-03-27 | 中电电机股份有限公司 | Main pole coil layered structure for separately-excited direct-current motor |
| CN105790545A (en) * | 2016-04-15 | 2016-07-20 | 江苏磁谷科技股份有限公司 | High-power permanent magnetic coupler provided with single-turn wave winding |
| CN110752694A (en) * | 2019-10-21 | 2020-02-04 | 大工电机(上海)有限公司 | Motor winding direct cooling motor and cooling method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2550702A1 (en) * | 1975-11-12 | 1977-05-18 | Vyzk Vyvojovy Ustav Elektric | Homopolar generator with toothed rotor - has non-magnetic cooling elements in axial spaces on stator |
| JP3622350B2 (en) * | 1996-08-09 | 2005-02-23 | 株式会社デンソー | Rotating electric machine |
| JP2007252149A (en) * | 2006-03-17 | 2007-09-27 | Sumitomo Electric Ind Ltd | Stator of concentrated winding |
-
2009
- 2009-03-12 CN CN2009100428526A patent/CN101651376B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420485A (en) * | 2011-12-30 | 2012-04-18 | 南车株洲电机有限公司 | Main pole coil and direct current motor with main pole coil |
| CN103001364A (en) * | 2012-11-15 | 2013-03-27 | 中电电机股份有限公司 | Main pole coil layered structure for separately-excited direct-current motor |
| CN105790545A (en) * | 2016-04-15 | 2016-07-20 | 江苏磁谷科技股份有限公司 | High-power permanent magnetic coupler provided with single-turn wave winding |
| CN110752694A (en) * | 2019-10-21 | 2020-02-04 | 大工电机(上海)有限公司 | Motor winding direct cooling motor and cooling method |
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| Publication number | Publication date |
|---|---|
| CN101651376B (en) | 2012-05-30 |
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