CN103580421A - Permanent magnet synchronous motor with air-cooling heat-dissipating structure - Google Patents
Permanent magnet synchronous motor with air-cooling heat-dissipating structure Download PDFInfo
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- CN103580421A CN103580421A CN201210259196.7A CN201210259196A CN103580421A CN 103580421 A CN103580421 A CN 103580421A CN 201210259196 A CN201210259196 A CN 201210259196A CN 103580421 A CN103580421 A CN 103580421A
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Abstract
The invention discloses a permanent magnet synchronous motor with an air-cooling heat-dissipating structure. The permanent magnet synchronous motor comprises a stator body, the stator body is formed by overlaying stator punching sheets, a front end cover and a rear end cover are directly installed at the two ends of the stator body respectively, a tooth part of the stator body forms a winding iron core, a stator winding is installed on the winding iron core, a motor shaft is installed between the front end cover and the rear end cover through bearings, a rotor is arranged on the motor shaft in a cold pressing mode, and a rotary transformer is installed at the tail end of the motor shaft. The permanent magnet synchronous motor with the air-cooling heat-dissipating structure is characterized in that a plurality of vent holes are formed in a yoke part of the stator body, the axes of the vent holes are parallel with the axis of the stator body, the vent holes penetrate through the whole stator body, and an air inlet and an air outlet are formed in the front end cover and the rear end cover respectively. The heat dissipating capacity of the permanent magnet synchronous motor is improved by 2-4 times, the motor is more compact in structure, and the radial size of the motor is greatly reduced; because the cooling medium of the motor is air, the motor is low in sealing requirement and can be free from maintenance basically in the using process, and the manufacturing cost is reduced.
Description
Technical field
The present invention relates to a kind of stator improvement structure of motor, specifically refer to the permagnetic synchronous motor with air-cooled heat dissipation structure.
Background technology
Magneto substitutes excitation winding with permanent magnet and sets up excitation field.Under stable situation, main pole magnetic field is along with rotating magnetic field is synchronously rotated, so rotor speed is also synchronous speed, and the permanent main pole magnetic field maintenance of setting up with permanent magnet of stator rotating magnetic field is relative static, between them, interact and produce electromagnetic torque, drive motors rotates and carries out power conversion.
The radiating mode of at present domestic permagnetic synchronous motor substantially all adopts surperficial naturally cooling or cooling fluid is cooling, wherein the surperficial natural type of cooling is generally the cooling surface area that increases motor, all can be in stator outer cover thermal resistance little, the aluminium shell of good heat dissipation effect, and case surface is also distributed with fin, thermal radiation and the mobile acquisition of air natural by motor housing surface are cooling, do not install other special cooling devices additional, the heat producing in motor operation course passes through iron core, winding, the passages such as shell outwards distribute, radially the long total thermal resistance of motor that causes of heat dissipation channel is larger, more difficult the shedding of heat of motor, thereby cause radiating effect undesirable, but, this radiating mode has simple in structure, substantially need not safeguard, low cost of manufacture, the advantage that environmental suitability is strong, although the natural type of cooling in surface is simple in structure, environmental suitability is strong, but its cooling effect is bad, and there is the shortcoming that causes overall dimension to increase owing to will increasing surface radiating area, the cooling fluid type of cooling is generally water-cooled housing in the outer cover of motor stator, on housing, there is spiral channel or axial water channel, the heat producing in motor operation course is taken away by the cooling fluid circulating in water channel, specific heat of water holds greatly, heat-sinking capability is better, radiating effect in this way better, also there is the shortcomings such as internal structure complexity, leakproof seal requirement raising, manufacturing cost increase, environmental suitability is restricted in this kind of radiating mode simultaneously, cooling effect is good, but its complex structure, keep in repair constantly, environmental suitability is poor.
Summary of the invention
The object of the present invention is to provide the permagnetic synchronous motor with air-cooled heat dissipation structure, solve that the thermal resistance that the approach of current permanent-magnetic synchronous motor stator heat radiation is long, total is large, bad, the baroque problem of radiating effect.
Object of the present invention is achieved through the following technical solutions:
The permagnetic synchronous motor with air-cooled heat dissipation structure, comprise stator body, stator body is overrided to form by stator punching, front end housing and rear end cap are directly installed respectively in two ends, the tooth portion of stator body forms winding iron core, stator winding is installed on winding iron core, between front end housing and rear end cap, pass through bearing mounted motor axle, rotor is colded pressing on motor shaft, on motor the tip of the axis, resolver is installed, in the yoke portion of described stator body, offer a plurality of ventilation holes, the axis of ventilation hole is parallel with the axis of stator body, ventilation hole runs through whole stator body, on front end housing and rear end cap, be respectively arranged with air inlet and air outlet.The external structure of stator body integral body is positive six posts or positive octagon column, for the ease of its shell as whole motor, install and place, adopt positive six posts or positive octagon column structure, also can adopt cylindrical other structure such as grade, stator body is overrided to form by stator punching, its inside is cavity structure, this cavity is cylinder, cavity is coaxial with stator body, stator tooth forms the skeleton unshakable in one's determination of stator winding, on stator tooth, be wound around stator coil, a plurality of ventilation holes are set on the sidewall of stator body, ventilation hole runs through whole stator body, ventilation hole can be linear, the axis of its axis and stator body is parallel to each other, between front end housing and stator body, directly install, between rear end cap and stator body, directly install, cavity front and rear cover being formed with stator by ventilation hole is communicated with, when stator winding is worked, the sense of current of stator winding changes repeatedly, can on stator body, form ，Gai magnetic field, magnetic field generation eddy current loss and magnetic hysteresis loss that direction changes repeatedly, produces heat, and this is iron loss, the heat that stator coil produces because of electric current conduction, this is copper loss.Copper loss is directly passed to stator body with contacting of stator by heat by coil, when running up, the iron loss that stator body produces also strengthens thereupon, these heats pass to air by the ventilation hole of stator body, and discharged by the air outlet on rear end cap, with respect to conventional motors by stator winding, stator case, electric machine casing, the mode of fin heat radiation, the heat of stator winding is directly passed to stator body, by stator body, passed, reduced the path that heat transmits, reduced thermal resistance, the ability of heat radiation has been improved to 2 ~ 4 times, and, ventilation hole has occupied certain volume, owing to not needing to add set of shells in stator outside in addition, make electric machine structure compacter, greatly dwindle motor radial dimension, its coolant is that air so its leak that seal request is low compared with cooling fluid cooling structure, manufacturing cost reduces, it is non-maintaining in use substantially can to realize, and environmental suitability is strong.
The cross section of described ventilation hole is arbitrary shape, and its sidewall equates with the distance of stator punching.
Described ventilation hole is evenly distributed on the sidewall of stator body.
The long-pending sum of described ventilation hole plane of structure be stator body sidewall plane of structure long-pending 30%～55%.Further, as the optimal design of ventilation hole, need to control the long-pending ratio of the total cross-sectional area of ventilation hole and stator body sidewall plane of structure is 30～55:100.
Described air inlet and air outlet lay respectively on the diagonal of permagnetic synchronous motor.For best heat transfer effect, the heat of many discharge stators, adopts air inlet and the cornerwise distribution form of air outlet as far as possible, can improve radiating effect.
The present invention compared with prior art, has following advantage and beneficial effect:
1 the present invention has the permagnetic synchronous motor of air-cooled heat dissipation structure, the mode by stator winding, stator case, electric machine casing, fin heat radiation with respect to conventional motors, the heat of stator winding is directly passed to stator body, by stator body, passed, reduced the path that heat transmits, reduced thermal resistance, the ability of heat radiation has been improved to 2 ~ 4 times, and, ventilation hole has occupied certain volume, owing to not needing to add set of shells in stator outside in addition, make electric machine structure compacter, greatly dwindle motor radial dimension; Its coolant is that air so its leak that seal request is low compared with cooling fluid cooling structure, manufacturing cost reduces, it is non-maintaining in use substantially can to realize, and environmental suitability is strong;
2 the present invention have the permagnetic synchronous motor of air-cooled heat dissipation structure, simple in structure, and processing technology is simpler, and cost is lower;
3 the present invention have the permagnetic synchronous motor of air-cooled heat dissipation structure, easy to assembly, and technique is simple, there is no shell and fin, and weight is lighter, and complete machine is with low cost, are suitable for promoting.
Accompanying drawing explanation
Fig. 1 is external structure schematic diagram of the present invention;
Fig. 2 is that the present invention partly cuts open structural representation;
Fig. 3 is stator body structural representation of the present invention.
Mark and corresponding parts title in accompanying drawing:
1-stator body, 2-stator punching, 3-ventilation hole, 4-front end housing, 5-resolver, 6-rear end cap, 7-air outlet, 8-rotor, 9-air inlet, 10-motor shaft, 11-bearing, 12-stator winding.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figures 1 to 3, the present invention has the permagnetic synchronous motor of air-cooled heat dissipation structure, comprise the front end housing 4 connecting successively, stator body 1, and rear end cap 6, stator body 1 is overrided to form by stamping forming stator punching 2, whole external structure is positive six posts, for the ease of its shell as whole motor, install and place, also can adopt positive octagon column, cylindrical other structure such as grade, the inside of stator body 1 is cavity structure, this cavity is cylinder, cavity is coaxial with stator body 1, stator tooth forms the skeleton unshakable in one's determination of stator winding, on stator tooth, be wound with stator winding 12, rotor 8 is colded pressing and form armature spindle on motor shaft 10, armature spindle is fixed between front end housing 4 and rear end cap 6 by front and back bearings 11, on motor shaft 10 ends, resolver 5 is installed, a plurality of ventilation holes 3 are set in the yoke portion of stator body 1, ventilation hole 3 is communicated with two end faces of stator body 1, ventilation hole 3 can be linear, the axis of its axis and stator body 1 is parallel to each other, the long-pending sum of ventilation hole 3 plane of structures be stator body 1 sidewall plane of structure long-pending 30%～55%, between front end housing 4 and stator body 1, form cavity, between rear end cap 6 and stator body 1, form cavity, by ventilation hole 3, two cavitys are communicated with, on front end housing 4, be provided with air inlet 9, on rear end cap 6, set out air port 7, air inlet 9 and air outlet 7 are positioned on the diagonal of motor.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction, and any simple modification, the equivalent variations in every foundation technical spirit of the present invention, above embodiment done, within all falling into protection scope of the present invention.
Claims (5)
1. the permagnetic synchronous motor with air-cooled heat dissipation structure, comprise stator body (1), stator body (1) is overrided to form by stator punching (2), front end housing (4) and rear end cap (6) are directly installed respectively in two ends, the tooth portion of stator body (1) forms winding iron core, stator winding (12) is installed on winding iron core, between front end housing (4) and rear end cap (6), pass through bearing (11) mounted motor axle (10), rotor (8) is colded pressing on motor shaft (10), resolver (5) is installed on the end of motor shaft (10), it is characterized in that: in the yoke portion of described stator body (1), offer a plurality of ventilation holes (3), the axis of ventilation hole (3) is parallel with the axis of stator body (1), ventilation hole (3) runs through whole stator body (1), on front end housing (4) and rear end cap (6), be respectively arranged with air inlet (9) and air outlet (7).
2. the permagnetic synchronous motor with air-cooled heat dissipation structure according to claim 1, is characterized in that: the cross section of described ventilation hole (3) is arbitrary shape, and its sidewall equates with the distance of stator punching (2).
3. the permagnetic synchronous motor with air-cooled heat dissipation structure according to claim 2, is characterized in that: described ventilation hole (3) is evenly distributed on the sidewall of stator body (1).
4. according to the permagnetic synchronous motor with air-cooled heat dissipation structure described in any one in claims 1 to 3, it is characterized in that: the long-pending sum of described ventilation hole plane of structure be stator body (1) sidewall plane of structure long-pending 30%～55%.
5. the permagnetic synchronous motor with air-cooled heat dissipation structure according to claim 4, is characterized in that: described air inlet (9) and air outlet (7) lay respectively on the diagonal of permagnetic synchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210259196.7A CN103580421A (en) | 2012-07-25 | 2012-07-25 | Permanent magnet synchronous motor with air-cooling heat-dissipating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210259196.7A CN103580421A (en) | 2012-07-25 | 2012-07-25 | Permanent magnet synchronous motor with air-cooling heat-dissipating structure |
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| CN103580421A true CN103580421A (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210259196.7A Pending CN103580421A (en) | 2012-07-25 | 2012-07-25 | Permanent magnet synchronous motor with air-cooling heat-dissipating structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467275A (en) * | 2014-12-17 | 2015-03-25 | 江麓机电集团有限公司 | Multifunctional integrated electric driver |
| CN108768011A (en) * | 2018-05-02 | 2018-11-06 | 浙江大学 | A kind of motor stator cooling structure |
| US11549513B2 (en) | 2017-06-20 | 2023-01-10 | Dyson Technology Limited | Compressor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07177689A (en) * | 1993-12-20 | 1995-07-14 | Fanuc Ltd | Motor |
| EP0735648B1 (en) * | 1995-03-25 | 2000-09-13 | Thyssen Aufzugswerke GmbH | Gearless traction-type hoisting device |
| CN201341077Y (en) * | 2008-12-26 | 2009-11-04 | 华中科技大学 | Outer rotor direct drive permanent-magnet synchronizing torque servomotor |
| CN101645629A (en) * | 2009-09-10 | 2010-02-10 | 华中科技大学 | Self-ventilation cooling device of external rotor permanent magnet synchronous machine |
| CN201409021Y (en) * | 2009-05-06 | 2010-02-17 | 福建联合动力设备制造有限公司 | Stator core with ventilation holes |
| CN202026203U (en) * | 2011-05-05 | 2011-11-02 | 株洲南车时代电气股份有限公司 | Permanent magnetic synchronized traction motor with air cooling structure |
| CN202663263U (en) * | 2012-07-25 | 2013-01-09 | 成都联腾动力控制技术有限公司 | Permanent-magnet synchronous motor with air-cooling heat dissipation structure |
-
2012
- 2012-07-25 CN CN201210259196.7A patent/CN103580421A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07177689A (en) * | 1993-12-20 | 1995-07-14 | Fanuc Ltd | Motor |
| EP0735648B1 (en) * | 1995-03-25 | 2000-09-13 | Thyssen Aufzugswerke GmbH | Gearless traction-type hoisting device |
| CN201341077Y (en) * | 2008-12-26 | 2009-11-04 | 华中科技大学 | Outer rotor direct drive permanent-magnet synchronizing torque servomotor |
| CN201409021Y (en) * | 2009-05-06 | 2010-02-17 | 福建联合动力设备制造有限公司 | Stator core with ventilation holes |
| CN101645629A (en) * | 2009-09-10 | 2010-02-10 | 华中科技大学 | Self-ventilation cooling device of external rotor permanent magnet synchronous machine |
| CN202026203U (en) * | 2011-05-05 | 2011-11-02 | 株洲南车时代电气股份有限公司 | Permanent magnetic synchronized traction motor with air cooling structure |
| CN202663263U (en) * | 2012-07-25 | 2013-01-09 | 成都联腾动力控制技术有限公司 | Permanent-magnet synchronous motor with air-cooling heat dissipation structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467275A (en) * | 2014-12-17 | 2015-03-25 | 江麓机电集团有限公司 | Multifunctional integrated electric driver |
| CN104467275B (en) * | 2014-12-17 | 2017-01-04 | 江麓机电集团有限公司 | A kind of integral-type electric driver |
| US11549513B2 (en) | 2017-06-20 | 2023-01-10 | Dyson Technology Limited | Compressor |
| CN108768011A (en) * | 2018-05-02 | 2018-11-06 | 浙江大学 | A kind of motor stator cooling structure |
| CN108768011B (en) * | 2018-05-02 | 2024-04-05 | 浙江大学 | Motor stator cooling structure |
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Application publication date: 20140212 |