CN202663263U - Permanent-magnet synchronous motor with air-cooling heat dissipation structure - Google Patents

Permanent-magnet synchronous motor with air-cooling heat dissipation structure Download PDF

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Publication number
CN202663263U
CN202663263U CN 201220362509 CN201220362509U CN202663263U CN 202663263 U CN202663263 U CN 202663263U CN 201220362509 CN201220362509 CN 201220362509 CN 201220362509 U CN201220362509 U CN 201220362509U CN 202663263 U CN202663263 U CN 202663263U
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China
Prior art keywords
stator
air
synchronous motor
heat dissipation
motor
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CN 201220362509
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Chinese (zh)
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樊成芳
何勤
张闯
周静
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CHENGDU LIANTENG POWER CONTROL TECHNOLOGY Co Ltd
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CHENGDU LIANTENG POWER CONTROL TECHNOLOGY Co Ltd
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Priority to CN 201220362509 priority Critical patent/CN202663263U/en
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Abstract

The utility model discloses a permanent-magnet synchronous motor with an air-cooling heat dissipation structure. The permanent-magnet synchronous motor comprises a stator body, wherein the stator body is formed by laminating stator stamped sheets, a front end cover and a rear end cover are directly mounted at the two ends of the stator body respectively, a winding iron core is formed by a toothed part of the stator body, a stator winding is mounted on the winding iron core, a motor shaft is mounted between the front end cover and the rear end cover through bearings, a rotor is arranged on the motor shaft through cold pressing, and a rotary transformer is mounted at the tail end of the motor shaft. The permanent-magnet synchronous motor is characterized in that a yoke part of the stator body is provided with a plurality of ventilation holes, the axis of the ventilation holes is parallel to that of the stator body, the ventilation holes penetrate through the whole stator body, and an air inlet and an air outlet are respectively formed on the front end cover and the rear end cover. The permanent-magnet synchronous motor with the air-cooling heat dissipation structure has the advantages that the heat dissipation capacity is increased by 2-4 times, the motor structure is more compact, the radial size of the motor is greatly reduced, the cooling medium is air, the sealing requirements are low, the manufacturing cost is reduced, and the maintenance-free effect can be basically realized during use.

Description

Permagnetic synchronous motor with air-cooled heat dissipation structure
Technical field
The utility model relates to a kind of stator improvement structure of motor, specifically refers to have the permagnetic synchronous motor of air-cooled heat dissipation structure.
Background technology
Magneto substitutes excitation winding with permanent magnet and sets up excitation field.Under the stable situation, main pole magnetic field is along with rotating magnetic field is rotated synchronously, so rotor speed also is synchronous speed, and the permanent main pole magnetic field maintenance of setting up with permanent magnet of stator rotating magnetic field is relative static, their interactions also produce electromagnetic torque, and the drive motors rotation is also carried out power conversion.
The radiating mode of at present domestic permagnetic synchronous motor substantially all adopts surface naturally cooling or cooling fluid cooling, wherein the surperficial natural type of cooling is generally the cooling surface area that increases motor, all can be on the stator outer cover thermal resistance little, the aluminium shell of good heat dissipation effect, and case surface also is distributed with fin, thermal radiation and mobile acquisition of air natural by the motor housing surface are cooled off, do not install other special cooling devices additional, the heat that produces in the 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, the heat of motor difficulty sheds, 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 is although the surperficial natural type of cooling is simple in structure, environmental suitability is strong, but its cooling effect is bad, and has the shortcoming that causes overall dimension to increase owing to increasing the surface radiating area; The cooling fluid type of cooling generally is water-cooled housing on the outer cover of motor stator, have spiral channel or axial water channel on the housing, the heat that produces in the motor operation course is taken away by the cooling fluid that circulates in the water channel, specific heat of water holds greatly, heat-sinking capability is better, radiating effect in this way better, also there are the shortcomings such as internal structure complexity, leakproof seal requirement raising, manufacturing cost increase, environmental suitability is restricted in this kind radiating mode simultaneously, cooling effect is good, but its complex structure, keep in repair constantly, environmental suitability is relatively poor.
The utility model content
The purpose of this utility model is to provide the permagnetic synchronous motor with air-cooled heat dissipation structure, solves long, total large, bad, the baroque problem of radiating effect of thermal resistance of approach of present permanent-magnetic synchronous motor stator heat radiation.
The purpose of this utility model is achieved through the following technical solutions:
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 section of stator body consists of winding iron core, at winding iron core stator winding is installed, between front end housing and rear end cap, pass through bearing mounted motor axle, rotor is colded pressing on motor shaft, at the motor the tip of the axis resolver is installed, offers a plurality of ventilation holes in the yoke section of described stator body, the axis of ventilation hole is parallel with the axis of stator body, ventilation hole runs through whole stator body, is respectively arranged with air inlet and air outlet at front end housing and rear end cap.The external structure of stator body integral body is positive six posts or positive octagon column, install and place for the ease of its shell as whole motor, 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, twines stator coil at stator tooth, at the sidewall of stator body a plurality of ventilation holes is set, ventilation hole runs through whole stator body, ventilation hole can be linear, and the axis of its axis and stator body is parallel to each other, and directly installs between front end housing and the stator body, directly install between rear end cap and the stator body, by ventilation hole the cavity that front and rear cover and stator form is communicated with; When stator winding was worked, the sense of current of stator winding changed repeatedly, can form repeatedly changing magnetic field of direction at stator body, and this magnetic field produces eddy current loss and magnetic hysteresis loss, produces heat, and this is iron loss; The heat that stator coil produces because of the electric current conduction, this is copper loss.Copper loss directly is passed to stator body with contacting of stator with 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 the 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 directly is passed to stator body, passed by stator body, reduced the path that heat transmits, reduced thermal resistance, the ability of heat radiation has been improved 2 ~ 4 times, and ventilation hole has occupied certain volume, owing to do not need to add set of shells in the stator outside in addition, so that electric machine structure is compacter, greatly dwindle the motor radial dimension; Its coolant is that air so its leak that seal request is low than the cooling fluid cooling structure, manufacturing cost reduces, it is non-maintaining in use substantially can to realize, 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, needing the long-pending ratio of the control 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 the heat transfer effect of the best, the heat of discharge stator as much as possible adopts air inlet and the cornerwise distribution form of air outlet, can improve radiating effect.
The utility model compared with prior art has following advantage and beneficial effect:
1 the utlity model 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 directly is passed to stator body, passed by stator body, reduced the path that heat transmits, reduced thermal resistance, the ability of heat radiation 2 ~ 4 times have been improved, and, ventilation hole has occupied certain volume, owing to do not need to add set of shells in the stator outside in addition, so that electric machine structure is compacter, greatly dwindle the motor radial dimension; Its coolant is that air so its leak that seal request is low than the cooling fluid cooling structure, manufacturing cost reduces, it is non-maintaining in use substantially can to realize, environmental suitability is strong;
2 the utlity model has the permagnetic synchronous motor of air-cooled heat dissipation structure, and simple in structure, processing technology is simpler, and cost is lower;
3 the utlity model has the permagnetic synchronous motor of air-cooled heat dissipation structure, and easy to assembly, technique is simple, have not had shell and fin, and weight is lighter, and complete machine is with low cost, are suitable for promoting.
Description of drawings
Fig. 1 is the utility model external structure schematic diagram;
Fig. 2 is that the utility model partly cuts open structural representation;
Fig. 3 is the utility model stator body structural representation.
Mark and corresponding parts title in the accompanying drawing:
The 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
The utility model is described in further detail below in conjunction with embodiment, but execution mode of the present utility model is not limited to this.
Embodiment
As shown in Figures 1 to 3, the utlity model has the permagnetic synchronous motor of air-cooled heat dissipation structure, comprise the front end housing 4 that connects 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, install and place for the ease of its shell as whole motor, 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, be wound with stator winding 12 at stator tooth, rotor 8 is colded pressing and is formed armature spindle at motor shaft 10, armature spindle is fixed between front end housing 4 and the rear end cap 6 by front and back bearings 11, at motor shaft 10 ends resolver 5 is installed, yoke section at stator body 1 arranges a plurality of ventilation holes 3, ventilation hole 3 is communicated with two end faces of stator body 1, ventilation hole 3 can be linear, then 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%; Form cavity between front end housing 4 and the stator body 1, form cavity between rear end cap 6 and the stator body 1, by ventilation hole 3 two cavitys are communicated with, be provided with air inlet 9 at front end housing 4, set out air port 7 at rear end cap 6, air inlet 9 and air outlet 7 are positioned on the diagonal of motor.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, any simple modification, the equivalent variations on every foundation technical spirit of the present utility model above embodiment done all fall within the protection range of the present utility model.

Claims (5)

1. the permagnetic synchronous motor that has 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 section of stator body (1) consists of winding iron core, at winding iron core stator winding (12) is installed, 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), end at motor shaft (10) is equipped with resolver (5), it is characterized in that: the yoke section at described stator body (1) offers 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), is respectively arranged with air inlet (9) and air outlet (7) at front end housing (4) and rear end cap (6).
2. the permagnetic synchronous motor with air-cooled heat dissipation structure according to claim 1, it is characterized in that: the cross section of described ventilation hole (3) is arbitrary shape, 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, it is characterized in that: described ventilation hole (3) is evenly distributed on the sidewall of stator body (1).
4. the described permagnetic synchronous motor with air-cooled heat dissipation structure of any one in 3 according to claim 1 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, it is characterized in that: described air inlet (9) and air outlet (7) lay respectively on the diagonal of permagnetic synchronous motor.
CN 201220362509 2012-07-25 2012-07-25 Permanent-magnet synchronous motor with air-cooling heat dissipation structure Active CN202663263U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220362509 CN202663263U (en) 2012-07-25 2012-07-25 Permanent-magnet synchronous motor with air-cooling heat dissipation structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220362509 CN202663263U (en) 2012-07-25 2012-07-25 Permanent-magnet synchronous motor with air-cooling heat dissipation structure

Publications (1)

Publication Number Publication Date
CN202663263U true CN202663263U (en) 2013-01-09

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Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103580421A (en) * 2012-07-25 2014-02-12 成都联腾动力控制技术有限公司 Permanent magnet synchronous motor with air-cooling heat-dissipating structure
CN105827054A (en) * 2016-03-17 2016-08-03 周利 Motor capable of self cooling and ventilation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103580421A (en) * 2012-07-25 2014-02-12 成都联腾动力控制技术有限公司 Permanent magnet synchronous motor with air-cooling heat-dissipating structure
CN105827054A (en) * 2016-03-17 2016-08-03 周利 Motor capable of self cooling and ventilation

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