CN202663264U - Air-cooled heat radiating structure of permanent magnet synchronous motor stator - Google Patents
Air-cooled heat radiating structure of permanent magnet synchronous motor stator Download PDFInfo
- Publication number
- CN202663264U CN202663264U CN 201220362495 CN201220362495U CN202663264U CN 202663264 U CN202663264 U CN 202663264U CN 201220362495 CN201220362495 CN 201220362495 CN 201220362495 U CN201220362495 U CN 201220362495U CN 202663264 U CN202663264 U CN 202663264U
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- Prior art keywords
- stator
- air
- stator body
- cooled heat
- synchronous motor
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- Expired - Fee Related
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- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model discloses an air-cooled heat radiating structure of a permanent magnet synchronous motor stator, comprising a stator body, wherein the outer part of the stator body is of a regular hexahedral or regular octahedral cylinder structure, the stator body is internally hollow and formed with a cylindrical chamber, and the stator body is formed by overlapping stator punches which are formed through stamping. The air-cooled heat radiating structure of the permanent magnet synchronous motor stator is characterized in that a stator tooth yoke part of the stator body is provided with a plurality of air vents, the axes of the air vents are parallel to the axis of the stator body, and the plurality of air vents pass through the stator body. The air-cooled heat radiating structure is transferred through the stator body, so that the heat transferring path is reduced, the heat resistance is reduced, and the heat radiating capacity is improved by 2-4 times; the air vents occupy a certain volume, and a shell outside the stator is not needed to be additionally sleeved, so that the motor is more compact in structure, and the radial size of the motor is greatly reduced; and air is used as the cooling medium, so that the leakage sealing requirement is lower than that of a cooling liquid cooling structure, the manufacturing cost is reduced, non-maintenance is basically realized in the using process, and the air-cooled heat radiating structure has strong environmental suitability.
Description
Technical field
The utility model relates to a kind of stator improvement structure of motor, specifically refers to the air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator.
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 will 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 air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator, solves that long, the total thermal resistance of the approach of present permanent-magnetic synchronous motor stator heat radiation is large, bad, the baroque problem of radiating effect.
The purpose of this utility model is achieved through the following technical solutions:
The air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator, comprise stator body, the stator body outside is positive six posts or positive octagon column structure, its inner hollow forms cylindrical cavity, stator body is overrided to form by stamping forming stator punching, stator tooth yoke section at described stator body is provided with a plurality of ventilation holes, and the axis of ventilation hole is parallel with the axis of stator body, and a plurality of ventilation holes run through stator body.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, the shell that itself can be used as motor uses, and also can carry out hot jacket or cold-pressing assembly with other housings, and the inside of stator body is cavity structure, this cavity is cylinder, and cavity is coaxial with stator body.Stator body forms by the stator punching stack is rear, the stator punching profile is identical with the stator cross section, stator coil can adopt concentrates winding or distributed winding pattern, yoke section at stator body arranges a plurality of ventilation holes, 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.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 are discharged by the ventilation hole of stator body, with respect to conventional motors by stator winding, stator case, the motor object, 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 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.
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.
The utility model compared with prior art has following advantage and beneficial effect:
The air-cooled heat dissipation structure of 1 the utility model permanent-magnetic synchronous motor stator, 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 not needing 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 air-cooled heat dissipation structure of 2 the utility model permanent-magnetic synchronous motor stators, simple in structure, processing technology is simpler, and cost is lower;
The air-cooled heat dissipation structure of 3 the utility model permanent-magnetic synchronous motor stators, easy to assembly, technique is simple, has not had shell and fin, and weight is lighter, and complete machine is with low cost, is suitable for promoting.
Description of drawings
Fig. 1 is the utility model structural representation.
Mark and corresponding parts title in the accompanying drawing:
The 1-stator body, 2-stator punching, 3-ventilation hole.
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 Figure 1, the air-cooled heat dissipation structure of the utility model permanent-magnetic synchronous motor stator, comprise stator body 1, the external structure of stator body 1 integral body 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 shell that itself can be used as motor uses, also can carry out hot jacket or cold-pressing assembly with other housings, the inside of stator body 1 is cavity structure, this cavity is cylinder, cavity is coaxial with stator body 1, and stator body is by rear formation of stator punching 2 stacks, and the stator punching profile is identical with the stator cross section, stator coil can adopt concentrates winding or distributed winding pattern, yoke section at stator body 1 arranges a plurality of ventilation holes 3, and ventilation hole 3 runs through whole stator body, and ventilation hole 3 is linear, the axis of its axis and stator body 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%.
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 (4)
1. the air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator, comprise stator body (1), stator body (1) outside is positive six posts or positive octagon column structure, its inner hollow forms cylindrical cavity, stator body (1) is overrided to form by stamping forming stator punching (2), it is characterized in that: the stator tooth yoke section at described stator body (1) is provided with a plurality of ventilation holes (3), the axis of ventilation hole (3) is parallel with the axis of stator body (1), and a plurality of ventilation holes (3) run through stator body (1).
2. the air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator 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 air-cooled heat dissipation structure of permanent-magnetic synchronous motor stator 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 air-cooled heat dissipation structure of the described permanent-magnetic synchronous motor stator 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%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220362495 CN202663264U (en) | 2012-07-25 | 2012-07-25 | Air-cooled heat radiating structure of permanent magnet synchronous motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220362495 CN202663264U (en) | 2012-07-25 | 2012-07-25 | Air-cooled heat radiating structure of permanent magnet synchronous motor stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202663264U true CN202663264U (en) | 2013-01-09 |
Family
ID=47458141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220362495 Expired - Fee Related CN202663264U (en) | 2012-07-25 | 2012-07-25 | Air-cooled heat radiating structure of permanent magnet synchronous motor stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202663264U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580422A (en) * | 2012-07-25 | 2014-02-12 | 成都联腾动力控制技术有限公司 | Air-cooling heat dissipation structure of permanent magnet synchronous motor stator |
| WO2017161721A1 (en) * | 2016-03-24 | 2017-09-28 | Robert Bosch Gmbh | Stator lamination and electrical machine |
-
2012
- 2012-07-25 CN CN 201220362495 patent/CN202663264U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580422A (en) * | 2012-07-25 | 2014-02-12 | 成都联腾动力控制技术有限公司 | Air-cooling heat dissipation structure of permanent magnet synchronous motor stator |
| WO2017161721A1 (en) * | 2016-03-24 | 2017-09-28 | Robert Bosch Gmbh | Stator lamination and electrical machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20150725 |
|
| EXPY | Termination of patent right or utility model |