CN101645632B - Stator water cooling device of external rotor permanent magnet synchronous machine - Google Patents
Stator water cooling device of external rotor permanent magnet synchronous machine Download PDFInfo
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- CN101645632B CN101645632B CN2009103068113A CN200910306811A CN101645632B CN 101645632 B CN101645632 B CN 101645632B CN 2009103068113 A CN2009103068113 A CN 2009103068113A CN 200910306811 A CN200910306811 A CN 200910306811A CN 101645632 B CN101645632 B CN 101645632B
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Abstract
The invention provides a stator water cooling device of an external rotor permanent magnet synchronous machine. An internal group of ring-shaped cooling water channels and an external group of ring-shaped cooling water channel are installed on the stator iron centre with a shaft of an machine as the center; two groups of ring-shaped cooling water channels are both formed by uniformly distributing at least six pipelines as a ring; a first and a second ring-shaped channels respectively communicated with the internal and external groups of cooling water channels are installed in a back end cover of the machine; a third ring-shaped channel communicated with the internal and external groups of cooling water channels is installed at the front end cover of the machine; a water inlet channel and a water outlet channel are installed in the shaft of the machine, the water inlet channel is communicated with the first ring-shaped channel, and the water outlet channel is communicated with the second ring-shaped channel. The invention can directly cool the inner heat source of the external rotor, and has the characteristics of quick cooling speed, high efficiency, compact structure, simple and convenient technology.
Description
Technical field
The present invention relates to motor cooling technology field, be specifically related to a kind of stator water-cooling structure of outer rotor permanent magnet motor.
Background technology
Permagnetic synchronous motor is a kind of direct-drive type moment servomotor that is widely used in fields such as mechanical industry, electric vehicle, household electrical appliance, manufacturing equipment.
Traditional middle and small motor caloric value is few, and heat radiation is very little to the motor performance influence.But for the alternating-current permanent-magnet servo motor of high torque density, the motor radiating ability directly affects motor and uses and service life, and can the type of cooling and structure satisfy heat radiation and require to seem particularly important.Therefore for outer-rotor permanent magnet motor, the heat radiation of stator is more more difficult than internal rotor permanent magnet motor, need research and develop efficiently cooling system to reduce the machine operation temperature.
Because good cooling results can not cooled off when motor does not move yet, water-cooling pattern is used widely gradually.External water-cooled machine has been applied on subway, the urban light rail vehicle, and domestic also have experimental application in recent years in motor vehicle.Water-cooling pattern or offer water channel at fuselage, or embedded set copper pipe require water circuit system to have excellent sealing performance.
Chinese invention patent 200510032536.2 discloses a kind of drive motors stator water-cooling method and device, adopt the stator internal water cooling method, whole water cooling plant comprises out frame and cooling water channel, and the cooling water channel in the out frame is arranged along the axial round about manner of anchor ring in the stator seat ring.Chinese invention patent 200710120828.0 discloses a kind of linear motor radiator, cooling water pipe inserts in the unwrapping wire groove unshakable in one's determination near coil, be communicated with by connector between cooling water pipe, two cooling passages of the cooling water pipe other end are connected by the external communications device, water inlet, delivery port with cooling fluid constitutes cooling circuit then, be communicated with the recirculation cooler of outside again, to finish direct cooling linear electric motors.
Above-mentioned two kinds of water-cooling system compact conformations, cooling rate is fast, and the former offers the water route based on surface cool in motor, the structure more complicated, difficulty of processing is big; Latter's cooling water pipe is placed in the groove, directly contacts with coil, and cooling range has significant limitation.These two kinds of types of cooling can satisfy the cooling requirement of general inner rotor motor, but for external rotor electric machine, the built-in feasible heat radiation of stator is more difficult, and the magneto finite volume of high power density, also there is deficiency in surface-cooled effect.
Summary of the invention
The object of the present invention is to provide the stator water cooling device of the external rotor permanent magnet synchronous machine of a kind of good cooling results, compact conformation.
A kind of stator water cooling device of external rotor permanent magnet synchronous machine in stator core is group ring-type cooling water channel and outer group ring-type cooling water channel in the center is provided with the motor shaft, and two groups of ring-type cooling water channels are by at least six pipelines formation that evenly distributes in the form of a ring; Be provided with the first, the second annular channel in back end cover for motor, the first, two annular channel is organized cooling water channel outward and is communicated with respectively with interior; In the motor front end housing, be provided with the 3rd annular channel, the 3rd annular channel with in, outer two groups of cooling water channels all are communicated with; Be provided with intake tunnel and exhalant canal in the motor shaft, intake tunnel is communicated with first annular channel, and exhalant canal is communicated with second annular channel.
Beneficial effect of the present invention is embodied in: one, cooling water pipe directly embeds stator core inside, and heat unshakable in one's determination can be taken away to greatest extent by the cooling fluid in the cooling copper tube; Two, cooling water water inlet copper pipe and stator winding close together are convenient to directly cool off stator winding; Three, annular channel is near the end winding, and the heat that the end winding produces also can be taken away by cooling fluid.In sum, structure of the present invention can reach the purpose of direct cooling external rotor electric machine internal heat resource, has that cooling rate is fast, efficient is high, a compact conformation, characteristics that technology is easy.
Description of drawings
The water cooling plant structural representation that Fig. 1 shows for the motor longitudinal profile.
The stator core through hole schematic diagram that Fig. 2 shows for the motor horizontal section.
Fig. 3 is the longitudinal profile structural representation of rear end cap clip plate.
Fig. 4 is the longitudinal profile structural representation of front end housing clip plate.
Embodiment
Below in conjunction with accompanying drawing embodiment is elaborated.
The water cooling plant structural representation that Fig. 1 shows for the motor longitudinal profile, water cooling plant comprises: inside and outside group of cooling copper tube, first annular channel 4, second annular channel 5, the 3rd annular channel 6, intake tunnel 8 and exhalant canal 7.
Stator core 1 is enclosed within on the motor shaft 2, and having 9, two groups of through holes 9 of inside and outside two groups of through holes in stator core all is that the center evenly distributes in the form of a ring with the motor shaft, referring to Fig. 2.Insert cooling copper tube 3 in the through hole, can between copper pipe 3 and through-hole wall, fill the good filler of thermal conductivity (for example boron nitride, aluminium oxide etc.).Copper pipe 3 is as the cooling water channel passage of stator core, and the number of openings of every group of through hole is determined according to cooling requirement, is generally 6～10.
As shown in Figure 3, in rear end cap, be with the first ring-type pressure plates I, the second ring-type pressure plates II, the 3rd ring-type pressure plates II I on the motor shaft 3 successively.The equal diameters of the first ring-type pressure plates I and the 3rd ring-type pressing plate, the diameter of the second ring-type pressing plate is less than the 3rd ring-type pressing plate.Wherein, the first ring-type pressure plates I forms the sealing ring passage that diameter is less near a side of stator core between the second and first ring-type pressure plates I, constitute first annular channel 4; Form the sealing ring passage that diameter is bigger between the second ring-type pressing plate and the first ring-type pressure plates I, the 3rd ring-type pressing plate, constitute second annular channel 5.Copper pipe in first annular channel 4 and the interior group of through hole is connected, and the interior copper pipe of second annular channel 5 and outer group through hole is connected.
As shown in Figure 4, be with the 4th and the 5th pressure plates I V, V on the motor shaft in front end housing 3.The 4th pressing plate forms the annular channel of sealing near the opposite side of stator core between the 4th and the 5th pressing plate, constitute the 3rd annular channel 6.Copper pipe in the 3rd annular channel 6 and the inside and outside two groups of through holes all is communicated with.
Have intake tunnel 8 and exhalant canal 7 in motor shaft, intake tunnel 8 is communicated with second annular channel 5, and exhalant canal 7 is communicated with first annular channel 4.
The flow process of cooling fluid in cooling water channel is: cooling fluid stream successively through intake tunnel 8, second annular channel 5, outside organize cooling copper tube and enter the 3rd annular channel 6, more successively through interior group of cooling copper tube, first annular channel 4, that exhalant canal 7 is discharged motors is external.Cooling fluid is taken away the heat of stator core successively through outer group cooling copper tube and interior group of cooling copper tube, realizes cooling.
Claims (3)
1. the stator water cooling device of an external rotor permanent magnet synchronous machine, in stator core be group ring-type cooling water channel and outer group ring-type cooling water channel in the center is provided with the motor shaft, two groups of ring-type cooling water channels are the center formation that evenly distributes in the form of a ring with the motor shaft by at least six pipelines; Be provided with the first, the second annular channel in back end cover for motor, the first, two annular channel is organized the ring-type cooling water channel outward and is communicated with respectively with interior; In the motor front end housing, be provided with the 3rd annular channel, the 3rd annular channel with in, outer two groups of ring-type cooling water channels all are communicated with; Be provided with intake tunnel and exhalant canal in the motor shaft, intake tunnel is communicated with first annular channel, and exhalant canal is communicated with second annular channel;
Described first, the implementation of second annular channel is: be with first, second and third ring-type pressing plate on the motor shaft in back end cover for motor successively, the first ring-type pressing plate is near stator core, form first annular channel of sealing between the second and first ring-type pressing plate, form second annular channel of sealing between the 3rd and the first, the two ring-type pressing plate.
2. stator water cooling device according to claim 1, it is characterized in that, the implementation of described the 3rd annular channel is: be with the 4th on the motor shaft in the motor front end housing, five rings shape pressing plate, Fourth Ring shape pressing plate is near stator core, the 4th, form the 3rd annular channel that seals between the shape pressing plate of five rings.
3. stator water cooling device according to claim 1 is characterized in that, described in, the pipeline of organizing the ring-type cooling water channel outward adopts copper pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103068113A CN101645632B (en) | 2009-09-10 | 2009-09-10 | Stator water cooling device of external rotor permanent magnet synchronous machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103068113A CN101645632B (en) | 2009-09-10 | 2009-09-10 | Stator water cooling device of external rotor permanent magnet synchronous machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101645632A CN101645632A (en) | 2010-02-10 |
| CN101645632B true CN101645632B (en) | 2011-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103068113A Expired - Fee Related CN101645632B (en) | 2009-09-10 | 2009-09-10 | Stator water cooling device of external rotor permanent magnet synchronous machine |
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| CN (1) | CN101645632B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386718A (en) * | 2010-08-31 | 2012-03-21 | 付强 | Motor cooling system |
| CN102324796B (en) * | 2011-09-15 | 2013-06-26 | 东莞市伊动新能源科技有限公司 | Liquid-cooled radiating external rotor motor |
| CN103448531B (en) * | 2013-08-15 | 2015-04-15 | 安徽工程大学 | Electric driving wheel with cooling function |
| CN105226856B (en) * | 2015-10-26 | 2017-12-19 | 刘庆华 | Full energy-saving power machine |
| CN106899130A (en) * | 2015-12-18 | 2017-06-27 | 贵阳航空电机有限公司 | Circulating cooling type motor housing |
| CN105790509A (en) * | 2016-04-07 | 2016-07-20 | 重庆大学 | Micro-flow-path-channel-based auxiliary cooling system for operation power apparatus |
| CN106026449B (en) * | 2016-05-18 | 2018-05-08 | 中车株洲电机有限公司 | External rotor electric machine cooling device |
| CN106849509B (en) * | 2017-04-25 | 2023-06-06 | 沈阳工程学院 | Hollow rotor cooling structure of ultra-high-speed permanent magnet motor |
| DE102018222625A1 (en) * | 2018-09-18 | 2020-03-19 | Ziehl-Abegg Automotive Gmbh & Co. Kg | Heatsink for an electric motor, electric motor and method for cooling the motor |
| CN109510401A (en) * | 2018-11-02 | 2019-03-22 | 华南理工大学 | Cooling water channel and its manufacturing method, the external rotor electric machine and its cooling system of external rotor electric machine |
| CN109768638B (en) * | 2019-02-28 | 2020-05-08 | 北京理工大学 | Liquid-cooled outer rotor permanent magnet synchronous motor structure for rotorcraft |
| CN113162281B (en) * | 2021-03-02 | 2023-03-10 | 华中科技大学 | External rotor electric machine with cooling structure |
-
2009
- 2009-09-10 CN CN2009103068113A patent/CN101645632B/en not_active Expired - Fee Related
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| CN101645632A (en) | 2010-02-10 |
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