CN2757414Y - Motor stator and rotor double path parallel circulation oil path cooling device - Google Patents
Motor stator and rotor double path parallel circulation oil path cooling device Download PDFInfo
- Publication number
- CN2757414Y CN2757414Y CN 200420086172 CN200420086172U CN2757414Y CN 2757414 Y CN2757414 Y CN 2757414Y CN 200420086172 CN200420086172 CN 200420086172 CN 200420086172 U CN200420086172 U CN 200420086172U CN 2757414 Y CN2757414 Y CN 2757414Y
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- rotor
- oil circuit
- oil path
- stator
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Abstract
The utility model relates to a motor stator and rotor double path parallel circulation oil path cooling device, which can be used for motors with high power density. The utility model has the technical characteristics that a rotor shaft with a spiral cooling oil path is arranged in a stator shell with a double spiral cooling oil path; the rotor shaft and the stator shell are connected by a front end cover and a rear end cover. A rotor oil path inlet on the rotor shaft is connected in parallel with a stator oil path inlet of the stator shell; a rotor oil path outlet on the rotor shaft is connected in parallel with a stator oil path outlet of the stator shell. The utility model has the advantages that the oil path cooling device overcomes the problem that the temperature gradient between a cooling medium and a heat source is large; meanwhile, the oil path cooling device can effectively emit heat to cool. Because the structure quickly emits heat and rapidly cools, the utility model is good for enhancing the power density of motors.
Description
Technical field
The utility model relates to a kind of electric machine rotor two-way circulating oil path cooling device in parallel, can be used for high power density motor.
Background technology: the difficult problem of high power density motor is heating problem and heat dissipation problem, and is especially very serious for the heating of ultra high power density electrical machine.At present, a lot of motors adopt the external stator cooling structure to address this problem.The ABLE series ultra high power density electrical machine that like American AB LE company produces has more than 30 specification, and this serial motors all adopts the external stator water-cooling structure.But this cooling structure can't cool off rotor.
So when rotor is cooled off, motor generally all is to adopt rotor series connection cooling structure, be that coolant flows into from stator, flow out from rotor, the long flow path of this structure coolant, coolant inlet temperature and outlet temperature differ greatly, and cause the temperature gradient between coolant and the thermal source big.
In addition, in above-mentioned two kinds of cooling structures, coolant is selected water mostly for use, and specific heat of water is big, and thermal conductivity is good, and is easy to use, but the easy fouling of water, the water route is easily stopped up, and the gasification back forms air film influences thermal conductivity, can cause after motor leaks that insulating barrier punctures, and reliability is low.
Summary of the invention
The technical problem that solves
For fear of the deficiencies in the prior art part, the utility model provides a kind of rotor two-way oil cooling parallel-connection structure.The temperature gradient that this structure can overcome between coolant and the thermal source is big, more effectively reaches the effect of heat radiation cooling.
Technical scheme
Technical characterictic of the present utility model is: an armature spindle 1 that has spiral cooling oil circuit is placed in the stator case 2 of a band double helix cooling oil circuit, be connected with rear end cap 4 with front end housing 3; Rotor oil circuit import 5 on the armature spindle 1 is connected in parallel with the stator oil circuit import 6 of stator case, and the rotor oil circuit outlet 7 on the armature spindle is connected in parallel with the stator oil circuit outlet 8 of stator case.
The described armature spindle 1 that has spiral cooling oil circuit is to be made of rotor hollow shaft 12 and spiral hollow shaft 9, rotor hollow shaft 12 is hollow-core construction except that the shaft extension place, spiral hollow shaft 9 is penetrated rotor hollow shaft 12, rear end cap 4 is installed in rear end at armature spindle 1, rotor oil circuit import 5 is connected with the hollow of spiral hollow shaft 9, the oil circuit outlet is derived by the helicla flute of spiral hollow shaft 9, and rotor oil circuit outlet 7 is connected on the rear end cap 4.
The stator case 2 of described band double helix cooling oil circuit is: shell body 13 is enclosed within on the inner housing 16 forms hermetically-sealed construction, inner housing is designed to the double-spiral structure with double helix rib 14, and is connected with rear end cap 4; Design has stator oil circuit import 6 and stator oil circuit outlet 8 on the rear end cap 4, is connected with two groups of helicla flutes 15 respectively, and two groups of helicla flutes 15 are at the other end of the inner housing 16 formation circulating oil path that is interconnected.
Beneficial effect
The beneficial effects of the utility model are that the temperature gradient that overcomes between coolant and the thermal source is big, the cooling of can more effectively dispelling the heat simultaneously.Because this structure rapid heat dissipation, cooling are rapidly, help improving the power density of motor.
Description of drawings
Fig. 1: two-way circulating oil path cooling device in parallel schematic diagram
Fig. 2: the armature spindle schematic diagram that has spiral cooling oil circuit
Fig. 3: the stator case schematic diagram of band double helix cooling oil circuit
1. armature spindle 2. stator cases 3. front end housings 4. rear end caps 5. rotor oil circuit imports 6 stator oil circuit imports 7. rotor oil circuits export 8. stator oil circuits and export 15. liang of groups of 9. spiral hollow shafts, 10 fins, 11. sealing rings, 12. rotor hollow shafts, 13. shell bodies, 14. double helix ribs helicla flute, 16. inner housings
Embodiment
Now in conjunction with the accompanying drawings the utility model is further described:
An armature spindle 1 that has spiral cooling oil circuit is placed in the stator case 2 of a band double helix cooling oil circuit, be connected with rear end cap 4 with front end housing 3; Rotor oil circuit import 5 on the armature spindle 1 is connected in parallel with the stator oil circuit import 6 of stator case, and the rotor oil circuit outlet 7 on the armature spindle is connected in parallel with the stator oil circuit outlet 8 of stator case.
The stator case 2 of band double helix cooling oil circuit is: shell body 13 is enclosed within on the inner housing 16 forms hermetically-sealed construction, inner housing is designed to the double-spiral structure with double helix rib 14, and is connected with rear end cap 4; Design has stator oil circuit import 6 and stator oil circuit outlet 8 on the rear end cap 4, is connected with two groups of helicla flutes 15 respectively, and two groups of helicla flutes 15 are at the other end of the inner housing 16 formation circulating oil path that is interconnected.
The surface roughness of the fin 10 on spiral hollow shaft 9 and the inner housing 16 is
The oil circuit outlet that is made of the helicla flute of rotor hollow shaft 12 and spiral hollow shaft 9 is adding sealing ring 11 with the end cap junction, forms movable sealing structure.
Design oil circuit respectively at stator and rotor, during machine operation, the stator and rotor oil circuit cools off stator, rotor respectively simultaneously.Have two cover oil supply systems, a cover is supplied with the cooling of stator oil circuit, and a cover is supplied with the cooling of rotor oil circuit.Thereby have four oil circuits and import and export two of stators, two of rotors.The cascaded structure of comparing, though hydraulic fluid port has more two, parallel-connection structure can reduce the temperature gradient between thermal source and the coolant, reduces the gasification phenomenon of medium, thereby improves cooling effect.
Coolant adopts oil resistant, and the oil resistant of coolant can adopt chilli oil No. ten.High power density motor is adopted and is used water as coolant, and specific heat of water is big, and thermal conductivity is good, good fluidity, easy to use, but the easy fouling of water, perishable housing, stop up the water route easily, thermal conductivity is bad after the aqueous vaporization, can cause after motor leaks that insulating barrier punctures, and can produce incrustation scale after the long-time running in cooling bath, slot cross-section can diminish gradually, poor reliability.The utility model adopts oil to do coolant, and radiating effect is better.Because the particle of oil is big, easily form turbulent flow; Oily after being heated to uniform temperature, good fluidity; Oil does not have corrosivity to each parts of motor, and is non-conductive, type of cooling when can realize stator and rotor.
The utility model adopts the oil cooled mode of following.Follow oil cooling but, relatively simple for structure, cooling effect is also relatively good.Following oil cooling but can be effectively cools off the mid portion of electric machine iron core.In addition because coolant directly contact with heater (mainly being winding), so, follow oil cooling but the coolant of mode can not damage winding insulation, not can so and the life-span of reduction high power density motor.If adopt the oil spout type of cooling, motor is when high-speed cruising, and the mist of oil of oil atomizer spray place, pressure are very big, are damaged to winding conducting wire probably.
Adopt the method for heating cooling.Heated cooling medium, medium mobile better can the higher temperature of faster reduction motor internal, takes away more heat.Heated cooling medium is compared the normal temperature cooling simultaneously, can reduce the gasification phenomenon of coolant.
When machine operation, two cover oil supply systems are given rotor oil circuit fuel feeding simultaneously respectively, and rotor is cooled off.One cover is supplied with the cooling of stator oil circuit, and a cover is supplied with the cooling of rotor oil circuit.Thereby have four oil circuits and import and export two of stators, two of rotors.The cascaded structure of comparing, though hydraulic fluid port has more two, parallel-connection structure can increase the cooling flow, reduces the temperature gradient between thermal source and the coolant, reduces the gasification phenomenon of medium, thereby improves cooling effect.
Claims (7)
1. an electric machine rotor two-way circulating oil path cooling device in parallel is characterized in that: an armature spindle (1) that has spiral cooling oil circuit is placed in the stator case (2) of a band double helix cooling oil circuit, be connected with rear end cap (4) with front end housing (3); Rotor oil circuit import (5) on the armature spindle (1) is connected in parallel with the stator oil circuit import (6) of stator case, and the rotor oil circuit outlet (7) on the armature spindle is connected in parallel with the stator oil circuit outlet (8) of stator case.
2. electric machine rotor two-way according to claim 1 circulating oil path cooling device in parallel, it is characterized in that: the described armature spindle (1) that has spiral cooling oil circuit is to be made of rotor hollow shaft (12) and spiral hollow shaft (9), rotor hollow shaft (12) is hollow-core construction except that the shaft extension place, spiral hollow shaft (9) is penetrated rotor hollow shaft (12), rear end cap (4) is installed in rear end at armature spindle (1), the hollow connection of rotor oil circuit import (5) and spiral hollow shaft (9), the oil circuit outlet is derived by the helicla flute of spiral hollow shaft (9), and rotor oil circuit outlet (7) is connected on the rear end cap (4).
3. electric machine rotor two-way according to claim 1 circulating oil path cooling device in parallel, it is characterized in that: the stator case (2) of described band double helix cooling oil circuit is: shell body (13) is enclosed within inner housing (16) goes up the formation hermetically-sealed construction, inner housing is designed to the double-spiral structure with double helix rib (14), and is connected with rear end cap (4); Rear end cap (4) is gone up design has stator oil circuit import (6) and stator oil circuit to export (8), is connected with two groups of helicla flutes (15) respectively, and two groups of helicla flutes (15) are at the other end of inner housing (16) the formation circulating oil path that is interconnected.
4. electric machine rotor two-way according to claim 2 circulating oil path cooling device in parallel, it is characterized in that: the surface roughness of described spiral hollow shaft (9) is
5. electric machine rotor two-way according to claim 1 circulating oil path cooling structure in parallel, it is characterized in that: armature spindle (1) adopts the high-strength alloy material, can adopt 40CrMnSi.
6. electric machine rotor two-way according to claim 2 circulating oil path cooling device in parallel, it is characterized in that: the oil circuit outlet that is made of the helicla flute of rotor hollow shaft (12) and spiral hollow shaft (9) is adding sealing ring (11) with the end cap junction, forms movable sealing structure.
7. electric machine rotor two-way according to claim 1 circulating oil path cooling device in parallel, it is characterized in that: the oil resistant of coolant can adopt chilli oil No. ten.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420086172 CN2757414Y (en) | 2004-11-12 | 2004-11-12 | Motor stator and rotor double path parallel circulation oil path cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420086172 CN2757414Y (en) | 2004-11-12 | 2004-11-12 | Motor stator and rotor double path parallel circulation oil path cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2757414Y true CN2757414Y (en) | 2006-02-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420086172 Expired - Fee Related CN2757414Y (en) | 2004-11-12 | 2004-11-12 | Motor stator and rotor double path parallel circulation oil path cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2757414Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055281A (en) * | 2009-11-04 | 2011-05-11 | F.波尔希名誉工学博士公司 | Cooling device for an electric machine arrangement |
| CN102810943A (en) * | 2012-07-31 | 2012-12-05 | 联合汽车电子有限公司 | Cooling structure of inner rotor motor |
| CN103296836A (en) * | 2013-06-04 | 2013-09-11 | 北京交通大学 | Circumferential radial multipath oil cooling system for high-speed motor |
| CN104539102A (en) * | 2014-12-16 | 2015-04-22 | 江门市君盛实业有限公司 | Cooling device |
| CN105388017A (en) * | 2015-12-14 | 2016-03-09 | 中国燃气涡轮研究院 | Double-spiral-groove cooler |
| CN106100242A (en) * | 2016-07-31 | 2016-11-09 | 李岳 | The double cool electric machine of stator cooled Tong Bu with rotor |
| CN106849509A (en) * | 2017-04-25 | 2017-06-13 | 沈阳工程学院 | A kind of ultrahigh speed magneto sleeve rotor cooling structure |
| JP2020145782A (en) * | 2019-03-04 | 2020-09-10 | 本田技研工業株式会社 | Rotor and rotary electric machine |
| CN113904492A (en) * | 2021-10-13 | 2022-01-07 | 杭州电子科技大学 | Hollow shaft motor |
| WO2023131831A1 (en) * | 2022-01-06 | 2023-07-13 | Matter Motor Works Private Limited | A parallel cooling system for an electric motor |
-
2004
- 2004-11-12 CN CN 200420086172 patent/CN2757414Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055281B (en) * | 2009-11-04 | 2014-12-24 | F.波尔希名誉工学博士公司 | Cooling device for an electric machine arrangement |
| CN102055281A (en) * | 2009-11-04 | 2011-05-11 | F.波尔希名誉工学博士公司 | Cooling device for an electric machine arrangement |
| CN102810943B (en) * | 2012-07-31 | 2016-04-27 | 联合汽车电子有限公司 | The cooling structure of inner rotor motor |
| CN102810943A (en) * | 2012-07-31 | 2012-12-05 | 联合汽车电子有限公司 | Cooling structure of inner rotor motor |
| CN103296836A (en) * | 2013-06-04 | 2013-09-11 | 北京交通大学 | Circumferential radial multipath oil cooling system for high-speed motor |
| CN103296836B (en) * | 2013-06-04 | 2016-02-17 | 北京交通大学 | The all radial multichannel oil cooling systems of high-speed electric expreess locomotive |
| CN104539102A (en) * | 2014-12-16 | 2015-04-22 | 江门市君盛实业有限公司 | Cooling device |
| CN105388017A (en) * | 2015-12-14 | 2016-03-09 | 中国燃气涡轮研究院 | Double-spiral-groove cooler |
| CN106100242A (en) * | 2016-07-31 | 2016-11-09 | 李岳 | The double cool electric machine of stator cooled Tong Bu with rotor |
| CN106849509A (en) * | 2017-04-25 | 2017-06-13 | 沈阳工程学院 | A kind of ultrahigh speed magneto sleeve rotor cooling structure |
| JP2020145782A (en) * | 2019-03-04 | 2020-09-10 | 本田技研工業株式会社 | Rotor and rotary electric machine |
| US11283316B2 (en) | 2019-03-04 | 2022-03-22 | Honda Motor Co., Ltd. | Rotor and rotating electrical machine |
| CN113904492A (en) * | 2021-10-13 | 2022-01-07 | 杭州电子科技大学 | Hollow shaft motor |
| WO2023131831A1 (en) * | 2022-01-06 | 2023-07-13 | Matter Motor Works Private Limited | A parallel cooling system for an electric motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |