CN100352135C - Direct cooling permanent magneta A.C. servo electric machine and brushless D.C. electric machine and application in fuel cell - Google Patents
Direct cooling permanent magneta A.C. servo electric machine and brushless D.C. electric machine and application in fuel cell Download PDFInfo
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- CN100352135C CN100352135C CNB200310113754XA CN200310113754A CN100352135C CN 100352135 C CN100352135 C CN 100352135C CN B200310113754X A CNB200310113754X A CN B200310113754XA CN 200310113754 A CN200310113754 A CN 200310113754A CN 100352135 C CN100352135 C CN 100352135C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The present invention relates to a direct cooling permanent magnetic AC serve motor and a brushless DC motor which comprise outer housing, stators and rotors and are mainly characterized in that axial labyrinth passages are arranged in the outer housing, and inlets and exits are respectively arranged at both ends of the passages. Cooling media such as water or air, etc. are injected into the passages. The media alternately flows from one end of the outer housing to the other end to make that the axial temperature of the motor is very even, the effect of efficiently reducing temperature is obtained, then the shape volume of the motor is reduced, and the performance parameter of the motor is enhanced. At the same time, the labyrinth passage structure can also increase the ways through which the media pass and further improves the cooling effect. Manufacture cost is not increased, and the media contact well with the passages, because the manufacture of the labyrinth passage structure is very simple, and pipelines do not need to be increased. The direct cooling permanent magnetic AC serve motor and the brushless DC motor also relate to the application of the permanent magnet AC serve motor and the brushless DC motor in fuel cells.
Description
Technical field
The present invention relates to a kind of water cooling, air cooling or adopt similar medium cooled motor and application thereof, specifically a kind of direct-cooling type permanent magnetic Ac servo motor and brshless DC motor and the application in fuel cell thereof.
Background technology
The cooling effect of motor directly has influence on motor properties, has the motor of good cooling effect, can reduce the overall volume of motor, increases work efficiency, and prolongs motor useful life, and makes motor operate in best operating state.The type of cooling of common motor has in external refrigeration and the machine directly cools off two kinds.So-called external refrigeration mode promptly adopts the blower fan heat radiation, reaches the purpose to the motor cooling.This type of cooling is comparatively simple, but for being in the motor of working under high temperature, high heat, high dust or the similar relative adverse circumstances for a long time, can influence the useful life of motor.In addition, for obtaining result of ventilating heat dissipation preferably, prior art adopts the method that strengthens shell dimension to obtain big relatively draught area more, so not only can directly cause the increase with material and cost, also makes troubles to the user because of the increase of motor size and weight.
Existing direct-cooling type motor, as the disclosed a kind of motor with watter cooling shell of Chinese patent CN2412311Y specification, its shell is a sandwich type structure, is provided with spiral channel in described interlayer, and motor housing is provided with the water-in and water-out mouth of pipe that communicates with described interlayer inner chamber.Feed cooling water in above-mentioned water inlet pipe, cooling water flows in spiral channel, the heat that motor produces is taken away, thereby reached the effect of cooling.The motor housing of said structure can reduce the working temperature of motor effectively, and its advantage is conspicuous.But also there is following shortcoming in it: the first is because the characteristics of spiral channel have determined that its water inlet pipe mouth and effluent pipe mouth are the two ends that are separately positioned on motor, like this, the axial temperature of motor distributes very inhomogeneous, presents an end height, state that the other end is low, can reduce cooling effect.It two is that to process the technology difficulty of spiral channel in the enclosure very big, makes that the cost of manufacture of motor is higher relatively.Simple method is that a spiral helicine metal tube is set in the enclosure, but this also can bring this metal tube and housing contacts bad, the problem that causes radiating effect to descend.
The permanent magnetic Ac servo motor is widely used in the control system with its good speed adjusting performance and accurate localization performance, difference according to type of drive, also can be used as the brshless DC motor operation, perhaps, be applied to numerically controlled lathe motor, disk drive motor etc. usually as the permagnetic synchronous motor operation.And fuel cell is as a kind of novel free of contamination Blast Furnace Top Gas Recovery Turbine Unit (TRT), and its operation principle is that the energy that utilizes hydrogen and hyperbaric oxygen head-on collision back to produce generates electricity, and hyperbaric oxygen wherein is to be obtained by the driven by motor air compressor.Owing to require its energy output to change in many use occasions, that is the flow of air compressor must be pressed system requirements and variation at any time, this motor that just requires to drive air compressor machine also has good servo property, also require motor that higher efficient, smaller volume and lighter weight are arranged simultaneously, have good low cruise performance simultaneously concurrently.Because asynchronous machine has easy starting, advantage such as cheap, thereby traditional air compressor machine is driven by asynchronous machine usually.But on the other hand, the asynchronous machine volume is bigger, and efficient is lower, and the poor-performing of its low cruise can not satisfy its application at fuel cell simultaneously.
Summary of the invention
What the present invention will solve is the problems referred to above that existing direct-cooling type motor exists, and a kind of follow-on direct-cooling type permanent magnetic Ac servo motor is provided, and is intended to adopt simple structure to reach better heat radiating effect, and then reduces small product size, improves operational efficiency.
The present invention also will provide a kind of permanent magnetic Ac servo motor that can further reduce the motor self-heating.
The technical scheme that addresses the above problem employing is: a kind of direct-cooling type permanent magnetic Ac servo motor, comprise shell, stator and rotor, it is characterized in that being provided with in the described shell axial labyrinth passage, the two ends of described passage are respectively arranged with import and outlet, in described shell, be provided with one group of axial dividing plate, described dividing plate and motor reel line parallel, thereby dividing plate is submitted for being provided with the space at shell and is formed labyrinth passage, the dividing plate of labyrinth passage end and the two ends of shell are fixed, and form to cut off.
Direct-cooling type permanent magnetic Ac servo motor of the present invention, owing to be provided with axial labyrinth passage in the shell, in passage, inject coolants such as water or air, described medium is circuitous vertically flowing in this labyrinth passage, the heat that motor produces is taken away, at last, the medium after being heated flows out from outlet.Shell adopts the motor of labyrinth passage structure, because medium alternately flows to the other end from an end of shell, makes that the axial temperature of motor is very even, reaches cool effect effectively, and then can reduce the overall volume of motor, improve the performance parameter of motor.Simultaneously, the approach that the labyrinth passage structure also can increase the medium process further improves cooling effect.Because the labyrinth passage structure fabrication is very simple, need not set up pipeline, thereby can not increase cost of manufacture, and make medium contact well with passage.
When the dividing plate of labyrinth passage was even number, described channel entrance and exit were at the same end of motor; And when the dividing plate of labyrinth passage was odd number, described import and outlet were in the two ends of motor respectively.Described dividing plate can with the motor reel line parallel, also can with motor axis at an angle.Former structure is simple relatively, is convenient to make; But and latter's extending channel total length.
As a further improvement on the present invention, on a side end cap of motor, be provided with the cooling duct at least, can be with the protection bearing because of not overheated and lose oil, thus cause damage of bearings, also take away a part of rotor heat simultaneously.This cooling duct can have the loop of one's own, also can be communicated with the labyrinth passage on the described shell.
As further improving again of invention, between the end of stator coil and inner surface of outer cover, also be provided with the heat conductive insulating layer, the heat that stator coil end is produced can be pulled away rapidly.
Further improve as the present invention, alternately be provided with permanent magnet on the described rotor, described every utmost point permanent magnet is spliced vertically by two or more magnet unit, and leaves the gap between the adjacent unit.Because the existence in gap can weaken the eddy current in the permanent magnet effectively, can further reduce the temperature rise that machine operation produces.
Experiment showed, that under identical power of motor the weight of permanent magnetic Ac servo motor of the present invention when adopting the water-cooled medium is 1/8th to 1/10th of asynchronous machine weight, its cooling effect is very significant.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the expanded view of shell.
Fig. 3 is the structural representation of rotor.
Embodiment
Figure 1 shows that a permanent magnetic Ac servo motor, it is made of shell 3, stator 7, rotor 8, left end cap 2, right end cap 9 and encoder 11, on described stator 7, be embedded with coil, between the inner surface of the end 4 of stator coil and shell 3, also be provided with heat conductive insulating layer 5, this heat conductive insulating layer 5 can adopt existing good heat conductive performance to have the silica flour material of good insulation performance simultaneously again concurrently, and the heat that stator coil end 5 is produced can be pulled away rapidly.On described shell 3, be provided with cooling duct 6, on described left end cap 2, be provided with cooling duct 1, on described right end cap 9, also be provided with cooling duct 10.Above-mentioned cooling duct can independently be provided with, and establishes one's own system, and also can interconnect.For latter's structure, can series operation, also can parallel running.
With reference to Fig. 2,4, in described shell 3, be provided with one group of axial dividing plate, described dividing plate and motor reel line parallel.In the present embodiment, the quantity of described dividing plate is 6, and the left end of its median septum 12-1,12-3,12-5 and shell 3 leaves space 16, the right-hand member of dividing plate 12-2 and dividing plate 12-4 and shell 3 leaves the space, like this, dividing plate alternately is provided with the space on shell 3, forms a mazy passage 6.The dividing plate 15 that is arranged on passage 6 ends is fixed with the two ends of shell 3, forms and cuts off, and is provided with channel entrance 13 in the left side of dividing plate 15, is provided with channel outlet 14 on the right side of dividing plate 15.Because dividing plate quantity is even number, so channel entrance 13 and channel outlet 14 are arranged on the same end of shell.
During use, inject cooling water at channel entrance 13 places, this cooling water advances in labyrinth passage in the effect lower edge of the pressure direction of arrow, and the heat that constantly produces during the leakage of electricity engine operation of area, flows out from channel outlet 14 at last.Its movement locus is shown in Fig. 2 center line.
With 20KW permanent magnetic Ac servo motor is example, adopts the water cooling of light water pressure injection, and the normal temperature of water is 20 ℃, and the water temperature at channel outlet 14 places is about 50 ℃, and the two ends temperature of motor casing 3 is even, can play the good cooling effect.
Figure 3 shows that rotor structure of the present invention, along the circumferential direction alternately be provided with the N utmost point, S utmost point permanent magnet in rotating shaft 19, described every utmost point permanent magnet is spliced vertically by four magnet unit 17, and leaves gap 18 between the adjacent unit.Because the existence in gap 18 can weaken the eddy current in the permanent magnet effectively, can further reduce the temperature rise that motor work produces.
The present invention is not limited to above-mentioned execution mode; no matter be the motor of which kind of type; no matter do any variation on its shape or the structure, no matter also which kind of medium it adopts, every motor in employing labyrinth passage structure on the shell all drops within the protection range of the present invention.
Claims (8)
1, a kind of direct-cooling type permanent magnetic Ac servo motor, comprise shell (3), stator (7) and rotor (8), it is characterized in that being provided with in the described shell (3) axial labyrinth passage (6), the two ends of described passage (6) are respectively arranged with import (13) and outlet (14), in described shell (3), be provided with one group of axial dividing plate, described dividing plate and motor reel line parallel, dividing plate at shell (3) thus on alternately be provided with the space and form labyrinth passage (6), the terminal dividing plate (15) of labyrinth passage (6) is fixed with the two ends of shell (3), forms and cuts off.
2, direct-cooling type permanent magnetic Ac servo motor as claimed in claim 1 is characterized in that also being provided with heat conductive insulating layer (5) between the end of stator coil and inner surface of outer cover.
3, direct-cooling type permanent magnetic Ac servo motor as claimed in claim 1 or 2 is characterized in that a side end cap of motor (2,9) is provided with cooling duct (1,10) at least.
4, direct-cooling type permanent magnetic Ac servo motor as claimed in claim 3 is characterized in that described cooling duct (1,10) has the loop of one's own.
5, direct-cooling type permanent magnetic Ac servo motor as claimed in claim 3 is characterized in that described cooling duct (1,10) is communicated with labyrinth passage (6) on the described shell.
6, direct-cooling type permanent magnetic Ac servo motor as claimed in claim 5 is characterized in that described cooling duct (1,10) connects with the labyrinth passage (6) on the described shell.
7, direct-cooling type permanent magnetic Ac servo motor as claimed in claim 5 is characterized in that described cooling duct (1,10) is in parallel with the labyrinth passage (6) on the described shell.
8, direct-cooling type permanent magnetic Ac servo motor as claimed in claim 1 is characterized in that described epitrochanterian every utmost point permanent magnet is spliced vertically by two or more magnet unit (17), and leaves gap (18) between adjacent unit (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200310113754XA CN100352135C (en) | 2003-11-24 | 2003-11-24 | Direct cooling permanent magneta A.C. servo electric machine and brushless D.C. electric machine and application in fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200310113754XA CN100352135C (en) | 2003-11-24 | 2003-11-24 | Direct cooling permanent magneta A.C. servo electric machine and brushless D.C. electric machine and application in fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1560982A CN1560982A (en) | 2005-01-05 |
| CN100352135C true CN100352135C (en) | 2007-11-28 |
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| CNB200310113754XA Expired - Fee Related CN100352135C (en) | 2003-11-24 | 2003-11-24 | Direct cooling permanent magneta A.C. servo electric machine and brushless D.C. electric machine and application in fuel cell |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7911095B2 (en) | 2006-02-15 | 2011-03-22 | Delta Electronics, Inc. | Servo motor with large rotor inertia |
| US7576465B2 (en) * | 2006-10-26 | 2009-08-18 | Deere & Company | Dual rotor electromagnetic machine |
| CN101951069A (en) * | 2010-09-09 | 2011-01-19 | 上海中科深江电动车辆有限公司 | Cooling water channel structure for motor casing |
| US20140246930A1 (en) * | 2011-11-08 | 2014-09-04 | Tm4 Inc. | Cooling Assembly for Electric Machines |
| FR2987518B1 (en) * | 2012-02-29 | 2014-03-28 | Alstom Transport Sa | CLOSED ELECTRIC MOTOR COMPRISING A THERMAL EXCHANGER. |
| CN103066727B (en) * | 2012-09-06 | 2015-06-03 | 哈尔滨工业大学 | Novel motor cooling and eddy-current confinement structure |
| CN103001385A (en) * | 2012-11-19 | 2013-03-27 | 腾达电动科技镇江有限公司 | Cooling end cover for disc type motor |
| CN103124125A (en) * | 2013-03-22 | 2013-05-29 | 哈尔滨工业大学 | Shafting-free inner rotor permanent magnetic synchronous motor with stator water cooling structure |
| JP6208702B2 (en) * | 2015-03-06 | 2017-10-04 | ファナック株式会社 | Stator including outer cylinder, and motor |
| CN105896805A (en) * | 2016-04-19 | 2016-08-24 | 天津市礴金电机有限公司 | Aerospace water circulation motor |
| CN105958711A (en) * | 2016-06-03 | 2016-09-21 | 曾美枝 | Improved motor with safety and high efficiency |
| CN106787397A (en) * | 2017-03-02 | 2017-05-31 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | Water-cooled machine |
| CN108712019A (en) * | 2018-07-06 | 2018-10-26 | 中国核动力研究设计院 | A kind of shield electric machine and its winding overhang cooling mechanism and heat dissipating method |
| CN109639028A (en) * | 2018-12-26 | 2019-04-16 | 宁国东方碾磨材料股份有限公司 | A kind of new-energy automobile motor housing |
| JP2020129890A (en) * | 2019-02-08 | 2020-08-27 | 株式会社日立インダストリアルプロダクツ | Rotary electric machine and hoist system for elevator |
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| US5183975A (en) * | 1991-05-15 | 1993-02-02 | Siemens Energy & Automation, Inc. | Muffler for a cooling system of an electric motor |
| CN2306344Y (en) * | 1997-01-18 | 1999-02-03 | 吴风耀 | Safety voltage in-water cooled submersible electric pump |
| DE19824202C1 (en) * | 1998-05-29 | 1999-09-30 | Siemens Ag | Liquid-cooled electric internal rotor machine e.g. for traction motor of rail-vehicles |
| CN2370324Y (en) * | 1999-05-06 | 2000-03-22 | 中国核工业总公司七二○厂 | Water cooling hot flow blower |
| CN1398452A (en) * | 2000-12-11 | 2003-02-19 | 三菱重工业株式会社 | Cooling structure of generator |
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2003
- 2003-11-24 CN CNB200310113754XA patent/CN100352135C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5183975A (en) * | 1991-05-15 | 1993-02-02 | Siemens Energy & Automation, Inc. | Muffler for a cooling system of an electric motor |
| CN2306344Y (en) * | 1997-01-18 | 1999-02-03 | 吴风耀 | Safety voltage in-water cooled submersible electric pump |
| DE19824202C1 (en) * | 1998-05-29 | 1999-09-30 | Siemens Ag | Liquid-cooled electric internal rotor machine e.g. for traction motor of rail-vehicles |
| CN2370324Y (en) * | 1999-05-06 | 2000-03-22 | 中国核工业总公司七二○厂 | Water cooling hot flow blower |
| CN1398452A (en) * | 2000-12-11 | 2003-02-19 | 三菱重工业株式会社 | Cooling structure of generator |
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| CN1560982A (en) | 2005-01-05 |
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Owner name: HANGZHOU YINGMAIKE ECLECTRONIC CO., LTD.; APPLICA Free format text: FORMER OWNER: HANGZHOU YINGMAIKE ECLECTRONIC CO., LTD. Effective date: 20070309 |
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Effective date of registration: 20070309 Address after: Ma Cheng Road Hangzhou City, Zhejiang province 310012 No. 36 Applicant after: Hangzhou Yingmaike Eclectronic Co., Ltd. Co-applicant after: Zhejiang University Address before: Ma Cheng Road Hangzhou City, Zhejiang province 310012 No. 36 Applicant before: Hangzhou Yingmaike Eclectronic Co., Ltd. |
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