CN105811662A - Closed electrical rotating machine - Google Patents
Closed electrical rotating machine Download PDFInfo
- Publication number
- CN105811662A CN105811662A CN201610035880.5A CN201610035880A CN105811662A CN 105811662 A CN105811662 A CN 105811662A CN 201610035880 A CN201610035880 A CN 201610035880A CN 105811662 A CN105811662 A CN 105811662A
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- CN
- China
- Prior art keywords
- framework
- stator
- rotating motor
- partition member
- axially
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/08—Arrangements for cooling or ventilating by gaseous cooling medium circulating wholly within the machine casing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2209/00—Specific aspects not provided for in the other groups of this subclass relating to systems for cooling or ventilating
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention provides a closed electrical rotating machine which ensures a heat dissipation function without complex processing. The closed electrical rotating machine comprises a rotor with a rotating shaft and a rotor core, a stator with a stator core and a stator coil, a frame, and an external cooling structural body (110). The external cooling structural body (110) comprises a cooling portion cover plate, and a separating component (112). The cooling portion cover plate and the frame are at interval and are oppositely configured, and the cooling portion cover plate covers the cylindrical part of the frame, and forms a closed space (118) with the frame. The separating component (112) is connected between the inner surface of the cooling portion cover plate and the outer surface of the frame, and divides the closed space (118) to form a flowing path of a cooling material. In addition, an injection portion (115) of the external cooling material is formed, and the outlet of the flowing path is provided with a discharge portion (116) which discharges the cooling material to external.
Description
Technical field
The present invention relates to the electric rotating machine of hermetic type.
Background technology
The stator coil of electric rotating machine flows through the electric current corresponding with the output of electric rotating machine.Flow through with electric current, thus copper loss can be produced because of Joule heat.The insulant for preventing short circuit it is provided with between the conductor of stator coil or between the conductor of stator coil and the works such as stator core, support.
For each class of insulation corresponding with temperature conditions, the material of insulant is all different.Having enough insulating effects in order to ensure insulant, the cooling of stator is also comparatively important.
As the technology stator of sealed rotating motor cooled down from outside, it is known to arrange the example (patent documentation 1) in cooling hole in the thickness of slab of framework.It is also known that arrange the technology (patent documentation 2) of the groove passed through for cooling medium at the inner surface of framework.
Prior art literature
Patent documentation
Patent documentation 1: No. 3690920 publications of Japanese Patent No.
Patent documentation 2: Japanese Utility Model registers No. 2513586 publication
Summary of the invention
Invent technical problem to be solved
For arranging the technology in cooling hole on framework and arranging the technology of the groove passed through for cooling medium on framework, it is required for framework is processed, therefore not preferred from economy.Additionally, from the viewpoint guaranteeing enough heat-conducting areas, also can not think and substantially ensure that.
For this, it is an object of the invention to, for sealed rotating motor, it is not necessary to complicated processing ensures that heat sinking function.
Technical teaching for solving the problem was
To achieve these goals, sealed rotating motor involved in the present invention is characterised by, including: rotor, this rotor has rotating shaft and rotor core, and wherein, described rotating shaft axially extends, and described rotor core is arranged at the radial outside of described rotating shaft;Stator, this stator has stator core and stator coil, and wherein, described stator core is arranged at the radial outside of described rotor core and is laminated by iron core steel plate, and described stator coil is laid in the groove being formed at described stator core;Framework, this framework is received described stator and described rotor core and is in a cylindrical shape extension;And external refrigeration structure, this external refrigeration structure is arranged at the radial outside of described framework, and cool down from outside to described framework, described external refrigeration structure includes: cooling end cover plate, this cooling end cover plate and described framework interval also relatively configure, cover the barrel of described framework, and collectively form confined space with described framework;And partition member, this partition member is connected between inner surface and the outer surface of described framework of described cooling end cover plate, to dividing thus forming the stream of coolant in described confined space, described sealed rotating motor is formed with the injection unit from outside coolant, and is formed with, in the outlet of described stream, the discharge portion being discharged to the outside by coolant.
Invention effect
According to the present invention, for sealed rotating motor, it is not necessary to complicated processing ensures that heat sinking function.
Accompanying drawing explanation
Fig. 1 indicates that the front sectional view of the structure of the sealed rotating motor involved by embodiment 1.
Fig. 2 is the side view of the sealed rotating motor involved by embodiment 1.
Fig. 3 is the circumferentially deploying figure of the external refrigeration structure of the sealed rotating motor of embodiment 1.
Fig. 4 is the side view of the sealed rotating motor involved by embodiment 2.
Fig. 5 is the circumferentially deploying figure of the external refrigeration structure of the sealed rotating motor of embodiment 2.
Fig. 6 is the side view of the sealed rotating motor involved by embodiment 3.
Fig. 7 is the circumferentially deploying figure of the external refrigeration structure of the sealed rotating motor of embodiment 3.
Fig. 8 is the side view of the sealed rotating motor involved by embodiment 4.
Fig. 9 is the circumferentially deploying figure of the external refrigeration structure of the sealed rotating motor of embodiment 4.
Detailed description of the invention
Hereinafter, with reference to accompanying drawing, the sealed rotating motor involved by embodiments of the present invention is illustrated.Herein, to the label being mutually identical or similar part mark is common, and repeat specification is omitted.
[embodiment 1]
Fig. 1 indicates that the front sectional view of the structure of the sealed rotating motor involved by embodiment 1.Sealed rotating motor 200 has rotor 10, stator 20, framework 31, bearing 40 and external refrigeration structure 110.
Rotor 10 has the rotating shaft 11 that two ends are rotatively supported and the columnar rotor core 12 of the radial outside being fixed on rotating shaft 11.Stator 20 has stator core 21 and the stator coil 22 of cylindrical shape, the static radial outside being fixed on rotor core 12 of this stator core 21 is also relative with rotor core 12, this stator coil 22 is laid in not shown groove, described groove is formed near the inner surface of stator core 21, parallel to each other and circumferentially spaced compartment of terrain arranges, and axially extends.
Framework 31 is in a cylindrical shape and axially extends, and stator 20 and rotor core 12 are received, and stator 20 carries out static supporting.Bearing 40 is fixedly attached to framework 31, and rotatably countershaft 11 supports.
The radial outside of framework 31 is provided with external refrigeration structure 110.Main Joule heat produced by stator coil 22 can transfer to framework 31 by conduction of heat.The heat of lower portion can transfer to framework 31 by the conduction of heat between framework 31 and cooling gas.Thus, the external refrigeration structure 110 that the heat transferring to framework 31 is installed on framework 31 is removed.
Fig. 2 is the side view of the sealed rotating motor involved by present embodiment.Fig. 3 is the expanded view of the circumference of external refrigeration structure.External refrigeration structure 110 has cooling end cover plate 111, axial dividing plate 112, injection unit 115 and discharge portion 116.
Cooling end cover plate 111 is arranged on the radial outside in the tubular face of framework 31 at spaced intervals, relative with the face with tubular.Cooling end cover plate 111 substantially has the length of framework 31 in the axial direction, is almost laid on whole surrounding in the circumferential.But, terminal board 150 is installed on the outer surface of framework 31, from laying the scope of cooling end cover plate 111 to arranging except the part of terminal board 150.
It is provided with not shown side plate between side and the framework 31 of cooling end cover plate 111.Framework 31, cooling end cover plate 111 and side plate form confined space 118.Side plate is installed on framework 31 by welding etc..
Injection unit 115 and discharge portion 116 are installed to framework 31 by the position between another end of a circumferential end of cooling end cover plate 111 and the circumference of cooling end cover plate 111.It addition, Fig. 2 having illustrated, injection unit 115 and discharge portion 116 are installed on the example on framework 31 top, but it is not limited to this.It can be any part in circumference.
Injection unit 115 is connected with ascending pipe 115b.Injection unit 115 is box-like, is connected with confined space 118 air-tightness by not shown connected entrance.Discharge portion 116 is box-like, is connected with confined space 118 air-tightness by not shown connected entrance.
Therefore, confined space 118 is flowed into from the ascending pipe 115b cooling medium injected via injection unit 115.Also discharge from discharge pipe 116b from confined space 118 via discharge portion 116.
Confined space 118 is substantially a ring-shaped space.Here, although approximately whole surrounding, but being not whole surrounding, do not comprise the circumferential angular regions of the part arranging injection unit 115 and discharge portion 116, this part has dividing plate respectively on the direction vertical with framework 31.If launching in the circumferential, then confined space 118 substantially rectangular shape.It is formed with the connected entrance with injection unit 115 and the connected entrance with discharge portion 116 in the end of circumference.The multiple axially spaced plate 112 as the separator forming coolant stream is utilized to form stream in confined space 118.Multiple axially spaced plates 112 are towards axially arranging at spaced intervals in the circumferential each other.Axially spaced plate 112 adjacent one another are is configured so that flow direction is axially, and alternating inversion.
It addition, the position in injection unit 115 and discharge portion 116 can also be contrary each other, flow direction is contrary with Fig. 3.
The effect of the sealed rotating motor 200 having involved by the present embodiment of above structure is illustrated.In sealed rotating motor 200 running, with Joule heat produced by stator coil 22 for representative in heat produced by the inside of framework 31 by the conduction of heat via the supporting structure thing etc. in framework 31, or by the conduction of heat within framework 31, thus transferring to framework 31.
The heat transferring to framework 31 is transmitted thus transferring to cooling medium by the heat between framework 31 and the cooling medium flowed in confined space 118.Additionally, a part of heat transferring to framework 31 transfers to each the axially spaced plate 112 being fixed on framework 31 by welding etc. by conduction of heat.The heat transferring to axially spaced plate 112 is transmitted thus transferring to cooling medium by the heat of axially spaced plate 112 with the cooling medium of flowing in confined space 118.Thus, as the heat-conducting area being delivered to cooling medium, not only include the surface area of framework 31, also include the surface area in 112 two faces of axially spaced plate that form is different from.It is to say, heat-sinking capability is improved accordingly.
Additionally, due to the flow direction of the cooling medium within confined space 118 is axially, and alternating with each other change in the opposite direction, the cooling gas in the framework 31 of cooled side therefore can be suppressed to produce Temperature Distribution in the axial direction, the homogeneous temperature in framework 31 can be made.
As it has been described above, according to present embodiment, for sealed rotating motor 200, it is not necessary to complicated processing ensures that heat sinking function.
[embodiment 2]
Present embodiment is the deformation of embodiment 1.In present embodiment 2, the partition member being internally formed coolant stream at confined space 118 is different from embodiment 1.Fig. 4 is the side view of the sealed rotating motor involved by embodiment 2, but as shown in Figure 4, the profile of present embodiment 2 is identical with embodiment 1.
Fig. 5 is the circumferentially deploying figure of the external refrigeration structure of the sealed rotating motor of embodiment 2.The structure of the stream of external refrigeration structure 120 is same with embodiment 1, and flow direction is axially and is formed as alternating inversion.Multiple first breviseptum 122 and multiple second breviseptum 123 is comprised as partition member.That is, multiple first breviseptum 122 and multiple second breviseptum 123 are configured to replace each the axially spaced plate 112 in embodiment 1.
Multiple first breviseptums 122 are with long side direction for flow direction, and are configured towards column direction.Additionally, multiple second breviseptums 123 and the first breviseptum 122 alternately configure, and there is inclination relative to column direction.
In there is the sealed rotating motor involved by the present embodiment of above structure, the summation of the surface area on substantially multiple first breviseptum 122 two sides of the surface area on partition member two sides and the surface area on multiple second breviseptum 123 two sides, therefore heat-conducting area is increased.
Additionally, due to the movement disorder in confined space 118, therefore in the various piece of partition member, the flow velocity of cooling medium increases, and Reynolds number increases.The increase of Reynolds number makes pyroconductivity increase.
As it has been described above, heat-conducting area and pyroconductivity increase make cooling capacity increase.
[embodiment 3]
Present embodiment is the deformation of embodiment 1.Fig. 6 is the side view of the sealed rotating motor involved by embodiment 3.In present embodiment 3, the part that cooler cover plate 131 is arranged in whole surrounding except injection unit 115 and discharge portion 116.
Fig. 7 is the circumferentially deploying figure of the external refrigeration structure of the sealed rotating motor of embodiment 3.In present embodiment, as the partition member of external refrigeration structure 130, it is provided with spiral demarcation strip 133.Spiral demarcation strip 133, with axially vertical and circumferentially tilt, is namely spirally installed.In present embodiment, the stream of cooling medium is merely the stream in a direction.That is, flow into the cooling medium of confined space 118 from injection unit 115 circumferentially to advance in confined space 118 when not changing flow direction, and discharge from discharge portion 116.
In present embodiment formed as described above, owing to not having direction to change, expand, reduce on the stream in confined space 118, therefore pressure loss is relatively low, can reduce the power of the blood circulation of cooling medium.
[embodiment 4]
Present embodiment is compared with embodiment 1, and flow direction is also non axial, but square with the axis direction.Additionally, difference also resides in defines confined space 149a and confined space 149b the two confined space.Fig. 8 is the side view of the sealed rotating motor involved by embodiment 4.It is respectively provided with box-like injection unit 145 and discharge portion 146 and injection unit 147 and these two groups of discharge portion 148.Additionally, the pipe arrangement being connected with injection unit 145 and discharge portion 146 and injection unit 147 and discharge portion 148 respectively is also provided with ascending pipe 145b and discharge pipe 146b and ascending pipe 147b and discharge pipe 148b.
Fig. 9 is the circumferentially deploying figure of the external refrigeration structure of the sealed rotating motor of embodiment 4.External refrigeration structure 140 has division dividing plate 142 and circumference dividing plate 143 as the partition member in confined space.
Divide dividing plate 142 to be configured along square with the axis direction, mark off confined space 149a and confined space 149b.It is utilized respectively circumference dividing plate 143 in confined space 149a and in confined space 149b and forms stream.Stream is square with the axis direction, and stream adjacent one another are is stream in opposite direction.
In the present embodiment with said structure, the direction of stream is square with the axis, and direction alternating inversion, thus can make the uniformity of temperature profile in circumference.Additionally, by splitting in the axial direction, uniformity of temperature profile axially can be made.
[other embodiment]
Above, several embodiments of the invention is illustrated, but these embodiments are intended only as example and present, and do not really want invention scope is defined.Such as, for external refrigeration mechanism, it is shown that be fixed in the situation of framework on the position connected with the outer surface of framework by welding etc., but be not limited to this.Such as, external refrigeration mechanism can also be configured to pull down from framework.In addition it is also possible to the feature of each embodiment is combined.
It addition, above-mentioned embodiment can be implemented with other various forms, without departing from, in the scope of the inventive concept, various omission, replacement, change being carried out.
Above-mentioned embodiment and deformation thereof are all contained in the scope of the present invention, inventive concept, and are included in the invention described in present patent application claim and in the scope that is equal to it.
Label declaration
10 rotors
11 rotating shafts
12 rotor cores
20 stators
21 stator cores
22 stator coils
31 frameworks
40 bearings
110 external refrigeration structures
111 cooling end cover plates
112 axially spaced plates (partition member)
115 injection units
115b ascending pipe
116 discharge portions
116b discharge pipe
118 confined spaces
120 external refrigeration structures
122 first breviseptums (partition member)
123 second breviseptums (partition member)
130 external refrigeration structures
131 cooler cover plates
133 spiral demarcation strips (partition member)
140 external refrigeration structures
142 divide dividing plate (partition member)
143 circumferences demarcation strip (partition member)
145 injection units
145b ascending pipe
146 discharge portions
146b discharge pipe
147 injection units
147b ascending pipe
148 discharge portions
148b discharge pipe
149a, 149b confined space
150 terminal boards
200 sealed rotating motors
Claims (5)
1. a sealed rotating motor, it is characterised in that including:
Rotor, this rotor has rotating shaft and rotor core, and wherein, described rotating shaft axially extends, and described rotor core is arranged at the radial outside of described rotating shaft;
Stator, this stator has stator core and stator coil, and wherein, described stator core is arranged at the radial outside of described rotor core and is laminated by iron core steel plate, and described stator coil is laid in the groove being formed at described stator core;
Framework, this framework is received described stator and described rotor core and is in a cylindrical shape extension;And
External refrigeration structure, this external refrigeration structure is arranged at the radial outside of described framework, and cools down from outside to described framework,
Described external refrigeration structure includes:
Cooling end cover plate, this cooling end cover plate and described framework interval also relatively configure, and cover the barrel of described framework, and collectively form confined space with described framework;And
Partition member, this partition member is connected between inner surface and the outer surface of described framework of described cooling end cover plate, to dividing thus forming the stream of coolant in described confined space,
Described sealed rotating motor is formed with the injection unit from outside coolant, and is formed with, in the outlet of described stream, the discharge portion being discharged to the outside by coolant.
2. sealed rotating motor as claimed in claim 1, it is characterised in that
Described partition member includes axially spaced plate, and this axially spaced plate, towards axial and circumferentially separated from each other interval, is configured by this axially spaced plate so that flow direction is axially and alternating inversion.
3. sealed rotating motor as claimed in claim 1, it is characterised in that
Described partition member is towards axially and be circumferentially spaced one from the other interval, towards column direction and in being provided with multiple first breviseptum in column-like manner, so that flow direction is axial and alternating inversion, and, described partition member includes the second breviseptum, this second breviseptum has inclination relative to described column direction
Described first breviseptum is alternately arranged with described second breviseptum.
4. sealed rotating motor as claimed in claim 1, it is characterised in that
Described partition member includes spiral demarcation strip, and this spiral demarcation strip is configured so that helically formula is advanced vertically.
5. sealed rotating motor as claimed in claim 1, it is characterised in that
Described partition member includes:
Dividing dividing plate, described confined space is divided into two regions and configures vertically by this division dividing plate;And
Circumference demarcation strip, this circumference demarcation strip respectively in said two region towards axially and be spaced apart interval in the circumferential, this circumference demarcation strip being configured so that flow direction is axial and alternating inversion,
Described injection unit and described discharge portion are independently formed in each interval.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015009628A JP2016135049A (en) | 2015-01-21 | 2015-01-21 | Hermetically sealed rotary electric machine |
JP2015-009628 | 2015-01-21 |
Publications (1)
Publication Number | Publication Date |
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CN105811662A true CN105811662A (en) | 2016-07-27 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201610035880.5A Pending CN105811662A (en) | 2015-01-21 | 2016-01-20 | Closed electrical rotating machine |
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JP (1) | JP2016135049A (en) |
CN (1) | CN105811662A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109378938A (en) * | 2018-10-26 | 2019-02-22 | 中车株洲电机有限公司 | The water-cooling method and electric machine stand of motor |
CN117254629A (en) * | 2023-11-15 | 2023-12-19 | 广东启新汽车零部件有限公司 | Automobile motor shell |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018182117A1 (en) * | 2017-03-28 | 2018-10-04 | 엘지전자 주식회사 | Motor |
JP6956046B2 (en) * | 2018-06-07 | 2021-10-27 | 東芝三菱電機産業システム株式会社 | How to design the frame structure |
JP6749438B2 (en) * | 2019-02-20 | 2020-09-02 | 三菱電機株式会社 | Rotating electric machine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH08103053A (en) * | 1994-09-30 | 1996-04-16 | Suzuki Motor Corp | Cooler of motor |
CN1615571A (en) * | 2002-09-13 | 2005-05-11 | 爱信艾达株式会社 | Drive device |
JP2007330075A (en) * | 2006-06-09 | 2007-12-20 | Mitsubishi Electric Corp | Liquid-cooled motor and its manufacturing method |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8700801D0 (en) * | 1987-01-14 | 1987-02-18 | Marston Palmer Ltd | Heat exchanger |
JP2006078035A (en) * | 2004-09-08 | 2006-03-23 | Denso Corp | Heat exchange device |
JP2008301646A (en) * | 2007-06-01 | 2008-12-11 | Aichi Electric Co Ltd | Motor cooling apparatus |
JP5594350B2 (en) * | 2012-11-27 | 2014-09-24 | ダイキン工業株式会社 | Electric motor |
-
2015
- 2015-01-21 JP JP2015009628A patent/JP2016135049A/en active Pending
-
2016
- 2016-01-20 CN CN201610035880.5A patent/CN105811662A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08103053A (en) * | 1994-09-30 | 1996-04-16 | Suzuki Motor Corp | Cooler of motor |
CN1615571A (en) * | 2002-09-13 | 2005-05-11 | 爱信艾达株式会社 | Drive device |
JP2007330075A (en) * | 2006-06-09 | 2007-12-20 | Mitsubishi Electric Corp | Liquid-cooled motor and its manufacturing method |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109378938A (en) * | 2018-10-26 | 2019-02-22 | 中车株洲电机有限公司 | The water-cooling method and electric machine stand of motor |
CN117254629A (en) * | 2023-11-15 | 2023-12-19 | 广东启新汽车零部件有限公司 | Automobile motor shell |
CN117254629B (en) * | 2023-11-15 | 2024-02-06 | 广东启新汽车零部件有限公司 | Automobile motor shell |
Also Published As
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JP2016135049A (en) | 2016-07-25 |
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