CN103683663B - Electric rotating machine - Google Patents
Electric rotating machine Download PDFInfo
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- CN103683663B CN103683663B CN201310379755.2A CN201310379755A CN103683663B CN 103683663 B CN103683663 B CN 103683663B CN 201310379755 A CN201310379755 A CN 201310379755A CN 103683663 B CN103683663 B CN 103683663B
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- air
- dividing plate
- main part
- rotating machine
- electric rotating
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Abstract
A kind of electric rotating machine, can cool stator core etc. efficiently.Electric rotating machine is formed with the air flow circuit of one-way trip as follows: make the end on the left of Fig. 1 of stator (30) flow out the air of the main part (41) of the endwall flow on the right side of radial gap (60) backward Fig. 1, flow into from the right side in main part (41) in air channel portion (42), after by heat exchanger (43) cooling, flow into the left side in main part (41).Wind dividing plate (8) is fixed with in the mode of the periphery around rotating shaft (2) in the keep left position of side of the axial central authorities than rotating shaft (2), wind dividing plate (8) is formed with the face radially expanded, to block radial gap (60) at least partially.
Description
Technical field
The present invention relates to a kind of electric rotating machine being formed with the system supplying inner air circulation.
Background technology
Electric rotating machine in the running, can from the coil evolution of heat being installed on rotor core, stator core.When being superheated to more than certain limit, understand the aging of the insulant of accelerating coil.Consequently, this insulant can damage.In addition, the replacing construction of insulant shortens.
Electric rotating machine is in the past provided with air pipe in order to suppress temperature to rise at iron core.Utilize the rotation of fan and the cooling air produced circulates in air pipe.Fan has and rotates together with rotating shaft and make the air in stator frame carry out the function circulated.
When utilizing cooling air to cool stator core, cooling degree may be made different according to the difference at the position of stator core, that is, non-uniform temperature unshakable in one's determination.
Improving the method for cooling effect as making the uneven reduction of temperature unshakable in one's determination, as disclosed in patent documentation 1, being known to arrange wind dividing plate along the axis of rotating shaft.
Prior art document
Patent documentation
Patent documentation 1: Japanese Patent Laid-Open 5 – No. 130753 publications
But in above-mentioned example, air is to flow from the mode of the central diffluence of axis in the axially two side direction stators of stator core.When the method being applied to unidirectional ventilated type electric rotating machine, the cold-producing medium (cooling-air) flowed out from heat exchanger outlet passes through being formed in the ventilation path between rotating shaft and rotor (radial gap), by rotor and the pipeline being positioned at stator core, iron core is cooled, finally turn back to heat exchanger entrance.
Pipeline is the stream radially flowed for cooling-air, and in stator core, the empty standard width of a room in an old-style house is formed with multiple pipeline every ground each other vertically.Scarcely the same in the amount being formed with the cooling-air passed through in multiple each pipelines vertically, there is inequality in the temperature of therefore stator core vertically.Therefore, adopt above-mentioned example, the situation of the circulation path along a direction circulation can not be tackled.
Summary of the invention
The present invention makes to solve the problems of the technologies described above, and its object is to cool uniformly the stator etc. of unidirectional ventilated type electric rotating machine.
Electric rotating machine of the present invention for realizing above-mentioned purpose has: rotating shaft, and its axis around regulation rotates, rotor, its formation is configured to from radial outside circular with what keep the mode of the radial gap specified around above-mentioned rotating shaft, and this rotor rotates together with above-mentioned rotating shaft, stator, its from radial outside around above-mentioned rotor, framework, it comprises main part and air channel portion, and aforementioned body portion is configured to from radial outside around said stator, and above-mentioned air channel portion is configured to flow into for the air in this main part, and inner air can be made to flow out in aforementioned body portion, and heat exchanger, it is configured in the portion of above-mentioned air channel, air in aforementioned body portion can be cooled, this electric rotating machine is formed with the air flow circuit of one-way trip as follows: to the air in the aforementioned body portion of the second axial end portion flowing of the opposition side of above-mentioned first axial end portion after flowing through above-mentioned radial gap from the first axial end portion of said stator, from the above-mentioned second axial end portion side inflow in aforementioned body portion in the portion of above-mentioned air channel, flow into the above-mentioned first axial end portion side in aforementioned body portion after by above-mentioned cools down, the feature of above-mentioned electric rotating machine is, there is wind dividing plate, the position of above-mentioned first axial end portion side is leaned on to be fixed with this wind dividing plate in the mode of the periphery around above-mentioned rotating shaft in the axially central authorities than above-mentioned rotating shaft, this wind dividing plate is formed along the face with the Directional Extension of above-mentioned rotational axis vertical, to block above-mentioned radial gap at least partially.
Adopt the present invention, can cool uniformly the stator etc. of unidirectional ventilated type electric rotating machine.
Accompanying drawing explanation
Fig. 1 is the schematic front view of the electric rotating machine schematically representing the first execution mode of the present invention, represents the first half of this electric rotating machine with cross section.
Fig. 2 is the diagrammatic side view of the II – II direction of arrow of the electric rotating machine of Fig. 1.
Fig. 3 is the partial enlargement front view obtained after a part for the rotor of Fig. 1 and stator being amplified.
Fig. 4 is the schematic front view of the electric rotating machine schematically representing the second execution mode of the present invention.
Fig. 5 is the partial side view of the wind dividing plate of the electric rotating machine schematically representing the 3rd execution mode of the present invention etc.
Fig. 6 schematically represents compared with the wind dividing plate of Fig. 5, is configured in the partial side view of the wind dividing plate in the downstream of the air-flow in radial gap etc.
(symbol description)
2 rotating shafts
4 fan insides
6 bearings
8 wind dividing plates
10 ribs
11 installation portions
12 supports
13 annular portion
20 rotors
21 rotor cores
22 rotor pipelines
23 rotor shaft
24 slits
25 steel plate groups
26 space bars
30 stators
31 stator cores
32 steel plate groups
33 space bars
34 stator tube
35 stator windings
40 frameworks
41 main parts
42 air channels portion
43 heat exchangers
51 first plate groups
52 second plate groups
53 the 3rd plate groups
60 radial gaps
Stream above 61 stators
Stream below 62 heat exchangers
63 air channel portion inlet fluid path
64 heat exchanger upstream-side channel
Embodiment
Below, be described with reference to the execution mode of accompanying drawing to electric rotating machine of the present invention.
First execution mode
Fig. 1 ~ Fig. 3 is used to be described the first execution mode.Fig. 1 is the schematic front view of the electric rotating machine schematically representing present embodiment, represents the first half of this electric rotating machine with cross section.Fig. 2 is the diagrammatic side view of the II – II direction of arrow of the electric rotating machine of Fig. 1.Fig. 3 is the partial enlargement front view obtained after a part for the rotor 20 of Fig. 1 and stator 30 being amplified.
First, the structure of the electric rotating machine of present embodiment is described.
The framework 40 that the electric rotating machine of present embodiment has rotating shaft 2, rib 10, rotor 20, stator 30 and accommodates rotating shaft 2 and stator 30 etc.
Rotating shaft 2 is the cylindrical elements rotated around the axis of level, and utilizing bearing 6 to be supported to by this rotating shaft 2 can be rotatable.Rotating shaft 2 is provided with the fan inside 4 rotated together with rotating shaft 2.
Rib 10 has installation portion 11, support 12 and annular portion 13 (Fig. 2).
Installation portion 11 is the components being installed on rotating shaft 2 in the mode of the outer peripheral face around rotating shaft 2.Support 12 extends to the shaft-like of the inner peripheral surface of annular portion 13 radially from installation portion 11, and support 12 circumferentially with (every 90 degree) formation at equal intervals, is namely formed with 4 places (Fig. 2).Wind dividing plate 8 is configured with between circumferentially adjacent support 12.About wind dividing plate 8, see below.
Annular portion 13 is configured to supported portion 12 and supports, and keeps the radial gap 60 of regulation at the outer peripheral face of rotating shaft 2, and around rotating shaft 2.
With the mode fixed rotor 20 of the radial outside of the annular portion 13 around rib 10, this rotor 20 rotates together with rotating shaft 2.This rotor 20 has the rotor shaft 23 of rotor core 21 and conductor.Rotor core 21 has: multiple steel plate group 25, forms these steel plate groups 25 by stacked multiple steel plate vertically; Multiple space bar 26, they are configured between steel plate group 25 adjacent vertically (Fig. 3) respectively.The slit 24 extended vertically is formed in rotor core 21.The rotor pipeline 22 radially run through is formed in space bar 26.In this example, be arranged with multiple space bar 26 vertically, be therefore formed with multiple rotor pipeline 22 vertically.
Rotor shaft 23 is the components being configured to run through slit 24.
Stator 30 is the circular components from radial outside surrounding rotor 20.This stator 30 is made up of stator core 31 and stator winding 35 etc.Omit detailed diagram to stator core 31, stator core 31 has multiple steel plate group 32 and multiple space bar 33.
Steel plate group 32 is components of stacked multiple steel plate vertically.Space bar 33 is configured in the component between steel plate group 32 adjacent one another are vertically.The stream (stator tube 34) that air can be made radially to circulate is formed in this space bar 33.Stator winding 35 is wound in the slit (not shown) being formed at stator core 31.
Framework 40 has main part 41 and air channel portion 42.Main part 41 is fixed with bearing 6 etc., and main part 41, is accommodated rotor 20 and stator 30 from radial outside around stator 30.
Air channel portion 42 is formed as being interconnected with main part 41, and air channel portion 42 is configured to flow into for the air in main part 41, and the air of the inside in air channel portion 42 can be made to flow out in main part 41.About the stream etc. of air, see below.
Heat exchanger 43 is configured with in air channel portion 42.This heat exchanger 43 has the function cooled the air in framework 40, utilizes cooled air to cool stator 30 etc.This heat exchanger 43 is configured in the stream for the air cooled stator 30 etc.In this example, heat exchanger 43 is configured in the top of stator 30.
The multiple plate groups being formed, formed the stream of air by multiple plate are configured with around this heat exchanger 43.
These plate groups have: the first plate group 51, and stator 30 and heat exchanger 43 are separated by it; Second plate group 52, it forms the inlet portion gone to air channel portion 42 from main part 41; And the 3rd plate group 53, it is for passing air into heat exchanger 43.
First plate group 51 is arranged on the top of stator 30 and is arranged on the below of heat exchanger 43, and the first plate group 51 is configured to stator 30 and heat exchanger 43 to separate.Be formed with the stream (above stator stream 61) for the air flowing that have passed through in stator 30 in the below of this first plate group 51, above the first plate group 51, be formed with the stream (below heat exchanger stream 62) for the air flowing that have passed through heat exchanger 43.
Second plate group 52 is configured between stator 30 and fan inside 4 and forms air channel portion inlet fluid path 63.The air that stream 61 flows out above stator flow in this air channel portion inlet fluid path 63, then flows to air channel portion 42 through fan inside 4.
3rd plate group 53 is configured in the top of the end of the axial both sides of heat exchanger 43 respectively, and the 3rd plate group 53 is the plates being formed with curved surface.The 3rd plate group 53 is utilized to form the heat exchanger upstream-side channel 64 flowed for the air flowed out from air channel portion inlet fluid path 63.
Wind dividing plate 8 is the tabular components in the face be formed along the Directional Extension vertical with rotating shaft 2, and compared with the axial central authorities of rib 10, wind dividing plate 8 configures left side in FIG, and compared with the left end of rotor 20, wind dividing plate 8 is configured in right side.
This wind dividing plate 8 is arranged in the circular gap of circumferentially adjacent support 12 respectively, and in this example, 4 wind dividing plates 8 are configured to the periphery (Fig. 2) around rotating shaft 2.In addition, in FIG, support 12, installation portion 11 that diagram is used for being fixed wind dividing plate 8 is omitted.
By forming in the above described manner, each wind dividing plate 8 can block a part for radial gap 60, hinders the air-flow wanted through radial clearance.
Next, the stream of cooling-air is described.
When powering to electric rotating machine, rotating shaft 2 and rotor 20 rotate, and produce heat from stator winding 35, and this heat is delivered to stator core 31 etc.
Fan inside 4 rotates along with the rotation of rotating shaft 2.The rotation of fan inside 4 is utilized to make to produce air-flow in framework 40.In this example, air flows as shown in the multiple arrow A in Fig. 1.That is, the mode that fan inside 4 sucks with the air of stream 61 above the air of the radial gap 60 in the left side to the fan inside 4 in Fig. 1 and stator rotates.
The air sucked by fan inside 4 is inflow heat exchanger upstream-side channel 64 through air channel portion inlet fluid path 63.Then, this air through heat exchanger 43.During passing heat exchanger 43, this air is cooled.
Omit detailed diagram, have cooling water pipe in the internal configurations of heat exchanger 43.This cooling water pipe is configured to the outside supply cooling water from air channel portion 42, again flows to the outside in air channel portion 42 after having carried out heat exchange.
Utilize the cooled air of heat exchanger 43 to flow into below heat exchanger in stream 62, through the axially outside (left side of Fig. 1) of rotor 20 and stator 30, some flows into radial gap 60.The major part flowing into the air in radial gap 60 is blown on wind dividing plate 8.
The part being blown into the air on wind dividing plate 8 flows to the position than wind dividing plate 8 downstream (right side of Fig. 1), and directly through radial gap 60, internally fan 4 flows.
The other parts being blown into the air on wind dividing plate 8 pass rotor pipeline 22 to radial outside, and flow in the stator tube 34 of stator core 31.Now, can the steel plate group 32 etc. on the right side of the Fig. 1 being positioned at wind dividing plate 8 be cooled.Flow out to stream 61 above stator to the air that the steel plate group 25,32 etc. on the right side of the Fig. 1 being positioned at wind dividing plate 8 cools, then internally fan 4 flows.
Suppose when there is not wind dividing plate 8, the major part flowing into the air in radial gap 60 can flow to the downstream of radial gap 60 (right side of Fig. 1).Consequently, the air particularly flow in the rotor pipeline 22 of upstream side and the radial stream of stator tube 34 reduces.In this case, the effect that rotor 20 and stator 30 cool is reduced.The cooling effectiveness of the stator core 31 of upstream side especially reduces.
In contrast, in the present embodiment, by configuration wind dividing plate 8, can cool efficiently the upstream side of the axis in stator 30.
According to above explanation, adopting present embodiment, by improving the cooling effect to the stator core 31 of the upstream side of the axis not easily cooled, can cool uniformly stator core 31 etc. vertically.
Second execution mode
Fig. 4 is used to be described the second execution mode.Fig. 4 is the schematic front view of the electric rotating machine schematically representing present embodiment.Present embodiment is the variation of the first execution mode (Fig. 1 ~ Fig. 3), for the same or similar part of the first execution mode, the mark symbol identical with the first execution mode and the repetitive description thereof will be omitted.
The wind dividing plate 8 of present embodiment is configured with multiple (being two in this example) by the left side in position, i.e. Fig. 4 of upstream side vertically in the axially central authorities than rotor 20.
Thereby, it is possible to obtain the effect identical with the first execution mode, and compared with the first execution mode, be easy to cool the stator 30 etc. of upstream side in radial gap 60.
3rd execution mode
Fig. 5 and Fig. 6 is used to be described the 3rd execution mode.Fig. 5 is the partial side view of wind dividing plate 8 grade of the electric rotating machine schematically representing present embodiment.Fig. 6 schematically represents compared with the wind dividing plate 8 of Fig. 5, is configured in the partial side view of wind dividing plate 8 grade in the downstream of the air-flow in radial gap 60.
In addition, present embodiment is the variation of the first execution mode (Fig. 1 ~ Fig. 3), for the same or similar part of the first execution mode, the mark symbol identical with the first execution mode and the repetitive description thereof will be omitted.In addition, the overall structure of the electric rotating machine of present embodiment is identical with the electric rotating machine shown in the Fig. 1 illustrated in the first embodiment.
The rotor 20 of present embodiment arranges vertically and is supported with multiple support 12.In this example, wind dividing plate 8 is installed on all supports 12 arranged vertically.Now, the area of wind dividing plate 8 is configured at upstream side different with downstream.
In this example, by the area of the upstream side of wind dividing plate 8, namely account for radial gap 60 composition of proportions for larger than downstream.Compared with the axial location being provided with wind dividing plate 8 shown in Fig. 6, the axial location being provided with wind dividing plate 8 shown in Fig. 5 is upstream side.
By forming in the above described manner, compared with the first execution mode, trickle adjustment can be carried out to the amount of the air flow in the radial stream of each space bar 33 from radial gap 60, thus can cool uniformly stator 30 etc.
Other execution mode
The explanation of above-mentioned execution mode is the illustration for the present invention will be described, does not limit the invention described in claim.In addition, the structure of each several part of the present invention is not limited to above-mentioned execution mode, can carry out various distortion in the technical scope described in claim.
In the above-described embodiment, utilize fan inside 4 that the air in framework 40 is circulated, but the present invention is not limited to this.Also the air circulation that the external fan rotated under the effect of other power supply makes in framework 40 can be utilized.
In addition, in the third embodiment, utilize the outside dimension of wind dividing plate 8 to adjust area, but the present invention is not limited to this.Also the hole of regulation shape (such as circular, rectangle) can be utilized to adjust area.
Claims (3)
1. an electric rotating machine, has:
Rotating shaft, its axis around regulation rotates;
Rotor, its formation is configured to from radial outside circular with what keep the mode of the radial gap specified around described rotating shaft, and this rotor rotates together with described rotating shaft;
Stator, its from radial outside around described rotor; And
Framework, it comprises main part and air channel portion, and described main part is configured to from radial outside around described stator, and described air channel portion is configured to flow into for the air in this main part, and inner air can be made to flow out in described main part,
It is characterized in that,
Described electric rotating machine also has heat exchanger, and this heat exchanger arrangement in the portion of described air channel, and can cool the air in described main part,
Described electric rotating machine is formed with the air flow circuit of one-way trip as follows: flow through the air in the described main part of the second axial end portion flowing of the opposition side of backward described first axial end portion of described radial gap from the first axial end portion of described stator, from the described second axial end portion side inflow in described main part in the portion of described air channel, after by described cools down, flow into the described first axial end portion side in described main part
This electric rotating machine has wind dividing plate, compared with the axial central authorities of described rotating shaft, this wind dividing plate is positioned at described first axial end portion side, this wind dividing plate is fixed in the mode of the periphery around described rotating shaft, this wind dividing plate is formed along the face with the Directional Extension of described rotational axis vertical, to block a part for described radial gap.
2. electric rotating machine as claimed in claim 1, is characterized in that,
Sky is opened compartment of terrain and is arranged with multiple described wind dividing plate each other vertically.
3. electric rotating machine as claimed in claim 2, is characterized in that,
The area of the described wind dividing plate being positioned at the downstream of described air flow circuit is configured to less than the area of the described wind dividing plate of the upstream side being positioned at described air flow circuit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-187367 | 2012-08-28 | ||
| JP2012187367A JP5918656B2 (en) | 2012-08-28 | 2012-08-28 | Rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103683663A CN103683663A (en) | 2014-03-26 |
| CN103683663B true CN103683663B (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310379755.2A Active CN103683663B (en) | 2012-08-28 | 2013-08-27 | Electric rotating machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5918656B2 (en) |
| CN (1) | CN103683663B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6054323B2 (en) * | 2014-03-05 | 2016-12-27 | 東芝三菱電機産業システム株式会社 | Fully closed rotating electrical machine |
| JP6637683B2 (en) * | 2015-06-19 | 2020-01-29 | 東芝三菱電機産業システム株式会社 | Rotating electric machine |
| WO2017070760A1 (en) * | 2015-10-28 | 2017-05-04 | Weg Equipamentos Elétricos S.a. | Electrical machine |
| JP6515074B2 (en) * | 2016-09-13 | 2019-05-15 | 東芝三菱電機産業システム株式会社 | Fully enclosed outer fan type rotating electric machine |
| DE102016125218A1 (en) * | 2016-12-21 | 2018-06-21 | Wobben Properties Gmbh | Stator support for a stator of a wind turbine generator, as well as stator, generator and wind turbine with selbigem |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4180974B2 (en) * | 2003-06-02 | 2008-11-12 | 株式会社東芝 | Fully-closed self-cooling motor for driving a vehicle and method for manufacturing a cooler provided in the motor |
| CN201576990U (en) * | 2009-12-10 | 2010-09-08 | 广东省东莞电机有限公司 | Axial-radial hybrid ventilation high-voltage motor |
| CN201601574U (en) * | 2009-12-10 | 2010-10-06 | 广东省东莞电机有限公司 | Pure axial ventilation high-voltage motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0480249U (en) * | 1990-11-27 | 1992-07-13 | ||
| JPH05130753A (en) * | 1991-11-05 | 1993-05-25 | Mitsubishi Electric Corp | Rotor of rotary electric machine |
| GB2289992B (en) * | 1994-05-24 | 1998-05-20 | Gec Alsthom Ltd | Improvements in or relating to cooling arrangements in rotating electrical machines |
| JP2001178050A (en) * | 1999-12-14 | 2001-06-29 | Meidensha Corp | Rotor of dynamo-electric machine |
| US6680549B2 (en) * | 2001-11-01 | 2004-01-20 | General Electric Company | Tapered rotor-stator air gap for superconducting synchronous machine |
-
2012
- 2012-08-28 JP JP2012187367A patent/JP5918656B2/en active Active
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- 2013-08-27 CN CN201310379755.2A patent/CN103683663B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4180974B2 (en) * | 2003-06-02 | 2008-11-12 | 株式会社東芝 | Fully-closed self-cooling motor for driving a vehicle and method for manufacturing a cooler provided in the motor |
| CN201576990U (en) * | 2009-12-10 | 2010-09-08 | 广东省东莞电机有限公司 | Axial-radial hybrid ventilation high-voltage motor |
| CN201601574U (en) * | 2009-12-10 | 2010-10-06 | 广东省东莞电机有限公司 | Pure axial ventilation high-voltage motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103683663A (en) | 2014-03-26 |
| JP5918656B2 (en) | 2016-05-18 |
| JP2014045606A (en) | 2014-03-13 |
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