CN103683663A - Rotary motor - Google Patents
Rotary motor Download PDFInfo
- Publication number
- CN103683663A CN103683663A CN201310379755.2A CN201310379755A CN103683663A CN 103683663 A CN103683663 A CN 103683663A CN 201310379755 A CN201310379755 A CN 201310379755A CN 103683663 A CN103683663 A CN 103683663A
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- Prior art keywords
- air
- stator
- dividing plate
- main part
- rotating shaft
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Abstract
The invention provides a rotary motor capable of cooling stator iron core efficiently. The rotary motor has one-way air flow path through the following method. Air in a body part (41) flowing out of a radial gap (60) from an end part on the left side of a figure 1 of the stator (30) and then flowing towards an end part of the right side of the figure 1 is made to flow into an air channel part (42) through the right side in the body part (41), and then flows into the left side in the body part (41) after being cooled by a heat exchange (43). An air barrier board (8) is arranged in a position adjacent to the left side in the axial center of the rotary shaft (2) in a manner of surrounding the outer periphery of the rotary shaft (2). The air barrier board (8) is provided with a face extending in the radial direction for blocking at least one part of the radial gap (60).
Description
Technical field
The present invention relates to a kind of electric rotating machine being formed with for the system of inner air circulation.
Background technology
Electric rotating machine in the running, can be from being installed on the coil evolution of heat of rotor core, stator core.When being superheated to certain limit when above, insulant that can accelerating coil aging.Consequently, this insulant can damage.In addition, the replacing time shorten of insulant.
Electric rotating machine is in the past provided with air pipe in order to suppress temperature to rise at iron core.The cooling air that utilizes the rotation of fan and produce circulates in air pipe.Fan has the function of rotating together with rotating shaft and the air in stator frame being circulated.
Utilizing cooling air to carry out when cooling stator core, according to the difference at the position of stator core, may make cooling degree different, that is, and non-uniform temperature unshakable in one's determination.
As making the inhomogeneous reduction of temperature unshakable in one's determination, improve the method for cooling effect, as disclosed in patent documentation 1, be known to along rotating shaft wind dividing plate is axially set.
Prior art document
Patent documentation
Patent documentation 1: No. 130753 communiques of Japanese patent laid-open 5 –
But in above-mentioned example, air flows in the mode of the axial central diffluence in the axial two side direction stators from stator core.In the situation that the method is applied to unidirectional ventilated type electric rotating machine, the cold-producing medium (cooling-air) flowing out from heat exchanger outlet passes through in the ventilation road (radial gap) being formed between rotating shaft and rotor, by rotor and the pipeline that is positioned at stator core, iron core is carried out coolingly, finally turn back to heat exchanger entrance.
Pipeline is that in stator core, the empty standard width of a room in an old-style house is formed with a plurality of pipelines every ground each other vertically for the radially mobile stream of cooling-air.The amount of the cooling-air passing through in being formed with vertically each a plurality of pipelines is scarcely the same, so inequality occurs the temperature of stator core vertically.Therefore, adopt above-mentioned example, can not tackle along the situation of the circulation path of a direction circulation.
Summary of the invention
The present invention makes in order to solve the problems of the technologies described above, and its object is to carry out cooling uniformly to stator of unidirectional ventilated type electric rotating machine etc.
For realizing the electric rotating machine of the present invention of above-mentioned purpose, have: rotating shaft, its rotation of axis around regulation, rotor, its formation is configured to from radial outside in the mode of radial gap that keeps regulation circular 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 and can flows into for the air in this main part, and can make inner air flow out in aforementioned body portion, and heat exchanger, it is configured in the portion of above-mentioned air channel, can carry out cooling to the air in aforementioned body portion, this electric rotating machine is formed with the air flow circuit of one-way trip as follows: from the first axial end portion of said stator, flow through the air in the mobile aforementioned body portion of second axial end portion of opposition side of backward above-mentioned the first axial end portion of above-mentioned radial gap, from above-mentioned the second axial end portion side inflow in aforementioned body portion in the portion of above-mentioned air channel, after by above-mentioned cools down, flow into above-mentioned the first axial end portion side in aforementioned body portion, above-mentioned electric rotating machine is characterised in that, there is wind dividing plate, than the axial central authorities of above-mentioned rotating shaft, by the position of above-mentioned the first axial end portion side, in the mode of the periphery around above-mentioned rotating shaft, be fixed with this wind dividing plate, this wind dividing plate is formed with along the face of the Directional Extension vertical with above-mentioned rotating shaft, to block at least a portion of above-mentioned radial gap.
Adopt the present invention, can carry out the stator of unidirectional ventilated type electric rotating machine etc. cooling uniformly.
Accompanying drawing explanation
Fig. 1 is the schematic front view that schematically represents the electric rotating machine of 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 local enlarged front view obtaining after a part for the rotor of Fig. 1 and stator is amplified.
Fig. 4 is the schematic front view that schematically represents the electric rotating machine of the second execution mode of the present invention.
Fig. 5 is the partial side view of wind dividing plate etc. that schematically represents the electric rotating machine of the 3rd execution mode of the present invention.
Fig. 6 schematically represents to compare with the wind dividing plate of Fig. 5, is configured in the partial side view of wind dividing plate etc. in the downstream of the air-flow in radial gap.
(symbol description)
2 rotating shafts
4 fan insides
6 bearings
8 wind dividing plates
10 ribs
11 installation portions
12 supports
13 annulus portions
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 pipelines
35 stator windings
40 frameworks
41 main parts
42 air channel portions
43 heat exchangers
51 first plate groups
52 second plate groups
53 the 3rd plate groups
60 radial gaps
61 stator top streams
62 heat exchanger below streams
63 air channel portion entrance streams
64 heat exchanger upstream side streams
Embodiment
Below, with reference to accompanying drawing, the execution mode of electric rotating machine of the present invention is described.
The first execution mode
Use Fig. 1～Fig. 3 to describe the first execution mode.Fig. 1 is the schematic front view that schematically represents the electric rotating machine of 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 local enlarged front view obtaining after a part for the rotor of Fig. 1 20 and stator 30 is 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 rotating shaft 2 and stator 30 etc. is accommodated.
Rotating shaft 2 is around the cylindrical element of the axis rotation of level, utilizes bearing 6 that this rotating shaft 2 is supported to and can be rotated freely.The fan inside 4 of rotation together with rotating shaft 2 is installed on rotating shaft 2.
With the mode fixed rotor 20 of the radial outside of the annulus 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: a plurality of steel plate groups 25, form these steel plate groups 25 by stacked a plurality of steel plate vertically; A plurality of space bars 26, they are configured in respectively vertically between adjacent steel plate group 25 (Fig. 3).In rotor core 21, be formed with the slit 24 extending vertically.In space bar 26, be formed with the rotor pipeline 22 radially running through.In this example, be arranged with vertically a plurality of space bars 26, be therefore formed with vertically a plurality of rotor pipelines 22.
Steel plate group 32 is members that stacked a plurality of steel plate forms vertically.Space bar 33 is the members that are configured in vertically between steel plate group 32 adjacent one another are.In this space bar 33, be formed with the stream (stator pipeline 34) that can make air radially circulate.Stator winding 35 is wound in the slit (not shown) that is formed at stator core 31.
In air channel portion 42, dispose heat exchanger 43.This heat exchanger 43 has the air in framework 40 is carried out to cooling function, utilizes cooled air to carry out cooling to stator 30 grades.This heat exchanger 43 is configured in for stator 30 grades being carried out to the stream of cooling air.In this example, heat exchanger 43 is configured in the top of stator 30.
Surrounding at this heat exchanger 43 disposes a plurality of plate groups that formed, formed the stream of air by a plurality of plates.
These plate groups have: the first plate group 51, and it separates stator 30 and heat exchanger 43; The second plate group 52, it forms the inlet portion going to air channel portion 42 from main part 41; And the 3rd plate group 53, it is for passing air into heat exchanger 43.
The 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.Below this first plate group 51, be formed with for through the stream of the Air Flow in stator 30 (stator top stream 61), above the first plate group 51, be formed with for through the stream (heat exchanger below stream 62) of Air Flow of heat exchanger 43.
The second plate group 52 is configured between stator 30 and fan inside 4 and forms air channel portion entrance stream 63.The air flowing out from stator top stream 61 flow in this air channel portion entrance stream 63, then through fan inside 4, flows to air channel portion 42.
The 3rd plate group 53 is configured in respectively the top of end of the axial both sides of heat exchanger 43, and the 3rd plate group 53 is the plates that are formed with curved surface.Utilize the 3rd plate group 53 to form the heat exchanger upstream side stream 64 for the Air Flow flowing out from air channel portion entrance stream 63.
This wind dividing plate 8 is arranged on respectively along in the circular gap of circumferentially adjacent support 12, and in this example, 4 wind dividing plates 8 are configured to the periphery (Fig. 2) around rotating shaft 2.In addition, in Fig. 1, omit support 12, the installation portion 11 of diagram for wind dividing plate 8 is fixed.
By forming in the above described manner, each wind dividing plate 8 can be blocked a part for radial gap 60, to wanting, through the air-flow of radial clearance, hinders.
Next, the stream of cooling-air is described.
When powering to electric rotating machine, rotating shaft 2 and rotor 20 rotations, 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.Utilize the rotation of fan inside 4 to make the interior generation air-flow of framework 40.In this example, air flows as shown in a plurality of arrow A in Fig. 1.That is the mode that, fan inside 4 sucks with the air of the radial gap 60 in the left side of the fan inside 4 in Fig. 1 and the air of stator top stream 61 is rotated.
The air being sucked by fan inside 4 is through air channel portion entrance stream 63 and inflow heat exchanger upstream side stream 64.Then, this air is through heat exchanger 43.During through heat exchanger 43, this air is cooled.
Omit detailed diagram, in the internal configurations of heat exchanger 43, have cooling water pipe.This cooling water pipe is configured to and from the outside of air channel portion 42, supplies with cooling water, is carrying out after heat exchange, again flowing to the outside of air channel portion 42.
Utilize the cooled air of heat exchanger 43 to flow in the stream 62 of heat exchanger below, through the axial outside (left side of Fig. 1) of rotor 20 and stator 30 and some flows into radial gap 60.The major part that flow into the air in radial gap 60 is blown on wind dividing plate 8.
A part that is blown into the air on wind dividing plate 8 flows to than the position on wind dividing plate 8 downstreams (right side of Fig. 1), directly through radial gap 60, to fan inside 4, flows.
The other parts that are blown into the air on wind dividing plate 8 are passed rotor pipeline 22 to radial outside, and flow in the stator pipeline 34 of stator core 31.Now, can carry out cooling to being positioned at steel plate group 32 grades on Fig. 1 right side of wind dividing plate 8.To being positioned at the steel plate group 25,32 etc. on Fig. 1 right side of wind dividing plate 8, having carried out cooling air and flowed out to stator top stream 61, then to fan inside 4, flowed.
Suppose in the situation that not there is not wind dividing plate 8, the major part that flow into the air in radial gap 60 can flow to the downstream (right side of Fig. 1) of radial gap 60.Consequently, the air particularly flowing in the rotor pipeline 22 of upstream side and the radially stream of stator pipeline 34 reduces.In this case, rotor 20 and stator 30 are carried out to cooling effect reduction.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 carry out the axial upstream side in stator 30 cooling efficiently.
Known according to above explanation, adopt present embodiment, by improving being difficult for the cooling effect of the stator core 31 of cooling axial upstream side, can to stator core 31 grades, carry out cooling uniformly vertically.
The second execution mode
Use Fig. 4 to describe the second execution mode.Fig. 4 is the schematic front view that schematically represents the electric rotating machine of 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, mark the symbol identical with the first execution mode and the repetitive description thereof will be omitted.
The wind dividing plate 8 of present embodiment than the axial central authorities of rotor 20 by the position of upstream side, be that left side in Fig. 4 disposes a plurality of (being in this example two) vertically.
Thus, can obtain the effect identical with the first execution mode, and compare with the first execution mode, be easy to carry out cooling in interior stator 30 grades to upstream side of radial gap 60.
The 3rd execution mode
Use Fig. 5 and Fig. 6 to describe the 3rd execution mode.Fig. 5 is the partial side view of wind dividing plate 8 grades that schematically represents the electric rotating machine of present embodiment.Fig. 6 schematically represents to compare with the wind dividing plate 8 of Fig. 5, is configured in the partial side view of wind dividing plate 8 grades 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, mark the 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 illustrating in the first embodiment.
The rotor 20 of present embodiment is arranged vertically and is supported with a plurality of supports 12.In this example, wind dividing plate 8 is installed on to all supports 12 of arranging 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, account for radial gap 60 composition of proportions for larger than downstream.Compare with the axial location that wind dividing plate 8 is installed shown in Fig. 6, the axial location that wind dividing plate 8 is installed shown in Fig. 5 is upstream side.
By forming in the above described manner, compare with the first execution mode, can carry out trickle adjustment to flow to the amount of the air in the radially stream of each space bar 33 from radial gap 60, thereby can carry out cooling uniformly to stator 30 grades.
Other execution mode
The explanation of above-mentioned execution mode is for the illustration that 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, carries out various distortion in the technical scope that can record 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 can utilize the external fan rotating under the effect of other power supply to make the air circulation in framework 40.
In addition, in the 3rd execution mode, utilize the outside dimension of wind dividing plate 8 to adjust area, but the present invention is not limited to this.Also can utilize the hole (for example circular, rectangle) of regulation shape to adjust area.
Claims (3)
1. an electric rotating machine, has:
Rotating shaft, its rotation of axis around regulation;
Rotor, its formation is configured to from radial outside in the mode of radial gap that keeps regulation circular around described rotating shaft, and this rotor rotates together with described rotating shaft;
Stator, its from radial outside around described rotor;
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 and can flows into for the air in this main part, and can make inner air flow out in described main part; And
Heat exchanger, it is configured in the portion of described air channel, can carry out the air in described main part cooling,
This electric rotating machine is formed with the air flow circuit of one-way trip as follows: from the first axial end portion of described stator, flow through the air in the described main part that the second axial end portion of the opposition side of backward described the first axial end portion of described radial gap flows, from described the second axial end portion side inflow in described main part in the portion of described air channel, after by described cools down, flow into described the first axial end portion side in described main part
It is characterized in that,
This electric rotating machine has wind dividing plate, compare with the axial central authorities of described rotating shaft, this wind dividing plate is positioned at described the first axial end portion side, in the mode of the periphery around described rotating shaft, fix this wind dividing plate, this wind dividing plate is formed with along the face of the Directional Extension vertical with described rotating shaft, 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 a plurality of described wind dividing plates each other vertically.
3. electric rotating machine as claimed in claim 2, is characterized in that,
The area of described wind dividing plate that is positioned at the downstream of described air flow circuit is configured to less than the area of described wind dividing plate of upstream side that is 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 true CN103683663A (en) | 2014-03-26 |
| CN103683663B CN103683663B (en) | 2016-04-27 |
Family
ID=50320274
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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107710562A (en) * | 2015-06-19 | 2018-02-16 | 东芝三菱电机产业系统株式会社 | Electric rotating machine |
| CN110089012A (en) * | 2016-12-21 | 2019-08-02 | 乌本产权有限公司 | The stator load-bearing part of stator for wind energy plant generator and stator, generator and wind energy plant with the stator load-bearing part |
Families Citing this family (3)
| 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 |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05130753A (en) * | 1991-11-05 | 1993-05-25 | Mitsubishi Electric Corp | Rotor of rotary electric machine |
| 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 (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0480249U (en) * | 1990-11-27 | 1992-07-13 | ||
| 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 |
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2012
- 2012-08-28 JP JP2012187367A patent/JP5918656B2/en active Active
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2013
- 2013-08-27 CN CN201310379755.2A patent/CN103683663B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05130753A (en) * | 1991-11-05 | 1993-05-25 | Mitsubishi Electric Corp | Rotor of rotary electric machine |
| 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107710562A (en) * | 2015-06-19 | 2018-02-16 | 东芝三菱电机产业系统株式会社 | Electric rotating machine |
| US20180175688A1 (en) * | 2015-06-19 | 2018-06-21 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Rotating machine |
| US10516309B2 (en) | 2015-06-19 | 2019-12-24 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Rotating machine |
| CN107710562B (en) * | 2015-06-19 | 2020-06-30 | 东芝三菱电机产业系统株式会社 | Rotating electrical machine |
| CN110089012A (en) * | 2016-12-21 | 2019-08-02 | 乌本产权有限公司 | The stator load-bearing part of stator for wind energy plant generator and stator, generator and wind energy plant with the stator load-bearing part |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5918656B2 (en) | 2016-05-18 |
| CN103683663B (en) | 2016-04-27 |
| JP2014045606A (en) | 2014-03-13 |
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