CN103620919A - Rotor armature for an electric motor - Google Patents
Rotor armature for an electric motor Download PDFInfo
- Publication number
- CN103620919A CN103620919A CN201280031959.0A CN201280031959A CN103620919A CN 103620919 A CN103620919 A CN 103620919A CN 201280031959 A CN201280031959 A CN 201280031959A CN 103620919 A CN103620919 A CN 103620919A
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- China
- Prior art keywords
- armature
- feed path
- radially
- coolant
- connecting portion
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- 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.)
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention relates to a rotor armature for an electric motor (2), comprising: an axially arranged feed channel (5) for feeding a coolant; at least one cooling channel (27) which is radially spaced from a rotational axis of the armature (1) and which is connected to the feed channel (5) via a radial connection (23); and a coolant outlet (31) in order to discharge the fed coolant, said coolant outlet (31) being radially spaced from the feed channel (5).
Description
Technical field
The present invention relates to a kind of armature rotor for motor (Rotorl ufer), especially with the armature rotor of cooling duct.In addition, the invention still further relates to a kind of motor, wherein with cooling agent, to armature rotor, carry out cooling.
Background technology
In being designed for high-revolving electric driver, the eddy current loss and the magnetic hysteresis loss that depend on frequency occupy significant share in the total losses of motor.Remagnetization in the armature rotor forming due to the sheet plate by layering, the polar inductive replacing by external field causes eddy current.The eddy current that depends on revolution causes loss in armature rotor, and described loss produces heat.
If the material remagnetization of conduction, produces magnetic hysteresis loss, wherein in order to change, aim at the necessary consumes energy of inner basic structure.Due to consequent remagnetization, meeting release heat in electric conducting material, described heat represents as magnetic hysteresis loss.In high-speed motor, the eddy current loss of armature plate inside and magnetic hysteresis loss cause total electromagnetic consumable.Electromagnetic consumable can cause in the inside of motor demagnetization with good conditionsi aspect the raising of operating temperature and calorifics.Therefore in this motor, need armature to carry out cooling.
JP 9046973 A disclose a kind of device for cool motors, and wherein armature shaft is configured to hollow shaft.In the inside of described hollow shaft, be provided with axially extended feed path, described feed path provides cooling agent to overflow ducts, described overflow ducts by coolant feed in the hollow shaft surrounding.The flow direction of cooling agent in hollow shaft and the flow direction in feed path move towards on the contrary.By coolant feed in the region in feed path, cooling agent is guided to reservoir vessel.
In addition, in US 2008/0231126 A1, air has been shown through overcooled motor, wherein each ventilation blower with one inner cooling recirculation system outside with is connected.Inner cooling recirculation system extends in the inside of motor shell and comprises cooling duct, and described cooling duct is through the armature of motor.The external refrigeration circulatory system makes the outside of motor shell ventilate.
By US 5,424,593 known a kind of devices, it is for the rectifier armature of cool motors.Coolant line be passed in armature end enclosure interior armature armature winding and with respect to armature, as heat exchanger, work.
JP 2,008 219 960A disclose a kind of motor, and wherein armature plate is arranged on armature shaft.Armature shaft is configured to hollow shaft partly.In the region of supplying with at cooling agent, coolant channel is branched off into the coolant channel radially extending with respect to armature shaft vertically in the inner extension of armature shaft and the region at armature plate.Coolant channel is radially passed in the interface channel being radially spaced with armature shaft in the outer peripheral areas of sheet group.In the region of coolant outlet, second joint area that is configured to partly hollow shaft of the coolant channel that interface channel radially extends with respect to armature shaft by other in downstream and armature shaft, by described interface channel by cooling agent from the internal feed of armature to receiving vessel.
Summary of the invention
Therefore, task of the present invention is, a kind of cooling device of the effective and leakproof seal for motor is provided, with regard to described motor, especially in high-revolving situation, can reduce the heat load of armature rotor and therefore guaranteed to follow member temperature limit, as the demagnetization temperature of for example rotor winding or life-span temperature.
This task solves by armature rotor according to claim 1 and according to the motor described in claim arranged side by side.
Other favourable designs provide in the dependent claims.
According to first aspect, stipulated the armature rotor for motor.Described armature rotor comprises:
-axial arranged, for supplying with the feed path of cooling agent;
The cooling duct that the rotation of-at least one and described armature is radially spaced, described cooling duct is connected with described feed path by connecting portion radially;
The outlet of-cooling duct, for discharging supplied with cooling agent,
The outlet of wherein said cooling duct has radial spacing with described feed path.
The design of the above-mentioned armature rotor for motor is, supplies with cooling agent, and radially with the isolated position of feed path from armature rotor, discharging described cooling agent by axial arranged feed path.Described armature rotor has armature shaft, and described armature shaft can be configured to feed path at least in part.Described feed path can be configured to hollow shaft and partly for supply with cooling agent to armature rotor.The imaginary rotation of armature extends armature shaft is inner vertically, around related its armature plate rotation when the operating motor of armature shaft described in described rotation.Described feed path is connected with at least one cooling duct by radially extending to the interface channel (radially connecting portion) of feed path.Described cooling duct is radially spaced at this and feed path.
Feed path guaranteed the maximum heating position of cooling fluid from coolant entrance to motor, as the transmission of the armature plate of for example armature rotor or bearing.Described cooling agent helps avoid calorifics aspect overheated of the armature rotor of motor, thereby extends the life-span of the motor of High Rotation Speed.Described cooling agent flows out from the coolant entrance of the upstream region of stator structure by the coolant entrance of the feed path of armature rotor.
Along with cooling agent in the motor that is rotated in running of armature shaft is because centrifugal force arrives at through connecting portion radially and continues to be supplied to the cooling duct that at least one and armature shaft be radially spaced from the stream that collects of cooling agent next therefrom.Because cooling agent depends on centrifugal force, flow into radially in connecting portion and upstream in feed path, form suction effect, described suction effect has realized, in the motor of running, when feed path rotates continuously around the rotation of armature shaft, cooling agent continuously flows in feed path.The cooling agent again flowing into depends on centrifugal force and flow at least one cooling duct by connecting portion radially.End in the downstream of cooling duct, cooling agent by coolant outlet from cooling duct is for example discharged to the gap between armature rotor and the downstream area of stator structure.
Described at least one cooling duct and feed path with radial spacing in the outer peripheral areas of the armature plate of armature rotor with the rotation axially parallel of armature extend and be connected to the radially junction of connecting portion from it and extend to the coolant outlet of attaching troops to a unit.Described armature plate is surrounded by armature shaft about the rotation radially inner side of armature and radial outside is surrounded by least one cooling duct.In upstream, armature rotor is contiguous to radially on connecting portion vertically.In downstream, armature rotor is contiguous in labyrinth packing portion vertically, and described labyrinth packing portion is towards the downstream area of stator structure.Alternatively, described radially connecting portion also can extend in the fringe region of the upstream of armature rotor.The use of above-mentioned armature rotor has realized armature plate quite effectively cooling of motor.The structure that the moulding of armature plate is independent of connecting portion radially at this is the structure of coolant channel in other words.
Can stipulate in another embodiment, feed path is radially sealing after connecting portion vertically downstream.So the stream integral body of collecting of cooling agent flow into radially in connecting portion and flows to therefrom at least one cooling duct.In armature plate periphery, the flow of the raising of cooling agent has been realized, and improves targetedly the heat radiation in armature rotor.If also percolation feed path in whole length of cooling agent, feed path can be configured to hollow shaft in gamut.
Described radially connecting portion can be arranged on plate-like, be bearing in the coolant distributor on feed path.Described coolant distributor is configured to turning part dimerous or milling part at this.Described coolant distributor can be also cast member, and at least one cooling duct with the coolant outlet of attaching troops to a unit is incorporated in described cast member.
The above-mentioned armature rotor for motor has been realized, and improves the power of motor, and does not rely on extra for changing the transmission device of motor rotary speed.In the high-revolving running status of motor without separate for affecting the regulon of electromagnetic field control.Can reduce the manufacturing cost of motor in this way.Coolant distributor is applicable to armature rotor and can be incorporated in armature rotor in shape and size.Also can consider, armature rotor abuts on coolant distributor by the end face of its upstream.The end face of cooled rotor armature targetedly by this way.
In addition, another kind of execution mode regulation, coolant distributor is comprised of two pans (Scheibe), between described two pans, is furnished with radially connecting portion.
In another embodiment, described radially connecting portion can be comprised of the interface channel of a plurality of stars, and described interface channel is passed in cooling duct respectively.Described interface channel and described cooling duct can have respectively different diameter mutually.Can imagine equally, the cooling duct in other words diameter of interface channel changes in the length of interface channel in other words in cooling duct.
Another kind of execution mode regulation, described radially connecting portion seals and closes and for holding cooling fluid at armature outer.Described radially connecting portion holds the cooling fluid that out will flow into from feed path and described cooling fluid is directed to at least one cooling duct.Described radially connecting portion is positioned to armature rotor region inner or that locate in its periphery to have realized by the inner raising heating of armature rotor to dispel the heat targetedly.
Alternatively can also imagine, by bearing that radially connecting portion is supplied with cooling agent armature rotor for continuing the king-sized motor of cooling power.On armature shaft, at least another other radially connecting portion can be arranged on first radially after connecting portion vertically.Radially connecting portion can for example meet at right angles or arrange angularly with respect to armature shaft at this.In this way, cooling agent can be fed into the region of especially bearing high heating of armature rotor.
In addition can stipulate, motor comprises above-mentioned armature rotor and stator structure.The coolant outlet of the feed path of armature and the stator structure of upstream together with.Between the stator structure of ， upstream, downstream and feed path and at feed path, between the coolant outlet of cooling duct and the stator structure in downstream, labyrinth packing portion is preferably being set in other words.Described labyrinth packing portion radially seals and stops cooling agent to overflow from gap in the gap between cooling duct being in other words arranged in respective regions and the feed path of stator structure with respect to armature shaft.
Described labyrinth packing portion can non-rotatably extend radially outwardly with respect to armature shaft on armature shaft and with seal.On the seal of labyrinth packing portion, be formed with sealed tongue, described sealed tongue is embedded into accordingly, is configured in the groove in stator structure.Described labyrinth packing portion for example, for example, seals the member (armature shaft) rotating with respect to fixing member (stator structure) to reliable leakproof in the situation that of high rotating speed and pressure.Described labyrinth packing portion can be configured to contactless shaft sealing, and its sealing effectiveness improves by extending sealed pathway with respect to potted component traditional in prior art.
According to another preferred embodiment regulation, between armature rotor and stator structure, arrange the labyrinth packing portion of at least one axial action.Can imagine in addition, two labyrinth packing portions are installed downstream on armature shaft.Described two labyrinth packing portions radially and mutually radially arrange about armature shaft respectively.The labyrinth packing portion of radially outer has and expresses channel, described in express channel and be communicated with in Shang Yu cooling duct, the side of armature rotor.Describedly express channel consistently with the coolant entrance of stator structure in downstream, described coolant entrance guides to cooling agent tank by cooling agent.
Another kind of execution mode regulation is furnished with radial axle sealing between labyrinth packing portion and stator structure.Described radial axle sealing about armature shaft radially in the seal external stability of labyrinth packing portion at stator structure place.Described radial axle sealing seals the outside end of the radial finger of seal with respect to stator structure.The structure of radial axle sealing has realized, and when motor is static, prevents that the cooling agent between labyrinth packing portion and stator structure from overflowing.Described radial axle sealing is used in labyrinth packing portion with respect in the high situation of the coolant pressure of the dynamic and static sealing of stator structure.Radial axle sealing can be annular shaft sealing.
Can stipulate in addition, cooling duct outlet radially inwardly seals and radially outward by the 3rd labyrinth packing portion, seals with Leakage prevention by the second seal, especially the second labyrinth packing portion.
Armature in other words mover (L ufer) can be in the situation that realize the feature of the one or more execution modes in the execution mode mention and be used in motor.
Described execution mode has mainly improved from armature plate and/or from the heat radiation of armature bearing and/or proposed a kind of measure of effectively avoiding cooling agent to overflow.
Accompanying drawing explanation
Below by accompanying drawing to being preferred embodiment described in detail.Wherein:
Fig. 1 illustrates the armature rotor for the motor with connecting portion radially and the stator structure of attaching troops to a unit;
Fig. 2 illustrates in Fig. 1 the intercepting part with radial axle sealing; And
Fig. 3 illustrates through according to the cross section A-A of the radially connecting portion of Fig. 1.
Embodiment
As Fig. 1 learns, the armature 1(rotor of motor 2) comprise that described armature plate is arranged on armature shaft 4 with the armature rotor 13 of the armature plate 3 of attaching troops to a unit.In its whole length, feed path 5 is configured to hollow shaft.Described hollow shaft is rotatably mounted by bearing 15.
The coolant entrance 22 of feed path 5 is communicated with the coolant entrance 6 in the entrance side region 7 of stator structure.The entrance side region 7 of described stator structure can be used in and holds transmission device (not shown) at this.
In the situation that feed path 5 connects, the coolant outlet 8 of feed path 5 is communicated with the downstream area 9 of stator structure.Therefore, feed path 5 couples together the coolant entrance in the entrance side region 7 of stator structure 6 and the coolant outlet 10 of the downstream area 9 of stator structure.
In the end of the coolant entrance 6 towards stator structure 7 of the upstream of feed path 5, the gap 12 between the first 11 pairs, labyrinth packing portion stator structure 7 and armature rotor 13 seals.
The coolant outlet 10 of the downstream area 9 of the coolant outlet 8 relative stator structures of the second and the 3rd 14,28 pairs of feed paths 5 of labyrinth packing portion seals.First, second, and third labyrinth packing portion 11,14,18 shown in Fig. 1 is configured to ring-type and is couple on armature securely.Described labyrinth packing portion comprises respectively a central opening, and feed path 5 is through described opening. Labyrinth packing portion 11,14,28 peripheries from feed path 5 extend radially outwardly and are chimeric with one or more sealed tongues 18, extend in the groove 19 in stator structure region 7,9 described sealed tongue and feed path 5 axially parallels.
In Fig. 1, be provided with coolant shell 20, described coolant shell is surrounded armature 1 by housing wall 20.The housing wall of coolant shell 20 is connected with stator structure 7,9 leakproof seal ground.In order to change cooling agent, coolant shell 20 has the coolant outlet 21 that can seal.In coolant shell 20 inside, downstream part between the coolant entrance 22 of feed path 5 and the coolant outlet 8 of feed path 5, armature plate 3 is positioned at the outer of armature shaft 4 and places.
In the end of the coolant entrance 22 towards feed path 5 of armature plate 3, the form of being provided with is the radially connecting portion 23 of coolant distributor 23.Coolant distributor 23 has interface channel 24 radially, described interface channel with the breach 25 of feed path 5 in being connected.The cooling agent of swimming over to coolant outlet 8 percolation feed paths 5 downwards from coolant entrance 22 is because the centrifugal force the feed path 5 of gravity and rotation is extruded to radially in connecting portion 23 through breach 25.
With armature shaft 4 at a distance of spacing 26, radially connecting portion 23 be transferred to respect to armature shaft 4 axially parallels extend and the cooling duct 27 that is radially spaced with armature shaft 4 in other words with described cooling duct in being connected.Cooling duct 27 is extended and in the whole length of armature plate 3, is extended to its cooling duct outlet 31 vertically from connecting portion 23 radially in the outer peripheral areas of armature plate 3.
As seen from Figure 1, after armature plate 3, be also provided with the 3rd extra labyrinth packing portion 28 in the region of the coolant outlet 8 of feed path 5, the second labyrinth packing portion 14 is other, described the 3rd labyrinth packing portion seals outlet 31 other regions 9 with respect to stator structure, cooling duct downstream.Described the 3rd extra labyrinth packing portion 28 streamwises are looked between armature plate 3 and other labyrinth packing portions 14, and feed path 5 is sealed with respect to the described region 9 of stator structure in described other labyrinth packing portions and its sealed tongue 18 is embedded in the groove 19 of stator structure 9.In described extra labyrinth packing portion 28, be provided with and express channel 29, described in express channel consistent with cooling duct 27 vertically.Described extra labyrinth packing portion 28 is being connected of the reliable leakproof on hollow shaft and between the cooling duct outlet 31 that has realized stator structure region 9 and at least one other coolant outlet 38 non-rotatably.
The sealed tongue 18 in the described region 9 towards stator structure of the second labyrinth packing portion 14 and the sealed tongue 18 of the 3rd labyrinth packing portion 28 have surrounded cooling duct outlet 31 and have prevented that cooling agent from radially spilling into feed path 5 from the gap 30 between extra labyrinth packing portion 28 and the region 9 of stator structure.
In a kind of alternative execution mode, feed path 5 can be configured in armature shaft 4 until the hole of the breach 25 of the cooling duct 27 in armature rotor.There is not in this case coolant outlet 10.So realized cooling agent discharge by the hole in labyrinth packing portion 28 and coolant outlet 38 completely.
Spacing 33 between the rotation 32 of armature shaft 4 and the inwall of feed path 5 is less than the spacing 34 between described rotation 32 and the inwall that deviates from armature plate 3 of cooling duct 27.
With Fig. 2, by the end of the radial outside of the first labyrinth packing portion 11, with respect to the sealing in stator structure region 7,9, encapsulation scheme is described below.In stator structure region, place, the side of 7,9 the inner side towards coolant shell 20, is arranged on support 35 position being radially outward connected in the first labyrinth packing portion 11, and described support holds radial axle sealing 36.Radial axle sealing 36 seals for the end that is positioned at radial outside about armature shaft 4 with respect to 7,9 pairs of the first labyrinth packing portions 11 of stator structure extraly, thereby makes the leakage of sealing especially in slow-revving situation, can be reduced in other words and be avoided.
For better understanding, Fig. 3 has illustrated the radial section through the coolant distributor 23 in Fig. 1 along tangent line A-A with schematic diagram.Feed path 5 rotates towards the direction of arrow 37 with the armature plate 3 of armature 1.In the periphery of feed path 5, be provided with breach 25, through described breach cooling agent from the feed path 5 rotating flow into radially connecting portion 23, in this case interface channel 24.Interface channel 24 is radially arranged in star in armature plate 3 with respect to feed path 5 in Fig. 3.End in its outside, connecting portion passage 24 radially in the peripheral region of armature plate 3, be transferred to feed path 5 axially parallels extend and the cooling duct 27 that is radially spaced with feed path 5 in, described cooling duct is axially through armature plate 3.
Claims (9)
1. for the armature rotor of motor (2), comprising:
-axial arranged, for supplying with the feed path (5) of cooling agent;
The cooling duct (27) that the rotation of-at least one and described armature (1) is radially spaced, described cooling duct is connected with described feed path (5) by connecting portion (23) radially;
-cooling duct outlet (31), for discharging supplied with cooling agent,
It is characterized in that,
Described cooling duct outlet (31) has radial spacing with described feed path (5).
2. armature rotor according to claim 1, is characterized in that, described feed path (5) in axial direction seals at described radially connecting portion (23) downstream afterwards.
3. armature rotor according to claim 1 and 2, is characterized in that, described radially connecting portion (23) be arranged on plate-like, be bearing in the coolant distributor (23) on described feed path (5).
4. armature rotor according to claim 3, is characterized in that, described coolant distributor is comprised of two pans, is furnished with radially connecting portion (23) between described two pans.
5. according to the armature rotor described in any one in claim 1 or 2, it is characterized in that, described radially connecting portion (23) has the interface channel (24) of a plurality of stars, and described interface channel couples together described feed path (5) and described cooling duct (27) respectively.
6. according to any or a plurality of described armature rotor in claim 1 to 5, it is characterized in that, described radially connecting portion (23) seals and closes and for holding cooling fluid at armature outer.
7. motor, it comprises:
-according to the armature rotor described in any one in claim 1 to 6 (13),
-stator structure (7,9),
It is characterized in that,
The feed path (5) of described armature rotor (13) is arranged in the coolant entrance (6) of described stator structure (7,9) and locates, and wherein said coolant entrance (6,10) seals by the first sealing, especially the first labyrinth packing portion (11) to the passage of described feed path (5).
8. motor according to claim 7, is characterized in that, between described the first labyrinth packing portion (11) and described stator structure (7,9), is furnished with radial axle sealing (36).
9. according to the motor described in any one in claim 7 to 8, it is characterized in that, cooling duct outlet (31) radially inwardly seals and radially outward by the 3rd labyrinth packing portion (28), seals with Leakage prevention by the second sealing (14), especially the second labyrinth packing portion.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011078341.5 | 2011-06-29 | ||
| DE102011078341 | 2011-06-29 | ||
| DE102011084083A DE102011084083A1 (en) | 2011-06-29 | 2011-10-06 | Rotor rotor for an electric motor |
| DE102011084083.4 | 2011-10-06 | ||
| PCT/EP2012/061142 WO2013000704A2 (en) | 2011-06-29 | 2012-06-13 | Rotor armature for an electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103620919A true CN103620919A (en) | 2014-03-05 |
| CN103620919B CN103620919B (en) | 2017-06-09 |
Family
ID=47355071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280031959.0A Active CN103620919B (en) | 2011-06-29 | 2012-06-13 | For the armature rotor of motor |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2735087A2 (en) |
| CN (1) | CN103620919B (en) |
| DE (1) | DE102011084083A1 (en) |
| WO (1) | WO2013000704A2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2876579C (en) | 2012-06-12 | 2015-11-17 | Husqvarna Ab | Electric cutting system |
| US10554091B2 (en) | 2014-08-22 | 2020-02-04 | Regal Beloit America, Inc. | Electric machine with rotor, stator and housing cooling passages |
| DE102018222634A1 (en) | 2018-12-20 | 2020-06-25 | Volkswagen Aktiengesellschaft | Rotor for an electrical machine |
| DE102021203303A1 (en) * | 2021-03-31 | 2022-10-06 | Valeo Siemens Eautomotive Germany Gmbh | Electrical machine with a sleeve at the end portion of a rotor |
| DE102021126074A1 (en) | 2021-10-07 | 2023-04-13 | Audi Aktiengesellschaft | Electrical machine with rotor cooling |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002325394A (en) * | 2001-04-26 | 2002-11-08 | Nissan Motor Co Ltd | Armature |
| JP2008219960A (en) * | 2007-02-28 | 2008-09-18 | Toyota Central R&D Labs Inc | Rotary electric machine |
| CN101305510A (en) * | 2005-11-09 | 2008-11-12 | 株式会社东芝 | Rotor for electric rotating machine and electric rotating machine |
| EP2299564A1 (en) * | 2008-06-02 | 2011-03-23 | NTN Corporation | Cooling structure of motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5424593A (en) | 1985-07-15 | 1995-06-13 | Sundstrand Corporation | Generator rotor cooling |
| JPH0946973A (en) | 1995-07-28 | 1997-02-14 | Nikkiso Co Ltd | Rotor cooling construction for motor |
| US20080231126A1 (en) | 2007-03-23 | 2008-09-25 | Rajendra Narayan Telore | Motor cooling arrangement |
-
2011
- 2011-10-06 DE DE102011084083A patent/DE102011084083A1/en active Pending
-
2012
- 2012-06-13 CN CN201280031959.0A patent/CN103620919B/en active Active
- 2012-06-13 EP EP12728213.5A patent/EP2735087A2/en not_active Ceased
- 2012-06-13 WO PCT/EP2012/061142 patent/WO2013000704A2/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002325394A (en) * | 2001-04-26 | 2002-11-08 | Nissan Motor Co Ltd | Armature |
| CN101305510A (en) * | 2005-11-09 | 2008-11-12 | 株式会社东芝 | Rotor for electric rotating machine and electric rotating machine |
| JP2008219960A (en) * | 2007-02-28 | 2008-09-18 | Toyota Central R&D Labs Inc | Rotary electric machine |
| EP2299564A1 (en) * | 2008-06-02 | 2011-03-23 | NTN Corporation | Cooling structure of motor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013000704A3 (en) | 2013-08-15 |
| CN103620919B (en) | 2017-06-09 |
| DE102011084083A1 (en) | 2013-01-03 |
| WO2013000704A2 (en) | 2013-01-03 |
| EP2735087A2 (en) | 2014-05-28 |
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