CH92265A - Arrangement for cooling electrical machines. - Google Patents
Arrangement for cooling electrical machines.Info
- Publication number
- CH92265A CH92265A CH92265DA CH92265A CH 92265 A CH92265 A CH 92265A CH 92265D A CH92265D A CH 92265DA CH 92265 A CH92265 A CH 92265A
- Authority
- CH
- Switzerland
- Prior art keywords
- liquid
- arrangement according
- iron cores
- spaces
- arrangement
- Prior art date
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/22—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Description
Anordnung zur Kühlung von elektriselien 51faseliiuen. Der Gedanke; elektrische Maschinen an statt durch Luft mittelst Flüssigkeit zei kiili- len, ist nicht mehr neu.
Die praktische Ans führung der Flüssigkeitskühlung scheiterte je doch an der störenden Wirkung des um laufenden Teils, die einerseits durch die Flieh kraft, anderseits durch die relative Bewegung zwischen den beiden Teilen herbeigeführt wird.
Selbst Vorschläge sind nur so weit ge diehen, die Flüssigkeitskühlung des Ankers allein durch Einkapselung desselben zu er möglichen, wobei aber für den nach aussen ebenfalls abgeschlossenen Magnetring wegen der störenden Einwirkung des umlaufenden Ankers die Luftkühlung beibehalten werden musste.
Gemäss der Erfindung wird die Flüssig keitskühlung durch die vollst"'indige Beseiti gung der erwähnten Störungen für beide Teile der elektrischen Maschinen ermöglicht. Dies wird durch eine Anordnung erreicht, die dadurch ausgezeichnet ist, dass der ru- hende und der umlaufende Teil der Maschine durch eigene Gehäuseteile gegeneinander ab geschlossen sind,
so dass die Kühlflüssigkeit des einen "Teils den andern Teil oder dessen Ge- hiinse nicht bestreicht. Das die Kühlflüssig- keit einschliessende Gehäuse kann am ein- fachstcn den iunhinfenden oder ruhenden Teil der Maschine völlig in sich schliessen:
es kann aber auch zum Beispiel nur die eine stärkere Kühlinig beanspruchenden Teile um fassen.
Die Gehäuse können in verschiedenster Weise gebaut werden. Einige Ausführungs beispiele sind in der Zeichnung veranschau licht.
Gein@iss Fig. 1 werden die Gehäuse bei einem Turbogenerator mit Hilfe zweier den Luftspalt durchsetzender und über die Stirn- verbindungen hinausragender Verschalungen leergestellt. Die eine Verschalung, ein an den Seitenschilden 1 und ? des ruhenden Teils dicht schliessend befestigtes Rohr 3, schliesst das Gehäuse des ruhenden Teils nach innen ab.
Die zweito Verschalung besteht aus einem über den unilaufenden Teil gezogenen Rohr 4, das an den beiden Enden durch über die Wc)lciiteile 7 und F, gestülpte Scheiben 7 und 8 dicht abgeschlossen ist. Sowohl der ruhende, wie auch der umlaufende Teil sind somit zu je einem dicht geschlossenen Ge häuse ausgebildet, das mit dem flüssigen Kühlmittel gefüllt wird.
Die Spulenköpfe 18, 19 des ruhenden, so wie 20, 21 des umlaufenden Teils befinden sich in den mit Kühlflüssigkeit gefüllten Räu men 22, 23 bezw. 24, 25 der Gehäuse, so dass ihnen eine wirksame Kühlung zuteil wird. Zur Kühlung der Eisenkerne 13, 26 sind in diesen - wie bei der Luftkühlung - in der Wellenrichtung verlaufende Nuten 27, 28, 29, Bohrungen 30, Langlöcher 31 usw. (Fig. 8) oder zwischen den Blechpaketen 32 senk recht zur Welle verlaufende Spalte 33 (Fig, 1) ausgebildet, durch welche das Kühlmittel von einem Flüssigkeitsraum in den andern geleitet wird.
Um die Wicklungen 34 und 35 durch die Kühlflüssigkeit ummittelbar bestreichen zu lassen, sind dieselben in den Nuten 36 und 37 der Eisenkerne unter Belassung eines freien Durchtrittsquerschnittes für die Kühlflüssig keit angeordnet.
Als solche freie Durchtritts- querschnitte können entsprechende Aus schnitte 27, 28 der Nuten 38 (Fig. 8), Aus sparungen 39. 40 im Leitermaterial selbst (Fig. 3 und 4), innerhalb der Isolation zwi schen die Leiter eingesetzte Rohre 41 (Fig. 6), die Zwischenräume 42, -1,3 und 44 zwi schen mehreren innerhalb der Isolation un tergebrachten Leitern (Fig. 5, 7 und 12) dienen.
Bei Maschinen, deren Luftspalt zur Auf nahme der beiden Verschalungen 3, 4 nicht breit genug ist, oder bei denen die Verscha lung des umlaufenden Teils wegen der sehr grossen Umfangsgeschwindigkeit ztt stark ausfallen würde, werden für ein Gehäuse an Stelle einer einzigen durchgehenden Ver schalung deren zwei verwendet, die sich nur auf die die Stirnverbindungen enthaltenden Endteile der Maschine, erstrecken. Eine sol che Anordnung ist in Fig. 2 dargestellt, wo die innern Enden der an Stelle der Verscha lung 3 (Fig. 1) verwendeten Rohre 9 und 10 an den Endscheiben 11 und 12 des Ständer blechkörpers 13 angedichtet sind.
Ebenso können die Läuferenden durch einerseits an die Scheiben 7 und 8 (Fig. 1), anderseits an die Endscheiben 14, 15 des Läufers ange schlossene Rohre -oder, wie in Fig. 2 dar gestellt, durch in gleicher Weise abgedichtete kappenartige Verschalungen 16 und 17 abge schlossen werden. Natürlich könnten die Rohre 9 und 10 mit den Seitenschilden 1 bezw. 2 aus einem Stücke bestehen. Auch können die verschiedenen Ausführungen für den stehenden und drehenden Teil nach Be lieben kombiniert werden.
Damit die Kühlflüssigkeit bei nur seitlichen Verschalungen von dem einen Flüssigkeits raum 24 in den andern 25 geleitet werden kann, ohne zwischen den Blechlamellen oder durch die offenen Nuten entweichen zu kön nen, werden Rohre 46, 48 in die in der Wel lenrichtung verlaufenden Nuten bezw. Öff nungen des Eisenkernes gelegt, welche die seitlichen Flüssigkeitsre ume miteinander ver binden und in den Endscheiben 14, 15 ab gedichtet münden. Die letzteren werden züa diesem Zwecke auch dann mit geschlosse nen Nuten ausgeführt, wenn die Eisenkerne offene Nuten besitzen.
In Fig. 1i und 12 ist diese Anordnung-' für den ruhenden Teil in grösserem Massstabe dargestellt. Die Dich- tungsrolire 46, 48 "-erden aus Metall oder, wenn notwendig, aus entsprechendem Isolier material hergestellt. Hierbei können alle Aus führungen nach Fig. 3 bis 7 Verwendung finden.
Der Weg des Kühlmittels durch die Ma schine ist folgender: Beim ruhenden Teil: Eintrittsöffnung 49, Raum 22, achsiale Öffnun gen des Blechkörpers, Raum 23, Durchgang ::'ü, Raum 51; bei der Ausführung nach Fig. 1 Spalte 33, Austrittsöffnung 52. Beim umlau fenden Teil: Wellenbohrungen 53 und 54, Raum 24, achsiale Nuten und Öffnungen des Eisenkörpers, Raum 25, Wellenbohrungen 55 und 56. Die austretende Flüssigkeit wird vor der Wiederverwendung in einen Kühler ge leitet.
Bei der Ausführungsform nach Fig. 9 und 10, welche einen massiv ausgeführten, um laufenden Teil eines Turbogenerators dar- stellen. werden die seitlichen Flüssigkeit.; räume statt der Verschalungen durch die Wellenflanschen 57, 58 gebildet. Ausserdem sind die Nuten 60 für die Wicklungen 59 als geschlossene Bohrungen des Eisenkörpers ausgeführt, welche, falls Hohlräume zwischen einzelnen Leitern oder zwischen diesen und den Nutenwänden vorgesehen sind, ohne wei teres als Leitungen für das flüssige Kühl mittel verwendet werden können, so dass das Einziehen besonderer Rohre, wie nach Fig. 11 und 12, überflüssig wird.
Selbstverständlich kann man statt eines zusammenhängenden Gehäuses für die Kühl flüssigkeit auch zwei oder mehrere Gehäuse verwenden, ohne dem Erfindungsgedanken Abbruch zu tun.
Arrangement for cooling electrical cables 51 fibers. The thought; Electric machines instead of chilling through air by means of liquid are no longer new.
The practical approach to liquid cooling failed, however, because of the disruptive effect of the running part, which is brought about on the one hand by the centrifugal force and on the other hand by the relative movement between the two parts.
Even proposals are only as far as the liquid cooling of the armature is possible by encapsulating the same, but the air cooling had to be maintained for the magnet ring, which is also closed from the outside, because of the disruptive effect of the rotating armature.
According to the invention, the liquid cooling is made possible by the complete elimination of the malfunctions mentioned for both parts of the electrical machines. This is achieved by an arrangement which is characterized by the fact that the stationary and the rotating part of the machine pass through own housing parts are closed against each other,
so that the coolant of one part does not brush the other part or its casing. The housing enclosing the coolant can simply completely enclose the moving or resting part of the machine:
but it can also, for example, only include those parts that require a stronger cooling element.
The housings can be built in a wide variety of ways. Some execution examples are illustrated in the drawing.
According to FIG. 1, the housings of a turbo generator are emptied with the aid of two casings which penetrate the air gap and protrude beyond the end connections. The one casing, one on the side shields 1 and? of the stationary part tightly fastened pipe 3, closes the housing of the stationary part from the inside.
The second cladding consists of a tube 4 drawn over the non-running part, which is tightly closed at both ends by disks 7 and 8 that are slipped over the toilet parts 7 and F. Both the stationary and the rotating part are thus each formed into a tightly closed Ge housing that is filled with the liquid coolant.
The coil heads 18, 19 of the resting, such as 20, 21 of the rotating part are located in the coolant-filled Räu men 22, 23 respectively. 24, 25 of the housing, so that they are given effective cooling. To cool the iron cores 13, 26 are in these - as with air cooling - in the shaft direction extending grooves 27, 28, 29, bores 30, slots 31, etc. (Fig. 8) or between the laminated cores 32 perpendicular to the shaft extending column 33 (Fig, 1), through which the coolant is passed from one liquid space into the other.
In order to allow the windings 34 and 35 to be coated directly by the cooling liquid, the same are arranged in the grooves 36 and 37 of the iron cores, leaving a free passage cross section for the cooling liquid.
As such free passage cross-sections, corresponding cutouts 27, 28 of the grooves 38 (Fig. 8), recesses 39, 40 in the conductor material itself (Figs. 3 and 4), pipes 41 inserted within the insulation between the conductors (Fig . 6), the spaces 42, -1,3 and 44 between tween several conductors housed within the insulation (Fig. 5, 7 and 12) are used.
In machines whose air gap is not wide enough to accommodate the two casings 3, 4, or in which the casing of the rotating part would be strong because of the very high circumferential speed, they are used for a housing instead of a single continuous casing two which only extend to the end parts of the machine containing the end connections. Such an arrangement is shown in Fig. 2, where the inner ends of the tubes 9 and 10 used in place of the casing 3 (Fig. 1) on the end plates 11 and 12 of the stator sheet metal body 13 are sealed.
Likewise, the rotor ends can be connected by on the one hand to the disks 7 and 8 (Fig. 1), on the other hand to the end disks 14, 15 of the rotor attached pipes -or, as shown in Fig. 2, by in the same way sealed cap-like cladding 16 and 17 to be completed. Of course, the tubes 9 and 10 could bezw with the side shields 1. 2 consist of one piece. The different versions for the stationary and rotating part can also be combined as desired.
So that the cooling liquid can be passed from the one liquid space 24 into the other 25 without being able to escape between the sheet metal lamellas or through the open grooves, pipes 46, 48 are in the grooves running in the Wel lenrichtung respectively. Publ openings of the iron core, which bind the lateral liquid spaces with each other ver and open into the end plates 14, 15 from sealed. The latter are also designed with closed grooves for this purpose if the iron cores have open grooves.
In Fig. 1i and 12, this arrangement is shown for the resting part on a larger scale. The sealing roller 46, 48 ″ earths made of metal or, if necessary, made of an appropriate insulating material. All of the designs according to FIGS. 3 to 7 can be used here.
The path of the coolant through the machine is as follows: When the part is at rest: inlet opening 49, space 22, axial openings of the sheet metal body, space 23, passage :: 'ü, space 51; in the embodiment according to Fig. 1 column 33, outlet opening 52. When umlau fenden part: shaft bores 53 and 54, space 24, axial grooves and openings of the iron body, space 25, shaft bores 55 and 56. The emerging liquid is before reuse in a Cooler.
In the embodiment according to FIGS. 9 and 10, which represent a solid part of a turbo generator running around. become the lateral liquid .; instead of the casings formed by the shaft flanges 57, 58. In addition, the grooves 60 for the windings 59 are designed as closed bores in the iron body, which, if cavities are provided between individual conductors or between these and the groove walls, can be used as lines for the liquid coolant so that it can be drawn in special pipes, as shown in FIGS. 11 and 12, become superfluous.
Of course, instead of a coherent housing for the cooling liquid, two or more housings can also be used without detracting from the concept of the invention.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE337561T | 1917-12-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH92265A true CH92265A (en) | 1921-12-16 |
Family
ID=6221596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH92265D CH92265A (en) | 1917-12-29 | 1919-09-04 | Arrangement for cooling electrical machines. |
Country Status (6)
Country | Link |
---|---|
US (1) | US1448700A (en) |
AT (1) | AT97598B (en) |
CH (1) | CH92265A (en) |
DE (1) | DE337561C (en) |
FR (1) | FR543794A (en) |
GB (1) | GB172015A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1105979B (en) * | 1953-04-15 | 1961-05-04 | Siemens Ag | Closed, surface-cooled electrical machine |
DE975389C (en) * | 1954-05-01 | 1961-11-16 | Siemens Ag | Bars for electrical machines |
Families Citing this family (73)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2735026A (en) * | 1956-02-14 | moerk | ||
DE748606C (en) * | 1937-09-21 | 1944-11-08 | Arrangement of the ventilation ducts in the active iron parts of electrical machines, especially those with a large diameter | |
DE951463C (en) * | 1942-04-28 | 1956-10-31 | Siemens Ag | Cooling of electrical machines |
US2497650A (en) * | 1945-12-28 | 1950-02-14 | Gen Electric | Dynamoelectric machine |
DE924816C (en) * | 1948-10-02 | 1955-03-07 | Siemens Ag | Electric machine with liquid-cooled rotor |
US2632092A (en) * | 1949-06-09 | 1953-03-17 | Ohio Crankshaft Co | Means and method for high-frequency induction heating |
US2634375A (en) * | 1949-11-07 | 1953-04-07 | Guimbal Jean Claude | Combined turbine and generator unit |
DE928056C (en) * | 1950-07-15 | 1955-05-23 | Siemens Ag | Closed-type electrical machine with cooling device |
DE939392C (en) * | 1951-04-28 | 1956-02-23 | Demag Zug Gmbh | Roller table motor |
DE974822C (en) * | 1951-06-26 | 1961-05-04 | Emu Unterwasserpumpen G M B H | Mud pump |
DE948714C (en) * | 1951-09-28 | 1956-09-06 | Westinghouse Electric Corp | Device for cooling the stator windings of high-voltage, high-performance turbo generators |
GB732783A (en) * | 1951-12-12 | 1955-06-29 | Vickers Electrical Co Ltd | Improvements relating to the construction of dynamo electric machines |
BE516189A (en) * | 1951-12-12 | |||
US2898484A (en) * | 1952-01-19 | 1959-08-04 | Krastchew Christoslaw | Refrigeration cooling of electrical machines |
DE1014215B (en) * | 1952-03-10 | 1957-08-22 | Licentia Gmbh | Liquid-cooled rotor winding for electrical machines |
DE896086C (en) * | 1952-04-04 | 1953-11-09 | Brown | Electric machine, especially high-speed generator, each with a separate, gas-tight sealed space for the stand and the runner |
US2722616A (en) * | 1952-04-18 | 1955-11-01 | Westinghouse Electric Corp | Evaporative cooling system for dynamo-electric machines |
DE1026409B (en) * | 1952-09-24 | 1958-03-20 | Siemens Ag | Internally cooled conductors for electrical machines consisting of several windings connected in series |
US2791308A (en) * | 1953-01-02 | 1957-05-07 | Vickers Inc | Magnetic field responsive coupling device with cooling means |
US2970232A (en) * | 1958-10-21 | 1961-01-31 | Gen Electric | Conductor-cooled generator |
DE973696C (en) * | 1954-02-24 | 1960-05-05 | Siemens Ag | Bars for electrical machines |
CA608203A (en) * | 1954-07-01 | 1960-11-08 | C. Hagg Arthur | Totally enclosed canned motor pump |
US2770106A (en) * | 1955-03-14 | 1956-11-13 | Trane Co | Cooling motor compressor unit of refrigerating apparatus |
US2746269A (en) * | 1955-03-17 | 1956-05-22 | Trane Co | Plural stage refrigerating apparatus |
US2768511A (en) * | 1955-03-21 | 1956-10-30 | Trane Co | Motor compressor cooling in refrigerating apparatus |
CA562880A (en) * | 1955-12-14 | 1958-09-02 | Westinghouse Electric Corporation | Liquid-cooled dynamoelectric machine |
US2994004A (en) * | 1958-02-19 | 1961-07-25 | Westinghouse Electric Corp | Sealed motor pump unit |
DE1118343B (en) * | 1958-04-28 | 1961-11-30 | Zd Y V I | Liquid-tight encapsulation of the entire runner with the direct liquid cooling of the runner windings of electrical machines |
US3240967A (en) * | 1959-07-31 | 1966-03-15 | Krastchew Christoslaw | Cooling arrangement for electric machines |
DE1180832B (en) * | 1959-08-18 | 1964-11-05 | Gen Electric | Tightly encapsulated runner for electrical machines through which liquid flows |
DE1275671B (en) * | 1961-11-30 | 1968-08-22 | Marcel Baylac | Fluid-cooled rotor of a turbo generator |
GB977070A (en) * | 1962-04-23 | 1964-12-02 | Gen Electric | Liquid-cooled rotor for a dynamo-electric machine |
DE1199389B (en) * | 1963-09-27 | 1965-08-26 | Siemens Ag | Coolant circuit for runners of electrical machines, especially turbo generators, with directly liquid-cooled winding, in which a liquid medium is made to evaporate in the waveguides to dissipate heat |
US3510700A (en) * | 1969-02-24 | 1970-05-05 | Nikolai Grigorievich Grinchenk | Device for feeding coolant to hollow conductors of stator bar winding in electric machines |
US3629627A (en) * | 1970-07-06 | 1971-12-21 | Gen Motors Corp | Cooling arrangement for a dynamoelectric machine |
US3675056A (en) * | 1971-01-04 | 1972-07-04 | Gen Electric | Hermetically sealed dynamoelectric machine |
FR2525830A1 (en) * | 1982-04-23 | 1983-10-28 | Renault | ELECTRODYNAMIC MACHINE COOLED BY A LIQUID |
DE3932481A1 (en) * | 1989-09-28 | 1991-04-11 | Magnet Motor Gmbh | ELECTRIC MACHINE WITH FLUID COOLING |
DE4138268A1 (en) * | 1991-11-21 | 1993-05-27 | Klein Schanzlin & Becker Ag | ELECTRIC MOTOR |
US5365132A (en) * | 1993-05-27 | 1994-11-15 | General Electric Company | Lamination for a dynamoelectric machine with improved cooling capacity |
JP2001069693A (en) * | 1999-08-26 | 2001-03-16 | Honda Motor Co Ltd | Dynamo-electric machine |
US6288460B1 (en) | 1999-11-03 | 2001-09-11 | Baldor Electric Company | Fluid-cooled, high power switched reluctance motor |
EP1542336A1 (en) * | 2002-08-21 | 2005-06-15 | Toyota Jidosha Kabushiki Kaisha | Vehicle motor |
US6897581B2 (en) * | 2002-10-04 | 2005-05-24 | Honeywell International Inc. | High speed generator with the main rotor housed inside the shaft |
DE102004018525A1 (en) * | 2004-04-14 | 2005-11-17 | Voith Turbo Gmbh & Co. Kg | Winding unit |
DE102005003476B4 (en) * | 2005-01-25 | 2014-11-27 | Johann NEISZER | Canned motor with closed cooling system |
US7482725B2 (en) * | 2005-12-20 | 2009-01-27 | Honeywell International Inc. | System and method for direct liquid cooling of electric machines |
US20070228847A1 (en) * | 2006-03-30 | 2007-10-04 | Korea Fluid Machinery Co., Ltd. | High speed electric motor |
GB0702997D0 (en) * | 2007-02-16 | 2007-03-28 | Rolls Royce Plc | A cooling arrangement of an electrical machine |
DE102007021720B4 (en) * | 2007-05-09 | 2014-01-23 | Siemens Aktiengesellschaft | Compressor system for underwater use in the offshore sector |
NO338460B1 (en) * | 2009-12-16 | 2016-08-15 | Smartmotor As | Electric machine, its rotor and its manufacture |
WO2011146690A2 (en) * | 2010-05-21 | 2011-11-24 | Remy Technologies, L.L.C. | Stator winding assembly and method |
FI124814B (en) * | 2010-10-18 | 2015-01-30 | Lappeenrannan Teknillinen Yliopisto | Electric machine stator and electric machine |
DE102010055821B4 (en) * | 2010-12-23 | 2014-09-25 | Avl Trimerics Gmbh | Electric machine with split tube and method for producing the same |
US20120161556A1 (en) * | 2010-12-28 | 2012-06-28 | Toyota Jidosha Kabushiki Kaisha | Superconducting electric motor |
US20130002067A1 (en) * | 2011-06-30 | 2013-01-03 | Bradfield Michael D | Electric Machine Module Cooling System and Method |
US9099900B2 (en) * | 2011-12-06 | 2015-08-04 | Remy Technologies, Llc | Electric machine module cooling system and method |
US9559569B2 (en) * | 2012-02-13 | 2017-01-31 | Ge Aviation Systems Llc | Arrangement for cooling an electric machine with a layer of thermally conducting and electrically insulating material |
US9419479B2 (en) * | 2013-03-14 | 2016-08-16 | Baldor Electric Company | Micro-channel heat exchanger for stator of electrical machine with supply header |
US9362788B2 (en) | 2013-03-14 | 2016-06-07 | Baldor Electric Company | Micro-channel heat exchanger integrated into stator core of electrical machine |
EP3154158B1 (en) | 2015-10-09 | 2020-04-15 | AVL List GmbH | Hysteresis motor-brake |
US10128701B2 (en) | 2016-08-17 | 2018-11-13 | Atieva, Inc. | Motor cooling system utilizing axial cooling channels |
US20180054094A1 (en) * | 2016-08-17 | 2018-02-22 | Atieva, Inc. | Motor Cooling System Utilizing Axial Cooling Channels |
US10158263B2 (en) | 2016-08-17 | 2018-12-18 | Atieva, Inc. | Motor cooling system utilizing axial cooling channels |
US10903701B2 (en) | 2016-08-17 | 2021-01-26 | Atieva, Inc. | Motor cooling system utilizing axial cooling channels |
DE102017204472A1 (en) * | 2017-03-17 | 2018-09-20 | Siemens Aktiengesellschaft | Stator with winding cooling and electric machine |
CN107181340A (en) * | 2017-06-27 | 2017-09-19 | 浙江皇冠电动工具制造有限公司 | A kind of permanent magnetic brushless with dustproof construction |
DE102019200098A1 (en) * | 2019-01-07 | 2020-07-09 | Audi Ag | Fluid-cooled rotor for an electrical machine |
US11462957B2 (en) | 2020-05-11 | 2022-10-04 | Atieva, Inc. | Motor cooling system utilizing axial coolant channels |
US11462958B2 (en) | 2020-05-11 | 2022-10-04 | Atieva, Inc. | Stator-integrated manifold assembly to supply coolant to axial coolant channels |
US11535097B2 (en) | 2020-05-11 | 2022-12-27 | Atieva, Inc. | Motor cooling system utilizing axial coolant channels |
JP7487644B2 (en) * | 2020-11-05 | 2024-05-21 | トヨタ自動車株式会社 | Cooling structure for rotating electrical machines |
DE102021133029B4 (en) | 2021-12-14 | 2024-01-04 | Schaeffler Technologies AG & Co. KG | stator |
-
1917
- 1917-12-29 DE DE1917337561D patent/DE337561C/en not_active Expired
-
1919
- 1919-03-18 US US283442A patent/US1448700A/en not_active Expired - Lifetime
- 1919-09-04 CH CH92265D patent/CH92265A/en unknown
-
1921
- 1921-03-23 AT AT97598D patent/AT97598B/en active
- 1921-11-22 GB GB31271/21A patent/GB172015A/en not_active Expired
- 1921-11-22 FR FR543794D patent/FR543794A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1105979B (en) * | 1953-04-15 | 1961-05-04 | Siemens Ag | Closed, surface-cooled electrical machine |
DE975389C (en) * | 1954-05-01 | 1961-11-16 | Siemens Ag | Bars for electrical machines |
Also Published As
Publication number | Publication date |
---|---|
AT97598B (en) | 1924-08-11 |
FR543794A (en) | 1922-09-08 |
US1448700A (en) | 1923-03-13 |
DE337561C (en) | 1921-09-28 |
GB172015A (en) | 1923-03-22 |
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