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DE924466C - Internally cooled conductors for electrical machines consisting of several individual conductors - Google Patents

Internally cooled conductors for electrical machines consisting of several individual conductors

Info

Publication number
DE924466C
DE924466C DES30017A DES0030017A DE924466C DE 924466 C DE924466 C DE 924466C DE S30017 A DES30017 A DE S30017A DE S0030017 A DES0030017 A DE S0030017A DE 924466 C DE924466 C DE 924466C
Authority
DE
Germany
Prior art keywords
conductors
electrical machines
several individual
internally cooled
conductor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DES30017A
Other languages
German (de)
Inventor
Gerhard Dipl-Ing Weller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DES30017A priority Critical patent/DE924466C/en
Application granted granted Critical
Publication of DE924466C publication Critical patent/DE924466C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/24Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)

Description

Aus dem Bestreben heraus, eine elektrische Maschine ohne Erhöhung des Bauaufwandes höher belasten zu können, hat man die Kühlung weiterentwickelt, und zwar in der Richtung, daß man den Leiter selbst durch ein in seiner Längsrichtung hindurchgeschicktes Kühlmittel kühlt. Die Außenkühlung wird also durch die Innenkühlung ersetzt oder ergänzt. Die hierdurch erzielten Vorteile sind, wie Berichte über ausgeführte Maschinen erkennen lassen, beträchtlich.Out of the endeavor to create an electric machine without elevation to be able to burden the construction costs higher, the cooling has been further developed, namely in the direction that the conductor itself through a in its longitudinal direction coolant sent through it cools. The external cooling is therefore through the internal cooling replaced or supplemented. The benefits achieved by doing this are like reports on running Revealing machines, considerably.

Zur Bildung der Kühlkanäle werden nach den bekannten Vorschlägen profilierte Leiter, etwa von U-förmigem Querschnitt, verwendet, die, in der Nut übereinandergelegt, zwischen sich die Kühlkanäle bilden. Die Verwendung profilierter Leiter verteuert aber die Herstellung und hat außerdem den Nachteil, daß man nur eine verhältnismäßig kleine Zahl von Leitern in der Nut unterbringen kann, während die Leiterquerschnitte anwachsen. Die hierdurch bedingten hohen Stromstärken führen zu Schwierigkeiten für die Schleifringe und die Erregermaschine.To form the cooling channels are profiled according to the known proposals Conductor, for example with a U-shaped cross-section, is used, which, placed one on top of the other in the groove, form the cooling channels between them. The use of profiled conductors makes it more expensive but the production and also has the disadvantage that you only have a proportionate can accommodate small number of conductors in the groove, while the conductor cross-sections to grow. The resulting high currents lead to difficulties for the slip rings and the exciter.

Gemäß der Erfindung wird eine Innenkühlung mit Längsströmung des Kühlmittels geschaffen, bei der Leitermaterial handelsüblichen Querschnitts verwendet werden kann, und zwar wird das gemäß der Erfindung dadurch ermöglicht, daß Einzelleiter von rechteckigem Querschnitt in an sich bekannter Weise quer zur Längsrichtung gewellt und mit gegeneinander versetzten Wellungen in die Nut eingelegt sind. Die Wellung läßt sich ohne Schwierigkeiten und mit nur geringem Zeitaufwand etwa auf einer Biegemaschine herstellen.According to the invention, internal cooling with a longitudinal flow of the coolant is achieved created, are used in the conductor material of commercially available cross-section can, and that is made possible according to the invention in that single conductors corrugated by a rectangular cross-section in a manner known per se transversely to the longitudinal direction and are inserted into the groove with corrugations offset from one another. The curl can be carried out on a bending machine without difficulty and with little expenditure of time produce.

Die Erfindung sei an Hand eines Ausführungsbeispiels erläutert, das zwei Leiter 1 und 2 zeigt. Naturgemäß kann eine größere Anzahl von Einzelleitern in dieser Weise in der Nut übereinandergeschichtet sein.The invention will be explained using an exemplary embodiment that shows two conductors 1 and 2. Naturally, a larger number of individual conductors can be used be stacked in this way in the groove.

Die Leiter 1 und 2 sind, wie es die. Figur zeigt, gewellt und mit den Wellungen gegeneinander versetzt. Das bei a zuströmende Kühlmittel durchfließt zunächst den Raum b unterhalb des Leiters 1 und tritt bei c über den Leiter 2, den es im Raum d bestreicht. Bei e tritt das Kühlmittel wieder unter den Leiter 1 usf. Entsprechend nimmt das bei f eintretende Kühlmittel seinen Weg über den Raum g oberhalb des Leiters 2, tritt bei h unter den Leiter 1, fließt durch den Raum i, tritt bei h wieder nach oben usf. Es ist naturgemäß nicht erforderlich, daß die Wellung gerade die in der Figur dargestellte Form hat. Es wäre z. B. auch möglich, eine Zickzackform anzuwenden.The conductors 1 and 2 are like the ones. Figure shows, corrugated and offset against each other with the corrugations. The coolant flowing in at a first flows through space b below conductor 1 and at c passes over conductor 2, which it sweeps in space d. At e the coolant enters again under the conductor 1 and so on. Correspondingly, the coolant entering at f takes its way via the space g above the conductor 2, enters under the conductor 1 at h, flows through the space i, and comes up again at h It is of course not necessary that the corrugation just has the shape shown in the figure. It would be B. also possible to use a zigzag shape.

Zur Vermeidung von Mißverständnissen sei ausdrücklich darauf hingewiesen, daß es sich bei der Erfindung um eine Leiterkühlung handelt, bei der der Kühlstrom längs des Leiters geführt wird. Es gibt nämlich Vorschläge mit ähnlicher Leiterausbildung, die auf dem Gedanken beruhen, innerhalb des Leiters radiale Kühlschlitze zu bilden, die von der Kühlluft mit radial nach innen und außen gerichteter Strömung durchflossen werden. Unter anderem hat man dabei auch vorgeschlagen, die Leiter wellenförmig zu knicken. Legt man jetzt mehrere solcher Leiter mit ihren Auskröpfungen aufeinander, so entstehen Radialschlitze für die Kühlluft. Eine Längsströmung des Kühlmittels, die der Erfindung zugrunde liegt, ist bei der älteren Anordnung nicht möglich, da die übereinanderliegenden Auskröpfungen jeweils an der Nutwand ' anliegen und dem Kühlmittel den axialen Weg versperren. Der ältere Vorschlag mag günstiger sein als die Anwendung von Kühlbohrungen in den Läuferzähnen, jedoch erlaubt er nicht die Erreichung der heute geforderten Strombelastungswerte des Leiters, da erfahrungsgemäß die Wanderungsgeschwindigkeit der Wärme im Kupfer nicht groß genug ist, um sie an einzelnen, voneinander getrennten Punkten abzuführen. Dieser Umstand war j a einer der Gesichtspunkte, die zur Anwendung des in seiner Längsrichtung gekühlten Leiters geführt haben.To avoid misunderstandings, it is expressly pointed out that that the invention is a conductor cooling in which the cooling flow is guided along the conductor. There are proposals with similar leadership training, based on the idea of forming radial cooling slots within the conductor, through which the cooling air flows with a radially inward and outward flow will. Among other things, it has also been suggested that the ladder be wavy to kink. If you put several such conductors on top of one another with their crankings, this creates radial slots for the cooling air. A longitudinal flow of the coolant, which the invention is based on, is not possible with the older arrangement because the superimposed cranks each rest on the groove wall 'and the Block the axial path of coolant. The older suggestion may be cheaper than the use of cooling holes in the rotor teeth, but it does not allow the Achievement of the current load values of the conductor required today, as experience has shown the rate of migration of heat in copper is not great enough to hold it up individual, separate points. That was a fact of the points of view for the application of the conductor cooled in its longitudinal direction have led.

Claims (1)

PATENTANSPRUCH: Aus mehreren Einzelleitern bestehender, mit Längsströmung des Kühlmittels innengekühlter Leiter für elektrische Maschinen, dadurch gekennzeichnet; daß Einzelleiter von rechteckigem Querschnitt in an sich bekannter Weise quer zur Längsrichtung gewellt und mit gegeneinander versetzten Wellungen in die Nut eingelegt sind. Angezogene Druckschriften: Französische Patentschrift Nr. 778 9i6.PATENT CLAIM: Consisting of several individual ladders, with longitudinal flow the coolant of internally cooled conductors for electrical machines, characterized in that; that individual conductors of rectangular cross-section in a known manner transversely to Corrugated lengthways and inserted into the groove with staggered corrugations are. References: French Patent No. 778 9i6.
DES30017A 1952-08-31 1952-08-31 Internally cooled conductors for electrical machines consisting of several individual conductors Expired DE924466C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES30017A DE924466C (en) 1952-08-31 1952-08-31 Internally cooled conductors for electrical machines consisting of several individual conductors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES30017A DE924466C (en) 1952-08-31 1952-08-31 Internally cooled conductors for electrical machines consisting of several individual conductors

Publications (1)

Publication Number Publication Date
DE924466C true DE924466C (en) 1955-03-03

Family

ID=7479988

Family Applications (1)

Application Number Title Priority Date Filing Date
DES30017A Expired DE924466C (en) 1952-08-31 1952-08-31 Internally cooled conductors for electrical machines consisting of several individual conductors

Country Status (1)

Country Link
DE (1) DE924466C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023232180A1 (en) * 2022-06-02 2023-12-07 Schaeffler Technologies AG & Co. KG Power-generating component of an electric rotation machine, method for producing a power-generating component, and electric rotation machine
DE102022120066A1 (en) 2022-06-02 2023-12-07 Schaeffler Technologies AG & Co. KG Power-generating component of a rotary electric machine, method for producing a power-generating component and rotary electric machine
WO2024028111A1 (en) * 2022-08-03 2024-02-08 Magna powertrain gmbh & co kg Electrical machine
WO2024046522A1 (en) * 2022-08-29 2024-03-07 Schaeffler Technologies AG & Co. KG Stator and kit-of-parts

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR778916A (en) * 1933-10-05 1935-03-26 Inductor cooling of large turbogenerators

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR778916A (en) * 1933-10-05 1935-03-26 Inductor cooling of large turbogenerators

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023232180A1 (en) * 2022-06-02 2023-12-07 Schaeffler Technologies AG & Co. KG Power-generating component of an electric rotation machine, method for producing a power-generating component, and electric rotation machine
DE102022120066A1 (en) 2022-06-02 2023-12-07 Schaeffler Technologies AG & Co. KG Power-generating component of a rotary electric machine, method for producing a power-generating component and rotary electric machine
DE102022120066B4 (en) 2022-06-02 2024-07-25 Schaeffler Technologies AG & Co. KG Power-generating component of an electric rotary machine, method for producing a power-generating component and electric rotary machine
WO2024028111A1 (en) * 2022-08-03 2024-02-08 Magna powertrain gmbh & co kg Electrical machine
WO2024046522A1 (en) * 2022-08-29 2024-03-07 Schaeffler Technologies AG & Co. KG Stator and kit-of-parts

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