DE945771C - Electrical resistance with cooling channels - Google Patents

Electrical resistance with cooling channels

Info

Publication number
DE945771C
DE945771C DES35103D DES0035103D DE945771C DE 945771 C DE945771 C DE 945771C DE S35103 D DES35103 D DE S35103D DE S0035103 D DES0035103 D DE S0035103D DE 945771 C DE945771 C DE 945771C
Authority
DE
Germany
Prior art keywords
cooling channels
resistor
cooling
coolant
channels
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
DES35103D
Other languages
German (de)
Inventor
Dipl-Ing Emil Rainer
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 DES35103D priority Critical patent/DE945771C/en
Application granted granted Critical
Publication of DE945771C publication Critical patent/DE945771C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C1/00Details
    • H01C1/08Cooling, heating or ventilating arrangements
    • H01C1/082Cooling, heating or ventilating arrangements using forced fluid flow

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Description

Zur Kühlung mit Kühlkanälen versehene elektrische Widerstände werden gewöhnlich in Foirm, von Rohren hergestellt, die in der Längsrichtung vom Kühlmittel durchströmt werden. Dies. hat den Nachteil, daß sich die Temperatur des Kühlmittels an den, einzelnen Stellen des. Widerstandskörpers, oft nicht in ausreichendem Maße der dort auftretenden Erwärmung anpassen läBt. Bei langgestreekten Widerständen ist es außerdem. zuweilen schwierig, am Austrittsende des Kühlkanals noch einen zur Kühlung ausreichenden Temperaturunterschied zwischen Widerstandskörper und Kühlmittel aufrechtzu.erhalten;.Electrical resistors provided with cooling channels for cooling usually in foirm, made of tubes running lengthways from the coolant are flowed through. This. has the disadvantage that the temperature of the coolant at the, individual points of the resistance body, often not in sufficient measure can be adapted to the temperature rise occurring there. With long-stretched resistances it is also. sometimes difficult, another at the outlet end of the cooling channel Sufficient temperature difference between resistor body and coolant for cooling maintain.

Nach der Erfindung werden, diese Nachteile dar durch vermieden, daß die Kühlkanäle quer zur Längsrichtung des Widerstandskörpers engeardnet werden.According to the invention, these disadvantages are avoided by that the cooling channels are narrowed transversely to the longitudinal direction of the resistor body.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt. Der Widerstandskörper w enth.Lt mehrere quer zu seiner Längsrichtung, vorzugsweise senkrecht zu dieser, verlaufende Kühlkanäle k, durch die ein mittels, der Leitung Z zugeführtes Kühlmittel hindurchgedrückt ,wird,. Der an den Widerstandskörper anschließende Teil der Leitungswand besteht zweckmäßig aus Isolierstoff. Da die Kühlkanäle kurz sind, sind praktisch alle gekühlten Stellen des Widerstandskörpers mit frischem Kühlmittel in Berührung. Wenn die Erwärmung des. Widerstaudskörpes am Ende a größer ist als am Ende b, so kann: sein dem Ende a benachbarter Teil dadurch stärker gekühlt werden, daß die über die Länge des Widerstandskörpers, ungleich dicht verteilten Kühlkanäle im Bereich des Endes a dichter liegen als in der Zeichnung dargestellt ist.An embodiment of the invention is shown in simplified form in the drawing. The resistance body w contains several cooling channels k running transversely to its longitudinal direction, preferably perpendicular to it, through which a coolant supplied by means of the line Z is pressed. The part of the line wall adjoining the resistor body is expediently made of insulating material. Since the cooling channels are short, practically all of the cooled areas of the resistor body are in contact with fresh coolant. If the heating of the resistance body is greater at the end a than at the end b, its part adjacent to the end a can be cooled more so that the cooling channels, which are unevenly distributed over the length of the resistance body, are closer to the end a than is shown in the drawing.

Eine ähnliche Wirkung läBt sich .dadurch erreichen, d'aß die Kühlkanäle verschieden große Kühlflächen erhalten und an den stärker erwärmten Stellen des. Widerstandskörpers die Kühlkanäle mit größerer Kühlfläche liegen. Zu. deren Vergrößerung erhalten die Kanäle beispielsweise unrunden, etwa sternförmigen Querschnitt.A similar effect can be achieved by leaving the cooling ducts receive different sized cooling surfaces and at the more heated areas of the. Resistance body are the cooling channels with a larger cooling surface. To. their enlargement receive the channels, for example, non-circular, approximately star-shaped cross-section.

Auch durch die ungleiche Geschwindigkeit des Kühlmittels oder ungleiche Kühlmittelmengen in den einzelnen Kanälen kann die Kühlwirkung der verschiedenen Ervrärmung der einzelnen: Teile des Widerstandskörpers: angepaßt werden, so daß an den asn stärksten erwärmten. Stellen die Kühlmittelgesahwindigkeit oder Kühlmittelmenge azn. größten ist.Also due to the uneven speed of the coolant or unequal The amount of coolant in the individual channels can reduce the cooling effect of the various Warming up of the individual: parts of the resistance body: are adjusted so that most heated at the asn. Set the coolant speed or amount azn. greatest is.

Während in dem dargestellten Ausführungsbeispiel sämtliche quer liegende Kühlkanäle im Kühlmittelstrom parallel geschaltet sind" kann sich: die ParaJle1schaltung auch auf einzelne Gruppen von Kanälen beschränken, wogegen die Gruppen, untereinander in Reihe geschaltet werden. Ebenso können auch mehrere querliegende einzelne KühlkanHe im Kühlmittelstrom in Reihe geschaltet sein.While in the illustrated embodiment, all transverse Cooling channels in the coolant flow are connected in parallel "can be: the ParaJle1schalt also restrict to individual groups of channels, whereas the groups, among themselves can be connected in series. Several transverse individual cooling channels can also be used be connected in series in the coolant flow.

Das Kühlmittel kann auf der Austrittsseite wieder von einer Leitung aufgenommen und nach erfolgter Rückkühlung im Kreislauf der Eintrittsseite zugeführt werden. .The coolant can come from a line on the outlet side taken up and fed after recooling in the circuit of the inlet side will. .

Claims (1)

PATENTANSPRÜCHE: z. Elektrischer Widerstand mit Kühlkanälen, dadurch gekennzeichnet, daß die Kühlkanäle quer zur Längsrichtung des Widerstandskörpers, verlaufen. z. Widerstand nach Anspruch z, dadurch gekennzeichnet, d'aß die Kühlkanäle ungleich dicht über die Länge des Widerstandskörpers verteilt sind und an dessen stärker erwärmten Stellen dichter liegen. 3. Widerstand nach Anspruch r oder z, dadurch gekennzeichnet, daß die Kühlkanäle verschieden große Kühlflächen haben und an denn stärker erwärmten Stellen des Widerstandskörpers die Kühlkanäle mit größerer Kühlfläche liegen. ¢. Widerstand nach Anspruch i bis, 3, dadurch gekennzeichnet, däß die Geschwindigkeit desi Kühlmittels. oder die Kühlmittelmenge in den Kanälen ungleich groß und an den stärker erwärmten Stellen des Widerstandskörpers am: größten ist. 5. Widerstand, nach Anspruch r bis q., dadurch gekennzeichnet, daß die quer liegenden Kühlkanäle gruppenweise oder sämtlich parallel geschaltet sind. 6. Widerstand nach Anspruch r bis q., dadurch ,gekennzeichnet, das mehrere quer liegende einzelne Kühlkanäle im Kühlmittelstrom in Reihe geschaltet sind. PATENT CLAIMS: e.g. Electrical resistor with cooling channels, characterized in that the cooling channels run transversely to the longitudinal direction of the resistor body. z. Resistor according to Claim z, characterized in that the cooling channels are distributed unevenly densely over the length of the resistor body and are closer to its more strongly heated points. 3. Resistor according to claim r or z, characterized in that the cooling channels have cooling surfaces of different sizes and the cooling channels with a larger cooling surface are located on the more heated points of the resistor body. ¢. Resistor according to Claims 1 to 3, characterized in that the speed of the coolant. or the amount of coolant in the channels is unequal and is greatest at the more heated areas of the resistor body. 5. Resistor, according to claim r to q., Characterized in that the transverse cooling channels are connected in groups or all in parallel. 6. Resistor according to claim r to q., Characterized in that several transverse individual cooling channels are connected in series in the coolant flow.
DES35103D 1941-06-26 1941-06-26 Electrical resistance with cooling channels Expired DE945771C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES35103D DE945771C (en) 1941-06-26 1941-06-26 Electrical resistance with cooling channels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES35103D DE945771C (en) 1941-06-26 1941-06-26 Electrical resistance with cooling channels

Publications (1)

Publication Number Publication Date
DE945771C true DE945771C (en) 1956-07-19

Family

ID=7481779

Family Applications (1)

Application Number Title Priority Date Filing Date
DES35103D Expired DE945771C (en) 1941-06-26 1941-06-26 Electrical resistance with cooling channels

Country Status (1)

Country Link
DE (1) DE945771C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170046B (en) * 1960-10-11 1964-05-14 Licentia Gmbh Resistor stack consisting of voltage-dependent mass resistance disks for operation in the insulating and coolant of transformers
DE1216972B (en) * 1960-07-25 1966-05-18 Siemens Ag Electrical resistance for high pulse loads
DE2805427A1 (en) * 1977-02-21 1978-08-24 Philips Nv HEATING ELEMENT WITH A PTC RESISTOR BODY
EP2709115A1 (en) * 2012-09-13 2014-03-19 REO Inductive Components AG Electrical resistor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1216972B (en) * 1960-07-25 1966-05-18 Siemens Ag Electrical resistance for high pulse loads
DE1170046B (en) * 1960-10-11 1964-05-14 Licentia Gmbh Resistor stack consisting of voltage-dependent mass resistance disks for operation in the insulating and coolant of transformers
DE2805427A1 (en) * 1977-02-21 1978-08-24 Philips Nv HEATING ELEMENT WITH A PTC RESISTOR BODY
EP2709115A1 (en) * 2012-09-13 2014-03-19 REO Inductive Components AG Electrical resistor
DE102012108571B4 (en) * 2012-09-13 2017-04-27 Reo Inductive Components Ag Electrical resistance

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