EP0040651A1 - Container for the evacuation of heat losses - Google Patents

Container for the evacuation of heat losses Download PDF

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Publication number
EP0040651A1
EP0040651A1 EP80200485A EP80200485A EP0040651A1 EP 0040651 A1 EP0040651 A1 EP 0040651A1 EP 80200485 A EP80200485 A EP 80200485A EP 80200485 A EP80200485 A EP 80200485A EP 0040651 A1 EP0040651 A1 EP 0040651A1
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EP
European Patent Office
Prior art keywords
container
cooling
air duct
duct wall
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.)
Withdrawn
Application number
EP80200485A
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German (de)
French (fr)
Inventor
Paul Schneider
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.)
BBC Brown Boveri AG Switzerland
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BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Priority to EP80200485A priority Critical patent/EP0040651A1/en
Publication of EP0040651A1 publication Critical patent/EP0040651A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/06—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/025—Constructional details relating to cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating

Definitions

  • the present invention relates to a container according to the preamble of claim 1.
  • a solution is known in which a heat source is installed in a container.
  • the heat generated is transported to the tank wall by a cooling liquid and released into the air by heat conduction via cooling fins attached to the outside of the tank wall.
  • the cooling air can circulate naturally or be transported by means of a fan.
  • the container can be provided with an air duct wall, so that the heated cooling air is guided with this wall.
  • outer cooling tubes which are connected directly to the container and which can additionally be provided with cooling fins and in which a cooling liquid circulates. This circulation of the coolant can also occur as a result of Differences in gravity or by means of a pump. Heat can also be given off to the air by natural or forced air movement. With all variants, additional fittings and devices for monitoring temperature, pressure, etc. are required.
  • the invention specified in claim 1 is based on the object of designing a container in accordance with the preamble of claim 1 in such a way that heat losses can be dissipated easily and economically and that no additional fittings and monitoring devices are required.
  • the advantage of the invention is in particular that the additional channels accelerate the heat exchange, the construction remaining very simple.
  • the cooling tubes according to claim 2 show a simple embodiment of the channels and can also serve as part of the supporting structure.
  • the embodiment according to claim 3 contains advantageous variants of the mutual connection of the channels, wherein the solution used in practice can be adapted to the type of container.
  • the development according to claim 4 enables quick assembly and disassembly of the outer parts of the container.
  • An expedient further development is described in claim 5.
  • the segments again facilitate assembly and disassembly and enable partial replacement if a segment is damaged.
  • the embodiment according to claim 6 is particularly suitable for segments which consist, for example, of aluminum and are extruded. Has the same advantage also the solution according to claim 7. Claim 8 then contains further simplification, because in this solution the number of connection points is reduced.
  • the solution according to claim 8 can also use the division of the container into segments.
  • the embodiment according to claim 9 shows a particularly favorable embodiment of the entire container or its segments, the cooling being further improved.
  • the cooling liquid is used in a single radius.
  • a cylindrical container wall 1 consists of segments 11 which are welded together. Inside the container wall 1 is a cooled space 2, in which the cooling liquid and the device or apparatus to be cooled located. Cooling fins 3 are welded onto the outer surface of the container wall 1.
  • An air duct wall 5 is also cylindrical. It also consists of segments 11 and is made in one piece with cooling tubes 8, in which there are channels 7 for the cooling liquid.
  • the connections between the segments are made with weld seams 4.
  • the cooling tubes 8 are provided with cooling fins 9, which are either provided directly with the cooling fins 9 or the connection to other cooling fins 9 is indirect via the air guide wall 5. Some of the cooling fins 3 are welded together with the cooling fins 9.
  • Some cooling tubes 8 are shown in FIG. In this example, 5 tubes each form a unit, are mutually connected with connecting parts 10 and are connected to the supply 12 and the discharge 13 of the cooling liquid.
  • FIG. 3 A further exemplary embodiment is shown in FIG. 3.
  • the reference numerals from FIGS. 1 and 2 also apply to FIG. 3.
  • the cooling fins are designed as continuous cooling fins 14 which are made in one piece with the cooling tubes 8.
  • a further outer air duct wall 15 is provided, which further improves the cooling.
  • the mode of operation of the subject matter of the invention is particularly clearly visible in FIG. 2.
  • the cooling liquid flows through the cooling tubes 8.
  • the cooling fins 9 and the air duct wall 5 are also intensively cooled, which of course has a favorable effect on the heat exchange in the space between the container wall 1 and the air duct wall 5 and 15.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

A container (1) for the evacuation of heat losses from electrical equipment and apparatuses immersed in a cooling fluid is provided with cooling ribs (3). Outside these cooling ribs (3), an air ducting wall (5) is arranged which is connected to cooling tubes (8). These cooling tubes (8) are flowed through by the cooling fluid and are likewise provided with cooling ribs (9). The advantage of this embodiment is based on its very simple construction and economical heat exchange. The container is particularly suitable for cooling semiconductor rectifiers, transformers, chokes and resistors. <IMAGE>

Description

Die vorliegende Erfindung betrifft einen Behälter gemäss dem Oberbegriff des Anspruchs l.The present invention relates to a container according to the preamble of claim 1.

Für die Abfuhr von Wärmeverlusten in Kühlflüssigkeit eingetauchter elektrischer Geräte und Apparate, wie z.B. Transformatoren, Drosseln, Widerstände, Halbleiterstromrichter, sind verschiedene Möglichkeiten bekannt.For the dissipation of heat losses in cooling liquid immersed in electrical devices and apparatus, e.g. Transformers, chokes, resistors, semiconductor converters, various possibilities are known.

Es ist eine Lösung bekannt, bei der eine Wärmequelle in einem Behälter eingebaut ist. Die erzeugte Wärme wird durch eine Kühlflüssigkeit zur Behälterwand transportiert und durch Wärmeleitung über aussen an der Behälterwand angebrachte Kühlrippen an die Luft abgegeben. Die Kühlluft kann dabei auf natürliche Art zirkulieren oder mittels Ventilator transportiert werden. Der Behälter kann mit einer Luftführungswand versehen werden, so dass die erwärmte Kühlluft mit dieser Wand geführt wird. Eine andere Möglichkeit besteht in einer Verwendung von direkt mit dem Behälter verbundenen äusseren Kühlrohren, welche zusätzlich mit Kühlrippen versehen sein können und in welchen eine Kühlflüssigkeit zirkuliert. Auch diese Zirkulation der Kühlflüssigkeit kann entweder in Folge von Schwerkraftsunterschieden oder mittels einer Pumpe realisiert werden. Ebenfalls die Wärmeabgaben an die Luft können durch natürliche oder gezwungene Luftbewegung erfolgen. Bei allen Varianten werden zusätzliche Armaturen und Geräte zur Ueberwachung von Temperatur, Druck, usw. benötigt.A solution is known in which a heat source is installed in a container. The heat generated is transported to the tank wall by a cooling liquid and released into the air by heat conduction via cooling fins attached to the outside of the tank wall. The cooling air can circulate naturally or be transported by means of a fan. The container can be provided with an air duct wall, so that the heated cooling air is guided with this wall. Another possibility is to use outer cooling tubes which are connected directly to the container and which can additionally be provided with cooling fins and in which a cooling liquid circulates. This circulation of the coolant can also occur as a result of Differences in gravity or by means of a pump. Heat can also be given off to the air by natural or forced air movement. With all variants, additional fittings and devices for monitoring temperature, pressure, etc. are required.

Der im Anspruch 1 angegebenen Erfindung liegt die Aufgabe zugrunde, einen Behälter gemäss dem Oberbegriff des Anspruchs 1 so auszubilden, dass die Abfuhr von Wärmeverlusten mit einfachen Mitteln und wirtschaftlich erfolgt und dass keine zusätzlichen Armaturen und.Ueberwachungs- geräte erforderlich sind.The invention specified in claim 1 is based on the object of designing a container in accordance with the preamble of claim 1 in such a way that heat losses can be dissipated easily and economically and that no additional fittings and monitoring devices are required.

Der Vorteil der Erfindung liegt insbesondere darin, dass die zusätzlichen Kanäle den Wärmeaustausch beschleunigen, wobei die Konstruktion sehr einfach bleibt.The advantage of the invention is in particular that the additional channels accelerate the heat exchange, the construction remaining very simple.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben. Die Kühlrohre nach Anspruch 2 zeigen eine einfache Ausführungsform der Kanäle und können auch als ein Teil der Tragkonstruktion dienen. Die Ausführungsform gemäss dem Anspruch 3 enthält vorteilhafte Varianten der gegenseitigen Verbindung der Kanäle, wobei die praktisch verwendete Lösung der Art des Behälters angepasst werden kann. Die Weiterbildung nach Anspruch 4 ermöglicht eine schnelle Montage bzw. Demontage der äusseren Teile des Behälters. Im Anspruch 5-ist eine zweckmässige Weiterbildung beschrieben. Die Segmente erleich'- tern wieder die Montage und die Demontage und ermöglichen ein teilweises Ersetzen bei einer Beschädigung eines Segmentes. Die Ausführungsform nach Anspruch 6 ist insbesondere für Segmente geeignet, die z.B. aus Aluminium bestehen und stranggepresst sind. Denselben Vorteil weist auch die Lösung nach dem Anspruch 7 auf. Weitere Vereinfachung enthält dann der Anspruch 8, weil bei dieser Lösung die Anzahl der Verbindungsstellen vermindert wird. Es ist selbstverständlich, dass auch die Lösung gemäss dem Anspruch 8 die Teilung des Behälters in Segmente verwenden kann. Die Ausführungsform gemäss dem Anspruch 9 zeigt dann eine besonders günstige Ausführungsform des ganzen Behälters bzw. dessen Segmente, wobei die Kühlung weiter verbessert wird. Gemäss Anspruch 10 wird die Kühlflüssigkeit in einem einzigen Umkreis ausgenützt.Advantageous developments of the invention are described in the subclaims. The cooling tubes according to claim 2 show a simple embodiment of the channels and can also serve as part of the supporting structure. The embodiment according to claim 3 contains advantageous variants of the mutual connection of the channels, wherein the solution used in practice can be adapted to the type of container. The development according to claim 4 enables quick assembly and disassembly of the outer parts of the container. An expedient further development is described in claim 5. The segments again facilitate assembly and disassembly and enable partial replacement if a segment is damaged. The embodiment according to claim 6 is particularly suitable for segments which consist, for example, of aluminum and are extruded. Has the same advantage also the solution according to claim 7. Claim 8 then contains further simplification, because in this solution the number of connection points is reduced. It goes without saying that the solution according to claim 8 can also use the division of the container into segments. The embodiment according to claim 9 then shows a particularly favorable embodiment of the entire container or its segments, the cooling being further improved. According to claim 10, the cooling liquid is used in a single radius.

Die Erfindung wird im folgenden anhand schematischer Zeichnungen näher erläutert.The invention is explained in more detail below with the aid of schematic drawings.

Es zeigt:

  • Fig. 1 einen Teilschnitt durch eine beispielsweise Ausführungsform des Behälters, wobei die Behälterwand und die Luftführungswand getrennt hergestellt worden sind und erst zusätzlich zusammengeschweisst,
  • Fig. 2 eine Abwicklung, in der schematisch die Kühlrohre mit der Zufuhr und Abfuhr der Kühlflüssigkeit dargestellt sind, und
  • Fig. 3 eine weitere beispielsweise Ausführungsform des Erfindungsgegenstandes mit durchgehenden Kühlrippen und einer weiteren äusseren Luftführungswand.
It shows:
  • 1 shows a partial section through an example embodiment of the container, the container wall and the air duct wall having been produced separately and only additionally welded together,
  • Fig. 2 is a development in which the cooling pipes with the supply and discharge of the cooling liquid are shown schematically, and
  • Fig. 3 shows another example embodiment of the subject matter of the invention with continuous cooling fins and a further outer air duct wall.

Gemäss Fig. 1 besteht eine zylindrische Behälterwand 1 aus Segmenten 11, die zusammengeschweisst sind. Im Inneren der Behälterwand 1 ist ein gekühlter Raum 2, in dem sich die Kühlflüssigkeit und das zu kühlende Gerät bzw. Apparat befindet. An der äusseren Oberfläche der Behälterwand 1 sind Kühlrippen 3 angeschweisst. Eine Luftführungswand 5 ist ebenfalls zylindrisch ausgebildet. Sie besteht auch aus Segmenten 11 und ist einstückig mit Kühlrohren 8 hergestellt, in welchen sich Kanäle 7 für die Kühlflüssigkeit befinden.1, a cylindrical container wall 1 consists of segments 11 which are welded together. Inside the container wall 1 is a cooled space 2, in which the cooling liquid and the device or apparatus to be cooled located. Cooling fins 3 are welded onto the outer surface of the container wall 1. An air duct wall 5 is also cylindrical. It also consists of segments 11 and is made in one piece with cooling tubes 8, in which there are channels 7 for the cooling liquid.

Die Verbindungen zwischen den Segmenten sind mit Schweissnähten 4 durchgeführt. Die Kühlrohre 8 sind mit Kühlrippen 9 versehen, die entweder direkt mit den Kühlrippen 9 versehen sind oder die Verbindung mit anderen Kühlrippen 9 geht indirekt über die Luftführungswand 5. Einige der Kühlrippen 3 sind mit den Kühlrippen 9 zusammengeschweisst.The connections between the segments are made with weld seams 4. The cooling tubes 8 are provided with cooling fins 9, which are either provided directly with the cooling fins 9 or the connection to other cooling fins 9 is indirect via the air guide wall 5. Some of the cooling fins 3 are welded together with the cooling fins 9.

In der Fig.'2 sind einige Kühlrohre 8 dargestellt. In diesem Beispiel bilden je 5 Rohre eine Einheit, sind mit Verbindungsteilen 10 gegenseitig angeschlossen und mit der Zufuhr 12 und der Abfuhr 13 der Kühlflüssigkeit verbunden.Some cooling tubes 8 are shown in FIG. In this example, 5 tubes each form a unit, are mutually connected with connecting parts 10 and are connected to the supply 12 and the discharge 13 of the cooling liquid.

In Fig. 3 ist eine weitere beispielsweise Ausführungsform gezeigt. Die Bezugsziffern aus Fig. 1 und 2 gelten auch für die Fig. 3. In der Fig. 3 sind die Kühlrippen als durchgehende Kühlrippen 14 ausgebildet, die einstückig mit den Kühlrohren 8 ausgeführt sind. Es ist eine weitere äussere Luftführungswand 15 vorgesehen, die die Kühlung weiter verbessert.A further exemplary embodiment is shown in FIG. 3. The reference numerals from FIGS. 1 and 2 also apply to FIG. 3. In FIG. 3, the cooling fins are designed as continuous cooling fins 14 which are made in one piece with the cooling tubes 8. A further outer air duct wall 15 is provided, which further improves the cooling.

Die Funktionsweise des Erfindungsgegenstandes ist insbesondere in der Fig. 2 gut sichtbar. Die Kühlflüssigkeit strömt durch die Kühlrohre 8. Somit werden auch die Kühlrippen 9 und die.Luftführungswand 5 intensiv gekühlt, was sich selbstverständlich günstig auf den Wärmeaustausch in dem Raum zwischen der Behälterwand 1 und der Luftführungswand 5 bzw. 15 auswirkt.The mode of operation of the subject matter of the invention is particularly clearly visible in FIG. 2. The cooling liquid flows through the cooling tubes 8. Thus, the cooling fins 9 and the air duct wall 5 are also intensively cooled, which of course has a favorable effect on the heat exchange in the space between the container wall 1 and the air duct wall 5 and 15.

Der Erfindungsgegenstand ist auf das in der Zeichnung Dargestellte selbstverständlich nicht beschränkt. Man kann andere Formen der Behälter, der Kühlrippen und der Kühlkanäle verwenden. Anstelle der Schweissverbindungen kann man auch andere an sich bekannte Arten von Verbindungen verwenden.The subject of the invention is of course not limited to what is shown in the drawing. Other forms of containers, cooling fins and cooling channels can be used. Instead of the welded connections, other types of connections known per se can also be used.

B e z e i c h n u n g s l i s t eB e z e i c h n u n g s l i s t e

  • 1 = Behälter1 = container
  • 2 = gekühlter Raum2 = cooled room
  • 3 = Kühlrippen der Behälterwand 13 = cooling fins of the tank wall 1
  • 4 = Schweissnähte4 = weld seams
  • 5 = Luftführungswand5 = air duct wall
  • 6 = abdeckende Verbindungsteile6 = covering connecting parts
  • 7 = Kanäle für die Kühlflüssigkeit7 = channels for the coolant
  • 8 = Kühlrohre8 = cooling pipes
  • 9 = Kühlrippen der Kanäle.79 = cooling fins of the channels. 7
  • 10 = Verbindungsteile der Kanäle 710 = connecting parts of channels 7
  • 11 = Segmente11 = segments
  • 12 = Zufuhr der Kühlflüssigkeit12 = supply of coolant
  • 13 = Abfuhr der Kühlflüssigkeit13 = removal of the coolant
  • 14 = durchgehende Kühlrippen14 = continuous cooling fins
  • 15 = äussere Luftführungswand15 = outer air duct wall

Claims (10)

1. Behälter für die Abfuhr von Wärmeverlusten von in einer Kühlflüssigkeit eingetauchten elektrischen Geräten und Apparaten, wie z.B. Transformator, Drossel, Widerstand, Halbleiterstromrichter, wobei der Behälter an der äusseren Oberfläche wenigstens teilweise mit Kühlrippen zwecks Wärmeabfuhr durch Luft versehen ist, welche durch eine Luftführungswand umgeben sind, dadurch gekennzeichnet, dass die Luftführungswand (5) mit Kanälen (7) zur Führung der Kühlflüssigkeit versehen ist.1.Container for the dissipation of heat losses from electrical devices and apparatus immersed in a cooling liquid, e.g. Transformer, choke, resistor, semiconductor converter, wherein the container is at least partially provided on the outer surface with cooling fins for heat dissipation by air, which are surrounded by an air duct wall, characterized in that the air duct wall (5) with channels (7) for guiding the Coolant is provided. 2. Behälter nach Anspruch 1, dadurch gekennzeichnet, dass die Kanäle (7) durch Kühlrohre (8) gebildet sind.2. Container according to claim 1, characterized in that the channels (7) are formed by cooling tubes (8). 3. Behälter nach Anspruch 1, dadurch gekennzeichnet, dass die Kanäle (7) in Serie und/oder parallelgeschaltet sind.3. Container according to claim 1, characterized in that the channels (7) are connected in series and / or in parallel. 4. Behälter nach Anspruch 1, dadurch gekennzeichnet, dass die Kanäle (7) mit Kühlrippen (9) versehen sind, die sich im Raum zwischen der Behälterwand (1) und der Luftführungswand (5) erstrecken.4. A container according to claim 1, characterized in that the channels (7) are provided with cooling fins (9) which extend in the space between the container wall (1) and the air duct wall (5). 5. Behälter nach Anspruch 1, dadurch gekennzeichnet, dass der Behälter (1) und/oder die Luftführungswand (5) aus Segmenten (11) bestehen.5. A container according to claim 1, characterized in that the container (1) and / or the air duct wall (5) consist of segments (11). 6. Behälter nach Anspruch 5, dadurch gekennzeichnet, dass die Segmente (11) zusätzlich mit den Teilen der Luftführungswand (5) verbunden sind.6. Container according to claim 5, characterized in that the segments (11) are additionally connected to the parts of the air duct wall (5). 7. Behälter nach Anspruch 6, dadurch gekennzeichnet, dass die Segmente (11) zusätzlich Kanäle (7) für die Kühlflüssigkeit enthalten.7. Container according to claim 6, characterized in that the segments (11) additionally contain channels (7) for the cooling liquid. 8. Behälter nach Anspruch 1, dadurch gekennzeichnet, dass wenigstens einige der Kühlrippen (3) der Behälterwand (1) mit wenigstens einigen Kühlrippen (9) der Kanäle (7) verbunden sind.8. A container according to claim 1, characterized in that at least some of the cooling fins (3) of the container wall (1) are connected to at least some cooling fins (9) of the channels (7). 9. Behälter nach Anspruch 1, dadurch gekennzeichnet, dass die Luftführungswand (5) mit einer weiteren äusseren Luftführungswand (15) umgeben ist und dass auch zwischen der Luftführungswand (5) und der äusseren Luftführungswand (15) Kühlrippen (14) vorhanden sind.9. A container according to claim 1, characterized in that the air duct wall (5) is surrounded by a further outer air duct wall (15) and that cooling fins (14) are also present between the air duct wall (5) and the outer air duct wall (15). 10. Behälter nach Anspruch 1, dadurch gekennzeichnet, dass der gekühlte Raum (2) des Behälters (1) mit den Kanälen (7) für die Kühlflüssigkeit verbunden ist.10. A container according to claim 1, characterized in that the cooled space (2) of the container (1) with the channels (7) for the cooling liquid is connected.
EP80200485A 1980-05-23 1980-05-23 Container for the evacuation of heat losses Withdrawn EP0040651A1 (en)

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EP80200485A EP0040651A1 (en) 1980-05-23 1980-05-23 Container for the evacuation of heat losses

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Cited By (6)

* Cited by examiner, † Cited by third party
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EP0790688A1 (en) * 1996-02-14 1997-08-20 Alcatel Sheltering device for active and passive connection components of telecommunication equipment
WO1998013838A2 (en) * 1996-09-26 1998-04-02 Gec Alsthom Limited Power equipment for use underwater
EP1391400A1 (en) * 2002-08-23 2004-02-25 G James Extrusion Co. Pty Ltd Enclosure, in particular for refuse bins
AU2003234999B2 (en) * 2002-08-23 2009-01-08 G James Extrusion Co Pty Ltd An Enclosure
WO2016210018A1 (en) * 2015-06-26 2016-12-29 Microsoft Technology Licensing, Llc Underwater container cooling via integrated heat exchanger
US9844167B2 (en) 2015-06-26 2017-12-12 Microsoft Technology Licensing, Llc Underwater container cooling via external heat exchanger

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FR626441A (en) * 1926-03-26 1927-09-06 Cooling device for liquid containers, particularly applicable to transformers
CH198130A (en) * 1937-08-24 1938-06-15 Karl Sudheimer Heating jacket for agitator kettles, stills and similar containers.
DE671286C (en) * 1937-06-05 1939-02-03 Aeg Cooling vessel for transformers, especially large power
DE683373C (en) * 1937-07-13 1939-11-04 Fried Krupp Akt Ges Heat exchangers, especially for high-tension gases and liquids
DE909121C (en) * 1950-01-10 1954-04-15 Gerhard Apelt Dipl Ing Dry transformer in a pressure-proof housing
DE909122C (en) * 1950-03-07 1954-04-15 Gerhard Apelt Dipl Ing Dry type transformer
DE1163864B (en) * 1962-08-23 1964-02-27 Basf Ag Heat exchanger that consists of a container and a jacket surrounding the container
GB1175754A (en) * 1967-02-15 1969-12-23 Gessner Kg E Container for Liquids to be Heated or to be Cooled
DE1910824A1 (en) * 1969-03-04 1970-09-10 Heinrich Rosen Cooling ducts for double-walled vessels - of agitator
DE2246636A1 (en) * 1972-09-22 1974-03-28 Transformatoren Union Ag DEEPWAVE BOILER FOR TRANSFORMERS, REACTOR COILS AND THE LIKE
DE2739631A1 (en) * 1977-09-02 1979-03-08 Siemens Ag PRESSURE-RESISTANT ENCLOSED DRY TRANSFORMER

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR626441A (en) * 1926-03-26 1927-09-06 Cooling device for liquid containers, particularly applicable to transformers
DE671286C (en) * 1937-06-05 1939-02-03 Aeg Cooling vessel for transformers, especially large power
DE683373C (en) * 1937-07-13 1939-11-04 Fried Krupp Akt Ges Heat exchangers, especially for high-tension gases and liquids
CH198130A (en) * 1937-08-24 1938-06-15 Karl Sudheimer Heating jacket for agitator kettles, stills and similar containers.
DE909121C (en) * 1950-01-10 1954-04-15 Gerhard Apelt Dipl Ing Dry transformer in a pressure-proof housing
DE909122C (en) * 1950-03-07 1954-04-15 Gerhard Apelt Dipl Ing Dry type transformer
DE1163864B (en) * 1962-08-23 1964-02-27 Basf Ag Heat exchanger that consists of a container and a jacket surrounding the container
GB1175754A (en) * 1967-02-15 1969-12-23 Gessner Kg E Container for Liquids to be Heated or to be Cooled
DE1910824A1 (en) * 1969-03-04 1970-09-10 Heinrich Rosen Cooling ducts for double-walled vessels - of agitator
DE2246636A1 (en) * 1972-09-22 1974-03-28 Transformatoren Union Ag DEEPWAVE BOILER FOR TRANSFORMERS, REACTOR COILS AND THE LIKE
DE2739631A1 (en) * 1977-09-02 1979-03-08 Siemens Ag PRESSURE-RESISTANT ENCLOSED DRY TRANSFORMER

Cited By (11)

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