US2677743A - Resistor mount with fluid circulation cooling - Google Patents

Resistor mount with fluid circulation cooling Download PDF

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Publication number
US2677743A
US2677743A US276628A US27662852A US2677743A US 2677743 A US2677743 A US 2677743A US 276628 A US276628 A US 276628A US 27662852 A US27662852 A US 27662852A US 2677743 A US2677743 A US 2677743A
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United States
Prior art keywords
resistor
fluid circulation
circulation cooling
support
cooling
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Expired - Lifetime
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US276628A
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English (en)
Inventor
Canegallo Giovanni
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S E C I ELETTROTECNICA CHIMICA ITALIANA Soc
SECI
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SECI
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Publication date
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Publication of US2677743A publication Critical patent/US2677743A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/08—Cooling, heating or ventilating arrangements
    • H01C1/082—Cooling, heating or ventilating arrangements using forced fluid flow

Definitions

  • resistors In order to handle high electric power values by means of resistors, resistors are usually cooled artificially so as to remove rapidly the heat developed and to allow thus for reducing their dimensions and weight.
  • This artificialcooling is obtained by circulating about the resistor, contained in suitable casings, a convenient fluid (air, water, an insulating liquid), which while flowing over the surface of the resistor absorbs the heat developed, transporting it speedily elsewhere and reducing thus the temperature of the resistor to a value ad missible for its preservation.
  • a convenient fluid air, water, an insulating liquid
  • the resistor (which may be of any type used in practice: wire, enamelled, layer, etc.) would be contacted by the cooling fluid flowing over the internal or external side or over both sides of the resistor, which generally is of cylindrical, prismatic or tubular shape; said movement of the fluid however takes place always in one sense only, from one end to the other of the resistor.
  • one of the supports may be insulated or grounded
  • the second one has to be insulated in respect to the first one for a voltage that may be very high, and this second support may introduce into the high frequency circuits obnoxious losses and capacities.
  • FIGS. 1 and 2 represent in axial section and in cross section respectively one form of embodiment with a tubular resistor and Figures 3 and Ll represent in analogous sections respectively a second example of embodiment with a solid prismatic resistor.
  • the resistor comprises a metallic body with a base I shaped as a bowl open at top and having an external threading i; while at bottom it contracts at 3 in the shape of a corrugated pipe for connection with a rubber hose.
  • a pipe 4 arranged radially and which too may be for connection with a rubber hose.
  • a tubular resistor I@ is xed to the tubular support 5, which constitutes thus the base thereof.
  • an insulating sheath II which may be of glass or porcelain or other insulating material, and which has a bottom flange allowing for tightening it against the body I by means of the threaded ring I2 to be screwed on the threaded portion 2.
  • the sheath II is shaped at its upper end as a semi-sphere with a bore through which there penetrates a through-bolt connected internally to the resistor lil by means of a small rod I4 and a perforated plate I5; the bolt I3 projects from the sheath II to receive a threaded nut IB adapted to serve as a current terminal.
  • the outside of the body l is shaped in such a manner that it can receive a ring IT, by means of which it can be fixed with screws to a supporting frame, directly or with the intermediary of supporting insulator, according to whether it has to be grounded or insulated.
  • FIGs 3 and 4 A variant of this structure is illustrated in Figures 3 and 4, wherein the prismatic resistor l0 and the support l5 have solid rectangular cross section.
  • the sheath Il adheres to the two smaller faces of the resistor and the cooling iiuid iiows over one of the larger faces of the resistor in one sense and over the other face in the opposed sense as diagrammatically indicated in Figures 3 and 4, wherein the other reference numerals indicate equivalent parts of Figures 1 and 2.
  • the cooling iluid outlet is through a pipe 4' co axial with pipe 4.
  • the single-support mount can allow for placing the assembly in any position, since a vertical position of the resistor is not necessary for the satisfactory operation of the fluid circulation.
  • a fluid cooled resistor assembly comprising a closed jacket composed of two sections, one of said sections being tubularly shaped and closed on one end, the other section being generally bowl-shaped, the said two sections being joined at their open ends to form said closed jacket and said bowl-shaped section including inlet opening and an outlet opening for a cooling fluid, a resistor element longitudinally mounted within said jacket, one end of the resistor element being fastened iluid tight to the jacket end having said openings, the other end of the resistor element terminating short of the opposite end of the jacket, the said resistor element being disposed in a spacial relationship with the jacket such that a continuous fluid circulation channel is formed extending from the inlet along one outer face of the resistor element, over said other end of the resistor element and along another face -of the resistor element to the outlet.
  • a resistor assembly according to claim l wherein a terminal extends from each end of the resistor through the respective end of the jacket.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Resistors (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
US276628A 1951-03-17 1952-03-14 Resistor mount with fluid circulation cooling Expired - Lifetime US2677743A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT692688X 1951-03-17

Publications (1)

Publication Number Publication Date
US2677743A true US2677743A (en) 1954-05-04

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ID=31898484

Family Applications (1)

Application Number Title Priority Date Filing Date
US276628A Expired - Lifetime US2677743A (en) 1951-03-17 1952-03-14 Resistor mount with fluid circulation cooling

Country Status (2)

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US (1) US2677743A (enrdf_load_stackoverflow)
GB (1) GB692688A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192305A (en) * 1961-09-18 1965-06-29 William W Erbe Fluid cooling of electrical conductors
DE1197164B (de) * 1960-09-23 1965-07-22 Asea Ab Anordnung von oelgekuehlten Leistungs-widerstaenden
US3213392A (en) * 1962-03-08 1965-10-19 Philco Corp Coaxial transmission line termination employing tubular resistor cooled by internal and external annular water films
US3858146A (en) * 1973-06-04 1974-12-31 B Simonsen Electrical discharge resistor
EP0247635A3 (de) * 1986-05-30 1988-11-09 Tecnomasio Italiano Brown Boveri S.p.A. Verzehrwiderstand mit Zwangsluftkühlung für elektronische Umrichter, besonders für eine elektrische Antriebsvorrichtung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1289903B (de) * 1962-05-08 1969-02-27 Siemens Ag Vorrichtung zur Kuehlung von Belastungswiderstaenden in Hochfrequenzsendern od. dgl.nach dem Verfahren der Siedekuehlung
GB2546260A (en) * 2016-01-12 2017-07-19 General Electric Technology Gmbh Improvements in or relating to resistors
EP4185072A1 (en) 2021-11-17 2023-05-24 Volvo Truck Corporation An air cooled resistor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2254838A (en) * 1938-09-08 1941-09-02 Rca Corp Resistor
US2274381A (en) * 1941-07-16 1942-02-24 Gen Electric Liquid cooled resistor
US2412462A (en) * 1944-04-05 1946-12-10 Int Resistance Co Resistor construction
US2491876A (en) * 1947-03-06 1949-12-20 Int Resistance Co Fluid cooled resistor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2254838A (en) * 1938-09-08 1941-09-02 Rca Corp Resistor
US2274381A (en) * 1941-07-16 1942-02-24 Gen Electric Liquid cooled resistor
US2412462A (en) * 1944-04-05 1946-12-10 Int Resistance Co Resistor construction
US2491876A (en) * 1947-03-06 1949-12-20 Int Resistance Co Fluid cooled resistor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1197164B (de) * 1960-09-23 1965-07-22 Asea Ab Anordnung von oelgekuehlten Leistungs-widerstaenden
US3192305A (en) * 1961-09-18 1965-06-29 William W Erbe Fluid cooling of electrical conductors
US3213392A (en) * 1962-03-08 1965-10-19 Philco Corp Coaxial transmission line termination employing tubular resistor cooled by internal and external annular water films
US3858146A (en) * 1973-06-04 1974-12-31 B Simonsen Electrical discharge resistor
EP0247635A3 (de) * 1986-05-30 1988-11-09 Tecnomasio Italiano Brown Boveri S.p.A. Verzehrwiderstand mit Zwangsluftkühlung für elektronische Umrichter, besonders für eine elektrische Antriebsvorrichtung

Also Published As

Publication number Publication date
GB692688A (enrdf_load_stackoverflow) 1953-06-10

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