FR2163852A5 - Electric resistance furnace - with precise and sensitive automatic temp control system - Google Patents

Electric resistance furnace - with precise and sensitive automatic temp control system

Info

Publication number
FR2163852A5
FR2163852A5 FR7143466A FR7143466A FR2163852A5 FR 2163852 A5 FR2163852 A5 FR 2163852A5 FR 7143466 A FR7143466 A FR 7143466A FR 7143466 A FR7143466 A FR 7143466A FR 2163852 A5 FR2163852 A5 FR 2163852A5
Authority
FR
France
Prior art keywords
furnace
control system
electric resistance
control
precise
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
FR7143466A
Other languages
French (fr)
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.)
Pechiney SA
Original Assignee
Pechiney SA
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 Pechiney SA filed Critical Pechiney SA
Priority to FR7143466A priority Critical patent/FR2163852A5/en
Application granted granted Critical
Publication of FR2163852A5 publication Critical patent/FR2163852A5/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • H05B1/0216—Switches actuated by the expansion of a solid element, e.g. wire or rod

Landscapes

  • Resistance Heating (AREA)
  • Furnace Details (AREA)

Abstract

Automatic temp. control system for electric resistance furnace of the type having its heating element on the outside of its furnace chamber, e.g. a muffle furnace comprising a silica tube with a "Nichrome" element wound on its outer wall. Essentially, the heating element is connected in series with a control wire of electrical resistance wire inside the furnace chamber, and thermal deflection of the control wire is used to operate the "on-off" switch of the element. The control brings the furnace rapidly up to set temp. without overshoot. Control is extremely precise and easily adjustable over a wide range of temperatures.
FR7143466A 1971-12-03 1971-12-03 Electric resistance furnace - with precise and sensitive automatic temp control system Expired FR2163852A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7143466A FR2163852A5 (en) 1971-12-03 1971-12-03 Electric resistance furnace - with precise and sensitive automatic temp control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7143466A FR2163852A5 (en) 1971-12-03 1971-12-03 Electric resistance furnace - with precise and sensitive automatic temp control system

Publications (1)

Publication Number Publication Date
FR2163852A5 true FR2163852A5 (en) 1973-07-27

Family

ID=9086884

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7143466A Expired FR2163852A5 (en) 1971-12-03 1971-12-03 Electric resistance furnace - with precise and sensitive automatic temp control system

Country Status (1)

Country Link
FR (1) FR2163852A5 (en)

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Legal Events

Date Code Title Description
TP Transmission of property
TP Transmission of property
ST Notification of lapse