FR2311352A2 - Electrical furnace temperature regulation - involves control system amplifying correction of demanded temperature value - Google Patents

Electrical furnace temperature regulation - involves control system amplifying correction of demanded temperature value

Info

Publication number
FR2311352A2
FR2311352A2 FR7515568A FR7515568A FR2311352A2 FR 2311352 A2 FR2311352 A2 FR 2311352A2 FR 7515568 A FR7515568 A FR 7515568A FR 7515568 A FR7515568 A FR 7515568A FR 2311352 A2 FR2311352 A2 FR 2311352A2
Authority
FR
France
Prior art keywords
difference
demanded
value
temperature
control system
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.)
Granted
Application number
FR7515568A
Other languages
French (fr)
Other versions
FR2311352B2 (en
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.)
Piezo Ceram Electronique
Original Assignee
Piezo Ceram Electronique
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 Piezo Ceram Electronique filed Critical Piezo Ceram Electronique
Priority to FR7515568A priority Critical patent/FR2311352A2/en
Publication of FR2311352A2 publication Critical patent/FR2311352A2/en
Application granted granted Critical
Publication of FR2311352B2 publication Critical patent/FR2311352B2/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
    • G05D23/1928—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperature of one space

Abstract

An electrically heated furnace has a system to control the difference between the demanded temperatures and that of the load. The difference is decreased by using a multiplication factor on the temperature difference. Amplificaton of correction of the demanded value is obtained permitting rapid establishment of process temperature. A temperature sensor senses the temperature of heating elements. A comparator compares this value with the demanded value to produce a proportioned difference signal. A second sensor close to the load senses the temperature near the load and a difference circuit produces the difference between this value and the demanded value. An amplifier multiples this difference by a coefficient. A summing circuit adds the comparator output to the amplifier output to control the heating elements.
FR7515568A 1975-05-13 1975-05-13 Electrical furnace temperature regulation - involves control system amplifying correction of demanded temperature value Granted FR2311352A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7515568A FR2311352A2 (en) 1975-05-13 1975-05-13 Electrical furnace temperature regulation - involves control system amplifying correction of demanded temperature value

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7515568A FR2311352A2 (en) 1975-05-13 1975-05-13 Electrical furnace temperature regulation - involves control system amplifying correction of demanded temperature value

Publications (2)

Publication Number Publication Date
FR2311352A2 true FR2311352A2 (en) 1976-12-10
FR2311352B2 FR2311352B2 (en) 1978-03-17

Family

ID=9155413

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7515568A Granted FR2311352A2 (en) 1975-05-13 1975-05-13 Electrical furnace temperature regulation - involves control system amplifying correction of demanded temperature value

Country Status (1)

Country Link
FR (1) FR2311352A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552628A1 (en) * 1983-09-30 1985-04-05 Chantemerle Gilles Method for the controlled cooking of any foodstuff, in particular ham, and corresponding regulating cabinet
EP0187629A2 (en) * 1985-01-09 1986-07-16 Aktiebolaget Electrolux A method of controlling the heating of an aqueous load in a cooking utensil
EP0203293A1 (en) * 1985-03-29 1986-12-03 Wella Aktiengesellschaft Control circuit for an electric sauna

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385921A (en) * 1967-06-21 1968-05-28 Electroglas Inc Diffusion furnace with high speed recovery
US3625421A (en) * 1970-04-17 1971-12-07 Leeds & Northrup Co System for controlling furnace temperatures without overshoot

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385921A (en) * 1967-06-21 1968-05-28 Electroglas Inc Diffusion furnace with high speed recovery
US3625421A (en) * 1970-04-17 1971-12-07 Leeds & Northrup Co System for controlling furnace temperatures without overshoot

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552628A1 (en) * 1983-09-30 1985-04-05 Chantemerle Gilles Method for the controlled cooking of any foodstuff, in particular ham, and corresponding regulating cabinet
EP0187629A2 (en) * 1985-01-09 1986-07-16 Aktiebolaget Electrolux A method of controlling the heating of an aqueous load in a cooking utensil
EP0187629A3 (en) * 1985-01-09 1986-11-05 Aktiebolaget Electrolux A method of controlling the heating of an aqueous load in a cooking utensil
EP0203293A1 (en) * 1985-03-29 1986-12-03 Wella Aktiengesellschaft Control circuit for an electric sauna

Also Published As

Publication number Publication date
FR2311352B2 (en) 1978-03-17

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