GB669351A - Improvements in, or relating to, convection furnaces - Google Patents

Improvements in, or relating to, convection furnaces

Info

Publication number
GB669351A
GB669351A GB1113049A GB1113049A GB669351A GB 669351 A GB669351 A GB 669351A GB 1113049 A GB1113049 A GB 1113049A GB 1113049 A GB1113049 A GB 1113049A GB 669351 A GB669351 A GB 669351A
Authority
GB
United Kingdom
Prior art keywords
thermocouple
atmosphere gas
groups
disposed
fan
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
GB1113049A
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.)
Birlec Ltd
Original Assignee
Birlec Ltd
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 Birlec Ltd filed Critical Birlec Ltd
Priority to GB1113049A priority Critical patent/GB669351A/en
Publication of GB669351A publication Critical patent/GB669351A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/02—Ohmic resistance heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)

Abstract

669,351. Heat-treatment furnaces. BIRLEC, Ltd., and HARRIS, J. July 27, 1950 [April 27, 1949], No. 11130/49. Class 51 (ii). In a convection furnace wherein the work undergoing treatment is heated by forced circulation of the furnace atmosphere gas through a closed system which includes the heat treatment chamber and a separate heating chamber where the atmosphere gas is heated, the load 4 is disposed within a tubular heat treatment chamber 1 which is surrounded by a heating chamber 2 containing successive groups of resistors 5 and 6 having a main thermocouple 7 disposed therebetween and the atmosphere gas is circulated by a fan 3, a second thermocouple 8 being disposed in the outlet from the fan. The main thermocouple 7 is adapted to control the power input to the resistor groups 5 and 6 so that the gas issuing from the group 5 is raised to a predetermined temperature and the increment of temperature increase is the same at both groups. The thermocouple 8 is adapted to control the power input to either or both resistor groups so that the atmosphere gas temperature does not exceed a given maximum.
GB1113049A 1949-04-27 1949-04-27 Improvements in, or relating to, convection furnaces Expired GB669351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1113049A GB669351A (en) 1949-04-27 1949-04-27 Improvements in, or relating to, convection furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1113049A GB669351A (en) 1949-04-27 1949-04-27 Improvements in, or relating to, convection furnaces

Publications (1)

Publication Number Publication Date
GB669351A true GB669351A (en) 1952-04-02

Family

ID=9980587

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1113049A Expired GB669351A (en) 1949-04-27 1949-04-27 Improvements in, or relating to, convection furnaces

Country Status (1)

Country Link
GB (1) GB669351A (en)

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