GB331324A - Improvements in or relating to electrical induction furnaces - Google Patents

Improvements in or relating to electrical induction furnaces

Info

Publication number
GB331324A
GB331324A GB1439429A GB1439429A GB331324A GB 331324 A GB331324 A GB 331324A GB 1439429 A GB1439429 A GB 1439429A GB 1439429 A GB1439429 A GB 1439429A GB 331324 A GB331324 A GB 331324A
Authority
GB
United Kingdom
Prior art keywords
screen
coil
tube
furnace
earthed
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
GB1439429A
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB1439429A priority Critical patent/GB331324A/en
Publication of GB331324A publication Critical patent/GB331324A/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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/367—Coil arrangements for melting furnaces
    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/22—Furnaces without an endless core

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Furnace Details (AREA)
  • General Induction Heating (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

331,324. Davis, N. R., and Associated Electrical industries, Ltd. May 8, 1929. Induction furnaces.-An earthed hollow screen or grid through which a cooling fluid is circulated is arranged between the charge and the furnace coil and may be embedded in the furnace lining. The screen is constructed so as not to present a continuous circuit embracing the charge and perpendicular to the magnetic field. Fig. 2 shows a helical screen formed of a flattened tube the central convolution 5 extending over the middle third of its length. Near the ends where the flux is appreciably radial the axial dimension of the coil should not exceed a certain value for which a formula is given. Rubber hose connections 6 are fitted to the ends of the coil. The mid point of the screen is earthed. Fig. 3 shows a screen formed of flattened or oval tubes 10 interconnected at one end by a discontinuous tube 8. The dimension of the major axis of the cross-section of the tube is calculated by the formula previously referred to. The furnace coil may be made of laminated or stranded cable and cooled by natural air circulation or forced draught. Specification 323,561 is referred to.
GB1439429A 1929-05-08 1929-05-08 Improvements in or relating to electrical induction furnaces Expired GB331324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1439429A GB331324A (en) 1929-05-08 1929-05-08 Improvements in or relating to electrical induction furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1439429A GB331324A (en) 1929-05-08 1929-05-08 Improvements in or relating to electrical induction furnaces

Publications (1)

Publication Number Publication Date
GB331324A true GB331324A (en) 1930-07-03

Family

ID=10040397

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1439429A Expired GB331324A (en) 1929-05-08 1929-05-08 Improvements in or relating to electrical induction furnaces

Country Status (1)

Country Link
GB (1) GB331324A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855745C (en) * 1944-04-26 1953-01-19 Philips Nv Device for heating metal workpieces by means of high frequency currents
CN112238186A (en) * 2020-09-04 2021-01-19 中国石油天然气集团有限公司 Method and device for machining small-radius bent pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855745C (en) * 1944-04-26 1953-01-19 Philips Nv Device for heating metal workpieces by means of high frequency currents
CN112238186A (en) * 2020-09-04 2021-01-19 中国石油天然气集团有限公司 Method and device for machining small-radius bent pipe

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