GB721124A - Electromagnetic stirring winding for melting furnaces and the like - Google Patents

Electromagnetic stirring winding for melting furnaces and the like

Info

Publication number
GB721124A
GB721124A GB22108/53A GB2210853A GB721124A GB 721124 A GB721124 A GB 721124A GB 22108/53 A GB22108/53 A GB 22108/53A GB 2210853 A GB2210853 A GB 2210853A GB 721124 A GB721124 A GB 721124A
Authority
GB
United Kingdom
Prior art keywords
coils
furnaces
equal
furnace
yoke
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
GB22108/53A
Inventor
Ludwig Dreyfus
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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
Priority to CA571943A priority Critical patent/CA571943A/en
Application filed by ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Priority to GB22108/53A priority patent/GB721124A/en
Priority to DEA20877A priority patent/DE1025541B/en
Priority to US448841 priority patent/USRE24462E/en
Priority to BE531074D priority patent/BE531074A/xx
Priority to FR1106428D priority patent/FR1106428A/en
Publication of GB721124A publication Critical patent/GB721124A/en
Priority to GB3019257A priority patent/GB818658A/en
Priority to FR72386D priority patent/FR72386E/en
Priority to BE561561D priority patent/BE561561A/xx
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
    • H05B6/34—Arrangements for circulation of melts
    • 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
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/02—Stirring of melted material in melting furnaces

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Furnace Details (AREA)
  • General Induction Heating (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

721,124. Inductive stirrers for electric furnaces. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Aug. 11, 1953, No. 22108/53. Class 39 (3) A stirring winding for melting furnaces or hot metal mixers fed symmetrically from two phases so that the current in one phase has 90 degrees phase displacement with respect to. the current in the other phase comprises five cylindrical coils n1 ... n5 slid on one or more laminated non- slotted straight or curved magnetic yokes 30 arranged below the bottom 10 of the furnace, and the winding of each yoke consists of five successive sections having numbers of turns n1=n5, n2 = n4 and n3 <SP>></SP>= < 2n1. All the coils are of the same length and have the same inner contour, and the coils of the different phases are insulated from each other by insulating pieces 80. The short sides and lower side of the coil are covered by metallic members of low ohmic resistivity to minimize the ineffective part of the magnetic flux. Cooling water or air is circulated between spacer bars in a space between the coils and the yoke. For furnaces having cylindrical or spherical bottoms 10 with a centre angle 2a, the yoke consists of two equal legs 30 forming an angle 180 degrees-α at the junction point, the middle current zone being divided into equal halves 3<SP>1</SP>, 3". For furnaces having plane bottoms, the yoke consists of two equal legs joined in alignment and reinforced, the middle current zone being divided into equal halves. Two parallel sets of windings and yokes of equal length with a reinforcing stay between them may be mounted below the bottom of the furnace, and may carry reinforcing girders of non-magnetic material to support the furnace bottom. The upper surface of the windings may carry a layer of protective refractory material.
GB22108/53A 1953-08-11 1953-08-11 Electromagnetic stirring winding for melting furnaces and the like Expired GB721124A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CA571943A CA571943A (en) 1953-08-11 Polyphase stirring winding
GB22108/53A GB721124A (en) 1953-08-11 1953-08-11 Electromagnetic stirring winding for melting furnaces and the like
DEA20877A DE1025541B (en) 1953-08-11 1954-08-02 Agitation winding
US448841 USRE24462E (en) 1953-08-11 1954-08-10 Dreyfus
BE531074D BE531074A (en) 1953-08-11 1954-08-11
FR1106428D FR1106428A (en) 1953-08-11 1954-08-11 Polyphase patch winding
GB3019257A GB818658A (en) 1953-08-11 1957-09-26
FR72386D FR72386E (en) 1953-08-11 1957-10-11 Polyphase patch winding
BE561561D BE561561A (en) 1953-08-11 1957-10-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22108/53A GB721124A (en) 1953-08-11 1953-08-11 Electromagnetic stirring winding for melting furnaces and the like

Publications (1)

Publication Number Publication Date
GB721124A true GB721124A (en) 1954-12-29

Family

ID=10174024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22108/53A Expired GB721124A (en) 1953-08-11 1953-08-11 Electromagnetic stirring winding for melting furnaces and the like

Country Status (6)

Country Link
US (1) USRE24462E (en)
BE (1) BE531074A (en)
CA (1) CA571943A (en)
DE (1) DE1025541B (en)
FR (1) FR1106428A (en)
GB (1) GB721124A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1185377A (en) * 1956-02-02 1959-07-31 Asea Ab Stirring coil device for metallurgical furnaces
GB817046A (en) * 1956-10-30 1959-07-22 Asea Ab Improvements in water cooled stirring windings for furnaces
GB823018A (en) * 1957-04-03 1959-11-04 Asea Ab Electric stirring mcans for metallurgical furnaces or the like
US3012083A (en) * 1959-02-26 1961-12-05 Asea Ab Electric stirring windings
US3203768A (en) * 1961-08-01 1965-08-31 Westinghouse Electric Corp Apparatus of zone refining and controlling solute segregation in solidifying melts by electromagnetic means
DE1533081B1 (en) * 1966-02-15 1971-01-21 Leybold Heraeus Gmbh & Co Kg Coreless induction furnace for melting and stirring metals and procedures for operating this furnace
SE466586B (en) * 1988-12-07 1992-03-09 Asea Brown Boveri ELECTROMAGNETIC MOVER BEFORE STRING

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE610530C (en) * 1935-03-12 Aeg High frequency induction furnace for heating and melting batches of large transverse dimensions and low heights
US1791934A (en) * 1925-12-21 1931-02-10 Ajax Electrothermic Corp Induction heating
US1943802A (en) * 1930-03-18 1934-01-16 Ajax Electrothermic Corp Electric induction furnace

Also Published As

Publication number Publication date
DE1025541B (en) 1958-03-06
FR1106428A (en) 1955-12-19
US2759035A (en) 1956-08-14
BE531074A (en) 1957-11-08
USRE24462E (en) 1958-04-22
CA571943A (en) 1959-03-10

Similar Documents

Publication Publication Date Title
US2513082A (en) Induction stirrer
US2774803A (en) Inductive stirring device for metallurgical furnace
US2493950A (en) High-frequency inductive welding apparatus
US5844213A (en) Induction heating coil assembly for prevention of circulating currents in induction heating lines for continuous-cast products
US11371115B2 (en) Heating device and corresponding apparatus and method
US3396258A (en) Apparatus for induction heating
US2363582A (en) Method of and means for stirring or circulating molten or liquid materials or mediums
GB721124A (en) Electromagnetic stirring winding for melting furnaces and the like
US3562470A (en) Induction heating apparatus
US2182341A (en) Radio tube manufacture
US2908880A (en) Magnetic core
US2256518A (en) Electric furnace
US1834725A (en) External field eliminator
US1378188A (en) Ladle-heating by high-frequency currents
US3691339A (en) Multi-phase induction heating device
US1795926A (en) Induction furnace
US2517098A (en) Induction furnace
GB1451287A (en) Induction furnace
US1743956A (en) Induction furnace
GB823018A (en) Electric stirring mcans for metallurgical furnaces or the like
US2513376A (en) Induction heating coil
US1852214A (en) Inductor type furnace
US2832877A (en) Cross-field furnace having auxiliary poles without coils
US1879361A (en) Electric induction furnace
US2965740A (en) Method for welding plate edges