US2662162A - High-frequency furnace - Google Patents

High-frequency furnace Download PDF

Info

Publication number
US2662162A
US2662162A US261107A US26110751A US2662162A US 2662162 A US2662162 A US 2662162A US 261107 A US261107 A US 261107A US 26110751 A US26110751 A US 26110751A US 2662162 A US2662162 A US 2662162A
Authority
US
United States
Prior art keywords
coil
circuit
frequency furnace
furnace
output
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 - Lifetime
Application number
US261107A
Other languages
English (en)
Inventor
Blok Lourens
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.)
Hartford National Bank and Trust Co
Original Assignee
Hartford National Bank and Trust Co
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 Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
Application granted granted Critical
Publication of US2662162A publication Critical patent/US2662162A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H05B6/04—Sources of current

Definitions

  • the ends of the circuit 2, which is constructed as a unit, are secured through flexible connecting leads l'l and I8 to the further ⁇ stationary part of the oscillator circuit.
  • the connecting lead i3 is coupled through a blocking capacitor with the anode of the tube I and the connecting lead il is coupled through a grid capacitor t with the control-grid of the tube l and through a coil i with a grounded leak resistor i.
  • the junction of the circuit capacitors l'. and li' is connected as shown in Fig. 2, through a lead it to the ground plate 22 and is grounded by way of the wheels 23 and the grounded rails 24.
  • the tube l is arranged laterally with respect to the displaceable structural unit, thus providing the further advantage that the loops of the flexible connections are only slightly deformed, when the structural unit is displaced.
  • a screening strip 21 (partly removed in the drawing) is inserted between the tube and the circuit unit in order to avoid unwanted coupling of the grid circuit of the tube with other circuit elements. Any tendency of the circuit-arrangement towards parasitic oscillation is thus strongly reduced. For the same reasons it desirable to provide a screening plate 23 between the grid circuit and the anode circuit of the tube.
  • the flexible connections I6 to I3 do not transmit the comparatively high circuit or load currents, in contradistinction to known constructions of high-frequency furnaces.
  • the flexible connections transmit approximately 3 amp. with a circuit current of about 8O amp.
  • the use of the invention provides a construction of a high-frequency furnace, which is attractive from the electrical point of view, the ad- 4 vantages of this construction largely compensating for the slightly less simple structural arrangement, particularly with the use of highfrequency furnaces of high power.
  • a high-frequency furnace including an output discharge tube having an output electrode and an oscillatory circuit coupled to said electrode and constituted by a coil and a capacitance, a carrier for supporting said coil and said capacitance as a structural unit, an output coil xedly mounted in said furnace for inductively coupling said oscillatory circuit to a load, and means movably mounting said unit in said furnace to effect displacement of said circuit coil relative to said coupling coil.
  • a furnace as set forth in claim 1 further includingrneans to force-cool said circuit coil.
  • a high-frequency furnace including an output discharge tube having an output electrode and an oscillatory circuit coupled to said elec-l trode and constituted by a coil and a capacitance, said circuit coil being Wound in the form of a cylinder, a carrier for supporting said coil and said capacitance as a structural unit, an output coil nxedly mounted in said furnace for inductively coupling said oscillatory circuit to a load, said output coil being constituted by a cylindricaliy bent ribbon and surrounding said circuit coil, and means movably mounting said unit in said furnace to effect axial displacement 0f said circuit coil relative to said coupling coil.
  • a high-frequency furnace including an output discharge tube having an output electrode and an oscillatory circuit coupled to said electrode and constituted by a coil and a capacitance, said circuit coil being wound in the form of a cylinder, a rolling carrier for supporting said coil and said capacitance as a structural unit, an output coil flxedly mounted in said furnace for inductively coupling said oscillatory circuit to a load, said output coil being constituted by a cylindrically bent ribbon and surrounding said circuit coil, and means including rails for moving said rolling carrier in said furnace to effect axial displacement of said circuit coil relative to said coupling coil through a distance equal to the axial length of said circuit coil.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
  • Furnace Details (AREA)
US261107A 1951-01-12 1951-12-11 High-frequency furnace Expired - Lifetime US2662162A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL298303X 1951-01-12

Publications (1)

Publication Number Publication Date
US2662162A true US2662162A (en) 1953-12-08

Family

ID=19783091

Family Applications (1)

Application Number Title Priority Date Filing Date
US261107A Expired - Lifetime US2662162A (en) 1951-01-12 1951-12-11 High-frequency furnace

Country Status (7)

Country Link
US (1) US2662162A (it)
BE (1) BE508359A (it)
CH (1) CH298303A (it)
DE (1) DE960843C (it)
FR (1) FR1048216A (it)
GB (1) GB716891A (it)
NL (1) NL78609C (it)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799760A (en) * 1952-12-03 1957-07-16 Fruengel Frank Method and device for high-frequency soldering and induction hardening
US2809357A (en) * 1953-01-22 1957-10-08 Philips Corp Coil system for high-frequency heating generators
US2813184A (en) * 1953-09-29 1957-11-12 Armstrong Cork Co Dielectric heating system
US3021413A (en) * 1958-12-22 1962-02-13 Philips Corp High-frequency furnace for inductive heating
US3137831A (en) * 1958-02-13 1964-06-16 Zenith Radio Corp Layer-wound air-core transformer
DE1218086B (de) * 1961-10-13 1966-06-02 Mannesmann Meer Ag Rohrschweissmaschine
US3272955A (en) * 1963-02-13 1966-09-13 Yamaguchi Sakuji Method of coupling high frequency electric circuit
US3377565A (en) * 1965-12-24 1968-04-09 Patelhold Patentverwertung Variable high-frequency transformer
US3440387A (en) * 1965-11-12 1969-04-22 Philips Corp High frequency heating system with inductive plasma
US3651301A (en) * 1968-05-12 1972-03-21 Ncr Co Installation for casting microwire in glass insulation
US3777096A (en) * 1971-06-09 1973-12-04 Park Ohio Industries Inc Apparatus for inductively heating valve seats
US3849625A (en) * 1972-06-26 1974-11-19 Elphiac Sa Induction heating device
US4017701A (en) * 1972-02-29 1977-04-12 Illinois Tool Works Inc. Induction heating unit with combined tank circuit and heating coil
US4058696A (en) * 1975-06-17 1977-11-15 Tocco-Stel Induction heating apparatus comprising a static converter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007898B (de) * 1954-02-16 1957-05-09 Deutsche Edelstahlwerke Ag Induktionserwaermungsanlage
DE1058170B (de) * 1954-07-16 1959-05-27 Radio Heaters Ltd Koppler fuer dielektrische Hochfrequenz-Erhitzungseinrichtungen
DE1177702B (de) * 1955-04-23 1964-09-10 Siemens Ag Anordnung zum stufenlosen Anpassen eines Hochfrequenzgenerators an den veraenderlichen Widerstand von einzelnen Verbrauchern
CA984009A (en) * 1972-02-29 1976-02-17 Illinois Tool Works Inc. Induction heating unit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1043272A (en) * 1911-02-04 1912-11-05 William E D Stokes Tuning device for wireless telegraphy and telephony.
US1753182A (en) * 1927-11-28 1930-04-01 Hammarlund Mfg Company Inc Variable coupling device
US2294413A (en) * 1939-04-25 1942-09-01 Raytheon Mfg Co Method of locally heat-treating metal bodies
US2522035A (en) * 1943-08-09 1950-09-12 Hartford Nat Bank & Trust Co Device for controlling the coupling between two inductively coupled circuits
US2551756A (en) * 1944-07-21 1951-05-08 Mittelmann Eugene High-frequency heating method and apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE463478C (de) * 1926-01-06 1928-08-03 Int Standard Electric Corp Fremdgesteuerter Roehrensender
DE527452C (de) * 1928-02-25 1931-06-18 Hirsch Kupfer Und Messingwerke Verfahren zur Regelung der Bewegung des Metallbades in eisenlosen Induktionsoefen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1043272A (en) * 1911-02-04 1912-11-05 William E D Stokes Tuning device for wireless telegraphy and telephony.
US1753182A (en) * 1927-11-28 1930-04-01 Hammarlund Mfg Company Inc Variable coupling device
US2294413A (en) * 1939-04-25 1942-09-01 Raytheon Mfg Co Method of locally heat-treating metal bodies
US2522035A (en) * 1943-08-09 1950-09-12 Hartford Nat Bank & Trust Co Device for controlling the coupling between two inductively coupled circuits
US2551756A (en) * 1944-07-21 1951-05-08 Mittelmann Eugene High-frequency heating method and apparatus

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799760A (en) * 1952-12-03 1957-07-16 Fruengel Frank Method and device for high-frequency soldering and induction hardening
US2809357A (en) * 1953-01-22 1957-10-08 Philips Corp Coil system for high-frequency heating generators
US2813184A (en) * 1953-09-29 1957-11-12 Armstrong Cork Co Dielectric heating system
US3137831A (en) * 1958-02-13 1964-06-16 Zenith Radio Corp Layer-wound air-core transformer
US3021413A (en) * 1958-12-22 1962-02-13 Philips Corp High-frequency furnace for inductive heating
DE1218086B (de) * 1961-10-13 1966-06-02 Mannesmann Meer Ag Rohrschweissmaschine
US3272955A (en) * 1963-02-13 1966-09-13 Yamaguchi Sakuji Method of coupling high frequency electric circuit
US3440387A (en) * 1965-11-12 1969-04-22 Philips Corp High frequency heating system with inductive plasma
US3377565A (en) * 1965-12-24 1968-04-09 Patelhold Patentverwertung Variable high-frequency transformer
US3651301A (en) * 1968-05-12 1972-03-21 Ncr Co Installation for casting microwire in glass insulation
US3777096A (en) * 1971-06-09 1973-12-04 Park Ohio Industries Inc Apparatus for inductively heating valve seats
US4017701A (en) * 1972-02-29 1977-04-12 Illinois Tool Works Inc. Induction heating unit with combined tank circuit and heating coil
US3849625A (en) * 1972-06-26 1974-11-19 Elphiac Sa Induction heating device
US4058696A (en) * 1975-06-17 1977-11-15 Tocco-Stel Induction heating apparatus comprising a static converter

Also Published As

Publication number Publication date
BE508359A (it)
NL78609C (it)
FR1048216A (fr) 1953-12-21
DE960843C (de) 1957-03-28
CH298303A (de) 1954-04-30
GB716891A (en) 1954-10-13

Similar Documents

Publication Publication Date Title
US2662162A (en) High-frequency furnace
US2404261A (en) Ultra high frequency system
US2175710A (en) Variable coupling arrangement
US2692372A (en) Wide band radio frequency choke coil
US2424089A (en) Ultra high frequency amplifier
USRE20189E (en) Oscillation circuit for electric
US2681953A (en) Neutralizing circuit for groundedgrid amplifiers
US2428193A (en) Magnetron
US1960058A (en) Composite support and condenser
US2125969A (en) Ultrahigh frequency oscillator
US2530995A (en) Oscillator tank circuit configuration
US2463724A (en) Electron discharge circuit having folded anode inductors
US2097519A (en) Signal transmission system
US2218309A (en) Thermionic valve apparatus for use on very short wave lengths
US2522370A (en) High-frequency coupling device
US2771516A (en) Means of coupling energy to or from a coaxial resonator
US3020447A (en) Magnetron systems
US2314132A (en) High frequency amplifier
US2913631A (en) Coupling and tuning circuit for high frequency luminescent sign
US3125656A (en) High frequency heating apparatus
US2745011A (en) Very high frequency gas discharge noise source
US2545985A (en) High-frequency oscillator
US2397701A (en) Frequency control in ultra high frequency circuit
US2125900A (en) Ultrahigh frequency apparatus
US2745013A (en) Very high frequency gas discharge noise source