ATE175540T1 - HIGH FREQUENCY ELECTRODE FURNACE WITH POWER CONTROL - Google Patents

HIGH FREQUENCY ELECTRODE FURNACE WITH POWER CONTROL

Info

Publication number
ATE175540T1
ATE175540T1 AT89908335T AT89908335T ATE175540T1 AT E175540 T1 ATE175540 T1 AT E175540T1 AT 89908335 T AT89908335 T AT 89908335T AT 89908335 T AT89908335 T AT 89908335T AT E175540 T1 ATE175540 T1 AT E175540T1
Authority
AT
Austria
Prior art keywords
foodstuff
power
electrodes
electric field
transferred
Prior art date
Application number
AT89908335T
Other languages
German (de)
Inventor
Lucas A Butot
Ruiter J W De
Original Assignee
Super M Associates
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 claimed from US07/207,561 external-priority patent/US4978826A/en
Application filed by Super M Associates filed Critical Super M Associates
Application granted granted Critical
Publication of ATE175540T1 publication Critical patent/ATE175540T1/en

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
    • H05B6/46—Dielectric heating
    • H05B6/48—Circuits
    • H05B6/50—Circuits for monitoring or control
    • 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
    • H05B6/46—Dielectric heating
    • H05B6/62—Apparatus for specific applications

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

A high-frequency dielectric oven (124) uses a plurality of oscillating circuits (24, 26), which are caused to operate in a predetermined phase relationship, to produce a higher voltage distribution within a load capacitor (44, 46), thus permitting an increase in the space between the electrode plates (134, 136, 144, 146) of the load capacitor (44, 46) to enable use of the oven (124) for heating commercial quantities of foodstuff. The generated electric field has a distribution which minimizes the number of nodes of a standing wave, thus reducing the occurrences of cold spots in the heating cavity (126). A plurality of tray levels are provided, each level having a separate pair of electrodes (134, 136, 144, 146) generating the electric field therefor. The electrodes (134, 136, 144, 146) may be shaped to provide direct support for the trays. Power transferred to the foodstuff is controlled by a variable air gap capacitor and the power tube (22) operates at a substantially constant power level, irrespective of the power being transferred to the foodstuff.
AT89908335T 1988-06-16 1989-06-16 HIGH FREQUENCY ELECTRODE FURNACE WITH POWER CONTROL ATE175540T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/207,561 US4978826A (en) 1986-11-21 1988-06-16 High frequency oven with plural heating levels and an improved efficiency of power transfer

Publications (1)

Publication Number Publication Date
ATE175540T1 true ATE175540T1 (en) 1999-01-15

Family

ID=22771090

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89908335T ATE175540T1 (en) 1988-06-16 1989-06-16 HIGH FREQUENCY ELECTRODE FURNACE WITH POWER CONTROL

Country Status (6)

Country Link
EP (1) EP0422123B1 (en)
KR (1) KR900702749A (en)
AT (1) ATE175540T1 (en)
AU (1) AU3878689A (en)
DE (1) DE68928898T2 (en)
WO (1) WO1989012947A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2671929A1 (en) * 1991-01-18 1992-07-24 Thomson Tubes Electroniques HEATING GENERATOR BY HIGH FREQUENCY.
US5256845A (en) * 1992-01-21 1993-10-26 Npbi Mederlands Produktielaboratorium Voor Bloedtransfusieapparatuur En Infusievloeistoffen B.V. Apparatus for sealing medical plastic tubing with high frequency dielectric heating
US5556567A (en) * 1994-05-09 1996-09-17 Henny Penny Corporation System and process for controlling dielectric ovens
US5512737A (en) * 1994-05-09 1996-04-30 Henny Penny Corporation Oven liner for dielectric oven
US5541392A (en) * 1994-05-09 1996-07-30 Henny Penny Corporation Product tray for dielectric oven
DE69915466T2 (en) 1998-05-05 2005-01-20 Massachusetts Institute Of Technology, Cambridge Light-emitting polymers and devices containing them
KR101584397B1 (en) 2009-11-10 2016-01-11 고지 엘티디. Device and method for heating using rf energy
CN107734728B (en) * 2017-11-08 2024-07-05 扬州快乐机械有限公司 Article heating equipment

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125656A (en) * 1964-03-17 High frequency heating apparatus
US2401277A (en) * 1944-04-04 1946-05-28 Compo Shoe Machinery Corp Electrostatic heating apparatus
US2567983A (en) * 1946-12-19 1951-09-18 Wood Electro Process Company Method of drying lumber
US2765388A (en) * 1953-03-30 1956-10-02 Nat Cylinder Gas Co Apparatus for controlling oscillator grid drive
US3386551A (en) * 1966-11-14 1968-06-04 Litton Business Systems Inc Method of and apparatus for using radio or high frequency energy to produce printed matter
US4119826A (en) 1977-04-04 1978-10-10 Champion International Corporation Dielectric heat generator
US4296298A (en) * 1978-06-12 1981-10-20 Raytheon Company Dielectric cooking apparatus
US4531038A (en) 1984-06-11 1985-07-23 Champion International Corporation Radio frequency dielectric heater
NL8602956A (en) * 1986-11-21 1988-06-16 I K International B V DEVICE FOR HEATING A PRODUCT BY DIELECTRIC HIGH-FREQUENT HEATING.

Also Published As

Publication number Publication date
EP0422123A4 (en) 1991-10-30
EP0422123B1 (en) 1999-01-07
WO1989012947A1 (en) 1989-12-28
DE68928898T2 (en) 1999-08-12
AU3878689A (en) 1990-01-12
EP0422123A1 (en) 1991-04-17
DE68928898D1 (en) 1999-02-18
KR900702749A (en) 1990-12-08

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties