GB882442A - Improvements in or relating to radio frequency dielectric heating apparatus - Google Patents

Improvements in or relating to radio frequency dielectric heating apparatus

Info

Publication number
GB882442A
GB882442A GB38270/59A GB3827059A GB882442A GB 882442 A GB882442 A GB 882442A GB 38270/59 A GB38270/59 A GB 38270/59A GB 3827059 A GB3827059 A GB 3827059A GB 882442 A GB882442 A GB 882442A
Authority
GB
United Kingdom
Prior art keywords
duct
panels
resistive
passage
frequency
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
GB38270/59A
Inventor
Christopher Evan Mundell Tibbs
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.)
Radyne Ltd
Original Assignee
Radyne 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 Radyne Ltd filed Critical Radyne Ltd
Priority claimed from GB2573158A external-priority patent/GB882441A/en
Publication of GB882442A publication Critical patent/GB882442A/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
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
    • 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
    • H05B6/64—Heating using microwaves
    • H05B6/76—Prevention of microwave leakage, e.g. door sealings

Abstract

882,442. Dielectric heating. RADYNE Ltd. Nov. 11, 1959 [Aug. 11, 1958], No. 38270/59. Divided out of 882,441. Class 39(3) [Also in Group XL(b)] A duct for passage of material to be heated in a radio-frequency oven operating at a frequency of less than 500 mc/s., comprises electricallyresistive means for absorbing stray radiation, particularly harmonics. The resistances may be in the form of strips or rods or may comprise panels 29 extending from the narrow sides of the duct. The panels may be made from boards of asbestos, wood, cardboard, concrete, foam rubber &c., painted with a solution of colloidal graphite, or from a mixture of powdered graphite and cement. They are attached to the walls of the duct by conductive brackets. The panels may be arranged to extend from all four walls of the duct to define a rectangular central passage for material to be heated. This passage may be lined by resistive panels to form an inner duct 40, Fig. 6. A series of resistive ducts may be arranged one within another and the space between them filled with e.g. foam polystyrene. The outer metal shell may be omitted. The duct may be provided with a quarter-wave extension for suppression of a particular frequency or two or more resistive ducts may be connected by such quarter-wave sections. The conveyer may be of insulating material. If a metal conveyer is used it must be conductively or capacitatively coupled to the resistive panels.
GB38270/59A 1958-08-11 1958-08-11 Improvements in or relating to radio frequency dielectric heating apparatus Expired GB882442A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2573158A GB882441A (en) 1958-08-11 1958-08-11 Improvements in or relating to radio frequency dielectric heating apparatus
GB3050606X 1959-02-13

Publications (1)

Publication Number Publication Date
GB882442A true GB882442A (en) 1961-11-15

Family

ID=32472193

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38270/59A Expired GB882442A (en) 1958-08-11 1958-08-11 Improvements in or relating to radio frequency dielectric heating apparatus

Country Status (4)

Country Link
US (1) US3050606A (en)
FR (1) FR1248326A (en)
GB (1) GB882442A (en)
NL (1) NL248295A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4909685A (en) * 1985-11-13 1990-03-20 Exotech Limited Fastener, power tool for use with same and method tightening the fastener

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3581251A (en) * 1949-05-27 1971-05-25 Philips Corp Microwave tube cooling assembly
US3239643A (en) * 1963-06-28 1966-03-08 Hammtronics Systems Inc Ultra-high frequency heating system
US3309634A (en) * 1964-12-14 1967-03-14 Hazeltine Research Inc Transmission line attenuators for high power
US3466415A (en) * 1967-09-29 1969-09-09 Canadian Patents Dev Apparatus for dielectric heating
US3555232A (en) * 1968-10-21 1971-01-12 Canadian Patents Dev Waveguides
FR2081695B1 (en) * 1970-03-04 1976-02-06 Husqvarna Vapenfabriks A Sw
US3641465A (en) * 1970-09-15 1972-02-08 Atomic Energy Commission Compact high-power broadband radiofrequency load termination
JPS5018182Y1 (en) * 1970-12-16 1975-06-04
GB1392498A (en) * 1971-05-20 1975-04-30 Matsushita Electric Ind Co Ltd Microwave oven
US3774003A (en) * 1971-07-27 1973-11-20 Dca Food Ind Adjustable end traps
US3754111A (en) * 1972-04-05 1973-08-21 Gerling Moore Inc Access tunnel and attenuator for microwave ovens
US3858022A (en) * 1972-04-21 1974-12-31 Microdry Corp Microwave applicator
US4039795A (en) * 1974-09-16 1977-08-02 Philip Morris Incorporated Apparatus for transporting materials for treatment of said materials in a microwave unit
US4268803A (en) * 1979-05-24 1981-05-19 Communications Satellite Corporation Periodic lid for integrated circuit
JPS57124380A (en) * 1981-01-26 1982-08-03 Canon Inc Fixing device
US5958275A (en) * 1997-04-29 1999-09-28 Industrial Microwave Systems, Inc. Method and apparatus for electromagnetic exposure of planar or other materials

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567748A (en) * 1943-10-02 1951-09-11 Milton G White Control of wave length in wave guides
DE893819C (en) * 1944-12-23 1953-10-19 Siemens Ag Hollow pipeline
US2659817A (en) * 1948-12-31 1953-11-17 Bell Telephone Labor Inc Translation of electromagnetic waves
US2764743A (en) * 1949-12-30 1956-09-25 Bell Telephone Labor Inc Microwave frequency-selective mode absorber
GB671206A (en) * 1950-08-04 1952-04-30 Standard Telephones Cables Ltd Improvements in or relating to electric impedance networks
US2770784A (en) * 1952-06-25 1956-11-13 Robert H Hatch Metal painted aperture or window for waveguides
US2868939A (en) * 1956-01-16 1959-01-13 Chemetron Corp Suppression of radiation from dielectric heating applicators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4909685A (en) * 1985-11-13 1990-03-20 Exotech Limited Fastener, power tool for use with same and method tightening the fastener

Also Published As

Publication number Publication date
NL248295A (en)
US3050606A (en) 1962-08-21
FR1248326A (en) 1960-10-31

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