GB1328548A - Microwave heating apparatus - Google Patents

Microwave heating apparatus

Info

Publication number
GB1328548A
GB1328548A GB5615270A GB5615270A GB1328548A GB 1328548 A GB1328548 A GB 1328548A GB 5615270 A GB5615270 A GB 5615270A GB 5615270 A GB5615270 A GB 5615270A GB 1328548 A GB1328548 A GB 1328548A
Authority
GB
United Kingdom
Prior art keywords
conductor
cavity
energy distribution
diagonals
waveguide
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
GB5615270A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1328548A publication Critical patent/GB1328548A/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
    • H05B6/74—Mode transformers or mode stirrers
    • 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
    • H05B6/72—Radiators or antennas

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

1328548 Microwave oven MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 25 Nov 1970 [1 Dec 1969] 56152/70 Heading H5H A microwave oven is evenly energized by transmitting the microwave output of oscillator 21 via a first waveguide 7 and a second waveguide comprising coaxial conductors 12, 17 to the oven cavity 1, the inner conductor 17 being secured to a rotary shaft 15 of a blade mode stirrer 20 and the outer conductor 12 being fixed in relation to the cavity and being designed to modify the energy distribution and make it more nearly uniform. Although the mode stirrer 20 would provide a uniform energy distribution in a circular cavity the energy distribution modifying means is required to allow for shapes other than circular e.g. square, rectangular or hexagonal. As shown, conductor 12 is provided with four angular spaced projections 14 which lie on the diagonals of the rectangular cavity. In Figs. 3, 4 and 5 (not shown) the conductor 12 is provided with metal pins lying on the diagonals of the cavities. In other embodiments notches are formed in the bottom of conductor 12, portions of the conductor 12 are thickened, or apertures are formed in conductor 12.
GB5615270A 1969-12-01 1970-11-25 Microwave heating apparatus Expired GB1328548A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44096984A JPS4837532B1 (en) 1969-12-01 1969-12-01

Publications (1)

Publication Number Publication Date
GB1328548A true GB1328548A (en) 1973-08-30

Family

ID=14179461

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5615270A Expired GB1328548A (en) 1969-12-01 1970-11-25 Microwave heating apparatus

Country Status (6)

Country Link
US (1) US3643055A (en)
JP (1) JPS4837532B1 (en)
DE (1) DE2058901C3 (en)
FR (1) FR2072618A5 (en)
GB (1) GB1328548A (en)
SE (1) SE361523B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000420A (en) * 1977-06-09 1979-01-04 Bosch Siemens Hausgeraete Microwave heating device

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3798404A (en) * 1972-12-21 1974-03-19 Gen Electric Electronic oven with mode exciter
US3823295A (en) * 1973-01-02 1974-07-09 Gen Electric Electronic oven with mode exciter and tuning probes
DE2459351C3 (en) * 1973-12-18 1978-05-03 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka (Japan) Microwave oven
GB1543980A (en) * 1975-05-19 1979-04-11 Matsushita Electric Ind Co Ltd Microwave heating apparatus
JPS5349347A (en) * 1976-10-18 1978-05-04 Hitachi Heating Appliance Co Ltd Microwave oven
CA1105567A (en) * 1976-12-23 1981-07-21 Raytheon Company Radiating mode stirrer for microwave heating system
JPS53100641A (en) * 1977-02-14 1978-09-02 Teruo Adachi Apparatus for removing snow for buildings
DE2857841C1 (en) * 1977-10-14 1982-07-15 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Microwave oven
CA1109526A (en) 1977-10-14 1981-09-22 Junzo Tanaka Microwave oven having l-shaped antenna
CA1118844A (en) * 1977-11-02 1982-02-23 Bernard J. Weiss Combination microwave oven with a multi-port radiator
US4314127A (en) * 1977-11-02 1982-02-02 Raytheon Company Microwave oven with rotating multiport radiator
DE2850236C2 (en) * 1977-12-19 1981-10-08 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Microwave oven
JPS5514688A (en) * 1978-07-18 1980-02-01 Matsushita Electric Ind Co Ltd High frequency heater
CA1134449A (en) * 1978-12-01 1982-10-26 John M. Osepchuk Microwave oven having rotating conductive radiators
US4327266A (en) * 1980-09-12 1982-04-27 Amana Refrigeration, Inc. Microwave ovens for uniform heating
US5272302A (en) * 1991-12-17 1993-12-21 Raytheon Company Microwave oven with improved cooking uniformity
DE19633245C1 (en) * 1996-08-17 1997-11-27 Karlsruhe Forschzent High mode microwave resonator for high temperature treatment of materials
US6072168A (en) * 1996-08-17 2000-06-06 Forschungszentrum Karlsruhe Gmbh Microwave resonator for the high temperature treatment of materials

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920174A (en) * 1957-06-28 1960-01-05 Raytheon Co Microwave ovens
US3353968A (en) * 1963-02-01 1967-11-21 Litton Prec Products Inc Food package for use in microwave heating apparatus
US3364332A (en) * 1964-03-20 1968-01-16 Philips Corp Arrangement in microwave stoves
US3366769A (en) * 1964-12-11 1968-01-30 Philips Corp High frequency heating apparatus
GB1092484A (en) * 1965-04-08 1967-11-22 Microtherm Ltd Improvements in and relating to electronic heating devices
US3532847A (en) * 1965-06-05 1970-10-06 Herbert August Puschner Device for heating non-metallic material
NL136572C (en) * 1965-06-12
US3422240A (en) * 1965-11-18 1969-01-14 Rca Corp Microwave oven
US3431381A (en) * 1966-03-29 1969-03-04 Tappan Co The Dual stirrer assembly
US3505491A (en) * 1968-01-24 1970-04-07 Royden R Freeland Stirrer for microwave ovens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000420A (en) * 1977-06-09 1979-01-04 Bosch Siemens Hausgeraete Microwave heating device
GB2000420B (en) * 1977-06-09 1982-06-23 Bosch Siemens Hausgeraete High frequency heating device

Also Published As

Publication number Publication date
FR2072618A5 (en) 1971-09-24
US3643055A (en) 1972-02-15
DE2058901C3 (en) 1974-05-09
DE2058901B2 (en) 1973-10-11
JPS4837532B1 (en) 1973-11-12
DE2058901A1 (en) 1971-06-09
SE361523B (en) 1973-11-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years