GB752206A - Improvements in or relating to high frequency dielectric heating apparatus - Google Patents

Improvements in or relating to high frequency dielectric heating apparatus

Info

Publication number
GB752206A
GB752206A GB21955/54A GB2195554A GB752206A GB 752206 A GB752206 A GB 752206A GB 21955/54 A GB21955/54 A GB 21955/54A GB 2195554 A GB2195554 A GB 2195554A GB 752206 A GB752206 A GB 752206A
Authority
GB
United Kingdom
Prior art keywords
oven
magnetron
energy
container
horn
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
GB21955/54A
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.)
Raytheon Co
Original Assignee
Raytheon Manufacturing 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
Priority claimed from US391553A external-priority patent/US2827537A/en
Application filed by Raytheon Manufacturing Co filed Critical Raytheon Manufacturing Co
Publication of GB752206A publication Critical patent/GB752206A/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
    • H05B6/745—Rotatable 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
    • H05B6/6402—Aspects relating to the microwave cavity
    • 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
    • H05B6/766—Microwave radiation screens for windows

Abstract

752,206. Dielectric heating. RAYTHEON MANUFACTURING CO. July 27, 1954 [Nov. 12, 1953], No. 21955/54. Class 39(3). High frequency energy for heating food within an oven 19 is produced by a magnetron 10 coupled to the oven by a wave guide 16 and radiating horn 18, and the combined thickness of a support 21 and the bottom of a container 42 which are of dielectric material, is such as to produce an impedance match between the horn and the container. To prevent damage to the magnetron by excessive reflection of energy from the top of the oven when no material is being heated, an aperture 43 in the form of crossed slots is provided in the oven top, the energy being absorbed by a concrete asbestos block 46. Means for varying the mode intensity pattern so as to avoid local hot spots in the material being heated comprises a plate member 53 a symmetrically mounted on a rotatable insulating rod 45 and having a slot 59 whose length is of the order of half a wave length of the operating frequency of the magnetron 10. A lamp 49 mounted on a wall of the horn 18 shines up through the support 21 and container 42 enabling the container contents to be viewed through the transparent top 48 when the oven door 23 is slid back, Fig. 1. The oven is of ceramic coated metal and cyclic frequency variation of the radiated energy may produce mode variation. The oven 19 may be dispensed with and relays may be used to protect the magnetron against excess reflection of energy. A safety interlock switch system may be provided to de-energise the magnetron when the oven door is opened.
GB21955/54A 1953-11-12 1954-07-27 Improvements in or relating to high frequency dielectric heating apparatus Expired GB752206A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US391553A US2827537A (en) 1953-11-12 1953-11-12 Electronic heating apparatus
US581795A US2888543A (en) 1953-11-12 1956-04-30 Electronic heating apparatus

Publications (1)

Publication Number Publication Date
GB752206A true GB752206A (en) 1956-07-04

Family

ID=27013544

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21955/54A Expired GB752206A (en) 1953-11-12 1954-07-27 Improvements in or relating to high frequency dielectric heating apparatus

Country Status (3)

Country Link
US (1) US2888543A (en)
FR (1) FR1112162A (en)
GB (1) GB752206A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888543A (en) * 1953-11-12 1959-05-26 Raytheon Mfg Co Electronic heating apparatus
US2961520A (en) * 1957-04-02 1960-11-22 Gen Motors Corp Domestic appliance
DE102014112522A1 (en) * 2014-09-01 2016-03-03 Miele & Cie. Kg Cooking appliance

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3182166A (en) * 1961-09-04 1965-05-04 Miwag Mikrowellen Ag Microwave ovens
US3234811A (en) * 1962-08-22 1966-02-15 Gen Motors Corp Transmission control system
US3235701A (en) * 1962-10-23 1966-02-15 Miwag Mikrowellen Ag Microwave oven
US3177334A (en) * 1963-03-11 1965-04-06 Gen Electric Oven door window
US3443050A (en) * 1966-02-07 1969-05-06 Herbert August Puschner Apparatus for heating nonmetallic substance,particularly foodstuffs,by microwave energy
US3814890A (en) * 1973-05-16 1974-06-04 Litton Systems Inc Microwave oven having a magnetron extending directly into the oven cavity
USRE32861E (en) * 1973-07-20 1989-02-07 Cem Corporation Automatic volatility computer
US4349713A (en) * 1980-02-19 1982-09-14 Herman Marsen Combined cooking and serving microwave apparatus
GB2187618B (en) * 1986-03-06 1989-11-15 Quindicum Ltd Microwave oven
DE3703133A1 (en) * 1987-02-03 1988-08-11 Buderus Kuechentechnik METHOD AND DEVICE FOR COMPARISONING THE HEATING OF FOOD IN A COOKER HEATED WITH MICROWAVE ENERGY
FR2626134B1 (en) * 1988-01-15 1990-07-06 Mcneil Akron Repiquet Sarl MICROWAVE APPLICATOR FOR PROCESSING PRODUCTS, IN PARTICULAR FOR VULCANIZING RUBBER PRODUCTS OR THE LIKE
DE3818490A1 (en) * 1988-05-31 1989-12-07 Bosch Siemens Hausgeraete MICROWAVE HOUSEHOLD APPLIANCE
GB8822706D0 (en) * 1988-09-28 1988-11-02 Core Consulting Group Microwave-powered heating chamber
GB8822703D0 (en) * 1988-09-28 1988-11-02 Core Consulting Group Microwave-powered heating chamber
GB8822705D0 (en) * 1988-09-28 1988-11-02 Core Consulting Group Microwave-powered heating chamber
KR100988570B1 (en) * 2003-04-10 2010-10-19 삼성전자주식회사 Heating cooker
EP2020827B1 (en) * 2007-07-03 2013-10-23 Whirlpool Corporation Shielding system for microwave ovens and microwave oven using this shielding system.
MX2018003792A (en) * 2015-10-01 2018-06-22 915 Labs Llc Arrangement of articles in a carrier for microwave heating.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2133184A (en) * 1935-05-31 1938-10-11 Malleable Iron Range Company Combination coal-wood electric range
US2540148A (en) * 1945-03-22 1951-02-06 Sperry Corp Ultra high frequency powerselective protective device
US2632838A (en) * 1948-03-04 1953-03-24 Gen Electric Ultrahigh-frequency electromag-netic radiation heating method and apparatus
US2748239A (en) * 1952-09-05 1956-05-29 Gen Motors Corp Domestic appliance
US2765445A (en) * 1952-11-15 1956-10-02 Gen Precision Lab Inc Gas-filled diode discharge tube
GB752206A (en) * 1953-11-12 1956-07-04 Raytheon Mfg Co Improvements in or relating to high frequency dielectric heating apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888543A (en) * 1953-11-12 1959-05-26 Raytheon Mfg Co Electronic heating apparatus
US2961520A (en) * 1957-04-02 1960-11-22 Gen Motors Corp Domestic appliance
DE102014112522A1 (en) * 2014-09-01 2016-03-03 Miele & Cie. Kg Cooking appliance

Also Published As

Publication number Publication date
FR1112162A (en) 1956-03-09
US2888543A (en) 1959-05-26

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