EP0277342A3 - Method and device to homogenize the heating of food in a cooking oven heated by microwaves - Google Patents

Method and device to homogenize the heating of food in a cooking oven heated by microwaves Download PDF

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Publication number
EP0277342A3
EP0277342A3 EP87118985A EP87118985A EP0277342A3 EP 0277342 A3 EP0277342 A3 EP 0277342A3 EP 87118985 A EP87118985 A EP 87118985A EP 87118985 A EP87118985 A EP 87118985A EP 0277342 A3 EP0277342 A3 EP 0277342A3
Authority
EP
European Patent Office
Prior art keywords
microwaves
homogenize
food
heating
cooking oven
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.)
Granted
Application number
EP87118985A
Other languages
German (de)
Other versions
EP0277342B1 (en
EP0277342A2 (en
Inventor
Gerd Dr. Naumann
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.)
Electrolux Juno Kuchentechnik GmbH
Original Assignee
BUDERUS KUCHENTECHNIK GmbH
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 BUDERUS KUCHENTECHNIK GmbH filed Critical BUDERUS KUCHENTECHNIK GmbH
Priority to AT87118985T priority Critical patent/ATE91375T1/en
Publication of EP0277342A2 publication Critical patent/EP0277342A2/en
Publication of EP0277342A3 publication Critical patent/EP0277342A3/en
Application granted granted Critical
Publication of EP0277342B1 publication Critical patent/EP0277342B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05B6/70—Feed lines
    • H05B6/707—Feed lines using waveguides
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Electric Ovens (AREA)
  • General Preparation And Processing Of Foods (AREA)

Abstract

The known methods for homogenising the field distribution in a cooking space heated by microwaves, such as rotating antennas, rotating plates and wave stirrers, are relatively expensive. The characteristic impedance is periodically changed by means of a rotating element (5) arranged in the waveguide (3) between the magnetron (1) and the injection aperture (6) into the cooking space (2). In this way, the output frequency of the magnetron is also changed, resulting in homogenisation of the field. <IMAGE>
EP87118985A 1987-02-03 1987-12-21 Method and device to homogenize the heating of food in a cooking oven heated by microwaves Expired - Lifetime EP0277342B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87118985T ATE91375T1 (en) 1987-02-03 1987-12-21 METHOD AND APPARATUS FOR EQUALIZING THE HEATING OF FOOD IN A MICROWAVE ENERGY HEATED COOKING APPLIANCE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3703133 1987-02-03
DE19873703133 DE3703133A1 (en) 1987-02-03 1987-02-03 METHOD AND DEVICE FOR COMPARISONING THE HEATING OF FOOD IN A COOKER HEATED WITH MICROWAVE ENERGY

Publications (3)

Publication Number Publication Date
EP0277342A2 EP0277342A2 (en) 1988-08-10
EP0277342A3 true EP0277342A3 (en) 1988-08-31
EP0277342B1 EP0277342B1 (en) 1993-07-07

Family

ID=6320098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87118985A Expired - Lifetime EP0277342B1 (en) 1987-02-03 1987-12-21 Method and device to homogenize the heating of food in a cooking oven heated by microwaves

Country Status (3)

Country Link
EP (1) EP0277342B1 (en)
AT (1) ATE91375T1 (en)
DE (2) DE3703133A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3818490A1 (en) * 1988-05-31 1989-12-07 Bosch Siemens Hausgeraete MICROWAVE HOUSEHOLD APPLIANCE
DE3843039A1 (en) * 1988-12-21 1990-06-28 Bosch Siemens Hausgeraete Domestic appliance
WO1997047161A2 (en) * 1996-06-03 1997-12-11 Matsushita Electric Industrial Co., Ltd. Microwave heating apparatus
EP2187702A1 (en) * 2008-11-17 2010-05-19 Topinox Sarl Cooking device with microwave heating

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1112162A (en) * 1953-11-12 1956-03-09 Raytheon Mfg Co Electric heater
US2761942A (en) * 1952-06-06 1956-09-04 Raytheon Mfg Co Heating apparatus
FR1208182A (en) * 1957-12-10 1960-02-22 Miwag Mikrowellen A G Device for generating a defined primary field distribution in a cavity for heating organic substances by means of microwave frequencies
FR1341837A (en) * 1961-12-13 1963-11-02 Patentverwertungs & Elektro Ho Dielectric material heater
DE1907166A1 (en) * 1968-02-19 1969-09-11 Varian Associates Arrangement for the application of microwave energy of a given wavelength on materials
FR2119479A5 (en) * 1970-12-21 1972-08-04 Philips Nv
US4301347A (en) * 1980-08-14 1981-11-17 General Electric Company Feed system for microwave oven
US4336434A (en) * 1980-08-15 1982-06-22 General Electric Company Microwave oven cavity excitation system employing circularly polarized beam steering for uniformity of energy distribution and improved impedance matching

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761942A (en) * 1952-06-06 1956-09-04 Raytheon Mfg Co Heating apparatus
FR1112162A (en) * 1953-11-12 1956-03-09 Raytheon Mfg Co Electric heater
FR1208182A (en) * 1957-12-10 1960-02-22 Miwag Mikrowellen A G Device for generating a defined primary field distribution in a cavity for heating organic substances by means of microwave frequencies
FR1341837A (en) * 1961-12-13 1963-11-02 Patentverwertungs & Elektro Ho Dielectric material heater
DE1907166A1 (en) * 1968-02-19 1969-09-11 Varian Associates Arrangement for the application of microwave energy of a given wavelength on materials
FR2119479A5 (en) * 1970-12-21 1972-08-04 Philips Nv
US4301347A (en) * 1980-08-14 1981-11-17 General Electric Company Feed system for microwave oven
US4336434A (en) * 1980-08-15 1982-06-22 General Electric Company Microwave oven cavity excitation system employing circularly polarized beam steering for uniformity of energy distribution and improved impedance matching

Also Published As

Publication number Publication date
ATE91375T1 (en) 1993-07-15
EP0277342B1 (en) 1993-07-07
EP0277342A2 (en) 1988-08-10
DE3703133A1 (en) 1988-08-11
DE3786451D1 (en) 1993-08-12

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