EP0615400A3 - Microwave oven and method of determining food - Google Patents

Microwave oven and method of determining food Download PDF

Info

Publication number
EP0615400A3
EP0615400A3 EP9494300552A EP94300552A EP0615400A3 EP 0615400 A3 EP0615400 A3 EP 0615400A3 EP 9494300552 A EP9494300552 A EP 9494300552A EP 94300552 A EP94300552 A EP 94300552A EP 0615400 A3 EP0615400 A3 EP 0615400A3
Authority
EP
European Patent Office
Prior art keywords
food
alcohol
steam
heating
gmax
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
EP9494300552A
Other languages
German (de)
French (fr)
Other versions
EP0615400B1 (en
EP0615400A2 (en
Inventor
Yukio C/O Aichi Works K. K. Toshiba Suzuki
Reiko C/O Aichi Works K. K. Toshiba Kawaguchi
Minoru C/O Aichi Works K. K. Toshiba Takagi
Mika C/O Aichi Works K. K. Toshiba Morita
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 JP5051993A external-priority patent/JPH0658894A/en
Application filed by Toshiba Corp filed Critical Toshiba Corp
Publication of EP0615400A2 publication Critical patent/EP0615400A2/en
Publication of EP0615400A3 publication Critical patent/EP0615400A3/en
Application granted granted Critical
Publication of EP0615400B1 publication Critical patent/EP0615400B1/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
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
    • H05B6/6458—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using humidity or vapor sensors
    • 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
    • H05B6/66—Circuits
    • H05B6/68—Circuits for monitoring or control

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)

Abstract

Gaseous alcohol and steam emanating from food being heated are detected by an alcohol sensor (11) and a steam sensor (12) respectively. A control circuit (16) obtains maximum values VAmax and VGmax serving as reference values from detection voltages generated by the alcohol and steam sensors (11, 12). Change rates ΔA (VA/VAmax) and ΔG (VG/VGmax) are obtained on the basis of detection voltages VA and VG detected a predetermined time (40 seconds, for example) after initiation of the heating and a ratio r of the change rates is obtained from the expression, r=(1-ΔA)/(1-ΔG) . The control circuit (16) compares a value of the ratio r with a threshold set for each kind of food to discriminate the kind of the food, thereby setting a subsequent heating time to execute the heating. Since the ratios r vary largely depending upon presence of an alcoholic component contained in the food, the kind of the food can be reliably discriminated.
EP94300552A 1993-03-11 1994-01-26 Microwave oven and method of determining food Expired - Lifetime EP0615400B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP5051993A JPH0658894A (en) 1992-05-27 1993-03-11 Microwave oven
JP5051993 1993-03-11
JP50519/93 1993-03-11

Publications (3)

Publication Number Publication Date
EP0615400A2 EP0615400A2 (en) 1994-09-14
EP0615400A3 true EP0615400A3 (en) 1994-10-05
EP0615400B1 EP0615400B1 (en) 2000-07-12

Family

ID=12861229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94300552A Expired - Lifetime EP0615400B1 (en) 1993-03-11 1994-01-26 Microwave oven and method of determining food

Country Status (3)

Country Link
EP (1) EP0615400B1 (en)
KR (1) KR940022002A (en)
DE (1) DE69425168D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2293027A (en) * 1994-09-07 1996-03-13 Sharp Kk Apparatus for and method of controlling a microwave oven
DE10327861B4 (en) * 2003-06-18 2006-05-11 Miele & Cie. Kg Method for controlling a cooking process in a cooking appliance and cooking appliance
KR102327881B1 (en) * 2015-01-28 2021-11-18 삼성전자주식회사 Gas detecting apparatus, cooking apparatus and controlling method thereof
US10009965B2 (en) 2015-01-28 2018-06-26 Samsung Electronics Co., Ltd. Gas detection apparatus, cooking apparatus, and method of controlling the apparatuses

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000957A1 (en) * 1977-08-30 1979-03-07 Litton Systems, Inc. Humidity controlled microwave oven and method of cooking
JPS55146329A (en) * 1979-04-28 1980-11-14 Sharp Corp Cooking system
FR2509108A1 (en) * 1981-07-06 1983-01-07 Sharp Kk MICROPROCESSOR MICROWAVE HEATING APPARATUS
EP0074764A1 (en) * 1981-09-03 1983-03-23 Sharp Kabushiki Kaisha Apparatus for heating foodstuff
DE3205124A1 (en) * 1982-02-12 1983-08-18 Licentia Gmbh Device and method for automatic cooking of foods in a microwave appliance
JPS62123226A (en) * 1985-11-22 1987-06-04 Toshiba Corp High-frequency heating cooker
EP0238022A2 (en) * 1986-03-20 1987-09-23 Matsushita Electric Industrial Co., Ltd. Heating apparatus
JPH03170726A (en) * 1989-11-30 1991-07-24 Toshiba Corp Microwave oven

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000957A1 (en) * 1977-08-30 1979-03-07 Litton Systems, Inc. Humidity controlled microwave oven and method of cooking
JPS55146329A (en) * 1979-04-28 1980-11-14 Sharp Corp Cooking system
FR2509108A1 (en) * 1981-07-06 1983-01-07 Sharp Kk MICROPROCESSOR MICROWAVE HEATING APPARATUS
EP0074764A1 (en) * 1981-09-03 1983-03-23 Sharp Kabushiki Kaisha Apparatus for heating foodstuff
DE3205124A1 (en) * 1982-02-12 1983-08-18 Licentia Gmbh Device and method for automatic cooking of foods in a microwave appliance
JPS62123226A (en) * 1985-11-22 1987-06-04 Toshiba Corp High-frequency heating cooker
EP0238022A2 (en) * 1986-03-20 1987-09-23 Matsushita Electric Industrial Co., Ltd. Heating apparatus
JPH03170726A (en) * 1989-11-30 1991-07-24 Toshiba Corp Microwave oven

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 344 (M - 640) 11 November 1987 (1987-11-11) *
PATENT ABSTRACTS OF JAPAN vol. 15, no. 411 (M - 1170) 21 October 1991 (1991-10-21) *
PATENT ABSTRACTS OF JAPAN vol. 5, no. 18 (M - 053) 3 February 1981 (1981-02-03) *

Also Published As

Publication number Publication date
EP0615400B1 (en) 2000-07-12
DE69425168D1 (en) 2000-08-17
KR940022002A (en) 1994-10-19
EP0615400A2 (en) 1994-09-14

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