Global Patent Index - EP 0615400 A3

EP 0615400 A3 19941005 - MICROWAVE OVEN AND METHOD OF DETERMINING FOOD.

Title (en)

MICROWAVE OVEN AND METHOD OF DETERMINING FOOD.

Publication

EP 0615400 A3 19941005 (EN)

Application

EP 94300552 A 19940126

Priority

JP 5051993 A 19930311

Abstract (en)

[origin: EP0615400A2] 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 DELTA A (VA/VAmax) and DELTA G (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- DELTA A)/(1- DELTA G). 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. <IMAGE>

IPC 1-7

H05B 6/68; H05B 6/80

IPC 8 full level

H05B 6/68 (2006.01); H05B 6/80 (2006.01)

CPC (source: EP KR)

H05B 6/6458 (2013.01 - EP); H05B 6/68 (2013.01 - KR)

Citation (search report)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0615400 A2 19940914; EP 0615400 A3 19941005; EP 0615400 B1 20000712; DE 69425168 D1 20000817; KR 940022002 A 19941019

DOCDB simple family (application)

EP 94300552 A 19940126; DE 69425168 T 19940126; KR 19940004728 A 19940311