EP0209201A1
Expired / Lapsed
EP
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A method for heating in oven and microwave oven utilizing the method
Assignee: Whirlpool Europe BV
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Filing: 1986-07-15
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Granted: —
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Expires: 2006-07-15
Abstract
Abstract The invention relates to a method for automatic heating of food in an oven (A) by feeding back at least one control parameter, representing the condition of the food during the heating to a control device (F, C) for the energy source (B), and a microwave oven which utilizes the method. According to the invention a scale (D) is used to measure the weight of the food continuously or intermittently during the heating. By means of the weight indicating signal from the scale (D) the weight decrease and/or the weight decrease rate is determined, which parameters are then used as control parameters together with the initial weight in the automatic heating process.
Inventors
- 👤 Per Olov Gustav Risman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 07:27
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/6447; H05B6/6464
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
90 words
A method for heating food in oven, in which energy is fed into an oven space, where the food is placed, and at least one signal representing at least one parameter at the heating being is fed back to a control device for the energy source for influencing the heating procedure, for example as regards power level and remaining processing time, in an automatic heating process, characterized in that the weight decrease of the food during the heating is determined and used as control parameter in the automatic heating process.
Claim 2
Independent Claim
90 words
A method for heating food in oven, in which energy is fed into an oven space, where the food is placed, and at least one signal representing at least one parameter at the heating being is fed back to a control device for the energy source for influencing the heating procedure, for example as regards power level and remaining processing time, in an automatic heating process, characterized in that the weight decrease of the food during the heating is determined and used as control parameter in the automatic heating process.
Claim 3
Dependent Claim
32 words
A metod as claimed in the Claim 1, characterized in that the initial weight of the food is measured and used in combination with the weight decrease for controlling the automatic process.
Claim 4
Dependent Claim
32 words
A method as claimed in the Claim 1 or 2, characterized in that the time until a given absolute or relative weight decrease has occured is determined and used as control parameter.
Claim 5
Dependent Claim
31 words
A method as claimed in the Claim 1 or 2, characterized in that the instantaneous weight decrease rate, i.e. weight decrease per time unit, is determined and used as control parameter.
Claim 6
Dependent Claim
35 words
A method as claimed in the Claim 4, characterized in that the time until a given instantaneous weight decrease rate has been reached is determined and used as a measure of the weight decrease rate
Claim 7
Independent Claim
34 words
A method as claimed in any of the Claims 1-5, characterized in that the absolute or relative weight decrease is used in combination with the weight decrease rate for controlling the automatic heating process.
Claim 8
Independent Claim
54 words
A method as claimed in any of the Claims 1-6, characterized in that the intended process type (defrosting, re-heating, cooking) can be selected by the user and that this selection is used in combination with measured weight decrease or weight decrease rate in a pre-programmed final processing algorithm with the initial weight as variable.
Claim 9
Dependent Claim
136 words
A microwave oven for effecting the method as claimed in any of the Claims 1-7 comprising an oven cavity for accomodating the food to be heated and a microwave source for feeding microwave energy into the cavity, characterized by a weighing device which consecutively (continously or intermittently) measures the weight of the food introduced into the oven cavity and delivers a signal representing this weight, an analogue-to-digital converter for converting the weight indicating signal to a digital magnitude and a control device for the microwave source, to which the signal from the analogue-to-digital converter is fed and which is adapted to influence the heating processing as regards power level and/or the remaining process time in dependence on parameters derived from the said weight indicating signal and representing weight decrease or weight decrease rate and initial weight.
Claim 10
Dependent Claim
54 words
A microwave oven as claimed in the Claim 8, characterized in that it is furthermore has a keyboard for setting of desired process type (defrosting, re-heating, cooking), the setting of the keyboard influencing the control device to produce desired final heating in combination with measured weight decrease or weight decrease rate and initial weight.
References Cited (Backward Citations)
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