Electronic control device for automatic cooking, including learning for home electric oven

• US 4,914,277 A
• Filed: 12/15/1987
• Issued: 04/03/1990
• Est. Priority Date: 10/27/1986
• Status: Expired due to Fees

• Current Assignee: De Dietrich & Cie
• Original Assignee: De Dietrich & Cie
• Inventors: Muller, Paul, Guerin, Jacky, Darigny, Franck
• Primary Examiner(s): PASCHALL, MARK H
• Application Number:
  US07/132,587
• Time in Patent Office: 840 Days
• Field of Search: 219/492, 219/506, 219/494, 219/10.55 B, 99/325, 364/477, 364/900, 364/400, 364/557
• US Class Current: 219/506
• CPC Class Codes: F24C 7/087 of electric circuits regulating heat
• CPC Class Codes: G05D 23/1917 using digital means

Abstract

An electronic control for an electric home oven comprises a microprocessor, a panel of function and memory keys used as a keyboard, a working memory of the microprocessor, a learning memory wherein are stored all the parameters of an experimental cooking as it is being executed, except a second modification too close in time to the first, and a permanent memory, outside or not outside the micrprocessor, into which are selectively transferred during a stop in the course of a cooking, on command of the user or automatically, the parameters contained at a given moment in the learning memory.

Claims

1. Electronic control for an electric home cooking oven comprising a cooking chamber with multiple cooking resistors, comprising base, chamber top, and turbine resistors, capable of being used in combination, characterized by the fact that it comprises:

power supply means for supplying electrical power to said resistors;

a microprocessor for managing the actions of the user on the keys and automatically controlling the application of voltage to the cooking resistors,

a control panel serving as keyboard for the microprocessor comprising keys and light dials of indicators of operation of each key, a display, a GO key and a STOP key, as well as an operation dial indicating the application of voltage to the cooking resistors, the control panel comprising a separate keyboard of memory keys,

a working memory being part of the microprocessor for storing the work parameters and using them as the cooking progresses,

a learning memory contained in the microprocessor for storing all the parameters of an experimental cooking as it is being executed,

a permanent EEPROM memory with several memory positions for selectively storing on command of the user or automatically during a stop in the course of cooking the parameters contained at a given moment in the learning memory.

2. Electronic control for an electric home oven defined in claim 1, wherein the permanent memory is outside the microprocessor.

3. Electronic control for an electric home oven defined in claims 1 and 2, wherein the learning memory of the microprocessor stores all the parameters of an experimental cooking as it is being executed, with the exclusion of the parameters corresponding to the errors of the user.

4. Electronic control for an electric home oven defined in claim 1, wherein if two consecutive modifications occur within a time interval of less than a predetermined value, said electronic control comprises means for ignoring the first modification in the learning memory.

5. Electronic control for an electric home oven defined in claim 4, wherein the time interval between two consecutive modifications is equal to five minutes.

6. Electronic control defined in claim 1, wherein:

the GO key controls the erasure of the learning memory, said learning memory containing solely the parameters of only one cooking;

a recording key controls the loading into the permanent memory of the parameters of the only cooking contained in the learning memory;

a recall key of the learning memory makes it possible to transfer the parameters of the only cooking of the learning memory to the control microprocessor for the operations of the oven.

7. A method for controlling an electric home oven having a control panel connected to a learning memory contained within the memory of a microprocessor and a permanent EEPROM type memory, comprising the steps of:

loading into the learning memory the cooking parameters manually selected by the user to start the learning cooking,

selectively loading into the learning memory the adjustments and modifications performed by the user after starting the cooking,

totaling in the learning memory the parameters resulting from the previous steps, to form the parameters of a recorded cooking, called RECIPE,

selectively recording in the permanent memory the parameters totaled in the learning memory.

8. A method of controlling an electric home oven according to the method of claim 7, comprising the step of:

automatically loading the parameters from the learning memory into the permanent EEPROM memory in the event of power failure with interruption of a cooking,

automatically reloading the previous parameters into the learning memory as soon as the power failure is repaired,

restarting the oven with the parameters reloaded into the learning memory and allowing the cooking to continue from the stage at which it had stopped.

9. A method of controlling an electric home oven, according to claim 8 wherein every adjustment action following another action within a time interval greater than a predetermined value causes an automatic transfer of the previous values of the parameters into the working memory.

10. A method of controlling an electric home oven, according to claim 8 wherein every action on any one key places in the learning memory the parameters of the step which precedes the action.

11. A method of controlling an electric home oven, according to claim 8 wherein one causes the erasure of the learning memory by acting on the GO key, if a cooking is not in the course of execution.

12. A method of controlling an electric home oven, according to claim 8 wherein the learning memory can contain solely the parameters of only one cooking at one time.

13. A method of controlling an electric home oven having a control panel connected to a learning memory in the memory of a microprocessor and a permanent EEPROM memory comprising the steps of:

selecting a recipe recorded in the permanent EEPROM memory to command the oven to automatically re-execute a new cooking according to the parameters of the recorded cooking,

adjusting one or several parameters of the new cooking while it is following its course or after it has completed its course,

selectively memorizing in the learning memory the adjustments which have occurred previously,

totaling in the learning memory the parameters of the recipe and the adjustments, without taking into account a modification followed by another one within a predetermined time interval.