Method and temperature control arrangement for electrical heating of a food, method for controlling a household appliance and household appliance

摘要

The invention provides a power-saving temperature control arrangement (1000) as well as a method (3000) for the electric heating of food, but heats up the oven at 100% capacity under thermostatic control and later adopts a duty cycle with a duty cycle power control (1200) that corresponds to a load inside of the oven. The load may be determined by means of a scale or input by a user and used to determine the control power value for the duty cycle power control or a temperature-over-time behavior in the form of a linear slope may be determined that will be compared to the behavior of an empty oven in order to determine a load inside the oven and on the basis of the load inquire a table of results of previous experiments to determine a corresponding duty cycle. Also mathematical functions describing the non-linear behavior of the oven in the presence of food may be used in order to determine the proper duty cycle. Plural heating elements (1100, 1110, 1120) can be individually switched and controlled by a multi-cycle power control (8200, 8210, 8220).