Method for controlling a cooking process, and cooking appliance
View Patent ↗A cooking appliance and a method of controlling the cooking process in the cooking appliance. The cooking appliance includes a heating device, especially for grilling. To improve the browning process of food in the cooking appliance the radiation time of the cooking appliance is increased. The time is increased by a temporary cooling-down phase where the temperature is reduced, that is initiated by opening the cooking appliance door, for example, to turn the food being browned. The cooking appliance then increases the temperature again over a subsequent heating-up phase initiated by closing the cooking appliance door.
1. A method for controlling a cooking process in a closed cooking compartment of a cooking appliance, comprising:
a heating device for heating the cooking compartment, said heating device being operable to apply radiant heat to an item in said cooking compartment;
the temperature in said cooking compartment is set to a desired heating temperature (TG) for the food in a cooking process;
said heating device is switched on and off in a temperature regulating cycle once a pre-determined switching temperature has been reached in said cooking compartment during said cooking process to thereby ensure that the temperature in said cooking compartment is between an upper limit cooking temperature and a lower limit cooking temperature;
the temperature during said cooking process is then reduced from a predetermined temperature below the upper cooking limit temperature over the course of a temporary cooling-down phase (tA) in said cooking compartment such that the temperature in said cooking compartment eventually decreases below the lower limit cooking temperature; and
the temperature during said cooking process then is increased again during a subsequent heating-up phase (tVS) in said cooking compartment to raise the temperature in said cooking compartment from a temperature below the lower limit cooking temperature to a temperature between the upper limit cooking temperature and the lower limit cooking temperature.
2. The method according to claim 1 , including said temporary cooling-down phase (tA) is brought about by an unscheduled switch-off of said heating device relative to said regulating cycle.
3. The method according to claim 2 , including said heating device is switched off when opening said cooking compartment.
4. The method according to claim 1 , including said temporary cooling-down phase (tA) is introduced shortly before reaching said cooking temperature (TG).
5. The method according to claim 1 , including said temporary cooling-down phase (tA) is introduced when said food is turned.
6. The method according to claim 5 , including said heating device is switched off when opening said cooking compartment to turn said food introducing said temporary cooling-down phase (tA).
7. A cooking device, comprising:
a cooking compartment in which an item can be placed to be heated;
a heating device for heating an item that has been placed in said cooking compartment, said heating device being operable to apply radiant heat to the item;
a door for accessing said cooking compartment, said door being movable between an open position in which access can be had to said cooking compartment and a closed position in which access to said cooking compartment is prevented;
a temperature sensor for sensing the temperature in said cooking compartment; and
a control assembly operatively connected to said temperature sensor and operable to cyclically turn on said heating device and turn off said heating device to thereby ensure that the temperature in said cooking compartment is between an upper limit cooking temperature and a lower limit cooking temperature, said control assembly being operable, when the temperature in said cooking compartment eventually decreases along a path of increasingly lower temperatures as a result of said heating device being in a turned off condition, to turn on again said heating device during such a decrease of the temperature in said cooking compartment along a path of increasing lower temperatures before the temperature in said cooking compartment decreases below the lower limit cooking temperature, said control assembly controlling the turning on and the turning off of said heating device in a cyclic manner to thereby ensure that the temperature in said cooking compartment is between the upper limit cooking temperature and the lower limit cooking temperature, and said control assembly being operable to turn off said heating element upon the occurrence of a predetermined temperature below the upper cooking limit temperature, said control assembly being operable, during a temporary cooling-down phase (tA), to maintain said heating element in a turned off status following an occurrence of a predetermined temperature below the upper cooking limit temperature such that the temperature in said cooking compartment eventually decreases below the lower limit cooking temperature, and said control assembly being operable to substantially continuously maintain said heating element in its turned on condition during a subsequent heating-up phase (tVS) following a temporary cooling-down phase (tA) to raise the temperature in said cooking compartment from a temperature below the lower limit cooking temperature to a temperature between the upper limit cooking temperature and the lower limit cooking temperature.
8. The cooking device according to claim 7 , including a switching contact engageable and activated by said door in at least one of an open or a closed position, said switching contact being operatively connected to said control assembly and said control assembly being operable, when said heating element has already been in a turned on condition during a cooking process and said switching contact has indicated that said door has been opened, to maintain said heating element in a turned off status in a predetermined heating element turn-off event such that during a temporary cooling-down phase (tA) ensures and the temperature in said cooking compartment eventually decreases below the lower limit cooking temperature.
9. The device according to claim 7 , including a switching contact engageable and activated by said door in at least one of an open or a closed position, said switching contact being operatively connected to said control assembly and said control assembly being operable, in response to a signal from said switching contact that said door has been closed after said heating element has already been in a turned on condition during a cooking process and said switching contact has already indicated that said door has been opened and a temporary cooling-down phase (tA) has elapsed, to substantially continuously maintain said heating element in its turned on condition during a heating-up phase (tVS) to raise the temperature in said cooking compartment from a temperature below the lower limit cooking temperature to a temperature between the upper limit cooking temperature and the lower limit cooking temperature.