Cooker

A cooker for cooking food items in a cooking medium, said cooker comprising

• heating means for heating said cooking medium to within a predetermined range,
• temperature detecting means for detecting temperature of said cooking medium,
• temperature control means for controlling said heating means to start and stop heating based on the temperature of said cooking medium detected by said temperature detecting means so as to maintain said cooking medium within said predetermined temperature range,
• temperature change detecting means for detecting a temperature decrease per unit time in said cooking medium,
• instruction means for outputting a first control signal to said heating means to start forcible heating of said cooking medium irrespective of the temperature of said cooking medium as detected by said temperature detecting means when said temperature decrease per unit time detected by said temperature change detecting means becomes equal to or greater than a predetermined first limit, and
• temperature control resumption means connected with said temperature control means and with said instruction means for producing a second control signal in response to the temperature of said cooking medium to stop forcible heating and start heating based on the temperature of said cooking medium.

In a cooker for cooking food items in a cooking medium, said cooker including

• heating means for heating said cooking medium to within a predetermined temperature range,
• temperature detecting means for detecting temperature of said cooking, and
• temperature control means for controlling said heating means to start and stop heating based on the temperature of said cooking medium detected by said temperature detecting means so as to maintain said cooking medium in a predetermined temperature range,
• the further improvement comprising
• forcible heating control means for controlling said heating means to start forcible heating irrespective of the temperature of said cooking medium detected by said temperature detecting means, and
• temperature control resumption means connected with said temperature control means and with said forcible heating control means for producing a signal in response to the temperature of said cooking medium to stop forcible heating and start heating based on the temperature of said cooking medium.

In a cooker for cooking food items in a cooking medium including

• heating means for heating said cooking medium to within a predetermined temperature range,
• temperature detecting means for detecting temperature of said cooking medium, and
• temperature control means for controlling said heating means to start and stop heating based on the temperature of said cooking medium detected by said temperature detecting means so as to maintain said cooking medium in a predetermined temperature range, the further improvement comprising
• A. temperature change detecting means for detecting a temperature decrease per unit time in said cooking medium,
• B. instruction means for outputting a first control signal to said heating means to start forcible heating irrespective of the temperature of said medium detected by said temperature detecting means when said temperature decrease per unit time detected by said temperature change detecting means becomes equal to or greater than a predetermined first limit, and
• temperature control resumption means connected with said temperature control means and with said instruction means for producing a second control signal in response to the temperature of said cooking medium to stop forcible heating and start heating based on the temperature of said cooking medium.

In a fryer apparatus for deep frying food items in cooking oil, said fryer apparatus having a frypot filled with said cooking oil, a pulse combustor for heating said cooking oil in said frypot, a temperature sensor for detecting temperature of said cooking oil, and a combustion controlling unit for controlling said pulse combustor,

• said combustion controlling unit further having the improvement comprising
• A. temperature control means for controlling said pulse combustor to start and stop combustion based on the temperature of said cooking oil detected by said temperature sensor so as to maintain said cooking oil in a predetermined temperature range,
• B. forcible combustion control means for controlling said pulse combustor to start forcible combustion irrespective of the temperature of said cooking oil detected by said temperature sensor, and
• C. temperature control resumption means connected with said temperature control means and with said forcible combustion control means for producing a signal in response to the temperature of said cooking oil to stop forcible combustion and start combustion based on the temperature of said cooking oil.