초록 ▼

The main container of a deep fat fryer has electrical tubular heaters outside the frying fat area and integrated in thermally conductive manner into the walls of a flow circulating shaft and which heat the frying fat in the case of upwardly directed flows through flow channels and consequently keep

The main container of a deep fat fryer has electrical tubular heaters outside the frying fat area and integrated in thermally conductive manner into the walls of a flow circulating shaft and which heat the frying fat in the case of upwardly directed flows through flow channels and consequently keep it in continuous flow circuit by means of a rising flow channel. For temperature regulation purposes is provided a fat temperature sensor which directly taps the fat temperature and also a temperature sensor in the form of a running dry protection means, which taps the temperature directly on the tubular heaters or the associated wall.

대표청구항 ▼

An electric heating device for heating a substance, comprising: a wall to be heated, the wall at least partially defining an area for the substance, the substance being disposed against a first surface of the wall for heating; tubular heating means including a metallic tube with electrical insulatio

An electric heating device for heating a substance, comprising: a wall to be heated, the wall at least partially defining an area for the substance, the substance being disposed against a first surface of the wall for heating; tubular heating means including a metallic tube with electrical insulation and heating resistors therein, the tubular heating means being soldered to a second surface of said wall; a temperature control means having an elongated temperature sensor, said temperature sensor being mounted at said wall on said second surface in direct thermally-conductive contact with said second surface over substantially an entire length of said temperature sensor and closely adjacent to, substantially parallel to, and thermally responsive to at least one of said tubular heating means; and, a heat conducting element thermally conductively connecting said temperature sensor to said second surface of said wall, said heat conducting element enclosing said temperature sensor over at least a part of its circumference, and over substantially its entire length.