A sensor assembly for monitoring a heater system for an aircraft probe sensor includes a current sensor module with a current sensor core and a high electromagnetically permeable enclosure around the current sensor core. An input wire pathway extends through the current sensor core and is configured to receive a heater input wire. A return wire pathway extends through the current sensor core and is configured to receive a heater return wire. A high electromagnetically permeable tube extends through the current sensor core and is configured to extend around one of the input wire and the heater return wire.

A heating device includes a heating roller having a resistance heat-generating layer that generates heat by passage of a current through the resistance heat-generating layer, a pressure rotating body that rotates in such a manner as to press a sheet-shaped heating target that is an object to be subjected to a heating treatment against an outer peripheral surface of the heating roller and in such a manner as to cause the heating target to pass through the outer peripheral surface of the heating roller, and an auxiliary heating unit that supplementarily heats at least an axial end region included in a heat-generating region in which heat is generated by the resistance heat-generating layer of the heating roller.

The present invention provides a cabinet (10) for the temporary storage of a heated food item. The cabinet (10) has a in base (12), a top (14) and opposing sides (16,18). The base (12), top (14) and opposing sides (16,18) define an interior space (20) of the cabinet (10) which is accessible through opposing apertures (22, 24) at each end of the cabinet (10). The cabinet (10) is provided with air movement means and air heating means operable to draw air from the interior space (20) of the cabinet (10), heat said air and utilise a portion of said heated air to produce air curtains across the opposing apertures (22, 24) of the cabinet (10). The remainder of said air is circulated within the interior space (20) of the cabinet (10).

The invention relates to a method for operating a heating element (210), in particular in a food processor (1) for the at least partially automatic preparation of foodstuffs, wherein the following steps are performed: a) detecting an electrical resistance of the heating element (210) such that at least one resistance value is determined, b) performing a heating operation on the heating element (210) based on the at least one determined resistance value to perform the heating operation depending on a temperature of the heating element (210).

An ohmic heater for heating a food product, including: a rectifier (2) for rectifying the supply voltage; an inverter (3) including controlled switches (30); a pair (4) of electrodes that can be positioned in contact with the food product to be heated, said inverter (3) being operatively interposed between the rectifier (2) and the pair (4) of electrodes; a device (5) for determining an oscillating voltage (X) generated by the rectifier (2); a system (800) for regulating the closing duration of the switches (30) of the inverter (3) at least as a function of the corresponding voltage (X) generated by the rectifier (2) and determined at a given time instant by the device (5) for determining an oscillating voltage (X).

A cooking appliance includes a housing having a cooking compartment, which is surrounded by a bottom surface, a pair of side surfaces, and a back surface of the housing, and has an upper surface and a front surface which are open. A door includes a door upper surface part which covers the upper surface of the housing and a door front surface part which is connected to a front side of the door upper surface part and covers the front surface of the housing and opens and closes the upper surface and the front surface of the housing by rotating about a rear side of the door upper surface part. A heating part is installed in at least one of the housing or the door.

A novel method of deicing utilizing a fins-on-tubes type evaporator/heat exchanger system that is optimized for energy-saving inductive heating thereof, by configuring it to increase its resistance to a value at which the system's reactance at its working frequency is comparable to its electrical resistance. The system includes a set of tubes configured for flow of cooling material therethrough, and also includes a set of fins positioned and disposed perpendicular to, and along, the tubes, in such a way that at least a portion of the fins comprises longitudinal excisions therein.

A system for determining a health status of a positive temperature coefficient resistor (PTCR) heater assembly includes a PTCR heater assembly and a health monitoring system. An input voltage is provided to the PTCR heater assembly to provide heating. The health monitoring system includes a first sensor configured to sense the input voltage at the PTCR heater assembly and a second sensor configured to sense a current through the PTCR heater assembly. The health monitoring system is configured to determine a baseline characteristic and an observed characteristic each relating to an inrush peak of the PTCR heater assembly and based on the input voltage and the current. The health monitoring system compares the observed characteristic to the baseline characteristic to assess a health status of the PTCR heater assembly and outputs the health status for PTCR heater assembly diagnostics and/or prognostics.

The device includes at least the following components: a heating resistor intended for heating a component to be regenerated; a current source; a thermistor connected to the current source and thermally coupled to the heating resistor, the thermistor, through which the current flows, having a voltage Vtemp across its terminals, which voltage reflects the temperature of the heating resistor; an error amplifier, which amplifies the difference between the voltage Vset and the voltage Vtemp and delivers a voltage Vctrl that corresponds to the amplified difference; a switch, which switches the current flowing through the heating resistor; an oscillator, which delivers a voltage Vosc formed with a modulated duty cycle, the duty cycle of the pulses of the voltage Vosc being dependent on the voltage Vctrl, the pulses controlling the opening of the switch.

A heating light source device includes a light source section having a plurality of light-emitting element areas that contain a plurality of light-emitting elements, each of the light-emitting element areas being separated from each other; a cooling unit disposed in contact with the light source section; a plurality of cooling channels formed inside the cooling unit and disposed independently each other; a first main channel connected with one end of each of the cooling channels; and a second main channel connected with the other end of each of the cooling channels, and each of the cooling channels is formed at an internal position of the cooling unit corresponding to the light-emitting element areas.