A method for electrically predrying a moist blank of a ceramic raw mixture is provided, the blank being connected into a circuit and an alternating current being passed through the blank. In this case, the alternating current is passed through the blank at an increased frequency in comparison with the mains frequency. Significantly less electrical energy is required to achieve an identical drying result.

A method for electrically predrying a moist blank of a ceramic raw mixture is provided, the blank being connected into a circuit and an alternating current being passed through the blank. In this case, the alternating current is passed through the blank at an increased frequency in comparison with the mains frequency. Significantly less electrical energy is required to achieve an identical drying result.

A bath water heating device for use in a small water environment, such as a bathtub or the like, that is operable to maintain water in the small water environment at a desired temperature. The device may filter water as it is pumped through the device. Additionally or alternatively, the device may provide ambient relaxation and/or entertainment content to a user, such as a bather or the like. The device may be wirelessly connectable to external input/output devices.

A bath water heating device for use in a small water environment, such as a bathtub or the like, that is operable to maintain water in the small water environment at a desired temperature. The device may filter water as it is pumped through the device. Additionally or alternatively, the device may provide ambient relaxation and/or entertainment content to a user, such as a bather or the like. The device may be wirelessly connectable to external input/output devices.

A boiler, including: electrodes immersed in contained water, for heating thereof; and a separating circuit, for supplying electric power from an electric grid supply to the electrodes therethrough in an electric separated manner, thereby the water electrified by the electrodes is electrically separated from the electric grid supply, thereby providing safety.

A boiler, including: electrodes immersed in contained water, for heating thereof; and a separating circuit, for supplying electric power from an electric grid supply to the electrodes therethrough in an electric separated manner, thereby the water electrified by the electrodes is electrically separated from the electric grid supply, thereby providing safety.

Problem to be Solved

To provide a heat-generating device capable of efficiently maintaining heat generation for a long time at a low cost while saving power.

Solution

The heat-generating device includes: a hollow vessel having an electrically insulated inner part; a pair of counter electrodes housed inside the vessel, and separated from and opposing each other; and a heat-generating body housed between the counter electrodes inside the vessel, and composed of silicon powder and carbon powder in a mixed state.

Problem to be Solved

To provide a heat-generating device capable of efficiently maintaining heat generation for a long time at a low cost while saving power.

Solution

The heat-generating device includes: a hollow vessel having an electrically insulated inner part; a pair of counter electrodes housed inside the vessel, and separated from and opposing each other; and a heat-generating body housed between the counter electrodes inside the vessel, and composed of silicon powder and carbon powder in a mixed state.

A liquid heater such as a direct electrical resistance liquid heater having multiple flow channels is provided with a temperature-sensing element in the form of a wire extending across numerous channels, preferably all of the channels, near the downstream ends of the channels. The resistance of the wire represents the average temperature of the liquid passing through all of the channels, and hence the temperature of the mixed liquid exiting from the heater. A bubble suppressing structure is provided in the vicinity of the wire.

The present disclosure relates to a home appliance. The home appliance includes a dispensing port, a heating flow path part communicating with the dispensing port, a heating device for heating water flowing through the heating flow path part, and a controller controlling the heating device. The heating device includes a coil part in which coils are stacked in multilayers.