Abstract: The heating cooker includes a first heater disposed below a tray to heat the tray, and second heater disposed over the tray to heat the tray. In addition, the heating cooker includes a controller that controls output of the first heater and switches energization of second heater in accordance with a kind of object to be heated and a quantity of object to be heated. Furthermore, second heater includes two plane-shaped insulators and a plurality of planar heat generators that are sandwiched between insulators, and the controller heats regions that are disposed over and below the tray to be opposed to each other by controlling energization of the first heater and second heater. Furthermore, second heater has a distortion suppressor between the plurality of planar heat generators, and the distortion suppressor suppresses internal distortion of insulators caused by heating of the plurality of planar heat generators of second heater.

Abstract: A microwave heating apparatus includes: a heating chamber which houses a heating object; a microwave generating unit which generates a microwave; a transmitting unit which transmits the microwave generated by the microwave generating unit; a waveguide-structure antenna which radiates to the heating chamber the microwave transmitted from the transmitting unit; and a rotation driving unit which drives the waveguide-structure antenna to rotate, wherein the waveguide-structure antenna has a microwave sucking-out opening in a wall surface forming a waveguide structure of the waveguide-structure antenna.

Abstract: The heating cooker includes a first heater disposed below a tray to heat the tray, and second heater disposed over the tray to heat the tray. In addition, the heating cooker includes a controller that controls output of the first heater and switches energization of second heater in accordance with a kind of object to be heated and a quantity of object to be heated. Furthermore, second heater includes two plane-shaped insulators and a plurality of planar heat generators that are sandwiched between insulators, and the controller heats regions that are disposed over and below the tray to be opposed to each other by controlling energization of the first heater and second heater. Furthermore, second heater has a distortion suppressor between the plurality of planar heat generators, and the distortion suppressor suppresses internal distortion of insulators caused by heating of the plurality of planar heat generators of second heater.

Abstract: A microwave processing device includes: a periodic structure body which forms a surface-wave transmission line to transmit surface waves of microwaves; an oscillator which generates microwave power; and a transmitting part which transmits the microwave power generated by the oscillator to the periodic structure body, wherein a matching part is provided at a connecting portion between the periodic structure body and the transmitting part, and an impedance of the matching part is set to a value between an impedance of the periodic structure body and an impedance of the transmitting part.

Abstract: A microwave heating apparatus includes: a heating chamber which houses a heating object; a microwave generating unit which generates a microwave; a transmitting unit which transmits the microwave generated by the microwave generating unit; a waveguide-structure antenna which radiates to the heating chamber the microwave transmitted from the transmitting unit; and a rotation driving unit which drives the waveguide-structure antenna to rotate, wherein the waveguide-structure antenna has a microwave sucking-out opening in a wall surface forming a waveguide structure of the waveguide-structure antenna.

Abstract: A microwave processing device includes: a periodic structure body which forms a surface-wave transmission line to transmit surface waves of microwaves; an oscillator which generates microwave power; and a transmitting part which transmits the microwave power generated by the oscillator to the periodic structure body, wherein a matching part is provided at a connecting portion between the periodic structure body and the transmitting part, and an impedance of the matching part is set to a value between an impedance of the periodic structure body and an impedance of the transmitting part.

Abstract: An electric vacuum cleaner includes electric blower for generating a suction force; dust separating unit, installed on an upstream side of the electric blower, for separating dust from air containing the dust suctioned by electric blower; dust collecting chamber for accumulating the dust separated by dust separating unit opened to dust collecting chamber; and humidifying unit, communicating to humidifying port, for generating air of high humidity; wherein humidifying unit supplies the air of high humidity from humidifying port to the dust accumulated in dust collecting chamber.

Abstract: A drying device in accordance with the invention is characterized by including: an air blowing portion for blowing pressurized air so as to dry a surface to be dried by a jet of pressurized air whose abutment area to the surface to be dried is narrower than the surface to be dried; and a moving unit for moving the air blowing portion while the jet is being blown such that the jet blown from the air blowing portion sequentially sweeps a substantially entire surface of the surface to be dried, wherein the moving unit includes a first moving device for moving the air blowing portion in a state in which a blowing direction of the jet is being maintained so as to form a predetermined angle with respect to a moving direction of the air blowing portion and a second moving device for moving the air blowing portion in a direction different from that of the moving direction.

Abstract: A microwave heating apparatus includes a heating chamber 3 for accommodating an item 2 to be heated; a microwave generator 11 for radiating microwaves to the heating chamber 3, and a vapor generator 12 for supplying vapor to the heating chamber 3. The heating chamber 3 includes regenerating plates 28a and 28b for generating and regenerating heat when radiated by the microwaves from the microwave generator 11, thereby reducing dew condensation caused by the vapor in the heating chamber 3.

Abstract: A steam generating apparatus includes a chamber defining structure for defining a heating chamber for heating a fluid medium such as liquid and/or air; an exciting coil mounted on the chamber defining structure so as to surround the heating chamber and operable, when electrically energized by application of an alternating current power thereto, to produce an alternating magnetic field; a porous heating element disposed within the heating chamber, said porous heating element having a high porosity and adapted to be heated by an induction current developed by the alternating magnetic field produced by the exciting coil; and a liquid supply system for supplying a liquid medium to the heating chamber to allow the liquid medium to be heated in contact with the porous heating element to thereby produce steam.