Abstract: An electromagnetic induction heating apparatus for heating a fluid includes a tubular insulating member (10) through which the fluid flows, and the tubular insulating member (10) is surrounded by an outer shell member (2, 3) exclusively of its exit-side opening (10e) serving as an exit for the fluid. The outer shell member (2, 3) is provided, at a position nearer to the exit-side opening (10e) than to an inlet-side opening (10i) serving as an inlet for the fluid of the tubular insulating member (10), with an inflow port (3a) through which the fluid flows into the outer shell member (2, 3), an electromagnetic induction coil (25) is wound around an outer periphery of the tubular insulating member (10), and a heating magnetic body (20) is disposed inside the tubular insulating member (10) in a state of forming flow paths. The above arrangement provides a small-type electromagnetic induction heating apparatus with which fluid heating efficiency can be enhanced and a high-pressure fluid can also be heated.

Abstract: An electromagnetic induction heating apparatus for heating a fluid includes a tubular insulating member (10) through which the fluid flows, and the tubular insulating member (10) is surrounded by an outer shell member (2, 3) exclusively of its exit-side opening (10e ) serving as an exit for the fluid. The outer shell member (2, 3) is provided, at a position nearer to the exit-side opening (10e) than to an inlet-side opening (10i) serving as an inlet for the fluid of the tubular insulating member (10), with an inflow port (3a) through which the fluid flows into the outer shell member (2, 3), an electromagnetic induction coil (25) is wound around an outer periphery of the tubular insulating member (10), and a heating magnetic body (20) is disposed inside the tubular insulating member (10) in a state of forming flow paths. The above arrangement provides a small-type electromagnetic induction heating apparatus with which fluid heating efficiency can be enhanced and a high-pressure fluid can also be heated.

Abstract: A small steam generator uses a cylindrical steam generation vessel having a steam generation portion formed to store an amount of water for generating steam and a steam passage portion formed on the upper end of the steam generation portion for spouting steam generated in the steam generation portion. A heater element is disposed within the steam generation vessel, and an induction heating coil is wound around the periphery of the steam generation vessel for energizing the heater element. The heater element is energized by supply of electric power to the heating coil so that steam generated by boiling of the water in the steam generation portion spouts upward from the steam passage.

Abstract: The subject of the present invention is to provide a steam generator constructed small in size. A steam generator 20 of the present invention is composed of a cylindrical steam generation vessel 30 having a steam generation portion 31 formed to store an amount of water for generating steam and a steam passage 32 formed on the upper end of the steam generation portion for spouting steam generated in the steam generation portion, a heater element 40 disposed within the steam generation vessel 30, and an induction heating coil wound around the periphery of the steam generation vessel 30 for energizing the heater element. The heater element 40 is energized by supply of electric power to the heating coil so that steam generated by boiling of the water in the steam generation portion spouts upward from the steam passage.

Abstract: The present invention relates to a temperature controller used for an electromagnetic induction heating apparatus provided with a heating element made of magnetic material, and prepared in a fluid passage. A coil is prepared in the perimeter of the heating element and a high frequency electric current generator for the coil. The temperature controller comprises an electric current detection unit measuring the electric current flowing from the high frequency electric current generator to the coil and detecting that the temperature of magnetic material forming the heating element reaches in the vicinity of the magnetic transformation temperature, and an electric current restrictive unit limiting the electric current flowing to the coil based on the electric current detection unit.

Abstract: This invention pertains to an electromagnetic induction fluid heating apparatus equipped with a heating element constructed from a conductive material installed in a fluid flow passage, a coil installed around this heating element, and a high frequency electrical current generator for this coil. In particular, this heating element is a layered component that allows electrical conduction between metallic plates. This heating element is formed so that electrical current vortices occur throughout this layered component. By forming a fluid flow passage that allows mixing within this layered component, the electrical power efficiency becomes 100%. Moreover, this high frequency electrical current generator is an invertor that uses semiconductor power devices such as SIT, B-SIT, MOSFET, IGRT, and MCT, etc. When the preferred PWM system (Pulse Width Modulation) is used, the heating efficiency (affected by the efficiency of the invertor, etc. matched with this layered component) exceeds 90%.