The carbon ceramic characteristics are (1) increased strength (2) variable electrical resistivity (3) wetting resistance due to lower water absorption (4) oxidation resistance (5) high temperature strength (6) high erosive resistance.

　

Fig.1 System configuration of internal electromagnetic Induction heated appliance

Fig.2 Carbon ceramics as induction heater

　

3. EXTERNAL ELECTROMAGNETIC INDUCTION-BASED FLUID HEATED APPLIANCE

　

Figure 3 shows a schematic total system configuration of the new conceptual external electromagnetic induction eddy current-based continuous fluid (liquids or gasses, vapor, powder) heating appliance, which incorporates active voltage-clamped quasi-resonant ZVS-PWM high-frequency inverter using IGBTS.

　

Fig.3 System configuration of external electromagnetic induction heated appliance

　

This innovative induction heated fluid-heating appliance used for the industrial, chemical, and consumer pipeline system is basically composed of a single-phase diode rectifier with non-smoothing DC capacitor filter link, an active voltage-clamped quasi-resonant ZVS-PWM high-frequency inverter with CFVP function, specially-designed continuous fluid heater, which is made of electromagnetic induction heated type fluid-through thin metallic layer laminated assembly with many spots and mechanically wavelike processed channel slits in mechanically wavelike processed channel slits in order to generate natural fluid turbulence in the pipeline systems as shown in Figure 4. This metal layer package consists of thin conductive and non magnetic metal sheet heating body with a large amount of eddy current-based induction heating surface area, which is incorporated into the high-temperature proof ceramic vessel with water-cooled working coil connected to the high-frequency inverter treated here.

　

Fig.4 Specially-designed metallic laminated assembly to generate turbulence

　

The turbulence fluid flowing through this appliance put tightly into the vessel serves to exchange efficient heat energy into the electromagnetic induction-based fluid heating energy. This continuous moving fluid-heating appliance using high frequency inverter is more suitable for fluid heat energy transfer utilization and storage plants, which is able to be realized as a novel prototype of compact and efficient as heat exchanger and super heated steamer. This fluid heating principle and unique features are cleanliness, compactness, high efficiency, quick temperature response, stable and precise temperature control, excellent controllability in temperature tracking, high reliability, safety and handy on-site fluid heat energy utilization.

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