Heating systems and methods utilizing high frequency harmonics
AssigneeiTherm Technologies, LP
InventorValery Kagan
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Abstract
Heating systems and methods for inductive heating or a combination of resistive and inductive heating. A heater coil is inductively coupled to an article and a current signal is supplied to the heater coil. The heater coil generates a magnetic flux, based on the applied current signal, for inductively heating the article. Current pulses of a certain profile are used to enhance the rate, intensity and/or power of inductive heating delivered by the heating element or coil and/or to enhance the lifetime or reduce the cost of the inductive heating system.
Claims37
An apparatus comprising:
- a heater coil for inductive heating;
- and
- a power source for supplying to the heater coil non-sinusoidal current pulses having steeply varying portions providing at least 50% pulse energy in high frequency harmonics in the heater coil, wherein the heater coil generates a magnetic flux for inductive heating of an article.
A method of supplying current to a heater coil of a heating apparatus for inductive heating, the method comprising:
- supplying to the heater coil non-sinusoidal current pulses having steeply varying portions providing at least 50% pulse energy in high frequency harmonics in the heater coil, wherein the heater coil generates a magnetic flux for inductive heating of an article.
Dependencies are inferred from the claim text.