Dielectric heating using inductive coupling
AssigneeHeatWave Drying Systems Ltd.
InventorsGlenn Craig Blaker, Terry Albert Enegren
Life of this patent
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Abstract
A method and apparatus for heating or drying material by applying radio frequency (RF) power to a material in a resonant cavity; wherein an RF power source is inductively coupled to a resonant cavity formed by distributed inductance in resonance with the applicator and material where the magnetic field established by the feed line(s) induces a voltage on the applicator permitting feed line voltages delivering said RF power to the cavity to be lower than those that would normally be encountered for equivalent RF heating using direct coupling.
Claims8
A radio frequency heating system comprising a grounded conductive chamber having chamber walls, an applicator inside the chamber, means coupling said applicator to a source of radio frequency power, a distributed inductance means having a pair of distributed inductance sections one of said distributed inductance sections connecting one side of said applicator to its adjacent chamber wall and another of said pair of distributed inductance sections connecting a side of said applicator remote from said one side to its adjacent chamber wall, and the resulting resonant cavity tuned to a specific radio frequency.
Dependencies are inferred from the claim text.