Hand held induction tool with energy delivery scheme
First Claim
1. A heating apparatus, comprising:
- a work coil and an electronic circuit, said electronic circuit, upon a actuation of a cycle, being configured to determine both a current magnitude and a voltage magnitude input to a power converter stage over a plurality of sampled time intervals, then being configured to average said current and voltage magnitudes to calculate a power level being consumed by the power converter stage; and
said electronic circuit being further configured to adjust said power level according to a predetermined energy delivery scheme until achieving a predetermined accumulated energy for said predetermined energy delivery scheme, and terminating said cycle.
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Accused Products
Abstract
An apparatus and system for using magnetic fields to heat magnetically susceptible materials within and/or adjacent to adhesives, resins, or composites so as to reversibly or irreversibly bond, bind, or fasten opaque or non-opaque solid materials to one another. The system makes use of the effect that alternating magnetic fields induce eddy currents and generate heat within susceptors, and the effect that alternating magnetic fields additionally induce magnetic hysteresis that occurs in magnetic materials and thereby generate heat. An induction heating tool is used to emit the magnetic field at its work coil, and an electronic controller measures the energy being used by a power converter that generates the alternating current driving the work coil which creates the magnetic field. The distance between the susceptor and work coil is repeatedly analyzed based upon the power converter'"'"'s input energy, and the work coil is driven at a repeatedly corrected power level during the heating cycle. Once a sufficient accumulated energy has been delivered to the susceptor, the magnetic field is turned off automatically by the tool, thus preventing overheating of the susceptor.
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Citations
31 Claims
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1. A heating apparatus, comprising:
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a work coil and an electronic circuit, said electronic circuit, upon a actuation of a cycle, being configured to determine both a current magnitude and a voltage magnitude input to a power converter stage over a plurality of sampled time intervals, then being configured to average said current and voltage magnitudes to calculate a power level being consumed by the power converter stage; and
said electronic circuit being further configured to adjust said power level according to a predetermined energy delivery scheme until achieving a predetermined accumulated energy for said predetermined energy delivery scheme, and terminating said cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A heating apparatus, comprising:
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a work coil and an electronic circuit, said electronic circuit, upon an actuation of a cycle, being configured to determine both a current magnitude and a voltage magnitude input to a power converter stage over a plurality of sampled time intervals, then being configured to average said current and voltage magnitudes to calculate a power level being consumed by the power converter stage; and
said electronic circuit being further configured to adjust said power level according to a profiled energy delivery scheme for delivering predetermined amounts of energy. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A heating apparatus, comprising:
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a work coil and an electronic circuit, said electronic circuit, upon actuation of a cycle, being configured to determine both a current magnitude and a voltage magnitude input to a power converter stage over a plurality of sampled time intervals, then being configured to average said current and voltage magnitudes to calculate a power level being consumed by the power converter stage; and
said electronic circuit being further configured to adjust said power level according to a profiled energy delivery scheme until achieving a predetermined accumulated energy for said profiled energy delivery scheme, and terminating said cycle. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification