Back to results
US 2013/0200069 A1Published application
Control method for an induction cooking appliance
AssigneeGeneral Electric Company
InventorsJohn Michael Kulp, JR., Gregory Francis Gawron, SR., Daniel Vincent Brosnan, Mingwei Shan
Life of this patent
Estimating the term…
Abstract
A system and method of controlling an induction cooking appliance based on a feedback signal. A feedback signal sampling time interval may be triggered when a power control signal has a magnitude of zero. The feedback signal sample may be used to calculate a status factor and the appliance may be controlled based on the calculated status factor.
Claims20
A method of controlling an induction cooking appliance, comprising:
- supplying a high frequency signal to a coil of the induction cooking appliance;
- detecting a power signal frequency;
- initiating a timer for a time interval when the frequency of the power signal has a magnitude of zero;
- sampling a signal across a shunt resistor after the time interval;
- and
- calculating at least one of a plurality of status factors based on the shunt resistor signal sample.
3 more elements
An induction cooking appliance, comprising:
- a power supply providing a power signal having a frequency;
- an inverter coupled to the power supply;
- a coil coupled to said inverter, wherein said inverter provides a high frequency signal to said coil;
- a shunt resistor coupled to said coil;
- and
- a controller coupled to the power supply and configured to initiate a timer for a time interval when the frequency of the power signal has a magnitude of zero,
- sample a signal across the shunt resistor after the time interval, and
- calculate at least one of a plurality of status factors based on the shunt resistor signal sample.
5 more elements
Dependencies are inferred from the claim text.