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US 8,941,040 B2Granted
Electromagnetic heating
AssigneeGoji Limited
InventorsEran Ben-Shmuel, Alexander Bilchinsky
Life of this patent
Estimating the term…
Abstract
An electromagnetic heater for heating an irregularly shaped object, including: a cavity within which an object is to be placed; at least one feed which feeds UHF or microwave energy into the cavity; and a controller that controls one or more characteristics of the cavity or energy to assure that the UHF or microwave energy is deposited uniformly in the object within ±30% over at least 80% of the volume of the object.
Claims21
A method of delivering energy to an object in a cavity, the method comprising:
- transmitting an initial amount of electromagnetic energy to the cavity at each of a plurality of frequencies;
- measuring an amount of the transmitted electromagnetic energy absorbed by the object at each of the plurality of frequencies;
- determining, using a controller, input power levels using the measured amounts of the transmitted electromagnetic energy absorbed by the object, wherein one input power level is selected for each of the plurality of frequencies, such that the determined input power levels vary across the plurality of frequencies inversely with respect to the measured amounts of the transmitted electromagnetic energy absorbed by the object;
- and
- delivering electromagnetic energy to the cavity at the determined input power levels, such that for each of the plurality of frequencies, electromagnetic energy is delivered to the cavity at the selected input power level.
2 more elements
An electromagnetic heater for heating an object, comprising:
- a cavity configured to receive the object;
- at least one feed configured to transmit an initial amount of electromagnetic energy at each of a plurality of frequencies to the cavity;
- a measurement device configured to provide an output indicative of an amount of the transmitted electromagnetic energy absorbed in the object at each of the plurality of frequencies;
- and
- a controller configured to:
- determine input power levels using the output of the measurement device, wherein one input power level is selected for each of the plurality of frequencies, such that the determined input power levels vary across the plurality of frequencies inversely with respect to the measured amounts of the transmitted electromagnetic energy absorbed by the object;
- and
- cause to deliver electromagnetic energy to the cavity at the determined input power levels, such that for each of the plurality of frequencies, electromagnetic energy is delivered to the cavity at the selected input power level.
5 more elements
Dependencies are inferred from the claim text.