Electromagnetic heating
AssigneeGoji Limited
InventorsEran Ben-Shmuel, Alexander Bilchinsky
Life of this patent
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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.
Claims28
An apparatus for electromagnetically heating an object in a cavity, the apparatus comprising:
- a plurality of feeds configured to feed UHF (Ultra High Frequency) or microwave energy into the cavity;
- at least one detector configured to measure power coupled between at least two feeds from among the plurality of feeds during a sweep over a plurality of frequencies within a frequency band;
- and
- a controller configured to:
- determine, for each of the plurality of frequencies within the frequency band, a heating efficiency based on the measured power coupled between the at least two feeds from among the plurality of feeds;
- and
- control one or more characteristics of the heating process based on the determined heating efficiency for each of the plurality of frequencies within the frequency band.
A method for electromagnetically heating an object in a cavity, the method comprising:
- feeding UHF (Ultra High Frequency) or microwave energy into the cavity through a plurality of feeds;
- measuring power coupled between at least two feeds from among the plurality of feeds, during a sweep over a plurality of frequencies within a frequency band;
- using a controller to determine, for each of the plurality of frequencies within the frequency band, a heating efficiency based on the measured power coupled between the at least two feeds from among the plurality of feeds;
- and
- controlling one or more characteristics of the heating process based on the determined heating efficiency for each of the plurality of frequencies within the frequency band.
An apparatus for electromagnetically heating an object in a cavity, the apparatus comprising:
- a plurality of antennas configured to feed UHF (Ultra High Frequency) or microwave energy into the cavity at a plurality of frequencies;
- at least one detector configured to measure power coupled between at least two antennas from among the plurality of antennas during a sweep over a plurality of frequencies within a frequency band;
- and
- a controller configured to:
- determine, for each of the plurality of frequencies within the frequency band, the measured power coupled between the at least two antennas from among the plurality of antennas;
- and
- control one or more characteristics of the heating process based on the measured power determined at one or more of the plurality of frequencies within the frequency band.
A method for electromagnetically heating an object in a cavity, the method comprising:
- feeding UHF (Ultra High Frequency) or microwave energy into the cavity at a plurality of frequencies through a plurality of antennas;
- measuring power coupled between at least two of antennas from among the plurality of antennas, during a sweep over a plurality of frequencies within a frequency band;
- using a controller to determine, for each of the plurality of frequencies within the frequency band, the measured power coupled between the at least two antennas from among the plurality of antennas;
- and
- controlling one or more characteristics of the heating process based on the measured power determined at one or more of the plurality of frequencies within the frequency band.
Dependencies are inferred from the claim text.