MICROWAVE HEATING APPARATUS
First Claim
1. A microwave heating apparatus comprising:
- a cavity arranged to receive a load;
a plurality of feeding ports configured to feed a plurality of microwaves from a plurality of microwave generators to said cavity, the microwaves generated by at least one of the plurality of microwave generator and fed to the cavity providing a mode field in the cavity; and
a control unit configured to;
obtain a desired temperature pattern within said cavity based on information about a plurality of regions of said load,determine a heating pattern comprising zones of different intensities corresponding to said desired temperature pattern, wherein a zone of higher intensity in the determined heating pattern corresponds to a region of higher temperature in the desired temperature pattern; and
control at least some of said plurality of microwave generators for combining mode fields provided by said at least some of said plurality of microwave generators and thereby providing said heating pattern within said cavity.
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Accused Products
Abstract
A microwave heating apparatus and a method of heating a load using microwaves is disclosed. The microwave heating apparatus comprises a cavity arranged to receive a load, a plurality of feeding ports for feeding microwaves from a plurality of microwave generators to the cavity, and a control unit. The control unit is configured to obtain a desired temperature pattern within the cavity based on information about a plurality of regions of the load. The control unit is also configured to determine a heating pattern comprising zones of different intensities corresponding to the desired temperature pattern, and control at least one of the plurality of microwave generators for providing the heating pattern within the cavity. The apparatus and method may provide heating of a load according to different desired temperatures in various parts of the load.
164 Citations
20 Claims
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1. A microwave heating apparatus comprising:
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a cavity arranged to receive a load; a plurality of feeding ports configured to feed a plurality of microwaves from a plurality of microwave generators to said cavity, the microwaves generated by at least one of the plurality of microwave generator and fed to the cavity providing a mode field in the cavity; and a control unit configured to; obtain a desired temperature pattern within said cavity based on information about a plurality of regions of said load, determine a heating pattern comprising zones of different intensities corresponding to said desired temperature pattern, wherein a zone of higher intensity in the determined heating pattern corresponds to a region of higher temperature in the desired temperature pattern; and control at least some of said plurality of microwave generators for combining mode fields provided by said at least some of said plurality of microwave generators and thereby providing said heating pattern within said cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of heating a load in a cavity using microwaves, said method comprising the steps of:
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obtaining a desired temperature pattern for a plurality of regions of said load; determining a heating pattern with zones of different intensities corresponding to said desired temperature pattern, and heating said load with the determined heating pattern in said cavity.
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16. A microwave heating apparatus comprising:
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a cavity configured to receive a load; at least one microwave port configured to supply a signal from at least one signal generator to said cavity, the signal is generated by at least one of a solid state microwave generator and a frequency-controllable microwave generator, wherein the signal is configured to provide a mode field in the cavity; and a control unit, wherein the control unit is configured to obtain a desired temperature pattern within said cavity based on at least one sensed input in at least one region of said load to determine a heating pattern comprising a plurality of zones having different intensities, the intensities correspond to said desired temperature pattern, wherein a zone of higher intensity in the determined heating pattern corresponds to a region of higher temperature in the desired temperature pattern; and wherein the control unit is configured to control at least one of a plurality of signals generated by the signal generator for combining mode fields provided by at least one of the signal generators thereby providing said heating pattern within said cavity. - View Dependent Claims (17, 18, 19, 20)
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Specification