Selective Heating with Active and Passive EM Elements

The patent divides the heating system into multiple independent active electromagnetic elements arranged in an array, where each element can be independently controlled to generate localized electromagnetic fields. This segmentation allows different regions to be heated independently, achieving both broad coverage and uniform heating by activating appropriate subsets of elements based on the heating requirements of different food items.

The patent implements local quality control by enabling each active electromagnetic element to be independently activated or deactivated based on the specific heating needs of different food items. This allows different regions of the heating chamber to have different heating characteristics, enabling precise control over which areas receive heating energy and at what intensity, thus achieving uniform heating across diverse food items.

The patent implements dynamic control of the electromagnetic field by enabling real-time activation and deactivation of individual active elements based on detected food item characteristics and user preferences. This dynamic adaptability allows the system to switch between heating all items simultaneously or selectively heating only specific items, providing versatility while maintaining the capability to handle multiple food items.

The patent incorporates feedback mechanisms through sensors that detect the presence, position, and properties of food items in the heating chamber. This feedback information is used to automatically adjust which active elements are activated, enabling the system to adaptively determine the optimal heating pattern for the specific combination of food items present, thus achieving both completeness and selectivity.

The patent employs passive electromagnetic elements that serve multiple functions: they extend the electromagnetic field from active elements, shape the heating pattern, and can be passively activated without requiring independent power sources or complex control circuits. This multi-functionality reduces the number of active elements needed while maintaining selective heating capability, thereby reducing overall system complexity.

The patent introduces passive electromagnetic elements as intermediaries between active elements and food items. These passive elements receive electromagnetic energy from active elements and redistribute it to create the desired heating pattern. This intermediary approach allows a smaller number of active elements to achieve complex selective heating patterns that would otherwise require many more independently controlled active elements.