Electromagnetic induction heater capable of increasing heating scope

Abstract

The invention discloses an electromagnetic induction heater capable of increasing a heating scope. The heater comprises a bearing plate provided with a heating area for arranging at least one material container, and multiple first induction coils which are respectively of oval structures and are arranged on one side surface of the bearing plate, wherein each first induction coil respectively provides a sub heating area to form the heating area to heat the at least one material container. The electromagnetic induction heater capable of increasing the heating scope has a free area heating mode and can prevent an electromagnetic oven from being damaged due to improper position arrangement of the material container.

Description

technical field [0001] The invention relates to an electromagnetic induction heating device, in particular to an electromagnetic induction heating device capable of increasing the heating range. Background technique [0002] With the development of the electronic industry, cooking food is no longer limited to the use of traditional stoves and kitchen utensils. For example, electric cookers, induction cookers, microwave ovens and other conditioning household appliances have become the daily routine of ordinary people in recent years through continuous research and development and progress. Electrical products indispensable to life. [0003] Among them, the induction cooker uses the principle of electromagnetic induction. When the induction cooker is energized, the current passes through the induction coil of the induction cooker to generate a magnetic field. In this magnetic field that changes with time, the magnetic flux passing through the conductor pot will change accordi...

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Problems solved by technology

[0007] What's more, when the food container moves from the first sub-heating area to the second sub-heating area for heating, since the temperature of the second sub-heating area is lower than that of the heated food container, that is, the temperature sensed by the corresponding temperature sensor The measured temperature is also lower than the heated food container, and the controller will drive the induction coil to heat according to the temperature of the temperature sensor corresponding to the second sub-heating area. In this way, the induction coil at low temperature will continuously Heating the high-temperature food container will cause the food in the food container to burn, or cause damage to the food container itself, which will also cause the increase of the virtual power of the induction coil and the loss of easy burning

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