Induction heating apparatus

Abstract

The invention provides an induction heating apparatus. The induction heating apparatus comprises a metal wire base plate, an induction metal wire, a first ferrite and a central heating assembly; the induction metal wire is wound around the metal wire base plate; the first ferrite is mounted at the bottom of the metal wire base plate and positioned blow the induction metal wire; the central heating assembly is detachably mounted in the central position of the metal wire base plate; the central heating assembly comprises a second ferrite, an upper layer induction metal wire, a lower layer induction metal wire and a wire spool; the wire spool comprises a first mounting surface and a second mounting surface; the lower layer induction metal wire is wound around the second mounting surface of the wire spool; the second ferrite is arranged in the center of the wire spool; and the upper layer induction metal wire is wound around the first mounting surface, and the upper layer induction metal wire is wound by taking the second ferrite as the symmetrical center. The induction heating apparatus has the advantages of uniform heating and seamless all-region heating.

Description

technical field [0001] The invention relates to the field of induction heating, in particular to a heating device using induction coil metal wires for heating. Background technique [0002] Most household appliances such as conventional electric cookers and induction cookers adopt electromagnetic heating coil discs in microwave electromagnetic induction heating technology to heat and cook food. Electromagnetic coil heating is based on the principle of magnetic field-induced eddy current, using high-frequency alternating current to pass through the ring coil to generate a closed magnetic field. When the magnetic field lines pass through the bottom of the magnetically conductive pot, countless small eddy currents will be generated to heat the pot. The coil plate is the most important part of various microwave heating household appliances, which not only affects the manufacturing cost of electrical appliances, but also is a key factor determining the quality of household applia...

AI Technical Summary

Problems solved by technology

[0003] The existing electromagnetic heating coils are all wound on the same plane, specifically, the outer coil surrounds the inner coil and is wound layer by layer, so there will inevitably be a blank part in the center of the electromagnetic heating coil, which will cause the pot to be damaged. The center part generates less heat, and there is a heating blind area in the center. When cooking, the food is mainly concentrated in the middle of the pot, resulting in poor cooking results for users. There are other ways to improve the problem of insufficient center temperature during pot heating and cooking, but none of them are ideal

The uniformity of electromagnetic coil heating has little effect on heating and cooking water, soup and other low-consistency and high-fluidity substances (food), but when heating and cooking rice and other high-consistency, poor fluidity foods and pancakes, etc., Inhomogeneity during heating is fatal to electric rice cookers, electric pressure cookers, and induction cookers. Rice cookers and electric pressure cookers can easily burn the rice or get it raw, while induction cookers are heated unevenly and have local high temperatures. Burning red, so the baked cakes are browned differently

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