A kind of electromagnetic cooker and its manufacturing method

Abstract

The invention discloses an electromagnetic oven, belonging to the technical field of household cookware. The electromagnetic oven comprises a panel, wherein the panel comprises a substrate and a thick-film coil combined with the substrate; the substrate is made of a nonmetallic material; and the thick-film coil is spirally formed on the substrate in one or more layers by using a thick-film conductor sizing agent with a screen printing method. The thickness of the thick-film coil is within 5 millimeters, so that ultrathin design of the electromagnetic oven is facilitated, the skin effect is reduced, the internal resistance is small, the temperature rise is lowered, and the heat efficiency can be increased by about 5 percent.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic cooking utensils, in particular to an electromagnetic induction component used in an electromagnetic cooker. Background technique [0002] In recent years, with the development of electromagnetic technology, induction cooker, as an emerging kitchen appliance product, has been recognized by consumers for its advantages of energy saving, cleanliness, and fast heating speed. The coil disk is an important power output element of the induction cooker, and the coil disk is evenly wound on the winding bracket by a turn of enameled wire. Each turn of enameled wire is composed of several single strands of enameled wire. In order to meet the needs of inductance, each strand of enameled wire will be made thicker. In the working state of the induction cooker, when the alternating current passes through each enameled wire, the current will tend to flow on the surface of the conductor. This phenomenon ...

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Problems solved by technology

The skin effect will cause the resistance to increase, which will cause serious heating of the coil. A large amount of heat energy will cause the temperature in the furnace to be high, which will reduce the heating efficiency of the coil plate and increase the cost of heat dissipation. The installation structure of the induction cooker is superimposed on the circuit board. IGBT, bridge stack and other electronic components are affected by the coil disk, and the high temperature accelerates the aging of the electrical components of the induction cooker

[0003] This kind of traditional induction cooker coil is very bulky, which is not conducive to the thin and light design of the product. At the same time, serious heat generation will increase the heat dissipation cost.

The volume of the coil plate is very large, which is not conducive to thin and light design

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