Multilayer excitation coil plate in electromagnetic oven

Abstract

The invention relates to a multilayer excitation coil plate in an electromagnetic oven, which consists of an excitation coil plate bracket 4, a soft magnet 3, a multilayer coil 2 wound by an enameled wire bundle, a sleeve 5, a terminal 6 and the like (see figure 2). A plurality of single-layer coils 1 evenly wound with the enameled wire bundle are connected in series, and then are overlapped into the multilayer coil 2. The single-layer coils connected in series ensure the consistency of current directions by the winding direction of the single-layer coils 1 or the difference of terminals of the single-layer coils 1 connected in series so as to ensure the directions of magnetic force lines are consistent and make the magnetic force lines mutually overlapped and not mutually balanced. The multilayer coil 2 can be two layers or more than two layers 2. The multilayer coil 2 is evenly arranged on the bracket 4, the soft magnet 3 is arranged in the excitation coil plate bracket 4 of the electromagnetic oven, current generates the alternating magnetic force lines through coils on the excitation coil plate, and the magnetic force lines act on a pot bottom to form a vortex and heat a pot so as to form the working state of the electromagnetic oven.

Description

technical field [0001] The invention relates to an excitation coil disk used in an electromagnetic cooker Background technique [0002] The excitation coil disks in the current induction cooker are all wound on the same plane with enameled wire bundles to form a single-layer coil, and then form a single-layer excitation coil disk with brackets, soft magnets, terminals, sleeves, etc. The use of this single-layer excitation coil disk has the following three disadvantages: First, because the excitation coil disk is wound in a single layer, it is specified how many turns to achieve the designed inductance. The resistance is large, which causes the copper loss of the excitation coil disk to be large when the induction cooker is working, so that the energy efficiency ratio of the induction cooker is reduced; the second is that the diameter of the excitation coil coil is relatively large. At the bottom of the pot, there will be more magnetic flux leakage, which will cause certain ...

AI Technical Summary

Problems solved by technology

The use of this single-layer excitation coil disk has the following three disadvantages: First, because the excitation coil disk is wound in a single layer, it is specified how many turns to achieve the designed inductance. The resistance is large, which causes the copper loss of the excitation coil disk to be large when the induction cooker is working, so that the energy efficiency ratio of the induction cooker is reduced; the second is that the diameter of the excitation coil coil is relatively large. At the bottom of the pot, there will be more magnetic flux leakage, which will cause certain pollution to the environment. At the same time, because of the large magnetic flux leakage, the induction cooker will do useless work, waste energy, and reduce the energy efficiency ratio of the induction cooker.

The third is that when the single-layer excitation coil is wound into a coil, the length of the enameled wire used for winding is long, the bracket is large, the length of the soft magnet is long, and the cost is high

Images