Single-layer electromagnetic wire coil capable of changing heating area

Abstract

The invention belongs to the technical field of household electrical appliances, and particularly relates to a single-layer electromagnetic wire coil capable of changing heating area. The single-layerelectromagnetic wire coil comprises a control device, a coil frame and a first coil and a second coil which are wound on the coil frame. The control device is connected with the first coil and the second coil. The control device can control the first coil or the second coil to work. The difference of the inductance of the first coil and the inductance of the second coil is within 0%-12% of the inductance of the coil having less inductance. The first coil is the small area heating coil. The second coil is the large area heating coil. The two coils are arranged on the same layer. The single-layer electromagnetic wire coil capable of changing the heating area has the beneficial effects of simple coil winding and great heating uniformity, the two coils have equal or similar inductance, the coils can be directly switched and controlled and additional processing of the resonant circuit and the software program is not required.

Description

technical field [0001] The invention belongs to the technical field of household appliances, and in particular relates to a single-layer electromagnetic coil with a variable heating area. Background technique [0002] The traditional control method for changing the heating area is to switch to the inner ring A lead wire and the inner ring B lead wire when heating a small area, and only use the inner ring coil for heating; when heating a large area, connect the inner ring A lead wire to the outer ring A lead wire , the inner ring B lead wire is connected to the outer ring B lead wire, and the inner / outer ring coils are connected in parallel for heating; or the inner ring B lead wire is connected to the outer ring A lead wire, and the inner / outer ring coils are connected in series for heating; Disadvantages: [0003] 1. When heating a large area of ​​double rings, there is a serious heating isolation zone between the inner ring and the outer ring, and the heating effect is poo...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the existing technical problems, the present invention provides a single-layer electromagnetic wire coil that can change the heating area, which solves the problems of complex coil coil design in the prior art, parameter control air troubles, heating isolation belt, poor heating uniformity, and two wire coils. After the disk inductance is connected in series / parallel, the inductance will change greatly, causing the parameters of the resonant circuit to change, requiring additional compensation and processing, increasing the cost, complicated control circuits and programs, and difficult to control the quality, etc.

Images