JPS6394587A - Induction heating cooker - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an induction heating cooker that heats a magnetic metal body using electromagnetic induction.

BACKGROUND OF THE INVENTION In recent years, induction heating cookers have been highly praised for their safety, as they do not cause ignition or extinguishing, because they can cook without using flames.

A conventional induction heating cooker will be explained with reference to FIGS. 6 and 7. In FIGS. 3 and 4, an upper opening that houses a heating coil 5 that generates magnetic lines of force is covered with a ceramic top plate 2.

A switch section 3 is provided on the side surface of the main body 1 to adjust power on/off and input. Also, top plate 2
A heated body 4 is placed on top of the heated body 4 . This heated body 4
Usually refers to metal pots, iron plates, etc.

The operation of the induction heating cooker configured as described above will be described below. First, the object to be heated 4 is placed in the center of the ceramic top plate 2. Next, by operating the switch section 3, magnetic lines of force are generated from the heating coil 6, and the heated body 4 itself generates heat.

Problems to be Solved by the Invention However, in the conventional configuration, only the heated object 4 made of a material that acts on magnetic lines of force was heated through the ceramic top plate 2. Therefore, a non-conductive heated body made of aluminum or ceramic that does not act on magnetic lines of force cannot be used, and the usable range of the heated body is limited.

The present invention solves the above-mentioned problems, and aims to provide an induction heating cooker that can use heated objects made of all materials.

Means for Solving the Problems In order to achieve this object, the induction heating cooker of the present invention has the following features:
It is arranged on the top of a main body that houses a heating coil that generates magnetic lines of force, and has a top plate on which an object to be heated is placed, and has a part that is heated by induction and a part that is not heated by induction.

Effect: With this configuration, the magnetic lines of force generated from the heating coil heat the part of the top plate that is inductively heated, allowing the heating of non-conductive heated objects such as aluminum or ceramics that do not act on the lines of magnetic force placed on the top of the top plate. It is also possible to conduct heat to the object to be heated, so it can be heated without selecting the material of the object to be heated.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. In FIGS. 1 and 2, a heating coil 6 that generates magnetic lines of force is provided inside the main body 1. A top plate partially provided with magnetic metal elements is fixed to the upper part of the main body 1. A switch section 3 for adjusting the input to the power supply and heating coil 5 is provided on the side surface of the main body 1. The object to be heated 4 placed on the top plate 6 is usually a pot or an iron plate.

The operation of the induction heating cooker configured as above will be explained below. First, place the heated object 4 on the top plate 8.
Place it on. Next, by operating the switch section 3, magnetic lines of force are generated in the heating coil 5, and the magnetic metal body 7 generates heat, which is transmitted and heats the non-conductive heated body 4. At this time, if the heated body 4 is a conductor, it also receives magnetic lines of force from the heating coil 6, as in the conventional example, and the heated body 4 itself generates heat.

By the way, since the magnetic metal body 7 is partially arranged on the surface of the plate 8 on which the object to be heated is placed, when metal steel is used, heating is achieved by induction heating and heat conduction via the metal body 7. Therefore, it has better thermal efficiency than a case where the entire mounting surface is made of metal, and when an earthenware pot is used, it is heated by heat conduction through the metal, making it suitable for keeping warm.

In the above embodiment, the metal body 7 is made of a magnetic material, but it may be made of a thin aluminum foil or the like that can be heated magnetically.

3 to 5 are plan views showing other embodiments;
The figure shows the metal body 7 formed into an annular shape, FIG. 4 shows the embodiment of FIG. 3 with a metal body further arranged in the center, and FIG. A metal body 7 is disposed only in the center of opposing plates 6.

Effects of the Invention As described above, according to the present invention, by providing a portion of the top plate that is heated by induction, it is possible to heat objects made of all materials, not just objects that generate heat due to the action of magnetic lines of force. It can be heated, and the usable range of the heated object can be expanded. Furthermore, since the top plate is provided with a partially heated portion, it is possible to increase the thermal efficiency when using a metal pot, compared to a case where the entire surface on which the object to be heated is placed is a heated portion.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an induction heating cooker showing one embodiment of the present invention, Fig. 2 is a perspective view of the same external appearance, and Figs. 3 to 6 are plan views showing other embodiments of the invention. , FIG. 6 is an external perspective view of a conventional induction heating cooker, and FIG. 7 is a longitudinal sectional view thereof. 5...Heating coil, 1...Main body, 6.
...Top plate, 7...Metal body. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
4=It 7'-i, Hair 3 To No. 21 Fig. 3

Claims (1)

[Claims] A main body that houses a heating coil that generates magnetic lines of force, and a top plate made of a non-conductive material that is disposed on the top of the main body and on which a heated object is placed, the heated object facing the heating coil of the top plate. An induction heating cooker comprising a body placement surface that is provided with a part that is not heated by induction and a part that is heated by induction.