JP2674259B2 - Induction heating device for pan for Chinese food - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an induction heating device for a hemispherical Chinese cooking pan used in an electromagnetic cooker for business use, according to a required heating mode in which the pan bottom is different depending on the cooking method. The present invention relates to an iron core that can be heated efficiently and that can easily form an iron core that constitutes a magnetic path together with a pan along the pan bottom.

[Conventional technology]

In an induction heating apparatus that heats a hemispherical Chinese cooking pot by the electromagnetic induction action of an induction heating coil, the coil is generally curved along the pan bottom to uniformly heat the entire pan bottom.

[Problems to be solved by the invention]

The cooking methods of Chinese food can be roughly divided into two types: one in which a hemispherical pan is placed on the range and the ingredients in the pan are mixed, and one in which the pan is swung. In the former case, it is particularly desirable to heat the pan bottom and the peripheral edge of the pan to heat the whole food, and in the latter case it is particularly desirable to heat the pan from the handle side to the front end to a high temperature to make it easier to turn the food over. Be done.

In the above structure that uniformly heats the entire pan bottom, the heating efficiency is low because it differs from the required heating mode, and it is difficult to form the iron core that composes the magnetic path with the pan along the pan bottom using a ferrite core or the like. There was a drawback that was.

In order to eliminate the above-mentioned drawbacks, the present invention can efficiently heat the pan bottom according to the required heating mode which differs depending on the cooking method, and can easily form the iron core forming the magnetic path with the pan along the pan bottom. It is an object of the present invention to provide an induction heating device for a hemispherical Chinese cooking pan.

[Means for solving the problem]

In order to achieve the above-mentioned object, the present invention provides an induction heating apparatus for heating a hemispherical magnetic metal pan for Chinese food by an electromagnetic induction action of an induction heating coil wound in a spiral shape. It is curved along the bottom and spirally wound around the center and peripheral edge of the pan,
The iron core that is laid along the bottom of the pan below the induction heating coil and constitutes the magnetic path together with the pan is formed by a large number of fan-shaped segmented iron cores obtained by dividing a hemispherical surface into a plurality of circular cutting surfaces and radial surfaces. Heat the center and pan rim to a high temperature.

Further, in an induction heating device that heats a hemispherical magnetic metal pan for Chinese food by the electromagnetic induction action of an induction heating coil wound in a spiral shape, the induction heating coil is curved along the bottom of the pan, and left and right 2 The coil is wound into two semicircles in a spiral shape and is laid along the bottom of the pan below the induction heating coil to form a magnetic path together with the pan. The hemisphere is divided into a plurality of rounded faces and radial faces. It is made up of a large number of fan-shaped divided iron cores, and is heated to a high temperature in the diametrical direction from the handle side of the pan to the front end.

[Action]

Since the coils 1, (11) are wound so that the magnetic flux can be distributed according to the required heating mode, the pan bottom is heated efficiently, and the iron cores 3, (13) are divided into a number of fan-shaped split iron cores 3a, (13a). Since it is formed, it can be easily formed along the bottom of the pan.

〔Example〕

FIG. 1 shows an embodiment of the present invention. This figure shows a dish in which a hemispherical pan 2 made of magnetic metal is set on a range 4 for cooking, and an induction heating coil 1 wound in a spiral shape is arranged below the pan support 5 and the coil 1 An iron core 3, (or 13) that forms a magnetic path together with the pan 2 is provided on the lower side. The coil 1 is curved along the pan bottom as shown in FIG. 2, and the magnetic flux is generated in accordance with a required heating mode for heating the pan bottom and the peripheral portion of the pan 2 shown by hatched portions in FIG. 3 to a particularly high temperature. It is wound so that it can be distributed. The iron core 3 is formed of a ferrite core having a high magnetic permeability so as to have a hemispherical shape along the pan bottom as shown in FIG. 4, and the hemispherical surface is composed of a plurality of rounded surfaces and radial surfaces as shown in FIG. It is formed by combining a large number of fan-shaped divided iron cores 3a. The iron core 3 is suitable for a small size, and for a large size, the iron core 13 shown in FIG. 6 is formed by combining a large number of fan-shaped split iron cores 13a made of flat plates into a hemispherical shape as shown in FIG. It doesn't matter.

FIG. 8 and FIG. 9 showing another embodiment show an induction heating coil 11 for swinging the pan 2 to cook the coil, which is wound in a spiral shape and curved along the pan bottom.
As shown by the hatched portion in FIG. 10, 11 is wound so that the magnetic flux can be distributed from the handle side of the pan 2 to the front end portion in accordance with the required heating mode for heating to a particularly high temperature.

In the induction heating device, when a high-frequency current is passed through the coils 1 and 11, an eddy current is generated in the pan 2 by an electromagnetic induction action by an alternating magnetic flux, and the pan 2 is heated by Joule heat due to the eddy current and the specific resistance of the pan 2. It can be heated to a high temperature according to the mode.

〔The invention's effect〕

According to the present invention, the induction heating coil is curved along the pan bottom and is spirally wound around the center and the peripheral edge of the pan, and is laid along the pan bottom below the induction heating coil. By forming the iron core that constitutes the magnetic path together with the pan with a large number of fan-shaped split cores obtained by dividing the hemispherical surface into a plurality of rounded surfaces and radial surfaces, and heating the center and the peripheral portion of the pan to high temperatures. , The Chinese cooking pot is placed on the induction heating device, and when the ingredients in the pot are stirred and cooked, heat can be efficiently applied to the entire ingredients by heating, and the iron core easily follows the shape of the hemispherical pot. Can be formed.

In addition, the induction heating coil is curved along the pan bottom and spirally wound into two left and right semi-circles, and is laid along the pan bottom below the induction heating coil to form a magnetic path with the pan. The iron core to be formed is formed of a large number of fan-shaped divided iron cores obtained by dividing the hemispherical surface into a plurality of circular cutting surfaces and radial surfaces,
By heating to a high temperature in the diameter direction from the handle side of the pan to the front end, it is possible to efficiently heat the food when it is turned over and the iron core easily follows the shape of the hemispherical pan. Can be formed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the coil of FIG. 1, FIG. 3 is a pan heating mode diagram of FIG. 1, and FIG. FIG. 5 is a perspective view of an iron core, FIG. 5 is a perspective view of the split iron cores of FIGS. 1 and 4, FIG. 6 is a plan view of another embodiment of the present invention, and FIG. 7 is a split iron core of FIG. FIG. 8 is a perspective view, FIG. 8 is a vertical sectional view of another embodiment of the present invention, FIG. 9 is a plan view of FIG. 8, and FIG. 10 is a pan heating corresponding to the coils of FIGS. 8 and 9. It is a mode diagram. 1,11 …… coil, 2 …… pane, 3,13 …… iron core, 3a, 13a…
… Split iron core.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-298673 (JP, A) JP-A-50-130038 (JP, A) JP-A-1-246782 (JP, A) Actual Kaihei 3- 26096 (JP, U) Actual opening Sho 51-72244 (JP, U) Actual opening Sho 63-72890 (JP, U)

Claims (2)

(57) [Claims] 1. An induction heating apparatus for heating a hemispherical magnetic metal pan for Chinese food by electromagnetic induction of a spirally wound induction heating coil, wherein the induction heating coil is curved along the pan bottom. Along with the center of the pan and the peripheral edge of the pan, the iron core is laid along the bottom of the pan below the induction heating coil and forms a magnetic path with the pan. An induction heating device for a Chinese cooking pot, characterized in that it is formed by a large number of fan-shaped segmented iron cores divided in a radial direction, and the center portion and the peripheral portion of the pot are heated to a high temperature. 2. An induction heating apparatus for heating a hemispherical magnetic metal pan for Chinese food by electromagnetic induction of a spirally wound induction heating coil, wherein the induction heating coil is curved along the pan bottom. Along with the pan, the iron core is spirally wound into two semicircles on the left and right sides and is laid along the bottom of the induction heating coil to form a magnetic path. An induction heating device for a Chinese cooking pot, characterized in that it is formed by a large number of fan-shaped split iron cores divided in planes, and is heated to a high temperature in the diametrical direction from the handle side to the front end of the pot.