JPH05251166A - Induction heating cooker - Google Patents

Abstract

(57) [Summary] [Purpose] An object is to provide a robust induction heating cooker with a simple structure, which is safe and easy to use. [Structure] A pan body 1 is placed on a heat-resistant resin upper body 4 which is integrally formed with a standing wall 5 having a flat plate shape and continuous to the outer peripheral portion, and the outer peripheral portion is formed in an inverted U shape to form a concave portion 2. A heating coil 7 that is mounted below the body 4 and that induction-heats the pot body 1, the standing wall 5 of the upper body 4 is inserted into the recess 2 of the pot body 1, and the back surface of the pot body 1 and the upper body 4 are also inserted. A gap 11 is formed between the upper surfaces to configure.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to an induction heating cooker.

[0002]

2. Description of the Related Art In recent years, induction heating cookers are becoming popular in general households. A conventional induction heating cooker of this type will be described with reference to FIG. As shown in the figure,
A heat-resistant flat plate 41 made of glass ceramic or the like is provided with a heating coil 42 below the top plate 41.
In general, the pot body 43, which is placed on the top and has a smooth bottom, is placed and heated. 44 is an upper body and 45 is a lower body.

[0003]

In such a conventional induction heating cooker, since the top plate 41 made of glass ceramic or the like is smooth, the pot body 43 is slippery and the pot body 43 falls off from the top plate 41. There was a fear that it was dangerous especially when cooking tempura. Further, in this type of cooker, since the output varies depending on the positional relationship between the heating coil 42 and the pan body 43, it is necessary to print a pattern of the same shape as the heating coil 42 on the top plate 41,
The maximum output could not be obtained unless the user placed the pot body 43 at the center of the pattern while constantly paying attention.

Further, in a pottery plate having a magnetic layer formed on aluminum and a pot body 43 having a relatively small weight, such as a pot body 43 made of a small thin plate, especially the center portion is easily warped by heat and easily rotated, which is extremely convenient. Was a bad thing.

In addition, in this type of cooker, the pan body 43 itself generates heat, and the top plate 41 made of glass ceramic or the like does not become relatively hot, and it is easy to clean up the cooker body. However, since the pot body 43 itself is at a high temperature, practically, like the other cookers, it was impossible to clean up the cooker body until the pot body 43 had cooled.

[0006] In addition, especially when attaching and detaching a pan body 43 of a relatively heavy weight made of iron casting or the like, the periphery of the top plate 41 made of glass ceramic or the like is chipped or the upper body 4 is
It was easy to damage the main body even if the user was careful, such as scratching 4.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a safe and convenient induction heating cooker having a simple structure.

[0008]

In order to achieve the above object, the first means of the induction heating cooker of the present invention is a heat-resistant resin made of a flat plate integrally formed with a standing wall continuous to the outer periphery. An upper body, a pan body that is placed on the upper body and has a concave portion with an outer peripheral portion having an inverted U shape, and a heating coil that is mounted under the upper body and that induction-heats the pan body. The standing wall of the upper body is fitted into the recess of the pot body, and a gap is formed between the back surface of the pot body and the upper surface of the upper body.

The second means is a flat plate-shaped upper body made of a heat-resistant resin integrally formed with a continuous wall on the outer peripheral portion, and is mounted on the upper body, and the outer peripheral portion is formed into an inverted U shape. And a pot body with a recess formed, and it is installed under the upper body,
A heating coil for inductively heating the pot body, a plurality of continuous concave and convex portions are formed on the recess of the pot body and the standing wall of the upper body, and the standing wall of the upper body is inserted into the pot body recess. Constitute.

A third means is a top plate made of a heat-resistant flat plate, an upper body made of heat-resistant resin on which the top plate is placed and grooves are integrally formed on the outer periphery, and an outer periphery of the cooking surface is reversed. A pan body having a U-shaped flange is formed, and the outer peripheral flange is hung from the back side of the cooking surface, and a plurality of protrusions are provided on this end face, and the groove provided on the upper body is the protrusion. Is configured to support.

A fourth means is to construct a top plate made of a heat-resistant flat plate, an upper body made of heat-resistant resin for supporting the top plate, a pan body integrally formed with an annular rib on the back surface, and the upper body. It is attached to the lower surface and has a heating coil for inductively heating the pan body, and the outer peripheral portion of the top plate is fixed to the upper body with a frame body made of non-magnetic metal, and this frame body has an annular rib inside the pan body. It is configured so that the circumference is fitted and placed.

[0012]

According to the present invention, since the pot body is positioned with respect to the heating coil by the above-described structure, a stable output is always obtained and the pan body is prevented from slipping or rotating on the top plate. Further, even if the pot body is placed directly on the table after cooking, there is no risk of the table being damaged by heat because it contacts the table at the outer peripheral portion. Further, by fixing the top plate with a metal frame body and supporting the pan body on this frame body, damage to the main body can be prevented.

[0013]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIG.

In the figure, reference numeral 1 denotes a cast iron pot body having a recessed portion 2 provided in the outer peripheral portion thereof in a substantially U-shaped flange shape, and a plurality of ribs 3 are disposed in the recessed portion 2. Reference numeral 4 denotes an upper body made of a heat-resistant resin such as PPS resin, which integrally forms a continuous standing wall 5 on the outer peripheral portion. Reference numeral 6 denotes a lower body, to which an annular heating coil 7, a circuit board 8 and a cooling fan 9 are fixed, legs 10 are integrally formed on the lower surface, and which are fixed to the upper body 4 by mounting screws (not shown). There is.

In the above structure, the pot body 1 placed on the upper body 4 is one in which the standing wall 5 of the upper body 4 is fitted and supported in the ribs 3 formed in the outer peripheral recessed portion 2. An appropriate gap 11 is formed between the rear surface of the pot body 1 and the upper surface of the upper body 4. A high-frequency alternating current is passed through the heating coil 7 to generate an alternating magnetic field, and the pot body 1 is induction-heated. At this time, the temperature of the outer peripheral portion of the pot body 1 is relatively low, and since the standing wall 5 of the upper body 4 is in contact with the ribs 3, the temperature becomes even lower.

As described above, according to the first embodiment, the pot body 1
Is supported and positioned by this outer peripheral portion, so there is no risk of the pan body 1 moving during cooking, and the back surface of the pan body 1 does not come into direct contact with the upper body 4, which is relatively inexpensive. Realize a safe, practical and inexpensive induction heating cooker, in which the upper body 4 can be made of various materials and the positional relationship between the heating coil 7 and the pan body 1 can be kept constant and stable output can be obtained. You can

(Second Embodiment) A second embodiment of the present invention will be described below with reference to FIG.

In the figure, reference numeral 12 is a cast iron pot body having a substantially inverted U-shaped flange-shaped recess 13 provided on the outer periphery thereof.
A plurality of concave and convex portions 14 are arranged in the concave portion 13. 1
Reference numeral 5 denotes an upper body made of a heat-resistant resin such as PPS resin, which is provided with a continuous standing wall 16 on the outer peripheral portion thereof, and on the outer peripheral portion of the standing wall 16, the concavo-convex portion 14 and the concavo-convex portion 17 having substantially the same shape are integrally formed. ing. 18 shows a heating coil. Other configurations are the same as those in the first embodiment.

In the above structure, the pot body 12 placed on the upper body 15 has the recess 13 formed on the outer periphery of the flange portion.
The uneven portion 14 provided on the upper body 15 and the uneven portion 17 provided on the standing wall 16 of the upper body 15 are fitted and supported. At this time, an appropriate gap 19 is provided between the back surface of the pan 12 and the upper surface of the upper body 15. To be formed.

As described above, according to the second embodiment, the pan body 1
2 is supported by this outer peripheral portion, and the pot body 12 and the uneven portions 14 and 17 provided on the standing wall 16 of the upper body 15 are fitted to each other, and the pot body 12 is positioned and Even if the pot body 12 is lightweight, there is no fear of rotation, and an easy-to-use induction heating cooker can be realized.

(Embodiment 3) A third embodiment of the present invention will be described below with reference to FIG.

In the figure, reference numeral 21 denotes a cast iron pot body, which is provided with a concave portion 23 in the outer peripheral portion of the cooking surface 22 in the shape of a substantially inverted U-shape, and the outer peripheral flange 24 is further provided than the rear surface of the cooking surface 22. A plurality of protrusions 25 on this end face.
Are integrally formed.

Reference numeral 26 denotes a top plate made of glass ceramic, which is fixed to the upper body 27 by adhesion. A groove 28 is formed on the outer peripheral portion of the upper body 27. Other configurations are the same as those in the first embodiment.

In the above structure, the pot body 21 placed on the upper body 27 has the protrusion 25 at the lower end of the outer peripheral flange 24 locked by the groove 28 provided on the upper body 27. At this time, a gap 29 is provided between the back surface of the cooking surface 22 and the top surface of the top plate 26. Therefore, the temperature of the top plate 26 after cooking is low, and even if the pot body 21 is replaced with a table or the like, the back surface of the cooking surface 22 does not come into direct contact with the table, and the temperature of the protrusion 25 is extremely low, so that the table cloth is low. It is possible to realize an induction heating cooker that is extremely easy to dispose of, such as not being damaged by heat.

(Fourth Embodiment) A fourth embodiment of the present invention will be described below with reference to FIG.

In the figure, 31 is a pot body made of magnetic metal such as cast iron, and an annular rib 33 is integrally formed on the back surface of the cooking surface 32. Reference numeral 34 denotes a top plate made of glass ceramic or the like, which is adhered and fixed to an upper body 35 made of heat-resistant resin. Reference numeral 36 denotes a die-cast frame body made of non-magnetic metal such as aluminum, which is attached to the upper body 35 via a waterproof packing 38 made of silicon rubber so that the flange portion 37 presses the outer peripheral portion of the top plate 34. It is fixed with a mounting screw 39. 40 shows a heating coil.

In the above structure, the pan 31 is placed on the frame 36 and positioned by the annular rib 33, so that the pan 31 is prevented from sliding on the heat-resistant flat plate. Further, since the top plate 34 and the upper body 35 do not come into direct contact with each other during the attachment / detachment, they are not damaged. Further, at this time, since the waterproof packing 38 is interposed, it is possible to realize a safe and robust induction heating cooker in which the top plate 34 is not directly impacted.

[0028]

As is apparent from the above embodiments, according to the induction heating cooker of the present invention, since the pan body is reliably positioned with respect to the heating coil, a stable output can be obtained and slippage or slippage can be prevented. Since it does not rotate, it is safe and easy to use, and by hanging the outer peripheral flange part it is easy to clean up, and by receiving it with a metal frame, an induction heating cooker with excellent robustness can be provided. Can be provided.

[Brief description of drawings]

FIG. 1A is a sectional view of an induction heating cooker according to a first embodiment of the present invention. FIG. 1B is a sectional view of a main part of the induction heating cooker.

FIG. 2 (a) is a cross-sectional view of a main part of the induction heating cooker according to the second embodiment. (B) A back view of a local portion of a pot body of the induction heating cooker. (C) A top portion of the upper body of the induction heating cooker. Top view

FIG. 3 is a sectional view of an essential part of the induction heating cooker according to the third embodiment.

FIG. 4 is a sectional view of a main part of an induction heating cooker according to the fourth embodiment.

FIG. 5 is a sectional view of a conventional induction heating cooker.

[Explanation of symbols]

 1,12,21,31 Pan body 2,13,23 Recessed portion 4,15,27,35 Upper body 5,16 Standing wall 7,18,40 Heating coil 11,19,29 Gap 14,17 Uneven portion 22,32 Cooking Surface 24 Outer peripheral flange 25 Projection portion 26, 34 Top plate 28 Groove portion 33 Annular rib 36 Frame body

Claims (4)

[Claims] 1. A flat body made of a heat-resistant resin integrally formed with a standing wall continuous to the outer peripheral portion, and a pan body mounted on the upper body, the outer peripheral portion of which has an inverted U shape to form a concave portion. And a heating coil that is mounted under the upper body and that induction-heats the pot body, and the standing wall of the upper body is fitted into the recess of the pot body, and there is a gap between the back surface of the pot body and the upper surface of the upper body. An induction heating cooker formed by forming. 2. An upper body made of heat-resistant resin, which is integrally formed with a standing wall which is flat and continuous at the outer peripheral portion, and a pan body which is placed on the upper body and whose outer peripheral portion has an inverted U-shape to form a concave portion. And a heating coil that is mounted under the upper body and that induction-heats the pot body, forms a plurality of continuous uneven portions on the recess of the pot body and the standing wall of the upper body, and An induction heating cooker in which the upright wall of the upper body is inserted. 3. A top plate made of a heat-resistant flat plate, an upper body made of heat-resistant resin on which the top plate is placed and grooves integrally formed on the outer periphery, and an inverted U-shaped flange portion on the outer periphery of the cooking surface. Induction heating, in which the outer peripheral flange is hung from the back side of the cooking surface and a plurality of protrusions are provided on the end face, and the groove provided on the upper body supports this protrusion. Cooking device. 4. A top plate made of a heat-resistant flat plate, a heat-resistant resin upper body supporting the top plate, a pan body integrally formed with annular ribs on the back surface, and a pan attached to the lower surface of the upper body. A heating coil for inductively heating the body, the outer peripheral portion of the top plate is fixed to the upper body by a frame body made of non-magnetic metal, and the inner periphery of the annular rib of the pot body is fitted and mounted on the frame body. An induction heating cooker configured to be placed.