JPH0636868A - Induction heating cooker - Google Patents

Abstract

PURPOSE:To improve durability and convenience by integrally providing, by resin molding, a heat resisting flat top plate for placing a pan body which has a raised wall on the outer circumference and an integrally formed collar part suspended from the upper end; and an upper case having a frame part on the outer circumference. CONSTITUTION:A rib 16 is engagingly locked by a frame part 21 provided on an upper case 18 to prevent the slippage of a pan body 11 when moved. Since a hole part 15 is formed on the collar part 13 of the pan body 11, the temperatures of the rib 16 and a handle part 14 are suppressed low. Therefore, the possibility of the damage of the upper case 18 by heat or the erroneous burn at the time of attaching and removing the pan 11 is eliminated. Thus, since the pan body 11 is regulated by the frame part 21 if it is moved, safety is enhanced. Further, since the handle part 14 is situated on the lower end part of the pan body 11 to moderate heat conduction, convenience can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating cooker used at home.

[0002]

2. Description of the Related Art In recent years, induction heating cookers have become 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 1 made of glass ceramics or the like is fixed by a metal frame 2, and a packing 3 or a sealant is interposed between the frame 2 and the heat-resistant flat plate 1, and the pan 4 is boiled over. In general, the pot 4 is waterproof so that it does not enter the inside of the main body, and the pot 4 is heated to a high temperature, and handles 5 made of resin or the like are generally provided on both sides of the upper edge. In addition, the frame 2 has an appropriate height so that the pot 1 does not slide down from the main body. 6 is an upper case made of heat-resistant resin, 7 is a heating coil, 8
Indicates the lower case.

[0003]

In such a conventional induction heating cooker, when the pan moves to the outer periphery, the packing and the adhesive are deteriorated by heat, and the heat transfer from the pan through the frame is carried out. As a result, the upper case may be damaged, and the handle provided on the upper edge of the pot hinders cooking and significantly impairs the appearance.

A second problem is that since a packing or an adhesive agent is interposed between the heat-resistant flat plate and the frame, a slight gap is formed, and oil dregs and cooked food are easily accumulated in this gap,
It was filthy and poorly maintained.

As a third problem, inorganic materials typified by glass ceramics have poor workability, and in particular, circular processing becomes extremely expensive, and there is a risk that strength may deteriorate due to residual stress during processing.

SUMMARY OF THE INVENTION The first object of the present invention is to solve the above-mentioned problems, and a first object thereof is to prevent the upper case from being damaged and to provide a handle which does not interfere with cooking. The second purpose is to prevent the food from being accumulated between the frame and the top plate. A third object is to provide an inexpensive induction heating cooker having excellent workability.

[0007]

In order to achieve the above first object, the first object of the present invention is to provide a rising wall on the outer periphery and integrally form a collar portion that hangs down from the upper end. A pan body, a heat-resistant flat plate-shaped top plate on which the pan body is placed, and a frame portion on the outer periphery of the pan body, and an upper case integrally molded with the top plate. A grip portion projecting to the outer periphery is provided at an end portion, and a rib that hangs from the hole portion and the grip portion and is locked to the inner peripheral surface of the frame portion is integrally provided on the upper portion.

A second means for solving the above-mentioned second object is a pot body having a rising wall on the outer periphery and integrally formed with a collar portion hanging down from the upper end, and this pot body is placed. A heat-resistant flat plate-shaped top plate and an upper case formed by resin-molding a frame portion having an upright wall on its outer periphery integrally with the top plate, and a thin-walled step portion is provided at the root of the inner periphery of the frame portion, and a pan body Is to be locked at the upper end of the upright wall.

A third means for solving the above-mentioned third object is to provide a pot body having a rising wall on the outer circumference and integrally formed with a collar portion that hangs down from the upper end, and the pot body is placed on the pot body. The heat-resistant flat plate-like top plate and an upper case integrally molded with resin so as to cover the outer circumference in a circular shape are formed, and the top plate is polygonal.

[0010]

With the configuration of the above first problem solving means, the first effect is that the ribs are locked by the frame portion provided on the upper case even when the pan body moves to prevent slippage and the pan body collar. Since the hole is formed in the portion, the temperature of the rib and the grip portion is low, and there is no risk of heat damaging the upper case or accidental burns when the pan body is attached or detached. In the second means for solving the problem, since the thin-walled stepped portion is formed at the inner peripheral root of the frame portion integrally molded with the top plate, there is no gap in the corner portion, and even if the cooked food is accumulated, it can be easily maintained. it can. The third means for solving the problems is that the polygonal top plate is integrally resin-molded, so that it can be machined at an extremely low cost as compared with the circular top plate, and it is robust.

[0011]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

In the drawing, 11 is a pot body made of aluminum casting or the like, a rising wall 12 is integrally formed on the outer peripheral portion, and a flange portion 13 is integrally formed so as to hang down from the upper end thereof, and the outer peripheral portion is projected at the end portion. The grip 14 is provided with a hole 15 in the upper part of the grip.
Ribs 16 are integrally formed on the lower surface. An iron-based sprayed layer 17 is formed on the bottom surface. 18
Is an upper case made of heat-resistant resin, and a top plate 19 made of a circular glass ceramic or the like is integrally molded. A frame portion 21 having a continuous upright wall of a suitable height is provided integrally with the case 18 on the outer peripheral portion of the top plate 19.

Reference numeral 22 denotes a lower body, to which an annular heating coil 23 and a circuit board 24 are attached, legs 25 are integrally provided on the lower surface, and fixed to the upper body 18 by attaching screws 26. 27 is a lid and 28 is a lid knob.

In the above structure, a high frequency alternating current is passed through the heating coil 23 to generate an alternating magnetic field, and the pan body 1
The thermal sprayed layer 17 of No. 1 is induction heated. In addition, the pot body 11 collar 13
The ribs provided on the above are fitted into the upright wall 20 of the frame portion 21.

As described above, according to the present embodiment, the holding portion 14 and the rib 1 are formed by the hole 15 provided in the saliva portion of the pan body 11.
6 is small, and therefore the temperature of the handle portion 14 is low when the pan 11 is attached and detached, and the frame portion 21 is safe because it does not touch the ribs 16, and the temperature of the ribs 16 is also low, so that the upright wall 20 is upright. Does not damage the resin by touching.

(Second Embodiment) Next, a second embodiment will be described with reference to FIG.

In the figure, 31 is a pot body made of aluminum casting or the like, a rising wall 32 is integrally formed on the outer peripheral portion, and a flange 33 is integrally formed so as to hang down from the upper end, and an iron-based thermal spray is formed on the bottom surface. The layer 34 is formed. Reference numeral 35 is an upper case made of heat-resistant resin, and a top plate 36 made of circular glass ceramics or the like is integrally molded. The outer wall of the top plate 36 has a continuous upright wall 3 of appropriate height.
A frame portion 38 having a frame 7 and a thin step 39 is provided at the root of the inner periphery. Reference numeral 40 is a lower body, and 41 is a heating coil. Other configurations are the same as those in the first embodiment.

In the above structure, a high frequency alternating current is passed through the heating coil 41 to generate an alternating magnetic field, and the pan 31 is heated.
Of the thermal sprayed layer 34 is induction heated. At this time, even if the pan 31 moves, it is restricted by the upper end of the upright wall 37 provided on the upper case. At this time, the pan 31 does not come into direct contact with the thin stepped portion 39.

As described above, according to this embodiment, since the top plate 36 is formed integrally with the upper case 35, there is no gap between the top plate 36 and the upper case 35, and the cooked food or oil residue is removed. Even if they accumulate, the thin-walled step 39
Since it is formed of, it can be easily removed.
Further, even if the pot body 31 moves, it does not come into contact with the thin step portion 39, so that the temperature is low, and even if it is thin, it will not be thermally deformed.

(Third Embodiment) Next, a third embodiment will be described with reference to FIG.

In the figure, 51 is a pot body made of aluminum casting or the like, a rising wall 52 is integrally formed on the outer peripheral portion, and a collar portion 53 is integrally formed so as to hang down from the upper end, and an iron-based thermal spray is formed on the bottom surface. The layer 54 is formed. Reference numeral 55 denotes a main body upper case made of heat-resistant resin, which is integrally molded so as to cover the outer peripheral part of the top plate 56 made of a circular glass ceramics or the like. Reference numeral 57 denotes a body, to which an annular heating coil 58 and a circuit board 59 are attached, legs 60 are integrally provided on the lower surface, and are fixed to the upper case 55 by mounting screws 61. 62 is a lid and 63 is a lid knob.

In the above structure, a high frequency alternating current is passed through the heating coil 58 to generate an alternating magnetic field, and the pan 51 is heated.
The thermal sprayed layer 54 is heated by induction. The top plate 56 is
It has an octagonal shape, and its outer peripheral portion is integrally molded with the upper case so as to be covered with resin in a circular shape appropriately larger than the bottom diameter of the pot body 51.

As described above, according to this embodiment, since the outer periphery of the octagonal top plate 56 is formed integrally with the upper case 55 so as to cover the outer periphery of the top plate 56, the top plate 56 is a divisional original plate. If the corners are cut, it is possible to carry out extremely inexpensive processing as compared with a circular top plate.
Further, in general, a plate made of this type of glass-ceramic tends to have a hair crack at the time of outer peripheral processing, and the larger the machining allowance, the larger the residual stress and the lower the flat plate strength. Therefore, the octagonal top plate is stronger than the circular top plate. In the present embodiment, a regular octagon is used, but the point is to use a polygon.

[0024]

As described above, according to the induction heating cooker of the present invention, even if the pan moves, it is regulated by the frame portion, and the handle portion is not heated by the hole formed in the collar portion, and the handle By providing the portion at the lower end of the pan body, the usability can be improved without impairing the appearance. Further, by providing the thin-walled stepped portion at the base of the frame portion, the maintenance becomes much easier. Furthermore, by making the top plate polygonal and molding it integrally with the case, a sturdy and inexpensive top plate can be obtained without impairing the appearance, and the molding direction is regulated even if the top plate is printed etc. Easier to do.

As is apparent from the above, it is possible to provide a safe, convenient and inexpensive induction heating cooker with a simple structure.

[Brief description of drawings]

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

FIG. 2 is a front sectional view of the induction heating cooker.

FIG. 3 (a) is a cross-sectional view of an essential part of the induction heating cooker according to the second embodiment of the present invention, and FIG. 3 (b) is a cross-sectional view of the main part of the induction heating cooker with the pan body moved.

FIG. 4A is a plan view of a main body of an induction heating cooker according to a third embodiment of the present invention, and FIG. 4B is a front sectional view of the induction heating cooker.

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

[Explanation of symbols]

 11, 31, 51 Pan body 12, 32, 52 Standing wall 13, 33, 53 Collar portion 14 Handle portion 15 Hole portion 16 Rib 18, 35, 55 Upper case 19, 36, 56 Top plate 20, 37 Upright wall 21 , 38 Frame 39 Thin-walled step

Claims (3)

[Claims] 1. A pot body having a rising wall on the outer periphery and integrally formed with a flange portion hanging from the upper end, a heat-resistant flat plate-shaped top plate on which the pot body is placed, and a frame on the outer periphery. Has a top portion integrally formed with the top plate by resin molding, and grip portions projecting to the outer periphery at both end portions of the pot body flange portion are hung above the hole portion and the grip portion, and the frame is formed. An induction heating cooker integrally provided with a rib that is locked to the inner peripheral surface of the section. 2. A pot body having a rising wall on the outer periphery and integrally formed with a flange portion hanging down from the upper end, a heat-resistant flat plate-shaped top plate on which the pot body is placed, and an upright portion on the outer periphery. It has an upper case in which a frame portion having a wall is integrally molded with the top plate by resin molding, a thin step portion is provided at the inner peripheral root of the frame portion, and the pot body is locked at the upper end of the upright wall. Induction heating cooker. 3. A pot body having a rising wall on the outer periphery and integrally formed with a flange portion hanging down from the upper end, a heat-resistant flat plate-shaped top plate on which the pot body is mounted, and a circular outer periphery. An induction heating cooker having an upper case integrally molded with resin so as to cover the shape, and the top plate having a polygonal shape.