JP2002231430A - Electromagnetic induction heating cooking appliance for institutional use - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely fix heating coils with the simple constitution in an electromagnetic induction heating cooking appliance for heating a large cookpot by induction heating. SOLUTION: In this electromagnetic induction heating cooking appliance, the heating coils 7, 8 and 9 for induction heating are installed in an outside bottom part of the cookpot 1 having a bottom surface curved in a bowl shape. The heating coils are fixed by a ring-shaped fixing ring 16 arranged in the almost center of the outside bottom part of the cookpot, and a plurality of fixing bands 14, etc., having one end locked on the fixing ring, and the other end integrally fixed to an outer peripheral part of the cookpot.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a commercial electromagnetic induction heating cooker for heating and cooking a large amount of foodstuffs for business use or foodstuffs for business use at once.

[0002]

2. Description of the Related Art Cooking pots for business use, which use a cooking pot having a diameter of 1 meter or more to heat foods sold at convenience stores and school meals in large quantities at a time. When a heating coil for induction heating is attached to the outer bottom of the cooking pot 30, for example, as shown in FIG. 5 and FIG. It is fixedly supported by a plurality of support plates 32, which are formed of molded resin materials radially arranged below the cooking pan.

The support plates 32 are provided with grooves 3 in the support portions of the heating coils 31 as shown in FIG.
Are provided and fixed by locking the heating coils 31 in these grooves.
Is arranged radially at the bottom of the cooking pot 30, so that the distance between the support plates 32 becomes longer toward the outside of the cooking pot 30, and when the heating coil 31 is turned on to start cooking,
As the cooking progresses, the temperature of the heating coil 31 rises and softens, deforms into a bow shape due to its own weight, changes the distance from the bottom of the cooking pot, and this causes a problem that uneven heating tends to occur. is there.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electromagnetic induction heating cooker for business use using a relatively large cooking pot, and to surely fix a heating coil with a simple configuration. It is.

[0005]

According to the present invention, there is provided a cooking pot in which an object to be cooked is stored and heated, and a heating coil for induction heating is mounted on an outer bottom of a cooking pot whose bottom is curved in a bowl shape. A heating coil, a ring-shaped fixing ring made of a non-magnetic material disposed substantially at the center of the outer bottom of the cooking pot; And fixed by a fixing band made of a non-magnetic material.

Further, the present invention is provided with a biasing means for biasing the other end of the fixed band toward the outside in the radial direction of the cooking pot in an adjustable manner.

Further, according to the present invention, the outer bottom of the cooking pot is surrounded by a case, and the urging means is integrally fixed to the other end of the fixing band, and the tip is locked to the receiving metal. And a tightening bolt screwed upward on the side wall of the case in this state.

Further, the present invention comprises an insulating material having elasticity interposed between the outer bottom surface of the cooking pot and the heating coil.

Further, in the present invention, an insulating rubber material is interposed between the heating coil and the fixing band.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of the present invention will be described with reference to FIG. 1. Reference numeral 1 denotes a bowl-shaped cooking pot formed by pressing a dielectric material such as stainless steel SUS403 material. The food is stored and cooked by heating.

The cooking pot 1 does not necessarily need to be formed of a dielectric material. The pot itself is made of, for example, a SUS304-based material which is relatively easy to process, and the cooking is performed by spraying iron powder on the outer bottom. The pot 1 may be configured to be suitable for electromagnetic induction heating, or a clad material or the like used for other electromagnetic induction heating may be used.

Further, the cooking pot 1 is surrounded by a case 3 integrally fixed to the cooking pot by welding or the like, and forms a cooking pot together with the case. Are connected, and these rotating shafts are supported by a pair of left and right pedestals 5, 6.

On the other hand, on the outer bottom of the cooking pot 1, for example, a ring-shaped heating coil 7, divided into three groups,
8 and 9 are mounted approximately concentrically with the outer bottom surface of the cooking pot 1 via a heat insulating material 10 made of a non-magnetic material.

A drive motor 11 for rotating the rotating shafts 4 and 4 and a control circuit 12 for controlling power supply to the drive motor and the heating coils 7, 8, 9 and the like are provided in the pedestal 6.
The storage is arranged.

2 and 3, the heating coils 7, 8, 9 and the heat insulating material 10 are pressed against the outer bottom surface 13 of the cooking pot 1, as shown in FIGS. Fix
A plurality of fixed bands 14 made of aluminum or SUS304 non-magnetic metal plate are mounted.

In the above embodiment, the four fixed bands 14 are formed. However, the present invention is not limited to this, and may be appropriately increased or decreased in consideration of the width of the fixed band.

The fixed band 14 has a band shape having a predetermined width, and one end 15 is bent into a U-shape to form a ring-like shape which is disposed substantially at the center of the outer bottom portion of the cooking pot 1. Locked to the fixing ring 16 and the other ends of the receiving members 17... Are fixed to the bolts 18.
By urging the cooking pan 1 in the radial direction by pressing the fixing band 14 against the outer bottom of the cooking pan 1, the heating coils 7, 8, and 9 are securely fixed. It constitutes urging means.

The fixing ring 16 is made of a non-magnetic material such as aluminum or ceramic, and the tightening bolts 19 are attached to a plurality of support fittings 20 fixed to the side wall of the case 3 upward. , And the tips of the tightening bolts 19 are locked to the metal fittings 17.

With these configurations, the fastening bolt 19
Is tightened to raise the tip thereof, so that the fixing band 14 is pressed against the outer bottom surface 13 while being pulled out of the cooking pot 1, whereby the heating coil 7, Cooking pot 1 with a good balance of 8, 9
It can be securely fixed to the outer bottom of the car.

As a fixing method of the fixing bands 14, an adjusting screw is provided between the other ends of the fixing bands and the side wall of the case 3, or the fixing ring 16 is adjusted in circumferential length. It is possible to use a belt that can be used. However, in the former case, there is a problem that the work space at the other end of the fixed band 14 is narrow and the workability is reduced, and in the latter case, the belt is tightened. There is a problem that requires considerable power.

A rubber material 21 having elasticity and insulation is interposed between the heating coils 7, 8, 9 and the fixing bands 14, as shown in FIG. Thus, it is possible to prevent the heating coil from being damaged or short-circuited due to the contact between the fixed bands 14 and the heating coils 7, 8, 9.

In FIG. 1, reference numeral 22 denotes an operation box provided upright on the pedestal 6. An operation panel 23 for setting and inputting a cooking time, a cooking menu, and the like is provided.

When the object to be cooked is heated, the object to be cooked such as food is stored in the recess 2 of the cooking pot 1 and the cooking menu and the cooking time are input from the operation panel 23 of the operation box 22. By starting the cooking, the control circuit 12 detects these input operations and controls the energization of the heating coils 7, 8, 9 and the like, thereby performing heating cooking of the object to be cooked.

When the heating coils 7, 8, 9 are mounted on the outer bottom of the cooking pot 1, for example, the heat insulating material 10, the heating coils 7, 8, 9, rubber The materials 21 are sequentially stacked, and then the metal fittings 17.
After fixing the fixing band 14 on the rubber material 21 while fixing one end of the fixing band 14 to the fixing ring 16, the tightening bolts 19.
The heating coils 7, 8, 9 can be relatively easily pressed against the outer bottom of the cooking pot 1 by being screwed into the cooking pot 1 while being locked.

Incidentally, the assembling procedure is not limited to this, and can be appropriately changed in consideration of the working efficiency.

[0026]

According to the structure of the present invention, a heating coil for induction heating is mounted on the outer bottom of a cooking pot whose bottom is curved in a bowl shape, and the heating coil is disposed substantially at the center of the outer bottom of the cooking pot. The fixing coil and the fixing coil are fixed at one end to the fixing ring and the other end is fixed to the outer periphery of the cooking pot by a plurality of fixing bands. It can be securely fixed so as to be pressed against the bottom.

Further, according to the structure of the present invention, by providing the biasing means for biasing the other end of the fixed band so as to be adjustable, assembling and cooking are performed. Even if loosening occurs, it can be easily corrected by the biasing means.

Further, according to the structure of the present invention, the urging means is constituted by a tightening bolt screwed upward to the side wall of the case surrounding the outer bottom of the cooking pot, so that
The operation of the tightening bolt can be performed using the space generated between the case and the case, and the workability can be improved.

Further, according to the structure of the present invention, since the heat insulating material is interposed between the outer bottom surface of the cooking pot and the heating coil, even if the pot bottom of the cooking pot has irregularities at the time of molding, the irregularities are taken into account. As a result, the heat insulating material is also deformed, so that the distance between the heating coil and the pot bottom can be maintained substantially uniform, thereby preventing uneven heating.

Further, according to the structure of the present invention, the rubber material is interposed between the heating coil and the fixing band, whereby the rubber material prevents the heating coil from contacting with the fixing band, and the heating coil can be prevented from being damaged due to the contact. In addition to preventing a short circuit, the shrinkage due to the temperature change of the heating coil is absorbed, and damage to the tightening bolt and the like due to generation of stress on the fixing band due to the shrinkage can be prevented.

[Brief description of the drawings]

FIG. 1 is a front vertical sectional view showing an embodiment according to the present invention.

FIG. 2 is a longitudinal sectional view of a main part of the same.

FIG. 3 is a bottom view of the main part.

FIG. 4 is a side vertical cross-sectional view of the same main part, which is enlarged.

FIG. 5 is a front vertical sectional view showing a conventional example.

FIG. 6 is a bottom view showing a conventional example.

FIG. 7 is an enlarged side sectional view of a main part showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooking pot 7 Heating coil 8 Heating coil 9 Heating coil 10 Insulation material 14 Fixed band 16 Fixing ring 17 Metal fitting 19 Tightening bolt 21 Rubber material

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Beef Akira 3-201 Minamiyoshikata, Tottori-shi, Tottori Prefecture Sanyo Electric Co., Ltd. (72) Inventor Yoshifumi Ozaki 3-201 Minamiyoshikata, Tottori-shi, Tottori Inside Electric Co., Ltd. (72) Inventor Takuo Ohara 3-201 Minamiyoshikata, Tottori City, Tottori Pref. CC22 CC24 CC33

Claims (5)

[Claims] 1. A cooking pot in which an object to be cooked is stored and heated, and a heating coil for induction heating is mounted on an outer bottom of a cooking pot whose bottom surface is curved in a bowl shape. A fixed ring made of a non-magnetic material in the form of a ring disposed substantially at the center of the outer bottom portion, and a plurality of non-magnetic materials fixed at one end to the fixed ring and the other end integrally fixed to the outer peripheral portion of the cooking pot. An electromagnetic induction heating cooker for business use, characterized by being fixed by a fixing band. 2. The electromagnetic for business use according to claim 1, further comprising an urging means for urging the other end of the fixed band radially outward of the cooking pot so as to be adjustable. Induction heating cooker. 3. An outer bottom portion of the cooking pot is surrounded by a case, and the urging means is fixed to a metal fitting integrally fixed to the other end of the fixed band, and a tip is locked to the metal fitting. The electromagnetic induction heating cooker for business use according to claim 2, characterized in that it is constituted by a tightening bolt screwed upward to a side wall of the case in a state. 4. The electromagnetic induction heating cooking for business use according to claim 1, wherein a heat insulating material having elasticity is interposed between the outer bottom surface of the cooking pot and the heating coil. vessel. 5. The commercial induction heating cooker according to claim 1, wherein an insulating rubber material is interposed between the heating coil and the fixed band.