JP6620973B2 - Induction heating rice cooker for business use - Google Patents

Description

The present invention relates to an induction heating type rice cooking apparatus used for business purposes, and more particularly to a side cooking coil provided with a side coil for heating a side surface of a rice cooking pot.

2. Description of the Related Art Conventionally, an induction heating type is known as a commercial rice cooker that performs large-capacity rice cooking at a time. As this kind of rice cooker, for example, the one shown in Patent Document 1 is known, and a concave pot storage frame for storing the rice cooker from above is provided in the rice cooker body, and the side surface of the rice cooker is heated. The side coil is fixed to the outside of the side surface of the hook storage frame with an adhesive.

Japanese Patent No. 3276868

  By the way, the coil for the side surface of the rice cooker expands because it becomes hot at the time of rice cooking, and after the rice cooking is finished, the temperature is reduced to the normal temperature and reduced to the size before the expansion. It will be. For this reason, there was a problem that the adhesive was gradually peeled off from the side of the pot storage frame of the rice cooker, and the side coil fell off and failed.

Therefore, in view of the above-described problems, an object of the present invention is to provide an induction heating type rice cooker that prevents a failure due to the dropping of the side coil.

In order to solve the above-described problems, the present invention provides a main body having a concave pot storage frame for storing a rice cooker, a side coil disposed on the inner side surface of the pot storage frame , and heating the side surface of the rice cooker. A bottom coil that is disposed on the inner bottom surface of the pot storage frame and heats the bottom of the rice cooker, a side inverter that supplies a high-frequency current to the side coil, and a high-frequency current that is supplied to the bottom coil. In a business-use induction heating rice cooker having a bottom surface inverter and a control unit for controlling the side surface inverter and the bottom surface inverter , the side coil is wound to form a cylindrical shape, and for the side surface The side coil and the bottom coil are separately disposed so that the lower end of the coil is positioned above the bottom surface of the rice cooker when the lower end of the coil is stored in the rice cooking device, and the side coil is , To dispose by providing the side surface and spacing by a plurality of support members disposed on the inner side of Kikama housing frame, and technically take steps stuff called.

  The support member is provided with a technical means for providing a locking portion on which the side coil can be placed.

  Furthermore, the inner side of the hook storage frame to which the side coil is attached is covered from above by a detachable concave cover.

And it is preferable that the said cover is resin.

According to the first aspect of the present invention, there is provided a business having a main body having a concave pot storage frame for storing a rice cooker, and a side coil disposed on the pot storage frame for heating the side surface of the rice cooker. In the induction heating rice cooker, the side coil is disposed inside the side surface of the hook storage frame by the support member, so that the side coil does not fall off from the side surface of the pot storage frame and fails. There is no worry about peeling or dropping off due to the use of adhesive. At this time, since the support member has a gap between the side surface of the pot storage frame, even if the side coil expands and expands due to heat during cooking, the support member contacts the side surface of the pot storage frame. Therefore, the coil itself can be distorted to prevent a failure such as a break.

According to the second aspect of the present invention, the supporting member is provided with a locking portion for the side coil, and the side coil is mounted on the side surface of the hook housing frame by the locking portion, so that the mounting portion is attached. Work time can be greatly shortened, and work efficiency is improved.

According to invention of Claim 3, it was set as the structure which covers the inner side of the said hook storage frame so that attachment or detachment is possible. For this reason, even if the side coil breaks down, the side coil provided inside the side surface of the hook storage frame can be repaired by removing the cover without removing the hook storage frame from the main body, Work efficiency is improved.

According to the invention of claim 4, since the material of the cover is made of lightweight resin, the storage cover can be easily removed even if there is only one worker, and the working efficiency is further improved. Repair becomes easy.

It is a perspective view of rice cooking device 1 in the state where rice cooking pot 2 was carried in. It is a perspective view of the state which carried out the rice cooking pot from the rice cooker 1. FIG. It is a perspective view in the state where a pot storage frame cover was removed from rice cooker 1. It is a perspective view in the state where the bottom side coil and the side coil were removed from the rice cooker 1. It is a perspective view of a supporting member. It is an AA line partial schematic sectional drawing of the rice cooker 1. FIG. It is an AA line schematic sectional drawing of the rice cooker 1. FIG. It is a figure for demonstrating the structure of the coil for bottom faces of the rice cooking apparatus 1, the coil for side faces, an inverter, and a control part. It is a perspective view of another form of a support member. It is a perspective view of another form of a support member.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a commercial induction heating rice cooker 1 according to an embodiment of the present invention, and shows a state where a rice cooking pot 2 with a lid 3 is housed. FIG. 2 shows a state in which the rice cooker 2 is unloaded from the rice cooker 1. As shown in FIG.1 and FIG.2, the rice cooking apparatus 1 is a box-shaped thing, and is provided with the top plate 7 which covers an upper surface above. An opening 8 for carrying the rice cooker 2 is provided in the center of the top plate 7, and the rice cooker 2 is carried into the opening 8 during rice cooking. A concave cover 5 is arranged in the opening 8 so as to surround the rice cooker 2 that has been carried in. The shape of the cover 5 is preferably the same shape as the rice cooker 2. A temperature sensor for measuring the temperature of the rice cooker 2 is provided at the bottom of the cover 5.

  FIG. 3 is a view showing the rice cooking device 1 with the cover 5 removed. Below the cover 5, bottom coils 11, 12 and a side coil 13 for heating the rice cooker 2 at the time of rice cooking are arranged so as to surround the rice cooker 2 that has been carried in. In addition, a plurality of ferrites 14 are arranged to form a magnetic path for induction heating and reduce leakage magnetic flux. The ferrite 14 is attached to the inside of the hook housing frame 15 with an adhesive or the like. Incidentally, as shown in the partial cross-sectional view of FIG. 6, the pot storage frame 15 has the same shape as the rice cooking pot 2. In the description of the pot storage frame 15 of the present invention, the surface facing the rice cooker 2 is the inside.

  The bottom coil 11 is disposed at the center of the bottom surface of the hook storage frame 15, and the bottom coil 12 is the bottom surface of the hook storage frame 15 and is located farther from the center than the bottom coil 11. Has been placed. The side coil 13 is disposed on the inner side of the hook storage frame 15 by one or two or more support members 16 so as not to contact the side face of the hook storage frame 15 with a gap therebetween. Yes.

The support member 16 is attached to the inside of the side surface of the hook storage frame 15 by a method such as screwing. Resin or the like can be used for the material of the support member 16, and it is particularly desirable to use a heat-resistant resin. The support member 16 has a shape as shown in FIG. 5 and includes a locking portion 17 on which the side coil 13 is placed below. A fixing portion 18 for fixing the upper end of the side coil 13 is provided above. Further, the width of the support member 16 is not particularly limited. FIG. 4 is a view showing a state in which the bottom surface coils 11, 12 and the side surface coil 13 are removed from the hook storage frame 15, and is a view showing the support member 16 attached to the hook storage frame 15.

FIG. 7 is a schematic cross-sectional view of the rice cooking device 1 (the rice cooking pot 2 is not carried in). A pot storage frame 15 is fitted into the opening 8 provided above the rice cooker 1 shown in FIG. 2, and the bottom coils 11 and 12 and the side coils 13 for heating the rice cooker 2 inside thereof. These coils are covered with a cover 5 from above. Therefore, the rice cooking device 1 has a structure in which the rice cooking pot 2 is carried inside the cover 5. Further, the hook storage frame 15 is fixed to the main body 4 by a screwing method or the like, and the cover 5 is detachably attached to the main body 4, and the bottom coils 11, 12, the side coils 13, etc. At the time of maintenance, it is attached to the top plate 8 with screws (not shown) so that it can be easily removed from the main body 4.

The bottom coils 11 and 12 are connected to an inverter 19, and a high frequency current is passed from the inverter 19 to the bottom coils 11 and 12. The side coil 13 is connected to the inverter 20, and a high frequency current is passed from the inverter 20 to the side coil 13. Moreover, as shown in FIG. 8, the inverters 19 and 20 are controlled by the control part 21, and based on the preset rice cooking pattern, the high frequency current to the bottom coil 11,12 and the side coil 13 is controlled. Energize.

The side coil 13 is not directly attached to the side surface 22 of the hook housing frame 15 but is attached via the support member 16. For this reason, a gap H exists between the side coil 13 and the side surface 22. The size of the gap can be appropriately changed depending on the thickness of the support member 16. The said thickness is the length of the part shown with the code | symbol H in FIG. A locking portion 17 is provided below the support member 16, and the side coil 13 is placed on the hook housing frame 16 by placing the lower end of the side coil 13 on the locking portion 17. Install. Further, it is preferable to provide a fixing portion 18 above the support member 17 and fix the side coil 13 placed on the locking portion 17 so as to be sandwiched between the locking portion 17 and the fixing portion 18. By providing the fixing portion 18, the side coil 13 can be securely attached to the side surface 22 of the hook housing frame 15, and the side coil 13 can be prevented from dropping from the side surface 22. By the way, the side coil 13 is a cylindrical winding coil, and needs to be prepared in advance so that it can be placed on the support member 16 when it is disposed in the hook storage frame 15. What is necessary is just to set the winding number etc. of a coil suitably according to the rice cooking capability of the rice cooking apparatus 1. FIG.

The operation of the above configuration will be described.
As shown in FIG. 4, the side coil 13 is mounted on the support member 16 from above and attached to the hook housing frame, so that it is not necessary to use an adhesive for the attachment. For this reason, the time for attaching the side coil 13 can be greatly shortened, and the operation itself becomes extremely simple, thereby improving the work efficiency.

Moreover, since the coil 13 for side surfaces is attached by providing a clearance gap between the side surface 22 and the side surface 22 without contacting the side surface 22 of the pot storage frame 15 by the support member 16, it faces toward the side surface 22 by the high temperature at the time of rice cooking. Even if it expands, it does not contact the side surface 22. For this reason, it is possible to prevent the side coil from being distorted by the contact and causing a failure such as bending. In addition, the hook storage frame 15 can also be prevented from malfunctioning due to this contact.

Next, the rice cooker 1 has a cover 5 attached to the opening 8 into which the rice cooker 2 is carried in order to cover the bottom coils 11 and 12 and the side coil 13 from above. The cover 5 is detachably attached from the rice cooker 1. Therefore, when a failure occurs in the bottom coil 11, 12 or the side coil 13, the bottom coil 11, 12 is simply removed by removing the cover 5 without removing the heavy pot storage frame 15 from the rice cooking device 1. And the side coil 13 can be repaired directly.

Moreover, the cover 5 can be reduced in weight by not attaching any components such as a coil. Therefore, since the operator can remove the cover 5 by himself, the rice cooker 1 can be repaired by himself. Therefore, the labor cost required for maintenance can be reduced. In order to reduce the weight of the cover 5, the cover 5 is preferably made of a light material such as resin. In particular, it is preferable to make it with a heat-resistant resin in consideration of the high temperature rice cooking.

  For example, the support member 16 may have a shape as shown in FIGS. 10 and 11 other than the structure in which the locking portion 17 is provided below the support member 16. The support member 30 shown in FIG. 9 is provided with the locking portion 17 above the support member 30, and the support member 31 shown in FIG. 10 has the locking portion 17 in the middle in the height direction of the support member 31. It is provided in the position.

In addition, the method of attaching the side coil 13 by the support member 16 is not limited to the method of placing the lower end portion of the side coil 13 on the locking portion 17, and for example, on the outside of the side coil 13, A method of providing such a flange (hook) and hooking the flange on the locking portion 17 of the support member 17, 30 or 31 may be used.

Since the diameter of the side coil 13 is the longest length (width) of the side coil 13, the cylindrical side coil 13 can be attached to the hook storage frame 15 with a plurality of support members so that the manhole cover Just as it doesn't fall, it doesn't fall.

By the way, the shape of the side coil 13 does not need to be cylindrical, and may be other shapes such as a rectangular shape.

  The present invention is not limited to the above-described embodiment, and it goes without saying that the configuration can be appropriately changed without departing from the scope of the invention.

  The present invention is not limited to a rice cooking device, and can be used for an induction heating type device using a heating coil as a heat source, and is particularly useful when a heating coil is attached to the side surface of the device. is there.

DESCRIPTION OF SYMBOLS 1 Rice cooker 2 Rice cooker 3 Lid 4 Rice cooker main body 5 Cover 6 Temperature sensor 7 Top plate 8 Opening part 11 Bottom coil 12 Bottom coil 13 Side coil 14 Ferrite 15 Pot storage frame 16 Support member 17 Locking part 18 Fixed part 19 Inverter 20 Inverter 21 Control part 22 Side surface 30 of the hook storage frame Support member 31 Support member

Claims (4)

A main body with a concave pot storage frame for storing the rice cooker;
A coil for the side surface disposed on the inner side surface of the pot storage frame and heating the side surface of the rice cooker;
A coil for the bottom surface disposed on the inner bottom surface of the pot storage frame and heating the bottom surface of the rice cooker;
And side inverter for applying a high frequency current to the side coil,
A bottom surface inverter for passing a high-frequency current through the bottom surface coil;
A controller that controls the inverter for the side surface and the inverter for the bottom surface ;
In a commercial induction heating rice cooker having
The side coil and the bottom surface are formed such that the side coil is wound to form a cylindrical shape, and the lower end of the side coil is positioned higher than the bottom surface of the rice cooker when stored in the rice cooking apparatus. And separate the coil for use,
The induction heating rice cooker for business use , wherein the side coil is disposed with a space from the side surface by a plurality of support members disposed inside the side surface of the hook storage frame. The induction heating rice cooker for business use according to claim 1, wherein the support member is provided with a locking portion on which the side coil can be placed. The induction heating rice cooker for business use according to any one of claims 1 and 2, wherein an inner side of the hook storage frame is covered from above by a detachable concave cover. The business-use induction heating rice cooker according to claim 3, wherein the cover is made of resin.

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