JP5542882B2 - Cooker - Google Patents

Description

  The present invention relates to a heating cooker.

  The heating vessel of the heating cooker is detachable from the main body, and induction-heated by a coil provided inside the main body to cook delicious rice, so it is induced by taking into account inductivity, magnetism, thermal conductivity, heat capacity, etc. While using a heating member, the coating which considered rust suppression, suppression of burning, and washability is made. When the heating container is made of metal, a composite material in which a magnetic material such as stainless steel and a highly heat conductive / nonmagnetic material such as aluminum or copper are joined is used to efficiently convert the induced current into heat, Ingenuity has been taken to transfer heat to rice and water. In the case of a non-metallic product, conductive carbon powder is used as a material, which is manufactured by high-temperature firing for a long time and can be induction-heated. That is, the induction heating member used for the container is created by investing many resources and costs.

  When the above-mentioned heating container is set to the rice cooker body or washed, if it is accidentally dropped and the surface is damaged or deformed, the function of deliciously cooking rice is impaired, so the entire heating container is replaced. Need arises. In addition, the heating container needs to have a sufficient size with respect to the amount of cooked rice in order to avoid spilling during cooking. A large and heavy heating container has a large heat capacity, and since the heating container after use maintains a high temperature for a long time, it is difficult for the user to take out the heating container.

Furthermore, as described above, the metal heating container is often a composite material and is difficult to recycle as a single material. Non-metallic carbon is also thermosetting, so its properties are different from the raw material before it is processed into a heated container shape. Is difficult.
The above is a factor that deteriorates handling and increases resource consumption.
In recent years, a rice cooker that pursues the deliciousness of rice by controlling the convection and boiling conditions by combining a heating coil provided opposite the side of the heating vessel and a heating coil provided separately on the bottom surface. Widely used.

  Therefore, there is a need for a heating cooker that is easy to handle, has excellent resource savings, and has a structure that can cook delicious rice. However, as a conventional technique, the outer surface of the heating container is protected with resin (for example, Patent Document 1), flange There have been devised ones in which resin parts are attached to the part and the flange part is made smaller (for example, Patent Document 2), and the inner lid part is made of resin with carbon inserted (for example, Patent Document 3).

Japanese Patent No. 4161220 (see, for example, [0007], [0012], etc.) JP 2000-116509 A (see, for example, [0010], [0016], etc.) Japanese Patent No. 4830641 (see, for example, [0010], [0018], etc.)

In the technique described in Patent Document 1, the heating container has a structure that is not easily broken, and the handleability is good. However, it does not change the size of the heating container itself that is induction-heated. In the unlikely event that it is necessary to replace the container, the waste of resources is large, and it is not structured to cook delicious rice. . The technique described in Patent Document 2 has a structure in which the heating container is easy to hold, and the handleability is good. However, although the flange portion is small, it does not change the size of the heating container itself that is induction-heated, and it cannot be said that it is excellent in resource saving. Also, it is not structured to cook delicious rice. The technique described in Patent Document 3 has a structure in which the induction heating member is made smaller with respect to the size of the lid, but there is no mention of resource saving. Moreover, although it has a structure with good thermal conductivity, there is no mention of a convection promoting structure, and it cannot be said that it is a structure where delicious rice can be cooked. Moreover, although it has good corrosion resistance, it cannot be said that it is easy to handle.
As described above, none of the conventional techniques includes all of the above three. Rice cookers are in great demand mainly in the Asian region, but in the future, when large and heavy cookers for rice cookers that pursue deliciousness are produced in large quantities, not only the resource consumption of the containers themselves, but also the transportation volume and weight As resource consumption increases with the increase, it is needless to say that a means for avoiding these and responding to demands for resource saving and energy saving is required.

  The present invention has been made in order to solve the above-described problems, and an object thereof is to provide a heating cooker having a good handleability, excellent resource saving, and a structure capable of cooking delicious rice.

A heating cooker according to the present invention includes a heating container formed of a non-magnetic material, a main body that detachably stores the heating container, an induced heating member provided in the heating container, an induction heating member provided in the main body, A coil for induction heating the heating member, and a casing that constitutes the inner wall of the main body and houses the heating container are provided. The heating container is provided with a flange portion, and the upper portion of the casing is installed on the main body so as to support the flange portion. In such a state, the induction heating member and the coil are provided so as to face each other, the heating container is formed of a soft heat-resistant material, and the induction heating member is provided on at least a part of the outer periphery of the heating container. It is provided with a support part for storing inside .

  According to the heating cooker according to the present invention, it is possible to combine a structure with good handleability, excellent resource saving, and cooking delicious rice.

It is a cross-sectional schematic diagram which shows the structure of the rice cooker which concerns on Embodiment 1 of this invention. It is a cross-sectional schematic diagram which shows the structure of the rice cooker which concerns on Embodiment 2 of this invention. It is a cross-sectional schematic diagram which shows the structure of the rice cooker which concerns on Embodiment 3 of this invention. It is a cross-sectional schematic diagram which shows the structure of the rice cooker which concerns on Embodiment 4 of this invention. It is a cross-sectional schematic diagram which shows the structure of the rice cooker which concerns on Embodiment 5 of this invention. It is a cross-sectional schematic diagram which shows the structure of the rice cooker which concerns on Embodiment 6 of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. It should be noted that the present invention is not limited by the form of this figure, and it does not depend on the illustrated structure as long as it has a cross-sectional shape that can provide the effects described below.

Embodiment 1 FIG.
FIG. 1 is a schematic cross-sectional view showing the configuration of the rice cooker according to Embodiment 1 of the present invention. The heating container main body 1 is formed in a bottomed cylindrical shape, and is provided with a support portion 12 for storing the induction heating member 2. The shape of the main body 3 may be a bottomed cylindrical shape or a cube like the heating container main body 1. In FIG. 1, the shape of the support portion on the upper side is provided in a ring shape so as to cover the cylindrical side surface of the bottomed cylindrical heating container. Moreover, the induction heating member 2 provided in the inside also has the same shape as this support part. On the other hand, the shape of the support member in the lower part of FIG. 1 is provided so as to cover the circular bottom part of the bottomed cylindrical heating container. Moreover, the induction heating member 2 provided in the inside also has the same shape as this support part. Further, the heating container body 1 is provided with a flange portion 11, and is disposed so as to be fitted to the upper portion of the hook casing 31 of the body 3 when the heating container body 1 is installed on the body 3. The heating container main body 1 is detachable from the main body 3. Although not shown in FIG. 1, an inner lid for closing the upper surface of the heating container main body 1 is provided on the upper part of the heating container main body 1 like a normal rice cooker. An upper lid of the main body 3 is provided to cover the inner lid. A coil 4 is provided on the bottom, protrusion, and side of the main body 3. When the heating container main body 1 is installed in the main body 3, the induction heating member 2 is arranged at a position facing each coil 4 (the bottom coil 41, the protrusion coil 42, and the side coil 43). . That is, the support unit 12 is provided in the heating container main body 1 so that when the heating container main body 1 is installed in the main body 3, the induction heating member 2 and the coil 4 are positioned to face each other. During cooking, when the coil 4 is energized by a power source and power control means (not shown), the induction heating member 2 generates heat, and this heat is transmitted to the heating container body 1 to enter the heating container body 1. Heat ingredients such as rice and water. The power control means performs predetermined cooking by performing power control based on information stored in advance in the microcomputer and temperature information of the thermistor 5.

  It is desirable that the heating container main body 1 has a coating or a skin layer on the inside so that foods such as rice which are the contents are not easily attached and are easy to clean. In addition, it is desirable to be formed of a material that can withstand at least 100 ° C., preferably 150 ° C. Examples of the material include silicon resin and rubber, which are soft resins, hard polypropylene, polyphenyl sulfide, and the like. In particular, when the heating container body 1 and the support portion 12 are formed of a soft resin such as silicon resin, the induction heating member 2 is covered with the soft resin, so that the risk of the induction heating member 2 being damaged during handling can be reduced. . Further, since the induction heating member 2 formed of a hard material such as metal or carbon is connected with a soft resin, the resin bends when the heating container body 1 is dropped. Can reduce the impact and avoid stress concentration leading to deformation and cracking. Moreover, the flange part 11 which is easy to generate a crack and a chip | tip conventionally can be made hard to be damaged by resinating.

By setting it as the above structures, the usage-amount of the to-be-induced heating member 2 can be suppressed. That is, the conventional heating container main body is configured using the induction heating member as a whole, but in the first embodiment, the heating container main body 1 is formed of a non-magnetic substance, and the heating container main body is formed. By configuring the support portion 12 so as to cover only a part of 1 with the induction heating member 2, the usage amount of the induction heating member 2 can be suppressed. Further, by providing the support portion 12 that covers the induction heating member 2 with a resin, it is possible to prevent the induction heating member 2 from being damaged. Moreover, while a heat-emitting part can be disperse | distributed to the wide range of the heating container main body 1, a convection can be accelerated | stimulated and a heat transfer can be improved, As a result, rice can be cooked deliciously. In addition, by operating the bottom coil 41 and the protrusion coil 42 independently, more complicated and efficient convection can be performed.
From the above, it is possible to realize a rice cooker that has good handling properties, excellent resource saving, and a structure that can cook delicious rice.

  In FIG. 1, a protrusion is provided at the center of the bottom surface of the induction heating member 2, and a protrusion shape is formed in the hook casing 31 and the heating container body 1 in accordance with this, and the protrusion coil 42 is formed inside the protrusion. However, the present invention is not limited to such a form. The induction heating member 2 and the coil 4 are paired so that a part of the surface of the heating container body 1 is induction-heated even in the combination of only the bottom part or the bottom part and either the side part or the protrusion part. If the member 2 is provided so as to cover, the above-described effects can be obtained.

  However, for example, when the coil 4 is provided only in the vicinity of the bottom portion, the generated magnetic field decreases according to the distance between the induction heating member 2 and the coil 4, so that the vicinity of the upper portion of the heating container body 1 is induction-heated. In other words, the heat generating portion expands due to heat conduction inside the heating container main body 1 and the induction heating member 2. Here, when a resin having low thermal conductivity is used as the material of the heating container body 1, heat transfer to the upper part of the heating container body 1 hardly occurs. Therefore, in order to create convection for efficient heating and suppress temperature unevenness, the induction heating member 2 covers at least two of the bottom, side, and protrusions of the heating container body 1. It is desirable to be provided. In order to balance cooking of delicious rice and resource saving, the ratio (coverage) of the surface area of the induction heating member 2 to the surface area of the heating container body 1 is approximately 10% to 70%. It has been found by actual measurement and the like.

  Further, as shown in FIG. 1, the thermistor 5 is provided at the bottom of the main body 3, and the thermistor 5 and the induction heating member 2 can be in direct contact with each other by opening a hole in a part of the bottom of the support portion 12. It is desirable to have By arranging in this way, the temperature of the induction heating member 2 can be measured with high accuracy, temperature control by a heating coil control means (not shown) is possible, Excessive rise and fall can be prevented.

Embodiment 2. FIG.
In the first embodiment, the example in which the support portion 12 that houses the induction heating member 2 is fixed to the heating container main body 1 has been described. In the second embodiment, an example will be described in which the support portion 12 in which the induction heating member 2 is housed is detachable from the heating container body 1 and the heating container body 1 itself is foldable.
FIG. 2 is a schematic cross-sectional view showing the configuration of the rice cooker according to Embodiment 2 of the present invention. In FIG. 2, an induced heating member (abdominal ring) 2 attached to the abdomen of the heating container body 1 and an induced heating member (bottom face) 2 attached to the bottom surface of the heating container body 1 are provided so as to be removable from the heating container body 1. It has been. That is, the heating container main body 1 is provided with a support portion 12 having a large opening, and is formed of a soft silicone resin, so that the induction heating member 2 can be easily attached and detached. By adopting such a configuration, even if the heating container body 1 is damaged, or there is a problem such as coloring or odor adhesion, it is only necessary to replace the heating container body 1, and it is formed of expensive metal or carbon. The induction heating member 2 to be used can be replaced with the heating container body 1 and reused, so that it is not wasted. Moreover, the heating container main body 1 has a structure that can be folded at the side of the body as shown in FIG. If it can be folded in this way, after the soft heating container body 1 is washed, it can be stored without taking up space. In addition, it is possible to reduce the stock of replacement parts in manufacturers and retail stores.
From the above, in addition to being able to realize a rice cooker that is easy to handle, has excellent resource savings, and has a structure that can cook delicious rice, the induction heating member 2 can be removed and reused as described above. By making it possible, the waste of the induction heating member 2 can be suppressed, thereby further contributing to resource saving. Moreover, since the deformation | transformation of the heating container main body 1 is possible, handling will become a better thing.

Embodiment 3 FIG.
FIG. 3 is a schematic cross-sectional view showing the configuration of the rice cooker according to Embodiment 3 of the present invention. In FIG. 3, the main body 3 without the side coil 43 is assumed.
The induction heating member 2 of the third embodiment has a rectangular petal portion 21 so as to cover the side surface of the heating container body 1 by being thermally connected to the induction heating member on the bottom surface and the induction heating member on the bottom surface. Is provided. Thus, since the petal portion 21 of the induced heating member 2 is formed in a petal shape extending from the bottom surface to the side surface, the bottom surface of the heating container body 1 is formed by the coil 4 (bottom coil 41 and protrusion coil 42). When heating is performed at, the heat generated by the induction heating member 2 facing the bottom surface is transmitted to the petal portion 21 so that the side surface of the heating container body 1 can be heated. By setting it as such a form, it becomes possible to form the convection of a raise direction inside the petal part 21. FIG. Further, by forming the central protrusion 22 together with the bottom surface of the induction heating member 2, a flow that rises from the petal portion 21 and the central protrusion 22 is formed, and a flow that descends to the side face without the petal portion 21. Thus, efficient convection is possible.
From the above, it is possible to realize a rice cooker that has good handling properties, excellent resource saving, and has a structure that can cook delicious rice without the side coil 43 in the main body 3.

Embodiment 4 FIG.
In the first to third embodiments, the example in which the induction heating member 2 is provided outside the heating container main body 1 has been described. However, in the fourth embodiment, the induction heating member 2 is provided inside the lower part of the heating container main body 1, and further on An example in which the second container is provided will be described.
FIG. 4 is a schematic cross-sectional view showing the configuration of the rice cooker according to Embodiment 4 of the present invention. The induction heating member 2 is installed inside the heating container body 1 and is fixed by being fitted to a stopper portion 13 that is also formed inside the heating container body 1. That is, for example, as shown in the diagram on the right side of FIG. 4, first, the upper surface side of the heating container main body 1 is opened to widen the circumference where the stopper portion 13 is provided. Thereby, the induction heating member 2 is fixed between the bottom surface of the heating container main body 1 and the stopper portion 13. That is, the induction heating member 2 is fixed to the heating container body 1 by the upper end of the periphery of the induction heating member 2 being in contact with the lower surface of the stopper portion 13. Moreover, this stopper part 13 contributes also to installing the 2nd container 14 which has a hole in a bottom face on this stopper part 13. FIG. By adopting such a form, for example, while performing another cooking with the induction heating member 2 and the second container 14 or boiling hot water with the induction heating member 2, on the induction heating member 2, Further, by installing the second container 14, the second container 14 is heated by the induction heating member 2, so that steamed dishes can be made in the second container 14. In addition, the material of the 2nd container 14 may be the same as that of the heating container main body 1, and may differ.
From the above, in addition to being able to realize a rice cooker that is easy to handle, has excellent resource-saving properties, and has a structure that can cook delicious rice, variations in cooking can be increased.

Embodiment 5 FIG.
FIG. 5 is a schematic cross-sectional view showing the configuration of the rice cooker according to Embodiment 5 of the present invention. The fifth embodiment is a modification of the fourth embodiment. In the fourth embodiment, the central protrusion 22 of the induction heating member 2 is not in contact with the bottom surface of the second container 14. 5, the central protrusion 22 of the induction heating member 2 is formed so as to be in contact with the bottom surface of the second container 14. Therefore, the heat of the induction heating member 2 is easily conducted to the second container 14. In this embodiment, it is suitable for steamed dishes that do not use water. After only the ingredients such as meat and vegetables are put into the induction heating member 2, the ingredients are brought into contact with each other by covering with the second container 14. It is possible to heat the bottom surface portion of the induction heating member 2 and the bottom portion of the second container 14 corresponding to the lid. The smaller the gap between the two when the induction heating member 2 is installed inside the heating container body 1, the better the heat conduction, and the more difficult the blow-off falls to the shuttle casing 31 through the gap.

In FIG. 5, the stopper portion 13 holding the induction heating member 2 is pressed by the weight of the second container 14, and as a result, the gap between the heating container body 1 and the induction heating member 2 is sealed and blown down. It becomes the structure which can suppress. Moreover, since the center part of the heating container main body 1 is the shape which opened, the thermistor 5 can contact the bottom face of the to-be-induced heating member 2 directly, and can control the temperature of a heating part accurately now. ing.
From the above, in addition to being able to realize a rice cooker that has good handleability, excellent resource saving, and a structure that can cook delicious rice, it is possible to increase the number of cooking variations and to accurately heat the temperature of the heated part By controlling it, it becomes possible to cook even more delicious rice.

Embodiment 6 FIG.
In the sixth embodiment, a structure for improving the heat insulation of the heating container body 1 will be described.
FIG. 6 is a schematic cross-sectional view showing the configuration of the rice cooker according to Embodiment 6 of the present invention. Here, the side surface of the heating container main body 1 has a two-layer structure, and a wall 123 is formed in order to maintain a space between the two layers, and air, a heat insulating material, or a heat storage material is provided in this space. Furthermore, when a part of the bottom surface of the induction heating member 2 and the fitting portion 122 provided on the support portion 12 are fitted, the gap between the bottom surface on the side surface side of the induction heating member 2 and the support portion 12 is increased. Are provided with an air layer, which forms a heat insulation / heat storage part 121 and suppresses heat leakage from the side surface.

If the temperature of a part of the inner wall of the heating container main body 1 falls below the dew point when the rice cooking process is finished and the heat insulation is started, condensation occurs in this part, and it falls on the rice and the taste is lowered. Sometimes. In the present embodiment, a part of the side surface of the heating container body 1 has no heat source, and such a temperature-decreasing portion is easily formed. Therefore, it is desirable that the resin portion of the heating container main body 1 has a low thermal conductivity and further increases the heat insulation as shown in FIG. In addition, by using a material (such as an olefin-based heat storage material) that undergoes a phase transition at 60 to 80 ° C. as the heat storage material, heat can be stored in the initial stage of rice cooking, and temperature reduction during the heat retention can be suppressed.
From the above, in addition to being able to realize a rice cooker that has good handleability, excellent resource saving, and a structure that can cook delicious rice, it also reduces the taste of rice by suppressing the temperature drop during heat insulation Can be suppressed.

  Needless to say, Embodiments 1 to 6 may be combined as appropriate.

  DESCRIPTION OF SYMBOLS 1 Heating container main body, 2 Inductive heating member, 3 Main body, 4 Coil, 5 Thermistor, 11 Flange part, 12 Support part, 13 Stopper part, 14 2nd container, 21 Petal part, 22 Center protrusion part, 31 Pot casing, 41 bottom coil, 42 protrusion coil, 43 side coil, 121 heat insulation and heat storage part, 122 fitting part, 123 wall.

Claims (11)

A heating vessel formed of a non-magnetic material;
A main body for detachably storing the heating container;
An induction heating member provided in the heating container;
A coil provided on the main body for induction heating the induction heating member;
Comprising an inner wall of the main body, and a casing for storing the heating container;
A flange portion is formed on the heating container, and the induction heating member and the coil are positioned to face each other in a state where the upper portion of the casing is installed on the main body so as to support the flange portion. It is and,
The heating container is made of a soft heat-resistant material, and has a support portion for housing the induction heating member inside the heating container at least at a part of the outer periphery . A heating vessel formed of a non-magnetic material;
A main body for detachably storing the heating container;
An induction heating member provided in the heating container;
A coil provided on the main body for induction heating the induction heating member;
Comprising an inner wall of the main body, and a casing for storing the heating container;
A flange portion is formed on the heating container, and the induction heating member and the coil are positioned to face each other in a state where the upper portion of the casing is installed on the main body so as to support the flange portion. It is and,
The induction heating member is
Arranged inside the heating vessel,
A cooking device according to claim 1 , wherein a stopper portion that is in contact with an upper peripheral edge of the induction heating member disposed inside the heating container is formed inside the heating container . The induction heating member,
3. The heating container according to claim 1 , wherein the heating container is provided in at least two places among a bottom surface of the heating container, a protrusion that projects a substantially central portion of the bottom surface of the heating container, and a side surface of the heating container. The heating cooker described in 1. A second container different from the heating container,
The cooking device according to claim 2 or 3 , wherein the cooking device has a structure that can be detachably installed on the stopper portion. The cooking device according to claim 4 , wherein the second container has a hole in a bottom surface. When the second container is installed inside the heating container,
6. The cooking device according to claim 4 , wherein a protruding portion projecting upward from a center portion of the bottom surface of the induction heating member and a bottom surface of the second container are in contact with each other. In the induction heating member,
Protrusions that project the center of the bottom upward are provided,
The cooking device according to claim 1 or 3 , wherein a petal portion formed in a petal shape is provided on a side surface upward from the bottom surface. The side surface of the heating container has a structure of two or more layers,
The cooking device according to claim 1 or 3 , wherein air, a heat insulating material, or a heat storage material is provided between the layered structures. The cooking device according to any one of claims 1 to 8 , wherein the induction heating member is detachable from the heating container. The heating vessel is
It has a foldable structure. The heating cooker as described in any one of Claims 1-9 characterized by the above-mentioned. When the heating container is disposed inside the main body,
A thermistor provided on the bottom surface of the body, the so a part of the induction heating member contacts any of claims 1 to 10, characterized in that it has the heating vessel, or holes in the support portion The cooking device according to claim 1.

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