JP2008054713A - Induction cooking vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an induction cooking vessel capable of being used as a package in distributing an object to be heated such as a frozen or refrigerated food on the market and allowing a consumer who purchased the vessel to easily use the vessel as a steamer by an electromagnetic cooker sold on the market. <P>SOLUTION: An induction heating body 3 which generates heat as an eddy current is induced by a high-frequency magnetic field, is attached facing the bottom of a vessel body 2 in the induction cooking vessel 1. The induction heating body 3 generates heat while being immersed in water 7 injected into the vessel body 2, and an object 6 to be cooked is steamed with the steam generated in the vessel to be induction-cooked in the induction cooking vessel 1. The induction cooking vessel 1 has a fuse function part 3a which is preferentially broken in the process of exposure of the induction heating body 3 from the surface of water as water 7 is reduced when steam is generated by forming an inclined part whose outer edge side is located upward in the vertical direction in the induction heating body 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an induction heating cooking container including an induction heating heating element in which an eddy current is induced by a high frequency magnetic field generated by an electromagnetic induction heating coil provided in an electromagnetic cooker or the like and generates heat by its Joule heat.

  In recent years, instead of cooking appliances that have been mainly gas appliances, cooking appliances generally called electromagnetic cookers are used in the food and beverage industry in terms of safety, cleanliness, convenience, and economy. Not only for use, but also for general households.

  However, this type of electromagnetic cooker generates a high-frequency magnetic field by an electromagnetic induction heating coil provided inside, and heats an object to be heated by Joule heat generated by an induced eddy current. For this reason, while cooking can be performed without using flames, the cooking utensils that can be used are limited in principle, and special cooking utensils made of magnetic metals such as iron and iron enamel must be used. There was a disadvantage.

  Under such circumstances, for example, Patent Document 1 discloses an electromagnetic cooker that heats a 0.10 to 100 μm aluminum foil by eddy current generated from the electromagnetic cooker. There has been proposed a heating method using. And according to such a heating method, even if it is a nonmagnetic container, it is supposed that the contents can be heated easily using an electromagnetic cooker.

  Patent Document 2 discloses that an electromagnetic cooking container in which a conductive thin film heating element is laminated on the inner bottom surface of a non-conductive container main body, is selectively blown at the time of an erroneous operation such as emptying. An electromagnetic cooking container with a safety mechanism has been proposed in which a heat generating element is provided with a narrow portion to prevent heat generation or ignition of the container due to emptying or the like.

  Patent Document 3 proposes a clay pot in which a thin metal layer of aluminum or silver as a heating element is arranged at the bottom of a clay pot for a steaming pot so that steam cooking can be performed with an electromagnetic cooker.

  Patent Document 4 proposes an induction heating cooking container in which a bubble discharge passage through which steam escapes is formed between the heating element and the bottom inner surface of the container body.

JP 2003-325327 A JP 7-296963 A Japanese Patent Laid-Open No. 2002-238738 JP 2004-329748 A

  By the way, in recent years, foods have become instant, and various foods that can be eaten only by heating are frozen or refrigerated and distributed in the market. In such a distribution form, it is convenient if the packaging container can be used as a cooking container as it is. Among them, especially in steamed dishes such as Shumai, it is preferable to heat with steam instead of heating with a microwave oven so that the original flavor is not impaired. If the packaging container can be used as a steamer as it is, it is very convenient and convenient.

However, in Patent Document 3, a clay pot that can be cooked with an electromagnetic cooker has been proposed, but a clay pot for a steaming pot as described in Patent Document 3 is used for the above-described purposes. Is unsuitable.
Moreover, although there exists a thing as described in patent document 1 as a heating method by an electromagnetic cooker, when an air blow is accidentally carried out, an aluminum foil heats up rapidly and burns easily. There is a risk that the container will be scattered and the container may be damaged by heat. In contrast, if the electromagnetic cooking container of Patent Document 2 is applied, it seems that such a problem can be solved. However, when the present inventors have conducted intensive studies, these conventional techniques are actually used. In order to use it, we have obtained the knowledge that there are still problems to be solved.

  That is, the commercially available electromagnetic cooker prevents, for example, the high frequency magnetic field generated by the electromagnetic induction heating coil from heating the table when the table on which the electromagnetic cooker is installed is made of metal. Therefore, a high frequency magnetic field is controlled by arranging a ferrite core below the electromagnetic induction heating coil. For this reason, when it is going to use the container for electromagnetic cookers of patent document 2 with a commercially available electromagnetic cooker, the heat generating body laminated | stacked on the inner bottom face of the container main body has the non-uniformity in which the magnetic flux density became high around the ferrite core. The eddy current density induced in the heating element is exposed to a high-frequency magnetic field having a magnetic flux density distribution. It will be different depending on where you put.

Therefore, the narrow portion only needs to be located where the magnetic flux density is increased by the ferrite core, but if not, the container is placed so that the heating element melts away from the narrow portion. Depending on the method, the narrow part may melt or not, and the safety mechanism may not function stably.
In addition, when water in contact with the heating element boils, the heating element is vigorously shaken by the generated bubbles and the position thereof is not fixed, but this also makes the safety mechanism unstable. Patent Document 4 proposes an induction heating cooking container in which a bubble discharge passage is formed. However, by merely forming such a bubble discharge passage, the heating element does not shake when water boils. It is difficult to do so.

  The present invention has been made in view of the above circumstances, and can be used as a packaging container for distributing a heating target such as a frozen or refrigerated food product to the market. An object of the present invention is to provide an induction heating cooking container that can be used as a steamer with a commercially available electromagnetic cooker as it is and can be used safely.

  An induction heating cooking container according to the present invention that solves the above-mentioned problem is that an induction heating heating element that generates heat when an eddy current is induced by a high-frequency magnetic field is attached to face the bottom surface of the container body, and is injected into the container body. When the induction heating heating element is heated in a state of being immersed in water, the induction heating cooking container is adapted to steam and cook the cooking object with steam generated in the container, wherein the induction heating heating By inclining at least a part of the body with respect to a horizontal plane and forming an inclined portion in which the outer edge side is positioned in the upper vertical direction in the induction heating heating element, the water injected with the generation of steam is reduced, In the process in which the induction heating heating element is exposed from the water surface, the induction heating heating element is provided with a fuse function part that preferentially breaks the inclined portion.

  The induction cooking container according to the present invention having such a configuration can be suitably used as a packaging container when a heating object such as frozen or refrigerated food is distributed to the market, and is safe and easy. Moreover, it can be used as a steamer by an electromagnetic cooker. And, in use, by arbitrarily adjusting the amount of water to be injected, the fuse function part breaks when a predetermined time has elapsed since the induction heating heating element is heated, and the cooking is automatically ended. As well as being able to break the fuse function part with higher priority, it is possible to more accurately manage the time until cooking is finished.

Moreover, the induction heating cooking vessel which concerns on this invention can be set as the structure from which the length from the outer edge part side to the center part of the said induction heating heating element is relatively short in the said fuse function part. .
With such a configuration, the density of eddy currents induced in the induction heating heating element is biased, the eddy current density in the fuse function part is the highest, and by increasing the heat generation amount, more reliably, The fuse function part can be broken in preference to others.

Moreover, the induction heating cooking container which concerns on this invention can be set as the structure which attached the said induction heating heat generating body so that tension | tensile_strength may act on the said fuse function part at least.
With such a configuration, the fuse function part is urged to break, and the fuse function part can be broken more preferentially.

  In addition, the induction heating cooking container according to the present invention more specifically forms a step portion along the inner periphery of the container main body and uses steam on the step portion when used as a steamer by an electromagnetic cooker. A tray in which holes are formed can be supported, and a cooking target can be placed on the tray.

  In addition, the induction heating cooking container according to the present invention is configured to fit the outer peripheral edge portion of the tray to the step portion and attach the outer peripheral edge portion of the tray to the step portion when attaching the induction heating heating element to the container body. The induction heating heating element can be held between the two.

Moreover, the induction heating cooking container which concerns on this invention has piled up the sheet | seat material formed by obstruct | occluding a vapor hole with the thermoplastic resin of melting | fusing point 100 degrees C or less on the said induction heating heat generating body so that it may be located in the said tray side. And a structure in which a sealed space is formed between the stepped portion and the outer peripheral edge of the tray, and a predetermined amount of water is sealed in the sealed space, or a thermoplastic resin having a melting point of 100 ° C. or lower. Thus, a closed space can be formed by closing the steam hole formed in the tray, and a predetermined amount of water can be enclosed in the sealed space.
With such a configuration, it is possible to open the steam hole by the heat of steam during use while preventing water leakage when not in use, and measure an appropriate amount of water in advance according to the cooking object. In addition, a predetermined amount of water can be enclosed.

  In addition, the induction heating cooking container according to the present invention has a fitting portion between the stepped portion and the outer peripheral edge portion of the tray in order to prevent water leakage more reliably when a predetermined amount of water is sealed, and It is also possible to adopt a configuration in which the periphery is adhered.

  In addition, the induction heating cooking container according to the present invention is provided with a penetrating portion at substantially the center of the induction heating heating element so that the fuse function portion is easily broken from the outer edge portion toward the center portion. It can be configured.

  Moreover, the induction heating cooking container which concerns on this invention can be set as the structure which provided the convex part in the approximate center of the said container main body, in order to ensure the intensity | strength of a container main body and to support a tray.

In addition, the induction heating cooking container according to the present invention includes a plurality of holding pieces formed by radially cutting substantially the center of the induction heating heating element, and a flexible deformable tip at the substantially center of the container body. In the state where the convex portion is provided, and the convex portion is inserted through substantially the center of the induction heating heating element, the tip portion of the convex portion is bent and deformed so as to cover the side surface on the base side of the convex portion. The holding piece can be configured to be bitten and held.
With this configuration, even if the induction heating heating element is attached to the container body so that tension acts on the induction heating heating element, the holding piece formed in the center of the induction heating heating element Since a certain degree of freedom remains, even if the container is deformed by an external force or the like, it becomes possible to follow the deformation, and it is effective that the induction heating heating element is torn and damaged. It can be avoided.

In addition, the induction heating cooking container according to the present invention is configured such that the bottom surface of the container body is raised and inclined in a bottom shape, and a leg portion extending substantially orthogonal to the inclination direction of the bottom surface is provided on the grounding surface side of the bottom portion. In addition, the horizontality of the entire container can be ensured.
With such a configuration, a gap is formed between the container and the grounding surface of the electromagnetic cooker, and heat is radiated by the air flowing through the gap so that heat is not trapped between the container and the electromagnetic cooker. This effectively prevents the temperature cooker from working and shutting down the electromagnetic cooker or reducing the output. Heating can be possible.

  In addition, the induction heating cooking container according to the present invention includes one or more induction heating heating elements in order to promote convection of injected water between the front side and the back side of the induction heating heating element. It can be set as the structure which provided the 2 or more convection part.

  As described above, the induction heating cooking container of the present invention can be suitably used as a packaging container when distributing a heating target such as frozen or refrigerated food to the market, and safely and easily. It can be used as a steamer with a commercially available electromagnetic cooker. In use, the fuse function part can be broken when a predetermined time has elapsed, and cooking can be automatically terminated, and in addition, the fuse function part can be broken with priority more reliably. It is possible to manage the time until cooking is completed more accurately.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[First embodiment]
First, a first embodiment of the induction heating cooking container according to the present invention will be described.
In addition, FIG. 1 is explanatory drawing which shows the outline of 1st embodiment of the induction heating cooking container which concerns on this invention, and shows the container longitudinal cross-section in the position corresponded to the AA cross section of FIG. 2 (a) mentioned later. Show.

  In the example shown in FIG. 1, the container 1 has a bottom surface raised and inclined in a bottom shape, and a leg portion 2 c extending substantially orthogonal to the inclination direction is provided on the ground contact surface E side, whereby the horizontality of the entire container is improved. A container main body 2 that is secured; an induction heating heating element 3 that is attached to face the bottom surface of the container main body 2; a tray 4 on which a cooking object 6 is placed; and a lid body 5. It is configured.

  The container 1 is usually used by being placed on a commercially available electromagnetic cooker. However, by providing the container body 2 with the legs 2c, the container 1 is placed between the container 1 and the grounding surface E on the electromagnetic cooker. A gap 8 as shown is formed. And it is radiated by the air which circulates through this space 8, and heat can not be trapped between the container 1 and the electromagnetic cooker, whereby the temperature control mechanism works and the electromagnetic cooker stops. Or effectively lowering the output, and continuous heating at high output is possible regardless of the type of the electromagnetic cooker.

  Further, in the induction heating heating element 3 attached to the container body 2, an eddy current is induced by a high frequency magnetic field generated from an electromagnetic induction heating coil provided in an electromagnetic cooker or the like, and Joule heat is generated due to its electric resistance, thereby generating heat. Use conductive materials such as aluminum, nickel, gold, silver, copper, platinum, iron, cobalt, tin, zinc, etc., or alloys thereof, or conductive materials such as resin film or paper with conductivity. Can do. More specifically, for example, when aluminum is used as the metal material, the induction heating heating element 3 can be formed using an aluminum foil having a thickness of about 0.10 to 100 μm.

Further, in the illustrated example, the induction heating heating element 3 has a substantially circular shape, and is fixed to support portions 2 d formed to protrude from the bottom surface of the container body 2 at four locations near the outer edge portion. . In order to fix the induction heating heating element 3 to the support portion 2d, as shown in the drawing, the tip end portion of the support portion 2d is protruded from the slits 3b provided at four positions near the outer edge of the induction heating heating element 3, A fastener such as an e-ring or a ceiling may be fixed to the tip portion, but is not limited thereto. For example, in addition to folding or crushing the tip of the support portion 2d protruding from the slit 3b, a fastener such as a screw or scissors may be used, or it may be fixed by heat sealing or an adhesive. . Further, instead of the slit 3b, a cross, a star, or the like may be cut, and the contact area between the induction heating heating element 3 and the support 2d is reduced so that the heat conduction is reduced. Is preferred.
FIG. 2 is a plan view schematically showing a state in which the induction heating heating element 3 is attached to the container body 2.

If the induction heating heating element 3 is attached to the container main body 2 in this way, even if the water 7 injected into the container main body 2 boils during cooking, the induction heating heating element 3 does not shake vigorously due to the generated bubbles. Thus, the induction heating heating element 3 can be fixed while applying an appropriate tension.
Furthermore, most of the induction heating heating element 3 fixed to the support portion 2d is in a state of being lifted from the container body 2 and is not in contact with the container body 2, so that damage to the container body 2 due to heat is prevented. can do.

  Therefore, it is not necessary to consider the damage caused by the heat generated by the induction heating heating element 3 for the material forming the container body 2, and the same material as that conventionally used as a packaging container for frozen or refrigerated foods, etc. More specifically, polystyrene resins such as polystyrene, polyester resins such as polyethylene terephthalate, polyolefin resins such as polypropylene, synthetic resin materials such as polyamide resins, and various general-purpose materials such as paper and glass By forming the container body 2 from the nonmagnetic material, a low-cost induction heating cooking container that can be used in an electromagnetic cooker can be easily provided.

  When using the container 1 as described above, water 7 is poured into the container body 2 while placing the cooking object 6 on the tray 4. Then, after covering the opening of the container body 2 with the lid 5, the induction heating heating element 3 is operated in a state where the induction heating heating element 3 is immersed in water, thereby causing the induction heating heating element 3 to generate heat. Then, the water 7 in contact with the induction heating heating element 3 is heated and boiled, and the cooking object 6 can be steamed and cooked by the steam generated in the container.

Here, the water 7 to be poured into the container body 2 may contain a flavoring agent, an oil component, a seasoning liquid, and the like as necessary.
Although not particularly shown, the tray 4 can be provided with one or more steam holes so that the steam generated by boiling the water 7 can be distributed throughout the container. Can be provided with a steam vent for appropriately releasing the steam generated in the container to the outside. The tray 4 and the lid 5 can be formed using the same material as that of the container main body 2 as described above, but the lid 5 is made of a highly transparent material so that the heating object 6 can be visually observed. Preferably formed.

In this way, the container 1 can be used as a steamer by an electromagnetic cooker simply by injecting water 7 during cooking, and when steam is generated in the container, it is injected into the container body 2 along with this. Water 7 is reduced. In the present embodiment, the induction heating heating element 3 is inclined with respect to the horizontal plane, and the inclined portion whose outer edge side is positioned in the upper direction in the vertical direction is formed in the induction heating heating element 3, thereby reducing the water 7. In the process of the induction heating heating element 3 being exposed from the water surface, a fuse function portion 3a that preferentially breaks is provided in the inclined portion. And if the fuse function part 3a fractures | ruptures, a safety mechanism will work and an electromagnetic cooker will stop.
2A, the fuse function portion 3a is indicated by a chain line, and in FIG. 2B, which shows a state in which the fuse function portion 3a is broken, the broken portion where the fuse function portion 3a is broken is indicated by a symbol C. . In FIG. 2, the upper side in the vertical direction is indicated by an arrow.

  That is, in this embodiment, when attaching the induction heating heating element 3 to the container main body 2, an inclined portion with the outer edge portion on the upper side in the vertical direction is formed, and the fuse function portion 3a is formed on the inclined portion. Is provided. The fuse function part 3a provided in this way is exposed from the water surface before other parts, and at the time when a part or all of the fuse function part 3a is exposed from the water surface, most other parts are exposed. It will be immersed in water.

Therefore, as described in the section of the problem to be solved by the invention, a high-frequency magnetic field generated from a commercially available electromagnetic cooker generally has a non-uniform magnetic flux density distribution. Even if the magnetic flux density distribution is high in a portion other than the fuse function portion 3a, the heat generated in that portion is taken away by the water 7, so that breakage is avoided. On the other hand, the fuse function part 3a is exposed from the water surface, the heat flow to the water 7 is interrupted, and the fuse function part 3a is preferentially broken preferentially.
Thereby, the fuse function part 3a provided in the induction heating heating element 3 is not broken as intended, and the magnetic flux density distribution is high and induced depending on the orientation of the container 1 on the electromagnetic cooker. It is possible to effectively avoid the problem that the portion where the density of the eddy current is high breaks before the fuse function portion 3a. For this reason, according to the present embodiment, the fuse function unit 3a can function more reliably and stably, and the time management from when the induction heating heating element 3 is heated until the fuse function unit 3a breaks can be more accurately performed. Can be done.

Therefore, by providing such a fuse function unit 3a in the induction heating heating element 3, the amount of water injected into the container body 2 during cooking is arbitrarily adjusted according to the time required for cooking. When a predetermined time elapses after the heating heating element 3 generates heat, the fuse function unit 3a is broken by heat, and cooking can be automatically ended. Moreover, even if the user forgets to inject the water 7, the fuse function unit 3a is preferentially broken, so that it is possible to prevent emptying.
Furthermore, since the induction heating heating element 3 (on the outer edge side of the fuse function portion 3a) is located near the water surface, it is possible to reduce the time when steam starts to be generated, and the induction heating heating element 3 is inclined. If there is a site to do, there is also an advantage that it is easy to escape the bubbles generated when the water 7 boils.

  In the illustrated example, the induction heating heating element 3 has a substantially circular shape, and the length from the outer edge side to the center part is made equal between the fuse function part 3a and other parts. However, if the fuse function part 3a can be broken in preference to other parts, the length from the outer edge side to the center part of the fuse function part 3a is longer than the other parts. May be.

  Further, in the illustrated example, the induction heating heat generating body 3 is inclined by attaching the induction heating heat generating body 3 to the container main body 2 so that the distance from the inclined bottom surface of the container main body 1 is substantially constant. However, as long as the induction heating heating element 3 faces the bottom surface of the container body 2, the distance between the induction heating heating element 3 and the inner bottom surface of the container body 2 may not be constant. Therefore, the induction heating heating element 3 can be inclined and attached to the horizontal bottom surface.

  In addition, if the fuse function unit 3a can be broken more preferentially, it is not necessary to incline the entire induction heating heating element 3 with respect to the horizontal plane (see, for example, FIG. 11 described later). . That is, the induction heating heating element 3 is attached to the container body 2 so that at least a part of the induction heating heating element 3 is inclined with respect to the horizontal plane, and an inclined portion whose outer edge side is positioned higher in the vertical direction is formed. Therefore, if the fuse function unit 3a functions more reliably and stably, the specific mode of attaching the induction heating heating element 3 is not particularly limited.

  Further, in order to make the fuse function portion 3a easily break from the outer edge portion toward the center portion, a hole or a slit or the like penetrating the induction heating heat generating member 3 is provided at almost the center of the induction heating heat generating member 3. It is preferable to provide the through portion 3c, and in the illustrated example, a circular hole is provided. By providing the penetration part 3c, convection of the water 7 can be promoted between the front surface side and the back surface side of the induction heating heating element 3, but in addition to such a penetration part 3c or the penetration part 3c, Instead, the induction heating heating element 3 may be provided with one or more convection portions 3d penetrating the induction heating heating element 3.

Here, in order for the fuse function part 3a to function stably, it is preferable to suppress the induction heating heating element 3 from shaking vigorously due to bubbles generated when the water 7 boils. For this purpose, the convection of the water 7 is made good, and bubbles generated during boiling are released from the piercing part 3c and the convection part 3d so that the load on the induction heating heating element 3 is reduced. It is also possible to optimize the shape and arrangement of 3c and the convection part 3d.
FIG. 3 shows an example of the arrangement of the penetrating part 3c and the convection part 3d. In this example, the penetrating part 3c provided at the center of the induction heating heating element 3 has a slit shape.

  Furthermore, in the illustrated example, as described above, the induction heating heating element 3 can be attached to the container main body 2 while applying tension, but by doing so, at least the fuse function unit 3a has the structure shown in FIG. In (a), tension acts in the direction indicated by the arrow Ft. By applying such tension to the fuse function portion 3a, the fuse function portion 3a is promoted to break, and the fuse function portion 3a can be more reliably broken with priority.

  Furthermore, in the example shown in the figure, a convex portion 2b provided at substantially the center of the container main body 2 is inserted into a through-hole 3c having a circular hole so that the central portion of the tray 4 is supported. Providing such a convex portion 2 b is preferable in terms of preventing the tray 4 from drooping and ensuring the strength of the container body 2.

[Second Embodiment]
Next, a second embodiment of the induction heating cooking container according to the present invention will be described.
FIG. 4 is a plan view schematically showing a state in which the induction heating heating element 3 is attached to the container body 2 in the present embodiment, and corresponds to FIG. 2 in the first embodiment described above.

  In this embodiment, as shown in FIG. 4, for example, the length from the outer edge portion of the induction heating heating element 3 to the center portion is adjusted for each part, and the like from the outer edge side of the induction heating heating element. The length up to the central portion is relatively short in the fuse function portion 3a. In the example shown in FIG. 4, the induction heating heating element 3 has a rectangular shape, and its four corners are fixed to a support portion 2 d formed to protrude from the bottom surface of the container body 2.

  In this way, the eddy current density induced in the induction heating heating element 3 is biased, the eddy current density in the fuse function unit 3a is the highest, and the heat generation amount is increased, thereby ensuring more certainty. The fuse function part 3a can be broken with priority over others.

  Here, in FIG. 4A, a circle having a radius from the outer edge portion to the center portion of the induction heating heating element 3 in the fuse function portion 3a is indicated by a two-dot broken line. In the example shown in the drawing, the length of the induction heating heating element 3 is made different in length and width, and the length from the outer edge to the center is made shorter than other parts, but the induction heating heating element 3 An arbitrary part may be cut out, and the length from the outer edge part to the center part may be shorter than other parts.

  This embodiment is different from the first embodiment described above in the above points, and the other configurations are the same as those in the first embodiment, and thus detailed description of other configurations is omitted.

[Third embodiment]
Next, a third embodiment of the induction heating cooking container according to the present invention will be described.
In addition, FIG. 4 is explanatory drawing which shows the outline of 3rd embodiment of the induction heating cooking container which concerns on this invention, and shows the container longitudinal cross-section in the position corresponded to the BB cross section of Fig.8 (a) mentioned later. Show.

The present embodiment is different from the first and second embodiments described above in that specific means for attaching the induction heating heating element 3 to the container body 1 and a predetermined amount of water 7 preliminarily weighed are used in the container body. 2 in which the container 1 can be circulated.
Hereinafter, the specific configuration will be described focusing on differences from the first and second embodiments.

  First, in attaching the induction heating heating element 3 to the container main body 2, in this embodiment, for example, a rectangular induction heating heating element 3 as shown in FIG. 5 is used. The induction heating heating element 3 has four corners as support portions 3e, and the support portion 3e is supported by a step portion 2a formed along the inner periphery of the container body 2.

  In this embodiment, the step 2a formed on the container body 2 and the outer peripheral edge 4a of the tray 4 supported by the step 2a are fitted to each other. The fitting concave portion 2e provided in the portion 2a and the fitting convex portion 4b provided in the outer peripheral edge portion 4a of the tray 4 are fitted. When the outer peripheral edge 4a of the tray 4 is fitted to the step 2a, the support portion 3e of the induction heating heating element 3 is sandwiched between the step 2a and the outer peripheral edge 4a of the tray 4. It is like that.

In addition, a plurality of holding pieces 3g are formed at substantially the center of the induction heating heating element 3 by providing the cuts 3f radially. On the other hand, a convex portion 2b having a distal end portion that can be bent and deformed is provided substantially at the center of the container body 2.
And the convex part 2b formed in the container main body 2 is inserted in the center part in which the notch 3f of the induction heating heating element 3 is formed radially, and in that state, the base part side surface of the convex part 2b is covered. The holding piece 3g formed at the center of the induction heating element 3 is bitten and held while the tip of the convex portion 2b is bent and deformed downward (FIGS. 7B and 7C). reference).

  That is, FIG. 7 is an explanatory view showing a procedure for attaching the induction heating heating element 3 and the like to the container body. As shown in the figure, when the convex portion 2b is pushed down from above, the constriction at the center in the height direction is provided. The tip part is deformed so that the base side of the convex part 2b enters into the tip part and covers the side surface of the base part side of the convex part 2b. At this time, the induction heating heating element 3 The holding piece 3g is bitten.

  By doing so, the induction heating heating element 3 can be attached to the container body 2 while applying tension to the induction heating heating element 3 as in the first embodiment. In 8 (a), tension acts in the direction indicated by the arrow Ft. By applying such tension to the fuse function portion 3a, the fuse function portion 3a is promoted to break, and the fuse function portion 3a can be more reliably broken with priority.

  Even when the induction heating heating element 3 is attached to the container body 2 so that tension acts on the induction heating heating element 3, the induction heating heating element 3 is provided by a plurality of holding pieces 3 g formed at the center of the induction heating heating element 3. This leaves some degree of freedom. For this reason, even when the container 1 is deformed by an external force or the like, the induction heating heating element 3 can follow the deformation, and effectively avoids the induction heating heating element 3 from being broken and broken. can do.

Further, in the present embodiment, the sheet material 9 is sandwiched between the stepped portion 2a and the outer peripheral edge portion of the tray 4 so as to be positioned on the tray 4 side, overlaid on the induction heating heating element 3, A sealed space is formed.
As shown in FIG. 6, the sheet material 9 has a large number of vapor holes 9 a. These vapor holes 9 a ensure vapor tightness when not in use, but are vaporized by the heat of the vapor when used. It is closed with a closing material 9b made of a thermoplastic resin having a melting point of 100 ° C. or lower so that 9a opens. In such a sealed space, an appropriate amount of water 7 can be measured in advance according to the cooking object 6 and a predetermined amount of water 7 can be enclosed.
By doing in this way, it becomes possible to open the steam hole 9a of the sheet | seat material 9 with the heat | fever of a vapor | steam at the time of use, preventing the water leak when not in use, and an appropriate amount of water according to the cooking object 6 7 can be measured in advance, and a predetermined amount of water 7 can be enclosed.
Note that the water to be sealed may be frozen.

The sheet material 9 can be formed using the same material as that of the container body 2 as described above, but the sheet material 9 is sandwiched between the stepped portion 2 a and the outer peripheral edge portion of the tray 4. In forming the sealed space, the sheet material 9 is preferably made of a material that is more flexible than the container body 2 or the tray 4 in order to improve the sealing performance.
Further, as the thermoplastic resin having a melting point of 100 ° C. or less used as the plugging material 9b, ethylene vinyl acetate copolymer (EVA), metallocene plastomer, or the like can be used.

From the viewpoint of production efficiency, it is preferable that the water 7 is sealed only by fitting the step 2a and the outer peripheral edge 4a of the tray 4, but the outer peripheral edge of the step 2a and the tray 4 is preferable. You may adhere | attach the fitting site | part with the part 4a and / or the circumference | surroundings by heat seal, an adhesive agent, etc. In this way, when a predetermined amount of water is sealed, the water leakage can be prevented more reliably.
In addition, when using the sheet | seat material 9 in adhere | attaching the fitting site | part of the step part 2a and the outer-periphery edge part 4a of the tray 4, and / or its circumference | surroundings, at least the sheet | seat material 9 and the step part 2a and / or its circumference | surroundings And have only to be bonded.

This embodiment is different from the first and second embodiments described above in the above points, and since the other configurations are the same, detailed description of other configurations is omitted. In the invention, the individual configurations in the first and second embodiments and the present embodiment may be appropriately combined.
The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

  For example, in the first embodiment, in the example illustrated in FIG. 1, the induction heating heating element 3 is fixed to the support portion 2 d formed to protrude from the bottom surface of the container body 2, but as illustrated in FIG. 10, The induction heating heating element 3 may be fixed to a support portion 4 d suspended from the tray 4.

In the third embodiment, in the example shown in FIG. 5, the water 7 is sealed using the sheet material 9, but by closing the vapor hole formed in the tray 4 with the closing material 9 b. If the sealing performance can be sufficiently secured, the sheet material 9 can be omitted.
Furthermore, in the example shown in FIG. 5, the induction heating heating element 3 is inclined over the entire circumference, but only one fuse function part 3 a that is to be preferentially broken is inclined, and a portion that does not need to be inclined is as follows. For example, as shown in FIG. 11, the outer edge side may be pushed down by a convex portion 4 e that hangs down from the tray 4.
In the example shown in FIG. 11, the sheet material 9 is omitted in order to break the interference with the convex portion 4 e hanging from the tray 4.

  As described above, the present invention provides an induction heating cooking container that can be used as a packaging container for frozen or refrigerated foods and can be easily used as a steamer with a commercially available electromagnetic cooking device. .

It is explanatory drawing which shows 1st embodiment of the induction heating cooking container which concerns on this invention. It is a top view which shows the outline of the state which attached the induction heating heat generating body to the container main body. It is explanatory drawing which shows an example of arrangement | positioning of the penetration part and convection part which are provided in an induction heating heat generating body. It is explanatory drawing which shows 2nd embodiment of the induction heating cooking container which concerns on this invention. It is explanatory drawing which shows 3rd embodiment of the induction heating cooking container which concerns on this invention. It is explanatory drawing which shows the induction heating heating element used for 3rd embodiment of the induction heating cooking container which concerns on this invention. It is explanatory drawing which shows the sheet | seat material used for 3rd embodiment of the induction heating cooking container which concerns on this invention. In 3rd embodiment of the induction heating cooking container which concerns on this invention, it is explanatory drawing which shows the procedure which attaches an induction heating heating element, a sheet material, and a tray to a container main body. In 3rd embodiment of the induction heating cooking container which concerns on this invention, it is explanatory drawing which shows the outline of the state which attached the induction heating heat generating body to the container main body. It is explanatory drawing which shows the modification of 1st embodiment of the induction heating cooking container which concerns on this invention. It is explanatory drawing which shows the modification of 3rd embodiment of the induction heating cooking container which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 2 Container main body 2a Step part 2b Projection part 2c Leg part 2d Support part 2e Fitting recessed part 3 Induction heating heating element 3a Fuse function part 3b Slit 3c Through-hole 3d Convection part 3e Support part 3f Notch 3g Holding piece 4 Tray 4a Out Peripheral part 4b Fitting convex part 4d Support part 4e Convex part 6 Cooking object 7 Water 8 Void 9 Sheet material 9a Steam hole 9b Blocking material C Breaking part

Claims (13)

An induction heating heating element that generates heat when an eddy current is induced by a high-frequency magnetic field is mounted facing the bottom surface of the container body, and the induction heating heating element is immersed in water injected into the container body. When heated, an induction heating cooking container adapted to steam and cook a cooking object with steam generated in the container,
By inclining at least a part of the induction heating heating element with respect to a horizontal plane, and forming an inclined portion in which the outer edge side is positioned in the upper vertical direction on the induction heating heating element,
The induction heating heating element is provided with a fuse function part that preferentially breaks in the inclined part in the process in which water injected with the generation of steam decreases and the induction heating heating element is exposed from the water surface. An induction heating cooking container characterized by that.   The induction heating cooking container according to claim 1, wherein a length from the outer edge portion side to the center portion of the induction heating heating element is relatively short in the fuse function portion.   The induction heating cooking container of any one of Claims 1-2 which attached the said induction heating heating element so that tension | tensile_strength might act on the said fuse function part at least.   4. The step according to claim 3, wherein a step is formed along an inner periphery of the container body, a tray having a steam hole formed in the step is supported, and a cooking target is placed on the tray. Induction heating cooking container.   The induction heating cooking according to claim 4, wherein the outer peripheral edge of the tray is fitted to the step, and the induction heating heating element is sandwiched between the step and the outer peripheral edge of the tray. container.   A sheet material formed by closing a vapor hole with a thermoplastic resin having a melting point of 100 ° C. or less is stacked on the induction heating heating element so as to be positioned on the tray side, and the stepped portion and the outer peripheral edge portion of the tray The induction heating cooking container according to claim 5, wherein a sealed space is formed by being sandwiched between and a predetermined amount of water is sealed in the sealed space.   The induction heating according to claim 5, wherein a sealed space is formed by closing a vapor hole formed in the tray with a thermoplastic resin having a melting point of 100 ° C. or less, and a predetermined amount of water is sealed in the sealed space. Cooking container.   The induction heating cooking container of any one of Claims 6-7 which adhere | attached the fitting site | part of the said step part and the outer periphery part of the said tray, and / or its circumference | surroundings.   The induction heating cooking container of any one of Claims 1-8 which provided the penetration part in the approximate center of the said induction heating heating element.   The induction heating cooking container of any one of Claims 1-9 which provided the convex part in the approximate center of the said container main body. A plurality of holding pieces are formed by radially cutting substantially the center of the induction heating heating element, and a convex portion having a tip that can be bent and deformed is provided at the substantially center of the container body.
The holding piece while the tip of the convex portion is bent and deformed downward so as to cover the side surface on the base side of the convex portion with the convex portion being inserted through substantially the center of the induction heating heating element. The induction heating cooking container according to any one of claims 5 to 8, wherein the container is bitten and held. While raising the bottom of the container body and inclining it to the bottom,
The induction heating cooking of any one of Claims 1-11 which provided the leg part extended substantially orthogonally to the inclination direction of the said bottom face in the grounding surface side of the said bottom part, and ensured the horizontality of the whole container. container.   The induction heating cooking container of any one of Claims 1-12 which provided the 1 or 2 or more convection part in the said induction heating heating element.

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