TW201703699A - Induction heating element and induction heating vessel - Google Patents

Abstract

An induction heating element 3 of prescribed shape comprising a layered body derived from a heat seal layer 31 layered on an electrical conduction layer 30 that emits heat when overcurrent is induced therein by a high-frequency magnetic field, wherein the element is provided with a heat-seal-layer-unlayered part 31a to which the heat seal layer 31 is unlayered, and a planar fuse function part 32 is formed in a fuse function formation area 32a comprising the electrical conduction layer 30 of the heat-seal-layer-unlayered part 31a. In an induction heating vessel 1 provided with this induction heating element 3, the planar fuse function part 32 does not experience damage during cooking, or when the vessel is stacked for storage or transport, and damage to the vessel body 2 caused by heat during heating up of the induction heating element 3 while empty, etc., can be effectively avoided, enhancing the safety of the vessel.

Description

Induction heating heating element, and induction heating container

The present invention relates to an induction heating heating element that induces eddy currents by a high-frequency magnetic field emitted from an electromagnetic induction heating coil provided by an electromagnetic conditioner or the like, generates Joule heat due to electric resistance, and generates heat. Induction heating of the container.

In recent years, in place of the original heating and conditioning machine that uses gas-based machines, in general, the heating and conditioning machine called electromagnetic conditioner is not only the viewpoint of safety, cleanliness, convenience, economy, etc., but not only the catering industry, etc. The business use has become more and more popular in the general family.

However, this type of electromagnetic conditioner generates a high-frequency magnetic field by an electromagnetic induction heating coil provided inside, and heats the object to be heated by the Joule heat generated by the induced eddy current. Therefore, the heating conditioning can be performed without using a fire. Conversely, the conditioning apparatus that can be used in principle is limited, and it is necessary to use a special conditioning apparatus made of a magnetic metal such as iron or iron shovel.

In the case of the above-described state, the container for releasing the limitation of the electromagnetic conditioner is, for example, Patent Document 1, Patent Document 2, and the like. Among them, a container for an electromagnetic conditioner having a non-magnetic (or non-conductive) container body has been proposed.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2003-325327

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2014-198231

Patent Document 1 proposes a heating method using an electromagnetic conditioner that generates heat by using an eddy current generated by an electromagnetic conditioner to heat an aluminum foil of 0.10 to 100 μm, and discloses that the contents of the nonmagnetic container are heated by an electromagnetic conditioner. .

However, in the heating method as described above, there is a risk that the aluminum foil is heated to a high temperature and is easily burned and scattered, or the container is damaged by heat during rapid heating of the aluminum foil.

On the other hand, Patent Document 2 proposes an induction heating heating element which is provided with a fuse function portion which is a portion which is selectively excessively heated and is broken when it is in an air-fired state, and is broken by the portion. The safety mechanism of the conditioner functions and the electromagnetic conditioner stops and ends the heating.

However, in Patent Document 2, the portion where the fuse function portion is broken is formed on the upper edge side of the portion where the conductive material is bent and stood up, and when it is conditioned, When the container is stacked and transported in an overlapping manner, there is a risk of damage to the standing portion.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an induction heating heat generating body and an induction heating container including the induction heating heat generating body, which is used as a non-magnetic (or non-conductive) container body mounting induction. When the heating element is heated and the object to be heated is heated by an electromagnetic conditioner or the like, the fuse function portion is not damaged when the container is placed or transported, and the fuse function portion is not damaged, thereby effectively avoiding air burning or the like. The damage of the container body due to heat during heating of the heating element improves the safety of the container.

In the induction heating heat generation system of the present invention, the induction heating element is formed by a conductive layer that generates heat by eddy current induced by a high-frequency magnetic field, and an induction heating element of a predetermined shape formed by laminating a heat seal layer. The heat seal layer is formed as a non-laminated heat seal layer non-laminated portion, and a planar fuse function portion is formed in a fuse function portion forming region formed by the conductive layer of the heat seal layer non-laminated portion.

Further, the induction heating container of the present invention has a configuration in which the induction heating heat generating body is attached to a container body made of a non-conductive material.

According to the induction heating heat generating body of the present invention, the fuse function portion is prevented from being damaged when the container is placed during conditioning or when the container is stacked and transported. Knot In the case where the function of the fuse function portion in the air-burning state is lowered, the safety mechanism provided in the electromagnetic conditioner is abnormally sensed, and the electromagnetic conditioner is automatically stopped, thereby preventing the heating of the heating element due to air-burning or the like. The damage of the container body caused by the heat of the time.

Further, the induction heating container of the present invention can be formed into an induction heating container having improved safety by providing the induction heating element.

1‧‧‧Induction heating vessel

2‧‧‧ container body

3‧‧‧Induction heating heating element

4‧‧‧Tray

21‧‧‧ inside bottom

22a‧‧‧First Support Department

22b‧‧‧Second Support

22c‧‧ Third Support Department

23‧‧‧ Section

30‧‧‧ Conductive layer

31‧‧‧Heat seal

31a‧‧‧Heat seal layer non-layered part

32‧‧‧Flat fuse function

32a‧‧‧Fuse function forming area

33a~f‧‧‧ cut line

34a~c‧‧‧ cut line

35a~e‧‧‧ slit

36a~c‧‧‧ cutting line

37a~c‧‧‧punching

38, 38a~c‧‧‧ slit

39a, 39b, 39c‧‧‧ slit

CF‧‧‧Central Region

HF‧‧‧Main heating zone

HF1~3‧‧‧heating area

OF‧‧‧The Peripheral Area

Fig. 1 is a plan view showing the outline of an induction heating container according to a first embodiment of the present invention.

Fig. 2 is a schematic side view showing the induction heating container according to the first embodiment of the present invention.

Fig. 3 is a schematic bottom plan view showing the induction heating container according to the first embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view showing a cross section taken along line A-A of Fig. 1;

Fig. 5 is a perspective view showing the outline of the induction heating heat generating body according to the first embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view showing a cross section taken along line B-B of Fig. 1;

Fig. 7 is a schematic cross-sectional view showing a C-C cross section of Fig. 1;

Fig. 8 is a perspective view showing a schematic view of a modification of the induction heating heat generating body according to the first embodiment of the present invention.

Fig. 9 is a schematic cross-sectional view showing a D-D cross section of Fig. 8.

Fig. 10 is a perspective view showing an outline of another modification of the induction heating heat generating body according to the first embodiment of the present invention.

Fig. 11 is a schematic cross-sectional view showing a cross section taken along line E-E of Fig. 10;

Fig. 12 is an explanatory view showing a state in which the induction heating container according to the first embodiment of the present invention is stacked.

Fig. 13 is a plan view showing the outline of an induction heating container according to a second embodiment of the present invention.

Fig. 14 is a schematic cross-sectional view showing a cross section taken along the line F-F of Fig. 13;

Fig. 15 is a plan view showing the outline of an induction heating container according to a third embodiment of the present invention.

Fig. 16 is a plan side perspective view showing the induction heating heat generating body according to the third embodiment of the present invention.

Fig. 17 is a perspective view showing a bottom surface side of the induction heating heat generating body according to the third embodiment of the present invention.

Fig. 18 is a schematic cross-sectional view showing a H-H cross section of Fig. 15;

Fig. 19 is a schematic cross-sectional view showing the I-I cross section of Fig. 15;

Fig. 20 is an explanatory view showing a modification of the slit in the third embodiment of the present invention.

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

[First Embodiment]

First, a first embodiment of the present invention will be described.

The induction heating container 1 of the present embodiment includes a container body 2 made of a non-conductive material, and an induction heating heat generating body 3 that is attached to the container body 2 to perform induction heating by an electromagnetic conditioner. The container body 2 has a side wall that is erected so as to surround the periphery of the inner bottom surface 21, and is configured to accommodate a liquid heated object such as water, and the induction heating heat generating body 3 is attached to the container body 2 as described above. The bottom surface 21 side.

The induction heating vessel 1 is typically placed on top of a commercially available electromagnetic conditioner. Therefore, the size of the inner bottom surface 21 of the container main body 2 or the induction heating heat generating body 3 attached to the inner bottom surface 21 side of the container main body 2 is not particularly limited, and can be electromagnetically heated according to the electromagnetic conditioner used. The size of the coil is set. For example, a general electromagnetic induction heating coil provided in a commercially available electromagnetic conditioner for home use has an inner diameter of about 5 cm and an outer diameter of about 20 cm. If it is used for business, it is larger than this, but it can be used in accordance with the imaginary electromagnetic The conditioner is used to properly determine the size.

The shape of the inner bottom surface 21 of the container body 2 is also not limited to a square shape as shown. For example, in addition to being formed into a rectangular shape or a circular shape, it may be formed into a polygonal shape such as a triangle, a pentagon or a hexagon. The overall shape of the container body 2 can also be formed into various shapes in consideration of ease of use and the like.

The induction heating heat generating body 3 attached to the container main body 2 is induced to vortex by a high-frequency magnetic field emitted from an electromagnetic induction heating coil provided by an electromagnetic conditioner or the like, and Joule heat is generated by the electric resistance thereof to generate heat. a conductive layer 30 made of a conductive material, laminated to the container body 2 The laminate having the heat-sealable heat seal layer 31 is formed into a predetermined shape in a flat shape (see FIGS. 5, 8, and 10).

For the conductive material forming the conductive layer 30, for example, a metal such as aluminum, nickel, gold, silver, copper, platinum, iron, cobalt, tin, zinc, or the like, or the like can be used, by using a high-frequency magnetic field. It is formed by various conductive materials that are heated by induction heating. More specifically, for example, if aluminum is used as the conductive material, the conductive layer 30 can be formed using an aluminum foil having a thickness of preferably about 0.10 to 100 μm, more preferably about 1 to 40 μm. When the conductive layer 30 is formed using a metal foil such as aluminum foil, when the induction heating heat generating body 3 is attached to the container body 2, it can be easily attached through the heat seal layer 31, and can be adapted to the shape of the container body 2.

The heat seal layer 31 is not particularly limited as long as it has heat sealability to the container body 2, and can be appropriately selected depending on the non-conductive material forming the container body 2. It is preferable to use a resin which is easy to be formed, has good heat sealability, and has moderate heat resistance, and is preferably a resin of the same type as the container body 2 to be described later. The conductive layer 30 and the heat seal layer 31 can be laminated by a known lamination technique, either directly or through a suitable adhesive. By forming the induction heating heating element 3 as a laminated body, it is possible to apply a conventionally known multilayer film or a multilayer sheet manufacturing technique, and thus it is easy to manufacture.

For the non-conductive material forming the container body 2, a polystyrene resin such as polystyrene, a polyester resin such as polyethylene terephthalate, a polyolefin resin such as polypropylene, or a polyfluorene can be suitably used. A synthetic resin material such as an amine resin. The container body 2 may also be a single layer or a plurality of layers in which the resins are combined with each other or with other functional resins. Non-conductive material In addition, paper, glass, etc. may be used, but it is preferable to laminate or apply the above-mentioned synthetic resin on the inner surface in consideration of heat sealability with the heat seal layer 31 of the induction heating heat generating body 3. By forming the container body 2 from these materials, it is possible to inexpensively provide the induction heating container 1 which can perform heating conditioning using an electromagnetic conditioner.

In the present embodiment, the induction heating heat generating body 3 is formed in a substantially circular shape, and the heat seal layer non-laminated portion 31a is provided to extend in the radial direction, and will be described later. The shape of the induction heating heating element 3 is preferably circular in view of the induced eddy current characteristics, but may be square or rectangular depending on the shape of the container body 2, and the "diameter direction" means The center side of the figures faces the direction of the outer peripheral side.

Further, as shown in FIG. 1, FIG. 5, and FIG. 6, the induction heating heating element 3 is divided into: a center by cutting lines 33a and 33b which cut the conductive layer 30 in a circumferential direction in a concentric manner. The region CF, the main heating region HF, and the peripheral portion region OF. Then, the main heating region HF located between the cutting lines 33a and 33b is cut lines 33c, 33d, and 33e which cut the conductive layer 30 in the circumferential direction in a concentric manner with the cutting lines 33a and 33b. The plurality of heating regions HF1, HF2, and HF3 are divided in the radial direction, and the region between the cutting lines 33c and 33d is divided into a plurality of regions in the circumferential direction by the cutting line 34b extending in the radial direction.

In addition, the center line region CF located on the inner side of the cutting line 33a is divided into a plurality of regions in the circumferential direction by a cutting line 34a extending in the radial direction. Further, the peripheral edge region OF located on the outer side with respect to the cutting line 33b is divided into a plurality of regions in the circumferential direction by the cutting line 34c extending in the radial direction.

When the conductive layer 30 is cut, the conductive layer 30 may be selectively cut by cutting off the conductive layer 30 side by a blade or by using a YAG laser or a semiconductor laser. In a range in which the induction heating heating element 3 is processed as a whole, the cutting of the heat-sealing layer 31 may be performed, but the heat sealing layer 31 may be cut to the unsealed state. Since the induction heating heating element 3 can be processed as a single unit, the processing at the time of manufacture is extremely easy.

The conductive layer 30 of the induction heating heat generating body 3 is cut to form the cutting lines 33a, 33b, 33c, 33d, 33e, 34a, 34b, 34c, whereby the eddy current induced in the conductive layer 30 does not flow to the crossing. The directions of the lines 33a, 33b, 33c, 33d, 33e, 34a, 34b, 34c are cut. Therefore, eddy currents are induced in accordance with each of the respective regions which are partitioned by the cutting lines 33a, 33b, 33c, 33d, 33e, 34a, 34b, 34c.

The eddy current induced by the induction heating heat generating body 3 placed on the electromagnetic induction heating coil is induced in accordance with the shape of the electromagnetic induction heating coil. Usually, the eddy current induced in the central portion region CF is not so strong, but the current density distribution is slightly unstable and disturbs the eddy current flowing further outside. Therefore, the central portion region CF and the main heating region HF are partitioned by the cutting line 33a, whereby the influence on the main heating region HF can be reduced.

The position of the cutting lines 33a and 33b that divide the main heating region HF is formed so that the current density distribution of the induced eddy current can be stabilized, and the region where the conductive layer 30 can efficiently heat can be divided into the main heating region HF. According to the size or shape of the induction heating element 3, etc. whole.

Further, the current density distribution of the induced eddy current is generally not uniform along the radial direction of the electromagnetic induction heating coil, and is located at a position slightly near the outer periphery in the center in the radial direction, and has a peak of current density at which position The tendency of the heating to be strongly heated. In consideration of the current density distribution of the eddy current as described above, in the present embodiment, the main heating region HF is divided into the plurality of heating regions HF1, HF2, HF3 in the radial direction.

The position at which the main heating zone HF is divided into the cutting lines 33c, 33d, and 33e of the plurality of heating zones HF1, HF2, and HF3 in the radial direction can be controlled to control the induced eddy current to achieve equalization of the heating of the object to be heated. The way to adjust properly. For example, the cutting lines 33c, 33d, and 33e that divide the main heating region HF into the plurality of regions are preferably arranged in the radial direction so as to be densely disposed near the outer periphery so that the eddy current is not concentrated in the vicinity of the outer periphery.

As described above, in the present embodiment, the main heating region HF is partitioned by the cutting lines 33a and 33b which cut the conductive layer 30 in the circumferential direction, and the conductive layer 30 is cut by the circumferential direction. The cutting lines 33c, 33d, and 33e divide the main heating region HF into the plurality of heating regions HF1, HF2, and HF3, thereby controlling the eddy current induced in the main heating region HF, and the main heating region HF is uniformly heated as much as possible.

By suppressing the heating unevenness of the object to be heated as described above, the liquid material to be heated such as water is not locally heated, and the occurrence of the sudden boiling can be suppressed. Further, the end edges of the cutting lines 33a, 33b, 33c, 33d, and 33e in the main heating region HF (heating regions HF1, HF2, HF3) are heated in a liquid state such as water. The starting point when the object boils and bubbles appear. Therefore, at the time of heating, even if a small bubble is continuously generated as in the case where zeolite is placed, a large number of bubbles are prevented from occurring, and the occurrence of a sudden boiling is suppressed.

Thereby, it is possible to prevent the user from scalding or smearing the periphery of the electromagnetic conditioner due to the object to be heated which is scattered by the boiling.

Further, as described above, the central portion region CF is divided into a plurality of regions in the circumferential direction by the cutting line 34a, and the peripheral portion region OF is also divided into a plurality of regions in the circumferential direction by the cutting line 34c. As described above, the central portion region CF and the peripheral portion region OF are divided into a plurality of smaller regions, whereby the strong eddy current around the center of the electromagnetic induction heating coil provided in the electromagnetic conditioner is not induced in the respective regions. The central portion region CF and the peripheral portion region OF do not become so high. Therefore, when the heat-sealing layer 31 in the central portion region CF and the peripheral portion region OF is heat-sealed, and the induction heating heat generating body 3 is attached to the container body 2, heat transfer to the container body 2 can be suppressed, and the container can be prevented. The body 2 is damaged.

Further, even in a region formed between the cutting lines 33c and 33d of the main heating region HF, the cutting line 34b is divided into a plurality of regions in the circumferential direction, thereby suppressing heat generation in the region, in which the region is heated. The heat seal layer 31 is heat sealed with the container body 2.

As described above, not only the central portion region CF and the peripheral portion region OF of the induction heating heat generating body 3 but also the region between the cutting lines 33c and 33d of the main heating region HF are suppressed from being heated, even in the region. The heat seal layer 31 can effectively suppress convection or flow of the object to be heated, or repel the coil of the electromagnetic induction heating coil by heat sealing with the container body 2. The induction heating of the heating element 3 by the force is raised or wavy, and more stable heating can be performed.

Further, in the present embodiment, since the induction heating heat generating body 3 is formed in a substantially circular shape, the heat seal layer 31 is removed in a predetermined width along the radial direction passing through the center of the induction heating heat generating body 3, and is provided with main heating. A strip-shaped heat seal layer non-laminated portion 31a (conductive layer 30) in which the regions HF (heating regions HF1, HF2, HF3) intersect and extend in the radial direction. Next, a region where the main heating region HF intersects with the heat seal layer non-laminated portion 31a is a fuse function portion forming region 32a formed of the conductive layer 30, and in the region 32a, when heated and conditioned, when liquid is When the heating material is boiled to evaporate and is reduced, or when the object to be heated is not contained in the container, when the object is in an air-burning state in which heat is not transferred to the object to be heated, a plane that is selectively excessively heated and broken is formed. Fuse function unit 32.

The planar fuse function unit 32 exhibits the above-described function as a shape of a three-dimensional process in which the conductive material of the conductive layer 30 is not bent, and the current density of the eddy current is biased, and the current density is the highest. When a part is formed, a specific form is not limited. For example, as shown in Fig. 1, Fig. 5, and Fig. 7, the heating regions HF1, HF2 which are partitioned by the cutting lines 33a and 33c of the main heating region HF, the cutting lines 33d and 33e, and the cutting lines 33e and 33b are shown. The region where the HF3 intersects with the heat seal layer non-laminated portion 31a serves as the fuse function portion forming region 32a, and a part of the remaining conductive layer 30 is formed along the extending direction of the heat seal layer non-laminated portion 31a. Slots 35a, 35b, 35c, 35d, 35e, whereby the portion remaining in the conductive layer 30 can be used as a planar fuse The function unit 32 functions.

As described above, the current density of the eddy current induced in the heating regions HF1, HF2, HF3 is biased, and the current density remaining in the portion of the conductive layer 30 becomes the highest. As a result, when it is in an air-burning state in which heat transfer to the object to be heated is not performed, the planar fuse function portion 32 that is partially broken by the excessive heat generation of the conductive layer 30 functions as a function.

When the planar fuse function portion 32 is broken, the conduction of the eddy current is blocked, and the safety device of the electromagnetic conditioner senses the abnormality, whereby the electromagnetic conditioner stops and the heating ends, thereby preventing the container body due to air burning. 2 damage. Further, since the heating time can be controlled depending on the amount of the object to be heated, the planar fuse function unit 32 can be applied to the induction heating container 1 when it is used as a container for use in cooking or the like. Cooking timer.

Further, the heat-sealing layer non-layered portion 31a is provided in the induction heating heat generating body 3, and the planar fuse function portion 32 is formed in the heat seal layer non-laminated portion 31a, whereby the planar fuse function portion 32 is not broken. The heat and heat seal layer 31 is damaged.

The planar fuse function portion 32 as described above may be cross-linked to the heat seal layer non-laminated portion 31a in the main heating region HF (heating region HF), HF2, HF3) as shown in the modification of Figs. 8 and 9 . The fuse function portion forming region 32a is formed by engraving the dicing lines 36a, 36b, and 36c on the conductive layer 30 along the extending direction of the heat seal layer non-laminated portion 31a. At this time, the portion which is thinned by the cutting lines 36a, 36b, and 36c is formed. The current density in the bit is the highest, and when it is in an air-burning state in which the heat of the object to be heated is not performed, the planar fuse function unit 32 that is partially broken by the selective heat generation functions.

Further, the planar fuse function unit 32 may have a fuse that intersects the heat seal layer non-laminated portion 31a in the main heating region HF (heating regions HF1, HF2, HF3) as shown in FIG. 10 and FIG. The functional portion forming region 32a is formed by piercing a circular punching hole 37a, 37b, 37c of a part of the residual conductive layer 30 along the extending direction of the heat sealing layer non-laminated portion 31a. At this time, the punching holes 37a, 37b, and 37c are bored, and the current density of the conductive layer 30 remaining in the radial direction is the highest, and when it is in an air-burning state in which heat transfer to the object to be heated is not performed, The planar fuse function unit 32 that selectively breaks excessively generates heat and functions.

The size and number of the punching holes 37a, 37b, and 37c of a part of the residual conductive layer 30 are appropriately selected depending on the range of the main heating region HF, and the shape thereof may be an appropriate shape such as an oblong shape or an ellipse in addition to the circular shape.

As described above, the planar fuse function portion 32 is formed so as not to bend the conductive layer 30, and it is possible to stand up and transport the container as shown in FIG. Formed locally.

Here, in the above-described example, the heating regions HF1, HF2, HF3 which are partitioned by the cutting lines 33a and 33c, the cutting lines 33d and 33e, and the cutting lines 33e and 33b of the main heating region HF are used. A region intersecting the heat seal layer non-laminated portion 31a is defined as a fuse function portion forming region. 32a, the fuse function unit 32 is formed separately, but is not limited thereto. When the main heating region HF is divided into a plurality of regions, a region where at least one region of the partitioned main heating region HF intersects with the heat seal layer non-laminated portion 31a is defined as a fuse function portion forming region 32a, and a planar fuse is formed. The function unit 32 is sufficient.

Further, in the above-described example, the induction heating heat generating body 3 is formed in a circular shape, and the heat seal layer non-laminated portion 31a is provided along the radial direction through the center of the induction heating heat generating body 3, but the heat seal layer non-laminated portion 31a It is not limited to this if it is provided in a strip shape to cross the main heating region HF.

When the induction heating heat generating body 3 as described above is attached to the container body 2, it is preferable that the induction heating heat generating body 3 is attached by being separated from the inner bottom surface 21 of the container body 2.

The induction heating element 3 is separated from the inner bottom surface 21 of the container body 2, and the liquid heated object such as water contained in the container body 2 is also spread over the inner surface of the induction heating element 3 and the container body 2. Between 21 . Thereby, the heating efficiency of the object to be heated is improved, and the container body 2 can be effectively prevented from being damaged by the heat from the induction heating element 3. In addition, in order to prevent the container body 2 from being damaged, the ventilating hole or the slit 38 may be formed through the induction heating heat generating body 3 so that the object to be heated does not stagnate on the back side of the induction heating heat generating body 3 to promote convection.

In the present embodiment, as shown in FIG. 4, the first support portion 22a projecting in the vicinity of the center of the inner bottom surface 21 of the container body 2, the second support portion 22b projecting from the outer peripheral side thereof, and the other protruding portions are provided. The induction heating element 3 is heated at the third support portion 22c on the outer peripheral side thereof. The sealing is performed by separating the induction heating heat generating body 3 from the inner bottom surface 21 of the container body 2. The heat seal portions of the support portions 22a, 22b, and 22c and the induction heating heat generating body 3 are indicated by oblique lines in FIG.

Further, when the induction heating heat generating body 3 is separated from the inner bottom surface 21 of the container body 2, the height of the support portions 22a, 22b, and 22c is preferably based on the first support portion 22a and the second support portion 22b. The order of the third support portion 22c is gradually decreased toward the outer peripheral side, and the height of the induction heating heat generating body 3 attached to the container main body 2 is inclined toward the inner bottom surface 21 so as to be higher toward the center side and lower toward the peripheral edge. . In the form as described above, when the object to be heated is water or the like, if the water in the container is less than a predetermined amount, the object to be heated flows from the center of the induction heating element 3 to the periphery thereof, and is heated by induction heating. The unsealed portion of the peripheral portion region OF of the heating element 3 and the container body 2 is retained in the gap between the inner bottom surface of the container body 2 and the heat seal layer 31 of the induction heating heat generating body 3. As described above, by retaining the object to be heated, the object to be heated can be prevented from being damaged by the overheating of the induction heating element 3 due to the decrease in the object to be heated.

Further, in the present embodiment, as shown in FIG. 4, for example, a segment portion 23 may be provided on the periphery of the opening of the container body 2 to support or fit the tray 4 on which the food material is placed.

[Second embodiment]

Next, a second embodiment of the present invention will be described.

In the foregoing first embodiment, the conductive layer 30 is formed by the circumference The plurality of cutting lines 33a and 33b in the direction are divided into a central portion region CF, a main heating region HF, and a peripheral portion region OF, and the heat seal layer non-laminated portion 31a and the main heating region HF are intersected and extended in a strip shape. The intersecting region is formed as the fuse function portion forming region 32a.

In the present embodiment, in the case where the conductive layer 30 is not partitioned into the regions, the fuse function portion forming region formed by the conductive layer 30 of the heat seal layer non-laminated portion 31a which is formed by the heat seal layer 31 is not laminated. The planar fuse function portion 32 is formed in 32a, which is different from the first embodiment.

Specifically, as shown in FIGS. 13 and 14, in the present embodiment, a circular heat seal layer non-laminated portion 31a which is inscribed in the periphery of the induction heating heat generating body 3 is provided. Next, the fuse function portion forming region 32a formed by the conductive layer 30 of the heat seal layer non-layered portion 31a is formed with a conductive layer 30 left to form a circular discharge hole 38. As described above, by forming the discharge holes 38 in the conductive layer 30 of the fuse function portion forming region 32a, the current density of the eddy current induced in the induction heating heat generating body 3 is biased, and remains on the periphery and the discharge hole of the induction heating heat generating body 3. The current density of the conductive layer 30 between 38 becomes the highest. As a result, when it is in an air-burning state in which heat transfer to the object to be heated is not performed, the portion functions as a planar fuse function portion 32 that is selectively broken by excessive heat generation.

As described above, the planar fuse function portion 32 of the present embodiment is formed by folding and holding the conductive layer 30 as in the first embodiment, and is stored or transported in a container as shown in FIG. At this time, there is no case where the planar fuse function portion 32 is damaged.

In the present embodiment, the other configurations are the same as those of the first embodiment, and the description thereof will be omitted.

[Third embodiment]

Next, a third embodiment of the present invention will be described.

Fig. 15 is a plan view showing the induction heating container of the embodiment, and the side view is the same as the side view (Fig. 2) of the first embodiment, and the bottom view shows the bottom view of the first embodiment ( Figure 3) is the same. In addition, the cross-sectional view showing the G-G cross section of Fig. 15 is shown to be the same as the cross-sectional view (Fig. 4) showing the A-A cross section of Fig. 1.

In the present embodiment, as in the first embodiment, the conductive layer 30 is divided into a central portion region CF, a main heating region HF, and a peripheral portion by a plurality of cutting lines 33a and 33b along the circumferential direction. In the region OF, the heat seal layer non-laminated portion 31a intersects with the main heating region HF and extends in a strip shape, and the intersecting region is the fuse function portion forming region 32a, but is formed in a planar shape of the fuse function portion forming region 32a. The form of the fuse function unit 32 is different from that of the first embodiment.

That is, in the present embodiment, as shown in Figs. 15 and 16, the main heating region HF is partitioned by the cutting lines 33a and 33c, the cutting lines 33d and 33e, and the cutting lines 33e and 33b. A region where the heating regions HF1, HF2, and HF3 intersect the heat seal layer non-laminated portion 31a is a fuse function portion forming region 32a, and the conductive layer 30 is cut across the heat seal layer non-laminated portion 31a, and the region is cut. One of the cutting lines 33a, 33d, and 33e on the inner peripheral side of the heating regions HF1, HF2, and HF3 Arc-shaped slits 39a, 39b, and 39c which are in contact with each other on the heat seal layer 31 are formed. Next, the width between the other cut lines 33c, 33e, 33b on the outer peripheral side of the division heating regions HF1, HF2, HF3 and the slits 39a, 39b, 39c is narrowed, which is relative to the slit 39a 39b and 39c are the opposite sides of the cutting lines 33a, 33d, and 33e that are in contact with both ends of the slits 39a, 39b, and 39c, and function as the planar fuse function unit 32.

By the above, the current density of the eddy current induced in the heating regions HF1, HF2, HF3 is biased, and the planar fuse function is formed between the cutting lines 33c, 33e, 33b and the slits 39a, 39b, 39c, respectively. The current density in the portion 32 is the highest. As a result, when the air-burning state in which the heat of the object to be heated is not performed is performed, the planar fuse function portion 32 selectively excessively generates heat and is broken.

Further, even in the planar fuse function portion 32, since the conductive layer 30 is not required to be bent and raised to form a flat shape, the planar fuse is prevented when the container is superposed or transported as shown in FIG. The functional portion 32 is damaged.

The slits 39a, 39b, and 39c are particularly preferably formed in an arc shape in order to prevent the eddy current from being disturbed, but the slits 39a, 39b, and 39c are not limited thereto. The slits 39a, 39b, and 39c can be formed as a portion that functions as a planar fuse function unit 32 so as to be narrowed and widened between the other cutting lines 33c, 33e, and 33b on the outer peripheral side. Preferably, it is formed so as to protrude in a direction in which one of the cutting lines 33a, 33d, and 33e on the inner peripheral side of the slits 39a, 39b, and 39c is separated from each other.

Further, as shown in FIG. 20(a), the slits 39a, 39b, and 39c may be formed by cutting the conductive layer 30 across the heat seal layer non-laminated portion 31a, and on the outer peripheral side of the zone heating regions HF1, HF2, and HF3. One of the cutting lines 33c, 33e, and 33b is formed as an arc-shaped slit 39a, 39b, 39c that is in contact with both ends of the heat seal layer 31 so that the zone heating regions HF1, HF2, and HF3 are located. The width between the other cutting lines 33a, 33d, and 33e on the circumferential side and the slits 39a, 39b, and 39c is narrowed, and this portion is formed into a planar fuse function portion 32.

Here, Fig. 20 is a modification in which the portion surrounded by the chain line in Fig. 15 is enlarged to show the slit 39a.

Further, as shown in FIG. 20(b), the slits 39a, 39b, and 39c may be formed by cutting the conductive layer 30 across the heat seal layer non-laminated portion 31a, and the zone heating regions HF1, HF2, and HF3 are located. Both of the cutting lines 33a, 33d, and 33e on the circumferential side and the other cutting lines 33c, 33e, and 33b located on the outer peripheral side are formed in an arc shape in which the both ends are in contact with each other on the heat seal layer 31. The slits 39a, 39b, and 39c form the narrow portion between the slits 39a, 39b, and 39c as the planar fuse function portion 32.

In other words, the planar fuse function portion 32 is formed by cutting the conductive layer 30 across the heat seal layer non-laminated portion 31a, and forms at least one of the cut lines on the inner peripheral side or the outer peripheral side of the partition heating regions HF1, HF2, HF3. The slits 39a, 39b, and 39c that are in contact with each other may be formed in a planar shape between the cutting lines 33a, 33d, and 33e on the inner circumference side and the cutting lines 33c, 33e, and 33b on the outer circumference side.

Among them, a general electromagnetic induction heating coil provided in a commercially available home electromagnetic conditioner has an inner diameter of about 5 cm and an outer diameter of about 20 cm, and the heating coil has a small diameter. If the above is the case, the eddy current flows to the outer peripheral side. Between the cutting lines 33c, 33e, and 33b and the slits 39a, 39b, and 39c, the fuse function portion 32 is more safely operated to prevent damage to the container body 2.

Further, in the present embodiment, both ends of the slits 39a, 39b, and 39c are formed on the heat seal layer 31 and the cut lines 33a, 33d, and 33e on the inner peripheral side across the heat seal layer non-laminated portion 31a. The connection is formed, whereby there is no case where the conductive layer 30 is cut and peeled off. On the other hand, the both ends of the slits 39a, 39b, and 39c are not cut across the heat seal layer non-laminated portion 31a, and the cut lines 33a and 33d on the inner peripheral side in the heat seal layer non-laminated portion 31a. When the 33e is formed in a contact manner, the conductive layer 30 is cut and peeled off by the slits 39a, 39b, and 39c. When the induction heating heating element 3 is manufactured, the peeling sheet which is cut and peeled off by the conductive layer 30 must be treated as cutting chips, and the processing thereof is laborious. However, in the present embodiment, it is not necessary to perform the above-described labor. The induction heating heating element 3 is manufactured.

However, at the time of manufacture, if the treatment of the cutting chips is not particularly problematic, the slits 39a, 39b, and 39c may be heat-sealed as described above, without crossing the heat-sealing layer non-laminated portion 31a. The inside of the layer non-laminated portion 31a is formed so as to be in contact with the cutting lines 33a, 33d, and 33e on the inner circumference side, and the fuse function portion 32 is formed between the cutting lines 33c, 33e, and 33b on the outer peripheral side of the other side. It is not limited to the above.

In addition, if the main heating zone HF is divided into a plurality of regions, at least one region of the zoned main heating zone HF and the heat seal layer are not The area in which the laminated portion 31a intersects is the fuse function portion forming region 32a, and the planar fuse function portion 32 may be formed. This is the same as the first embodiment, but the size or shape of the heating element 3 may be heated in accordance with the induction heating. The main heating zone HF zone is divided into a heating zone.

In other words, the cutting lines 33c, 33d, and 33e that divide the main heating region HF into the plurality of heating regions HF1, HF2, and HF3 may be omitted. In the case of the above-described case, at least one of the cutting line 33a on the inner peripheral side of the main heating region HF or the cutting line 33b on the outer peripheral side forms a slit so that both ends thereof meet each other. The planar fuse function portion 32 may be formed between the cutting line 33a on the circumference side and the cutting line 33b on the outer circumference side.

Further, in the present embodiment, the cutting line 33a of the division central portion region CF and the main heating region HF is located on the outer peripheral side as compared with the first embodiment, and the central portion region CF is heated by the center of the heating element 3 by induction heating. The plurality of cutting lines 34a that cut the conductive layer 30 radially toward the outer peripheral side are divided into a plurality of regions in the circumferential direction, and are cut along the circumferential direction in a concentric manner with the cutting line 33a. The cutting line 33f of the layer 30 is also divided into a plurality of areas in the radial direction.

In the illustrated example, the central portion region CF is divided into eight regions in the circumferential direction by the radial cutting line 34a, and is divided into two regions in the radial direction by the cutting line 33f. The central portion region CF is divided into sixteen segments to suppress heat generation, but is not limited thereto. When the heat generation of the central portion region CF can be suppressed, the number of the radial cut lines 34a that divide the central portion region CF into the plurality of regions in the circumferential direction may be increased or decreased according to the size or shape of the induction heating element 3, or may be omitted. Or increase or decrease by zoning the center The cutting line 33f of the portion region CF.

The present embodiment is different from the first embodiment in the above description, but the other configuration is the same as that of the first embodiment, and the description thereof is omitted.

The present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to the embodiments described above, and various modifications may be made without departing from the scope of the invention.

The documents described in this specification and the contents of the Japanese application specification which is the basis of Paris priority in this case are used here.

[Industrial availability]

As indicated by the above description, the present invention provides an induction heating vessel which can heat the object to be heated safely and simply by means of a commercially available electromagnetic conditioner.

1‧‧‧Induction heating vessel

2‧‧‧ container body

3‧‧‧Induction heating heating element

21‧‧‧ inside bottom

31a‧‧‧Heat seal layer non-layered part

32‧‧‧Flat fuse function

32a‧‧‧Fuse function forming area

33a~e‧‧‧ cut line

34a~c‧‧‧ cut line

35a~e‧‧‧ slit

38‧‧‧ slitting

Claims (14)

An induction heating heat generating body which is an induction heating heat generating body formed by a laminated body of a heat sealing layer formed by a conductive layer which generates heat by induced eddy current by a high-frequency magnetic field, and is characterized in that the heat seal layer is formed In the non-laminated heat seal layer non-laminated portion, a planar fuse function portion is formed in a fuse function portion forming region formed by the conductive layer of the heat seal layer non-laminated portion. The induction heating heating element according to claim 1, wherein the conductive layer is divided into a central portion, a plurality of heating regions, and a periphery by a cutting line that cuts the conductive layer in a circumferential direction. In the portion region, the heat seal layer non-laminated portion intersects the heating region and extends in a strip shape, and a region in which at least one of the heating regions intersects with the heat seal layer non-laminated portion is formed as the fuse function. The part forms an area. The induction heating heating element according to the second aspect of the invention, wherein the conductive layer in the fuse function portion forming region is formed to have a portion extending in a direction along a direction in which the heat sealing layer is not laminated, and the conductive layer is cut. The formed slit is formed in the portion of the conductive layer as the planar fuse function portion. The induction heating heating element according to the second aspect of the invention, wherein the conductive layer in the fuse function portion forming region is cut along a direction in which the heat sealing layer non-layered portion extends, and the conductive layer is The portion where the thickness is thin is formed as the planar fuse function portion. The induction heating heating element according to the second aspect of the invention, wherein the conductive layer in the fuse function portion forming region is perforated with a part of the conductive layer along the extending direction of the non-laminated portion of the heat sealing layer, and remains. The portion of the conductive layer is formed as the planar fuse function portion. The induction heating heating element according to the second aspect of the invention, wherein at least one of the inner peripheral side or the outer peripheral side of the heating region is cut by cutting at least the conductive layer of the fuse function portion forming region The line forms a slit in which both ends are in contact with each other, and a portion opposite to the cutting line side that is in contact with both ends of the slit is formed as a planar fuse function portion. The induction heating heating element according to the sixth aspect of the invention, wherein the cutting line on the inner peripheral side of the heating region is formed with a slit in which both ends are in contact with each other. The induction heating heating element according to claim 6 or 7, wherein the slit is cut across the non-laminated portion of the heat seal layer to cut the conductive layer, and both ends of the slit are on the heat seal layer The cutting lines are connected to each other. The induction heating heat generating body according to claim 6 or 7, wherein the slit is protruded in a direction separated by the cutting line in which both ends of the slit are in contact with each other. The induction heating heating element according to claim 9, wherein the slit is formed in an arc shape. Induction of any of items 1 to 7 of the patent application scope The heating element is heated, wherein the heating region is divided into a plurality of regions by a plurality of cutting lines that cut the conductive layer in a circumferential direction, and the cutting portion is densely disposed near the outer periphery to divide the heating region into a plurality of regions. line. The induction heating heating element according to any one of the first to seventh aspects, wherein the central portion is radially cut by the conductive layer from the center side toward the outer peripheral side. Cut the line and divide it into multiple areas. The induction heating heating element according to any one of the items 1 to 7, wherein the central portion is divided into one or a plurality of cutting lines that cut the conductive layer in a circumferential direction. Multiple areas. An induction heating container characterized in that the induction heating heat generating body according to any one of claims 1 to 7 is attached to a container body made of a non-conductive material.