JP2010183933A - Electromagnetic induction heating type food heating/thermally insulating container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic induction heating type food heating/thermally insulating container which can heat/thermally insulate only a food product stored in any selected container, can fully execute heat sterilization of the food product, and can be repeatedly used many times. <P>SOLUTION: The electromagnetic induction heating type food heating/thermally insulating container includes: an outer container which is manufactured by a nonconductive material and is provided with a plurality of storage chambers in which each chamber space is separated in an adiabatic state; a plurality of inner containers mounted by being dropped into opening space parts of selected storage chambers in the outer container; and an electromagnetic induction heating body arranged on a bottom part of the selected storage chambers in the outer container. When a prescribed amount of water is poured into the storage chamber in which the electromagnetic induction heating body is arranged in the outer container and the electromagnetic induction heating body is inductively heated by an electromagnetic cooker, only the food product stored in the inner container heated by the electromagnetic induction heating body can be selectively heated/thermally insulated out of all inner containers mounted in the outer container 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is an improvement of a food heat insulation container, more specifically, only a part of the food contained in the selected container can be heated and insulated, and the food can be sufficiently heat sterilized. The present invention relates to an electromagnetic induction heating type food heating and holding container that can be used over and over without worrying about burns during heating operations.

  As is well known, a microwave oven is often used to heat a lunch box or the like, but since the microwave oven employs the principle of rapidly heating the moisture in the food by microwaves, the food is kept at a predetermined temperature. It is not suitable for applications such as heating to a constant temperature or keeping at a constant temperature.

  In addition, it is considered that a hot water heating method is suitable for heating and keeping the food as described above. However, when performing a hot water bath using a normal combustion type gas stove, heat resistance is applied to the outer container that is directly heated. Since it is necessary to use a container made of metal or ceramic (ceramics, etc.) with excellent properties, it is difficult to apply it to heat insulation of a lunch box made of plastic or wooden containers.

  Recently, electromagnetic cookers (IH cookers) that have better thermal efficiency than gas stoves, are easy to clean, and are friendly to the environment are also becoming popular. As a technology using such an electromagnetic cooker, non-conductive <Patent Document 1> discloses a heating method in which an electromagnetic induction heating element is disposed in an outer container, and the heating element is heated in water with an electromagnetic cooker to make a hot water bath of food.

  And if such a heating method is used, since it can be used even in containers made of plastic, etc., a lunch box container in which the inner container and the outer container have a double structure is prepared, and the side dish etc. put in the container Can be heated with an electromagnetic cooker, but if you only store food in an inner container with a partition, etc., all the food stored during heating will be warmed. Desserts could not be accommodated and lacked practicality.

  On the other hand, in the prior art, a technique for heating and keeping only a part of food by arranging a heat storage body at the bottom of the lunch box as described in <Patent Document 2> has been proposed. In addition to the risk of burns in the operation of inserting the food into the lunch box, heating from the bottom alone inevitably causes uneven heating, and the food cannot be sufficiently sterilized by heating.

  In addition, the heat storage used as a heating source has a limited number of uses and must be replaced regularly, which makes the cost burden large and uneconomical at cooking sites such as hospital meals and school lunches that handle large amounts of lunch boxes. It was easy.

JP 2001-176650 A (page 2-4, FIG. 1-2) JP 2008-18027 A (page 2-6, FIG. 1)

  The present invention has been made in view of the problems as described above, and the object of the present invention is to heat and keep only foods contained in arbitrarily selected containers and to sufficiently sterilize foods. An object of the present invention is to provide an electromagnetic induction heating type food heating and insulating container that can be used, has no danger of burns during heating, and can be used over and over again and is excellent in economy.

  Means employed by the present inventor for solving the above-described problems will be described with reference to the accompanying drawings.

That is, the present invention is made of the non-conductive material, and the outer container 1 having a plurality of storage chambers 11, 11. A plurality of inner containers 2, 2... That are prepared and can store food F therein, and are dropped into the open space of the selected storage chamber 11 in the outer container 1; An electromagnetic induction heating element 3 arranged at the bottom of the selected storage chamber 11 in the outer container 1,
When a predetermined amount of water W is injected into the storage chamber 11 where the electromagnetic induction heating element 3 in the outer container 1 is disposed, and the electromagnetic induction heating element 3 is induction-heated by the electromagnetic cooker E, the generated electromagnetic induction heating element. The inner container 2 ′ in which the hot water or steam heated by 3 is heated indirectly, and the electromagnetic induction heating element 3 in all the inner containers 2, 2. Only the food contained in the heated inner container 2 ′ can be selectively heated and kept warm.

  Further, the present invention can employ a technical means that a plurality of storage chambers 11 are formed by attaching a partition plate 13 to the outer container 1 so as to be detachable.

  Further, the present invention can employ a technical means including a plurality of electromagnetic induction heating elements 3, 3... Having different shapes corresponding to the shape of the storage chamber 11 formed by the partition plate 13 of the outer container 1.

  Further, according to the present invention, vent holes 31 are formed in the electromagnetic induction heating element 3 so that air bubbles generated from the water near the lower surface of the generated electromagnetic induction heating element 3 are directed upward from the vent holes 31. It is possible to adopt a technical means for escaping and preventing the electromagnetic induction heating element 3 from floating and rattling.

  In the present invention, a plurality of electromagnetic induction heating elements 3, 3... Are arranged in the accommodating chambers 11, 11... Of the outer container 1, and the electromagnetic induction heating elements 3. It is possible to adopt a technical means of heating by an electromagnetic cooker E with a built-in or a plurality of electromagnetic cookers EE ....

  The present invention also provides a technical means for arranging the cold storage material 4 in the storage chamber 11 where the electromagnetic induction heating element 3 in the outer container 1 is not arranged so that the inner container 2 containing the non-heated food Q can be kept cold. Can be adopted.

  In the present invention, the inner container is attached to the open portion of the accommodation chamber formed in the outer container, and the accommodation chamber into which the inner container containing the heated food is inserted among the plurality of accommodation chambers of the outer container is electromagnetically installed in advance. By placing the induction heating element and injecting water, if the electromagnetic induction heating element is heated in water by placing the outer container on an electromagnetic cooker before eating, the heat heated by the generated electromagnetic induction heating element It becomes possible to indirectly warm the inner container containing the heated food with water or steam.

  And this makes it possible to easily heat only heated food while containing heated food such as boiled food and fried food and non-heated food such as cold vegetables and dessert in the same lunch container. In a warm state, non-heated food can be eaten deliciously in a cold state.

  In addition, even after the induction heating of the electromagnetic induction heating element by the electromagnetic cooker is stopped, the temperature of the heated food can be maintained for a certain period of time by the heat radiation of steam and hot water. Even if it is free, it can keep warm.

  In addition, according to the hot water heating method described above, since the food can be heated to nearly 100 ° C. from the entire inner peripheral surface of the inner container, heat sterilization is sufficiently performed through the heat firmly to the inside of the food. Is also possible.

  Also, if the electromagnetic induction heating element and water are placed in the storage chamber of the outer container, it is only necessary to place the outer container on the electromagnetic cooker and operate the cooker during heating. Safe without accompanying.

  On the other hand, the electromagnetic induction heating element is not limited in the number of times of use, and can be used repeatedly as many times as necessary, so that the product of the present invention is used in a cooking place such as hospital food or school lunch that handles a large amount of lunch. But there will be no economic problems.

  Therefore, according to the present invention, not only can the food contained in the container be selectively heated and kept warm, but also has excellent practicality that can be improved in terms of safety and economy in use and food hygiene. Since the food container can be provided, the practical utility value of the present invention is very high.

It is a whole perspective view showing the food heating insulation container in Example 1 of the present invention. It is a whole sectional view showing the food heating insulation container in Example 1 of the present invention. It is a disassembled perspective view showing the food heating insulation container in Example 1 of this invention. It is a state explanatory drawing showing the mounting state of the inner container in Example 1 of the present invention. It is a state explanatory drawing showing the heating state of the food heating insulation container in Example 1 of the present invention. It is state explanatory drawing showing the heat retention state of the food heating heat retention container in Example 1 of this invention. It is whole sectional drawing showing the other usage example of the food heating insulation container in Example 1 of this invention. It is a whole top view showing the food heating insulation container in Example 2 of this invention. It is a whole top view showing the internal structure of the food heating insulation container in Example 2 of this invention. It is a whole top view showing the other usage example of the food heating insulation container in Example 2 of this invention. It is a whole perspective view showing the electromagnetic induction heating body in the modification of this invention. It is a state explanatory drawing showing the heating state of the food heating insulation container in the modification of the present invention. It is whole sectional drawing showing the food heating insulation container in the modification of this invention.

Example 1
A first embodiment of the present invention will be described below with reference to FIGS. Incidentally, in the same figure, what is indicated by reference numeral 1 is an outer container, and what is indicated by reference numeral 2 is an inner container. Moreover, what is indicated by reference numeral 3 is an electromagnetic induction heating element, and what is indicated by reference numeral 4 is a cold storage material.

  Next, the configuration of the first embodiment will be described below. First, in Example 1, the outer container 1 having a plurality of storage chambers 11 and 11 in which the indoor spaces are separated from each other by heat insulation is produced using wood, which is a non-conductive material (FIG. 1, FIG. 1). (See FIG. 2).

  In Example 1, in order to form a plurality of storage chambers 11, 11... In the outer container 1, a partition plate 13 made of wood board material having an appropriate thickness is provided on the inner wall of the outer container 1. The accommodating chambers 11 and 11 are created by being detachably mounted in the guide groove 12 (see FIG. 3).

  Moreover, after putting the partition plate 13 in the outer container 1, the upper plate 14 having a plurality of window holes 14a, 14a,... I am letting.

  And in the open part of each storage chamber 11 and 11 of the outer container 1 formed in this way, it is made from a synthetic resin material (in this example, “polypropylene (PP)”) which is a non-conductive material, A plurality of inner containers 2, 2... In which the heated food P or the non-heated food Q is accommodated are dropped and fitted on the tapered peripheral surface 21 (see FIG. 4).

  In addition, when producing the inner container 2 or the outer container 1 from a synthetic resin material, it is necessary to select a material having a heat resistant temperature higher than 100 ° C. If possible, a material having a heat resistant temperature of 140 ° C. or higher should be selected. desirable.

  Further, when the inner container 2 is fitted, when the film lid 22 for sealing the food is heat-sealed in the inner container 2 ′ containing the heated food P, the burst due to thermal expansion is prevented. Therefore, the film lid 22 is peeled off and the seal is opened.

  In addition, an electromagnetic induction heating element 3 made of an iron material having conductivity and a relatively large electric resistance is provided in the storage chamber 11 of the outer container 1 in which the inner container 2 ′ in which the heated food P is stored is mounted. Arranged in advance, and a predetermined amount of water is poured into the storage chamber 11.

  Thereby, if the electromagnetic induction heating element 3 is induction-heated in water by applying the outer container 1 to the electromagnetic cooker E before eating, the water W heated by the electromagnetic induction heating element 3 becomes hot hot water or steam. Since the inner container 2 ′ containing the heated food P is indirectly heated, only the heated food P can be heated (see FIG. 5).

  During the heating, air bubbles generated from the water in the vicinity of the lower surface of the electromagnetic induction heating element 3 can be released upward by the vent holes 31, 31... Of the electromagnetic induction heating element 3. The heating element 3 is not lifted or rattled.

  Further, after the induction heating of the electromagnetic induction heating element 3 by the electromagnetic cooker E is stopped, as shown in FIGS. 6 (a) and 6 (b), if the lid 16 is attached to the upper part of the outer container 1, The heated food P that has been warmed can be kept warm for a certain period of time by the heat radiation of water vapor and hot water.

  In addition, the heated food P can be subjected to a heat treatment near 100 ° C. from the inner peripheral surface of the inner container 2 ′ heated with hot water or water vapor, so that the heat is firmly passed to the inside of the food. Sufficient heat sterilization can also be performed.

  On the other hand, since it is only necessary to place the outer container 1 on the electromagnetic cooker E and operate the cooker during the heating, there is no danger of burns and the electromagnetic induction heating element 3 has no limit on the number of uses. Can be used over and over again.

  On the other hand, with respect to the storage chamber 11 of the outer container 1, the number and form of the storage chambers 11 can be changed by increasing the number of partition plates 13 and attaching them to other guide grooves 12 as shown in FIG. 7. Therefore, a plurality of electromagnetic induction heating elements 3, 3... Having different shapes corresponding to the shape of the storage chamber 11 are prepared.

  Moreover, as shown in the figure, if the cold storage material 4 is disposed in the storage chamber 11 in which the electromagnetic induction heating element 3 for inserting the inner container 2 in which the unheated food Q is stored in the outer container 1 is disposed, the unheated food Q Can be kept cold.

  Incidentally, it is actually confirmed that even if a plurality of electromagnetic induction heating elements 3 and 3 are arranged for an electromagnetic cooker E having only one excitation coil C, the electromagnetic induction heating element 3 does not generate heat appropriately. Therefore, when using a general electromagnetic cooker E with one built-in exciting coil C, it is necessary to reduce the number of electromagnetic induction heating elements 3 to be used to one.

“Example 2”
A second embodiment of the present invention will be described below with reference to FIGS. In Example 2, the open portion of the storage chamber 11 is provided using the upper plate 14 in which a total of nine (3 × 3 in the vertical and horizontal) window holes 14a, 14a. reference).

  In the outer container 1, L-shaped partition plates 13, 13... Are inserted into the four corners along the guide grooves 14, 14. The electromagnetic induction heating element 3 is arranged (see FIG. 9).

  As a result, the inner container 2 ′ containing the heated food P can be attached to the center of the nine open portions of the outer container 1, its upper, lower, left, and right sides, and the non-heated food is opened in the four corner open portions. The inner container 2 in which Q is accommodated can be attached.

  Further, with respect to the outer container 1 of the second embodiment, the inner container 2 ′ is formed in a T shape as shown in FIG. 10A by changing the shape and arrangement of the partition plate 13 and the electromagnetic induction heating element 3 to be used. Heated food P contained in the inner container 2 ′ by arranging it, or by arranging it in an H shape as shown in FIG. 10 (b) or an O shape as shown in FIG. 10 (c). It is also possible to heat and heat only.

  The present invention is generally configured as described above. However, the present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims. For example, As the material of the outer container 1 and the inner container 2, not only a wood material and a synthetic resin material but also a ceramic material which is a non-conductive material can be used.

  Further, regarding the electromagnetic induction heating element 3, the same effect can be obtained even if it is a stainless material or the like as long as it is a material having electrical conductivity and a relatively large electric resistance. As for the air vent hole 31 provided in Fig. 10 (a), it is formed into a slit shape as shown in Fig. 10 (a), or as shown in Fig. 10 (b), notches 32, 32 ... are provided instead of the air vent hole 31. As shown in FIG. 10C, the same effect can be obtained even when the electromagnetic induction heating element 3 is formed in a conical cylinder shape and the vent hole 31 is provided at the apex portion.

  Further, when a foam metal material having continuous pores as shown in FIG. 10 (d) is used as the electromagnetic induction heating element 3, not only the electromagnetic induction heating element 3 is rattling but also a problem of bumping phenomenon. It can be solved at the same time.

  On the other hand, when using an electromagnetic cooker E incorporating a plurality of exciting coils C · C as shown in FIG. 12 (a) or a plurality of electromagnetic cookers E · E as shown in FIG. 12 (b). When using ..., it is also possible to arrange a plurality of electromagnetic induction heating elements 3 and 3 in the storage chambers 11 and 11 of the outer container 1.

  Further, regarding the structure in which a plurality of storage chambers 11 and 11 are formed in the outer container 1, it is not always necessary to use the partition plate 13. As shown in FIG. 13, the outer container 1 is provided with a plurality of recesses to store the recesses. It may be used as chambers 11 and 11.

  As shown in the figure, if the cap lid 23 is used for the inner container 2, the heated food P can be kept warm even if the outer container 1 does not have the lid body 16. Belongs to the technical scope of

  In recent years, an increasing number of double-income families who cannot secure time to prepare meals has increased the number of consumers who have already eaten cooked lunches and prepared dishes and eat them at home. There is a demand for a method that can easily and easily warm a bento or the like by a method other than a microwave oven that is easily dropped. In addition, school lunches and hospital food cooking sites require cost reductions through rationalization, while the kitchens require a lot of labor costs. The situation is impossible.

  Under such circumstances, the electromagnetic induction heating type food heating and holding container of the present invention can not only easily heat and heat the heated food in the lunch box to an appropriate temperature in general households, but also heat sterilization and the like. Because of its excellent hygiene effect, it is easy to use cooked foods manufactured in factories for school lunches and hospital lunches, thereby reducing labor costs and improving food quality. Because it is a useful technology that can be used, the demand in the market is great and its industrial utility value is very high.

1 Outer container
11 containment room
12 Guide groove
13 Partition
14 Upper plate
14a Window hole
15 Step edge
16 Lid 2 Inner container
21 Taper circumference
22 Film lid
23 Cap lid 3 Electromagnetic induction heating element
31 Vent hole
32 Notch 4 Cold storage material P Heated food Q Non-heated food W Water E Electromagnetic cooker C Exciting coil

Claims (6)

The outer container 1 having a plurality of storage chambers 11, 11... Made of a non-conductive material and each indoor space being insulated from each other; A plurality of inner containers 2... That can accommodate F and drop into the open space of the selected storage chamber 11 in the outer container 1; and selection in the outer container 1 An electromagnetic induction heating element 3 disposed at the bottom of the storage chamber 11 to be stored,
When a predetermined amount of water W is injected into the storage chamber 11 where the electromagnetic induction heating element 3 in the outer container 1 is disposed, and the electromagnetic induction heating element 3 is induction-heated by the electromagnetic cooker E, the generated electromagnetic induction heating element. The inner container 2 ′ in which the hot water or steam heated by 3 is heated indirectly, and the electromagnetic induction heating element 3 in all the inner containers 2, 2. An electromagnetic induction heating type food heating and insulating container characterized in that only the food contained in the heated inner container 2 'can be selectively heated and insulated.   2. The electromagnetic induction heating type food heating and insulating container according to claim 1, wherein a plurality of storage chambers 11, 11... Can be formed by attaching a partition plate 13 detachable to the outer container 1.   3. The electromagnetic induction heating according to claim 2, comprising a plurality of electromagnetic induction heating elements 3, 3... Having different shapes corresponding to the shape of the storage chamber 11 formed by the partition plate 13 of the outer container 1. Food heating and insulation container.   The electromagnetic induction heating element 3 is provided with vent holes 31, 31, and air bubbles generated from the water near the lower surface of the generated electromagnetic induction heating element 3 escape upward from the vent holes 31, 31. The electromagnetic induction heating type food heating and holding container according to any one of claims 1 to 3, wherein the body 3 can be prevented from being lifted or rattling.   A plurality of electromagnetic induction heating elements 3, 3... Are arranged in the storage chambers 11, 11... Of the outer container 1, and the electromagnetic induction heating elements 3. The electromagnetic induction heating type food heating and holding container according to any one of claims 1 to 4, wherein the heating is possible with a cooking device E or a plurality of electromagnetic cooking devices EE.   The cold storage material 4 is arrange | positioned in the storage chamber 11 which does not arrange | position the electromagnetic induction heat generating body 3 in the outer container 1, The inner container 2 in which the unheated food Q was accommodated can be cold-retained. The electromagnetic induction heating type food heating and insulating container according to any one of the above.