JPH068833Y2 - Opening structure of steam heating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an unsealing structure of a steam heating device suitable for easily reheating cooked food or the like with steam.

(Prior Art) Conventionally, there has been proposed a food container that heats a food to be heated and the like by utilizing heat of hydration reaction with water. However, in order to uniformly reheat the entire food, a hydration reaction with water is proposed. It is a good idea to generate steam by heat and heat using the steam. Therefore, the applicant of the present invention separately encloses the water bag and the exothermic agent bag and stores them in an engine tray, and at least when desired. A heating device is proposed in which the water bag is opened and brought into contact with each other to generate steam by the heat of hydration reaction.

(Problems to be Solved by the Invention) However, in such a device, since it is necessary to seal water and / or a heat generating agent in the engine tray,
The tray upper opening is closed with a water impermeable sheet, but the water bag, the exothermic agent bag or the member that opens the closing sheet is taken out through the adhesive between the outer peripheral edge of the tray upper opening and the top sheet that closes the opening. Therefore, if the strength of the adhesive portion is too strong, there is a risk that the unsealing tape will break at the adhesive portion during opening. In particular, if the unsealing tape is a filamentous member and the bonding is performed in a heat-sealing manner in order to improve the breakability, the risk of breakage is very high and stable operability cannot be obtained.

Therefore, an object of the present invention is to provide an unsealing structure in which the unsealing member does not break at the bonding portion between the outer peripheral edge of the tray upper opening and the top sheet that closes the opening.

(Means for Solving the Problem) The present invention adopts a mechanized welding mode such as heat sealing for the adhesion between the outer peripheral edge of the engine tray and the top sheet, and the whole is uniformly welded, and the welding strength of only a part is It is difficult to control, but if the tape part to be sandwiched is coated with a release agent in advance, the peel strength of only that part can be easily controlled. In a steam heating device that contains water and a heat generating agent that generates heat due to a hydration reaction of the water, generates heat when contacted with heat when desired, and cuts the bag sheet that stores the water and / or heat generating agent. When a member to be opened is sandwiched and welded between a peripheral edge of an engine tray accommodating the bag and a top sheet heat-sealed to the peripheral edge to take out the terminal end, a small amount of the member is used. Both coated processing release agent pinching the welded portion, sandwiching welding strength is in the open structure of the subject matter that was formed so as to be less member breaking strength.

In the present invention, the member for cutting and opening the bag sheet containing the water and / or the exothermic agent adopted is not limited to the tape-shaped member, and a thread-shaped member can be used.

(Operation) According to the present invention, when the member to be cut and opened is sandwiched and welded between the peripheral edge of the engine tray accommodating the bag body and the top sheet heat-sealed to the peripheral edge to take out the end to the outside, Since at least the sandwich welding part of the member is coated with a release agent, even if the top seal is welded uniformly to the outer periphery of the engine tray by heat sealing, the unsealing member's sandwich welding strength is less than the member breaking strength, and it operates. Occasionally, it does not break, and the operational stability of the heating device is ensured.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The heating device 5 according to the present invention is shown in FIG. 1 and comprises a heating agent bag 7, a thread-like opening member 10 and an engine tray 6, which is housed in an engine tray 6 together with a water bag 9 and is made by an impermeable sheet 11. The heating device is hermetically sealed, and the heating device is housed in a heating container 1 for heating an object to be heated.

The heating container 1 includes a container body 2 and an inner container 3 arranged in the container body. The container body 2 is a substantially rectangular box body having an open upper surface, is made of styrofoam, and the inner container 3 is fitted into the container body 2 through an opening in the upper part. And the peripheral edge 2 of the opening
An edge portion 2b is formed at a, and the fitting portion 3b of the inner container 3 is fitted to this edge portion. Although not shown, the edge of the edge portion 2b is formed in a gentle uneven shape, and a small gap G is formed between the edge and the edge of the fitting portion 3b. However, outside air can be introduced into the container 3 through the small gap.

The inner container 3 is also substantially rectangular, has an opening on the upper surface, and is integrally formed of a plastic material. And the bottom plate 3a
While the food to be heated is stored in, the lid 4 covering the opening is fitted to the fitting portion 3b provided on the outer peripheral edge. In addition, the fitting portion 3b is provided with a locking rib 3c projecting over the entire circumference at a predetermined interval. Further, the bottom plate 3a has a wavy cross section and a large surface area, and is shaped to efficiently conduct heat. Further, through holes 3d are provided in the valleys and tops of the bottom plate 3a, respectively.
Is formed, and the high-temperature steam generated by the heat generating action of the heating device 5 is raised from the large number of through holes 3d to the inner container 2 side. The lid 4 is made of plastic and has the same outer shape as that of the inner container 3, and a fitting portion 4a is formed on the outer peripheral edge thereof. Then, the fitting portion 3b of the inner container 3
By fitting the lid body 4 to the two containers 2 and 3
Of the heating container 1 and the sealed space 1a is formed in the heating container 1.

The heating device 5 includes a heating agent bag 7 housed in an engine tray 6 and a bag breaking device 8 for the bag.
The engine tray 6 is a dish-shaped container having an upper opening and is made of a material obtained by heat-resistant laminating with a Styrofoam material. The container main body 2 is melted by the heat generated by the heating device water 9 and the heating agent bag 7. It is possible to prevent deformation and prevent downward heat diffusion. The opening surface 6a of the engine tray 6 is covered with a water-impermeable sheet 11 such as a material having excellent moisture-proof and waterproof properties, for example, vinyl chloride film, and contained water 9
Is sealed by heat sealing or the like on the outer peripheral edge 6c of the engine tray 6 so as not to leak to the outside of the engine tray 6. The exothermic agent bag 7 is filled with a predetermined amount of exothermic agent such as quick lime [calcium oxide (CaO)] which generates heat due to a hydration reaction, which is necessary for heating an object to be heated, and is made of an aluminum foil having a high sealing property. It is formed of an insertion film sheet and is placed on the bottom surface 6b of the engine tray 6 and its both ends 7
a and 7b are engine trays 6 of the water impermeable sheet 11
When the outer peripheral edge 6c is sealed by heat sealing or the like, the outer peripheral edge 6c is brought into close contact with the engine tray outer peripheral edge 6c at the same time.

As shown in FIG. 1, the bag-breaking device 8 for the heat-generating agent bag is composed of a heat-generating agent bag 7 and a thread-like unsealing member 10, and is disposed above the engine tray 6. The exothermic agent bag 7 is formed of a film that has heat-shrinkability and barrier properties (sealing property) and is easy to cut. Since both ends 7a and 7b are in close contact with the outer periphery of the engine tray, the end in the cutting direction is the end. A cut portion 7c around which the unsealing member 10 is wound around the portion 7b.
Is provided.

The filamentous unsealing member 10 is formed by looping filamentous material such as nylon or vinyl or hemp string, and has a predetermined length that can be drawn out of the heating container 1. As shown in FIG. 1, the thread-shaped unsealing member extends from one end 7a of the exothermic agent bag 7 to the lower surface 7e and the other end 7 of the exothermic agent bag 7.
It is hung around b through its cut portion 7c, and is pulled out from the outer peripheral edge 6c of the engine tray 6, and along the upper surface of the impermeable sheet 11, the filamentous opening member 10 is provided between the container body 2 and the inner container 3. It is passed through and is exposed outside the heating container. The outer peripheral edge 6c of the engine tray 6
Since the impermeable sheet 11 is heat-sealed, if the welding strength is strong, the filamentous unsealing member 10 may be cut at the welded portion at the time of unsealing, and the unsealing operation may be unsuccessful. Therefore, as shown in FIG. 2, a portion of the unsealing member 10 sandwiched between the heat-sealing welded portions of the outer peripheral edge 6c of the engine tray 6 and the water-impermeable sheet 11 is treated with a peeling substance to form the water-impermeable sheet 11 therein. The unsealing member 10 is designed so that the unsealing member 10 can be easily peeled off during the unsealing operation without impairing the hermeticity of Also, this drawer end 10b
Is preferably temporarily bonded to the outer surface of the heating container 1.

The bag-breaking device 8 and the heating device 5 of this embodiment have the above-described configurations, and are set in the heating container 1 when used. Then, foods such as yakisoba suitable for heating are stored in the heating container, and the inner container 3 is covered with the lid 4.

Next, the heat generating action of the heating device will be described.

First, when the other end 10b of the filamentous unsealing member 10 protruding from the heating container 1 is pulled in the direction of the arrow shown in FIG. 3, the sandwiching welding portion 10a of the unsealing member 10 is stronger than the welding strength of other welding portions. Since it is weak and easily peeled off, the integrated portion 6c side of the engine tray 6 receives a tensile force to open the opening surface 6a.
The central part of the edge of the water-impermeable sheet 11 that covers the base material is cracked. Subsequently, the one end portion 7b of the exothermic agent bag 7 fixed to the engine tray 6 is cracked at substantially the same portion as the impermeable sheet 11. At this time, the tensile force of the thin filamentous opening member 10 is concentrated and applied to the one end portion 7b of the exothermic agent bag 7 and cuts into the cut portion 7c, so that the crack is made in a sheared state and a strong tensile force is not required. As a result, the one end 7b is easily broken. Thereby, the exothermic agent bag is opened together with the impermeable sheet 11 in the pulling force direction from the one end 7b side to the other end 7a side (see FIG. 4). Therefore, the heating agent bag 7 is largely opened from the center. Then, the water 9 surrounding the entire circumference of the exothermic bag 7 infiltrates into the exothermic bag 7 and the water contacts almost the entire surface, and high temperature steam is generated due to the hydration reaction of the exothermic bag. At this time, the exothermic agent stored in the engine tray 6 was prevented from coming into contact with the outside air by the exothermic agent bag 7, so that abnormal heat generation due to suction of water surrounding the exothermic agent bag was prevented. Generates a proper amount necessary for heating the object to be heated. The high temperature steam causes the exothermic agent bag 7 and the water impermeable sheet 11 to shrink, and converges on the inner wall side of the engine tray 6 to open the opening surface 6a of the heating device as shown in FIG. Subsequently, the high-temperature steam diffused from this opening passes through the through hole 3d provided in the bottom plate 3a of the inner container 3 shown in FIG.
And rises to fill the closed space 1a of the heating container 1. As a result, the food to be heated is sufficiently cooked without uneven heating. In addition, since yakisoba noodles and the like are cooked at an appropriate temperature without uneven heating, it is possible to bring out an umami that cannot be obtained by cooking with hot water.

(Effects of the Invention) As is clear from the above description, according to the present invention, water and an exothermic agent that generates heat due to the hydration reaction of the water are housed and contacted when desired to generate heat to generate steam. In the steam heating device, a member for cutting and opening a bag sheet containing steam water and / or a heating agent is sandwiched and welded between a peripheral edge of an engine tray accommodating the bag body and a top sheet heat-sealed to the peripheral edge. At the time of taking out the end to the outside, at least the sandwiching welding part of the member is coated with a release agent so that the sandwiching welding strength is less than the breaking strength of the member. Even if the whole is uniformly welded by adopting a mechanized welding mode such as heat sealing, it does not break during operation, and the operation stability of the heating device is ensured.

Although the present invention has been described based on an embodiment in which a filamentous material is used as the unsealing member and the heating agent bag and the top sheet are broken, the present invention is not limited to such an embodiment. The unsealing member according to the present invention uses only the water bag in the heating device that requires only the water bag to be opened, and both in the heating device that simultaneously opens the water bag and the exothermic agent bag, and the water bag and / or both bags at the same time as the engine tray. Those requiring the opening of the top sheet can be equally applied to the opening method of the present applicant devised so that the top sheet can be opened at the same time.

[Brief description of drawings]

FIG. 1 is a sectional view showing a state before (a) and after (b) a hydration reaction of a food heating container containing a heating device having an opening structure according to the present invention, and FIG. 2 is shown in FIG. FIG. 3 is a cross-sectional view showing a state in which the unsealing member is sandwiched between the engine tray and the opening sealing sheet, and FIGS. 3 to 5 are perspective views showing an unsealing step of the heating device according to the present invention shown in FIG. 1 ... Food heating container, 5 ... Heating device 6 ... Engine tray, 7 ... Exothermic agent bag 8 ... Opening device, 9 ... Water 10 ... Opening member, 10a ... Nip welding part 11 ... Water impermeable sheet

Claims (1)

[Scope of utility model registration request] 1. A steam heating apparatus for accommodating water and a heat generating agent which generates heat due to a hydration reaction of the water, and contacting the heat at a desired time to generate heat to generate steam, wherein the water and / or the heat generating agent is used. A member for cutting and opening the bag sheet to be housed is sandwiched between the peripheral edge of the engine tray accommodating the bag body and the top sheet heat-sealed to the peripheral edge, and at the time of removing the end to the outside, at least the member is sandwiched. An unsealing structure characterized in that the welded portion is coated with a release agent so that the sandwich welding strength is equal to or lower than the breaking strength of the member.