JPH0454947Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a food container with a heating device.

(Prior Art) Lunch boxes, canned foods, etc. may taste better when warmed, and retort foods and instant foods that can be prepared by simply heating have recently become very popular.

However, since a heat source such as fire or separately prepared hot water is usually used for heating, it has been difficult to heat the above-mentioned foods in places without these facilities.

Therefore, as a food container that does not require fire,
Containers have appeared that are equipped with heating devices that do not generate fire at the bottom of the container.

In this food container with a heating device, the inside of the container is divided into a food storage portion and a heating device storage portion, and the heat of the heating device is transmitted to the food storage portion along with water vapor, so that the food is heated.

As the heating device, a heat generating material that generates heat when it comes into contact with water is used.

(Problem that the invention aims to solve) During heating, water vapor is generated by the heat generated by the heat-generating material, and the generated water vapor enters the food storage area as the food is heated, but the water vapor pressure inside the food storage area is low. When the temperature rises, it will spray out from the gap between the food container with heating device and the lid. For this reason, there is a risk of burns from the spouting water vapor, and if a large opening is provided, dust will enter the container.

(Means for Solving the Problems) The present invention has been made in view of the above-mentioned conventional problems, and its features are that the container is equipped with a heating device that generates water vapor when generating heat; This is because a whistle was installed at the outlet of the container to release water vapor.

(Function) When a heating device attached to a food container with a heating device generates heat, water vapor is generated from the heating device.
When the water vapor generated here is discharged from the outlet formed in the food container, it passes through the whistle provided there, so the momentum is reduced by the inner wall of the whistle and the steam is discharged. A whistle sounds to let you know that heating is in progress.

(Example) FIGS. 1 and 2 show a food container with a heating device according to the present invention.

The food container 1 is, for example, a bento box, and includes a container body 2, an inner container 3, a bottom container 4, a lid 5, and a heating device 6.

The container body 2 is made of polystyrene foam and has the shape of a flat square box with an open top. A raised partition portion 21 is formed at the bottom of the container body 2. A water vapor outlet 22 is formed on one side.

The inner container 3 is made of integrally molded plastic, and has a fitting part 31 formed on its outer periphery to fit into the outer periphery of the opening top of the container body 2.

The height of the inner container 3 is lower than that of the container body 2, and the interior thereof is divided into heating parts 33, 33 and a non-heating part 34 by separating walls 32. Note that locking ribs 35 are recessed in the fitting portion 31 at predetermined intervals over the entire circumference.

The bottom plates 33a, 33a of the heating units 33, 33 have slit-shaped steam discharge holes 36 for discharging heated steam, which will be described later, into the heating units 33, 33 from below.
...is formed.

The bottom container 4 is made of synthetic resin, is housed at the bottom of the container body 2, and has approximately the same height as the partition 21.

A heating device 6 is housed inside the bottom container 4 .

As shown in FIG. 2, this heating device 6 has a heating bag 61 adjacent to the upper side of a water bag 62.

The water bag 62 is a flat bag made of stretched plastic film and filled with water.

The heating bag 61 is a bag having a large number of small holes formed on its surface and filled with a heating material. The heating material generates heat when it comes into contact with water, and quicklime (calcium oxide), magnesium chloride, calcium chloride, iron oxide, etc. can be used.

One end 62a of the water bag is welded to the inner wall of the bottom container 4. The central portion of this one end portion 62 is a notch 62b, and in this embodiment, the end portion of the unsealing member 63 is heat-sealed here.

This unsealing member 63 is for unsealing the water bag 62, and is specifically a tape with strong tensile force.

The opening member 63 passes through the lower side of the water bag 62,
It comes out of the bottom container from a notch 41 formed in the bottom container 4, and is further exposed to the outside from the water vapor outlet 22 of the container body 2, as shown by the two-dot chain line in FIG.

Further, one end portion 61a of the heating device 61 is thermally welded to the upper edge of the bottom container 4.

A heat-sensitive adhesive nonwoven fabric 7 is heat-welded to the upper opening of the bottom container 4. Note that aluminum foils 8, 8 are sandwiched between the nonwoven fabric 7 and the heating bag 61 and between the opening member 63 and the bottom of the bottom container 4.

Like the inner container 3, the lid body 5 is made of integrally molded plastic, and the inner container 3 is attached to the outer periphery of the lid body 5.
A fitting part 51 is formed to coverly fit into the fitting part 31 of the inner container 3, and each separating wall 32 of the inner container 3...
It has an inner contact surface 52 that comes into contact with the top surface of...

Also, among the corresponding contact surfaces 52..., between the heating parts 33 and 33 of the inner container 3, and between the heating part 33 and the non-heating part 34,
A partitioning rib is formed in a portion corresponding to the separating walls 32, 32 between them.

As a result, when the container body 2 is closed, the abutment surfaces 52 come into contact with the top surfaces of the isolation walls 32 of the inner container 3, and the heating parts 33,
33 and the non-heating part 34 are sealed spaces completely isolated from each other.

The whistle 10 is attached to the steam outlet 22 of the container body 2, as shown by the broken line in FIG.

Therefore, as shown in FIG.
In the embodiment shown in FIG. 3, the periphery of the inlet portion 10b is a flange-shaped attachment portion 10b, which is inserted into the water vapor outlet 22.

In the figure, the blowing part 10a is inserted so that it is on the upper side, but it may be inserted so that it is placed on the lower side. The blowing part 10b is connected to the bottom container 4.
facing notch 4. The opening member 63 passes through the whistle 10 from the inlet part 10b to the outlet part 10a and is exposed to the outside.

Next, the usage condition of the food container 1 with a heating device as described above will be explained.

When the opening member 63 is pulled, the water bag 62
The plastic film forming the opening is torn straight in the stretching direction corresponding to the width of the opening member 62, allowing water to flow out.

The outflowing water permeates upward due to capillary action and comes into uniform and gradual contact with the entire quicklime inside the heating bag 61, resulting in intense heat generation accompanied by water vapor.

The steam with heat generated here flows into the heating devices 33, 33 of the inner container 3 through the steam discharge ports 36 of the inner container 3. The heating section 33,3
3. Warm up the food inside. Further, when the amount of water vapor increases beyond the volume of the inner container 3, it is discharged from the whistle 10 provided at the water vapor outlet 22 of the container body 2. At this time, water vapor flows into the inside of the whistle 10 from the inlet part 10c of the whistle 10, and is discharged from the outlet part 10a.

At this time, the water vapor within the flute 10 emits sound due to resonance at the resonant part of the flute 10. After the water vapor collides with the inner wall of the flute 10, it is discharged from the blow-off part 10a, so its force is weak.

The whistle 10 may have another structure, as shown in FIG. 4, in which the mounting portion 10b is hooked onto the upper edge of the container. In this case as well, water vapor from the water vapor outlet 22 enters the flute 10 through the inlet portion 10c, causes the resonance portion 10d to resonate, and is discharged from the outlet portion 10a while producing sound.

The whistle shown in FIG. 5 is transparent and has a flat plate shape, and is provided by adhesive or the like on the side of the container body 2 where the water vapor outlet 22 is formed.

In this embodiment, the hole for exposing the opening member 63 to the outside is the water vapor outlet 22, but the hole and the water vapor outlet 22 may be formed separately, and the opening of the water bag 62 In the case of a structure in which this is done by piercing from the outside, the water vapor discharge hole 22 is formed only for the purpose of discharging water vapor.

Further, as shown in FIG. 6, the whistle 10 is connected to the container body 2.
It may be integrally molded with.

(Effects of the invention) The present invention has a heating device in the container that generates water vapor when generating heat, and a whistle is provided at the outlet of the container for discharging the water vapor, resulting in the following effects. .

Since the water vapor discharged from the outlet collides with the inner wall of the flute and is then discharged to the outside, its force is weakened, and your hands will not feel hot even if your hands are near the outlet.

The exhaust of water vapor makes a whistling sound, so even if you are in a place where you cannot see the food container with a heating device, you can tell whether it is being heated or not.

Since the water vapor is discharged gently with the sound of a whistle, it looks good and has a high design effect.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a food container with a heating device according to the present invention, Fig. 2 is a partial longitudinal sectional view mainly showing the heating device, and Figs. 3 to 6 are whistles provided in the food container with a heating device. FIG. 1... Food container with heating device, 2... Container body,
3... Inner container, 4... Bottom container, 5... Lid body, 6...
...heating device, 10...whistle.

Claims (1)

[Claims for Utility Model Registration] A food container with a heating device, characterized in that the container is equipped with a heating device that generates steam when generating heat, and a whistle is provided at the outlet for discharging the steam from the container. .