JPH0464255B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a heat generating device that can easily heat and cook food and drinks by utilizing the heat generating effect caused by the hydration reaction between water and a heat generating material.

(Prior art) As a food container for conveniently heating and cooking instant foods such as pre-cooked take-out lunches and katsupu noodles,
Recently, devices equipped with a heating device have become well known. This heating device places a predetermined amount of water and a heating element that generates heat through a hydration reaction at the bottom of a food container. As an example, one proposed for use in cup food containers. (Refer to Japanese Unexamined Patent Publication No. 16371/1983). This device is equipped with a water bag and a heating element that generates heat when water is added to a compartment formed between an outer container and an inner container that house the noodles. A plurality of through holes are formed in the outer container, and a thin string for opening the water bag is pulled out from one of the through holes. In addition, when using this cup food container, by pulling the thin string,
The water that leaks from the water bag is glued to the heating element. This causes an exothermic effect due to the hydration reaction, and the cup noodles are heated and cooked.

However, this type of food container has a plurality of through holes in the outer container, which communicates the inside and outside of the container, so it is susceptible to the influence of outside air and has the disadvantage that moisture can enter the container. As a result, the heating element of the heating device absorbs moisture and gradually causes a hydration reaction, producing a slight exothermic effect. Therefore, the thermal efficiency of the heating device decreases, and during actual use, the amount of heat required to heat the object to be heated cannot be obtained, and the food and drinks are not heated to the appropriate amount, resulting in loss of flavor and making them unsuitable for consumption. It was hot.

Therefore, the heating element and water bag are stored in a heating container,
It has been considered and proposed to wrap the heat-generating container in an impermeable outer bag to prevent contact with the outside air. And usually such a heating device is
It is placed at the bottom of the food and is provided in a food container.

(Problems to be Solved by the Invention) However, although this type of heating device can prevent a decrease in heat generation efficiency, it has the disadvantage that it is troublesome to handle during use. In other words, when the food is stored in a food container as described above, the heating device must be taken out together with the food, the outer bag of the heating device must be torn, and then the food must be put back into the container. This is because when the heating element causes a hydration reaction, the heating device is guided to the food side. Also, if the food container is covered with a storage bag,
There was a problem in that the work of opening the bag increased and handling became more cumbersome.

This invention was made in view of the above-mentioned problems, and prevents the heat-generating material from absorbing moisture to obtain the desired heat-generating effect when the heat-generating device is used, and also makes it easier to open the outer bag and water bag. It is an object of the present invention to provide a heat generating device that is easier to handle.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a heat-generating material that generates heat through a hydration reaction, a water bag disposed on the lower surface of the heat-generating material, and a water bag and a heat-generating material. and an outer bag that houses the heat generating case, the front end of the water bag is fixed to the front end of the heat generating case, and a first string member having one end fixed to the heat generating case is The outer bag is placed along the bottom surface of the bag from the rear end to the front end of the water bag, passing from the bottom surface to the top surface of the water bag, and further along the top surface of the water bag from the front end to the rear end. A second string-like member, which is pulled out to the outside and has one end fixed to the heat-generating case, is arranged along the inner surface of the outer bag from the rear end of the heat-generating case to the front end. Take it out from the inside of the bag to the outside and place it to the rear end of the outer bag,
In addition, an opening start end piece for opening the outer bag in the front and back direction with a required left and right width is formed at the front end of the outer bag; A second string-like member is wrapped around the piece.

(Function) In this invention, since the heat generating case containing the heat generating material and the water bag is housed in the outer bag, the water absorbing heat generating material is isolated from the outside air. For this reason,
Since the heat-generating material is maintained in a state where it does not absorb moisture or the like, the desired amount of heat can be obtained through a hydration reaction when the heat-generating device is used.

The first string member has one end fixed to the heat generating case, and the first string member is arranged from the rear end to the front end along the lower surface of the water bag, and the first string member is arranged from the rear end to the front end along the lower surface of the water bag. The bag is passed through the bag, and then placed along the top surface of the bag to the rear end, and pulled out to the outside of the outer bag. On the other hand, the second string-like member is arranged along the inner surface of the outer bag from the rear end to the front end of the heat generating case, and is wrapped around the opening end piece formed at the front end of the outer bag. It is arranged up to. Therefore, when the heat generating device is used, when the first string-like member and the second string-like member are pulled, the water bag bursts in the front-rear direction, so that the water that flows out can be evenly brought into contact with the heat-generating material. On the other hand, since the outer bag is opened from the front end side to the rear end side with the left and right width, the heated steam generated by the hydration reaction of the heat generating material is released from the large opening of the outer bag. Therefore, if an object to be heated is placed near the heat generating device, the entire object will be heated evenly.

(Example) An example in which the heat generating device according to the present invention is applied to a food container will be described below based on the drawings. The heat generating device 1 is shown in FIGS. 1 to 5, and has a heat generating case 2 containing a water bag 3 and a heat generating material bag 4 housed in an outer bag 5, and a first string member 6 and a first string member 6. It has two string-like members 7 and is arranged at the bottom of a food container 8 provided with a food case 9.

As shown in FIGS. 1 and 4, the heat generating case 2 is a dish-shaped container with an upward opening made of a heat insulating material, and a plurality of protrusions are provided at required locations on the bottom 2a to form legs 2b. And water bag 3 on the bottom 2c
A heat source consisting of a heat generating material bag 4 and a heat generating material bag 4 is housed, and direct contact between this heat generating source and a food container 8, which will be described later, is prevented to prevent melting or deformation of the food container 8 due to heat generation.

The water bag 3 is made of polyethylene, as shown in FIGS. 3 and 4, and is filled in advance with an amount of water necessary to cause a hydration reaction to heat the object to be heated. The front end 3a of the water bag 3 is fixed to the inner wall of the front end 2d of the heat generating case 2, and is provided with a first string member 6.

This first string member 6 is used to unseal the water bag 3, and is made of hemp string, nylon fiber, etc., and one end 6a is firmly attached to the bottom 2a of the rear end 2e of the heat generating case 2 using an adhesive sheet 10. is fixed to. The water bag 3 is disposed from the rear end 3b of the water bag 3 along its lower surface 3c to the front end 3a via a notch 2f formed at the edge of the rear end 2e of the heat generating case 2. Moreover, in this front end, a small hole bored in the center is inserted from the lower surface 3c of the water bag 3 to the upper surface 3d. Further, along the upper surface 3d of the water bag 3, the front end 3
a to the rear end 3b, and the other end 6b is pulled out from an outer bag 5, which will be described later. The heat-generating material bag 4 is made of a highly water-absorbing nonwoven fabric, and is filled with quicklime (CaO), which generates heat through a hydration reaction, in a predetermined amount necessary for heating, which is the same as the amount of water described above. The heat generating material bag 4 is placed on the upper surface 3d of the water bag 3, and is housed in the outer bag 5 together with the heat generating case 2.

As shown in FIGS. 1, 2, and 4, the outer bag 5 is made of polyethylene and has water impermeability, is weakened in the front and back direction, and has an opening end piece 1 at the front end 5a.
1, and is provided with a second string-like member 7. This opening start end piece 11 is for opening the center of the outer bag 5 largely, and is formed by providing a U-shaped cut line 11a toward the front end 5a. Note that this cut line 11a has a sealing member 12, for example, slightly larger than the opening start end piece 11,
An adhesive tape 12 known as Danpron Ace, which is easy to peel off, is temporarily sealed. This temporary sealing is
This is for sealing the cut line 11a portion, and is made by pasting a sealing member 12 from the outer surface 5d of the outer bag 5. The heat generating case 2 is housed in the outer bag 5 constructed in this way, and the front and rear ends 5a, 5
b is heat sealed and sealed. This heat sealing is performed with adhesive force such that the first string member 6 can slide on the rear end portion 5b. The second string member 7 is for opening the outer bag 5, and is made of the same material as the first string member 6, and is attached to the bottom 2a of the heat generating case 2 together with the first string member 6. One end 7a is fixed,
It is arranged from the rear end 2e to the front end 2d of the heat generating case 2 along the inner surface 5c of the outer bag 5 via the notch 2f of the heat generating case 2. Further, at this front end 2d, the center of the opening start end piece 11 provided on the outer bag 5 is inserted from the inner surface 5c of the outer bag 5 to the outer surface 5d. Note that at this time, the second string member 7 is made of an adhesive tape 13 made of the same material as the sealing member 12.
It is temporarily adhered to the inner surface of the opening start end piece 11 by the following steps, thereby making it easy to pull the opening start end piece 11. The second string-like member 7 is attached to the outer surface 5 of the outer bag 5.
d from the front end 5a to the rear end 5b,
The other end 7b is pulled out together with the first string-like member 6 to the outside of a food container 8, which will be described later. A notch 8c is provided at the center of the upper end on the rear end side of the food container 8, and the first string member 6 and the second string member 7 are passed through the cutout 8c. Reference numeral 16 denotes a grip portion that bundles both string-like opening members 6 and 7 and facilitates a pulling operation. As shown in FIGS. 1 and 2, the food container 8 is a rectangular box with an upward opening, made of plastic or the like, and has an opening 8a covered with a lid 14. In other words, there is an edge 8 around the periphery of the opening.
b is formed, and a fitting part 14a provided on the lid 14 is fitted to this edge 8b to close the food container 8.
Then, close the lid 14.

The food case 9 is also made of plastic, and the food to be heated, such as steamed buns or rice bowls, is placed in the food container 8. This food case 9 has an edge 9b around the opening 9a, and this edge 9
b is engaged with the edge 8b of the food container 8 to hold the food case 9. The bottom plate 9c of the food case 9 has a wavy cross section to increase its surface area and to effectively conduct heat.
The bottom plate 9c also has slit-like pores 15.
A plurality of pores 15 are provided, and heated steam can be discharged into the food case 9 from below through the pores 15.

When using the food container 8 configured in this manner, an object to be heated such as a rice bowl is placed therein and the lid 14 is placed on the container. Next, the first string member 6 and the second string member 7 are pulled to heat the object to be heated. At this time, since the heat generating case 2 is covered with the outer bag 5, the heat generating material bag 4 does not absorb moisture contained in the air such as dew condensation adhering to the inside of the food container 8. Waterproofness is maintained.

Next, the heat generating action of the heat generating device and heating cooking will be explained. First, the first string member 6 and the second string member 7 facing the outside of the food container 8 shown in FIG.
Pull it in the direction of arrow A in Figure 5 and pull it outward. At this time, since both string-like members are thread-like, they are pulled out lightly, and while the first string-like member 6 unseals the water bag 3, the second string-like member 7 unseals the outer bag 5. In this outer bag 5, as shown in FIG.
Since the string-like member 7 is temporarily bonded and the cut line 11a that receives the tensile force is only temporarily sealed with the sealing member 12, the unsealing start end piece 11 can be easily separated from the cut line 11a. It will be done. Since this unsealing start end piece 11 cracks the outer bag 5 at its center, the outer bag 5 is opened with a wide left and right width in the front and back direction. Moreover, the unsealing start end piece 11 is held inside the rear end 2e of the heat generating case 2 in a turned over state, and is fastened without being taken out to the outside.

On the other hand, in the water bag 3, as shown in FIG. It cracks. Moreover, since the water bag 3 is weakened in the front-rear direction, it can be easily opened from the front part 3a at the center to the rear end 3b. As a result, as shown in FIG. 5, water in the water bag 3 leaks out and comes into contact with the heat generating material, causing a hydration reaction. At this time, since the water bag 3 is opened wide, the heat-generating material permeates almost the entire surface of the bag 4 evenly, and a uniform heat-generating effect is obtained.

In this way, the generated heated steam rises from the widely opened outer bag 5 and passes through the pores 15.
It is sent into the food case 9 and heats the object to be heated. At this time, the heat-generating material bag 4 maintains its waterproof effect until the water bag 3 is opened, so that the desired heat-generating effect necessary for cooking is produced, and the object to be heated is cooked to a temperature suitable for eating.

Note that the first string member 6 and the second string member 7
is not limited to string, but may also be a thin wire such as wire. Moreover, by changing the container of the heated object, not only food but also drinks etc. can be heated and cooked.

(Effects of the Invention) As explained above, in the present invention, the first string-like member for opening the water bag and the second string-like member for opening the outer bag are pulled out to the outside of the outer bag housing the heat generating case. Therefore, the heat generating device can be operated by simply pulling both string-like members. Therefore, handling operations when heating an object using this heating device are extremely simple. Also, when setting this heat generating device in a container containing an object to be heated,
Since the first string-like member and the second string-like member can be pulled out to the outside of the container, the container is not bulky and compact, and its versatility is increased. In addition, since the water bag and the outer bag can be opened wide at the same time from the front end to the back end, the water and the heat generating material can come into contact evenly, and heated steam is generated from the entire heat generating case, and the outer bag can be opened evenly. Since it can be dissipated outward, the object to be heated can be evenly heated to an appropriate temperature. In addition, since the heat generating case that houses the heat generating material is housed in a water-impermeable outer bag, it is possible to prevent the heat generating material from absorbing moisture or water, and when using the heat generating device, the desired heat generating effect can be obtained. , it has excellent effects such as being able to heat the object to be heated to an appropriate temperature.

[Brief explanation of drawings]

1 to 5 show embodiments of the present invention, FIG. 1 is an exploded perspective view of a food container housing a heat generating device, and FIG. 2 is a perspective view illustrating the outer bag of the heat generating device and its opened state. , FIG. 3 is a perspective view illustrating the water bag 3 of the heat generating device and its unsealed state, FIG. 4 is a sectional view of the food container and the heat generating device, and FIG. 5 is an explanatory diagram of the operation of the heat generating device housed in the food container. It is. 1... Heat generating device, 2... Heat generating case, 5... Outer bag, 6
...First string member, 7... Second string member, 11... Opening start end piece.

Claims (1)

[Scope of Claims] 1. A heat-generating material that generates heat through a hydration reaction, a water bag placed on the lower surface of the heat-generating material, a heat-generating case that houses the water bag and the heat-generating material, and an outer shell that houses the heat-generating case. a bag, the front end of the water bag is fixed to the front end of the heat generating case, and a first string member having one end fixed to the heat generating case is attached along the lower surface of the water bag,
Arranging the water bag from the rear end to the front end and passing it from the bottom surface to the top surface of the water bag, further distributing it from the front end to the rear end along the top surface of the water bag and pulling it out to the outside of the outer bag,
A second string-like member, one end of which is fixed to the heat-generating case, is arranged along the inner surface of the outer bag from the rear end to the front end of the heat-generating case, and extends from the inner surface to the outer surface of the outer bag at the front end of the outer bag. Take it out and place it to the rear end of the outer bag,
A heat generation device characterized in that an opening start end piece having a left-right width and opening in the front and rear direction of the outer bag is formed at the front end of the outer bag, and a second string-like member is wrapped around the opening start end piece. Device. 2. The heat-generating device according to claim 1, wherein the first string-like member and the second string-like member are fixed to a flat surface of the heat-generating case. 3. The heat generating device according to claim 1, wherein the outer bag is weakened in the front-rear direction. 4. The heating device according to claim 3, wherein the opening start end piece is formed by a U-shaped cut line directed from the front end to the rear end of the outer bag. 5. The heat generating device according to claim 4, wherein the cut wire is temporarily sealed with a sealing member. 6. The heat generating device according to claim 1, 3, or 4, wherein a second string-like member is temporarily bonded to the inner surface of the opening start end piece.