JPH01320024A - Heat generating device - Google Patents

Abstract

PURPOSE:To prevent absorption of moisture by heat generating material and facilitate unsealing work for an outer bag and a water bag so as to make handling easier by containing a heat generating case containing the heat generating material and the water bag in an outer bag, and providing a first and a second cord member fixed at the heat generating case at one end. CONSTITUTION:For a heat generating device 1, a heat generating case containing a water bag 3 and a bag 4 of heat generating material are contained in an outer bag 5 and disposed in a lower part of a food container 8. The water bag 3 is of polyethylene, where water for heating is filled preliminarily, and a forward and end part 3a is fixed at an inner side wall of a forward end 2d of the heat generating case 2 and provided with a first cord member 6. The bag 4 of heat generating material is of nonwoven fabric which is well absorbent, and a predetermined quantity of raw lime (CaO) which generates heat by hydraulic reaction is filled in it. The outer bag 5 is of polyethylene to which water is not permeable, and a forward end part 5a is provided with an unseal starting end piece, which is provided with a second cord member 7. For using the food container 8, subject matter such as rice and topping is put in it, and a cover 14 is provided. Then the first cord member 6 and the second cord member 7 are pulled, thereby the subject matter is heated.

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.

1,! (Prior Art) Recently, food containers equipped with a heating device have become well known as food containers for conveniently heating instant foods such as cooked take-out lunches and cup noodles. 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 (Japanese Unexamined Patent Publication No. 62-16
(See 371 Publication). This device has a water bag and a heating element that generates heat when water is added to a compartment formed between an outer container for storing cup noodles and an inner container. and,
A plurality of through holes are bored 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 leaking from the water bag is adhered 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 multiple through holes in the outer container, which communicates the inside and outside of the container, so it is easily affected by the outside air and has the disadvantage of allowing moisture to 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 necessary to heat the object to be heated cannot be obtained, causing the problem that the food and drink are not heated to the appropriate amount, resulting in loss of flavor and making the food unsuitable for consumption. there were.

Therefore, it has been considered and proposed to house the heating element and the water bag in a heat-generating container, and to wrap the heat-generating container in an impermeable outer bag to cut off contact with the outside air. Generally, such a heating device is provided under a food product and housed 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 such as the one 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, heated steam is guided to the food side. Also,
When the food container is covered with a storage bag, there is a problem in that the work of opening the bag increases and handling becomes 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 the heat generating material. It is equipped with a heat generating case for storing the heat generating case and a bag for accommodating 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 attached to the water bag. Along the bottom surface of the water bag, from the rear end to the front end of the water bag, pass 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, to pass the outside of the outer bag. A second string-like member that is pulled out toward the side 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 of the outer bag, and An opening start end piece is formed at the front end of the outer bag, which is taken out from the inside to the outside and arranged to the rear end of the outer bag, and opens the outer bag in the front and back direction with the required width. A string-like member is strung around it.

(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, the heat generating material is maintained in a state where it does not absorb moisture or the like, so that when the heat generating device is used, it can generate a desired amount of heat due to the hydration reaction.

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 start 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 exothermic 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 includes a heat generating case 2 containing a water bag 3 and a heat generating material 4 housed in an outer bag 5, and a first string member 6 and a heat generating case 2 containing a heat generating material 4. It is configured to include two string-like members 7 and to be placed 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 has a bottom portion 2a.
A plurality of protrusions are provided at required locations to form the leg portions 2b.

A heating source consisting of a water bag 3 and a heat-generating material 4 is housed in the bottom surface 2c, and direct contact between this heat source and the food container 8, which will be described later, is prevented to prevent the food container 8 from melting due to heat generation. Prevent deformation.

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-like member 6 is for opening the water bag 3 and is made of hemp string, nylon fiber, etc.
One end 6a is firmly fixed to the bottom part 2a of e using an adhesive sheet 10. Then, the rear end 2e of the heat generating case 2
It is arranged from the rear end 3b of the water bag 3 to the front end 3a along its lower surface 3C via a notch 2f formed on the edge of the water bag 3. 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. Furthermore, it is arranged along the upper surface 3d of the water bag 3 from the front end 3a to the rear end 3b, and the other end 6b is pulled out from the outer bag 5, which will be described later. The heat-generating material 4 is a highly water-absorbing nonwoven fabric, and is filled with quicklime (Cab) that generates heat through hydration reaction in a predetermined amount necessary for heating, which is the same as the amount of water described above. The exothermic material 4 is placed on the upper surface 3d of the water bag 3, and is housed in the outer bag 5 together with the exothermic 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-rear direction, and has an opening end piece 11 at the front end 5a. , second
A string-like member 7 is provided. This opening start end piece 11 is for opening the center of the outer bag 5, and is formed by providing a U-shaped cut line 11a facing the front end 5 lip. 11a is temporarily sealed with a sealing member 12, for example, an adhesive tape 12 that is slightly larger than the unsealing starting end piece 11 and is easily peeled and is known as Dumpron Ace.This temporary sealing seals the cut line 11a. This is done by pasting the sealing member 12 from the outer surface 5d of the outer bag 5.
The heat generating case 2 is housed in the front and rear ends 5a and 5b.
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.
In the outer bag d, 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 of the outer bag 5 through f. At this time, the second string member 7 is temporarily adhered to the inner surface of the opening start end piece 11 with an adhesive tape 13 made of the same material as the sealing member 12, making it easy to pull the opening start end piece 11. . The second string member 7 is arranged from the front end 5a to the rear end 5b along the outer surface 5d of the outer bag 5, and the other end 7b is attached to the outside of the food container 8, which will be described later, together with the first string member 6. It's being pulled out. In addition, a notch 8c is provided at the center of the upper end on the rear end side of this food container 8,
The first string member 6 and the second string member 7 are passed through this notch 8c. Reference numeral 16 denotes a grip portion that binds the thread-like opening members 6 and 7 together to facilitate a pulling operation. food container 8
As shown in FIGS. 1 and 2, it is a rectangular box with an upper opening, made of plastic or the like, and has an opening 8a covered with a lid 14. That is, an edge 8b is formed at the periphery of the opening, and a fitting part 14a provided on the lid 14 is fitted into this edge 8b, so that the lid 14 is attached to the food container 8.
4. Close the lid.

The food case 9 is also made of plastic, and is housed in the food container 8 with objects to be heated, such as steamed buns and gyoza. This food case 9 is provided with an edge 9b around the opening 9a, and this edge 9b is connected to 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 is provided with a plurality of slit-like pores 15 through which heated steam can be discharged into the food case 9 from below.

When using the food container 8 configured as described above, an object to be heated such as a seasoned food 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 4 does not absorb moisture contained in the air or moisture 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. 4 are pulled in the direction of the arrow in FIG. 5 and pulled out. At this time, the both male and female members are thread-like, so they are pulled out, and the first string member 6 unseals the water bag 3, while the second string member 7 unseals the outer bag 5. As shown in FIG. 2, when the unsealing starting end piece II of the second string member 7 is subjected to a tensile force, the second string member 7 is attached to the inner surface of the unsealing starting end piece 11.
are temporarily glued and the cut line 11 receives tensile force.
Since the two parts are only temporarily sealed with the sealing member 12, the opening start end piece 11 can be easily separated from the cut line 11a. Since this opening start end piece 11 cracks the outer bag 5 at the center, the outer bag 5 becomes thicker in the front and rear direction with a left and right width (unsealed). It is held inside the rear end 2e of and is fastened without being taken out.

On the other hand, in the water bag 3, as shown in FIG. 3, when the front end 3a of the water bag 3 around which the first string member 6 is wrapped is subjected to a tensile force, it cracks due to the cutting force of the thin string. Also,
Since the water bag 3 is weakened in the front-rear direction, it can be easily opened from the front end 3a to the rear end 3b at the center. 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 water permeates almost the entire surface of the heat generating material 4, and a uniform heat generating effect is obtained.

In this way, the generated heated steam rises from the widely opened outer bag 5 and is sent into the food case 9 through the pores 15 to heat the object to be heated. At this time, the heating bag 4 maintains its waterproof effect until the water bag 3 is opened.
The desired exothermic 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-like member 6 and the second string-like member 7 are not limited to strings, but may be thin wires such as wires.

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, the present invention provides the first method for opening the water bag.
Since the string-like member 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, the heat-generating device can be activated by a simple operation of pulling both string-like members. I can do it. Therefore, handling operations when heating an object using this heating device are extremely simple.

In addition, when this heat generating device is set in a container containing an object to be heated, the first string-like member and the second string-like member can be pulled out to the outside of the container, making it less bulky and compact, increasing versatility. It will be done.

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 the drawing]

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.

Claims (5)

[Claims] (1) Equipped with a heat generating material that generates heat through a hydration reaction, a water bag placed on the bottom surface of the heat generating material, a heat generating case that stores the water bag and the heat generating material, and an outer bag that stores the heat generating case. , the front end of the water bag is fixed to the front end of the heat generating case;
A first string-like member, one end of which is fixed to the heat generating case, is placed along the bottom surface of the water bag from the rear end to the front end of the water bag, passed from the bottom surface to the top surface of the water bag, and then a second string-like member arranged along the upper surface from the front end to the rear end and pulled out to the outside of the outer bag, and one end of which is fixed to the heat generating case;
Arrange the heating case along the inner surface of the outer bag from the rear end to the front end, take it out from the inner surface of the outer bag to the outer surface at the front end of the outer bag, and arrange it to the rear end of the outer bag. A heat generating device characterized in that an opening start end piece that is opened in the direction of the 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. (2) The heat generating device according to claim 1, wherein the first string member and the second string member are fixed to the lower surface of the heat generating case. (3) The heat generating device according to claim 1, wherein the outer bag is weakened in the front-back direction. (4) The heat generating 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 line 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.