JP3078618B2 - Hydration reaction type heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a heater for maintaining a warm state.

[0002]

2. Description of the Related Art In many cases, a hot dish is preferably eaten immediately after being cooked. However, if it is eaten after a while after cooking, the dish may become cold. is there. In such a case, the cooked food is re-heated by a heater such as a gas range to reproduce the state immediately after the cooking, and is eaten. Also, in the case of eating a served dish over a long time, such as a banquet, the dish will cool down while being eaten, so always heat it with a gas range or solid fuel. By doing so, the dishes were kept warm. However, since these heaters must use fire, it is required to develop heaters that are served before customers and have no danger such as ignition. In this case, it is conceivable that the quicklime is heated by the heat of reaction at the time of the hydration reaction.

As a conventional hydration reaction type heater, a water-permeable bag in which a heating agent is sealed, a water bag, and a water container, each of which is composed of a container body and a saucer placed on the container body, are provided. And those stored in a stack. The container body is heat-resistant,
It has thermal insulation, such as cardboard, plastic,
The pan is made of a polymer foam material or the like, and the saucer is for placing a dish or the like on the upper surface thereof and is made of a heat-resistant material. When using this hydration-type heater, open the water bag by hand or break it by some means to release the water inside the water bag, absorb this water into the heating agent, and By causing a sum reaction, the dishes and the like above the saucer were heated.

[0004]

However, in the above-mentioned hydration reaction type heater, the water bag is broken for heating, but since the water bag is not completely removed from the container, The water bag remaining inside the container with the water released may come into close contact with the water-permeable bag, and in this case, only the part where water is not blocked by the water bag enters the water-permeable bag. A phenomenon such as a large transmission occurs. In addition, the exothermic agent causes a local reaction to generate not only high heat partially, but also because the water does not readily reach the whole, the hydration reaction is not smoothly performed, and it takes time to obtain a desired calorific value. Has been required.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a hydration-reaction-type heater which generates quick and sufficient heat by a simple operation. .

[0006]

In order to achieve the above object, according to the present invention, a container in which a water-permeable bag enclosing a heating agent which generates heat by a hydration reaction is housed, and a container between the container and the container. A tray placed on a container with the water-permeable bag interposed therebetween, wherein the tray has a placement section on which an object to be heated is placed, and heat from a heating agent is transmitted to the object to be heated. A heat transfer hole, a water injection part for pouring water into the inside of the container, and a water distribution groove having a slope descending in a direction away from the water injection part and allowing water to flow at an upper part of the water-permeable bag body, are provided. A plurality of water spray holes for dropping water flowing inside into a water-permeable bag at the bottom of the tray are provided at the bottom of the tray.

[0007]

According to the hydration-reaction heater of the present invention, when water is poured into the water injection portion of the tray placed on the container, the water flows into the water distribution groove, and the water distribution groove descends in a direction away from the water injection portion. The water flows along the inside of the water distribution ditch along the slope. At the bottom of the water distribution groove, a plurality of watering holes are provided in communication with the inside of the container, and water is dropped into the container while flowing inside the water distribution groove, and the water is dropped on the water-permeable bag disposed at the lower part of the water distribution groove. And is absorbed by the water-permeable bag, undergoes a hydration reaction with the exothermic agent inside the bag, and generates heat. The heat is transmitted to the object to be heated placed on the laying portion above the tray through a heat transfer hole provided in the tray.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A hydration reaction type heater according to one embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a hydration reaction type heater (hereinafter simply referred to as a “heater”) 1 according to the present embodiment is a container 4 in which a water-permeable bag body 3 enclosing a heating agent 2 is housed. And a receiving tray 5 placed on the container 4 with the water-permeable bag 3 sandwiched between the container 4 and the container.

The container 4 has a circular horizontal bottom plate 4a,
An inner peripheral wall 4b in which the outer peripheral portion of the bottom plate 4a is raised, and an outer peripheral wall 4c in which the inner peripheral wall 4b is further turned outward,
It is integrally formed into a tub shape having a double peripheral wall. A plurality of rib-like projections 6 are formed on the lower surface of the bottom plate 4a, have a thin vertical cross section that can be injection-molded as a whole, and have a heat-resistant and heat-insulating material, such as plastic. Made of material.

In the receiving tray 5, a circular heat transfer hole 7 opened at the center, a water distribution groove 8 surrounding the heat transfer hole 7, and a water distribution groove 8 are further formed. At the surrounding position, there is provided a flange-shaped laying portion 10 on which an object to be heated 9 such as a dish which is suspended on the upper edge 4d of the container 4 and served on a plate is placed on the upper surface 10a. And the saucer 5
Has a thin vertical section that can be injection-molded similarly to the container 4, and is made of a material such as a heat-resistant soft resin.

An outer edge 1 is provided on an upper surface 10a of the placing portion 10.
A water injection portion 11 is provided at one location with a slope that descends from 0b toward the water distribution groove 8, and three ribs 12 are provided on a lower surface 10c of the water injection portion 11. It is arranged at a position that equally divides the laying part 10 together with 11a. The ribs 12 and the projections 11a on the back of the water injection section 11 are
A gap 13 is provided between the container 4 and the tray 5 by the two portions 12 and 11a, which are simultaneously in contact with the upper edge 4d of the container 4. The bottom 8a of the water distribution groove 8 is highest near the water injection section 11 and is inclined so as to become lower as the distance from the water injection section 11 decreases.
A watering hole 14 communicating with the inside of the container 4 is provided. The number and size of these water sprinkling holes 14 are determined in consideration of the flow velocity of the water flowing inside the water distribution groove 8 and the like so that the water drops uniformly from the water sprinkling holes 14. In the example shown in FIG.
Eight watering holes 14 are provided at positions that equally divide the water distribution groove,
The water sprinkling hole 14a near the water injection part 11 is small because water is directly poured from the water injection part 11, and the water sprinkling hole 14b at the lowest position of the water distribution groove 8 is small because water easily accumulates. 14c is greatly perforated.

The material of the water-permeable bag 3 is as follows.
Any paper, cloth, nonwoven fabric or the like that can easily transmit water over the entire surface may be used, but in the present embodiment, this is made of paper. A heating agent 2 such as quicklime which generates heat by a hydration reaction is provided inside the water-permeable bag 3.
Is enclosed in a space 15 formed by the container 4 and the tray 5.

When water is poured into the water injection section 11 of the heater 1 having the above-described configuration, the water flows from the water injection section 11 into the water distribution groove 8, and inside the water distribution groove 8, the water flows from the water injection section 11 to the entire water distribution groove by inclination. Flows to And the bottom 8a of the water distribution groove 8
Are uniformly dropped into the inside of the container 4 through the eight watering holes 14 provided in the container 5, and are absorbed by the water-permeable bag 3 placed under the receiving tray 5. The exothermic agent 2 is housed in the water-permeable bag 3, and water is evenly applied to the exothermic agent 2 to cause an even and smooth hydration reaction, thereby reducing the desired heat of reaction in a short time. Obtained without causing local high temperatures. Then, the heat generated by this is transferred to the object 9 placed on the tray 5 through the heat transfer hole 7 at the center of the tray 5.

As described above, the operation of the heater of the present embodiment is simple because it is possible to heat a dish or the like simply by pouring water from one water injection unit 11. Then, the poured water flows along the slope provided in the water distribution groove 8, and the water distribution groove 8
Is uniformly dropped on the exothermic agent 2 in the container 4 from the watering hole 14 provided in the bottom 8a of the container 4, so that an even and smooth hydration reaction can be obtained, and the food or the like can be sufficiently heated. In addition, since the peripheral wall of the container is a double peripheral wall as described above, the heat retaining property is improved, and a dish that is eaten over a long time can be maintained in a warm state for a long time. .

Further, a gap is formed between the container 4 and the tray 5, and steam generated by heat is discharged to the outside through the gap 13, so that the pressure inside the container 4 does not increase, and the container 4 is safe. is there. Further, the container 4 has a double peripheral wall 4.
b, 4c, and a rib-like projection 6
Is formed, so that it does not directly contact the inner peripheral wall 4b and the bottom surface 4a of the container 4 heated by the hydration reaction, and it is safe to carry the container 4 after heating. Since the tray 5 on which the object to be heated 9 is placed is formed of a soft resin, the object to be heated 9 does not slip and the dish inside does not spill.

Further, since the heater 1 is made of a material such as plastic, the entire structure can be made light and easy to carry, and as a consumable item, only the water-permeable bag body 3 in which the heating agent 2 is sealed. And there is an advantage that the cost can be reduced.

In one embodiment, the circular heat transfer hole 7 is provided at the center of the tray 5 and the water distribution groove 8 is provided so as to surround the heat transfer hole 7, as shown in FIG. In addition, a plurality of heat transfer holes 16 are provided in the receiving pan 17, and a water distribution groove 18 is provided so as to sew between the heat transfer holes 16.
9 may be provided as appropriate. Further, as shown in FIG.
The entire inside of the tray 20 may be used as the water distribution groove 21, and the heat transfer hole 22 and the water spray hole 23 may be shared.

Although the tray 5 is made of a soft resin or the like, the tray 5 may be formed of a hard resin or the like, and a soft resin for preventing slippage may be bonded to a contact surface with the object 9 to be heated. Good. The material of the container 4 and the saucer 5 is plastic,
The material is not limited to a resin or the like, but may be a material such as wood or aluminum. The shape is not limited to a circular shape and may be a polygon or other shapes. Further, the number, size, and the like of the watering holes 14 provided at the bottom 8a of the water distribution groove 8 are arbitrarily set.

[0019]

As described in detail above, according to the hydration-reaction heater of the present invention, water is distributed to the entire area of the container simply by pouring water from the water injection section, and is uniformly dropped by being uniformly dropped on the exothermic agent. And a smooth hydration reaction can be obtained, which is advantageous in that quick and sufficient heat can be generated by a simple operation.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a hydration reaction type heater according to one embodiment of the present invention, cut along a plane passing through a water injection section.

FIG. 2 is a plan view of the heater of FIG. 1 as viewed from above.

FIG. 3 is a perspective view showing a modified example of the receiving tray.

FIG. 4 is a perspective view showing another modification of the receiving tray.

[Explanation of symbols]

 2 Heat generating agent 3 Water-permeable bag 4 Container 5, 17, 20 Receiving tray 7, 16, 22 Heat transfer hole 8, 18, 21 Water distribution groove 10 Laying part 11 Water injection part 14, 19, 23 Watering hole

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-64-67532 (JP, A) JP-A-2-15144 (JP, U) JP-A-63-147125 (JP, U) JP-A-1 128723 (JP, U) JP-A 1-155934 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47J 36/28 F24J 1/02

Claims (1)

(57) [Claims] 1. A container (4) in which a water-permeable bag (3) enclosing a heating agent (2) generating heat by a hydration reaction is housed, and the water-permeable bag is placed between the container (4) and the container. In a heater comprising a saucer (5, 17, 20) sandwiched and placed on a container, the saucer (10) has an upper portion on which an object to be heated is placed.
And heat transfer holes (7, 1) for transmitting heat from the heating agent to the object to be heated.
6, 22) and a water injection section (11) for pouring water into the container,
A water distribution groove (8, 18, 21) having a slope descending in a direction away from the water injection section and allowing water to flow above the water-permeable bag body;
A plurality of water sprinkling holes (14, 19, 23) for dropping water flowing inside into a water-permeable bag at the bottom of the receiving tray are provided at the bottom of the water distribution groove. Sum reaction type heater.