JPH0640701U - Excavation - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a lightweight excavated pit that has high heat retention efficiency and shallow depth. [Constitution] A box body 1 in which a bottom plate 11, a front side plate 12, a rear side plate 13, a right side plate 14 and a left side plate 15 which are formed by a heat insulating plate in which a styrofoam plate is fitted into a wooden square bar are combined.
Form 0. An equilateral L-shaped steel 22 for supporting the box on the floor is fixed to the upper end of the box side wall. A veneer plate 23 to which a decorative cloth is attached is attached to the inner wall surface of the box. RMS that combines heat insulation and decoration on the outer wall of the box
The urethane layer 24 is applied. A flat bag-shaped body 30 filled with a heat storage agent is placed on the inner bottom surface of the box,
By heating the nichrome heater coated on the bottom surface of the bag-shaped body, the heat storage agent is heated and melted, and the bag-shaped body can be used as a heat storage heater for 5 to 6 hours. The box body is embedded under the floor surface, and the foot stand is placed on the floor surface to form the excavation pit.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a digging pit.

[0002]

[Prior art]

 Conventionally, the excavated kotatsu is a wooden box embedded below the floor, with a legged base installed on the floor and equipped with an electric heater on the back side, and warmed from above by the electric heater. There is something I did. In addition, as another excavation, an electric heater is attached to the bottom of a wooden box embedded below the floor through a cage, and a foot stand is placed on the floor. There are things I tried to warm.

[0003]

[Problems to be solved by the device]

 However, in the former digging kotatsu, the electric heater is provided on the back surface of the leg base, so that when a person enters the digging kotatsu, the foot easily hits the electric heater and becomes an obstacle, and However, the upper half of the foot tends to be overheated, but the lower half of the foot, especially the tip of the foot, is difficult to heat. In the latter case, the electric heater is attached to the bottom of the box through the cage, so there is no problem as in the former case, but the box and the electric heater of considerable thickness must be provided at the bottom of the box. Since the box must be deeper, there is a problem that the excavation pit cannot be installed on the second floor due to the size of the ceiling.

In addition, each of the above-mentioned excavated kotatsu has a problem that the thermal efficiency of the excavated kotatsu is not good because it is a wooden box and its heat insulation is not sufficient, and it is heavy because it is made of wood. There is a problem that is complicated. In addition, since all of the above-mentioned excavations are of the electric heater type, it is necessary to always connect the cord to the power supply when using it, and the cord is an obstacle and is not easy to use. is there. SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, and an object thereof is to provide a digging pit which is lightweight, has high heat retention efficiency, and has a shallow depth.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the constitutional features of the present invention are a box body formed by combining heat insulating materials and embedded below the floor surface, and a heat storage inside the box body laid on the bottom surface of the box body. It is provided with a flat bag-like body filled with a material, an electric heater attached to the bag-like body, and a legged table provided on the floor surface.

[0006]

[Operation and effect of the device]

 In the present invention constructed as described above, since the box body is made of a heat insulating material, the heat retaining property is very good, and it is lightweight and convenient to handle. Also, the electric heater melts the heat storage material in the bag to bring it to a constant temperature, so that the cord can be removed and used for about 5 to 6 hours, so the heat utilization efficiency is good and the excavation Maintenance costs can be reduced. In addition, since the cord may be removed after heating for a certain period of time, it can be used without worrying about the cord, and there is no need to worry about accidents due to the loss of the cord. Furthermore, the heating place and the use place of the bag-shaped body can be separated, and the use range of the excavation pit can be expanded. Also, by providing a bag-shaped body with a thin electric heater at the bottom of the box, the depth of the box can be reduced, and it is possible to use it on the second floor, which was difficult in the past. You are no longer limited to where you use it.

[0007]

【Example】

 Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings. FIG. 1 is a schematic view of an excavated kotatsu according to the present invention. This excavated kotetsu is provided with a box body 10 having a square bottom formed by a heat insulating plate. As shown in FIGS. 2 to 5, the box body 10 is composed of a bottom plate 11, a front plate 12, a rear plate 13, a right side plate 14, and a left side plate 15, and the front side plate 12, the rear side plate 13, and the right side plate. 14 and the left side plate 15 are symmetrical with each other.

As shown in FIG. 2, the bottom plate 11 is formed into a substantially square shape by joining two rectangular plate-like bodies 11 a and 11 b together. Each plate-shaped body 11a, 11b has the same thickness as the rectangular bar in a frame formed by two long rectangular bars 11a1, 11b1 made of wood and three short rectangular bars 11a2, 11b2 made of wood. Two styrofoam plates 11a3 and 11b3 are fitted into each other. As shown in FIG. 3, the front side plate 12 is a rectangular plate-like member, and has the same thickness as the rectangular bar in a frame formed by two long rectangular bars 12a made of wood and two short rectangular bars 12b. It is formed by fitting two styrofoam plates 12c. The rear side plate 13 has the same structure. As shown in FIG. 4, the right side plate 14 is a rectangular plate-like member, and has the same thickness as the rectangular bar in a frame formed by two long rectangular bars 14a made of wood and three short rectangular bars 14b. It is formed by fitting two styrofoam plates 14c. The left side plate 15 has a similar structure.

As shown in FIGS. 5 and 6, an equilateral L-shaped steel 22 is fixed to the upper end portion of the side wall of the box body 10 configured as described above. A veneer plate 23 having a decorative cloth 23a attached to the entire surface of the inner surface of the box 10 is attached. An RMS urethane layer 24 for decoration, which also has heat insulating properties, is applied to the entire outer surface of the box body 10 excluding the equilateral L-shaped steel 22.

On the bottom surface of the box body 10, a flat bag-shaped body 30 filled with a low-temperature heat storage material that melts by heating at about 56 ° C. is laid inside. A covered nichrome heater 31 is tightly attached to the bottom surface of the bag-shaped body 30. The nichrome heater (not shown) is attached to the side wall of the box body 10 and is connected to the cord 31 extended to the outside. The nichrome heater is heated by the power supply from the power source, and the heat storage material in the bag body 30 is removed. Melt and bring to a prescribed temperature of 56 ° C or higher. When the box body 10 is used, the lower side of the equilateral L-shaped steel 22 is placed on the floor surface and is inserted under the floor surface. An unillustrated pedestal with legs is provided on the floor surface, and a draping cloth or the like is put on the pedestal to be used as a moat pistil.

The excavated kotatsu constructed as described above mainly uses a lightweight heat insulating plate made of styrofoam, so that the excavated kotatsu is excellent in heat insulating property and lighter in weight than the conventional wood excavated kotatsu. Therefore, by using the bag-shaped body filled with the heat storage material that is heated and melted, it is possible to sufficiently keep the temperature inside the excavated pit for a long time of about 4 to 5 hours. In addition, the bag-shaped body can be heated by heating for about 1 hour, which is necessary to maintain the heat storage material at about 56 ° C. After that, the cord can be removed without disturbing the cord. Moreover, it is convenient for users because they do not have to worry about accidents caused by the code. It can also be used by heating it in a place other than the room where only the bag is used, and in this case, the excavation pit can be made completely cordless, which can be very simple.

In addition, the bag-shaped body provided with a dichrome heater on the bottom has a very thin thickness, and the depth of the excavated burnt is deeper than that of the heater part composed of the cage and the electric heater used in the conventional burnt burnt. Do not let Therefore, when using it, it became possible to install a digging pit on the second floor, which was difficult in the past, and there was an effect that there was no restriction on the place of use.

In the above embodiment, styrofoam is mainly used as the heat insulating material, but other resin material having heat insulating property may be adopted. Further, instead of the nichrome linear heater, a ribbon heater, a planar heater, or the like may be used, or a ceramic heater or the like may be used. Further, the shape of the excavated pit is not limited to the above embodiment, and may be changed to any shape such as a cylindrical shape. Further, as the heat storage agent, a high temperature type that melts at 80 ° C. or higher may be used.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing an entire excavated pit according to an embodiment of the present invention.

FIG. 2 is a bottom view of the excavated kotatsu.

FIG. 3 is a front side view of the excavated kotatsu.

FIG. 4 is a right side view of the excavated kotatsu.

FIG. 5 is a top view of the excavated kotatsu.

6 is a sectional view taken along line VI-VI in FIG.

[Explanation of symbols]

10; Box, 11; Bottom plate, 12; Front side plate, 13; Rear side plate, 14; Right side plate, 15; Left side plate, 22; Equilateral L-shaped steel,
23: Veneer board, 30: Bag-shaped body.

Claims (1)

[Scope of utility model registration request] 1. A box body formed by combining heat insulating materials and embedded below the floor surface, a flat bag-like body laid on the bottom surface of the box body and filled with a heat storage material, and the bag-like shape An excavated kotetsu, characterized by comprising an electric heater attached to the body and a legged base provided on the floor surface.