JP3176093U - Concrete block with built-in heating element - Google Patents

Abstract

To provide a concrete block with a built-in heating element that has high utilization efficiency of heat generation used in a floor heating system, has high strength, is easy to be removed during manufacture, and has excellent workability.
A heating element built-in concrete block 10 is a concrete block including a heating element 1, and includes a heat insulating structure 2 for preventing heat radiation from the lower surface. The heat insulating structure 2 is formed as a heat insulating paint layer 3 by a heat insulating paint applied to a release facilitating layer 4 made of a nonwoven fabric or a glass fiber cloth provided on the lower surface of the block 10.
[Selection] Figure 1-2

Description

  The present invention relates to a concrete block with a built-in heating element, and in particular, a concrete block with a built-in heating element that is effective in preventing freezing and freezing on the refrigerator floor. The present invention relates to the improvement of concrete blocks with built-in body.

  In industrial refrigerator-freezers, as equipment becomes larger, in order to increase the storage efficiency of goods, conveyance is performed by a forklift, and the floor surface damage in the warehouse increases as the use frequency increases. Especially in the vicinity of the doorway, the temperature difference between the inside and outside of the warehouse is large, and the forklift is frequently used, so the damage is severe and icing often occurs. This increases the risk of accidents, forklifts, personal injury, and damage to the thermal doors during forklift operation.

  Previously, we had dealt with by burying the floor heater during construction work. If it was necessary to replace the floor heater due to damage, etc., the operation of the refrigerator / freezer was stopped for a long time by the replacement work. There was a problem that had to be. In order to solve this problem, the applicant of the present application has developed a concrete block (concrete heater) with a built-in heating element, and has devised a method of constructing a floor (floor) using this (Patent Document 1). This invention not only solved the problem of long-term shutdown during replacement, but also reduced construction time and cost.

Japanese Examined Patent Publication No. 1-14367 “Concrete heater manufacturing method”

Now, although the concrete block (concrete heater) with a built-in heating element was able to solve the problem of floor freezing in an industrial refrigerator-freezer to a high degree, it was not without its points to be improved. That is, the following items.
a) Since a considerable amount of heat from the built-in heating element is also radiated downward, the utilization efficiency of heat generation was poor.
b) The concrete block has a low strain strength, so that it may crack or break during construction or after laying.
c) At the time of manufacture, it was difficult to remove the mold.
d) Since the conventional specification has a considerable weight, the work effort at the time of manufacturing and construction is large.

  Therefore, the problems to be solved by the present invention are, except for the problems of the prior art, a concrete block with a built-in heating element having high heat generation efficiency, a concrete block with a built-in heating element having high strength, and a concrete block with a heating element that is easy to be removed. And, it is to provide a heating element built-in concrete block excellent in workability.

  As a result of studying each of the above problems, the inventor of the present application has come up with the idea that the problem can be solved by making the concrete block with a built-in heating element a heat-insulating structure or an internal structure that increases the strength. That is, the inventions claimed or at least disclosed in the present application as means for solving the above problems are as follows.

(1) A concrete block with a built-in heating element, wherein the concrete block has a heat insulating structure for preventing heat radiation from the lower surface.
(2) The heating element-containing concrete block according to (1), wherein the heat insulating structure is formed on the lower surface of the block using a heat insulating paint.
(3) The heat-insulating concrete block according to (1), wherein the heat insulating structure is formed by a heat insulating paint applied to a release facilitating layer provided on a lower surface of the block.
(4) The heating element-containing concrete block according to (3), wherein the release facilitating layer is a nonwoven fabric or a glass fiber fabric.
(5) The heating element-containing concrete block according to any one of (1) to (4), wherein fiber reinforced concrete or fiber reinforced mortar is used in part or in whole.

(6) The heating element-containing concrete block according to any one of (1) to (5), wherein the heating element is reinforced by a reinforcing structure.
(7) The heating element built-in concrete block according to (6), wherein the reinforcing structure is a reinforcing bar.
(8) The heating element-containing concrete block according to any one of (1) to (5), wherein the heating element is reinforced by at least one of reinforcing bars or mesh bars.
(9) The heating element-containing concrete block according to any one of (1) to (8), wherein the heating element is an electric heater.
(10) The heating element built-in concrete block according to any one of (1) to (9), characterized in that it is for the purpose of preventing freezing of the floor surface.

  Since the concrete block with a built-in heating element of the present invention is configured as described above, according to the present invention, the use efficiency of the heat generated inside is increased and the effect of preventing freezing of the floor in the refrigerator / freezer is enhanced. It is possible to eliminate heat dissipation and improve heat transfer upward, and to effectively use heat generation.

  In addition, according to the present invention, the strain strength of the heating element built-in concrete block can be increased, and the occurrence of cracks and breaks during manufacturing, transportation, and construction can be prevented. Furthermore, according to the present invention, the concrete block with a built-in heating element can be easily removed at the time of manufacture, and workability is improved. In addition, by making the size smaller than before, workability at the time of manufacture, transportation and construction can be improved.

It is a three-view figure which shows an external appearance about the structural example of this invention heat generating body incorporation concrete block. It is sectional drawing of the BB cut surface in FIG. It is principal part explanatory drawing of FIGS. 1-2. It is principal part explanatory drawing in the conventional heat generating body built-in concrete block. It is sectional view explanatory drawing of the principal part which shows another structural example of the concrete block with a heat generating body of this invention. It is sectional view explanatory drawing of the principal part which shows another structural example of the concrete block with a built-in heat generating body of this invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a three-sided view showing an appearance of a configuration example of a concrete block with a built-in heating element according to the present invention. Also,
1-2 is a cross-sectional view taken along the line BB in FIG. 1, FIG. 1-3 is an explanatory diagram of the main part of FIG. 1-2, and FIG. 1-4 is an explanatory diagram of the main part of a conventional heating element built-in concrete block. It is.

  As shown in the drawings, a concrete block 10 with a built-in heating element according to the present invention is a concrete block with a built-in heating element 1 such as an electric heater, and includes a heat insulating structure 2 for preventing heat radiation from the lower surface. This is the main configuration. The heat insulating structure 2 is formed as a heat insulating paint layer 3 on the lower surface of the main block 10 using a heat insulating paint. Specifically, the heat insulating structure 2 can be formed by a heat insulating coating applied to the release facilitating layer 4 provided on the lower surface of the main block 10. As the heating element 1, an appropriate one such as a pipe through which hot water is circulated can be used, but an electric heater is particularly easy to adopt and is convenient.

  With such a configuration, according to the concrete block 10 with a built-in heating element of the present invention, as shown particularly in FIG. 1-3, the heat generated by the heating element 1 is shielded from the downward heat propagation by the heat insulating structure 2, and as a result, upward. And is released as heat H from the upper end of the main block 10, that is, the surface constituting the floor surface. This heat insulation effect can also obtain the effect equivalent to the effect obtained by the 5 mm thickness of the polystyrene foam heat insulation foam.

  That is, unlike the conventional concrete block 910 as shown in FIGS. 1-4, the heat | fever which generate | occur | produced was prevented and the generated heat | fever was efficiently utilized in an upper end surface. Therefore, on the floor surface formed using the concrete block 10 with a built-in heating element, the heat generated by the heating element 1 can be used efficiently, and, for example, icing can be prevented efficiently and energy can be saved.

  Note that a sheet made of an appropriate material can be used as the mold release facilitating layer 4. For example, a nonwoven fabric or a glass fiber fabric can be used suitably. Moreover, when the mold release facilitating layer 4 exemplarily made of a nonwoven fabric or a glass fiber cloth is provided in the lower part of the main block 10, it can be removed when the main block 10 is manufactured using a formwork. It becomes easy.

  FIG. 2 is a cross-sectional explanatory view of a main part showing another configuration example of a concrete block with a built-in heating element according to the present invention. As shown in the figure, this heating element built-in concrete block 210 has a characteristic configuration in which fiber reinforced concrete or fiber reinforced mortar 25 is partially or entirely used.

  With this configuration, the concrete block 210 with a built-in heating element has increased strain strength and breaking strength, and is less prone to cracking and breaking, and the workability is improved during manufacturing, transportation, and construction. In addition, although the structure which used the fiber reinforced concrete 25 etc. for a part (downward) is shown in the figure, the effect which raises intensity | strength is fully acquired even if it uses not only for the whole but for a part.

  FIG. 3 is a cross-sectional explanatory view of a main part showing still another structural example of the concrete block with a built-in heating element according to the present invention. The heating element built-in concrete block 310 has a configuration in which the heating element 31 is reinforced by a reinforcing structure, and a reinforcing bar can be suitably used as the reinforcing structure. As shown in the figure, reinforcing bars 36 or mesh bars 37 can be used as the reinforcing bars, or both of them can be used together.

  According to such a configuration, the strength of the heating element-containing concrete block 310 is increased, and the heating element 31 is reinforced by at least one of the reinforcing bars 36 or the mesh bars 37, which is preferable.

  The heating element built-in concrete block of the present invention described above also has an effect of shortening the manufacturing period. The conventional product requires heating for curing and cannot be demolded until 3 to 5 days after the start of production (after placing), but in the present invention, it is specially heated. It is possible to make specifications that can be treated at room temperature without requiring treatment and can be removed from the mold in about 4 hours.

  Furthermore, the heat generating element built-in concrete block according to the present invention can realize half of the power consumption per block due to its heat insulation effect. That is, for example, it is possible to use a specification that reduces the power consumption of AC200V / 300W to AC200V / 150W.

  In addition, since it can be made smaller than before, the weight can be reduced to, for example, 40% of the conventional one. In this case, what was conventionally required to work by four people at the time of construction, It is possible to work by two people.

  According to the concrete block with a built-in heating element of the present invention, the heat generation efficiency is improved by improving the efficiency of heat generation and improving the anti-freezing effect on the floor in the refrigerator-freezer. Further, by increasing the strength, it is possible to effectively prevent the occurrence of cracks and breaks during manufacturing, transportation, and construction, and the workability is improved, such as easier removal from the mold. Therefore, it is a device with very high utility value in the industrial field and its construction using a freezer / refrigerator / freezer / refrigerator equipment and other facilities that require heating and heat transfer on the floor.

1, 21, 31 ... heating element 2 ... heat insulating structures 3, 23, 33 ... heat insulating paint layers 4, 24, 34 ... demolding facilitating layers 10, 210, 310 ... heating element built-in concrete blocks 25, 35 ... fiber reinforced concrete Or fiber reinforced mortars 28, 38 ... concrete 36 ... reinforcing bars 37 ... mesh bars 91 ... conventional heating element built-in concrete block 910 ... conventional heating element built-in concrete block H ... heat

Claims (10)

A concrete block with a built-in heating element, wherein the concrete block has a heat-insulating structure for preventing heat radiation from the lower surface. The heat-insulating concrete block according to claim 1, wherein the heat insulating structure is formed on a lower surface of the block using a heat insulating paint. 2. The heating element-containing concrete block according to claim 1, wherein the heat insulating structure is formed of a heat insulating paint applied to a release facilitating layer provided on a lower surface of the block. The heating element-containing concrete block according to claim 3, wherein the release facilitating layer is a nonwoven fabric or a glass fiber cloth. 5. A heating element built-in concrete block according to claim 1, wherein fiber reinforced concrete or fiber reinforced mortar is partially or entirely used. The heating element-containing concrete block according to any one of claims 1 to 5, wherein the heating element is reinforced by a reinforcing structure. The heating element-containing concrete block according to claim 6, wherein the reinforcing structure is a reinforcing bar. The heating element-containing concrete block according to any one of claims 1 to 5, wherein the heating element is reinforced by at least one of reinforcing bars or mesh bars. The heating element-containing concrete block according to any one of claims 1 to 8, wherein the heating element is an electric heater. The heating element built-in concrete block according to any one of claims 1 to 9, wherein the concrete block is for the purpose of preventing freezing of the floor surface.

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