JPS6237741B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a heat storage panel board for heating and cooling that utilizes the floors and walls of buildings, general houses, etc. The purpose of this invention is to have a large heat storage capacity, good thermal efficiency, and to be easy to manufacture. To provide a board for a heat-storage panel that is lightweight and capable of withstanding heavy loads, has good fluidity, quick solidification, and short curing time, can easily pass through a fine wire mesh, and come into close contact with a pipe body clamped on the wire mesh. It is in. In the floor heating system known before the present invention, for example, in the device described in Utility Model Publication No. 1185/1985, concrete is used as the material for the heating element, but concrete contains a large amount of sand and other components. Because it contains rocks such as gravel and crushed stone, it has very low heat storage capacity, and because the heat from the hot water pipes buried inside is immediately dissipated into the room, the temperature of floors and walls rises much more slowly. Moreover, because the surface temperature is low, in order to utilize the radiation heat from infrared rays, it is necessary to raise the hot water temperature to about 80℃, which results in economic disadvantages such as continuous use of high-temperature hot water boilers that consume a lot of fuel. Because they tend to crack easily and are heavy, they are not becoming more popular. In addition, it is known that lightweight foamed concrete is used for the board, but foamed concrete has high insulation properties due to the presence of air in its bubbles, so heat conduction from hot water pipes is poor, and the floor Since the efficiency of surface temperature rise is low, it has hardly been recognized as having any practical value to date. Compared to the conventionally known boards as exemplified above, the board of the present invention is made by removing rock components such as sand, gravel, and crushed stone from concrete as a material, and solidifying by adding water and kneading a mixture of fly ash, quicklime, and Portland cement. Furthermore, short glass fibers or short rock wool fibers are added to the mortar to increase the strength of the mortar and prevent cracking. Since both sides are held together by wire mesh with dimensions slightly smaller than the dimensions of the board, the board, which is mainly made of thin mortar plates, has extremely high mechanical and heat-resistant strength and has a structure that does not crack due to heat. In addition to this, the mortar made from fly ash and cement has fine particles, so the mortar passes through a fine wire mesh and spreads around the entire circumference of the tube, inhibiting heat transfer between the tube and mortar. This eliminates the presence of an air layer between the quicklime and the water, resulting in a board with good heat storage and heat transfer properties, resulting in even higher efficiency. The exothermic reaction promotes the solidification of the board and greatly shortens the curing period, which increases board productivity and reduces the product price, resulting in significant economic effects. It has the following characteristics. The essential components of the first aspect of the present invention are 10% by volume of short glass fibers or short rock wool fibers and 10% to 10% fly ash.
The main body of the board consists of rectangular or square thin mortar plates made from mortar hydrate, which is made by adding water to a mixture of 20% by volume, 10% by volume of quicklime, and 70-60% by volume of Portland cement. A single small-diameter bent tube with good heat conduction, meandering and bending in a plane with the top and bottom sides sandwiched between two fine-mesh wire mesh plates that are slightly smaller than the main body of the board. This is a heat storage panel board in which the entire bent pipe body and fine wire mesh are buried except for the area near the connection port.
The essential structure of the second invention is that two pieces of fine-mesh wire mesh with dimensions slightly smaller than the internal dimension of the form are placed in a rectangular, square, etc. open form with a shallow bottom and a shallow depth. Therefore, the upper and lower surfaces are sandwiched, and the 1st layer has good thermal conductivity and is bent in a meandering manner in a plane.
Place the entire small-diameter bent tube of the book, except for the area near the connection port, with a slight distance from the bottom of the mold, and then add short glass fibers or short rock wool fibers into the mold.
10% by volume, fly ash 10-20% by volume, quicklime
A mortar hydrate prepared by adding water and kneading a mixture of 10% by volume and 70 to 60% by volume of Portland cement is injected, and the bent pipe body and both upper and lower surfaces of the bent pipe body are buried in the mortar. The gist of the present invention is a method of manufacturing a board for a heat storage panel, which is solidified into a thin, flat board in the opening form. The structure, function, and manufacturing method of the heat storage panel board of the present invention will be explained below with reference to embodiments shown in the drawings, but the structure described in the claims of the specification as an essential component of the present invention It goes without saying that all those having the above fall within the technical scope of the present invention, even if there are differences in their embodiments from those described in this specification. Structure and function of the board In Figures 1 and 2, 1 is a board mainly consisting of a thin flat board such as a rectangle or square;
3 is a small-diameter bent pipe made of copper pipe, for example, which has good thermal conductivity and is bent in a meandering manner in a plane buried in the board 1; Two pieces of wire mesh (shown by a double chain line in FIG. 1 and a dotted line in FIG. 2), which are slightly smaller in size than the shaped board 1, and 4 are connection ports. Said board 1 consists of a mortar plate of a mixture of fly ash, quicklime and portland cement to which short glass fibers or short rock wool fibers have been added, concrete consisting of ordinary cement, sand and gravel, crushed stone or cement mortar consisting of cement, sand. Additives such as upper fly ash, quicklime, and glass fiber, which have extremely high heat storage properties, are all very light in specific gravity compared to sand and gravel, which are the components of concrete. The weight of a tatami-sized board (1.4 square meters) is approximately 70
It weighs 1.5 kg and is convenient to carry during construction. The bent pipe body 2 is made of a metal pipe with good thermal conductivity, such as a copper pipe, and the connections at both ends are made by expanding one pipe end with a pipe expansion tool such as an expander, inserting the other pipe end, and attaching a low-temperature spout. Weld by. The specifications of a standard copper pipe are approximately 19 mm in diameter, 0.8 to 1.2 mm in thickness, and 6.3 m in length per board. Arrange them in a pitched manner, with a distance of approximately 100 mm from both ends. The wire mesh 3 should preferably have a fine mesh of about 2 mm, and sandwich both the upper and lower surfaces of the bent pipe body 2 to prevent cracks in the board 1 and the bent pipe body 2 from occurring due to the load applied to the floor. Acts as a reinforcing material to prevent breakage. In addition, when clamping, the bent tube body 2 or the wire mesh 3 is temporarily fixed with an appropriate wire rod.
The performance of the above board is roughly as follows.

[Table] Board manufacturing method When manufacturing the board described above, (1) Prepare a rectangular or square, shallow-depth, open-ended formwork made of iron or wood. (2) Inside this formwork, a wire mesh 3 with dimensions slightly smaller than the internal dimensions of the formwork is used to hold the top and bottom surfaces of the wire mesh 3, which has good thermal conductivity and is meandering and bent in a plane. All the tubes except for the vicinity of the connection port 4 of one small-diameter bent tube 2 are placed with a slight distance from the bottom of the mold. (3)
Next, a mixture of fly ash to which short glass fibers or short rock wool fibers have been added, quicklime, and Portland cement is thoroughly mixed, and water is further added and kneaded to form a fluid mortar hydrate.
The softness of this mortar means that the hydrated mortar can easily pass through the 2 mm square mesh of the wire mesh 3 shown in the embodiment described above and completely fill the entire circumference of the bent pipe body 2. Use as a guide. (4), (3)
The mortar hydrate made by
The wire mesh 3 that clamps the bent tube body and the bent tube body 2 is buried in the mortar hydrate, the surface is leveled as a mortar surface, and deaerated and left to stand. By this, it is solidified into a board 1 mainly consisting of a flat board in a formwork. In the method for manufacturing the board of the present invention, the mortar raw materials include fly ash 10 to 20% by volume;
Mix 10% by volume of quicklime, 70-60% by volume of Portland cement with 10% by volume of short glass fibers or short rock wool fibers, mix this with water and knead well to make a mortar hydrate, but fly ash is The ash produced when pulverized coal is burned is fine particles and can be made into a sufficiently fluid hydrate when mixed with Portland cement. ) and filling the entire periphery of the bent pipe 2 to supply hot or cold water to the bent pipe 2, there is no structure such as air bubbles that impede heat transfer, and good heat exchange is possible. Moreover, it is possible to form a board with higher heat storage properties than concrete or the like. On the other hand, unlike foamed concrete, the large number of pores that it possesses exerts a heat insulating effect and does not extremely impede heat transfer from the bent pipe, thereby inhibiting heat transfer. In addition, since the quicklime in the component undergoes an exothermic reaction during hydration, it has a remarkable effect of gently promoting the solidification of mortar hydrate, and exhibits the function of significantly shortening the curing time of the board. be. Formation of Panels with Boards By connecting and laying a large number of boards manufactured according to the above manufacturing method, a floor or wall surface of a wide area can be formed at will.
That is, regardless of whether it is a newly constructed or partially constructed building, the desired construction floor 5 as shown in FIG. Insulating materials with a thermal conductivity of around 0.02kcal/m.hr・℃, such as strong plastic foam such as Styrofoam (product name), Seldan board (product name), and slightly hard foamed urethane foam, with a thickness of 10 to 25mm. Prepare a flat heat insulating surface 6 with no gaps by spreading sheets, and place the required number of rectangular or square boards 1 on top of this with a slight gap 7 (10 to 15 mm) between the connecting ports 4 for the mutually bent pipes 2.
While connecting them, they are installed in a panel form (see Figure 4). In principle, boards are manufactured in advance at a factory and transported to the site for installation, but if a deformed board is required, for example for the protrusion of a pillar, it is also possible to mold and install the board on-site. As mentioned before, the connection is made by expanding one side of the connection port 4 with a tube expansion tool such as an expander, inserting the protruding connection port 4 of the adjacent board, and welding by low-temperature brazing, etc., but once the piping work is completed, After flushing water into all pipes to wash away the welding residue, perform a water pressure test. Then, the gaps between the boards that make up the panel are filled with the same mortar hydrate as the material that makes up the boards, including the joints of the bent pipes. Next, the panel surface was covered with plastic tiles, linoleum, carpet, tatami, etc.
The floor surface is completed by laying or pasting ceramic tiles or other general flooring material 8. When heating is performed using this floor surface, a reciprocating piping BC is connected to a heat source A such as a hot water boiler, water heater, or solar water heater, and hot water at a temperature of 50 to 75°C is circulated. With hot water, heating can be performed without noise or air contamination due to convection due to two types of thermal effects: conductive heat from the floor and radiant heat from the floor due to far infrared rays. The temperature during heating is controlled by a manual valve (not shown) that adjusts the flow rate of hot water for each room in which each floor is installed, and an electromagnetic automatic valve linked to a thermostat, either separately or by both being installed together. An experimental example of heating using a board panel according to the present invention is as follows. 10 with board dimensions (1.65 x 0.85m x 25mm thickness)
When a sheet of floor is heated with hot water at 60°C, the floor temperature after 30 minutes is 34°C, and after 1 hour of continuous heating, the floor temperature is 42°C, and when the outside temperature is 0°C, it is 70 to 75°C.
Warm water will raise the floor temperature to 38~45℃ and increase the room temperature to 16~24℃.
℃, and it was confirmed that the heating effect remained for approximately 3 hours after heating was stopped. In addition, the board panel using the board of the present invention can perform air conditioning using the same board panel by passing well water or cold water produced by a chiller through the reciprocating piping with a coating to prevent condensation. . As explained above, the invention stated in the first claim of the specification is based on a component that conducts heat poorly, which is rather the opposite of the conventionally known method that mainly uses a good conductor of heat. Since the board is mainly used to form a heat storage board, its components include fly ash, which is highly porous, and gravel, which is the main component of conventional concrete boards. sand.
It has higher heat storage and sound insulation properties than rocks such as crushed stone,
In addition, it has heat retention and insulation effects, and is finely granulated.
It is also much lighter in specific gravity than gravel and sand, which are the main materials of conventional concrete, making the board lighter, easier to carry, and easier to handle.
Furthermore, a mixture of quicklime, Portland cement, and short glass fibers or short rock wool fibers is not only good in terms of heat storage properties, but also has high strength when used on floors, etc. The fibers in the ingredients are fully entangled and solidified in the wire mesh that sandwiched the bent tube body, so the load applied to the floor surface,
Even if the main body of the board expands and contracts due to repeated feeding or stopping of hot and cold water, there will be no separation or cracking from the bent tube or wire mesh. According to the invention stated in the second part of the specification, the quicklime in the mortar hydrate undergoes an exothermic reaction during hydration, so that the solidification of the hydrate can be gently promoted. This makes it possible to significantly shorten the curing time of the board, and also because the re-assembly, together with finely powdered Portland cement, passes through the fine holes of the wire mesh and completely fills the entire periphery of the bent tube. As a result of not creating voids like gravel or crushed stone in conventional concrete, heat transfer from the bent pipe body to the board surface is improved. Since the board is manufactured in an open, bottomed formwork, it is suitable for use with conveyors, etc., for the installation of bent tubes, wire mesh, and hydrate injection, whether by input or automated machinery. There is. In addition to the above, heating by the board panel method using the board of the present invention has the disadvantage that the temperature near the ceiling of the room rises unnecessarily, unlike heating by the conventional convection method for heating indoor air. Instead of heating with a large temperature difference between the top and bottom that does not warm the floor, or radiating heat from a small red-hot infrared source like conventional infrared heaters, it heats a wide area of the entire floor. By using a radiant heat source, there is very little temperature difference between the top and bottom of the room, making it possible to provide heating with little heat loss in accordance with the principle of heat from the head and feet, which is most compatible with the physiology of the human body, and the hot water supply temperature.
Heating is possible using hot water at a relatively low temperature of 50°C, and it has been proven that even after the hot water supply is stopped, the heating effect of the mortar board that makes up the board will store heat for about 3 hours. The fuel consumption required for heating can be reduced by 30 to 40% compared to conventional heating methods while maintaining the same livability, and the direct heat radiation to the human body from wide floor surfaces can be reduced by 30 to 40%. The floor heating using the board panel of the present invention, which has an extremely high heating effect on the skin, is a high-ceilinged atrium structure that requires large heating equipment and consumes a large amount of fuel. It is an economical heating system suitable for places where the floor is often used, such as halls, banks, hotel lobbies, as well as hospitals, kindergartens, schools, etc. There is no risk of noise generation or air pollution. However, it can be said that it is a healthy means of heating.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the board of the present invention;
Fig. 2 is a sectional view of Fig. 1, Fig. 3 is a plan view of a board panel with the board shown in Fig. 1, and Fig. 4 is an explanatory diagram showing an example of a floor configuration using the present invention. FIG. Explanation of the symbols representing the main parts of the diagram: 1... Board, 2... Bent tube, 3... Wire mesh, 4... Connection port (of bent tube 3), 5...
...Construction floor surface, 6...Insulation material, 8...Floor material, A...
heat source.

Claims (1)

[Claims] 1. A mortar made by adding water to a mixture containing 10% by volume of short glass fibers or short rock wool fibers, 10-20% by volume of fly ash, 10% by volume of quicklime, and 70-60% by volume of Portland cement. The main body of the board consists of rectangular or square thin mortar plates made of hydrated material, and two pieces of fine-mesh wire mesh (wire mesh) are slightly smaller than the main body of the board.
A single small-diameter bent tube with good heat conduction that is bent in a meandering manner in a plane with its upper and lower surfaces sandwiched together, except for the area near the connection port, and fine wire mesh. A board for heat storage panels that is entirely buried. 2. Inside a rectangular, square, etc. open formwork with a shallow bottom and a shallow depth, the upper and lower sides of the formwork are covered with two pieces of fine-mesh wire mesh (wire mesh) whose dimensions are slightly smaller than the internal dimension of the formwork. A small-diameter bent tube with good heat conduction that is sandwiched and bent in a meandering plane.
Place the entire pipe body except for the area near the connection port with a slight distance from the bottom of the formwork, and then add 10% by volume of short glass fibers or short rock wool fibers and fly ash into the formwork.
A heat storage mortar hydrate prepared by adding water and kneading a mixture of 10 to 20% by volume, 10% by volume of quicklime, and 70 to 60% by volume of Portland cement is injected into the bent pipe body and the bent pipe body. A method for manufacturing a board for a heat storage panel, in which a fine wire mesh with the upper and lower surfaces of .