JP2559862B2 - Construction method of heat storage type floor heating with low temperature hot water for steel structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a construction method of heat storage type floor heating with low temperature hot water for a steel structure.

[Conventional technology]

Heat storage floor heating with low-temperature hot water is (1) a combination of radiant heating and heat conduction heating. It is possible to obtain an excellent room temperature environment. Since it is a well-balanced heating system, all of the supplied energy is stored in the heat storage floor, so there is no need to heat a useless space unlike the warm air heating system, and energy is saved.

(2) The heat source device only needs to be intermittently operated twice in the morning and the evening, and it is not necessary to continuously operate the heat source device during the heating time.
Also, there is no vibration or noise.

(3) Since it is a heat storage type floor heating system, the following capability to a heat load is remarkably excellent, and the floor temperature and the room temperature in a severe cold region can be sufficiently maintained. Even if the heat source equipment is stopped, changes in the floor temperature and room temperature are very gradual, and the room temperature in the next morning can be maintained at 15 to 16 ° C. Whether it's a wooden floor or a slightly thick carpet, the heating effect is fully exerted. In addition, since it warms up from the shin of the body and the effect of warming the head cold feet is very remarkable, it is possible to live comfortably, at the same time, active and improve work efficiency.

(4) Since the floor temperature can be controlled in all individual rooms and the temperature can be adjusted in 1 ° C. increments, the temperature preferred by the occupants of each room can be obtained. In the middle of the season and when it is slightly cold during the rainy season, floor heating that keeps the floor temperature down without overheating can lead to a very comfortable life.

(5) The device can be freely selected from fully automatic operation and manual operation, and freezing prevention operation can be performed.

(6) Do not dry room air like warm air heating and stoves. Unlike FF heating equipment and other hot air heating equipment, there is no hot air blowout part, so you do not feel wind speed or it feels cold, and you have the freedom of living area.
Comfort is highest. Further, since no combustion equipment for heating is brought into the room, there is no generation of carbon dioxide or carbon monoxide due to oxygen deficiency, and the air is clean and safe heating.

(7) Even in places where hot air heating cannot provide effective heating effects, such as stairwells, rooms with high ceilings, and halls with high ceilings, the heat storage type floor heating system fully exerts its heating effect.

It has advantages such as and is becoming popular.

[Problems to be Solved by the Invention]

In such floor heating, it is necessary to bury a heat transfer pipe in the floor at the stage of building construction, and conventionally, steel pipes, copper pipes, cross-linked polyethylene pipes, etc. are used for piping to the floor. There was an extremely large amount of work, and the time and effort required to construct a large number of curved pipes were enormous, the construction period was long, and it was necessary to construct the pipes carefully so that leakage did not occur. The present invention relates to a steel-framed building, and an object of the present invention is to solve the above problems by performing piping construction using a flexible pipe having excellent disposition workability.

[Means for solving the problem]

The present invention, floor deck rebar is arranged on the deck plate under construction at the construction site, the ratio of ethylene and propylene is 50/50 to 70/30 on the rebar, and the inner diameter is 15 mm and the minimum curvature diameter is A soft and flexible hot water piping material made of EPT rubber tube that can be up to 20 cm (minimum radius of curvature 10 cm) is arranged in a spiral shape in a seamless manner, and then this hot water piping material is built in. It is a method of constructing a heat storage type floor heating by low temperature hot water of a steel structure building characterized by constructing a concrete floor slab on a deck plate and forming a heat storage layer consisting of a concrete floor slab with built-in hot water piping. .

[Action]

The most characteristic point of the present invention is that a flexible hot water pipe material integrally incorporated in a concrete floor slab is spirally arranged on a deck plate of a steel structure building. Thereby, (a) a seamless hot water pipe can be easily laid in a short time. That is, there is no need for angled objects or pipe fittings, and pipe dimensioning, cutting, and connection (welding, screwing,
Work such as gluing) is completely unnecessary.

(B) Only 90 ° or arc-shaped bends are required for the bend, and there is no 180 ° bend like parallel pipes of steel pipes and cross-linked polyethylene pipes, so construction is easy and the flow resistance of the pipeline is low. is there.

(C) Pipes of any shape can be easily made to match a narrow space or a floor with a complicated planar shape.

(D) Since it is embedded in concrete, a separate piping space is not required, and these layers are heat storage layers, which is economical.

The flexible piping material used in the present invention has weather resistance, heat resistance,
Not only corrosion resistance, thermal conductivity, etc., but especially excellent flexibility,
Use EPT (ethylene polyethylene terpolymer) rubber tube or silicone rubber tube.

EPT has excellent heat resistance, weather resistance, and chemical resistance, and can be made into a thin, lightweight, and highly flexible pipe, and a long pipe is supplied. EPT is widely used for tires, hoses, tarpaulins, gaskets, cables, belts and various other industrial products, building materials, household products, etc. The EPT preferably has a specific gravity of ethylene / propylene of 50/50 to 70/30 in order to exhibit good rubber elasticity. The strength and elongation change depending on the ethylene content, additives, etc. The characteristics of the EPT used as the pipe of the present invention are as follows.

Ethylene ratio 65% Clean strength 10-12kgf / cm ² (23 ℃) 100% Tensile stress 50-90kgf / cm ² Elongation 350-550% Hardness 55-65 degrees (JIS-A) This flexible piping material Is excellent in flexibility, and its bending diameter is one-third smaller than the conventional cross-linked polyethylene pipe, so it is suitable for bathroom washrooms, small rooms such as toilets, and rooms with complicated shapes. Can also be easily constructed.

In addition, since this piping material has excellent flexibility, it is remarkably excellent in workability, and when piping for floor heating, the number of construction steps is one-third that of cross-linked polyethylene pipes, and when compared to steel pipes. It is only one-eighth, and construction costs can be greatly saved.

Silicone rubber has excellent heat resistance, cold resistance, weather resistance,
It has excellent properties such as oil resistance, releasability, thermal conductivity, electrical properties, compression set properties, impact resilience, and safety. For pipes, extruded products with hardness 50-70 are used,
Operating temperature range is -55 ℃ to 250 ℃, tensile strength 55 ~ 65kgf / c
m ^2, the strength tearability elongation 280 to 350% JISA die of 15 to 19
It has the characteristic of kgf / cm. Silicone rubber tube also
It can be used in the same way as EPT rubber tubes.

Since all piping is seamless, the piping work is done, so there is no water leakage problem due to peeling of the seam.

In the case of a building whose main structure is a steel frame, the floor structure is generally constructed by laying a steel plate deck plate on the beam, placing reinforcing bars and placing concrete, and constructing the floor. However, by arranging a heating pipe inside this floor and using the structural floor as it is as a heat storage layer for floor heating,
There is no need to provide a separate heat storage layer.

〔Example〕

1 to 2 are sectional views of the floor of the embodiment of the present invention. FIG. 1 shows a floor structure of a building having a steel frame structure, on which a reinforcing bar 5 and a reinforcing bar wire mesh 4 are arranged on a deck plate 6 having a fireproof material spraying 7 and a spray foam insulation 8 on its lower surface. Further, the piping material 3 according to the present invention is arranged, and the concrete 2 is cast to construct a structural floor also serving as a heat storage layer. As the piping material 3, an EPT rubber tube having an inner diameter of about 15 mmφ was used. The piping material 3 is arranged by folding its plane figure in a spiral shape as schematically shown in FIG. By arranging in this way, one seamless flexible tube can be placed on the floor very easily, and 90 degree bending or arc bending can be dealt with with almost no 180 degree fold bending. be able to. This arrangement requires almost no work such as dimensioning, cutting, and connecting pipes. The piping members 3 can be arranged in any shape, and can be arranged in the most suitable design for any planar shape, as schematically shown in FIG. 3 (b). It is easy to arrange the hot water inlet 9 and the hot water outlet 10 close to each other.

The EPT rubber tube with an inner diameter of 15 mmφ has a minimum curvature diameter of 2
Easy to bend up to 0 cm. Further, the thermal expansion is absorbed by the volume of the pipe in the concrete, and there is no problem.

The embodiment is inexpensive and easy to construct, and is well received as an excellent floor heating system.

〔The invention's effect〕

ADVANTAGE OF THE INVENTION According to this invention, floor heating piping can be extremely easily and inexpensively constructed reasonably, and the outstanding characteristic of floor heating can be exhibited.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the concrete floorboard constructed by the method of the present invention, and FIG. 2 is a piping plan view showing an example of spiral piping. 1 …… Floor finishing material 2 …… Concrete 3 …… Piping material 4 …… Reinforcing wire mesh 5 …… Reinforcing bar 6 …… Deck plate 7 …… Refractory spraying 8 …… Spraying foam insulation 9 …… Inlet 10… …Exit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-48426 (JP, A) Actually opened 61-115315 (JP, U) Actually opened 49-9774 (JP, U) JP-B 51- 2742 (JP, B2) Actual public 5-5446 (JP, Y1) Actual public 14-6935 (JP, Y1)

Claims (1)

(57) [Claims] 1. A floor slab rebar is disposed on a deck plate under construction at a construction site, and the ratio of ethylene to propylene is 50/50 to 70/30, and the minimum curvature is 15 mm at the inner diameter on the rebar. A soft and flexible hot water piping material made of EPT rubber tube that can be up to 20 cm in diameter is arranged in a spiral shape in a seamless manner, and then concrete is placed on the deck plate so that the hot water piping material is built in. A construction method of heat storage type floor heating by low temperature hot water of a steel structure structure, which comprises constructing a floor slab and forming a heat storage layer consisting of a concrete floor slab with a built-in hot water pipe.