JPH0994305A - Fire fighting sprinkler piping - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily execute fire fighting sprinkler piping by providing a recessed piping route extended to a sprinkler head attaching position beforehand on the outer surface of a slab for partitioning the levels of the building of a direct ceiling structure and disposing the sprinkler piping inside the recessed part. SOLUTION: Respective floors are partitioned by a concrete slab 11 in the building 10 and a ceiling board 14 is directly attached to the lower surface of the slab 11. The recessed parts 12a and 12b... are formed on the lower surface side of such a slab 11. The part 12a among the recessed parts is turned to the part for housing a header 3, the recessed parts 12b... are turned to the parts for housing the sprinkler piping and the respective recessed parts 12a and 12b... are extended to the sprinkler head attaching positions of respective rooms. Then, the header 3 connected through a control valve 2 to the piping branched from a water supply main pipe 1 is housed in the recessed part 12a and the sprinkler pipings 4a-4d housed inside the recessed parts 12b are connected to the branching connection ports 3a-3d of the header 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing sprinkler pipe provided in a commercial building such as a house (individual, collective), office or store.

[0002]

2. Description of the Related Art Conventionally, a fire extinguishing sprinkler pipe installed in a building such as a building sends water from a lower water tank 57 to a water supply main 50 by a pump 56 as shown in FIG. A branch pipe 52 is branched for each layer via a control valve 51, a branch pipe 53 is further branched from the branch pipe 52, and finally a roll-out pipe 54 is taken out from the branch pipe 53 and a sprinkler head 55 is arranged at a predetermined position. Was to do.

Further, in order to improve the workability of piping, FIG.
As shown in FIG. 4, a multi-way fitting 61 is connected to the falling pipe 58 branched from the branch pipe 53, and a flexible pipe 60 such as a stainless bellows pipe or a soft copper pipe is connected between the multi-way joint 61 and the sprinkler head mounting pipe 62. Improvements have been made to connect with.

On the other hand, recently, apartment houses and the like also tend to be equipped with fire-extinguishing sprinklers.
Since the ceilings of conventional apartment houses and commercial buildings have a double-ceiling structure, there is a space below the so-called slab such as concrete or mortar that separates the floors, and a ceiling plate is provided below it. In other words, because of this space above the ceiling, the sprinkler piping as shown in FIGS. 3 and 4 can be constructed.

[0005]

However, there is a possibility that a structure in which the thickness of a concrete slab is increased and a ceiling plate is directly attached to this slab (hereinafter referred to as a straight ceiling structure) will be adopted in the future. However, in the case of such a straight ceiling structure with no space behind the ceiling, there is a problem that the above-mentioned fire extinguishing sprinkler pipe cannot be constructed (it does not look good and is not realistic even if constructed).

An object of the present invention is to solve the above problems and to provide a fire extinguishing sprinkler pipe suitable for a straight ceiling structure.

[0007]

DISCLOSURE OF THE INVENTION The present invention is a fire extinguishing sprinkler pipe having a direct ceiling structure in which a space is not provided between a slab partitioning a floor of a building and a ceiling plate in a room, and the sprinkler is preliminarily formed on the outer surface of the slab. A fire extinguishing sprinkler pipe in which a concave pipe path extending to a head mounting position is provided and a sprinkler pipe is formed in the concave portion.

Further, the present invention is a fire extinguishing sprinkler pipe having a direct ceiling structure in which a space is not provided between a slab partitioning a floor of a building and a ceiling plate in a room, the sprinkler head extending in advance into the slab. A fire extinguishing sprinkler pipe formed by embedding a sheath pipe forming a tubular pipe path and inserting a sprinkler pipe made of a flexible pipe into the sheath.

[0009]

[Function] Since the recess through which the sprinkler pipe passes is formed beforehand in the concrete slab or the sheath pipe is buried, the flexible pipe can be accommodated in this recess without the space above the ceiling. Sprinkler piping can be installed by inserting it into the pipe. In addition, the piping path from the header to the sprinkler head mounting position in each room is formed by the above-mentioned recesses and pods in advance,
Since a flexible pipe is provided along this line, the burden of connection work is reduced and the entire construction is facilitated.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partial sectional view of a building showing an embodiment in which a fire extinguishing sprinkler pipe of the present invention is installed. A in the figure
And B are ceiling parts that partition the floors of the building, and show different embodiments for the A floor and the B floor, respectively. In addition, an XX cross section and a YY cross section are respectively added and illustrated. FIG. 2 is a perspective view of a building showing a piping path.

The building 10 is, for example, an apartment house, and each floor is partitioned by a concrete slab 11. Since the ceiling plate 14 is directly attached to the lower surface of the concrete slab 11, there is no conventional space above the ceiling. For that reason,
The concrete slab shown on the A floor has a recess 12 on its lower surface.
a, 12b ... Are formed. The portion 12a of the recess is a portion for accommodating the header 3, while the portions 12b, 12c, 12d, etc. are portions for accommodating the sprinkler pipes. Also concave
As shown in FIG. 2, 12b, 12c, 12d and the like are piping paths extending to the sprinkler head mounting positions in each room, which are appropriately set in advance depending on the room position, the sprinkler head mounting positions and the number of sprinkler heads. It is desirable to keep it.

A pipe branched from the main water supply pipe 1 is introduced into the recess 12a through a control valve 2 and a header 3 is piped. The header 3 has branch connection ports 3a, 3b, 3
c, 3d, and sprinkler pipes 4a, 4b, 4c, 4d are connected to these connection ports via joints, respectively. Here, sprinkler piping 4a, 4
Although b, 4c and 4d may be conventional steel pipes, metal flexible pipes such as stainless steel bellows pipes and soft copper pipes and resin flexible pipes such as polyethylene pipes and polybutene pipes can be used. Sprinkler piping 4a,
4b, 4c, 4d are housed in the recess 12b and then the recess
It branches to each room in 12c and is led to the sprinkler head 6. On the other hand, the sprinkler pipe 4d is housed in the recess 12d from the header 3 and guided to the room on this side, and the sprinkler head 6 is connected to the end. In addition, in FIG. 2, one sprinkler head 6 is provided in each room.
Although individual pieces are provided, a multi-port joint may be attached to the end as shown by a part of a dotted line, and a flexible pipe may be radially branched from this to provide a plurality of sprinkler heads.

Next, another embodiment of the sprinkler piping shown on the B floor of FIG. 1 will be described. This example is a concrete slab
A recess 12 is provided in 11 and a tubular pipe path is formed following this, and a pipe 13, which is a so-called sheath pipe, is embedded in a concrete slab. The path by the sheath tube 13 is similar to that of the above-described embodiment, and the sheath tube 13b,
It is provided as 13c, 13d, etc., and can be connected to the sprinkler head 6 in each room. On the other hand, since the sprinkler pipe needs to be inserted through the sheath 13, the flexible pipe 5 is used. This may be made of metal or resin, but in this example, since the sheath pipe is embedded in the concrete slab, it has a fire resistant structure and a flexible pipe made of resin can be easily used. The header 3 is housed in the recess 12, and the flexible pipes 5a, 5b, 5c and 5d are connected to the connection ports 3a, 3b, 3c and 3d of the header 3, respectively, and the flexible pipe 5d is inside the sheath 13d. The flexible tubes 5a, 5b, 5c are inserted into the sheath tubes 13b, 13c and branched into each room.

The sprinkler pipes shown on the A and B floors are connected to the pipe branched from the water supply main pipe 1 via the control valve 2 and the header 3, and the sprinkler head is connected to the sprinkler head by a flexible pipe. Compact and simple sprinkler piping that does not require it. Moreover, if a recess or a sheath for accommodating the flexible pipe is provided on the slab side in advance along the pipe path, no space above the ceiling is required at all. In addition, although the example of the sprinkler piping shown on the A floor and the B floor is different types, it goes without saying that the same type of sprinkler piping is actually installed in one building.

[0015]

As described above, according to the present invention, the fire extinguishing sprinkler pipe can be easily installed even in the case of a straight ceiling structure without a space above the ceiling. Further, since the flexible pipe from the header to the sprinkler head is simply laid along the pipe path and both ends are connected, the joint connection work is reduced and the overall pipe construction is simplified.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a building in which a fire-extinguishing sprinkler pipe of the present invention is installed, wherein parts A and B show different embodiments.

FIG. 2 is a perspective view of a building showing an example in which a fire extinguishing sprinkler pipe of the present invention is installed.

FIG. 3 is a perspective view showing an example of a fire extinguishing sprinkler pipe using a flexible pipe.

FIG. 4 is a schematic diagram showing an outline of a conventional fire extinguishing sprinkler pipe.

[Explanation of symbols]

1 ... Main water supply pipe 2 ... Control valve 3 ... Header 4, 4a, 4b, 4c, 4d ... Sprinkler piping (flexible pipe) 5, 5a, 5b, 5c, 5d ... Flexible pipe 6 ... Sprinkler head 10 ... Building 11 ... Concrete slab 12, 12a, 12b, 12c, 12d ... Recesses 13, 13a, 13b, 13c, 13d ... Sheath tube

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuma Onda 2 Daifuku, Kuwana City, Mie Prefecture Hitachi Metals Co., Ltd. Kuwana Factory

Claims (4)

[Claims] 1. A fire extinguishing sprinkler pipe having a direct ceiling structure in which a space is not provided between a slab partitioning a floor of a building and a ceiling plate in a room, the concave pipe extending to a sprinkler head mounting position in advance on an outer surface of the slab. A fire extinguishing sprinkler pipe, characterized in that a passage is provided and a sprinkler pipe is formed in this recess. 2. The fire extinguishing sprinkler pipe according to claim 1, wherein the sprinkler pipe is a flexible pipe. 3. A fire extinguishing sprinkler pipe having a direct ceiling structure in which a space is not provided between a slab partitioning a floor of a building and a ceiling plate in a room, the tubular pipe extending in advance into the sprinkler head mounting position in the slab. Fire extinguishing sprinkler piping, characterized in that a sheath pipe forming a path is buried and a sprinkler pipe made of a flexible pipe is inserted into the sheath pipe. 4. A header is provided in the recess of the slab,
The fire extinguishing sprinkler pipe according to claim 1, wherein the water supply pipe side is connected to one of the headers, and a plurality of sprinkler pipes are branched from each of the other connection ports.