Sprinkler piping structure and installation method

Abstract

To provide a sprinkler piping structure having a short total length of piping, being easy to install, and being capable of supplying a sufficient amount of water, and an installation method of the sprinkler piping structure.SOLUTION: A sprinkler piping structure is installed in a building being an apartment house including at least one dwelling unit having a plurality of habitable rooms and non-habitable rooms. The sprinkler piping structure has: a main pipe connected to a mother pipe introduced to one habitable room or non-habitable room of the dwelling, the main pipe having a diameter smaller than that of the mother pipe; and a plurality of branch pipes connected to the main pipe and having a diameter smaller than that of the main diameter. Both the main pipe and the branch pipes are formed of cross-linked polyethylene. The branch pipes and the main pipe can be rolled and wound up together, and can be delivered and spread at an installation place of the sprinkler piping structure. The main pipe forms a loop-shaped circulation path at the installation place. Each of the branch pipes has one end connected to a part of the main pipe, and the other end connected to a sprinkler head provided in any of the habitable rooms or non-habitable rooms.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a sprinkler piping structure and an installation method thereof.

Background Art

[0002] In buildings such as apartment houses, sprinklers are installed in a plurality of rooms etc. on one floor. A sprinkler piping structure is provided to supply water to sprinkler heads respectively arranged on the ceilings of the plurality of rooms etc. Specifically, as schematically shown in FIG. 6, a header 20 is connected to a main pipe 1 drawn into a part of the ceiling space. A plurality of branch pipes 3 each extending to a sprinkler head 4 arranged on the ceiling of each room etc. are connected to the header 20. In the configuration described in Patent Document 1, a loop-shaped header is provided, and a plurality of branch pipes are connected to the loop-shaped header. Usually, a header such as that described in Patent Document 1 is arranged in the ceiling space of wet areas (non-residential space areas etc. where water pipes are drawn and water is used) such as bathrooms and washrooms. And, branch pipes extend from the header arranged in the ceiling space of the wet area in various directions to supply water to the sprinkler heads on the ceilings of each room etc.

[0003] The water supply and drainage equipment described in Patent Document 2 has a main pipe connected to a meter box outside a dwelling unit of an apartment house, a main pipe connected to the meter box and extending into the dwelling unit, and branch pipes (branch pipes) branching from the main pipe and extending to wet areas. In this configuration, a plurality of branch pipes each extending to each water supply faucet provided in a plurality of wet areas (unit bathrooms, laundry rooms, toilets, sinks, washbasins, etc.) provided in the dwelling unit extend from the main pipe.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

[0005] In a configuration where multiple branch pipes are connected to a branching mechanism connected to a main pipe, the connection points between the main pipe and the branching mechanism, and between the branching mechanism and the branch pipes, are all located in the ceiling space of a bathroom or other wet area. Because the length of the branch pipes extending from the branching mechanism located in the bathroom or other wet area to each room is long, the total length of the piping in the entire sprinkler piping structure is long. As a result, the installation of the branch pipes is complicated and requires a long working time, which may lead to high costs. This problem is the same whether the branching mechanism is a box-shaped one as shown in Figure 6 or a loop-pipe-shaped branching mechanism as described in Patent Document 1.

[0006] The configuration described in Patent Document 2 is for water supply and drainage equipment, but in the case of a sprinkler piping structure, it is necessary to install sprinkler heads and connect the piping to living spaces and other areas other than the water supply areas where water taps are installed. Each sprinkler pipe needs to supply a sufficient amount of water to prevent fires at sprinkler heads installed in numerous locations, including living spaces and other areas other than the water supply areas. For this reason, the diameter of the main pipe and branch pipes of the sprinkler piping structure must be large, and this may be stipulated by ordinances or standards. Consequently, the configuration of Patent Document 2 concerning water supply and drainage equipment cannot be directly applied to a sprinkler piping structure.

[0007] Therefore, the object of the present invention is to solve the aforementioned conventional problems and provide a sprinkler piping structure and installation method that has a short total length of piping, is easy to install, and can supply a sufficient amount of water. [Means for solving the problem]

[0008] The sprinkler piping structure of the present invention, to be installed in a building which is an apartment building including at least one dwelling unit having multiple living rooms and non-living spaces, comprises a main pipe connected to a main pipe introduced into one of the living rooms or non-living spaces of the dwelling unit and having a smaller diameter than the main pipe, and a plurality of branch pipes connected to the main pipe and having a smaller diameter than the main pipe, wherein both the main pipe and the branch pipes are made of cross-linked polyethylene, the branch pipes and the main pipe can be rolled up together and wound, and the installation location of the sprinkler piping structure The above-ground space of the building Then extend and widen the main pipe and the branch pipe. in, The main pipe is located at the installation location The above ceiling space The system forms a loop-shaped circulation path, and each of the branch pipes is characterized in that one end is connected to a part of the main pipe and the other end is connected to a sprinkler head installed in either a living room or a non-living space. [Effects of the Invention]

[0009] According to the present invention, a sprinkler piping structure and installation method are provided that have a short total length of piping, are easy to install, and can supply a sufficient amount of water. [Brief explanation of the drawing]

[0010] [Figure 1] This is a schematic plan view showing the sprinkler piping structure of the first embodiment of the present invention. [Figure 2] Figure 1 is a perspective view showing the sprinkler piping structure before installation. [Figure 3] This is a schematic plan view showing a sprinkler piping structure according to a second embodiment of the present invention. [Figure 4] Figure 3 is a schematic plan view showing a modified example of the sprinkler piping structure. [Figure 5] This is a schematic plan view showing a sprinkler piping structure according to a third embodiment of the present invention. [Figure 6] This is a schematic plan view illustrating an example of a conventional sprinkler piping structure. [Modes for carrying out the invention]

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings. [First Embodiment] The sprinkler piping structure of the first embodiment of the present invention, schematically shown in Figure 1, is installed in an apartment building. The main pipe 2 is connected to a main pipe 1, which is introduced from outside the dwelling unit into one of the living rooms or non-living spaces on a floor, for example, the bathroom 10 of the dwelling unit, via a short connecting pipe 5. The living room or non-living space referred to here refers to each room 11-15, the entrance 16, the corridor 17, etc., within the dwelling unit. The main pipe 2 consists of a pair of thin pipes 2a, 2b that are substantially parallel to each other and extend along each other. The pair of thin pipes 2a, 2b are connected to each other to form a closed flow path. The connection point between the main pipe 1 and the connecting pipe 5 is located in the ceiling space of a water-related area such as the bathroom 10 within the dwelling unit, and the connection point between the connecting pipe 5 and the main pipe 2 is located in a position close to the connection point between the main pipe 1 and the connecting pipe 5, for example, in the ceiling space of the entrance 16. The main pipe 2 extends from the ceiling space of the entrance 16, where it connects to the connecting pipe 5, through the ceiling spaces of two or more living rooms or non-living spaces within the dwelling unit, such as the corridor 17, kitchen 11, living room 12, and bedroom 13. Branch pipes 3 are connected to the main pipe 2, which extends through two or more living rooms or non-living spaces, and each branch pipe extends to a sprinkler head 4 installed in one of the living rooms or non-living spaces (for example, bedroom 15, kitchen 11, living room 12, bedrooms 13, 14). That is, one end of the branch pipe 3 is connected to a part of the main pipe 2, and the other end is connected to a sprinkler head 4 in one of the living rooms or non-living spaces. If multiple sprinkler heads 4 are installed in each living room or non-living space, then in one living room or non-living space, there is a branch pipe 3 connected to each of the multiple sprinkler heads 4. The sprinkler head 4 is a cap member that closes the end of the branch pipe 3, and is formed from, for example, solder. When the temperature inside a living or non-living space rises due to flames or other causes, and the solder softens at least partially due to the heat, the sprinkler head 4 detaches from the end of the branch pipe 3. Water stored in the main pipe 1, connecting pipe 5, main pipe 2, and branch pipe 3 is discharged from the end of the branch pipe 3 that has been opened by the detachment of the sprinkler head 4, thereby providing a fire extinguishing effect.

[0012] In this embodiment, a main pipe 2, consisting of a pair of narrow tubes 2a and 2b extending across multiple living or non-living spaces, has multiple branch pipes 3 extending from it. Each of these branch pipes 3 is connected to the main pipe 2 inside or near the living or non-living space where the sprinkler heads 4 are located. Therefore, the branch pipes 3 in this embodiment are shorter in length than, for example, the branch pipes in Patent Document 1. As a result, the total length of the entire sprinkler piping structure is significantly reduced. Consequently, the sprinkler piping structure of this embodiment requires less piping material (e.g., cross-linked polyethylene) and is easier to install compared to conventional sprinkler piping structures.

[0013] Furthermore, in a sprinkler piping structure, it is necessary to ensure a sufficient volume of water for each sprinkler head 4 to exert its fire-extinguishing effect, and for this reason, the inner diameter of the main pipe cannot be made too small. However, in this embodiment, the main pipe 2 is composed of a pair of thin tubes 2a and 2b that are substantially parallel to each other and extend along each other. Therefore, even if the inner diameter of each thin tube 2a and 2b is relatively small, a sufficient volume of water can be ensured at each sprinkler head 4. By composing the main pipe 2 with a pair of small-diameter thin tubes 2a and 2b in this way, the handling and installation of the piping becomes easier. As an example, in this embodiment, the inner diameter of the main pipe 1 is 50A, the inner diameter of the connecting pipe 5 is 32A, the inner diameter of the thin tubes 2a and 2b constituting the main pipe 2 is 20A, and the inner diameter of the branch pipe is 16A. In this specification, the size of each pipe is expressed in nominal diameter in accordance with JIS K 6769. This nominal diameter may be, for example, related to XM or XE type cross-linked polyethylene pipes.

[0014] If the main pipe has a large diameter (for example, an inner diameter of 32A), it is difficult to roll it up and wind it up. Therefore, it is difficult to handle the main pipe in a compact roll when transporting it to the installation site of the sprinkler piping system.

[0015] In contrast, in the present embodiment, as schematically shown in FIG. 2, thin tubes 2a and 2b with a small diameter (for example, an inner diameter of 20A) can be wound up by being small and rounded. Moreover, each branch pipe 3 that is even thinner (for example, an inner diameter of 16A) is already connected to various locations of a pair of thin tubes 2a and 2b via a joint 6, and the thin tubes 2a and 2b and the branch pipes 3 can be wound up together and made into one roll body. The roll body formed by winding up the thin tubes 2a and 2b and the branch pipes 3 can be easily transported to the installation location (the ceiling space of a building). At the installation location, the connection work between the main pipe 2 and the branch pipe 3 is not necessary. It is only necessary to unwind and spread out the thin tubes 2a and 2b and the branch pipes 3 from the roll body that has been wound up. The spread thin tubes 2a and 2b extend through the ceiling spaces of two or more living rooms or non-living room spaces, for example, a corridor 17, a kitchen 11, a living room 12, and a bedroom 13. Then, a part of the thin tubes 2a and 2b is connected to the main pipe 1 via a connecting pipe 5, and each branch pipe 3 is connected to each sprinkler head 4. Then, if the thin tubes 2a and 2b and each branch pipe 3 are fixed to appropriate positions in the ceiling space using, for example, an adhesive tape or a fixing fitting, etc., the sprinkler pipe structure is completed. Thus, since the work of connecting the thin tubes 2a and 2b and the branch pipes 3 in the ceiling space of each living room or non-living room space is not necessary, the installation work of the sprinkler pipe structure is easy. In particular, since the work performed at the installation location does not require much specialized knowledge or skills, the sprinkler pipe structure can be easily installed without requiring proficiency, and the work efficiency is improved. In particular, since the length of the branch pipe 3 with a small diameter is shorter than before, the pressure loss is reduced, so the water pressure when the sprinkler head 4 comes off and water is discharged from the end of the branch pipe 3 becomes higher, and the fire extinguishing effect can be improved.

[0016] [Second Embodiment] Next, the sprinkler pipe structure according to the second embodiment of the present invention will be described with reference to FIGS. 3 to 4. Mainly, the differences from the first embodiment of the present embodiment will be described, and the description of the same parts as those in the first embodiment will be omitted.

[0017] As shown in Figure 3, the sprinkler piping structure of this embodiment has a main pipe 7 connected to a main pipe 1 introduced into one living room or non-living space (e.g., bathroom 10) on the floor via a short connecting pipe 5. The main pipe 7 is a loop-shaped circulation path that extends across two or more living rooms or non-living spaces. The connection point between the main pipe 1 and the connecting pipe 5 is located in the ceiling of a water-related area such as the bathroom 10 within the dwelling unit, while the connection point between the connecting pipe 5 and the main pipe 7 is located in a position close to the connection point between the main pipe 1 and the connecting pipe 5, for example, in the ceiling space of the entrance hall 16. The main pipe 7 extends from the ceiling space of the entrance hall 16, where it connects to the connecting pipe 5, through the ceiling spaces of multiple living rooms or non-living spaces within the dwelling unit, such as the corridor 17, kitchen 11, living room 12, and bedrooms 13, 14, and 15. Branch pipes 3 are connected to this main pipe 7, extending to sprinkler heads 4 installed in multiple living rooms or non-living spaces (for example, kitchen 11, living room 12, bedrooms 13, 14, 15).

[0018] Also in this embodiment, similar to the first embodiment, the length of the branch pipe 3 is short, and the total length of the entire sprinkler piping structure is significantly shortened. Therefore, less piping material is required, cost reduction is possible, and installation work becomes easier. Further, since the main pipe 7 is a loop-shaped circulation path that extends across two or more living rooms or non-living room spaces, sufficient water volume can be ensured at each sprinkler head 4 even if the inner diameter is somewhat small. As an example, the inner diameter of the main pipe 1 is 50A, the inner diameter of the connecting pipe 5 is 32A, the inner diameter of the main pipe 7 is 20A, and the inner diameter of the branch pipe is 16A. Also in this embodiment, in substantially the same configuration as shown in FIG. 2, with each branch pipe 3 connected to various locations of the main pipe 7 via the joint 6, the main pipe 7 and the branch pipes 3 can be collectively rounded and wound up to form a roll body. Thereby, the roll body formed by winding up the main pipe 7 and the branch pipes 3 can be easily carried to the installation location (ceiling space of the building), and the main pipe 7 and the branch pipes 3 are extended by unwinding them from the roll body at the installation location. The unfolded main pipe 7 extends across the ceiling spaces of two or more living rooms or non-living room spaces, for example, the entrance 16, corridor 17, kitchen 11, living room 12, and bedrooms 13 to 15. A part of the main pipe 7 is connected to the main pipe 1 via the connecting pipe 5, each branch pipe 3 is connected to each sprinkler head 4, and the main pipe 7 and each branch pipe 3 are fixed at appropriate positions in the ceiling space respectively to complete the sprinkler piping structure. Also in this embodiment, the installation work of the sprinkler piping structure is easy, work efficiency is improved, and the fire extinguishing effect can be enhanced.

[0019] FIG. 4 shows a modified example of the sprinkler piping structure of this embodiment. The main pipe 8 of this modified example is a loop-shaped circulation path that extends across two or more living rooms or non-living room spaces (for example, the entrance 16 and the corridor 17), but it is a smaller loop-shaped compared to the configuration shown in FIG. 3. Also in this modified example, compared to the conventional example shown in FIG. 6, the length of the branch pipe 3 is short, and the total length of the entire sprinkler piping structure can be shortened. Therefore, substantially the same effect as the configuration shown in FIG. 3 can be obtained.

[0020] [Third Embodiment] Next, the sprinkler piping structure of the third embodiment of the present invention will be described with reference to Figure 5. The differences between this embodiment and the first and second embodiments will be described primarily, while parts similar to those of the first and second embodiments will not be explained.

[0021] In this embodiment, the sprinkler piping structure has a main pipe 9 directly connected to a main pipe 1 introduced into one living room or non-living space (e.g., bathroom 10) on the floor, and the main pipe 9 extends through two or more living rooms or non-living spaces. The connection point between the main pipe 1 and the main pipe 9 is located in the ceiling space of a water-related area such as the bathroom 10 within the dwelling unit, and the main pipe 9 extends from the ceiling space of the water-related area such as the bathroom 10 through the ceiling spaces of two or more living rooms or non-living spaces within the dwelling unit, such as the corridor 17, kitchen 11, living room 12, and bedroom 13. Branch pipes 3 are connected to this main pipe 9, extending to sprinkler heads 4 provided in each of the living rooms or non-living spaces (e.g., kitchen 11, living room 12, bedrooms 13-15).

[0022] In this embodiment, as in the first and second embodiments, the length of the branch pipes 3 is short, and the total length of the sprinkler piping structure is shortened, resulting in less piping material, lower costs, and easier installation. For example, the inner diameter of the main pipe 1 is 50A, the inner diameter of the main pipe 9 is 20A, and the inner diameter of the branch pipes 3 is 16A. In this embodiment, as in substantially the same configuration as shown in Figure 2, each branch pipe 3 is connected to various points on the main pipe 9 via the joints 6, and the main pipe 9 and branch pipes 3 can be rolled up together to form a roll. This roll can be easily transported to the installation site (the space above the ceiling of the building), and the main pipe 9 and branch pipes 3 can be unrolled and extended at the installation site. The main pipe 9 is extended to pass through the space above the ceilings of two or more living or non-living spaces, such as the entrance hall 16, corridor 17, kitchen 11, living room 12, and bedroom 13. A portion of the main pipe 9 is connected to the base pipe 1, each branch pipe 3 is connected to each sprinkler head 4, and the main pipe 9 and each branch pipe 3 are fixed in appropriate positions in the ceiling space to complete the sprinkler piping structure. In this embodiment as well, the installation work of the sprinkler piping structure is easy, improving work efficiency and enhancing fire extinguishing capabilities. [Explanation of symbols]

[0023] 1 main pipe 2,7,8,9 Master 2a,2b tubule 3 branch pipes 4 sprinkler heads 5 connecting pipes 6 joints 10 Bathroom 11 Kitchen 12 Living Room 13, 14, 15 Bedroom 16 Entrance 17 Corridor

Claims

1. A sprinkler piping structure installed in a building that is a multi-unit residential building including at least one dwelling unit having multiple living rooms and non-living spaces, It has a main pipe connected to a main pipe introduced into one of the living rooms or non-living spaces of the dwelling unit, and having a smaller diameter than the main pipe, and a plurality of branch pipes connected to the main pipe, each having a smaller diameter than the main pipe, Both the main pipe and the branch pipe are made of cross-linked polyethylene, and the branch pipe and the main pipe can be rolled up together and wound up, and by unwinding and spreading out the main pipe and the branch pipe in the ceiling space of the building where the sprinkler piping structure is installed, the main pipe forms a loop-shaped circulation path in the ceiling space where it is installed. A sprinkler piping structure characterized in that each of the branch pipes has one end connected to a part of the main pipe and the other end connected to a sprinkler head installed in any of the living rooms or non-living spaces.

2. The sprinkler piping structure according to claim 1, wherein the main pipe consists of a pair of thin tubes extending along each other.

3. The sprinkler piping structure according to claim 1 or 2, wherein the inner diameter of the main pipe is 20A and the inner diameter of the branch pipe is 16A.

4. The sprinkler piping structure according to any one of claims 1 to 3, wherein the main pipe is connected to the mother pipe via a connecting pipe, and the connecting pipe has a smaller diameter than the mother pipe and a larger diameter than the main pipe.

5. A method for installing a sprinkler piping structure according to any one of claims 1 to 4 in a building which is a multi-unit residential building including at least one dwelling unit having multiple living rooms and non-living spaces, A main pipe, which has a smaller diameter than the main pipe introduced into one of the rooms or non-room spaces of the dwelling unit, is connected to a main pipe, to which multiple branch pipes, each with a smaller diameter than the main pipe, are connected, and the main pipe is rolled up together with the branch pipes to form a single roll. The rolled-up body, in which the main pipe and the branch pipes are rolled up, is transported to the ceiling space, which is the installation location. In the aforementioned installation location, the main pipe and the branch pipe are unrolled and spread out from the roll body, and the main pipe forms a loop-shaped circulation path. A method for installing a sprinkler piping structure, characterized by connecting the main pipe to the parent pipe and connecting each of the branch pipes to a sprinkler head installed in the living room or non-living space.

6. A method for installing a sprinkler piping structure according to claim 5, wherein the main pipe is connected to the mother pipe via a connecting pipe.

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