JP2003144574A - Piping system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a piping system to which a sprinkler nozzle is easily attached by using a piping path employed for a water section equipment in a house or the like. SOLUTION: In the piping system, a branch joint part is provided for detachably attaching the sprinkler nozzle to the piping path to the water section equipment. A joint part is connected to the piping. This joint part is fitted and connected to the branch joint part. A slip preventing fitting is attached to a fitting part so that the piping does not slip in the fitting direction from the branch joint part under water pressure. Thus, piping for a sprinkler does not need to be separately provided, so that a construction load and a cost can be reduced and the branch joint part can be easily interposed in the piping path. Further, the sprinkler nozzle is detachable for maintenance and inspection.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a piping system. Specifically, it relates to a piping system to which a fire extinguishing sprinkler can be attached.

[0002]

2. Description of the Related Art In a conventional piping system, there is a sprinkler facility for extinguishing a fire by operating a sprinkler for extinguishing it when a fire occurs in a house or the like.

[0003]

However, in the conventional piping system, since the piping for the water supply equipment is provided in a different piping route, the cost is increased accordingly. Further, since the branch joint is screwed into the pipe for connection, it takes a long time to perform the connecting work. Further, although the fire detection sensor can be inspected, the nozzle of the sprinkler is not easily inspected. That is,
If you want to inspect the nozzle, you have to remove the nozzle by closing the water shutoff valve installed outdoors on the water supply pipe. Therefore, it cannot be inspected only at the installation location of the sprinkler. In addition, since the water shutoff valve is closed to shut off the water of the entire house, it is impossible to supply water to other water supply equipment while the inspection is being performed.

Therefore, in order to solve the above-mentioned problems, it is an object of the present invention to provide a piping system in which a sprinkler nozzle can be easily mounted by utilizing a piping path used for a water circulating device in a house or the like. It is another object of the present invention to provide a piping system that allows the nozzle to be easily removed and inspected. Furthermore, it aims at providing the piping system which is hard to freeze.

[0005]

Means for Solving the Problems and Actions / Effects In order to solve the above problems, the first aspect of the present invention is to provide a branch joint portion for detachably connecting a sprinkler nozzle in a pipe path to a water-surrounding device. Is provided, and the joint portion is connected to the pipe, and the joint portion and the branch joint portion are fitted and connected, and
A piping system was equipped with a slip-prevention metal fitting on the fitting part so that the pipe does not come off from the branch joint part in the fitting direction due to water pressure.

As a result, it is not necessary to separately lay a sprinkler pipe, the construction load and cost can be reduced, and the branch joint portion can be easily interposed in the pipe path. In addition, the sprinkler nozzle can be removed to facilitate repair and inspection. In addition, the water that stagnates in the piping path can be caused to flow through the water-circulating equipment to flow the water. Since this allows water to flow in daily living activities, the risk of freezing the water in the piping path can be greatly reduced, especially in cold regions. Furthermore, if the pipe is laid on the ceiling or behind the wall and a branch joint is provided in this pipe path,
The water in the piping route is less likely to freeze than when it is laid in the soil below the first floor.

According to a second aspect of the present invention, a check valve is provided at a branch portion of the branch joint portion which connects the sprinkler nozzles to prevent backflow from the sprinkler nozzle side. The described piping system was used.

As a result, even if stagnant water collects between the branch portion of the branch joint portion and the sprinkler nozzle, the stagnant water will not flow into the water circulating device side by the check valve. This configuration has a great effect particularly when the branch joint portion is installed in the pipe path of the water circulation device (washbasin, kitchen, etc.) that may be used as drinking water.

A third aspect of the present invention is the piping system according to the first or second aspect, wherein the branch joint portion is provided with a water stopcock.

Thus, at the location where the nozzle is installed, water can be stopped only in the piping path of the nozzle to be inspected, and the nozzle can be easily inspected.

According to a fourth aspect of the present invention, the branch joint portion is
A water shut-off valve is provided inside, and the water shut-off valve is opened by attaching the sprinkler nozzle to the branch joint portion, and the shut-off valve is closed by removing the sprinkler nozzle from the branch joint portion. Claim 1
The piping system according to any one of 1 to 3.

As a result, the water flow state can be achieved simply by attaching the sprinkler nozzle. Therefore, there is no risk of human error such as forgetting to open the water shutoff valve. In addition, the sprinkler nozzle can be easily removed without closing the water supply to other water supply equipment.

According to a fifth aspect of the present invention, the branch joint portion is
The pipe system according to any one of claims 1 to 4, wherein the pipe system is connected to the pipe in the casing.

As a result, before forming the ceiling or the wall surface,
By installing the casing, the branch joint part can be connected later. Therefore, it is possible to avoid the construction work. Also, repair and inspection become easy. further,
It is advisable to attach a detachable lid to the casing so that the lid can be detached from the indoor side. With such a configuration, repair / inspection of the connection between the pipe and the branch joint can be facilitated from the indoor side. Further, if the lid attached to the casing is flush with the ceiling surface, the appearance can be improved. In addition, by providing the water leakage detecting means in the casing, it is possible to detect the connection failure between the branch joint portion and the pipe earlier.

According to a sixth aspect of the present invention, a header is connected to the water supply pipe, a plurality of pipes are branched from the header, and the branch joint portion is provided in at least one path of the plurality of pipes. The piping system according to any one of claims 1 to 5, wherein:

[0016] With this, it is possible to easily perform the laying work of the pipe. Furthermore, an on-off valve (solenoid valve) is provided at the branch between the header and each pipe, and when water is sprayed from a predetermined sprinkler nozzle, the on-off valve of the pipe route other than that of the sprinkler nozzle should be closed. It is preferable to control When the water is discharged from the sprinkler nozzle, the opening / closing valve at the branch portion is controlled to be open. The reason for controlling in this way is to ensure that sufficient water can be discharged from the sprinkler nozzle, assuming that a fire has occurred in one room and then in another room. In order to recognize that the water is being discharged from the sprinkler nozzle, the open / closed state of the open / close valve in the sprinkler nozzle may be detected.

According to claim 7 of the present invention, the water supply pipe is branched, and a header is connected to one of the pipes branched from the water supply pipe, and a plurality of pipes are branched from this header. The piping system according to any one of claims 1 to 5, wherein the branch joint is attached to the other branched pipe.

As a result, by branching on the upstream side of the pipe, it becomes possible to secure a sufficient amount of water supply to the sprinkler. Further, it is preferable that an on-off valve (electromagnetic valve) is provided in the pipe connecting the header and the water shutoff valve is closed when water is discharged from the sprinkler nozzle. With such a configuration, a sufficient flow rate to the sprinkler nozzle can be secured.

According to an eighth aspect of the present invention, there is provided a piping system according to the sixth or seventh aspect, wherein a foreign matter removing filter is provided in the water supply pipe path.

As a result, it is possible to prevent foreign matter from entering the sprinkler nozzle and clogging the nozzle.
Further, since the filter is provided upstream of the water supply pipe, it is not necessary to provide a filter for each sprinkler nozzle, and it can be said that the filter can be easily cleaned.

According to a ninth aspect of the present invention, the water circulation device is
The piping system according to any one of claims 1 to 8, which is a toilet bowl.

Since the toilet bowl is always used after a predetermined time, it can be said that the water in the piping path can be made to flow before the water freezes. In other words, this can greatly reduce the risk of freezing the water in the piping path even in cold regions, and the sprinkler nozzle can always maintain the water flow state.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a piping system which is an embodiment of the present invention. This piping system 1
Uses a header construction method, and a flexible resin pipe 7 is branched from the header 3 installed under the floor to lay each water circulation device 4, 4A. Then, the pipe 7 from the header 3 is erected up through the back of the wall, laid on the ceiling, and connected to the toilet device 4A, a water supply device 4 such as a water tap for a washing machine. Further, a branch joint portion 9 is provided in the pipe 7 route laid on the ceiling. A sprinkler nozzle (not shown) is provided in the branch joint portion 9. In the figure,
Although the case where the branch joint portion is provided on the ceiling is shown, it may be provided on the back side of the wall. When it is provided on the back of the wall, it is preferably provided on the ceiling side at a position close to the ceiling.

Next, FIG. 2 shows a case where the header 3 is installed on the ceiling. Similar to FIG. 1, a branch joint portion 9 is provided in the path of the pipe 7 branched from the header 3, and a sprinkler nozzle (not shown) is provided in the branch joint portion 9.

FIG. 3 shows a case where the header 3 is installed on the ceiling and the pipe 7 branched from the header 3 is laid on the water supply equipment 4 on the first and second floors. A branch joint portion 9 is provided in the path of the pipe 7 so that a sprinkler nozzle (not shown) can be attached. FIG. 4 shows a piping path diagram when the branch joint portion 9 is provided in the piping 7 path branched from the header 3 as in FIGS. 1, 2 and 3.

Although the description has been given based on the example in which the branch joint portion 9 is provided in the path of the pipe 7 branched from the header 3, at least two water supply pipes 6 are branched and branched as shown in FIGS. 5 and 6. The header 3 may be connected to the one pipe 7 and the branch joint portion 9 may be attached to the other pipe 7 not connected to the header 3. Thereby, by branching on the upstream side of the water supply pipe 6, it becomes possible to secure a sufficient amount of water supply to the sprinkler nozzle 18.

Also in this case, the water circulation device 4 is connected to the end of the pipe 7 as described above. For example, as shown in the drawing, it may be connected to a toilet, a washing machine faucet, an outdoor faucet, or a faucet fitting in a bathroom. When used in a bathroom, a check valve 11 is provided in the branch joint part 9 to prevent stagnant water from flowing back. In the bathroom, use hot water directly on the body such as a shower. Therefore, it is desirable to prevent a decrease in the water supply amount due to the use of another water supply device 4. By separately branching from the original water supply pipe 6 as described above, it is possible to obtain an effect that a decrease in the amount of water supply can be suppressed more than when the pipe 3 is provided from the header 3.

Further, an opening / closing valve 26 (solenoid valve) is provided in the pipe 7 connecting the header 3, and when water is discharged from the sprinkler nozzle 18, the opening / closing valve 26 of the other pipe 7 path is closed. It is preferable to control so as to be in a state. With such a configuration, a sufficient flow rate to the sprinkler nozzle 18 can be secured.

Next, FIG. 7 shows a case where the header 3 is installed on the ceiling and the branch joint portion 9 is installed in the pipe 7 route from the header 3 to the toilet 4A. As shown in the figure,
Start up the main water supply pipe 5 outdoors. Then, the main water supply pipe 5 is taken into the water distribution board 2 attached to the wall surface (including the foundation portion) of the house. The water distribution board 2 is covered with a casing 29, and the water distribution board 2 can be inspected by opening and closing an inspection lid 24 provided on the casing 29.
As shown in FIG. 8, the water distribution board 2 is provided with a functional unit for managing the water supply pressure, the water supply amount, the water supply quality, etc. of the water supply from the main water supply pipe 5. Specifically, an on-off valve 26, a foreign matter removing filter 25, and a pressure reducing valve 27 are interposed in the main water supply pipe 5 and connected to the water supply pipe 6 and the pipe 7 into the house. A water supply pipe 6 for supplying water by directly piping from the water distribution board 2 to the house and a hot water supply pipe 6 for supplying water by interposing a water heater 28 and then supplying water to the house are provided.

The water supply pipe 6 and the hot water supply pipe 6 are laid through the back of the wall to the back of the ceiling and connected to the header 3 provided on the back of the ceiling. The plurality of pipes 7 branched from the header 3 may be flexible resin pipes 7, and may be inserted into the sheath pipe 8 to be laid. If the sheath pipe 8 is coated with a heat insulating material or a fireproof material, or if the sheath pipe 8 itself is formed of a heat insulating / fireproof material, the water in the pipe 7 is prevented from freezing. Also,
The hot water in the hot water supply pipe 6 is kept warm, which leads to immediate hot water. Furthermore, when a fire occurs, the sheath pipe 8 and the pipe 7 are burned, and there is no problem that water is not supplied to the sprinkler nozzle 18. In addition, although the case where the header 3 is provided on the back of the ceiling has been described here, the header 3 may be provided under the floor as shown in FIG. Further, the header 3 may be provided on the back of the wall.

The pipe 7 branched from the header 3
Is laid up to each water circulation device 4. This water equipment 4
A branch joint portion 9 that detachably connects the sprinkler nozzle 18 is provided in at least one path of the pipe 7 to the. In FIG. 7, the water supply equipment 4 is a toilet bowl 4A, and a branch joint section 9 is provided in the path of a pipe 7 connected to the toilet bowl 4A. Further, the water supply to the toilet bowl 4A (and the local cleaning device) is performed by the pipe 7 connected to the coupling portion 14.
Do more. The coupling portion 14 connects a water shutoff valve (not shown) and two coupling portions 14 to the pipe 7 laid from the branch joint portion 9 in the casing 29 buried in the wall, and further, this stop Water valve (not shown) operating handle 1
3 and the coupling portion 14 are exposed indoors and outdoors.

Next, a method of interposing the branch joint portion 9 in the path of the pipe 7 will be described with reference to FIGS. 9 to 14. As shown in each figure, the joint portion 10 is connected to the pipe 7. The joint portion 10 and the branch joint portion 9 are fitted and connected, and water pressure is applied to the pipe portion 7 from the branch joint portion 9 in the fitting direction.
Attach the metal fitting 22 to the fitting part so that it will not come off. As a specific configuration, the joint portion 10 is provided with two O-rings 21 on the outer circumference, and is inserted into the end portion of the branch joint portion 9 and fitted therein. Further, as shown in FIG. 14, a convex portion 30 is formed on the outer periphery of the joint portion 10 and the branch joint portion 9,
The detachment prevention metal fitting 22 is attached by sandwiching the convex portion 30, so that the pipe 7 does not come off from the branch joint portion 9 in the fitting direction due to water pressure.

Next, the branch joint portion 9 will be described. The branch joint part 9 has a substantially T-shaped three-forked shape having one inflow port and two outflow ports. And one outlet is
It is connected to a pipe 7 laid on the ceiling or behind the wall, and supplies water to the toilet device 4A, a water supply device 4 such as a kitchen.
The other outlet is from the ceiling or wall to the room side. The sprinkler nozzle 18 is connected to the end of the branch joint 9. In addition, this branch joint portion 9
May have a substantially Y shape as long as it has a three-pronged shape.

Sprinkler nozzle 1 of this branch joint 9
A check valve 11 is provided in the branch portion 20 connecting the eight. This means that if the path from the branching section 20 of the branch joint section 9 to the sprinkler nozzle 18 becomes longer, water will stagnate in the path, and this stagnant water will flow backward and flow to the water circulating device 4 side. It is for doing. In particular, when it is installed on the ceiling, the size of the space above the ceiling differs depending on the house or the like. Therefore, depending on the house, the pipe 7 may have to be interposed between the branch portion 20 and the sprinkler nozzle 18. Therefore, if stagnant water accumulates in the pipe 7 having this predetermined length and remains stagnant for a long time, the water may be spoiled. Therefore, the check valve 11 is provided at the branch portion 20 (particularly the root of the branch) of the branch joint portion 9.
Is provided to prevent stagnant water from flowing back.
In particular, the check valve 11 is provided at the branch portion 20 of the branch joint portion 9 provided in the path of the pipe 7 for beverage.

Further, the branch joint portion 9 is provided with a water shutoff valve 12 (including a water shutoff valve). The branch joint portion 9 of FIGS. 9 to 11 has a water shutoff valve 12 formed therein, and a sprinkler nozzle 18 is attached to the branch joint portion 9 to thereby cut off the water shutoff valve 12.
Is provided and an opening / closing means for closing the water shutoff valve 12 by removing the sprinkler nozzle 18 from the branch joint portion 9 is provided. Specifically, by inserting the connection end portion 19 of the sprinkler nozzle 18 into the branch portion 20 of the branch joint portion 9, the water shutoff valve 12 provided inside the branch portion 20 is pushed,
The water shutoff valve 12 is opened. 9 and 10, the coupling portion 14 is provided at the tip of the branch portion 20, and the ball 15 is held inside the coupling portion 14 in a convex state.
Fits into the groove of the connection end 19 of the sprinkler nozzle 18 to fix the sprinkler nozzle 18 to the branch joint 9. Thereby, the open state of the water shutoff valve 12 is maintained. When the sprinkler nozzle 18 is pulled out, the outer peripheral portion 16 of the coupling is slid to hold the ball 1 in a convex state inside the coupling portion 14.
Free 5 Then, when the sprinkler nozzle 18 is pulled out, the water shutoff valve 12 is returned to the original closed state by the urging means 17. The urging means 17 uses the elastic force of a spring. FIG. 11 shows a case where the sprinkler nozzle 18 and the branch joint portion 9 are screwed together. In FIG. 12, instead of the water shutoff valve 12 of FIGS. 9 and 10, an operation handle 13 is provided on the water shutoff valve 12 and is manually opened and closed.

Further, the connection between the branch joint portion 9 and the pipe 7 is
This is performed in the casing 29. This casing 29 is
As shown in FIG. 13, a fixing portion 2 for fixing the sheath tube 8 to the left and right.
3, and the pipe 7 can be taken into the casing 29 by passing through the fixing portion 23. The pipe 7 laid from the header 3 is inserted into the one fixed portion 23, and the pipe 7 laid in the water circulation device 4 is inserted into the other fixed portion 23. Further, the front surface side of the casing 29 is open, so that the branch joint portion 9 and the pipe 7 can be connected and the connection portion can be inspected. The open portion is covered with the lid 24. further,
The lid 24 has an opening, and the coupling portion 14 of the branch joint portion 9 is formed so as to project from the opening. The pipes referred to here include a water supply pipe and a hot water supply pipe.

[0037]

As described above, it is possible to provide a piping system in which a sprinkler nozzle can be easily mounted by utilizing a piping path used for a water supply device in a house or the like. Further, it is possible to provide a piping system in which the nozzle can be easily removed and inspected. Further, it is possible to provide a piping system that is hard to freeze.

[Brief description of drawings]

FIG. 1 shows a piping system according to an embodiment of the present invention.

FIG. 2 shows a piping system according to another embodiment of the present invention.

FIG. 3 shows a piping system according to another embodiment of the present invention.

FIG. 4 shows a piping system according to another embodiment of the present invention.

FIG. 5 shows a piping system according to another embodiment of the present invention.

FIG. 6 shows a piping system according to another embodiment of the present invention.

FIG. 7 shows a case where a branch joint section is provided in a pipe path connected to a toilet bowl.

FIG. 8 shows a piping structure around the water distribution board in FIG.

FIG. 9 shows a piping structure of a branch joint portion which constitutes the present invention.

FIG. 10 shows a piping structure of another branch joint portion which constitutes the present invention.

FIG. 11 shows a piping structure of another branch joint portion which constitutes the present invention.

FIG. 12 shows a piping structure of another branch joint portion which constitutes the present invention.

FIG. 13 shows a piping structure of another branch joint portion which constitutes the present invention.

FIG. 14 shows a fitting connection structure of a branch joint portion and a pipe joint portion which constitutes the present invention.

[Explanation of symbols] 1 Piping system 2 water distribution board 3 header 4 Water equipment 4A toilet bowl 5 water supply pipes 6 water supply pipe, hot water supply pipe 7 piping 8 sheath tube 9 Branch joint 10 Joint part 11 Check valve 12 water stop valve 13 Operation handle 14 Coupling part 15 balls 16 Perimeter 17 Biasing means (spring) 18 sprinkler nozzle 19 Connection end 20 branches 21 O-ring 22 Prevention metal fittings 23 Fixed part 24 lid 25 Foreign matter removal filter 26 on-off valve 27 Pressure reducing valve 28 water heater 29 casing 30 convex 31 cover 32 screw

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2E189 CA04 CA08 CB02 CC02 CC06                       CD00 CG01 CG09                 3H016 CA04                 3H019 BA43 BB01 BB08 BC05

Claims (9)

[Claims] 1. A branch joint portion for detachably connecting a sprinkler nozzle is provided in a pipe path to a water supply device, and a joint portion is connected to the pipe, and the joint portion and the branch joint portion are A piping system characterized in that a fitting prevention fitting is attached to the fitting portion so that the fitting connection is made and the piping is prevented from coming out of the branch joint portion in the fitting direction due to water pressure. 2. A check valve is provided at a branch portion of the branch joint portion connecting the sprinkler nozzle to prevent backflow from the sprinkler nozzle side.
Piping system described in. 3. The piping system according to claim 1, wherein the branch joint portion is provided with a water stopcock. 4. A water shutoff valve is provided inside the branch joint portion, and the water shutoff valve is opened by attaching a sprinkler nozzle to the branch joint portion, and the sprinkler nozzle is removed from the branch joint portion to shut off the water shutoff valve. The piping system according to any one of claims 1 to 3, further comprising opening / closing means for closing the valve. 5. The piping system according to claim 1, wherein the branch joint portion is connected to a pipe in a casing. 6. A water supply pipe is connected to a header, a plurality of pipes are branched from the header, and the branch joint portion is provided in at least one path of the plurality of pipes. Item 6. A piping system according to any one of items 1 to 5. 7. A water supply pipe is branched, and a header is connected to one pipe branched from the water supply pipe. A plurality of pipes are branched from this header, and the other pipe branched from the water supply pipe. The piping system according to any one of claims 1 to 5, wherein the branch joint portion is attached to the. 8. The foreign matter removing filter is interposed in the water supply pipe path.
Piping system described in. 9. The piping system according to claim 1, wherein the water supply device is a toilet bowl.