JPH0857076A - Sprinkler fire extinguishing facility for house and pipe material used for it - Google Patents

Abstract

PURPOSE: To dispense with a detour pipe and prevent the occurrence of dead water by connecting fire extinguishing pipes separated for feed and return paths by a bulkhead inside at the middle of a water feed pipe, feeding the service water through the fire extinguishing pipes when a service water valve is opened, and returning the service water to the water feed pipe. CONSTITUTION: When the faucet 2 of a washroom is opened to feed water, the water fed from a service water main pipe flows into the horizontal joint section 4 of a branch cheese joint 3 from a lower water feed pipe 1. Since the branch cheese joint 3 is provided with a vertical bulkhead 7 at the center, water flows toward a vertical joint section 6 along the vertical bulkhead 7 at the center, then it flows in the feed path of a long pipe 10. Water flows into the horizontal joint section 13 of a head cheese joint 12 and reaches the lower end of the rising long pipe 8. The water having reached the lower end of the long pipe 8 has power and flows into the valve element portion of a sprinkler head 18. The water then passes through a return path 10 and flows out from the faucet 2 at the tip of the water feed pipe 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler fire extinguishing system, particularly a residential sprinkler fire extinguishing system using tap water, and a piping material such as a cheese joint, an elbow joint and a long pipe.

[0002]

2. Description of the Related Art According to the Japanese Fire Service Law, a building where an unspecified number of people gather over a certain area or a certain height,
For example, department stores, theaters, cinemas, high-rise office buildings,
Buildings such as high-rise hotels are obliged to install sprinkler fire extinguishing equipment.

In a sprinkler fire extinguishing system, when a fire occurs, a sprinkler head mounted on the ceiling operates due to an abnormally high temperature of the fire, and water is automatically sprayed to extinguish the fire. Therefore, the sprinkler fire extinguishing equipment has a very excellent effect of protecting the human life because it prevents the fire from becoming large and can extinguish the fire without the person's knowledge.

As described above, it is desired to install the sprinkler fire extinguishing equipment having excellent effects in a general house. However, since the sprinkler fire extinguishing equipment prescribed by the Fire Service Law is for large buildings as described above, its associated equipment In addition, a large-scale water source, a large pump for pumping the water from the water source, and a large-scale device such as a water flow detection device that notifies the flow of water in the pipe were required, and the equipment cost and installation work were very expensive.

Therefore, the advent of a sprinkler fire extinguishing system for a house, which can be installed inexpensively by using tap water, has been desired. However, when tap water is used as a sprinkler fire extinguishing system for a house, there have been regulations under the Water Supply Act, and it has not been practically available so far. That is, according to the Water Supply Act, if there is a stagnation part of water in the middle of the pipe, it rots and becomes so-called "dead water", which is a sanitary problem.

However, as described above, the sprinkler fire extinguishing equipment has a great effect on the initial fire extinguishing and the protection of human lives. Therefore, the tap water law was eased, and tap water was used if water was not generated in the middle of piping. Residential sprinkler fire extinguishing equipment has become available.

Conventional residential sprinkler fire extinguishing equipment is
The water supply pipe connected to the water main was laid in the ceiling as it was, and the falling pipe with the sprinkler head attached to the lower end was connected to the water supply pipe.

Conventionally, as a measure against dead water, a guide pipe for causing convection is installed in a falling pipe to which a sprinkler head is attached or in a joint (Jitsuko Sho 56-181).
No. 263, No. 33561), and a tube for sucking out dead water in the attachment portion of the sprinkler head is installed in the joint (JP-A-3-231685, No. 2316).
No. 86, No. 3-122862), a plurality of strip-shaped plates are arranged side by side in the longitudinal direction on the falling pipe (No.
No. 40667) was proposed.

[0009]

By the way, the conventional measures against dying water are to install a water faucet at the tip of the fire extinguishing pipe so that the water flows through the pipe in one way when the water flows out from the water faucet. , This flow was designed to eliminate water from the fall pipe and the valve body of the sprinkler head. Therefore, the fire-extinguishing pipe connected to the water supply pipe must have a water tap installed at its tip, and a pipe having a detour from the ceiling to the place where the water tap was installed was necessary. However, when the location where the water tap is installed is far from the ceiling, there is a problem that piping for the detour becomes long and material cost and installation cost become expensive.

Although the conventional measures against dying water have some effect, they cannot completely eliminate the dying water.
The reason for this is that even if guide vanes and strips are installed in the pipe, the flow force of the flowing water is not sufficient, and the flowing water falls and flows into the narrow valve body part of the sprinkler head attached to the tip of the pipe. Because I didn't go.

[0011] The present invention is a sprinkler fire extinguishing system for a house and a pipe used for the sprinkler fire extinguishing system, in which the pipes are required only and the water is forced to flow into a place where water is likely to stagnant, and the water never dies in the middle of the pipe. Is to provide wood.

[0012]

Means for Solving the Problems The present inventor allows water in a fire-extinguishing pipe to flow when a water-hydrant is used in another place without installing a water-hydraulic at the tip of the fire-extinguishing pipe. Moreover, the present invention has been completed by intensively studying how to forcefully flow water in the pipe.

A first aspect of the present invention is a fire extinguishing system in which tap water is used as a sprinkler fire extinguishing system for a house, and the inside is separated by a partition wall into a reciprocating path in the middle of a water supply pipe for discharging tap water from a water tap. When the tap water is connected and the tap water flows out from the faucet, the tap water flows back and forth in the fire extinguishing pipe to return to the water feed pipe, and then the tap water flows out from the tap. It is a sprinkler fire extinguishing system for homes.

A second invention of the present invention is a cheese joint for branching, wherein horizontal joints on both sides are connected to a horizontal pipe of a water supply pipe, and vertical joints orthogonal to the horizontal joint are connected to a fire extinguishing pipe. A pipe material for use in a sprinkler fire extinguishing system for a house, characterized in that a vertical partition wall is provided to separate the joint part from left and right.

A third aspect of the present invention is a cheese joint for a head, in which lateral joints on both sides are connected to a lateral pipe of a fire extinguishing pipe, and a vertical joint which is orthogonal to the lateral joint is connected to a falling pipe. A pipe material used for a sprinkler fire extinguishing system for a house, characterized in that a T-shaped partition wall is provided for vertically separating the joint portions and for separating the joint portions from left and right.

A fourth invention of the present invention is an elbow joint used for connecting a horizontal pipe and a falling pipe of a fire-extinguishing pipe,
This is a piping material used in a sprinkler fire extinguishing system for houses, characterized in that a curved partition wall that divides the center into two paths is provided inside.

A fifth aspect of the present invention is a sprinkler fire extinguisher for a house, characterized in that, in a long pipe used as a lateral pipe and a falling pipe of a fire extinguishing pipe, a partition wall for separating the inside into two paths is installed. It is a piping material used for equipment.

[0018]

[Operation] Since a reciprocating passage is installed in the fire extinguishing pipe and water flowing in the water supplying pipe is made to flow in the reciprocating passage of the fire extinguishing pipe, it is not necessary to attach a water tap to the tip of the fire extinguishing pipe. . As a result, it is not necessary to provide a pipe around the tip of the fire extinguishing pipe to the water tap. Also, because water always flows in the outward path of the fire extinguishing pipe, the flow of water has momentum, and water enters into the valve body part of the sprinkler head.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a diagram for explaining a flow state of water in the first invention of the present invention, FIG. 2 is a partially cutaway perspective view of a cheese joint for branching which is a pipe material of the second invention, and FIG. 3 is a pipe material of the third invention. 4 is a partially broken perspective view of a cheese joint for a head, which is a partially broken perspective view of an elbow joint which is a piping material of the fourth invention, and FIG. 5 is a portion of a long pipe which is a piping material of the fifth invention. It is a broken perspective view.

In the embodiment, the case where the sprinkler heads are attached to two places in the room will be described.

The water supply pipe 1 is connected to a water supply main pipe (not shown), and the water supply pipe 1 is provided with a water tap 2 at the toilet on the second floor.

A branch cheese joint 3 which is a fire extinguishing pipe material is connected in the ceiling where the water supply pipe 1 is being piped to the washroom on the second floor. The cheese joint 3 for branching includes horizontal joint portions 4 and 5 and a vertical joint portion 6 in the direction perpendicular to these.
The horizontal joint portions 4 and 5 are connected between the water supply pipes 1 and 1. The internal structure of the branch cheese joint 3 is shown in FIG.
As shown in FIG. 3, a vertical partition wall 7 is provided up to the lower end of the vertical joint portion 6 that divides the horizontal joint portions 4 and 5 at both sides at the center.

A long pipe 8 which is a horizontal pipe made of a fire extinguishing pipe material is connected to the vertical joint portion 6 of the branch cheese joint 3. As shown in FIG. 5, the internal structure of the long tube 8 is provided with a horizontal partition wall 11 that divides the inside into a forward path 9 and a return path 10.

A cheese joint 12 for head is connected to the long pipe 8 of the horizontal pipe. As shown in FIG. 3, the internal structure of the head cheese joint 12 is provided with a T-shaped partition wall 16 that vertically separates the lateral joint portions 13 and 14 and laterally separates the vertical joint portion 15. The long pipes 8 and 8 which are horizontal pipes are connected to the horizontal joint portions 13 and 14 of the head cheese joint 12, and the long pipe 8 which is a falling pipe is connected to the vertical joint portion 15. . A sprinkler head 18 is attached to the lower end of the long pipe 8 of the falling pipe via a reducer 17.

An elbow joint 19, which is a fire extinguishing pipe material, is connected to the other long pipe 8 connected to the head cheese joint 12. The inner structure of the elbow joint has a curved partition wall 20 that divides the center into two paths as shown in FIG.
Is provided. A long pipe 8 which is a falling pipe is connected to the elbow joint, and a sprinkler head 18 is attached to a lower end of the long pipe through a reducer 17.

The branch cheese joint 3, the long pipe 8, the head cheese joint 12, and the elbow joint 19 are connected so that the respective partitions are aligned with each other. In order to match the partition walls, a linear mark indicating the position of the partition wall may be attached to the outer surface of the fire extinguishing pipe material, and the marks may be connected so that they are aligned with each other. In addition, as a connecting means for these fire extinguishing piping materials, a male screw or a female screw is screwed on the connecting portion,
Although they may be connected by screwing, by using a belt-shaped connecting tool such as a grooving joint, the partition walls can be joined together without a gap.

Next, the flow state of the sprinkler fire extinguishing equipment for houses of the present invention during normal times will be described.

When the water tap 2 in the washroom is opened to allow water to flow out, the water sent from the water main (not shown) flows from the lower water pipe 1 to one of the branch cheese joints 3 as shown by the arrow. It flows into the lateral joint section 4. Branch cheese joint 3
Since there is a vertical bulkhead 7 in the inside, the water that has flowed in from one horizontal joint portion 4 does not flow out from the other horizontal joint portion 5, and the vertical horizontal wall 7 extends along the central vertical bulkhead 7. It flows in the direction of the joint portion 6.

Since a long pipe 8 serving as a horizontal pipe is connected to the vertical joint portion 6 of the branching cheese joint 3 in such a manner that the horizontal bulkhead 11 is aligned with the vertical bulkhead 7 of the branching joint 3, water is not supplied. It flows in the outward path 9 of the long tube 8.

The water then flows into one lateral joint portion 13 of the head cheese joint 12 connected to the long pipe 8. Since the T-shaped partition wall 16 is provided inside the cheese joint 12 for the head, water flows downward along the T-shaped partition wall.

A long pipe 8 having a horizontal partition 11 in the center is connected to the vertical joint portion 15 of the cheese joint 12 for the head in a state in which the respective partition walls are combined, so that water passes through the forward path 9. And reaches the lower end of the long pipe 8 which is a falling pipe.

Since the water reaching the lower end of the long pipe 8 is a complete unidirectional flow, it has a force and flows into the valve body portion of the sprinkler head 18 attached to the long pipe 8. Therefore, water does not stay in the valve body portion of the sprinkler head, and new water always flows in.

The water once flowing into the valve body portion of the sprinkler head is returned to the return path 10 of the long pipe 8 which is a falling pipe.
After that, it flows into the cheese joint 12 for the head again, and flows from the lateral joint portion 14 through the outward path 9 of the long tube 8 which is the lateral tube.

In the long tube, the sprinkler head 18 attached to the lower end of the long tube flows out from the elbow joint 19 into the long tube 8 which is a tube in the same manner as described above.
After flowing into the valve body portion of the above, it flows in the return path 10 of the long tube 8 which is a falling tube. This water flows from the elbow joint 19 through the return path 10 of the long tube 8 which is a horizontal tube and the upper flow path of the head joint to the branch cheese joint 3 and the lateral joint portion 5 of the branch cheese joint 5. Flows into the water supply pipe 1 connected to. The water then flows out from the water tap 2 attached to the tip of the water pipe 1.

In the house sprinkler fire extinguishing system of the present invention, a sprinkler head in which the valve body portion was filled with red ink was attached to the lower end of the falling pipe, and tap water was discharged from the water tap at the tip of the water pipe for 10 minutes. After that, when the sprinkler head was removed and the valve body was observed, red ink did not remain at all on the valve body, and tap water had completely flowed to the valve body, and there was no death of water. found.

[0036]

As described above, in the sprinkler fire extinguishing system for a house of the present invention, tap water flows back and forth in the fire extinguishing pipe to which the sprinkler head is attached. Since it is not necessary to attach a water tap to the tip of the pipe, and as a result, unnecessary detour piping is not required, the number of piping materials is small and the construction cost is also low. Further, the pipe material used for the sprinkler fire extinguishing equipment for a house of the present invention has a reciprocating flow passage formed inside one pipe material, so that the flow of water can be urged and the sprinkler water is likely to stagnant. It is possible to achieve an unprecedented excellent effect that water can be infiltrated to the valve body portion of the head and lost.

[Brief description of drawings]

FIG. 1 is a diagram for explaining the flow state of water in the piping of the residential sprinkler fire extinguishing equipment of the present invention.

FIG. 2 is a partially cutaway perspective view of a cheese joint for branching which is a piping material of a second invention of the present invention.

FIG. 3 is a partially cutaway perspective view of a cheese joint for a head which is a piping material of a third invention of the present invention.

FIG. 4 is a partially cutaway perspective view of an elbow joint which is a piping material of a fourth invention of the present invention.

FIG. 5 is a partially cutaway perspective view of a long pipe which is a piping material of a fifth invention of the present invention.

[Explanation of symbols]

 1 Water supply pipe 2 Water tap 3 Cheese joint for branching 8 Long pipe 9 Forward of long pipe 10 Return of long pipe 12 Cheese joint for head 18 Sprinkler head 19 Elbow joint 7, 11, 16, 20 Bulkhead

Claims (5)

[Claims] 1. In a fire extinguishing system that uses water supply as a sprinkler fire extinguishing system for homes, a fire extinguishing pipe whose inside is separated by a partition wall into a reciprocating path is connected in the middle of a water supply pipe for discharging tap water from a water tap. When the tap water flows out from the tap, tap water flows back and forth in the fire extinguishing pipe to return to the water feed pipe, and then the tap water flows out from the tap. Sprinkler fire extinguishing equipment. 2. A cheese joint for branching, wherein horizontal joints on both sides are connected to a horizontal pipe of a water supply pipe, and vertical joints orthogonal to the horizontal joint are connected to a fire extinguishing pipe, with respect to the horizontal joint. A plumbing material used for a residential sprinkler fire extinguishing facility, which is provided with a vertical partition wall that separates it into right and left. 3. A cheese joint for a head in which lateral joints on both sides are connected to a lateral pipe of a fire extinguishing pipe, and a vertical joint which is orthogonal to the lateral joint is connected to a falling pipe. A pipe material used for a sprinkler fire extinguishing system for a house, which is provided with a T-shaped partition wall that separates them from each other with respect to the vertical joint part. 4. A sprinkler fire extinguishing system for a house, wherein an elbow joint used for connecting a horizontal pipe and a falling pipe of a fire extinguishing pipe is provided with a curved partition wall that divides a center into two paths. Plumbing material used for. 5. A pipe material used for a sprinkler fire extinguishing system for a house, characterized in that, in a long pipe used for a horizontal pipe and a falling pipe of a fire extinguisher pipe, a partition wall for separating the inside into two passages is installed. .