JPH10179786A - Sprinkler fire extinguishing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sprinkler fire extinguishing equipment capable of reducing the connection parts of a piping middle part as much as possible, effectively preventing water loss accidents, reducing the kinds of branching pipes and being suitable for houses as well. SOLUTION: This sprinkler fire extinguishing equipment is provided with the branching pipe 18 provided by crossing a water supply piping 16, a header 21 connected to the branching pipe 18 and provided with one flow-in port and plural flow-out ports, a sprinkler head 14 provided in respective sprinkling areas, a connector 39 mounted to the sprinkler head 14 and fixed to a ceiling beam and a flexible pipe 24 bent, slackened and deflected on the back surface side of a ceiling plate whose base end is connected to the flow-out port of the header 21 and end is connected to the connector 39 of the sprinkler head 14.

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 suitable for residential use.

[0002]

2. Description of the Related Art Fire extinguishing systems using sprinklers are very effective in extinguishing fires at the beginning, so high-rise buildings, theaters,
In addition to buildings that are required to be installed by the Fire Service Law, such as department stores, it is desirable to install them in places where fires are likely to occur or in general houses. Conventionally, there has been known a method of directly connecting a closed type sprinkler head to a water pipe in order to save a large amount of equipment cost such as a large-capacity water tank and a water supply pump for the sprinkler equipment.

For example, as shown in an overhead perspective view of a construction example in FIG. 5, a branch pipe 102 branched from a water supply pipe 101 is pulled into, for example, a kitchen 103 and provided with a water tap 104. Each sprinkling area (range) where the sprinkler head 105 needs to be installed, for example, the kitchen 103, the living room 106, the French room 107, the bedrooms 108 and 109, and the bathroom 1
A generally loop-shaped pipe 111 is formed at the end, which is returned to the kitchen 103 again by sequentially passing 10 and the like. Sprinkler head 1 at the most effective location in each watering area
05 to be installed, the piping 1
11 must be bent.

FIG. 6 is a system diagram of a sprinkler fire extinguishing system used in a conventional building or the like. A branch pipe 121 is connected to a fire extinguishing water main pipe 120 from a fire extinguishing water tank (not shown). T-shaped joint 122 and cross joint 123
The branch pipes 124 to 128 are connected via the branch pipes 124 to 128.
A sprinkler head 129 is connected to the tip of 128. Each of the branch pipes 124 to 128 is selected and connected to various types of pipes with a diameter corresponding to the amount of fire extinguishing water required on the end side.

[0005]

In a conventional sprinkler fire extinguishing system, one pipe 111 is sequentially passed through each sprinkling area, so that there are many bent portions,
An elbow, a union joint, and the like are required at the bent portions. As a result, the plumbing work becomes troublesome, and the risk of water leakage increases due to the large number of such joints.

[0006] Such a complicated plumbing construction increases the equipment cost, so that the equipment cost is particularly required to be low, and it is disadvantageous as a fire extinguishing system for a house in which water leakage is extremely disliked. I have.

In a residential area, the sprinkler head 105 may be erroneously impacted, causing a water damage accident due to the head breakage.

In a conventional fire extinguishing system for a sprinkler in a building or the like, it is necessary to prepare a large number of pipes having different diameters and various joints corresponding thereto, and they must be connected without fail. The construction was very troublesome.

According to the present invention, in order to solve the above-mentioned problems of the conventional sprinkler fire extinguishing system, the number of connection points in the middle of the pipe can be reduced as much as possible, which is effective in preventing water damage accidents. It is an object of the present invention to provide a sprinkler fire extinguishing system suitable for not only buildings but also houses as well as a small number of types.

[0010]

According to the present invention, there is provided a branch pipe provided crossing a water supply pipe; a header connected to the branch pipe and having one inlet and a plurality of outlets; A sprinkler head provided in each watering area;
A connector connected to the sprinkler head and fixed to a fixing member; a base end connected to an outlet of the header, a distal end connected to a connector of the sprinkler head, and a ceiling plate And a flexible tube bent on the back side of the sprinkler.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Most of the sprinkler heads located in each sprinkling area are connected to the header by individual flexible tubes, so that these flexible tubes are arranged in other sprinkler heads. It is a simple pipe shape with few bends without being restricted by the installation position,
Since the number of bends is small, the number of joints is small and the prevention of water leakage is also advantageous. On the header side, connection can be made at a position where all the flexible tubes are gathered, and piping work is simplified.

The flexible pipes can have the same diameter, and there is no need to prepare many types of branch pipes and different diameter joints having different diameters. Is prevented. If a fire detector is arranged for each sprinkling area or for each of a plurality of sprinkling areas and a normally closed on / off control valve is provided in the branch pipe, when the fire detector operates due to a fire, the on / off control valve opens and the sprinkler head The sprinkler head is opened to spray water.

When the sprinkler head is opened by an impact, the fire detector does not operate, so that no water is sprayed and a water damage accident is prevented. Since it is a flexible tube, connection work using joints at an intermediate portion of the flexible tube is completely unnecessary, and only the base side of the flexible tube is connected to the header and the end side is connected to the sprinkler head. The plumbing work was almost finished and it became extremely simple.

[0014]

Next, a case where the first embodiment of the present invention is applied to an apartment house will be described with reference to the drawings. FIG. 1 is an overall perspective view of a sprinkler fire extinguishing system arranged in one dwelling unit, for example, and FIG. 2 is a schematic front view showing a state in which the sprinkler extinguishing system of FIG. 1 is applied to an apartment house.

The water flowing into the receiving tank 4 from the water main 3 is pumped into the elevated water tank 2 on the roof of the apartment house 1 by the pump 5, and the water in the elevated water tank 2 is supplied to the water supply pipe 7 through the check valve 6. Through a pipe 9 to each dwelling unit 8, and water is supplied by a faucet 10.

On the other hand, the water in the elevated water tank 2 is pressurized by a pressurized water supply unit 13 including an auxiliary water tank 11 having a ball tap and a boost pump 12 (the sprinkler head 14 of the dwelling unit 8 on the top floor and the dwelling unit 8 on the top floor). If the drop of water can be taken, for example, 10 m or more, such a pressurized water supply unit 1
3 is unnecessary), sent to the water supply pipe 16 via the check valve 15, and connected to the end of the first floor is an end test valve 17 for testing whether the pressurized water supply unit 13 automatically starts normally. .

If such a piping system is used, the water supply pipe system 7 and the fire extinguishing water supply pipe system 16 are separated by the ball tap of the auxiliary water tank 11, so that the fire extinguishing water flows into the drinking water. Drinking water is not contaminated. Further, when the boost pump 12 is activated and the water in the auxiliary water tank 11 is reduced due to opening of the sprinkler head 14 or the like, the ball tap operates to automatically supply the water in the elevated water tank 2 to the auxiliary water tank 11 to secure fire extinguishing water. .

A branch pipe 18 is connected to a water supply pipe 16 to each dwelling unit 8, and a water control valve 19, a solenoid valve type opening / closing control valve 20, and a header 21 are sequentially connected to the branch pipe 18. .

In the kitchen, living room, bedroom, bathroom, etc. which are watering areas in the dwelling unit 8, a closed type sprinkler head 14 and a fire detector 23 are arranged near each sprinkler head 14, respectively. Each of the sprinkler heads 14 is connected alone, or a few sprinkler heads 14 approaching each other are connected in series with each other via a joint 25 to the distal end of a branch pipe 24 which is a flexible pipe. The proximal ends of these branch pipes 24 are connected to the header 21 via a joint 26 such as a union. If a plurality of sprinkler heads 14 are provided in the same room, the fire detector 23
May be one for a plurality of sprinkler heads 14.

The water control valve 19, the opening / closing control valve 20 and the header 21 are convenient for operation when they are installed in an equipment box containing a switchboard, a gas meter, and the like provided in the dwelling unit 8 or on a pipe shaft. Water control valve 19
A control panel 27 is installed near the control panel 28, and a control circuit 28, an alarm bell 29, an alarm lamp 30 and a release switch 31 are provided on the control panel 27. Each fire detector 23 is connected to the control circuit 28 by a wiring 32 and opened and closed. The control valve 20 is connected to the control circuit 28 by a wiring 33.

In the living room of the dwelling unit 8, a house information panel 35 provided with an interphone 34 used for communication with the outside of the entrance is provided. 37, the control circuit 28 and the alarm bell 3
6 is connected, and the operation of the alarm bell 36 is notified to a central monitoring panel (not shown) for centralized monitoring of each dwelling unit 8 via a wiring 38.

The branch pipe 24 is a pipe using a flexible pipe and having a good piping work, such as a polyethylene pipe or a polybutene pipe which is lightweight and has high strength and excellent temperature characteristics.

The joint 25 connecting the sprinkler head 14 to the branch pipe 24 is constituted by an elbow 39 and a union 40 at the distal end, and is constituted by a T-joint 41 and a union 40 at an intermediate position. As shown in a side view in FIG. 4, a longitudinal front view of a main part is fixed to a ceiling beam 43, which is an example of a fixing member, by a fixture 42.

The illustrated mounting fixture 42 is of a shape, and its standing piece 44 is provided with long holes 45 at the top and bottom, and the horizontal piece 46 is fixed to the ceiling beam 43 using an insert 47.
The elbow 39 and the sprinkler head 14 are fixed to the ceiling beam 43 by adjusting the mounting position of the standing piece 44 to the mounting surface 48 of the ninth 9 along the long hole 45 and tightening the mounting screw 49. From the cutout hole 51 of the plate 50, the tip end of the sprinkler head 14 faces the watering area (range) 52 at a predetermined height.

Reference numeral 53 denotes a protective cap attached to the distal end portion of the elbow 39 by a screw means or the like, and protects the sprinkler head 14 from construction work such as the ceiling panel 50. After the interior work is completed, the protective cap 5
3 will be removed from elbow 39 and a cosmetic plate will be attached instead.

The sprinkler head 14 is preferably of a high sensitivity and small water type for a house, and the fire detector 23 is of a constant temperature spot type. Various things can be used.

Next, the operation of the above equipment will be described. In a normal state in which the fire detector 23 does not operate, the open / close control valve 20 is closed and the header 21, the branch pipe 24 and the sprinkler head 14 have no pressurized water, and are in the same state as a so-called dry sprinkler, or There is no pressure even if there is water inside.

In this state, when a fire occurs in a certain sprinkling area (range) and the fire detector 23 performs a sensing operation, the opening / closing control valve 20 opens via the control circuit 28 and the fire extinguishing water in the branch pipe 18 is opened. Is supplied to the respective branch pipes 24 and the sprinkler heads 14 through the header 21.

At the same time as the opening / closing control valve 20 is opened, the alarm lamp 30 of the control panel 27 lights up, the alarm bell 29 sounds,
The alarm bell 36 of the house information panel 35 also sounds, and a central monitoring panel (not shown) is notified as a warning state.

Further, when the fire spreads and becomes high temperature, the fusible alloy of the sprinkler head 14 in the sprinkling area melts and opens, and the water in the branch pipe 24 is discharged from the sprinkler head 14 to extinguish the fire.

At this time, as shown in FIG. 1, the branch pipe 24 and the joint 25, which are arranged in a bent and relaxed and bent state, try to dance due to a large fluctuation of water pressure. Since the fixing 39 is fixed to the ceiling beam 43 by the fixture 42, the joint 25 does not dance.

Then, the warning state is manually released, and
The water discharge of the sprinkler head 14 can be stopped by turning on a release switch 31 provided on the control panel 27. By this closing operation, the open / close control valve 20
Operates with the alarm lamp 30 turned off and the alarm bell 2 closed.
9, and 36 are stopped.

Even if the sprinkler head 14 is opened when an object hits the sprinkler head 14 or the like when the alarm state is not set, the water is not discharged because the open / close control valve 20 is kept closed. Water damage does not occur because water is not discharged even if an impact is given accidentally,
It is suitable for fire extinguishing equipment for houses where ordinary people enter and leave.

As described above, the branch pipes 24 connected to the sprinkler heads 14 distributed in the respective watering areas have their bases intensively connected to the header 21. And the number of steps for connection work will be greatly reduced,
Moreover, each branch pipe 24 is not restricted by the position where the other sprinkler head 14 is disposed, and as shown in FIG. The shape can be taken, and the number of bends is small, so that the number of joints is small, which is advantageous for preventing water leakage.

In the case of this embodiment, since a flexible pipe is used as the branch pipe 24, a connection work using joints at an intermediate portion of the branch pipe 24 is more difficult than a conventional pipe using a hard pipe. Is completely unnecessary, and the piping operation is almost completed simply by connecting the base side of the branch pipe 24 which is a flexible pipe to the header and the sprinkler head 14 at the end side. Since the number of locations was further reduced, the construction cost was low and there was little water leakage, which made it suitable as a fire extinguishing system for residential sprinklers.

Although the above embodiment has been described with reference to a multi-family house, the present invention can also be applied to a single-family house or a building. In the case of a detached house, the branch pipe 18 may be connected to a water pipe drawn from the water main via a main valve, for example, a sanitary pipe.

In the case of a building, a header 21 is provided for each floor or for each block on each floor according to the area thereof.
What is necessary is just to connect between each header 21 and the sprinkler head 14 provided in each watering area by the branch pipe 24. In this case, the use of the header 21 eliminates the need to prepare and use various types of branch pipes and different-diameter joints having different diameters as before, and eliminates piping mistakes and greatly improves workability.

[0038]

As described above, according to the present invention, most of the sprinkler heads arranged in each sprinkling area are connected to the header by individual flexible tubes, respectively. The tube can be placed in a desired position in a bent and bent state without being constrained by other sprinkler head arrangements. Also, connection work using joints in the middle of the flexible tube is completely unnecessary, and the piping work is almost completed by simply connecting the base side of the flexible tube to the header and the end side to the sprinkler head. Simple and less likely to leak. for that reason,
INDUSTRIAL APPLICABILITY The present invention is particularly suitable for a sprinkler fire extinguishing system for a house or the like in which low cost and no water damage accident are strongly required.

Since the flexible tube and the sprinkler head correspond in principle on a one-to-one basis, each flexible tube can be made to have the same diameter, so that it is not necessary to prepare various types of branch pipes and joints. Connection errors can now be eliminated.

Since the connecting member of the sprinkler head is fixed to the fixing member, the connecting member does not dance even if the flexible tube dances due to a change in water pressure. Therefore, breakage of the connector can be prevented.

Since the connecting device has an elbow portion, the flexible tube is connected in the lateral direction when connecting to the connecting device. For this reason, the space in the height direction required for connecting the flexible tube and the connector can be significantly reduced. Therefore, even if there is a sufficient height in the height direction of the ceiling (for example, an apartment house or the like, an apartment house, the first floor of a two-story private house, etc.) or the height of the ceiling. Air conditioning ducts are installed behind the ceiling as seen in ordinary buildings, etc., and installation of sprinkler heads and connection of flexible pipes to fittings even in places where the height is not sufficiently large are required. It can be done easily.

Since the flexible tube is used, if it is necessary to change the installation position of the sprinkler head due to a change in the layout after installation, the flexible tube is in a bent state, that is,
Provided in a relaxed state. Therefore, since the movable range is wide, it is possible to freely and easily cope with the position change.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of the present invention.

FIG. 2 is a schematic front view of the sprinkler fire extinguishing system of FIG. 1 applied to an apartment house.

FIG. 3 is a vertical sectional front view of a main part showing a state of attachment of the sprinkler head in FIG. 1;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a perspective view showing an example of a conventional sprinkler fire extinguishing system.

FIG. 6 is a system diagram showing another example of a conventional sprinkler erasure.

[Explanation of symbols]

 3 water main 7 water supply pipe 8 dwelling unit 9 pipe 14 sprinkler head 16 water supply pipe 18 branch pipe 21 header 24 branch pipe 25 joint 39 elbow 40 union 41 T-joint 42 fittings 43 ceiling beam 50 ceiling plate 51 cutout hole

Claims (4)

[Claims] 1. A branch pipe provided to cross a water supply pipe;
A header connected to the branch pipe and having one inlet and a plurality of outlets; a sprinkler head provided in each sprinkling region; mounted on the sprinkler head and fixed to a fixing member A flexible tube whose proximal end is connected to the outlet of the header, whose distal end is connected to the connector of the sprinkler head, and which is bent on the back surface side of the ceiling plate. A sprinkling fire extinguishing system characterized by the following. 2. The sprinkler fire extinguishing system according to claim 1, wherein the connecting member has an elbow portion. 3. The sprinkler fire extinguisher according to claim 1, wherein the header has an inlet at an end of the tubular body and a plurality of outlets on a peripheral side. Facility. 4. The sprinkler head is closed,
The sprinkler fire extinguishing equipment according to claim 1, 2 or 3, wherein the sprinkler is inserted into a cutout hole of the ceiling plate.