JPH03178673A - Sprinkler fire extinguishing equipment - Google Patents

Abstract

PURPOSE:To decrease the connecting part in the middle part of the piping and to prevent a water loss accident by connecting a header to the middle part of a feed water piping through a branch pipe, and connecting a sprinkler head to the end side of plural pieces of branch pipes connected to the header. CONSTITUTION:When a fire is generated in a water spray area and a fire sensor 23 senses it, an opening/closing control valve 20 is opened through a control circuit 28, and water of a branch pipe 18 passes through a header 21 and allowed to fill a branch pipe 24 and a sprinkler head 14. Simultaneously with an opening operation of the opening/closing control valve 20, an alarm lamp 30 of a control panel 27 is turned on, an alarm bell 29 sounds, an alarm bell 36 of a housing information panel 35 also sounds, and to a central monitoring panel, as well, it is communicated as an alarm state. When the fire further spreads and a temperature becomes high, a fusible alloy of the sprinkler head 14 of the water spray area is melted and an opening operation is executed, water of the branch pipe 24 is discharged from this sprinkler head 14, and fire extinguishment is executed. In the case the sprinkler head 14 is opened by a shock, the fire sensor 23 does not operate, therefore, no water spray is executed, and a water loss accident is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a sprinkler fire extinguishing system suitable for residential use.

(Prior art) Fire extinguishing equipment using sprinklers is very effective in initial extinguishing, and is therefore used not only in buildings that are required to be installed under the Fire Service Act, such as high-rise buildings, theaters, and department stores, but also in buildings where fire outbreaks occur. It is desirable to install it in a place where it is easy to do so or in a general residence.

In order to save large equipment costs such as large-capacity water tanks and water pumps for sprinkler equipment, it has been known to use closed sprinkler heads directly connected to water pipes. There is.

For example, as shown in an overhead perspective view of a construction example in FIG. 5, a branch pipe 102 branched from a water pipe 101 is led into, for example, a kitchen 103, and a water tap 104 is provided.

Each watering area (area) where sprinkler head 105 needs to be installed, for example, kitchen 103, living room 106, altar room 1
07. Roughly loop-shaped piping 1 that sequentially passes through bedrooms 108, 109, bathroom 110, etc., and returns to the kitchen 103 at the end
11 is formed.

In order to arrange the sprinkler head 105 at the most effective location in each water sprinkling area, the piping 111 drawn through each water sprinkling area has to be curved.

FIG. 6 is a system diagram of a conventional sprinkler-fire extinguishing equipment used in buildings, etc., in which a branch pipe 121 is connected to a fire extinguishing water main 120 from a fire extinguishing water tank (not shown), and a T Branch pipes 124 to 128 are connected via a cross joint 122 and a cross joint 123, and a sprinkler head 129 is connected to the tips of the branch pipes 124 to 128.

Each of the branch pipes 124 to 128 is connected to a variety of pipes selected from a variety of diameters corresponding to the supply amount of fire extinguishing water required at the terminal side.

(Problem to be solved by the invention) In the conventional sprinkler fire extinguishing equipment, one pipe 111
This is a method in which water is passed through each watering area sequentially.
There are many bends, and these bends have elbows,
As a result, the piping work becomes troublesome as union joints and the like are required, and the risk of water leakage increases due to the large number of such joints.

Since the complexity of piping work increases equipment costs, there is a need for particularly low equipment costs, and
This is disadvantageous for residential fire extinguishing equipment, where water leakage is highly discouraged.

In addition, in residential areas, sprinkler heads 10
5 may be subjected to impact, which can lead to water damage accidents due to head damage, so countermeasures against this are also required.

In addition, in conventional sprinkler fire extinguishing equipment for buildings, etc., it is necessary to prepare a large number of pipes with different diameters and various types of fittings, etc., and to connect them without fail. The construction work was extremely troublesome.

In order to solve the above-mentioned problems of conventional sprinkler fire extinguishing equipment, this invention makes it possible to minimize the number of connection points in the middle of piping, and is effective in preventing water damage accidents. In order to solve the above-mentioned problems, the present invention provides a sprinkler fire extinguishing system that requires less quantity and is suitable for residential use.In order to solve the above problems, the present invention connects a header 21 to the middle of the water supply pipe 16 via a branch pipe 18, and connects it to each water spray area. A closed type sprinkler head 14 is connected to the distal end of a plurality of branch pipes 24 connected to the header 21.

Furthermore, in the above configuration, a fire detector 23 that operates earlier than the sprinkler head 14 is disposed for each watering area or for each plurality of watering areas, and is provided in the branch pipe 18 and is normally in a closed state. The opening/closing control valve 20 is configured to be opened by the sensing operation of the fire detector 23.

It is desirable that the branch pipe 24 is formed of a flexible pipe.

(Function) Sprinkler head 14 arranged in each watering area
Since most of the sprinkler heads 24 are connected to the header 21 by individual branch pipes 24, these branch pipes 24 are not restricted to the installation positions of other sprinkler heads 14 and can be arranged in a simple manner with a small number of bends. The piping is shaped in a similar shape, has fewer bends, requires fewer joints, and is advantageous in preventing water leakage. On the header 21 side, all the branch pipes 24 can be connected at a gathering position, simplifying piping work. .

The branch pipes 24 can have the same diameter, so there is no need to prepare many types of branch pipes and joints with different diameters, and it is possible to prevent the use of branch pipes with the wrong diameter or joints with different diameters. .

Fire detector 23 for each watering area or multiple watering areas
In the invention in which the branch pipe 18 is provided with a normally closed on-off control valve 20, when the fire detector 23 is activated due to a fire, the on-off control valve 20 opens and pressure water is supplied to the sprinkler head 14. Then, when the sprinkler head 14 performs an opening operation, water is sprayed.

Since the fire detector 23 does not operate when the sprinkler head 14 is opened by impact, water is not sprayed and water damage accidents are prevented.

If the branch pipe 24 is made of a flexible pipe, there is no need for connection work using joints in the middle of the branch pipe 24, and the branch pipe 24
Just by connecting the base side to the header 21 and the distal side to the sprinkler head 14, the reaction work is almost completed, making it extremely simple.

(Embodiment) Next, a case where an embodiment of the present invention is applied to an apartment complex will be described based on the drawings.

Figure 1 shows, for example, a sprinkler system installed in one residential unit.
FIG. 2 is an overall perspective view of the fire extinguishing equipment, and is a schematic front view showing the state in which the sprinkler fire extinguishing equipment of FIG. 1 is applied to an apartment complex.

Water flowing from a water main 3 into a water receiving tank 4 is pumped up by a pump 5 into an elevated water tank 2 on the rooftop of an apartment complex 1, and the water in the elevated water tank 2 passes through a water pipe 7 via a check valve 6. The water is branched to each dwelling unit 8 through a pipe 9, and water is supplied through a faucet 1O.

On the other hand, the water in the elevated water tank 2 is pressurized by a pressurized water supply unit 13 consisting of an auxiliary water tank 11 equipped with a pole tap and a boost pump 12.
If the head difference between the sprinkler head 14 and the sprinkler head 14 is, for example, 10 m or more, the pressurized water supply unit 13 is not necessary).
The water is sent to the water supply pipe 16 via the check valve 15, and an end test valve 17 is connected to the end of the first floor to test whether the pressurized water supply unit 13 automatically starts normally.

If such a piping system is used, the water supply piping system 7 and the fire extinguishing water supply piping system 16 are separated by the pole tap of the auxiliary water tank 11, and the fire extinguishing water goes around into the drinking water, resulting in drinking water. is not contaminated.

Further, when the water in the auxiliary water tank 11 decreases due to the activation of the boost pump 12 due to the opening of the sprinkler head 14, etc., the pole tap operates to transfer the water from the elevated water tank 2 to the auxiliary water tank 11.
1 to ensure water for fire extinguishing.

A branch pipe 18 is connected to the water supply pipe 16 of 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 water spray areas in this dwelling unit 8, closed sprinkler heads 14 and fire detectors 23 are installed near each sprinkler head 14.
The sprinkler heads 14 are arranged individually, or about two to three sprinkler heads 14 that are close to each other are arranged in series, each with a joint 25 on the end side of the branch pipe 24. connected through
The proximal ends of these branch pipes 24 are connected to joints 26 such as unions.
It is connected to the header 21 via.

Note that if a plurality of sprinkler heads 14 are provided in the same room, one fire detector 23 may be provided for each of the plurality of sprinkler heads 14.

The water control valve 19, opening/closing control valve 20, and header 21 are conveniently operated when installed in an equipment box that houses a switchboard, gas meter, etc. installed in the dwelling unit 8, or in a pipe shaft. A control panel 27 is installed near the fire alarm 19, etc., and a control circuit 2, an alarm bell 29, an alarm lamp 30, and a release switch 31 are installed on the control panel 27, and each fire detector 23 is connected to the control circuit 28 by a wiring 32. , the on-off control valve 20 is connected to the control circuit 2 by wiring 33.
Connected to 8.

In the living room of dwelling unit 8, a housing information board 35 equipped with an ink horn 34 used for communication with people outside the front door is installed, so this housing information board 35 is also equipped with an alarm bell 36 and controlled by wiring 37. Connect the circuit 28 and the alarm bell 36,
Further, the operation of the alarm cell 36 is reported to a central monitoring board (not shown) that performs intensive monitoring of each dwelling unit 8 through wiring 38.

The branch pipe 24 is preferably a flexible pipe with good piping construction, such as a polyethylene pipe, a bolybdenum pipe, etc., which are lightweight, high strength, and have excellent temperature characteristics.

The joint 25 connecting the sprinkler head 14 to the branch pipe 24 consists of an elbow 39 and a union 40 at the distal end, and a T-joint 41 and a union 40 at the intermediate position.
It is fixed to a ceiling beam 43 with a fixture 42, as shown in FIG. 3 as a longitudinal sectional front view of the main part and as shown in FIG. 4 as a side view.

The illustrated fixture 42 has a "shaped" shape, and its standing piece 44 is provided with elongated holes 45 at the top and bottom, and the horizontal piece 46 is fixed using a ceiling beam 43 and a hay insert 47, and the mounting surface 4 of the three elbows is fixed.
The three elbows and the sprinkler head 14 are fixed to the ceiling beam 43 by adjusting the mounting position of the standing piece 44 vertically along the elongated hole 45 and tightening the mounting screw 49. The tip of the sprinkler head 14 extends from the cutout hole 51 to a water sprinkling area (range) 52 at a predetermined height.
I will be looking forward to it.

A protective cap 53 is attached to the tip of the elbow 39 by fitting or screwing, and protects the sprinkler head 14 from construction work such as the ceiling panel 50.

After the interior work is completed, the protective cap 53 will be removed from the elbow 39 and a decorative plate will be attached in its place.

For the sprinkler head 14, a high-sensitivity, low-flow type is suitable for residential buildings, and the fire detector 23 uses a fixed-temperature spot type, but there are various types such as ionization type, photoelectric type, differential type, etc. can use things.

Next, the operation of the above equipment will be explained.

In the normal state when the fire detector 23 is not activated, the on-off control valve 20 is closed and there is no pressure water in the header 21, branch pipe 24, and sprinkler head 14, and the state is the same as that of a so-called dry sprinkler, or the branch pipe Even if there is water in the pipe 24, it is in an unpressurized state.

If a fire occurs in the water spraying area (range) formed in this state and the fire detector 23 detects the fire, the control circuit 28 will control the opening/closing control. The i-valve 20 is opened and the water in the branch pipe 18 passes through the header 21 and fills each branch pipe 24 and sprinkler head 14 with water.

At the same time as the opening/closing control valve 200 opens, the alarm lamp 30 on the control panel 27 lights up, the alarm bell 29 rings, and the housing information panel 3
The alarm bell 36 of No. 5 also rings, and a notification is also sent to a central monitoring board (not shown) as a state of alarm.

When the fire further spreads and the temperature rises, the fusible alloy of the sprinkler head 14 in the area concerned melts and opens.
The water in the branch pipe 24 is discharged from the sprinkler head 14 to extinguish the fire.

At this time, the branch pipe 24 and the joint 25 try to dance due to large fluctuations in water pressure, but since the elbow 39 is fixed to the ceiling beam 43 by the fixture 42, the joint 25 does not dance.

Manual release of the alert state and stop of water discharge from the sprinkler head 14 can be performed by turning on a release switch 31 provided on the control panel 27, and this turning on operation closes the on-off control valve 20. The alarm lamp 30 is turned off and the alarm bells 29 and 36 are stopped.

Even if the sprinkler head 14 is opened due to an object hitting it when there is no alarm, the open/close control valve 20 remains closed and no water is sprayed. Water damage does not occur even if a shock is applied to open the door, so water damage does not occur.
- Suitable for fire extinguishing equipment for houses where sailors live.

As described above, each branch pipe 24 is connected to the sprinkler head 14 distributed in each watering area.
Since the base side of the pipe is connected to the header 21 in a concentrated manner, the connection work with the header 21 is concentrated and the number of man-hours for the connection work is greatly reduced, and each branch pipe 24 is It is possible to have a simple piping shape with a small number of bends without being restricted by the installation position of other sprinkler heads 14, and because the number of bends is small, there are fewer joints, which is advantageous in preventing water leaks. ing.

In the case of the embodiment, since a flexible pipe is used as the branch pipe 24, there is no need for connection work using joints in the middle of the branch pipe 24, compared to conventional piping using hard pipes. The proximal side of the branch pipe 24 is connected to a header, and the distal side is connected to a sprinkler.
The piping work is almost completed just by connecting each to the head 14, which is extremely simple, and the number of risky areas for water leakage is greatly reduced.The construction cost is low, there is little shallow water, and it is suitable for residential sprinklers. - It became suitable as a fire extinguishing equipment.

In the above embodiment, the case of an apartment complex was explained, but it can also be used for a single-family house, a building, etc.

In the case of a single-family house, the branch pipe 18 may be connected to a water pipe, for example, a sanitary pipe, drawn from a water pipe through a main valve.

In the case of a building, a header 21 is provided for each floor or block of each floor depending on the area of the building.
A branch pipe 24 may be used to connect the sprinkler head 14 and the sprinkler head 14 provided in each watering area. In this case, by using the header 21, there is no need to prepare and use many types of branch pipes and joints with different diameters as in the past.
Piping mistakes are eliminated and work efficiency is greatly improved.

(Effects of the Invention) As described above, according to the present invention, most of the sprinkler heads 14 arranged in each watering area are
Each branch pipe 24 is connected to the header 21 by a separate branch pipe 24, so that these branches 24 are connected to other sprinkler pipes.
The piping has a simple shape with fewer bends without being restricted by the arrangement of the head 14, and the number of joints is reduced, reducing the risk of water leakage.
Since the pipes are connected at a single location, piping work is simplified and construction costs are reduced.

In principle, the branch pipes 24 and sprinkler heads 14 correspond one-to-one, so each branch pipe 24 can have the same diameter, eliminating the need for multiple types of branch pipes and joints, and preventing piping mistakes and connections. Now you can get rid of the hassle.

Fire detector 23 for each watering area or multiple watering areas
In the invention in which a normally closed on-off control valve 20 is provided in the branch pipe 18, when the sprinkler head 14 is opened by impact, the fire detector 23 does not operate and the on-off control valve 20 does not open. Water is not sprayed, water damage accidents are prevented, and -C is suitable for fire extinguishing equipment for residential buildings where people live.

In the invention in which the branch pipe 24 is made of a flexible pipe, connection work using joints in the middle of the branch pipe 24 is completely unnecessary, and the base side of the branch pipe 24 is connected to the header 21, and the end side is connected to the sprinkler head 14. The plumbing work is basically completed just by connecting them to each other, and it is simple and there is no risk of water leakage - especially for residential sprinklers, etc., where low cost and no water damage accidents are strongly required - especially for fire extinguishing equipment. Are suitable.

[Brief explanation of 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 equipment of Fig. 1 applied to an apartment complex, and Fig. 3 is a diagram of the sprinkler and fire extinguishing equipment in Fig. 1. Fig. 4 is a side view of Fig. 3;
FIG. 5 is a perspective view showing one example of a conventional sprinkler fire extinguishing system, and FIG. 6 is a system diagram showing another example of a conventional sprinkler fire extinguishing system. 1...Apartment housing 2...Elevated water tank 3...
Water main 4...Water tank 5...Pump
6.15...Check valve 7...Water piping
8...Dwelling unit 9...Plumbing 10
... Faucet 11 ... Auxiliary water tank 12 ... Boost pump 13 ... Pressure water unit 14 ... Sprinkler head 16 ... Water supply piping 17 ... Terminal test valve 18 ...
... Branch pipe 19 ... Water control valve 20 ... Opening/closing control valve 21 ... Header 23 ... Fire detector 24 ... Branch pipe 25.26 ... Joint
27... Control 1111 board 28... Control circuit 29.
36... Alarm bell 30... Alarm lamp 31...
Release switch 32.33.37.38... Wiring 34... Ink horn 35... Housing information board 39.
...Elbow 40...Union 41...T
Shape joint 42... Fixture 43... Ceiling beam
44... Standing piece 45... Long hole
46...Horizontal piece 47...Insert 48
... Mounting surface 49 ... Mounting screw 51 ... Cutout hole 53 ... Protective cap 50 ... Ceiling plate 52 ... Watering area

Claims (3)

[Claims] (1) A header is connected to the middle of the water supply piping via a branch pipe, and closed sprinkler heads placed in each watering area are connected to the ends of multiple branch pipes connected to the header. Sprinkler fire extinguishing equipment featuring (2) A fire detector that operates earlier than the sprinkler head is placed in each watering area or multiple watering areas, and an open/close control valve installed in the branch pipe that is normally closed is installed in the fire detector. 2. The sprinkler fire extinguishing equipment according to claim 1, wherein the sprinkler fire extinguishing equipment is configured to be opened by a sensing operation. (3) The sprinkler fire extinguishing equipment according to claim 1 or 2, wherein the branch pipe is formed of a flexible pipe.