JP2802658B2 - Sprinkler fire extinguishing equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a sprinkler fire extinguishing system which is also suitable for residential use.

(Prior art) Fire extinguishing systems using sprinklers are very effective for initial fire extinguishing. Therefore, in addition to high-rise buildings, theaters, department stores, and other buildings that must be installed under the Fire Services Act,
It is desirable to install it 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 the overhead view of the construction example in FIG.
103 is retracted and a water tap 104 is provided.

Each sprinkler head 105 needs to be installed in a sprinkling area (range), such as a kitchen 103, a living room 106, a French room 107, bedrooms 108, 109, a bathroom 110, and the like. Pipe 111 is formed.

In order to arrange the sprinkler head 105 at the most effective location in each sprinkling area, the pipe 111 that is passed through each sprinkling area must be bent.

FIG. 6 is a system diagram of a sprinkler fire extinguishing system used in a conventional building and the like. A branch pipe 121 is connected to a digestion water supply main pipe 120 from a fire extinguishing water tank (not shown).
1 is connected to branch pipes 124 to 128 via a T-shaped joint 122 and a cross joint 123, and a sprinkler head is attached to the tip of the branch pipes 124 to 128.
129 are connected.

Each of the branch pipes 124 to 128 is selected and connected to various types of pipes with a diameter corresponding to the required amount of fire extinguishing water supplied on the end side.

(Problems to be Solved by the Invention) Conventional sprinkler fire extinguishing systems have the following problems.

(1) In the conventional example, since one pipe 111 is sequentially passed through each sprinkling region, a number of bent portions are required, and an elbow, a union joint, and the like are required at the bent portions. As a result, the plumbing work is troublesome, and the risk of water leakage increases because the number of such joints is large.

Since such complicated piping work increases the equipment cost, it is particularly required that the equipment cost be low, and it is disadvantageous as a fire extinguishing equipment for a house in which water leakage is extremely disliked.

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

(3) In the conventional example, the branch pipe connects the branch pipe and the sprinkler head via a joint, but a hard pipe is used as the branch pipe.

However, when this hard tube is used, a) when an external force is accidentally applied to the hard tube during construction, b) the building shakes due to the occurrence of an earthquake and moves in the vertical direction or the left and right direction. When the positional relationship changes, etc.,
Concentrated stress is applied to the joint. Therefore, the joint is damaged, and water leaks therefrom.

(4) When the fire extinguishing area changes due to the change of the building, the sprinkler head must be rearranged. At this time, after removing the branch pipe from the sprinkler head, the sprinkler head must be moved to a predetermined position, and then the sprinkler head must be connected to the branch pipe again.

Further, since the positional relationship between the two is changed by the movement of the sprinkler head, the removed branch pipe cannot be used, so that a new branch pipe or joint must be prepared. Therefore, the operation time of the pattern change is prolonged, and new costs are required for preparing a new branch pipe or the like.

(5) Since plumbing work is performed behind a narrow ceiling, connecting a branch pipe to a sprinkler head via a downwinding pipe or the like makes it difficult to perform work and poor work efficiency.

In view of the above circumstances, an object of the present invention is to facilitate construction work and to prevent water leakage.

(Means for Solving the Problems) The present invention relates to a branch pipe connected to an intermediate part of a water supply pipe; a header connected to the branch pipe and having a plurality of water outlets; A sprinkler fire extinguishing system comprising: a sprinkler head provided so as to face a sprinkling area through a branch pipe; and a branch pipe connecting each sprinkler head to the water outlet. A plurality of water outlets having the same diameter are formed laterally on the peripheral side, and each of the branch pipes is a flexible pipe having the same diameter that is bent and bent behind the ceiling. The flexible tube has a proximal end connected to the water outlet through the same type of lateral proximal joint, and a distal end connected to the sprinkler head via the same type of lateral end joint. Is characterized by Sprinkler fire extinguishing equipment.

(Operation) After connecting the proximal end of the flexible tube to the water outlet of the header via the horizontal proximal joint, the branch pipe is extended toward the sprinkler head, and the end of the branch pipe is connected to the sprinkler head via the horizontal terminal joint. Connecting.

At this time, the flexible tube is in a bent and bent state, that is, in a relaxed state. Therefore, even if an external force is applied to the flexible tube by mistake, or the positional relationship between the sprinkler head and the header due to an earthquake or the like. Is changed and external force is applied, the flexible tube absorbs the external force.

Therefore, since no concentrated stress is applied to the joint, the joint is not damaged, and no water leakage accident occurs from the joint.

When the arrangement of the sprinkler head is changed at the time of changing the pattern of the building, if the sprinkler head is moved to a predetermined position, the flexible tube also moves while being freely deformed, so that the arrangement can be easily changed.

The header is a tubular body having one end connected to the outlet of the branch pipe, and a plurality of water outlets having the same diameter are formed laterally on the circumferential side, so that the structure has a low flow resistance. I have. That is, the fire extinguishing water that has flowed into the header from the outlet of the branch pipe is bent only once in a perpendicular direction and flows into the water outlet, so that the pressure loss is extremely small.

Therefore, water can be efficiently supplied to the sprinkler head.

The proximal end of each flexible tube is connected to the water outlet through the same type of lateral proximal joint, and the distal end is connected to the sprinkler head through the same type of lateral end joint. The flexible tube has a substantially horizontal connection to the transverse proximal joint and to the transverse distal joint. Therefore, it is possible to connect with sufficient margin even in the ceiling where there is not enough height.

(Embodiment) Next, a case where one embodiment of the present invention is used in an apartment house will be described with reference to the drawings.

FIG. 1 is an overall perspective view of a sprinkler fire extinguishing system disposed 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 passes through the water supply pipe 7 via the check valve 6. Each dwelling unit 8 is branched by a pipe 9 and supplied with water by a faucet 10.

On the other hand, the water in the elevated water tank 2 is supplied to a pressurized water supply unit comprising an auxiliary water tank 11 having a ball tap and a boost pump 12.
Pressurized by 13 (If the drop between the elevated water tank 2 and the sprinkler head 14 of the dwelling unit 8 on the top floor can be taken, for example, by 10 m or more, such a pressurized water supply unit 13 is not required), and is supplied to the water supply pipe 16 via the check valve 15 At the end of the first floor, an end test valve 17 for testing whether the pressurized water supply unit 13 normally starts automatically is connected.

When such a piping system is used, the water supply pipe 7 system and the fire extinguishing water supply pipe 16 system are separated by the ball tap of the auxiliary water tank 11, so that the fire extinguishing water flows into the drinking water and the drinking water is discharged. No contamination. When the boost pump 12 is activated and the water in the auxiliary water tank 11 is reduced by opening 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 and 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 open / close control valve 20, and a header 21 are sequentially connected to the branch pipe 18.

The header 21 is a tubular body having one end connected to the outlet of the branch pipe 18, and a plurality of water outlets having the same diameter are formed laterally on a peripheral side thereof.

The kitchen, living room,
Closed sprinkler heads 14 for bedrooms, bathrooms, etc.
And a fire detector 23 is disposed near each sprinkler head 14, respectively, and each sprinkler head 14 is used alone or a few sprinkler heads 14 approaching each other are connected in series with each other. Each of the branch pipes 24 is connected to the distal end side via a lateral end joint 25 of the same type. Connected to water outlet.

When a plurality of sprinkler heads 14 are provided in the same room, one fire detector 23 may be provided 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 arranged in a device box containing a switchboard, a gas meter and the like provided in the dwelling unit 8 or on a pipe shaft. Control panel 27 near 19 mag
A control circuit 28, an alarm bell 29, an alarm lamp 30 and a release switch 31 are provided on a control panel 27, each fire detector 23 is connected to the control circuit 28 by a wiring 32, and the open / close control valve 20 is connected by a wiring 33. Connected to control circuit 28.

In the living room of the dwelling unit 8, a housing information panel 35 provided with an interphone 34 used for a call outside the entrance is provided.
, The control circuit 28 and the alarm bell 36 are connected to each other, and the operation of the alarm bell 36 is notified via a wiring 38 to a central monitoring panel (not shown) that performs centralized monitoring of each dwelling unit 8.

As the branch pipes 24, flexible pipes having the same diameter are used, respectively, and pipes having good piping work, for example, polyethylene pipes and polybutene pipes which are lightweight and have high strength and excellent temperature characteristics are preferable.

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

The illustrated mounting fixture 42 has a shape, and its standing piece 44 is provided with long holes 45 at the top and bottom, and a horizontal piece 46 is inserted into the ceiling beam 43.
47, and adjust the mounting position of the standing piece 44 to the mounting surface 48 of the elbow 39 along the long hole 45 in the vertical direction.
By tightening the 49, the elbow 39 and the sprinkler head 14 are fixed to the ceiling beam 43, and the front end portion of the sprinkler head 14 can be seen at a predetermined height from the cutout hole 51 of the ceiling plate 50 into the sprinkling area (range) 52. Become.

Reference numeral 53 denotes a protection cap attached to the distal end 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 53 is removed from the elbow 39, and a decorative plate is attached instead.

For the sprinkler head 14, a high sensitivity small water type is suitable for a house, and the fire detector 23 uses a constant temperature spot type, but an ionization type, a photoelectric type, a differential type, etc.
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 do not have 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 water in the branch pipe 18 is removed by the header.
Each branch pipe 24 and the sprinkler head 14 are filled with water through 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 the central monitoring panel (not shown) is notified as a warning state. Is done.

Furthermore, when the fire spreads and becomes high temperature, the fusible alloy of the sprinkler head 14 in the sprinkling area 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 the large fluctuation of the water pressure, but the elbow 39 is attached to the ceiling beam 43 by the fixture 42.
The joint 25 does not dance.

The manual release of the alert state and the stoppage of water discharge of the sprinkler head 14 can be performed by turning on a release switch 31 provided on the control panel 27, and the closing operation causes the opening / closing control valve 20 to close. Then, the alarm lamp 30 is turned off and the alarm bells 29 and 36 are stopped.

Even when the sprinkler head 14 hits an object and performs an opening operation when not alert, the on-off control valve 20 remains closed, so that no water is discharged, and therefore, a shock is accidentally applied to the tip of the sprinkler head 14. Since water is not discharged even when the opening operation is performed, no water damage accidents occur, and the present invention is suitable for fire extinguishing equipment for houses where ordinary people enter and exit.

As described above, the respective branch pipes 24 connected to the sprinkler heads 14 dispersedly arranged in the respective watering areas.
Since the base side is intensively connected to the header 21, the connection work with the header 21 is concentrated and the man-hour for the connection work is greatly reduced. Piping can be performed without being restricted by the position where the other sprinkler heads 14 are disposed, and since the number of bends is small, the number of joints is reduced, which is advantageous for preventing water leakage.

In the case of this embodiment, since a flexible pipe is used as the branch pipe 24, connection work using joints at an intermediate portion of the branch pipe 24 is completely unnecessary as compared with a conventional pipe using a hard pipe. By simply connecting the proximal end of the branch pipe 24 to the header and the distal end to the sprinkler head 14, the piping work is almost completed, which is extremely simple, and the risk of water leakage is further reduced. As a result, the construction cost was low and there was little water leakage, making it suitable as a fire extinguishing system for residential sprinklers.

In the above embodiment, the description has been given of the case of a multiple dwelling house.

In the case of a single-family 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 may be provided for each floor or for each block of each floor, depending on the area, and the branch pipe 24 may be connected between each header 21 and the sprinkler head 14 provided in each watering area. . In this case, the use of the header 21 eliminates the need to prepare and use many types of branch pipes and different-diameter joints having different diameters as before, and eliminates piping mistakes and greatly improves workability.

(Effects of the Invention) The present invention is configured as described above, and has the following remarkable effects.

(1) Since the sprinkler heads facing each watering region are connected to the header by individual flexible tubes, these flexible tubes can be piped without being restricted by the arrangement of other sprinkler heads. With
On the header side, all branch pipes are connected at a single location, so piping work is simplified and construction costs are reduced.

(2) Since the same type of flexible tube, the same type of horizontal proximal joint, and the same type of horizontal terminal joint are used, there is no need to prepare various types of branch pipes and joints, and piping errors and connection errors are eliminated. You can now get rid of it.

(3) Since the branch pipe is formed of a flexible pipe, connection work using joints at an intermediate portion of the flexible pipe is completely unnecessary. Is simply connected to the horizontal end joint, and the piping work is almost complete.
It is particularly suitable for a sprinkler fire extinguishing system for a house or the like, which is required to be simple and less likely to leak water and to be inexpensive and free from water damage accidents.

(4) The header is a cylindrical body having one end connected to the outlet of the branch pipe, and a plurality of water outlets having the same diameter are formed laterally on the peripheral side, so that the header has a structure with low flowing water resistance. Has become. That is, the digestion water that has flowed into the header from the outlet of the branch pipe is bent only once in a right angle direction and flows into the water outlet, so that the pressure loss is extremely small. Therefore, the required flow rate can be efficiently supplied to the sprinkler head.

(5) The proximal end of each flexible tube is connected to the water outlet through the same type of lateral proximal joint, and the distal end is connected to the sprinkler head through the same type of lateral end joint. As a result, the flexible tube has a substantially horizontal connection to the transverse proximal joint and to the transverse distal joint. Therefore, it is possible to connect with sufficient margin even in the ceiling where there is not enough height.

(6) Since the flexible tube is arranged on the back side of the ceiling in a bent and bent state, that is, in a relaxed state, even if an external force is accidentally applied to the flexible tube, the sprinkler head may be damaged by an earthquake or the like. Even if the positional relationship between the and the header changes and external force is applied,
The flexible tube absorbs the external force. Therefore, since no concentrated stress is applied to the joint, the joint is not damaged, and no water leakage accident occurs from the joint.

(7) When the arrangement of the sprinkler head is changed at the time of changing the pattern of the building, if the sprinkler head is moved to a predetermined position, the flexible tube also moves while being freely deformed, so that the arrangement can be easily changed.

[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 showing the application of the sprinkler fire extinguishing system of FIG. 1 to an apartment house, and FIG. 3 shows a sprinkler head mounted state in FIG. FIG. 4 is a side view of FIG. 3, FIG. 5 is a perspective view showing an example of conventional sprinkler fire extinguishing equipment, and FIG. 6 is a system showing another example of conventional sprinkler fire extinguishing. FIG. 15 Sprinkler head 16 Water supply pipe 18 Branch pipe 21 Header 24 Branch pipe 25 Joint 26 Joint 39 Elbow 40 Union 41 T-joint 50 Ceiling Plate 51 ... Cutout hole

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-83331 (JP, A) JP-A-60-174161 (JP, A) JP-A-49-80893 (JP, A) 40826 (JP, U) Japanese Utility Model Showa 55-21746 (JP, U) "Air Conditioning and Sanitary Engineering", published in January 1988, Vol. 63 No. 1P. 5-17, "Water supply / hot water supply piping system and construction examples"

Claims (2)

(57) [Claims] A branch pipe connected at an intermediate portion of a water supply pipe;
A header connected to the branch pipe and having a plurality of water outlets; a sprinkler head provided to face a sprinkling area through each cutout hole in the ceiling plate; and connecting each sprinkler head to each water outlet. A sprinkler fire extinguishing system comprising: a branch pipe; the header being a tubular body having one end connected to an outlet of the branch pipe, and a plurality of water outlets having the same diameter arranged sideways on a circumferential side thereof. Each of the branch pipes is a flexible pipe having the same diameter that is bent and bent on the back side of the ceiling, and the base end of each of the flexible pipes is connected to the water outlet through the same type of horizontal base joint. A sprinkler fire extinguishing system, characterized in that the ends thereof are connected to the sprinkler head through lateral end joints of the same kind. 2. The flexible tube according to claim 1, wherein a proximal end of the flexible tube is fixed by the header by the lateral proximal joint, a distal end of the flexible tube is fixed by the lateral terminal joint, and an intermediate portion thereof is not fixed. The sprinkler fire extinguishing equipment according to claim 1, wherein