JP3089573B2 - Fire extinguisher with flame detector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing system equipped with a flame detector, and more particularly to a fire extinguishing system that is effective and suitable for a large-scale fire such as an atrium.

[0002]

2. Description of the Related Art In recent years, many buildings having a large space such as an atrium have been built in buildings and the like. In these large spaces, even if sprinkler equipment is installed on the ceiling, the temperature rise due to fire is slow due to problems such as the height of the sprinkler head, and it takes time for the sprinkler head to operate, and even if it operates, water will not The particle size of water becomes so small as to reach the floor and fire cannot be extinguished effectively. Therefore, a fire extinguishing means such as an indoor fire hydrant or a water spray gun through human hands is provided. However, since this fire extinguishing means is not an automatic fire extinguishing method, there is a drawback that quickness and operability are poor. Therefore, in order to solve the above problem, a fire extinguishing system including a flame sensor having a wide monitoring range and a plurality of open watering heads interlocked with the flame sensor is installed.

[0003]

However, in the conventional equipment, in the event of a fire, a plurality of open-type watering heads on the secondary side of the simultaneous opening valve are operated simultaneously, so that those watering heads are operated simultaneously. Sprinkling heads are installed on the entire site, and the fire area is flooded.
Therefore, not only is it difficult to clean up, but also the fire is extinguished by a large amount of water that is unnecessary for fire extinguishing.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is an object of the present invention to provide a fire extinguishing system that prevents water damage due to excessive water discharge by extinguishing the fire with a minimum necessary amount of water when a fire occurs. Aim.

[0005] The present invention monitors multiple flame detectors.
And a fire monitoring area consisting of multiple monitoring zones and the same piping
Formed by a plurality of open watering heads provided in the
Fire extinguisher with multiple sprinkling zones
The flame detectors correspond to the respective monitoring sections.
And each of the open-type watering heads is opened.
Comprising a discharge valve, the shape of the monitoring section and the shape of the water discharge section
Are formed in the same shape, or the shape of the water discharge section is
The monitoring area is formed slightly larger than the shape of the monitoring area.
The above problem is intended to be solved by the overlapping of the water discharge section and the corresponding water discharge section .

[0006]

When the fire detector detects a fire, it outputs a fire signal to the control means. Then, the control means opens the opening valve of the watering head corresponding to the flame sensor. For this reason, only the monitoring section of the flame sensor is sprinkled to extinguish the fire only in that section.

[0007]

An embodiment of the present invention will be described with reference to the accompanying drawings. A plurality of pairs of the flame sensors 2 to 7 and the open type watering heads 8 to 13 are provided on the blow-out peripheral surface 1 at a predetermined height, for example, 5 m from the floor surface F. The pair of flame detectors 2 to 7 and the open type watering heads 8 to 13 are provided close to each other. Have been.

The flame detectors 2 to 7 detect the occurrence of a fire by detecting radiant energy or the like from the flame generated when an object burns. For example, the monitoring angle θ is 80.
The monitoring range is fan-shaped. The monitoring section a of each of the sensors 2 to 7 has a triangular shape as indicated by a chain line. The monitoring sections a collectively constitute one fire monitoring area A. In the fire monitoring area A, a part of the monitoring section a adjacent to each other overlaps.

The open type watering heads 8 to 13 are disposed on the same pipe 16 as shown in FIG. 1, and each of the heads 8 to 13 is provided with an opening valve 17 which is opened by control means (not shown). ing. The heads 8 to 13 form a sector-shaped water discharge section b as shown by a two-dot chain line in FIG. The water discharge section b overlaps the monitoring section a of the corresponding flame detectors 2 to 7, but the water discharge section b is formed slightly larger than the monitoring section a. As the watering heads 8 to 13,
For example, a watering head having a near-cast water outlet and a far-cast water outlet is used. The water discharge section b collects to form one sprinkling area B. The sprinkling area B completely includes the fire monitoring area A.

Next, the operation of the present invention will be described. When a fire occurs in the fire monitoring area A, the flame detector 3 monitoring the monitoring section a at the fire occurrence point detects the radiant energy from the flame and outputs a fire signal to a fire receiver (not shown). The fire receiver activates a watering equipment control panel (not shown) to open the valve 1 of the watering head 12 corresponding to the flame detector 3.
7 is opened, and a pressurized water supply device (not shown) is driven.

Then, water is started to be sprayed from the watering head 12, water is sprayed in a fan shape, and water is evenly sprayed to the water discharge section b, and the triangular monitoring section a is completely covered with water. Therefore, the fire source in the monitoring section a is completely extinguished. At this time, since the opening valves 17 of the other watering heads are not opened, water is not sprayed far away from the fire occurrence point.

The embodiment of the present invention is not limited to the above. For example, instead of automatically operating the watering equipment control panel when the fire receiver receives a fire signal, the fire prevention center of the disaster prevention center may be used. After the operator confirms the fire,
The manual start button may be pressed to open the release valve.

If the fire is likely to spread quickly and spread the fire, the opening valve of the watering head 12 corresponding to the flame detector 3 that has detected the fire is opened, and the watering head near the watering head 12 is opened. The opening valves 17 of 8 and 9 may be opened at the same time, and may be set in advance in the watering equipment control panel so as to expand the water discharge range.

Instead of forming the water discharge section b wider than the monitoring section a, they may be made to have the same shape and the same range by using flame detectors having different viewing angles. In this case, the water discharge section b can be easily set, and the design of the mounting position of the watering head can be simplified. A head that sprays water over a substantially rectangular area (see Japanese Patent Application No. 61-56273) may be used as the watering head.

[0015]

As described above, according to the present invention, since the flame detectors are provided corresponding to the respective monitoring sections and the watering heads are provided with the respective opening valves, the fire occurrence point is defined as the monitoring section. By detecting the fire of the flame sensor, the opening valve of the watering head corresponding to the flame sensor can be opened to spray water only to the water discharge section corresponding to the monitoring section. for that reason,
Since the amount of fire extinguishing water required for fire extinguishing can be kept to a minimum, waste of fire extinguishing water can be eliminated and water damage due to excessive discharge can be prevented.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a use state.

FIG. 3 is a plan view showing an arrangement of an open type watering head.

FIG. 4 is a plan view showing an arrangement of a flame detector.

[Explanation of symbols]

 2-7 Flame detector 8-13 Open type watering head 16 Pipe 17 Opening valve A Fire monitoring area a Monitoring area B Watering area b Water discharging area

Claims (5)

(57) [Claims] 1. The method of claim 1, wherein the plurality of flame sensors are monitored by a plurality of flame sensors.
It is installed on the same pipe as the fire monitoring area consisting of
Formed by multiple open watering heads
Fire extinguishing equipment having a sprinkling area comprising a section, wherein the flame detector is provided corresponding to each of the monitoring sections.
The open-type watering heads each have an open valve, and the shape of the monitoring section and the shape of the water discharge section are the same.
Or the shape of the water discharge section is
It is formed slightly larger than the shape, and the monitoring section and the corresponding water discharge section overlap.
A fire extinguishing system with a flame detector. 2. A method according to claim 1, wherein the plurality of flame sensors are monitored by a plurality of flame sensors.
It is installed on the same pipe as the fire monitoring area consisting of
Formed by multiple open watering heads
Fire extinguishing equipment having a sprinkling area comprising a section, wherein the flame detector is provided corresponding to each of the monitoring sections.
Vignetting, the open sprinkler heads, when each comprises a release valve bets
In addition, each of the water discharge sections is provided corresponding to each of the water discharge sections, and the shape of the monitoring section and the shape of the water discharge section are the same.
Or the shape of the water discharge section is
It is formed slightly larger than the shape, and the monitoring section and the corresponding water discharge section overlap.
A fire extinguishing system with a flame detector. 3. A flame detector is, according to claim 1 or claim 2, characterized in that it is connected to the open valve via the control unit
Fire extinguishing equipment with flame detector as described. 4. The fire extinguishing equipment with a flame detector according to claim 3 , wherein the control means opens an opening valve of the watering head corresponding to the flame detector that has detected the fire. Wherein the control means, flame detector of claim 3, wherein the allowed to open the release valve of the sprinkler head adjacent the watering head and diverging water head corresponding to the flame detector that detected the fire, respectively Fire extinguishing equipment.