WO2014115718A1

WO2014115718A1 - Sprinkler fire extinguishing equipment and fire extinguishing container

Info

Publication number: WO2014115718A1
Application number: PCT/JP2014/051098
Authority: WO
Inventors: 烈夫木塚
Original assignee: 株式会社合同防災
Priority date: 2013-01-22
Filing date: 2014-01-21
Publication date: 2014-07-31
Also published as: HK1211892A1; JP6117554B2; CN104936657A; CN104936657B; JP2014140418A

Abstract

Sprinkler fire extinguishing equipment in which a sprinkler supplied with water from a water supply pipe via plumbing sprinkles water by driving an electromagnetic valve for closing the water supply path from the filled water supply pipe to the plumbing communicating with the sprinkler such that the water supply path is opened in the event of a fire on the basis of a reception signal from a sensor for sensing at least one of heat or smoke, the sprinkler fire extinguishing equipment being provided with a fire extinguishing container attached to the bottom surface side of the plumbing, and accommodating a fire-extinguishing fluid. The fire extinguishing container has a thin tube the lower end of which is disposed in the fire-extinguishing fluid, and the upper end of which is disposed in the plumbing. The thin tube has a shape such that when water flows from the water supply pipe into the plumbing, pressure occurs due to the Venturi effect, and the fire-extinguishing fluid is sucked up from the upper end of the thin tube and can be supplied into the plumbing.

Description

Sprinkler fire extinguishing equipment and fire extinguishing containers

Cross-reference of related applications

This international application claims priority based on Japanese Patent Application No. 2013-9431 filed with the Japan Patent Office on January 22, 2013, and is based on Japanese Patent Application No. 2013-9431. The entire contents are incorporated into this international application.

The present invention relates to a sprinkler fire extinguishing facility and a fire extinguishing container that spray water when a fire occurs.

Conventionally, when heat or smoke that causes fire is detected by a sensor, a water supply path is opened by driving an electromagnetic valve provided between the water pipe and the pipe, so that the sprinkler supplied through the pipe is Sprinkler fire extinguishing equipment that sprinkles water is known.

In this type of sprinkler fire extinguishing equipment, in order to improve the fire extinguishing performance etc., instead of just sprinkling tap water from the sprinkler, a solution of a chemical substance that has an action to suppress the reaction of combustion (hereinafter referred to as “extinguishing agent liquid”) It has been studied to spray a solution obtained by diluting water with tap water (hereinafter referred to as “fire-extinguishing aqueous solution”).

In contrast, in the sprinkler fire extinguishing equipment, the applicant of the present application communicates the tank containing the fire-extinguishing aqueous solution (first tank) to the sprinkler side piping and the empty tank (second tank) to the solenoid valve side piping. When the water supply path is opened by driving the solenoid valve, water pressure is applied in the direction in which the second tank supplied through the pipe crushes the first tank, and the fire extinguishing aqueous solution from the crushed second tank Has been proposed (for example, see Patent Document 1).

Utility Model Registration No. 3139295

However, in the sprinkler fire extinguishing equipment described in Patent Document 1, it is necessary to store a fire extinguishing aqueous solution whose weight is increased by diluting a fire extinguisher liquid in advance in the first tank. There is a problem that such a burden is increased, and it is difficult to secure an installation space due to the large volumes of the first tank and the second tank.

In one aspect of the present invention, it is desirable to provide a sprinkler fire extinguishing equipment and a fire extinguishing container that can suitably spray a fire extinguishing aqueous solution with a simple configuration.

One aspect of the present invention is an electromagnetic valve that shields a water supply path from a filled water distribution pipe to a pipe communicating with a sprinkler in the event of a fire based on a received signal from a sensor that senses at least one of heat and smoke. Is a sprinkler fire extinguishing facility in which the sprinkler supplied with water from the distribution pipe through the pipe is sprinkled by driving so that the water supply path is opened.

In the present invention, in such a sprinkler fire extinguishing equipment, a fire extinguishing container that contains a fire extinguisher liquid is attached to the lower surface side of the pipe. This fire extinguishing container is provided with a thin tube having a lower end disposed in the extinguishing agent liquid and an upper end disposed in the pipe. This narrow pipe has a shape that allows negative pressure to be generated due to the venturi effect when water flows into the pipe from the water distribution pipe, and the extinguisher liquid is sucked up from the upper end to supply the extinguisher liquid into the pipe. .

In such a configuration, when the heat and smoke that cause the fire are detected by the sensor, the water supply path is opened by driving an electromagnetic valve provided between the water pipe and the pipe. When water flows in, the fire extinguisher liquid in the fire extinguishing vessel is sucked up into the narrow tube in proportion to the force of the water flow, and the fire extinguisher liquid supplied into the pipe is mixed with the water to dilute the fire extinguisher liquid. The solution (fire extinguishing solution) is supplied to the sprinkler.

Therefore, the present invention is a structure in which a fire extinguishing container that contains a fire extinguisher liquid is attached, and when a water supply path is opened by driving a solenoid valve, a fire extinguishing aqueous solution is created using the force of water flowing in the pipe. It is possible to suppress the volume of the fire extinguishing container and the weight of the extinguishing agent liquid. For this reason, according to this invention, a fire-extinguishing aqueous solution can be sprayed suitably with a simple structure.

In the present invention, the narrow tube is preferably arranged so that the opening at the upper end faces the sprinkler side in the pipe. In such a configuration, it is possible to supply the fire extinguishing agent liquid into the pipe through the narrow pipe without countering the force of the water flowing in the pipe, so that a fire extinguishing aqueous solution can be more suitably created.

Specifically, in the present invention, the thin tube is preferably formed in an L shape. In such a configuration, depending on the length of the thin tube, the total resistance received when the extinguishing agent liquid is sucked into the thin tube increases. Therefore, the degree of freedom to adjust the length of the thin tube increases, and at a desired ratio. It becomes easy to adjust so that the fire extinguisher liquid is mixed with water.

By the way, the larger the portion of the cross section perpendicular to the water flow direction that is blocked by the narrow pipe in the pipe, the lower the pressure due to Bernoulli's theorem, and the negative pressure in the pipe tends to become negative. The ratio (amount and speed) of the extinguishing agent liquid to be increased.

For this reason, if the narrow pipe is formed so that the pipe diameter becomes large in the pipe, the extinguishing agent liquid can be supplied to the pipe in a large ratio. On the other hand, when it is desired to reduce the proportion of the extinguishing agent liquid supplied into the pipe, it is preferable that the pipe diameter is constant, for example.

However, when the pipe diameter is constant, the ratio (amount and speed) of water flowing in the pipe is estimated from the inner diameter of the pipe, for example, and it is possible to cope with a case where it is desired to increase the ratio of the extinguishing agent liquid supplied into the pipe. As described above, the opening of the upper end of the narrow tube is preferably cut obliquely. In such a configuration, the cross-sectional area of the opening at the upper end of the thin tube is larger than that before cutting, so that the pressure in the opening is larger than the surrounding area in the pipe, and the extinguishing agent liquid is supplied from the opening to the pipe. Becomes easier to flow. Therefore, according to such a configuration, it is possible to easily finely adjust the ratio of the extinguishing agent liquid supplied into the pipe through the narrow pipe without changing the pipe diameter.

In the present invention, the fire-extinguishing container may have an opening attached to the pipe so that water flows in from the pipe and the fire extinguisher liquid is pushed down. In this case, by opening the water supply path by driving a solenoid valve provided between the water pipe and the pipe, when water flows into the fire extinguishing vessel from the pipe, the fire extinguisher liquid is pushed down, The fire extinguisher liquid is easily supplied into the pipe through the narrow pipe.

In the present invention, a fire extinguishing container may be distributed on the market alone. Specifically, the present invention is a fire extinguishing container that is attached to the lower surface side of a pipe at least in a sprinkler fire extinguishing equipment and contains a fire extinguisher liquid, a lower end is disposed in the fire extinguisher liquid, and The upper tube is provided with a narrow tube, and the shape of this tube is that when water flows into the pipe from the water distribution pipe, negative pressure is generated due to the venturi effect, and the fire extinguisher liquid is sucked up from the upper end. As long as it can be supplied into the pipe. According to such a structure, the effect similar to the effect mentioned above can be acquired by attaching to a sprinkler fire extinguishing equipment.

It is a block diagram which illustrates the whole structure of a sprinkler fire extinguishing equipment. It is an image figure which illustrates the structure of a fire extinguishing container. It is explanatory drawing which illustrates operation | movement of a sprinkler fire extinguishing equipment.

DESCRIPTION OF SYMBOLS 1 ... Sprinkler fire extinguishing equipment, 2 ... Sprinkler, 3 ... Sensor, 4 ... Piping, 5 ... Solenoid valve, 6 ... Fire extinguishing container, 7 ... Fire receiver, 8 ... Solenoid valve control panel, 9 ... Water distribution pipe, 10 ... Stop Water valve, 11 ... main body, 11a ... mounting port, 13 ... thin tube, 13a ... opening, 14 ... joint, 20 ... fire extinguisher liquid.

Embodiments of the present invention will be described below with reference to the drawings.
<Overall configuration>
As shown in FIG. 1, the sprinkler fire extinguishing equipment 1 of this embodiment includes a sprinkler 2, a sensor 3, a pipe 4, a solenoid valve 5, a fire extinguishing container 6, a fire receiver 7, and a solenoid valve control panel. 8. Among these, the sprinkler 2 and the sensor 3 are installed on the ceiling of the living room indoors of the building. The pipe 4, the electromagnetic valve 5, and the fire extinguishing container 6 are installed behind the ceiling of the room.

The sensor 3 is a sensor that outputs a fire signal indicating that when detecting at least one of heat and smoke. For example, in the type that senses heat, the internal heat-sensitive part is activated when the temperature rises above a predetermined temperature or at a rate of temperature rise due to the heat of the fire. As this heat-sensitive part, for example, metal plates having different thermal expansion coefficients are bonded together, and when receiving heat, a metal plate having a high expansion coefficient bends outward, and a metal having a low expansion coefficient bends inward (contact surface side). There are some which output an electrical signal when bending at a predetermined temperature. In addition, there are types that detect smoke, one that detects changes in the ionization state of air due to fire smoke, and one that detects diffuse reflection or shading of light.

The fire receiver 7 receives the fire signal output from the sensor 3. Specifically, the fire receiver 7 is connected to the sensor 3, and when a fire signal output from the sensor 3 is received (input), a fire light (not shown) is turned on or a buzzer is sounded. In addition, an operation signal is output to the electromagnetic valve control panel 8. In addition, the fire receiver 7 is provided with an operation panel and switches for the user to operate. For example, when the fire is extinguished, the fire light is turned off and the buzzer is stopped by these operations. At this time, a release signal is output to the solenoid valve control panel 8.

The solenoid valve control panel 8 controls the drive of the solenoid valve 5. Specifically, the solenoid valve control panel 8 is connected to the fire receiver 7 and opens at least to open the solenoid valve 5 when receiving (inputting) an operation signal output from the fire receiver 7. Output a signal. The electromagnetic valve control panel 8 is configured to output a closing drive signal for closing the electromagnetic valve 5 when receiving (inputting) the release signal output from the fire receiver 7.

The solenoid valve 5 is connected to the solenoid valve control panel 8 and opens and closes the valve by moving an iron piece called a plunger using the magnetic force of the solenoid in accordance with a drive signal output from the solenoid valve control panel 8. It is. Specifically, the solenoid valve 5 is provided between the water distribution pipe 9 and the pipe 4. In the solenoid valve 5, the valve is in a fully closed state so as to shield the water supply path communicating from the water distribution pipe 9 to the pipe 4 at normal times, and an open drive signal from the solenoid valve control panel 8 is input. In the event of a fire, the valve is fully opened to open the water supply path. The solenoid valve 5 is configured such that when the closing drive signal is input from the solenoid valve control panel 8, the valve is again fully closed (returns to a normal state).

The water distribution pipe 9 is filled with tap water supplied from a water source (not shown). The water distribution pipe 9 is normally filled with tap water pressurized in the direction of the electromagnetic valve 5, and when a fire occurs, the water supply path is opened by driving the electromagnetic valve 5. Accordingly, pressurized tap water (hereinafter referred to as “pressure water”) is supplied into the pipe 4. In addition, the water distribution pipe 9 may be connected to a pressurized water supply device (not shown) for supplying pressure water.

The pipe 4 is installed to supply the pressure water flowing from the distribution pipe 9 to the sprinkler 2, and a water stop valve 10 for stopping the pressure water is provided at the tip of the pipe 4. Further, when a fire extinguisher liquid 20 to be described later is supplied from the fire extinguisher 6 to the pipe 4, an aqueous solution in which the fire extinguisher liquid 20 and pressure water flowing from the water distribution pipe 9 are mixed (hereinafter referred to as “extinguishing aqueous solution”). Is supplied to the sprinkler 2. In addition, the piping 4 of this embodiment shall be formed in the cylinder shape with an equal internal diameter in any location. A joint 14 (see FIG. 2) for attaching the fire extinguishing container 6 is fused to a predetermined portion of the pipe 4 between the solenoid valve 5 and the sprinkler.

The sprinkler 2 is installed in the vicinity of the sensor 3 and applies a high pressure to a fire extinguishing aqueous solution supplied through the pipe 4 (pressure water supplied from the water distribution pipe 9 through the pipe 4 when the extinguishing agent liquid 20 is used up). It is a device that sprinkles and sprays water from a nozzle (not shown) of the sprinkler head. The sprinkler 2 according to the present embodiment includes an open sprinkler head having no heat sensitive part. The sprinkler 2 continues to spray the fire-extinguishing aqueous solution (or pressure water) supplied through the pipe 4 while the water supply path is open in the event of a fire. In addition, the sprinkler 2 is configured to stop watering as the solenoid valve 5 is driven to block the water supply path and stop the supply of the fire-extinguishing aqueous solution (or pressure water).

<Composition of fire extinguishing container>
As shown in FIG. 2, the fire-extinguishing container 6 is attached to the joint 14 of the pipe 4 and includes a main body 11 and a thin tube 13. It is assumed that the joint 14 has been drilled on the bottom side in advance after being joined to the pipe 4, and the opening on the bottom surface is threaded to attach the main body 11 downward.

The main body 11 accommodates the fire extinguishing agent liquid 20 and has an attachment port 11 a that is screwed into the opening of the joint 14. The attachment port 11a of this embodiment makes the inside of the piping 4 and the main-body part 11 communicate, and is opened so that a pressure water may flow in from the piping 4 at the time of a fire. In addition, the main-body part 11 and the coupling 14 are sealed with various reinforcing tools so that the pressure water which flows through the piping 4 at the time of a fire may not leak outside.

The fire extinguisher liquid 20 is a solution (stock solution) of a chemical substance having an action to suppress the reaction of combustion, for example, a commercially available product (trade name: Fire Ade 2000, manufactured by Fire Service Plus) can be used.

The thin tube 13 supplies the extinguishing agent liquid 20 in the main body 11 into the pipe 4. The narrow tube 13 is formed in a cylindrical shape having the same tube diameter (inner diameter and outer diameter) at any location, and the lower end of the narrow tube 13 is located in the extinguishing agent liquid 20 at the bottom of the main body 11. The upper end of the narrow tube 13 is disposed in the pipe 4.

Specifically, the thin tube 13 has an outer diameter (for example, 3 to 5 mm) sufficiently smaller than the inner diameter (for example, 15 to 25 mm) of the pipe 4 and protrudes to the vicinity of the center position of the cross section of the pipe 4. With such a shape, when pressure water flows from the water distribution pipe 9 into the pipe 4 at the time of a fire, a negative pressure is generated by the venturi effect in proportion to the force of the water flow, and the extinguishing agent liquid 20 is sucked up from the upper end. The fire extinguisher solution 20 sucked up is discharged into the pipe 4 from the opening 13a at the upper end.

In addition, the narrow tube 13 discharges the fire-extinguishing agent solution 20 into the pipe 4 through the thin tube 13 without countering the pressure water flowing in the pipe 4, so that the opening 13 a of the opening 13 a at the upper end is sprinkled in the pipe 4. It arrange | positions so that it may face 2 side.

Here, the flow rate of the pressure water increases near the upper end of the narrow tube 13 as the water pressure of the pressure water flowing in the pipe 4 decreases near the upper end of the narrow tube 13 as compared with other places. Therefore, the ratio (discharge amount per unit time) of the extinguishing agent liquid 20 discharged from the narrow tube 13 into the pipe 4 is further increased due to the negative pressure. Further, as the ratio of the thin tube 13 occupying the cross section of the pipe 4 increases, the pressure near the upper end of the thin tube 13 decreases and the flow rate of the pressure water increases. For this reason, in order to discharge the extinguishing agent liquid 20 from the narrow tube 13 at a desired ratio, for example, the narrow tube 13 may be formed in the pipe 4 so that the pipe diameter becomes large.

On the other hand, in the present embodiment, if the concentration of the extinguishing agent solution 20 in the extinguishing solution obtained by mixing the extinguishing agent solution 20 and the pressure water in the pipe 4 is about 1%, it is effective in the fire extinguishing performance. In order to make the concentration of the extinguishing agent solution 20 in the extinguishing aqueous solution about 1%, the tube diameter is formed to be constant because the diameter of the narrow tube 13 does not need to be increased in the piping 4.

However, since the inner diameter of the pipe 4 and the flow rate and flow velocity of the pressure water flowing through the pipe 4 vary depending on the location where the fire extinguishing vessel 6 is installed (where the sprinkler fire extinguishing equipment 1 is introduced), the extinguishing agent discharged from the narrow tube 13 into the pipe 4 It is desirable that the ratio of the liquid 20 can be easily adjusted.

On the other hand, first, in the fire extinguishing container 6 of the present embodiment, the thin tube 13 is formed in an L shape and is bent and arranged on the sprinkler 2 side in the vicinity of the center position of the cross section of the pipe 4. As the length of the narrow tube 13 increases, the resistance in the direction opposite to the direction in which the extinguishing agent liquid 20 flows in the narrow tube 13 generally increases. Therefore, by preparing a long thin tube 13 in advance and shortening the thin tube 13 according to the environment of the place where the fire extinguishing container 6 is installed, the ratio of the extinguishing agent solution 20 discharged from the thin tube 13 into the pipe 4 is gradually increased. Can be increased.

On the other hand, it is desirable that the length of the narrow tube 13 in the pipe 4 is as large as possible from the viewpoint of increasing the reliability with which the extinguishing agent liquid 20 can be discharged to the sprinkler 2 side.
On the other hand, in the fire-extinguishing container 6 of this embodiment, the opening part 13a in the upper end of the thin tube 13 is cut | disconnected diagonally. The larger the cross-sectional area of the opening 13a, the greater the water pressure at the opening 13a of the extinguishing agent liquid 20 flowing in the narrow tube 13 than the water pressure of the pressure water (or fire-extinguishing aqueous solution) flowing around the pipe 4. Therefore, by cutting the upper end in advance so that the cross-sectional area of the opening 13a becomes large according to the environment of the place where the fire extinguishing container 6 is installed, the extinguishing agent liquid 20 discharged into the pipe 4 from the thin tube 13 The ratio can be increased.

<Operation>
In the sprinkler fire extinguishing equipment 1 configured as described above, when the fire receiver 7 detects the occurrence of a fire based on the received signal from the sensor 3 that senses at least one of heat and smoke, the electromagnetic valve control panel 8 By opening the water supply path by driving the electromagnetic valve 5 provided between the water distribution pipe 9 and the pipe 4, the pressure water flows into the pipe 4.

Then, as shown in FIG. 3A, in the fire extinguisher 6, a negative pressure is generated by the venturi effect in proportion to the force of the water flow in the pipe 4, and the fire extinguisher liquid 20 is sucked up from the upper end of the thin tube 13 and sucked up. The fire extinguisher liquid 20 thus discharged is discharged into the pipe 4 from the opening 13 a of the narrow tube 13.

Moreover, since the inside of the main-body part 11 and the piping 4 of the fire-extinguishing container 6 is connecting, as shown to FIG. 3B, in the fire-extinguishing container 6, the pressure water in the piping 4 flows into the inside of the main-body part 11. Then, the pressure water pushes down the surface of the extinguishing agent liquid 20 in the main body 11, thereby expelling the extinguishing agent liquid 20 from the lower end of the narrow tube 13 toward the upper end and piping from the opening 13 a of the narrow tube 13. The discharge of the extinguishing agent liquid 20 into the 4 is promoted.

And the fire extinguisher liquid 20 supplied in the piping 4 in this way is mixed with pressure water, so that a solution (extinguishing aqueous solution) in which the fire extinguisher liquid 20 is diluted at a predetermined concentration (for example, about 1%) is created. Then, the sprinkler supplied with water from the pipe 4 sprays the fire-extinguishing aqueous solution.

As described above, the sprinkler fire extinguishing equipment 1 according to the present embodiment is provided with a fire extinguishing container 6 that contains a fire extinguisher liquid 20 and water that flows into the pipe 4 when the electromagnetic valve 5 is driven to open the water supply path. Therefore, the volume of the fire-extinguishing container 6 and the weight of the fire-extinguishing agent liquid 20 can be suppressed, so that the fire-extinguishing aqueous solution can be suitably sprayed with a simple configuration. .

Moreover, in the sprinkler fire extinguishing equipment 1, the tube diameter of the narrow tube 13 in the fire extinguishing container 6 is constant, the opening 13a at the upper end of the narrow tube 13 is formed in an L shape so as to face the sprinkler 2, and the opening 13a Is cut obliquely, a fire extinguishing aqueous solution having a desired concentration can be created with a thin tube 13 having a simple configuration.

<Other embodiments>
As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, In the range which does not deviate from the summary of this invention, it is possible to implement in various aspects. Further, configurations obtained by appropriately combining different embodiments are also included in the scope of the present invention. In the following, another embodiment of the present invention will be described.

In the fire extinguishing container 6 of the above-described embodiment, the thin tube 13 is formed in an L shape, but is not limited thereto, and may be formed in a straight line, for example. Moreover, although the opening part 13a of the upper end in the thin tube 13 is arrange | positioned so that it may face the sprinkler 2 side in the piping 4, it is not restricted to this, For example, even if it arrange | positions so that it may face the upper surface side of the piping 4, Good.

Further, the sprinkler fire extinguishing equipment 1 of the above embodiment has a structure in which the inside of the main body 11 of the fire extinguishing container 6 and the pipe 4 communicate with each other, but is not limited thereto. For example, a movable plate for pushing down the extinguishing agent liquid 20 when pressure water flows into the main body 11 from the pipe 4 may be disposed, or the main body 11 of the fire extinguishing container 6 is completely closed. Thus, a configuration in which the thin tube 13 only sucks up the extinguishing agent liquid 20 by the above-described venturi effect may be employed.

In addition, the whole structure in the sprinkler fire extinguishing equipment 1 of the said embodiment is an example for demonstrating this invention to the last, The fire extinguishing container of this invention can be applied to the sprinkler fire extinguishing equipment which has various structures.

For example, in the sprinkler fire extinguishing equipment 1 of the above embodiment, the fire receiver 7 and the electromagnetic valve control panel 8 are separate components, but may be configured integrally.

Claims

In the event of a fire based on a received signal from a sensor that senses at least one of heat and smoke, the water supply path opens a solenoid valve that shields the water supply path from the filled water distribution pipe to the pipe communicating with the sprinkler The sprinkler fire extinguishing equipment in which the sprinkler supplied from the water distribution pipe through the pipe is sprinkled by being driven as described above,
A fire extinguishing container that is attached to the lower surface side of the pipe and contains a fire extinguisher liquid,
The fire extinguishing container has a narrow tube in which a lower end is disposed in the fire extinguisher liquid and an upper end is disposed in the pipe,
When the water flows from the water distribution pipe into the pipe, the narrow pipe generates a negative pressure due to the venturi effect, and the fire extinguisher liquid is sucked up from the upper end so that the fire extinguisher liquid can be supplied into the pipe. Sprinkler fire extinguishing equipment characterized by having a shape.
The sprinkler fire extinguishing equipment according to claim 1, wherein the narrow tube is arranged so that the opening at the upper end faces the sprinkler side in the pipe.
The sprinkler fire extinguishing equipment according to claim 2, wherein the narrow tube is formed in an L shape.
The sprinkler fire extinguishing equipment according to claim 2 or 3, wherein the narrow tube has a constant tube diameter, and an opening at the upper end is cut obliquely.
The said fire-extinguishing container has an attachment port to the said pipe | tube so that water may flow in from the said pipe | tube and the said extinguishing agent liquid may be pushed down, The any one of Claim 1 thru | or 4 characterized by the above-mentioned. The sprinkler fire extinguishing equipment described in 1.
In the event of a fire based on a received signal from a sensor that senses at least one of heat and smoke, the water supply path opens a solenoid valve that shields the water supply path from the filled water distribution pipe to the pipe communicating with the sprinkler In the sprinkler fire extinguishing equipment in which the sprinkler supplied with water from the water pipe through the pipe is sprinkled, it is attached to the lower surface side of the pipe and is a fire extinguisher container that contains a fire extinguisher liquid.
A lower end is disposed in the fire extinguishing agent liquid, and an upper end is disposed in the pipe.
When the water flows from the water distribution pipe into the pipe, the narrow pipe generates a negative pressure due to the venturi effect, and the fire extinguisher liquid is sucked up from the upper end so that the fire extinguisher liquid can be supplied into the pipe. A fire extinguishing container having a shape.