TWI397434B - Fire disaster prevention equipment - Google Patents

Description

Fire disaster prevention equipment Field of invention

The present invention relates to a fire prevention and disaster prevention device that discharges water-based fire extinguishing agent particles containing water, sea water, and fire-extinguishing agent from a water head.

Background of the invention

In the past, such water fire disaster prevention equipment included sprinkler fire extinguishing, water spray fire extinguishing equipment or fine water mist fire extinguishing equipment, especially in comparison with sprinkler equipment or water spray equipment, the fine water mist fire extinguishing equipment narrowed the water particles. The number is 20 μm to 200 μm and is released toward the space, whereby the fire-extinguishing effect under a small amount of water is expected by the cooling effect and the hindrance effect of the oxygen supply by the evaporated water.

In recent years, sprinkler fire extinguishing equipment and water spray fire extinguishing equipment or micro water mist fire extinguishing equipment used as fire extinguishing agent are compared with environmental fire extinguishing agents such as carbon dioxide or sea dragon. And water as a fire extinguishing agent, so it is a reassessment.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. Hei 11-192320

[Patent Document 2] JP-A-10-118214

Invention

However, in the conventional sprinkler fire extinguishing equipment or water spray fire extinguishing equipment, those with high fire extinguishing ability are generally recognized. However, in order to ensure the fire extinguishing ability, the amount of radiated water will increase, and the water immersion during fire extinguishing and after fire extinguishing will be reduced. Disasters will become a problem.

On the other hand, in the fine water mist fire extinguishing equipment with less water immersion disaster, the space is filled with smaller water particles and the cooling effect and the oxygen supply by the evaporating water are hindered. However, the actual situation is the fire extinguishing ability. Not too high.

In order to solve such a problem, the inventors have disclosed a fire disaster prevention device that charges a fire extinguishing agent particle dispersed from a water head in a fire, whereby the Coulomb force acting on the fire extinguishing agent particle can be utilized to improve the combustion product. The high-extinguishing effect is obtained by the wetting effect, and the effect of the collection by the Coulomb force of the particles of the fire-extinguishing agent by the smoke generated by the fire can be improved, and the smoke-removing effect can be improved (Japanese Patent No. 2007-279865).

When the fire extinguishing dose used is fixed, the particle diameter of the fire extinguishing agent is the smallest particle diameter that does not immediately evaporate and extinguish in the fire chamber environment. The fire extinguishing effect and the smoke eliminating effect are higher. The smaller the particle diameter, the more the Coulomb force will be attached to the combustible material, or the smaller the particle diameter, the larger the particle concentration (the number of particles in the unit space), and the distance between the smoke particles and the fire extinguishing agent particles will be Reduce the size and increase the collection effect using Coulomb force.

On the other hand, the smaller the extinguishing agent particles become, the more difficult it is to disperse the fire extinguishing agent particles in the entire protective area. For example, in the scattering head of water particles having a particle diameter of 200 μm at a water pressure of 1 MPa, the water particles are approximately At the beginning of 23 m/s, the speed is released from the water head. However, for example, in the lateral direction, the flight distance of about 1 m or less may be stalled due to air resistance.

Therefore, in order to spread the small particle diameter fire extinguishing agent to the entire protection area, for example, a large number of heads must be arranged on the top surface with a small head spacing, and there may be a cost due to the large number of heads. It is a problem with the lighting, etc., even because of the large number of piping used to supply the fire extinguishing agent to the water head.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fire prevention and disaster prevention apparatus which can extend the flight distance of the fire extinguishing agent particles which are electrically dispersed from the water head to ensure a wide range of protection.

The present invention relates to a fire disaster prevention device, which comprises: a fire extinguishing agent supply device, which is supplied with a water-based fire extinguishing agent via a pipe; a charged diffusing water head is disposed in a protective area, and is pressurized by a fire extinguishing agent supply device. The radiation agent of the water-based fire extinguishing agent is charged and distributed; and the voltage application unit applies the charged voltage to the charged diffusing head of the charged dispersion, and the charged diffusing head includes: a water head structure, which is a radiation water fire extinguishing agent, Further, the water-based fire extinguishing agent is mixed with a smaller particle diameter and a larger particle diameter included in a predetermined particle diameter range.

Here, the water-spraying water-based fire extinguishing agent is charged and dispersed, and the water-based fire extinguishing agent is mixed with a small particle diameter and a large particle diameter in a range of 30 μm to 2000 μm.

Further, the charged diffusing head includes: a small particle diameter water head, a water-based fire extinguishing agent having a radiation average particle diameter ranging from 30 μm to 200 μm; and a large particle diameter water head having a radiation average particle diameter of 200 μ to 2000 μm. A range of water-based fire extinguishers.

The charged diffusing head unit arranges the small particle water head and the large particle water head in the lateral direction and is adjacent to each other, and the small particle diameter water head includes: a small particle jet nozzle which is sprayed toward the external space by the water-based fire extinguishing agent. The particles are converted into particles having a small particle diameter and dispersed; the water flow is circumsed by a neutron, and the water supplied to the injection nozzle is wound; the induction electrode portion is disposed on the injection space side of the injection nozzle; and the water-side electrode portion is It is disposed inside the spray nozzle and is in contact with the water-based fire extinguishing agent. Further, the large particle diameter water head includes: a large particle spray nozzle which is converted into particles of a large particle diameter by spraying the water-based fire extinguishing agent toward the external space. And the scatterer is used to swirl the water flowing through the spray nozzle; the induction electrode portion is disposed on the injection space side of the spray nozzle; and the water-side electrode portion is disposed inside the spray nozzle In contact with the water-based fire extinguishing agent, the voltage application portion is applied between the sensing electrode portion and the water-side electrode portion of the small particle diameter water head and the large particle diameter water head. External electric field arising from pressure by the injection nozzle small particles and the large particles in an aqueous spray nozzle is applied to the injection of the fire extinguishing agent charged spray particles.

The charged diffusing head includes a small particle jet nozzle which is sprayed into an external space by a water-based fire extinguishing agent and is converted into particles having a small particle diameter to be dispersed; the large particle jet nozzle is disposed coaxially with the small particle jet nozzle. The outer side is sprayed into the outer space by the water-based fire extinguishing agent, and is converted into particles having a large particle diameter to be dispersed; the water stream is swirled by the neutron, and the water is supplied to the small particle diameter spray nozzle; the water flow is spiraled The water flow is supplied to the large particle diameter spray nozzle; the induction electrode portion is disposed on the injection space side of the injection nozzle; and the water side electrode portion is disposed on the inflow side of each injection nozzle and the water fire extinguishing agent. In the contact, the voltage application unit applies an external electric field generated by applying a voltage between the sensing electrode portion and the water-side electrode portion, and is applied to the water-based fire extinguishing agent in the spraying process by the small particle jet nozzle and the large particle jet nozzle. The jet particles are charged.

The charged diffusing head comprises: a large particle diameter jet nozzle which is sprayed into a large space by means of a water-based fire extinguishing agent sprayed toward an external space; and the small particle jet nozzle is coaxial with the large particle diameter spray nozzle. Disposed on the outside, and sprayed into the outer space by the water-based fire extinguishing agent, and converted into particles of small particle diameter to be dispersed; the water flow is circumsed by the neutron, and the water is supplied to the large particle diameter spray nozzle; the water is swirled The spiral is used to swirl the water supplied to the small particle diameter injection nozzle; the induction electrode portion is disposed on the injection space side of the injection nozzle; and the water side electrode portion is disposed on the inflow side of each injection nozzle and the water system In addition, the voltage application unit applies an external electric field generated by a voltage applied between the sensing electrode portion and the water-side electrode portion, and is applied to the spraying process by the small particle ejection nozzle and the large particle ejection nozzle. The water-based fire extinguishing agent charges the sprayed particles.

The charged diffusing head includes: a rotary jet nozzle which is rotated by spraying of a water-based fire extinguishing agent toward an external space; a small particle nozzle slit is attached to the opening of the rotary jet nozzle, and is sprayed toward the external space by the water-based fire extinguishing agent. The particles are converted into particles having a small particle diameter and dispersed; the large particles are sprayed into the opening of the rotary jet nozzle by a nozzle slit, and are sprayed into the outer space by the water-based fire extinguishing agent, and are converted into particles having a large particle diameter to be dispersed. The sensing electrode portion is disposed on the injection space side of the injection nozzle; and the water-side electrode portion is disposed on the inflow side of the rotary injection nozzle to contact the water-based fire extinguishing agent, and the voltage applying portion is driven by the sensing electrode The external electric field generated by applying a voltage between the portion and the water-side electrode portion is applied to the water-based fire extinguishing agent in the spraying process by the small-particle nozzle slit and the large-particle nozzle slit to charge the ejection particles.

The charged diffusing head is such that the fire extinguishing agent particles contained in the predetermined particle diameter range are positively or negatively charged.

According to the present invention, by self-charged water-spraying head, the water-based charged fire extinguishing agent particle group having a smaller particle diameter and a larger particle diameter in a range of a predetermined particle diameter, for example, 30 μm to 2000 μm, is mixed and mixed, and can be utilized. The air convection of a large fire extinguishing agent particle group with a large flying particle diameter in the range of 200μ to 2000μm, and the small particle diameter fire extinguishing agent particle group with an average particle diameter of 30μm to 200μm with high fire extinguishing effect and high smoke eliminating effect To the broad scope.

In the dispersion of the fire extinguishing agent particle group having a larger particle diameter of, for example, 1000 μm to 2000 μm, even a lower pressure of about 0.1 Mp can be easily spread to a range of about 4 m, and the scattering type can be seen at the time of the scattering. The air convection. By transporting a small group of fire extinguishing agent particles by the convection, a small group of fire extinguishing agent particles can be spread to a wide range simultaneously with a large group of fire extinguishing agent particles, and the size can be extinguished by a small number of water heads. The particle group of the agent is dispersed to the entire protective area.

In addition, in the case of an initial fire (small fire), a sufficient fire extinguishing effect can be obtained by a small particle diameter fire extinguishing agent particle group. However, when an arson fire such as kerosene or gasoline is used, it sometimes suddenly becomes large-scale. The fire started. Such a fire generates a large amount of heat, and it is necessary to put a large amount of fire extinguishing agent (water) into the fire. Extinguishing agents with large particle diameters have the effect of weakening the fire for such fires. However, it is not easy to extinguish the fire in the subsequent flames that continue to burn in a small gap, or the fire that forms part of the back (dead corner) of the head. On the other hand, the small fire extinguishing agent particles have the effect of being wetted by the Coulomb force surrounding the gaps or the back portions, and extinguishing the fire, and by the interaction, high fire extinguishing performance can be obtained even in the case of a fire or the like.

Further, by making the small particles of the fire extinguishing agent and the large particles of the fire extinguishing agent simultaneously positively charged or negatively charged, the aggregation of the fire extinguishing agent small particles and the fire extinguishing agent large particles in the scattering space can be prevented from occurring.

Simple illustration

Fig. 1 is an explanatory view showing an embodiment of a fire prevention and disaster prevention apparatus according to the present invention.

Fig. 2 is an explanatory view showing the drawing of the protective zone A of Fig. 1 .

3(A) to 3(C) are views showing the first embodiment of the charged dispersion head according to the present invention.

4(A) to 4(C) are views showing a second embodiment of the charged dispersion head according to the present invention.

5(A) to 5(C) are views showing a third embodiment of the charged dispersion head according to the present invention.

6(A) to 6(C) are views showing a fourth embodiment of the charged dispersion head according to the present invention.

Detailed description of the preferred embodiment

Fig. 1 is an explanatory view showing an embodiment of a fire prevention and disaster prevention apparatus according to the present invention. In the first embodiment, the charging and dispensing head 10 according to the present embodiment is disposed on the top side of the protective area A and the protective area B, such as a computer room, in the building.

The pipe 16 is connected to the charging/distributing head 10 via a manual valve (separating valve) 13 from the protruding side of the pump unit 12 provided with the water source 14 having the function as the fire extinguishing agent supply device, and the pipe 16 is tied to the branch. The pressure valve 30 and the automatic opening and closing valve 32 are connected to the charging and dispensing heads 10 respectively disposed in the protection zone A and the protection zone B.

In the protection zone A and the protection zone B, respectively, a special fire sensor 18 for controlling the distribution from the charged distribution head 10 is provided, and a linkage control relay device 20 is respectively disposed for the protection zone A and the protection zone B, and is further provided for The manual operation box 22 from the dispersion control of the charged dispersion head 10 is performed by manual operation.

The linkage control relay device 20 connects the signal lines from the dedicated fire sensor 18 and the manual operation box 22, and simultaneously pulls out the signal line for applying the voltage for the electrification drive to the charged distribution head 10 and automatically controls the switch. The signal line of the switching valve 32.

Further, a fire sensor 26 of the automatic fire notification device is provided in the protection zone A, and is connected to the sensor circuit of the receiver 28 from the automatic fire notification device. In addition, the fire zone sensor 26 of the automatic fire notification device is not provided in the protection zone B, however, it can of course be set as needed.

The interlocking control relay device 20 corresponding to the protection zone A and the protection zone B is connected to the system monitoring control panel 24, and the system monitoring control panel 24 is also connected to the receiver 28 of the automatic fire notification device. Further, the system monitor control panel 24 connects the pump unit 12 to the signal line, and controls the pump in the pump unit 12 to start and stop.

Fig. 2 is an explanatory view showing the drawing of the protective zone A of Fig. 1 . A charging/distributing head 10 is provided on the top plate side of the protection zone A, and the piping 16 from the pump unit 12 shown in Fig. 1 is connected to the charging/distributing head 10 via the pressure regulating valve 30 and the automatic opening and closing valve 32.

Further, a voltage applying portion 15 is provided on the upper portion of the charging/distributing water head 10, and as will be described later, it can be understood that a predetermined voltage is applied to the charging and dispensing head 10, and the fire extinguishing agent sprayed from the charging and dispensing head 10 is charged. spread. Further, a dedicated fire sensor 18 is disposed on the top plate side of the protection zone A, and a fire sensor 26 of the automatic fire notification device is also connected.

Fig. 3 is a first embodiment of the charged dispersion head 10 shown in Figs. 1 and 2, and the third (A) diagram is a section, and the third (B) diagram is seen from the lower plane, and the third (C). The system extracts and displays the sensing electrodes.

In the third (A) diagram, the charged dispersion head 10 is composed of a small particle water head 10A and a large particle water head 10B, and is arranged adjacent to each other in the lateral direction. The charged water-spraying head 10 is a radiation water-based fire extinguishing agent, and the water-based fire extinguishing agent is mixed with a small particle diameter and a large particle diameter included in a predetermined particle diameter range. For example, the charged water-spraying head 10 is a radiation water-based fire extinguishing agent, and The water-based fire extinguishing agent is mixed with a smaller particle diameter and a larger particle diameter in the range of 30 μm to 2000 μm.

Among them, the small particle water head 10A is a fire extinguishing agent particle group having a radiation average particle diameter in the range of 30 μm to 200 μm, and the large particle diameter water head 10B is a fire extinguishing agent particle group having a radiation average particle diameter in the range of 200 μ to 2000 μm.

The structure of the small particle water head 10A is as follows. In the small-particle water head portion 10A, the head main body 36a is twisted and fixed to the front end of the descending pipe 34a connected to the pipe from the pump unit 12, and the cylindrical water-side electrode portion 40a is fitted into the head body via the insulating member 41a. The inner side of the front end of 36a.

As shown in Fig. 2, the water-side electrode portion 40a is pulled out from the voltage applying portion 15 provided at the upper portion, and is connected to the water-side electrode portion 40a provided inside the head body 36a via the insulating member 41a. . By the connection of the ground cable 50a, the water-side electrode portion 40a is applied with a voltage of 0 volts and is lowered to the ground side.

A small particle ejection nozzle 38a is provided on the lower side of the water-side electrode portion 40a, and the small particle ejection nozzle 38a is a water flow winding neutron 37a provided inside the water-side electrode portion 40a side and a nozzle tip provided on the front end side. The composition of 39a.

The small particle injection nozzle 38a receives the supply of the water-based fire extinguishing agent supplied from the pump unit 12 of Fig. 1 from the descending pipe 34a, and when the nozzle body 39a is ejected from the nozzle head 39a to the outside through the head body 36a, the water-based fire extinguishing agent is converted. Dispersion is carried out by forming small particles having an average particle diameter in the range of 30 μm to 200 μm. In the present embodiment, the scattering pattern dispersed from the small particle ejection nozzle 38a has a so-called full cone shape.

The insulating material outer cover 42a is fixed by screws, and is fixed to the small particle injection nozzle 38a via the fixing member 43a. The outer cover 42a is a substantially cylindrical member, and is fixed by a screw of the ring 46a, and the annular sensing electrode portion 44a is fitted into the lower opening.

As shown and described in Fig. 3(C), the sensing electrode portion 44a is formed in the center of the annular body to form an opening 54a through which the ejection particles from the small particle ejection nozzle 38a pass.

The electrode application wire 48a is pulled out from the voltage application portion 15 at the upper portion shown in Fig. 2, and the electrode application cable 48a is formed of an insulating material. 42a is connected to the sensing electrode portion 44a, and a voltage can be applied.

Here, in the water-side electrode portion 40a and the induction electrode portion 44a of the charging and dispensing head 10 of the present embodiment, in addition to the conductive metal, it may be a conductive resin and have conductivity. Rubber, in addition, may also be a combination of these.

When the water-based fire extinguishing agent is dispersed from the small particle water head 10A, the voltage applying unit 15 shown in Fig. 2 is operated by the control signal from the interlocking control relay device 20 shown in Fig. 1, and the water-side electrode is operated. The portion 40 is formed on the ground side of 0 volts, and applies a direct current, an alternating current or a pulsed applied voltage of, for example, not more than 20 kV to the sensing electrode portion 44a.

According to this, when a voltage of several thousand volts is applied between the water-side electrode portion 40a and the sensing electrode portion 44a, an external electric field can be generated between the electrodes by the voltage application, and the water-based fire extinguishing agent can be ejected from the small particles. The nozzle 38a is converted into a jetting process of ejecting small particles having an average particle diameter in the range of 30 μm to 200 μm, charging the ejected small particles, and spreading the charged small particles to the outside.

The structure of the large particle water head 10B is substantially the same as that of the small particle water head 10A, however, it is different in the fire extinguishing agent particle group having a radiation average particle diameter in the range of 200 μ to 2000 μm.

In other words, the large-particle water head portion 10B twists and contracts the water head main body 36b to the front end of the descending pipe 34b connected to the pipe from the pump unit 12.

On the head body 36b, the pressure restricting orifice 55 is provided on the inner side, and by passing through the pressure restricting orifice 55, the water pressure in the nozzle head 39a is largely lowered, and the injection of a large particle diameter can be obtained. The cylindrical water-side electrode portion 40b is fitted into the front end of the front end of the head body 36b via the insulating member 41b.

As shown in Fig. 2, the water-side electrode portion 40b is pulled out from the voltage applying portion 15 provided at the upper portion, and is connected to the water-side electrode portion 40b provided inside the head body 36b via the insulating member 41b. . By the connection of the ground cable 50b, the water-side electrode portion 40b is made to have a voltage of 0 volts and is lowered to the ground side.

The large particle injection nozzle 38b is provided on the lower side of the water side electrode portion 40b, and the large particle injection nozzle 38b is a water flow winding neutron 37b provided inside the water side electrode portion 40b side and a nozzle head provided on the front end side. The composition of 39b.

The large particle injection nozzle 38b receives the supply of the water-based fire extinguishing agent supplied from the pump unit 12 of Fig. 1 from the descending pipe 34b, and is sprayed from the nozzle head 39b to the outside through the pressure restricting orifice 55 through the head main body 36b. The water-based fire extinguishing agent is converted into large particles having an average particle diameter in the range of 200 μm to 2000 μm and dispersed. In the present embodiment, the scattering pattern dispersed from the large particle ejection nozzle 38b has a so-called full cone shape.

The insulating material outer cover 42b is fixed by screws, and is fixed to the large particle injection nozzle 38b via the fixing member 43b. The outer cover 42b is a substantially cylindrical member, and is fixed by a screw of the ring 46b, and the annular sensing electrode portion 44b is fitted into the lower opening.

As shown and described in the third (C) diagram, the sensing electrode portion 44b is formed in the center of the annular body to form an opening 54b through which the ejection particles from the large particle ejection nozzle 38b pass.

The electrode application wire 48b is pulled out from the voltage application portion 15 at the upper portion shown in Fig. 2, and the electrode application cable 48b is formed of an insulating material. 42b is connected to the sensing electrode portion 44b, and a voltage can be applied.

Here, the water-side electrode portion 40b and the induction electrode portion 44b of the charged-dispersing water head 10 of the present embodiment may be made of a conductive resin or a conductive resin in addition to a conductive metal. Rubber, in addition, may also be a combination of these.

When the water-based fire extinguishing agent is dispersed in the large particle water head 10B, the voltage applying unit 15 shown in Fig. 2 operates by a control signal from the interlocking control relay device 20 shown in Fig. 1, and the water-side electrode is provided. The portion 40b is formed on the ground side of 0 volts, and applies a direct current, an alternating current or a pulsed applied voltage of, for example, not more than 20 kV to the ring-shaped sensing electrode portion 44b.

According to this, when a voltage of several thousand volts is applied between the water-side electrode portion 40b and the sensing electrode portion 44b, an external electric field can be generated between the electrodes by the application of the voltage, and the water-based fire extinguishing agent can be ejected from the large particles. The nozzle 38b is converted into a jetting process of ejecting large particles having an average particle diameter in the range of 200 μm to 2000 μm, charging the ejected large particles, and spreading the charged large particles that have been charged to the outside.

Since the small particle group of the fire extinguishing agent using the small particle water head 10A is simultaneously mixed with the spraying system of the large particle group of the fire extinguishing agent of the large particle water head 10B, it is used in the range of 200 μm to 2000 μm. The spread pattern of the large particle group of the fire extinguishing agent generates convection of air, and by the convection of the air, transports a small particle group of the fire extinguishing agent in the range of 30 μm to 200 μm, and can simultaneously be combined with the large particle group of the fire extinguishing agent The small particle group of the fire extinguishing agent is spread to a wide range, and at the same time, the small amount of the fire extinguishing agent mixed with small particles and large particles can be spread to the entire protection area by a small amount of charged water head 10 .

For example, the dispersion of the fire extinguishing agent particle group using the large particle water head 38b can be lowered to a pressure of, for example, about 0.1 Mp by the pressure limiting orifice 55 even when a pressure of about 1.0 Mp is supplied. The particle diameter of the fire extinguishing agent constitutes a large particle diameter of 1000 μm to 2000 μm and can be spread to a range of four meters, and can be convected by the spread of a large particle group of such an extinguishing agent, from the small particle water head 38a. Similarly, a small fire extinguishing agent particle group of 30 μm to 200 μm dispersed at a pressure of about 1.0 Mp is surely spread over a wide range of four meters.

Next, the monitoring operation in the embodiment of Fig. 1 will be described. When a fire F occurs in the protection zone A, for example, the dedicated fire sensor 18 detects a fire and transmits a fire detection signal to the system monitoring control panel 24 via the interlocking control relay device 20.

If the system monitoring control panel 24 receives the report of the dedicated fire sensor 18 disposed in the protection zone A, the pump unit 12 is started, and the fire extinguishing water is taken from the water source 14 and pressurized by the pump unit 12, and supplied to the pipe 16 .

At the same time, the system monitor control panel 24 outputs a start signal for outputting the charged spread head 10 to the interlock control relay device 20 disposed corresponding to the guard zone A. Upon receiving the start signal, the interlocking control relay device 20 opens the automatic opening and closing valve 32, whereby the water-based fire extinguishing agent having a certain pressure regulated by the pressure regulating valve 30 is supplied through the open automatic opening and closing valve 32. The charged head 10 is charged and discharged, and as shown and shown in FIG. 2, the self-charged water head 10 is sprayed to the protective zone A by the sprayed particles.

At the same time, the interlocking control relay device 20 transmits a start signal to the voltage application unit 15 provided in the charging/distributing water head 10 shown in FIG. 2, and receives the start signal, and the voltage applying unit 15 supplies the charging water head 10 to, for example, a configuration. A few thousand volts of direct current, alternating current or a pulsed applied voltage.

Therefore, in the charged dispersion head 10 shown in Fig. 3(A), the large particle injection nozzle 38a and the large particle injection nozzle 38b of the large particle water head 10B are respectively pressurized from the small particle water head 10A. When the water-based fire extinguishing agent is converted into the sprayed particles and dispersed, the water-side electrode portion 40a and the water-side electrode portion 40b to which the ground cable 50a and the ground cable 50b are connected can be made 0 volts, and the voltage application cable 48a and the voltage application can be connected thereto. A voltage of several thousand volts is applied to the side of the sensing electrode portion 44a and the sensing electrode portion 44b of the cable 48b, and an external electric field generated by the application of the voltage is applied to the ejection from the small particle ejection nozzle 38a and the large particle ejection nozzle 38b. On the other hand, the water-based fire extinguishing agent in the process of injecting the electrode portion 44a, the opening 54a of the sensing electrode portion 44b, and the opening 54b, and the small particles of the fire-extinguishing agent which have been converted by the spraying are mixed with the large particles of the fire-extinguishing agent, and then dispersed.

As shown and drawn in Fig. 2, the self-charged water head 10 spreads a large particle group of the fire extinguishing agent in the protective zone A where the fire F occurs, and at the same time, by using a large particle group of 200 μm to 2000 μm of the fire extinguishing agent, especially 1000 μm to The convection of air generated by the large particle group of 2000 μm of large fire extinguishing agent can transport a small particle group of fire extinguishing agent of 30 μm to 200 μm and can be surely spread to a wide range.

Moreover, since the small particle group of the fire extinguishing agent of 30 μm to 200 μm is charged, it can be effectively adhered to the high-temperature combustion source of the fire F by utilizing the charged Coulomb force, and at the same time, the entire adhesion to the combustion agent is generated, compared with the conventional one. Dispersing non-charged water particles can greatly increase the wetting effect on the combustion agent and exert high fire-extinguishing ability.

Moreover, by spreading a large particle group of fire extinguishing agents, it is possible to reduce the fire of a fire that suddenly starts from a large-scale fire, such as the use of kerosene or gasoline, and to utilize the small particle group of the fire extinguishing agent dispersed at the same time. Wet effect and high fire extinguishing ability.

Further, in the small particle water head portion 10A and the large particle water head portion 10B of the third (A) diagram, for example, the water side electrode portion 40a and the water side electrode portion 40b are made 0 volts, and the pair of rings When the positive sensing electrode portion 44a and the annular sensing electrode portion 44b are applied with a positive voltage in a pulsed manner, the dispersed water particles constitute a distribution with only a negative charge.

Accordingly, when the small particles of the negatively charged extinguishing agent and the large particles of the fire extinguishing agent are mixed and dispersed, the repulsion acts on the charged water particles in the space, whereby the probability of the water particles colliding and growing and falling down will occur. The density of water particles which are reduced and retained in the space is increased, whereby high fire extinguishing ability can be exerted.

Further, in the protective zone A, by using the airflow generated by the spread of the large particle group of the fire extinguishing agent, the small amount of the fire extinguishing agent charged with the charged head 10 is dispersed and distributed, thereby effectively eliminating the cause. The smoke-eliminating effect of the smoke generated by the fire F.

Such a smoke suppressing effect in the present embodiment is a capturing action by the probability collision of water particles and smoke particles with respect to the smoke eliminating effect of the conventional water particle dispersion, and in the present embodiment, The dispersed water particles are charged, so that the water particles use the Coulomb force to collect the smoke particles that are also in the charged state, thereby exerting a large smoke absorbing effect.

Fig. 4 is a second embodiment of the charged diffusing head 10 shown in Figs. 1 and 2, and Fig. 4(A) is a cross section, and Fig. 4(B) is a plane from the lower side, 4th (C) The system extracts and displays the sensing electrodes.

In the fourth embodiment, the charged dispersion head 10 of the second embodiment is disposed coaxially with the small particle nozzle 38a constituting the small particle head and the large particle jet nozzle 38b constituting the large particle head.

In other words, the charging head 10 is configured to twist and fix the head body 36 to the front end of the descending pipe 34 connected to the pipe from the pump unit 12, and the cylindrical water-side electrode portion 40 is fitted into the head body via the insulating member 41. 36 inside the front end.

As shown in FIG. 2, the water-side electrode portion 40 is pulled out from the voltage applying portion 15 provided at the upper portion, and is connected to the water-side electrode portion 40 provided inside the head body 36 via the insulating member 41. . By the connection of the ground cable 50, the water-side electrode portion 40 is made to have a voltage of 0 volts and is lowered to the ground side.

A small particle injection nozzle 38a is provided on the lower side of the water-side electrode portion 40, and a large particle injection nozzle 38b is coaxially provided on the outer side thereof, and the small particle injection nozzle 38a is provided by a water flow winding neutron 37a provided inside and The nozzle head 39a is provided on the distal end side, and the large particle injection nozzle 38b is provided by a pressure restricting orifice 55 provided on the outer periphery of the nozzle head 39a located inside, a water flow winding spiral 56a, and a nozzle head 39b provided on the front end side. Composition.

As shown in Fig. 4(B), the small particle jet head 38a forms a small particle nozzle hole 58a downward, and the large particle jet head 38b forms an annular large particle nozzle opening 58b on the outer side.

The small particle injection nozzle 38a receives the supply of the water-based fire-extinguishing agent supplied from the pump unit 12 of Fig. 1 from the descending pipe 34, and when the nozzle body 39 is partially ejected from the nozzle head 39a to the outside through the head body 36, the water system is used. The fire extinguishing agent is converted into small particles having an average particle diameter in the range of 30 μm to 200 μm to be dispersed. In the present embodiment, the scattering pattern dispersed from the small particle ejection nozzle 38a has a so-called full cone shape.

The large particle injection nozzle 38b receives the supply of the water-based fire extinguishing agent supplied from the pump unit 12 of Fig. 1 from the descending pipe 34, and partially ejects it from the nozzle head 39b via the pressure restricting orifice 55 through the head body 36. When it is external, the water-based fire extinguishing agent is converted into large particles having an average particle diameter in the range of 200 μm to 2000 μm and dispersed. In the present embodiment, the scattering pattern dispersed from the small particle ejection nozzle 38a has a so-called full cone shape.

At this time, by using the air flow generated by the scattering of the large particle group of the fire extinguishing agent from the large particle nozzle opening 58b located outside, the small particle group of the fire extinguishing agent which has been dispersed from the small particle nozzle hole 58a located inside is transported, and The large particle group of the fire extinguishing agent simultaneously spreads the small particle group of the fire extinguishing agent to a wide range, and at the same time, the small amount of the fire extinguishing agent mixed with the small particles and the large particles can be dispersed to the entire protective area by a small amount of the charged head 10 .

The insulating material outer cover 42 is fixed by screws and fixed to the small particle ejection nozzle 38a via the fixing member 43. The outer cover 42 is a substantially cylindrical member, and is fixed by a screw of the ring 46, and the annular sensing electrode portion 44 is fitted into the lower opening.

As shown and described in Fig. 4(C), the sensing electrode portion 44 is formed in the center of the annular body to form an opening 54 through which the ejection particles from the small particle ejection nozzle 38a and the large particle ejection nozzle 38b pass.

The electrode application wire 48 is pulled out from the voltage application portion 15 at the upper portion shown in FIG. 2 with respect to the induction electrode portion 44 disposed at the lower portion of the outer cover 42, and the electrode application cable 48 is passed through the outer cover 42 made of an insulating material. It is connected to the sensing electrode portion 44 and is made to apply a voltage.

When the water-based fire extinguishing agent is dispersed from the small particle jet nozzle 38a and the large particle jet nozzle 38b, the voltage applying unit 15 shown in Fig. 2 operates by a control signal from the interlocking control relay device 20 shown in Fig. 1 . Further, the water-side electrode portion 40 is formed as a ground side of 0 volts, and a direct current, an alternating current, or a pulse-like applied voltage of, for example, not more than 20 kV is applied to the ring-shaped sensing electrode portion 44.

According to this, when a voltage of several thousand volts is applied between the water-side electrode portion 40 and the ring-shaped sensing electrode portion 44, an external electric field can be generated between the electrodes by the application of the voltage, and the water-based fire extinguishing agent is small. The particle jetting nozzle 38a is converted into a jetting process of ejecting small particles having an average particle diameter in the range of 30 μm to 200 μm to charge the ejected small particles while being converted into a mean particle diameter of 200 μm to 2000 μm from the large particle jetting nozzle 38b through the water-based fire extinguishing agent. The spraying process of spraying large particles in the range causes the large particles to be charged, and the small particle group of the fire extinguishing agent that has been charged is mixed with the large particle group of the fire extinguishing agent to be dispersed.

When the small particle jet nozzle 38a and the large particle jet nozzle 38b are disposed to be electrically distributed to the water head 10, the water head can be downsized and the installation space can be reduced as compared with the first embodiment in which the small particle jet nozzle 38a is disposed adjacent to the third embodiment. With cost.

Fig. 5 is a third embodiment of the charged dispersion head 10 shown in Figs. 1 and 2, and Fig. 5(A) is a cross section, and Fig. 5(B) is a plane from the lower side, 5th (C) The system extracts and displays the sensing electrodes.

In the fifth embodiment, the charged dispersion head 10 of the third embodiment is opposite to the second embodiment of the fourth embodiment, and the large particle injection nozzle 38b is disposed at the center, and small particles are coaxially disposed on the outer side thereof. The nozzle 38a is sprayed. The large particle jet nozzle 38b located at the center is constituted by a pressure restricting orifice 55 provided inside, a neutron 37b for water flow winding, and a nozzle head 39b provided on the tip end side, and the small particle jet nozzle 38a provided outside is borrowed. The water flow winding spiral 56b and the nozzle head 39a provided on the front end side are provided on the outer periphery of the nozzle head 39b positioned inside.

As shown in Fig. 5(B), the inner large particle jet head 38b forms a large particle nozzle hole 60b downward, and the outer small particle jet head 38a forms an annular small particle nozzle opening 60a on the outer side.

Since the other structures are the same as those of the second embodiment of Fig. 4, the same reference numerals are attached thereto, and the description thereof is omitted.

In the third embodiment of Fig. 5, the small particle injection nozzle 38a receives the supply of the water-based fire extinguishing agent supplied from the pump unit 12 of Fig. 1 from the descending pipe 34, and is partially supplied by the head body 36. When the nozzle head 39a is sprayed to the outside, the water-based extinguishing agent is converted into small particles having an average particle diameter of 30 μm to 200 μm to be dispersed.

At the same time, the large particle injection nozzle 38b receives the supply of the water-based fire extinguishing agent supplied from the pump unit 12 of Fig. 1 from the descending pipe 34, and passes through the pressure restricting orifice 55 through the head body 36 to partially pass the nozzle head. When the injection of 39b to the outside is performed, the water-based extinguishing agent is converted into large particles having an average particle diameter in the range of 200 μm to 2000 μm to be dispersed.

At this time, by using the air flow generated by the scattering of the large particle group of the fire extinguishing agent from the large particle nozzle opening 60b located inside, the small particle group of the fire extinguishing agent which has been dispersed from the small particle nozzle opening 60a located outside is transported, and The large particle group of the fire extinguishing agent simultaneously spreads the small particle group of the fire extinguishing agent to a wide range, and at the same time, the small amount of the fire extinguishing agent mixed with the small particles and the large particles can be dispersed to the entire protective area by a small amount of the charged head 10 .

Further, for example, a voltage of several thousand volts can be applied between the water-side electrode portion 40 and the sensing electrode portion 44, whereby an external electric field is generated between the electrodes, and the water-based fire extinguishing agent is converted into an average particle from the small particle ejection nozzle 38a. The spraying process of the small particles having a diameter in the range of 30 μm to 200 μm causes the small particles to be charged, and the water-based fire extinguishing agent is converted from the large particle injection nozzle 38b into an injection process of the large particles having an average particle diameter in the range of 200 μm to 2000 μm. The large particles of the jet are charged, and the small particle group of the fire extinguishing agent that has been charged is mixed with the large particle group of the fire extinguishing agent to be dispersed.

According to the third embodiment, the small-particle injection nozzle 38a and the large-particle injection nozzle 38b are disposed in the same manner as in the third embodiment, and the water head can be made smaller than the first embodiment in which the third embodiment is disposed adjacent to each other. Reduce the setup space and cost.

In addition, by arranging the large particle injection nozzles 38b on the inner side in the opposite manner to the second embodiment, the airflow generated by the spread of the large particle group of the fire extinguishing agent can be spread and spread from the small particle jets located outside. The fire extinguishing agent of the nozzle 38a has a small particle group and effectively transports a small particle group of the fire extinguishing agent.

Fig. 6 is a fourth embodiment of the charged dispersion head 10 shown in Figs. 1 and 2, and the sixth (A) diagram is a section, and the sixth (B) diagram is seen from the lower plane, the sixth (C). The system extracts and displays the sensing electrodes.

In the sixth embodiment, the charging head 10 of the fourth embodiment is configured to form the rotary nozzle 62 as a head nozzle constituting the small particle head and the large particle head 10B. In other words, the charging head 10 is configured to twist and fix the head body 36 to the front end of the descending pipe 34 connected to the pipe from the pump unit 12, and the cylindrical water-side electrode portion 40 is fitted into the head body via the insulating member 41. 36 inside the front end.

As shown in FIG. 2, the water-side electrode portion 40 is pulled out from the voltage applying portion 15 provided at the upper portion, and is connected to the water-side electrode portion 40 provided inside the head body 36 via the insulating member 41. . By the connection of the ground cable 50, the water-side electrode portion 40 is made to have a voltage of 0 volts and is lowered to the ground side.

A rotary injection nozzle 62 is provided on the lower side of the water-side electrode portion 40. The rotary injection nozzle 62 is placed inside the fixing member 43 via the bearing 64 and is rotatable, and another fixing member 66 is disposed between the water-side electrode 40 and the water-side electrode 40. .

As shown in Fig. 6(B), the rotary jet nozzle 62 forms a combination of two small particle jet slits 68 and a large particle jet slit 70 at a position deviated from the center of rotation.

The small particle jet slit 68 is supplied from the descending pipe 34, and is supplied with the water-based fire extinguishing agent supplied from the pump unit 12 of Fig. 1 and is injected into the outside by the head body 36, thereby converting the water-based extinguishing agent into an average particle. The small particles having a diameter in the range of 30 μm to 200 μm are dispersed.

The large particle jet slit 70 is supplied from the descending pipe 34 to the supply of the water-based fire extinguishing agent supplied from the pump unit 12 of Fig. 1 and is injected to the outside through the head body 36 to convert the water-based fire extinguishing agent into an average particle. The large particles having a diameter in the range of 200 μm to 2000 μm are dispersed.

The small particle jet slits 68 and the large particle jet slits 70 are formed to be inclined with respect to the wall thickness direction, and therefore, are rotated by the fire extinguishing agent from the small particle jet slits 68 and the large particle jet slits 70. The spray nozzle 62 is wound and spirally spreads a small particle group of the fire extinguishing agent and a large particle group of the fire extinguishing agent.

At this time, by using the air flow generated by the dispersion of the large particle group of the fire extinguishing agent from the large particle jet slit 70, the small particle group of the fire extinguishing agent which has been dispersed from the small particle jet slit 68 is transported, and the fire extinguishing agent can be large particles. At the same time, the group spreads the small particle group of the fire extinguishing agent to a wide range, and at the same time, the water head 10 is dispersed by a small amount of electricity, and the fire extinguishing agent mixed with small particles and large particles is dispersed to the entire protection area.

The cover 42 that is made of an insulating material is fixed to the head body 36 via the fixing member 43 by screwing. The outer cover 42 is a substantially cylindrical member, and is fixed by a screw of the ring 46, and the annular sensing electrode portion 44 is fitted into the lower opening.

As shown and described in FIG. 6(C), the sensing electrode portion 44 is formed in the center of the annular body to form an opening 54 through which the ejection particles from the small particle ejection slit 68 and the large particle ejection slit 70 pass.

The electrode application wire 48 is pulled out from the voltage application portion 15 at the upper portion shown in FIG. 2 with respect to the induction electrode portion 44 disposed at the lower portion of the outer cover 42, and the electrode application cable 48 is passed through the outer cover 42 made of an insulating material. It is connected to the sensing electrode portion 44 and is made to apply a voltage.

When the small particle ejection slit 68 of the spin injection nozzle 62 and the large particle ejection slit 70 spread the water-based fire extinguishing agent, the voltage applying unit 15 shown in FIG. 2 is controlled by the interlocking control relay device shown in FIG. The control signal of 20 is operated, and the water-side electrode portion 40 is formed as a ground side of 0 volts, and a direct current, an alternating current, or a pulse-like applied voltage of, for example, not more than 20 kV is applied to the ring-shaped sensing electrode portion 44.

According to this, when a voltage of several thousand volts is applied between the water-side electrode portion 40 and the sensing electrode portion 44, an external electric field can be generated between the electrodes by the application of the voltage, and the water-based fire suppressant can be transmitted through the rotary jet nozzle. The small particle ejecting slit 68 of 62 is converted into a jetting process of ejecting small particles having an average particle diameter in the range of 30 μm to 200 μm, so that the ejected small particles are charged while being converted into an average particle diameter by the water-based fire extinguishing agent from the large particle ejecting slit 70. In the spraying process of spraying large particles in the range of 200 μm to 2000 μm, the large particles are charged, and by the rotation of the rotary spray nozzle 62, the small particle group of the charged fire extinguishing agent is mixed with the large particle group of the fire extinguishing agent to spiral Disperse the ground.

When the water head 10 is dispersed by the use of the rotary jet nozzle 62, since it is not necessary to provide a water flow winding neutron or a water flow spiral for the inside of the nozzle, the nozzle structure can be simplified and the water head can be miniaturized. Reduce setup space and cost.

Further, in the charged dispersion head 10 used in the present embodiment, various configurations shown in the above embodiments can be applied. However, the present invention is not limited thereto, and a charged head of a suitable structure can be used.

Further, the charging voltage applied to the charged-spraying head is such that the water-side electrode portion is made 0 volts, the sensing electrode portion side is positively and negatively applied, or only the positive voltage is applied, or only the negative applied voltage is applied. The condition of the combustion member side of the object is appropriately determined as needed.

Further, the present invention includes appropriate modifications that do not impair the purpose and advantages thereof, and is not limited to the numerical values shown in the foregoing embodiments.

10. . . Charged water head

10A. . . Small particle water head

10B. . . Large particle water head

12. . . Pump unit

13. . . Manual valve

14. . . Water source

15. . . Voltage application unit

16. . . Piping

18. . . Dedicated fire sensor

20. . . Linkage control relay

twenty two. . . Manual operation box

twenty four. . . System monitoring control panel

26. . . Fire sensor

28. . . Receiver

30. . . Pressure regulating valve

32. . . Automatic on/off valve

34, 34a, 34b. . . Falling piping

36, 36a, 36b. . . Head body

37a, 37b. . . Neutral flow of water

38,68. . . Spray nozzle

38a. . . Small particle jet nozzle

38b. . . Large particle injection nozzle

39a, 39b. . . Nozzle head

40, 40a, 40b. . . Water side electrode

41, 41a, 41b. . . Insulating member

42,42a, 42b. . . Cover

43,43a, 43b, 66. . . Fixed member

44, 44a, 44b. . . Induction electrode

45, 45a, 45b, 54, 54a, 54b. . . Opening

46, 46a, 46b. . . Ring

48, 48a, 48b. . . Voltage application cable

50, 50a, 50b. . . Ground cable

52a, 58a. . . Small particle nozzle hole

52b, 60b. . . Large particle nozzle hole

55. . . Pressure limiting orifice

56a, 56b. . . Water flow spiral

58b. . . Large particle nozzle opening

60a. . . Small particle nozzle opening

62. . . Rotary spray nozzle

64. . . Bearing

68. . . Small particle jet slit

70. . . Large particle jet slit

A, B. . . Protective area

F. . . Fire

Fig. 1 is an explanatory view showing an embodiment of a fire prevention and disaster prevention apparatus according to the present invention.

Fig. 2 is an explanatory view showing the drawing of the protective zone A of Fig. 1 .

3(A) to 3(C) are views showing the first embodiment of the charged dispersion head according to the present invention.

4(A) to 4(C) are views showing a second embodiment of the charged dispersion head according to the present invention.

5(A) to 5(C) are views showing a third embodiment of the charged dispersion head according to the present invention.

6(A) to 6(C) are views showing a fourth embodiment of the charged dispersion head according to the present invention.

10. . . Charged water head

34. . . Falling piping

36. . . Head body

37a. . . Neutral flow of water

38a. . . Small particle jet nozzle

38b. . . Large particle injection nozzle

39a, 39b. . . Nozzle head

40. . . Water side electrode

41. . . Insulating member

42. . . Cover

43. . . Fixed member

44. . . Induction electrode

45,54. . . Opening

46. . . Ring

48. . . Voltage application cable

50. . . Ground cable

55. . . Pressure limiting orifice

56a. . . Water flow spiral

58a. . . Small particle nozzle hole

58b. . . Large particle nozzle opening

Claims (5)

A fire disaster prevention device includes: a fire extinguishing agent supply device, which is supplied with a water-based fire extinguishing agent via a pipe; a charged diffusing water head is disposed in a protective area, and the water system is pressurized by the above-mentioned fire extinguishing agent supply device. And the voltage application unit applies a charging voltage to the charged dispersion head of the charged dispersion, and the charged dispersion head includes a small particle water head, and the radiation average particle diameter is 30 μm. a water-based fire extinguishing agent in the range of 200 μm; and a large-particle water head, which is a water-based fire extinguishing agent having a radiation average particle diameter in the range of 200 μ to 2000 μm, wherein the small particle head and the large particle head are arranged in the lateral direction. Adjacent arrangement, and the small particle water head comprises: a small particle spray nozzle, which is sprayed into the outer space by the water-based fire extinguishing agent, and is converted into particles of a small particle diameter to be dispersed; the water flow is circumscribed by the neutron, so that a water flow cyclone supplied to the small particle injection nozzle; the induction electrode portion is disposed in a spray space of the small particle injection nozzle Persons; and water-side electrode portions, arranged based on the injection of small particles by contact with the interior of the nozzle of the aqueous extinguishing agent, Further, the large particle water head includes a large particle jet nozzle which is sprayed into an external space by a water-based fire extinguishing agent, and is converted into particles having a large particle diameter to be dispersed, and the water stream is circumsed by a neutron. a water flow cyclone of the large particle injection nozzle; an induction electrode portion disposed on a side of the injection space of the large particle injection nozzle; and a water side electrode portion disposed inside the large particle injection nozzle to be in contact with a water-based fire extinguishing agent Further, the voltage application unit applies an external electric field generated by applying a voltage between the small-particle water head and the large-particle water head between the sensing electrode portion and the water-side electrode portion, and is applied to the small particles by the small particles. The spray nozzle and the large particle spray nozzle are in the water-based fire extinguishing agent during the spraying process to charge the sprayed particles. A fire disaster prevention device includes: a fire extinguishing agent supply device, which is supplied with a water-based fire extinguishing agent via a pipe; a charged diffusing water head is disposed in a protective area, and the water system is pressurized by the above-mentioned fire extinguishing agent supply device. The radiation particles of the agent are charged, and the particles of the water-based fire extinguishing agent containing a small particle diameter and a large particle diameter in a range of 30 μm to 2000 μm are mixed and charged; and the voltage application unit applies a charged voltage to The above-mentioned charged dispersion of the charged diffuser, The above-mentioned charged diffusing head comprises: a small particle jet nozzle which is sprayed into a small space by means of a water-based fire extinguishing agent sprayed toward an external space; and the large particle jet nozzle is coaxial with the small particle jet nozzle. Arranged on the outside, and is sprayed into the external space by the water-based fire extinguishing agent, and is converted into particles having a large particle diameter to be dispersed; the water flow is swirled by the neutron, and the water flowing to the small particle diameter spray nozzle is swirled; a spiral for swirling the water flow, wherein the water flow is supplied to the large particle diameter spray nozzle; the induction electrode portion is disposed on the injection space side of each of the injection nozzles; and the water-side electrode portion is disposed in each of the spray nozzles The inflow side is in contact with the water-based fire extinguishing agent, and the voltage applying unit applies an external electric field generated by applying a voltage between the sensing electrode portion and the water-side electrode portion to the small particle injection nozzle and the large The particle jet nozzle is in the water-based fire extinguishing agent during the spraying process to charge the sprayed particles. A fire disaster prevention device includes: a fire extinguishing agent supply device, which is supplied with a water-based fire extinguishing agent via a pipe; a charged diffusing water head is disposed in a protective area, and the water system is pressurized by the above-mentioned fire extinguishing agent supply device. The radiation particles of the agent are charged to mix the smaller particles contained in the range of 30 μm to 2000 μm. The sub-diameter and the radiation particles of the water-based fire extinguishing agent having a larger particle diameter are charged and dispersed; and the voltage applying portion applies a charging voltage to the charged-distributing water-spraying head, wherein the charged-dispersing head includes: large particles The radial jetting nozzle is sprayed into the external space by the water-based fire extinguishing agent, and is converted into particles having a large particle diameter to be dispersed; the small particle jet nozzle is disposed coaxially with the large particle diameter jetting nozzle, and is disposed on the outside The water-based fire extinguishing agent is sprayed into the external space and converted into particles having a small particle diameter to be dispersed; the water flow is swirled by the neutron, and the water is supplied to the large particle diameter spray nozzle; the water flow is spiraled and supplied. a water flow cyclone to the small particle diameter injection nozzle; an induction electrode portion disposed on an injection space side of each of the injection nozzles; and a water side electrode portion disposed on an inflow side of each of the injection nozzles and a water-based fire extinguishing agent In the contact, the voltage applying portion is generated by applying a voltage between the sensing electrode portion and the water-side electrode portion. Unit electric field is applied to the spray nozzle by the small particles and the large particles in an aqueous spray nozzle of the extinguishing agent injection charged spray particles. A fire disaster prevention device includes: a fire extinguishing agent supply device, which is pressurized with a water supply agent through a pipe The charged diffusing head is disposed in the protective area, and charges the radiation particles of the water-based fire extinguishing agent pressurized by the fire extinguishing agent supply device to mix the smaller particle diameters included in the range of 30 μm to 2000 μm. a radiation particle of a larger particle diameter water-based fire extinguishing agent is charged and dispersed; and a voltage applying part applies a charged voltage to the charged dispersion head of the charged dispersion, wherein the charged dispersion head includes: a rotary spray nozzle Rotating the water-based fire extinguishing agent to the external space; the small particle nozzle slit is attached to the opening of the rotary jet nozzle, and is sprayed into the outer space by the water-based fire extinguishing agent to be converted into particles having small particle diameters. a diffuser; a nozzle for a large particle is attached to the opening of the rotary jet nozzle, and is sprayed into an external space by a water-based fire extinguishing agent, and is converted into particles having a large particle diameter to be dispersed; and the sensing electrode portion is disposed in the foregoing a side of the injection space of the injection nozzle; and a water-side electrode portion disposed on the inflow side of the rotary injection nozzle and the water system In addition, the voltage application portion is applied to the small-particle nozzle slit and the large-particle nozzle by the external electric field generated by applying a voltage between the sensing electrode portion and the water-side electrode portion. Sew in the jet The water-based fire extinguishing agent of the process charges the sprayed particles. The fire disaster prevention apparatus according to any one of claims 1 to 4, wherein the charged dispersion head is such that the fire extinguishing agent particles contained in a predetermined particle diameter range are positively or negatively charged.