WO2013179416A1

WO2013179416A1 - Firefighting device, charged dispersal head, and charged dispersal method

Info

Publication number: WO2013179416A1
Application number: PCT/JP2012/063950
Authority: WO
Inventors: 利秀 ▲辻▼; 吉田　哲雄
Original assignee: ホーチキ株式会社
Priority date: 2012-05-30
Filing date: 2012-05-30
Publication date: 2013-12-05

Abstract

A firefighting device comprises: a fire extinguishing agent supply apparatus which supplies a water-based fire extinguishing agent via a pipe; a charged dispersal head which is installed in a protection area, and which charges and disperses discharge particles of the fire extinguishing agent which is pressurized and supplied by the fire extinguishing agent supply apparatus; and a voltage application unit which applies a charge voltage to the charged dispersal head. The charged dispersal head further comprises: a nozzle which discharges the fire extinguishing agent in an external space; a fire extinguishing agent-side electrode unit which is positioned within the nozzle and makes contact with the fire extinguishing agent; a deflected dispersal member which deflects the fire extinguishing agent which comes from the nozzle in an arbitrary direction in a semi-circular shape or a fan shape and forms a thin film flow, and thereafter separates and divides the thin film flow into a particle group flow and disperses same; and an inductive electrode unit which is positioned near a thin film flow separation and division unit.

Description

Fire disaster prevention device, electrostatic spraying head, and electrostatic spraying method

The present invention relates to a fire disaster prevention apparatus, a charging spraying head, and a charging spraying method in which an aqueous fire extinguishing agent containing water, seawater, a fire extinguishing agent and the like is charged and sprayed from the head.

Conventionally, in the event of a fire, by charging the extinguishing agent particles sprayed from the charging spray head, the Coulomb force acting between the extinguishing agent particles and the fire extinguisher and smoke particles is used, and the three-dimensional and high power to the combustion product It is known that a high fire extinguishing and smoke extinguishing performance can be obtained by increasing the efficiency of the wetting effect and the smoke capturing effect (Patent Document 1).

FIG. 8 shows a conventional charge spraying head. In FIG. 8, the charge spreading head 100 has a head main body 136 screwed and fixed to the tip of a falling pipe 134 connected to the pipe from the pump unit, and an inner side of the head main body 136 is insulated via an insulating member 141. The water-side electrode portion 140 is incorporated.

A ground cable 150 drawn from a voltage application unit (not shown) is connected to the water side electrode unit (extinguishing agent side electrode unit) 140 through the insulating member 141, and the water side electrode unit 140 is connected to the ground side. is doing.

An injection nozzle 138 is provided on the lower side of the water-side electrode unit 140 in the figure, and includes a nozzle rotor 138a provided inside the water-side electrode unit 140 and a nozzle head 138b provided on the tip side. The injection nozzle 138 receives the pressure-supplied extinguishing agent from the falling pipe 134, converts it into a swirling flow by the nozzle rotor 138a, and then injects it from the nozzle head 138b to convert the extinguishing agent into a particle group flow. And spray.

A cover 142 made of an insulating material is fixed to the injection nozzle 138 with a screw through a fixing member 143, and a ring-shaped induction electrode portion 144 is incorporated into an opening on the lower side of the cover 142 to stop the cover. Screwed together with the ring. The ring-shaped induction electrode portion 144 forms an opening through which the fire-extinguishing agent spray particles from the spray nozzle 138 pass at the center of the ring-shaped main body. An electrode application cable 148 from a voltage application unit provided outside is connected to the ring-shaped induction electrode unit 144.

When spraying the fire extinguishing agent from the charging spray head 100, the water-side electrode portion 140 is set to the ground side at 0 volts, and the ring-shaped induction electrode portion 144 has a direct current, alternating current, or pulse of about several KV to several tens of KV, for example. An applied voltage (charging voltage) is applied. By applying this voltage, an external electric field is generated between the two electrodes, and the extinguishing agent is charged by the action of the external electric field through the injection process in which the extinguishing agent is converted into a particle group flow from the injection nozzle 138. The flow can be sprayed to the external target area (protection zone).

Japanese Unexamined Patent Publication No. 2009-106405

According to such a conventional spraying of a fire extinguishing agent by means of a charged spraying (spraying) head, for example, when the fire extinguishing agent is water, the amount of water required for fire extinguishing or smoke suppression is compared with the amount of spraying water required by an uncharged spraying head. Can be greatly reduced. However, when the scale of a fire is large, the amount of water required by the charged spraying head is considerably smaller than that by an uncharged spraying head, but the minimum amount of heat generated by the fire can be absorbed. It is necessary to disperse the amount of water from which the total specific heat and latent heat of vaporization can be obtained. If the amount of water is insufficient, the desired effect cannot be obtained. Thus, when the scale of the fire is large, it is natural that a charged spraying head with a large amount of water is required.

However, in the conventional charging / spreading head 100 shown in FIG. 8, the water flow is rotated by the nozzle rotator 138a of the head main body 136, and the particle group flow is generated by spraying and radiating from the spray nozzle 138 using centrifugal force. In this conventional electrification spray pattern, the charge amount per unit water volume decreases as the spray amount increases, and the fire extinguishing and smoke eliminating effect due to coulomb force is enhanced. The problem that the action is reduced has been confirmed by experiments of the present inventors.

FIG. 9 is a ratio of the average charge amount per unit amount of charged spray water measured by the Faraday cage method when the charging voltage applied to the conventional charge spray head 100 shown in FIG. 8 is constantly +5 KV. The specific charge indicating the average charge amount is smaller as the spray amount increases (the head becomes larger).

Further, in the charge spraying head 100 that applies the rotation to the conventional water flow and sprays and radiates using the centrifugal force from the spray nozzle 138, the spray angle of the fire extinguishing agent (downward spread angle) is about 90 degrees at most, and the flying Since the distance is also relatively short, there is a problem that the charged fire extinguishing agent cannot be spread over a wide range.

Moreover, in the conventional electric field spraying head, it is set as the omnidirectional spraying which spreads the charge-extinguishing agent in the entire circumferential direction which is 360 degrees in the horizontal direction. However, depending on the protection section, the electric field spraying head is close to the partition wall. In such a case, it is left as a problem to solve the problem of carrying out charging spraying with a predetermined directivity in the horizontal direction.

The aspect according to the present invention is a fire disaster prevention device that secures a sufficient charge amount even when the spray amount increases and exhibits a high fire extinguishing and smoke eliminating effect using Coulomb force and enables charge spraying having a predetermined directivity. It is an object to provide a (facility), a charge spraying (spraying) head and a charge spraying (spraying) method.

(Fire disaster prevention equipment)
(1) The fire disaster prevention device according to one aspect of the present invention is:
A fire extinguisher supply facility for supplying a water-based fire extinguisher via a pipe;
A charged spraying head installed in a protective compartment and charged by spraying spray particles of fire extinguisher pressurized by a fire extinguisher supply facility;
A voltage application unit for applying a charging voltage to the charging and spreading head;
A fire disaster prevention device comprising:
The electrostatic spraying head
A nozzle for injecting fire extinguishing agent into the external space;
A fire extinguishing agent side electrode portion that is arranged inside the nozzle and contacts the extinguishing agent;
A deflection spraying member that deflects the fire extinguishing agent from the nozzle in an arbitrary direction into a substantially semicircular or fan shape to form a thin film flow, and then splits and sprays the particle group flow;
An induction electrode portion disposed in the vicinity of the splitting separation portion of the thin film flow;
Is provided.

(2) In the aspect of the above (1), the deflecting and spreading member may be a deflector that deflects the extinguishing agent discharged from the nozzle into a thin film flow spreading in a substantially semicircular or fan shape in a diagonally downward direction.

(3) In the above aspect (2), the induction electrode portion may be substantially semicircular or fan-shaped, and may be disposed on the upper side in the vicinity of the splitting separation portion of the thin film flow formed by the deflector.

(4) In the above aspect (2), the induction electrode portion may be substantially semicircular or fan-shaped and disposed below the splitting portion of the thin film flow formed by the deflector.

(5) In the above aspect (1), the induction electrode portion may be any one of a metal, a resin, a fiber bundle, rubber, or a composite having conductivity.
(6) In the above aspect (1), a part or all of the induction electrode portion may be covered with an insulating material.

(7) In the aspect of the above (1), the extinguishing agent side electrode portion may be at least a part of the extinguishing agent supply flow path in the electrification spraying head, or a nozzle.

(8) In the above aspect (1), the voltage of the extinguishing agent side electrode portion may be a predetermined reference value, and a predetermined charging voltage may be applied to the induction electrode portion.
(9) In the above aspect (8), a predetermined charging voltage in a direct current, alternating current, or pulse shape may be applied to the induction electrode portion.

(Charging spraying head A)
(10) A charge spraying head according to one aspect of the present invention is installed in a protective section and sprayed by applying a charging voltage from a voltage application unit to spray particles of a fire extinguisher supplied by a fire extinguisher supply facility. A charging spray head that
A nozzle for injecting fire extinguishing agent into the external space;
A fire extinguishing agent side electrode portion that is arranged inside the nozzle and contacts the extinguishing agent;
A deflection spraying member that deflects the fire extinguishing agent from the nozzle in an arbitrary direction into a substantially semicircular or fan shape to form a thin film flow, and then splits and sprays the particle group flow;
An induction electrode portion disposed in the vicinity of the splitting separation portion of the thin film flow;
Is provided.

(11) to (18) In the above aspect (10), the same configuration as the above aspects (2) to (9) may be adopted.

(Extinguishing agent application method)
(19) The fire extinguishing agent spraying method of one aspect according to the present invention is a fire disaster prevention device,
In the event of a fire, supply a water-based fire extinguisher to the electrostatic spraying head installed in the protection zone via a pipe,
The fire extinguishing agent sprayed from the electrostatic spraying head is deflected in a semi-circular or fan shape in any direction to form a thin film flow, and then divided and dispersed into a particle group flow. To be charged.

(20) In the aspect of the above (19), the charging spray head is
A nozzle for injecting fire extinguishing agent into the external space;
A fire extinguishing agent side electrode portion that is arranged inside the nozzle and contacts the extinguishing agent;
A deflection spraying member that deflects the fire extinguishing agent from the nozzle in an arbitrary direction into a substantially semicircular or fan shape to form a thin film flow, and then splits and sprays the particle group flow;
An induction electrode portion arranged in the vicinity of the splitting separation portion of the thin film flow,
An external electric field generated by applying a voltage between the induction electrode part and the extinguishing agent side electrode part may be applied to the extinguishing agent in the vicinity of the splitting and separating part of the thin film flow by the deflecting and spreading member to be charged.

(21) to (28) In the above aspect (20), the same configuration as the above aspects (2) to (9) may be adopted.

(Charging sprayer)
(29) A charge spraying device according to one aspect of the present invention includes:
A spray agent supply facility for supplying a water-based spray agent via a pipe;
A charged spraying head installed in the spraying section and charged by spraying spray particles of spraying agent supplied by a spraying agent supply facility;
A charging application device comprising a voltage application unit for applying a charging voltage to the charging application head,
The electrostatic spraying head
A nozzle that sprays the spray agent into the external space;
A spraying agent side electrode portion arranged inside the nozzle and in contact with the spraying agent;
A deflecting and dispersing member that divides and disperses into a particle group flow after forming a thin film flow by deflecting the spraying agent exiting from the nozzle in a semicircular or fan shape in an arbitrary direction;
An induction electrode portion disposed in the vicinity of the splitting and separating portion of the thin film flow.

(30) to (37) In the above aspect (29), the same configuration as the above aspects (2) to (9) may be adopted. However, fire extinguishing agents in fire disaster prevention equipment shall be read as spraying agents.

(Charging spraying head B)
(38) A charge spraying head according to an aspect of the present invention is installed in a spraying section and sprayed by spraying spray particles of a spraying agent supplied by a spraying agent supply facility by applying a charging voltage from a voltage application unit. A charging spray head that
A nozzle that sprays the spray agent into the external space;
A spraying agent side electrode part that is arranged inside the nozzle and contacts the spraying agent;
A deflecting and dispersing member that divides and disperses into a particle group flow after forming a thin film flow by deflecting the spraying agent exiting from the nozzle in a semicircular or fan shape in an arbitrary direction;
An induction electrode portion disposed in the vicinity of the splitting and separating portion of the thin film flow.

(39) to (46) In the above aspect (38), the same configuration as in the above aspects (2) to (9) may be adopted. However, fire extinguishing agents in fire disaster prevention equipment shall be read as spraying agents.

(Spreading method of the charging sprayer)
(47) A charging method of a charging spraying device according to one aspect of the present invention includes:
Supply the water-based spraying agent to the electrified spraying head installed in the spraying section via the pipe,
The spraying agent sprayed from the electrostatic spraying head is deflected into a semicircular or fan shape in any direction to form a thin film flow, and then split into particle groups and sprayed, and an external electric field is applied near the splitting part of the thin film flow. Apply and charge.

(48) In the aspect of the above (47), the charging spray head is
A nozzle that sprays the spray agent into the external space;
A spraying agent side electrode part that is arranged inside the nozzle and contacts the spraying agent;
A deflecting spraying member for splitting and spraying a particle group flow after forming a thin film flow by deflecting the spraying agent from the nozzle in a semicircular or fan shape in an arbitrary direction;
An induction electrode portion disposed in the vicinity of the splitting separation portion of the thin film flow;
With
An external electric field generated by applying a voltage between the induction electrode part and the spraying agent side electrode part may be applied to the spraying agent in the vicinity of the splitting separation part of the thin film flow by the deflecting spraying member to be charged.

(49) to (56) In the above aspect (48), the same configuration as the above aspects (2) to (9) may be adopted. However, fire extinguishing agents in fire disaster prevention equipment shall be read as spraying agents.

According to each of the above aspects of the present invention, when a charging spray head is installed near the wall of a protective compartment, the extinguishing agent ejected from the nozzle of the charging spray head is deflected in any predetermined direction by a deflector serving as a deflecting spray member. A thin film flow spreading in a substantially semi-circular or fan shape is formed, an induction electrode is arranged in the vicinity of the splitting separation part where the thin film flow is converted into a particle group flow, and an external electric field is applied and charged, thereby increasing the amount of application Even though it is a head, it is possible to perform charge distribution with a large charge amount having directivity spreading in a predetermined direction.

In addition, by setting the shape of the deflecting spray member that deflects the fire extinguisher sprayed from the nozzle into a thin film flow in any given direction, it is possible to easily achieve charge spraying with an arbitrary directivity angle, coupled with an increase in the amount of water spray. Sufficient flight distance can be obtained, and it is possible to obtain a high fire extinguishing and smoke extinguishing effect using Coulomb force by spraying a charge extinguishing agent over a wide range as required.

It is explanatory drawing which showed embodiment of the fire disaster prevention equipment by this invention. It is explanatory drawing which took out and showed the protection area A of FIG. 1 is a longitudinal sectional view showing an embodiment of a charging spray head according to the present invention. It is a top view of the electrification spraying head. It is the longitudinal cross-sectional view which took out and showed the nozzle part provided in the electrification dispersion | distribution head of FIG. 3A. It is the side view which looked at the same nozzle part from arrow AR of Drawing 4A. It is the plane sectional view which looked at the lower part from the nozzle hole opening position of Drawing 4A of the same nozzle part. It is the plane sectional view showing another example of the nozzle part of Drawing 4C. It is the graph which showed the relationship between the spraying quantity by this embodiment, and a specific charge with contrast with the conventional head. It is a time chart which showed the applied voltage supplied to the electrification distribution head of this embodiment. It is the longitudinal cross-sectional view which showed other embodiment of the electrification dispersion | distribution head by this invention. It is a top view of the electrification spraying head. It is the side view which looked at a part of conventional charge distribution head. It is the graph which showed the relationship between the spraying quantity by the conventional electrification spraying head, and a specific charge.

FIG. 1 is an explanatory view showing an embodiment of a fire disaster prevention device (fire disaster prevention equipment) according to the present invention. In FIG. 1, the charging spraying heads 10 according to the present embodiment are installed on the ceiling side near the walls of the protection areas A and B in a building, for example, a computer room. A fire extinguishing agent spray having a predetermined directivity is applied to the area.

A pipe 16 is connected via a manual valve (gate valve) 13 from a pump unit 12 installed to a water source 14 that functions as a fire extinguishing agent storage / supply facility (sprayant storage / supply facility). Via the pressure valve 30 and the automatic opening / closing valve 32, it is connected to the charging spray head 10 installed in each of the protection areas A and B. The water source 14 stores water, seawater, or other water-based fire extinguishing agents.

In each of the protection areas A and B, a dedicated fire detector 18 serving as an input signal source for controlling the extinguishing agent spraying from the charging spraying head 10 is installed. Further, an interlocking control relay device 20 is provided for each of the protection areas A and B, and a dedicated fire detector 18 is connected to the signal line. The interlock control relay device 20 is further connected with a manual operation box 22 for performing spray control from the charge spray head 10 by manual operation.

The interlock control relay device 20 is connected to the signal lines from the dedicated fire detector 18 and the manual operation box 22 in this way, and the signal lines for applying and controlling the charging drive voltage to the charging spraying head 10; A signal line for controlling opening / closing of the automatic opening / closing valve 32 is drawn out.

Furthermore, a fire detector 26 of an automatic fire alarm facility is installed in the protection area A, and is connected to a sensor line drawn from a receiver 28 of the automatic fire alarm facility. In addition, although the fire detector 26 of the automatic fire alarm facility is not provided in the protection area B, it is a matter of course that it may be provided as necessary.

On the other hand, the interlock control relay device 20 installed corresponding to the protection areas A and B is connected to the system monitoring control panel 24 by a signal line. A receiver 28 of an automatic fire alarm facility is also connected to the system monitoring control panel 24. Further, the system monitoring control panel 24 connects the pump unit 12 to the signal line to control the pump start / stop of the pump unit 12.

FIG. 2 is an explanatory diagram showing the protection area A in FIG. On the ceiling side near the wall of the protection area A, the charging spray head 10 is installed with the central side of the protection area set as the charging spray direction. The ceiling side pipe (falling pipe 34 in FIG. 3A) to which the electrostatic spraying head 10 is connected is connected to the pipe 16 from the pump unit 12 shown in FIG. 1 via the pressure regulating valve 30 and the automatic opening / closing valve 32. Yes.

In addition, a voltage application unit 15 is installed in the upper part of the vicinity of the charging / spreading head 10, and as will be clarified later, a predetermined voltage is applied to the charging / spreading head 10, and ejection and discharge from the charging / spreading head 10 is performed. The fire extinguishing agent is charged so that it can be sprayed. A dedicated fire detector 18 is installed on the ceiling side of the protection area A, and a fire detector 26 of an automatic fire alarm facility is also connected. The voltage application unit 15 may be provided integrally with the charging / spreading head 10.

3A and 3B show an embodiment of the charging and spreading head 10 shown in FIGS. 1 and 2, FIG. 3A shows a longitudinal section, and FIG. 3B shows the charging and spreading head 10 on the lower side (floor side) when installed on the ceiling. The plane seen from FIG.

3A and 3B, the charging and spreading head 10 has

metal bodies

36 and 38 divided into upper and lower parts connected by bolts 37, and is attached to the end of a falling pipe 34 connected to the pipe 16 from the pump unit 12. 36 is fixed by screwing. A cylindrical fire extinguishing agent side electrode portion 46 is incorporated in the internal flow path (supply flow path) of the

bodies

36 and 38. The extinguishing agent side electrode portion 46 is made of a conductive metal material, and further covered with an insulating material, and is electrically insulated from the

metal bodies

36 and 38.

As shown in FIG. 2, the extinguishing agent-side electrode portion 46 is connected to a ground cable 54 drawn from the voltage application portion 15 installed in the vicinity of the outside. The extinguishing agent side electrode portion 46 is grounded by the connection of the ground cable 54.

A nozzle portion 40 is disposed at the front end of the internal flow path (supply flow path) of the body 38 disposed at the lower portion via an insulating spacer 44 following the extinguishing agent side electrode section 46.

As shown in FIGS. 4A to 4C, the nozzle portion 40 is a stepped cylindrical body having a large diameter at the top and a small diameter at the bottom, and an inlet 43 is opened at the top and a notch 47 is provided at the bottom. A deflector 42 is integrally formed as a part of this, and a nozzle hole (nozzle opening) 41 is opened toward the deflector 42 inside the cylinder. FIG. 4C shows a cross section of the nozzle hole opening position in FIG. 4A as viewed from the lower side.

In the present embodiment, the deflector 42 forms a substantially vertical vertical deflector surface 42a behind the opening of the nozzle hole 41, and subsequently follows the vertical deflector surface 42a and an inclined deflector surface 42b having an inclination angle α downward with respect to the horizontal direction. The fire extinguisher ejected from the nozzle hole 41 is applied to the deflector 42 so that the horizontal direction has a substantially semicircular or fan-shaped directivity angle θ, and the vertical direction is obliquely downward. Is converted into a thin film flow 56 (FIG. 3A) having an inclination angle α and emitted.

The vertical deflector surface 42a of the deflector 42 sets a horizontal directivity angle of θ = 180 degrees that is approximately 90 degrees (deg) on the left and right with respect to the directivity direction center 60 indicated by the arrow in FIG. 4C.

Here, the horizontal directivity angle θ is formed so as to have an arbitrary angle of 90 degrees or less to the left and right with respect to the directivity direction center 60 as necessary, so that a predetermined directivity angle of θ = 180 degrees or less is obtained. It can also be given. For example, when it is desired to reduce the directivity angle θ, as shown in FIG. 4D, for example, the angle θ with respect to the directivity direction center 60 of the vertical deflector surface 42a of the deflector 42 may be set to a predetermined angle of 180 degrees or less.

The directivity angle θ may be 180 degrees or more. In this case, the angle with respect to the directivity direction center 60 is 90 degrees or more on the left and right, and the thin film flow spreads behind. The orientation adjustment may be performed by curving the vertical deflector surface 42a into a concave shape or a convex shape. Furthermore, the directivity angle may be asymmetrical as necessary.

Referring to FIGS. 3A and 3B again, the thin film flow 56 deflected by the deflector 42 is radiated as a particle group flow 58 by dividing the thin film flow 56 from the vicinity of the splitting part P and directed to the protection area. It is spread with sex.

A frame 50 having a frame structure extending in a fan shape from the lower end of the body 38 along the upper side of the thin film flow 56 deflected by the deflector 42 is integrally formed, and the tip side of the frame 50 in the vicinity of the splitting separation portion P of the thin film flow 56 In addition, the semicircular ring-shaped induction electrode portion 48 shown in FIG. 3B is disposed downward so as to face the thin film flow 56.

The induction electrode portion 48 is formed of a conductive member and is covered with an insulating material, and is electrically insulated from the metal frame 50 and the fire extinguisher sprayed.

The voltage application cable 52 drawn from the voltage application unit 15 shown in FIG. 2 is connected to the induction electrode unit 48 arranged on the lower side of the front end of the frame 50.

3A and 3B, the induction electrode portion 48 is disposed in a region that is, for example, 10 mm or less upstream of the splitting portion P of the

thin film flow

56, 30 mm or less downstream, and 20 mm or less from the surface of the thin film flow 56. is doing.

Here, as the extinguishing agent side electrode portion 46 and the induction electrode portion 48 used in the charging and spreading head 10 of the present embodiment, in addition to conductive metal, conductive resin, fiber bundle, rubber, etc. It may also be a composite that combines these.

When spraying the fire extinguishing agent from the charging spraying head 10, the voltage application unit 15 shown in FIG. 2 is operated by the control signal from the interlock control relay device 20 shown in FIG. 1, and the fire extinguishing agent side electrode unit 46 is connected to the reference potential. On the (earth) side, a DC (steady) applied voltage of about several KV to several tens of KV, for example, an applied voltage that is AC or pulsed is applied to the induction electrode portion 48. According to the inventor's experiment, the applied voltage is preferably in a range not exceeding 20 KV, but is not limited thereto.

In this way, when a voltage of, for example, several KV is applied between the extinguishing agent side electrode portion 46 and the induction electrode portion 48, an external electric field is generated by this voltage application, and the fire extinguishing fired from the nozzle portion 40 due to this action. The agent is converted into a thin film flow 56 having a directivity spreading downward along the deflector 42 in a substantially semicircular or fan shape, and the thin film flow 56 starts to split and separate from the vicinity of the splitting separation portion P to be converted into a particle swarm flow 58. Through the process, the fire extinguishing agent particles are charged, and the charged jetting particles can be sprayed to the external protection area target area.

When the fire extinguisher sprayed from the nozzle portion 40 is deflected by the deflector 42, a part of the fire extinguisher may come into contact with the induction electrode portion 48 due to peeling or scattering, but the induction electrode portion 48 is covered with an insulating material. Therefore, the fire extinguisher can be charged without being in contact with the fire extinguisher and causing a short circuit or charge neutralization.

FIG. 5 schematically shows an example in which the relationship between the spray amount and the specific charge in a certain condition is compared between the charge spray head 10 according to the present embodiment provided with the deflector 42 and the conventional charge spray head without the deflector 42. It is the shown graph.

In FIG. 5, the characteristic B is a characteristic of a conventional charging / spreading head, and is a case where a predetermined charging voltage is constantly applied. The specific charge indicating the charge amount greatly decreases with the increase in the spray amount per unit time. On the other hand, in the charge spray head 10 of the present embodiment, the spray amount as shown in the characteristic A, for example. The decrease in specific charge is small with respect to the increase in. In the example of FIG. 5, the specific charge (point “a” of characteristic A) of the nozzle of the present embodiment at a spray rate of 7 [liter / min] is the specific charge of the conventional nozzle at a spray rate of 1.5 [liter / min]. The level corresponds to the point B of the characteristic B).

As described above, according to the charge spraying head 10 of the present embodiment, the problem that the charge amount per unit water amount greatly decreases as the spraying amount increases in the conventional charge spraying head is solved, and charging is performed with high efficiency. Therefore, it is possible to perform high-efficiency and large-charge-amount spraying with directivity in a predetermined direction while being a charge spray head having a large spray amount. In particular, when the charging spray nozzle is installed in the vicinity of the wall surface, it is possible to realize highly efficient spraying toward a desired target region while suppressing spraying on the wall surface side.

Further, since the fire extinguisher sprayed from the nozzle unit 40 by the deflector 42 is converted into the particle group flow 58 through the thin film flow 56 and sprayed, the charge spraying having an arbitrary directivity angle compared to the conventional charge spraying head is achieved. It can be easily realized and the amount of water spray can be increased while suppressing charging loss, so a sufficient flight distance can be obtained, and a high extinguishing and extinguishing effect can be obtained by spraying a charged extinguishing agent at an arbitrary directivity angle in an arbitrary directivity direction. Obtainable.

Next, the monitoring operation of the fire disaster prevention apparatus in the embodiment of FIG. 1 will be described. Assuming that a fire F occurs in the protection area A, for example, the dedicated fire detector 18 detects a fire and sends a fire detection signal to the system monitoring control panel 24 via the interlock control relay device 20.

When the system monitoring control panel 24 receives the fire detection signal from the dedicated fire detector 18 installed in the protection area A, the pump unit 12 is activated, the fire-extinguishing water is pumped up from the water source 14 and pressurized by the pump unit 12, and piping 16 is supplied.

At the same time, the system monitoring control panel 24 outputs a start signal for the charging and spreading head 10 to the interlock control relay device 20 provided corresponding to the protection area A. In response to this activation signal, the interlock control relay device 20 opens the automatic opening / closing valve 32, whereby the water-based fire extinguisher having a constant pressure regulated by the pressure regulating valve 30 is charged via the opened automatic opening / closing valve 32. As shown in FIG. 2, it is supplied to the spraying head 10 and sprayed from the charging spraying head 10 to the protection area A as spray particles (groups) with a predetermined directivity direction and directivity angle.

At this time, the interlock control relay device 20 sends an activation signal to the voltage application unit 15 provided in the charge distribution head 10 shown in FIG. For example, an applied voltage of DC, AC, or pulse that is several KV is supplied.

For this reason, in the electrification spraying head 10 shown in FIGS. 3A and 3B, the thin film flow 56 deflected and formed by the deflector 42 by injecting a pressurized water-based fire extinguisher from the nozzle portion 40 is converted into a particle group flow 58. For example, a voltage of several KV is applied in a predetermined pattern to the reference potential (ground) of the extinguishing agent side electrode portion 46 on the side of the ring-shaped induction electrode portion 48 provided inside the frame 50 and spreading in a fan shape. In addition, the external electric field generated by the voltage application can be charged and dispersed by being applied to the extinguishing agent in the vicinity of the splitting separation part P.

As shown in FIG. 2, the fire extinguishing agent particles injected toward the protection area A where the fire F is generated from the charging spray head 10 installed on the wall are charged, so the fire is caused by the Coulomb force due to the charging. It adheres efficiently to the combustion source of F. In addition, the combustion agent adheres to all surfaces due to the wraparound effect, and the wetting effect on the combustion agent is greatly increased compared to the case where uncharged water particles are sprayed as in the prior art, and high fire extinguishing ability is exhibited.

Moreover, since a fire extinguishing agent adheres and falls in the same manner for smoke (fire smoke) generated by combustion, a high smoke extinguishing effect can be obtained. In other words, the smoke extinguishing effect in the present embodiment is such that the smoke extinguishing effect by spraying the non-charged extinguishing agent particles as in the prior art is a trapping action by stochastic collision between the extinguishing agent particles and the smoke particles. In this embodiment, smoke particles in the charged state of opposite polarity are collected by the Coulomb force of the extinguishing agent particles that are sprayed and charged, thereby exhibiting a high smoke extinguishing effect including a smoke diffusion suppressing effect. Is done.

3A and 3B, for example, when the extinguishing agent side electrode portion 46 is set to 0 volts and a positive voltage is applied to the induction electrode portion 48 in a DC or pulse manner. The sprayed water particles are charged only with a negative charge.

When fire extinguisher particles charged with the same polarity are sprayed only on negative charges in this way, repulsive force acts between the extinguishing agent particles in the space, and this reduces the probability that the extinguishing agent particles collide and grow and fall. Thus, the density of the extinguishing agent particles staying in the space is increased, so that a high smoke extinguishing and extinguishing ability is exhibited. That is, by extinguishing the extinguishing agent particles with the same polarity, they can be dispersed without lowering the convective particle density due to repulsive force acting between the particles, and a high smoke extinguishing and extinguishing ability is exhibited.

The smoke eliminating effect in the present embodiment as described above is that the smoke eliminating effect by the dispersion of uncharged water particles as in the conventional case is a capturing action by the stochastic collision between the water particles and the smoke particles. In that case, smoke particles that are also in a charged state are collected by the Coulomb force of the water particles that are charged and dispersed, and thereby a significant smoke eliminating effect is exhibited.

In addition, the polarity of charging can be appropriately selected depending on the object to be sprayed. For example, when the polarity of the object to be sprayed is approximately positive, control is performed such that the extinguishing agent particles are charged to a negative polarity.

FIG. 6 is a time chart illustrating an applied voltage pattern applied from the voltage application unit 15 to the charging / spreading head 10 according to the present embodiment, and voltage is applied from time t1 as follows.

FIG. 6A shows the case where a + V DC (steady) voltage is applied. In this case, negatively charged extinguishing agent particles are continuously dispersed.

FIG. 6B shows a case where a DC (steady) voltage of −V is applied. In this case, positively charged extinguishing agent particles are continuously dispersed.

FIG. 6C shows a case where an alternating voltage of ± V is applied. In this case, the negatively charged extinguishing agent particles are dispersed in accordance with the change of the alternating voltage during the positive half cycle, and the negative voltage is applied. During the half cycle period, the positively charged extinguishing agent particles are alternately sprayed according to the change of the AC voltage.

FIG. 6D shows a case where a pulsed voltage of + V is repeatedly applied at a predetermined interval. In this case, negatively charged extinguishing agent particles are intermittently scattered, and no voltage is applied. During the period, there will be a spray of uncharged extinguishing agent particles.

FIG. 6 (E) shows a case where a pulsed voltage of −V is repeatedly applied at a predetermined interval. In this case, positively charged extinguishing agent particles are intermittently dispersed and voltage is applied. During periods when there is no charge, there will be a spread of uncharged extinguishing agent particles.

FIG. 6 (F) shows a case where a pulsed voltage of ± V is repeatedly applied alternately at a predetermined interval. In this case, the negatively charged extinguishing agent particles and the positively charged extinguishing agent particles are intervals. During the period when the voltage is not applied, the non-charged extinguishing agent particles are dispersed. A pulse voltage of ± V may be alternately applied repeatedly without providing such an interval.

In the applied voltage patterns illustrated in FIGS. 6C to 6F, the application period and the inversion period can be appropriately determined, and a combination of a plurality of patterns shown in FIGS. 6A to 6F. And so on.

As the voltage application unit 15 that supplies the application voltage of each pattern illustrated in FIG. 6 to the charging / spreading head 10, a commercially available boosting unit with a control input can be used. Some commercially available boosting units output, for example, DC to 20 kilovolts when DC 0 to 20 volts is applied to the input, and such boosting units can be used.

FIGS. 7A and 7B show another embodiment of the charging and spreading head 10 shown in FIGS. 1 and 2, and FIG. 7A shows a longitudinal section, and FIG. This embodiment is characterized in that the induction electrode is arranged below the thin film flow formed by the deflector.

In this embodiment, a frame 50 having a frame structure extending in a fan shape from the lower end of the body 38 along the lower side of the thin film flow 56 formed by deflection by the deflector 42 is integrally formed as shown in FIG. A semicircular ring-shaped induction electrode portion 48 is arranged on the front end side of the frame 50 in the vicinity of the splitting separation portion P so as to face the thin film flow 56 or the splitting separation portion P. Other configurations and functions are the same as those of the embodiment of FIGS. 3A and 3B.

In the case where the induction electrode portion 48 is disposed below the splitting separation portion P of the thin film flow 56 deflected by the deflector 42 as described above, the fire extinguisher sprayed from the nozzle portion 40 as in the embodiment of FIGS. 3A and 3B. Is converted into a thin film flow 56 having a directivity spreading downward in a fan shape along the deflector 42, and the thin film flow 56 starts to split and separate from the vicinity of the split separation portion P and is converted into a particle swarm flow 58. The extinguishing agent particles are charged by the action of an external electric field generated by applying a voltage to 48, and the charged extinguishing agent particles can be scattered with directivity.

In the above-described embodiment, the deflector 42 is formed integrally with the nozzle portion 40. However, the deflector 42 may be arranged as a separate member, or when the deflector 42 is a separate member, the frame 50 is used. It may be arranged on the side.

In addition, the applied voltage pattern to the charging and spreading head is set such that the induction electrode side is alternately plus / minus applied voltage with respect to the extinguishing agent side electrode part, only the plus voltage is applied, or only the minus voltage is applied. Whether to do this can be determined as appropriate according to the situation on the combustion member side to be spread. Of course, the period of application and inversion can be determined as appropriate.

Further, the charging spraying head and the charging spraying method of the present invention can be used for various purposes only for fire extinguishing, fire prevention, or smoke suppression only.

Further, the present invention is not limited to fire extinguishing, and includes a charging spraying device (equipment) for charging and spraying a water-based spraying agent in an appropriate spraying section, a charging spraying head, and a charging method for the charging spraying device. In this case, the extinguishing agent and the extinguishing agent side electrode part in the above embodiment may be read as the spraying agent and the spraying agent side electrode part.

Further, as the fire extinguishing agent charged and sprayed by the charging spray head of the present invention, spraying agents such as water or various water-based fire extinguishing agents can be applied.

Further, in the charging / spreading head 10 of the present embodiment, the induction electrode portion 48 is formed by insulating coating with an insulating material, so that water contacts the induction electrode portion 48 and short circuit or charge neutralization occurs. Therefore, safety can be ensured and the particle swarm 58 (charged spray water) can be suitably generated.

Further, Table 1 shows a case where the ejection flow rate (spray water amount) is 1 L / min, the applied voltage applied by the induction electrode unit 48 is +5 kV, the induction electrode unit 48 is formed without providing an insulating coating, and various insulating materials. The result of measuring the specific charge of the particle group flow 58 in the case where the induction electrode portion 48 is formed by insulating coating in FIG. From this result, it was confirmed that when a polyamide synthetic resin (nylon: registered trademark) or a polyethylene resin is used as an insulating material, the specific charge is significantly reduced as compared with a case formed without providing an insulating coating.

On the other hand, when polyvinyl chloride resin, polyphenylene sulfide resin (PPS), urethane resin, polytetrafluoroethylene resin, polychlorotrifluoroethylene resin, alumina ceramics, and glass bottles are used as insulating materials, an insulating coating is not provided. It was confirmed that the particle swarm 58 is generated with a specific charge equal to or higher than that of the formed case. Therefore, in the charging and spreading head 10 of the present embodiment, such polyvinyl chloride resin, polyphenylene sulfide resin (PPS), urethane resin, polytetrafluoroethylene resin, polychlorotrifluoroethylene resin, alumina ceramics, glass By forming the induction electrode portion 48 using at least one kind of soot as an insulating material, it is possible to suitably generate the particle group flow 58 while preventing short circuit and charge neutralization.

(Application to other uses)
The charged water particle spraying device of the present invention can also be applied as a fire extinguishing device. Also in this case, as described in, for example, Japanese Patent Application Laid-Open No. 2009-106405 and WO 2009/107421, good fire extinguishing can be achieved by efficiently wetting the combustion object to be dispersed by the action of charged water particles. An effect can be obtained, and the generation of smoke accompanying combustion can be suppressed, and the generated smoke can be captured to prevent diffusion. In addition to this, according to the charged water particle spraying device of the present invention, it is possible to extinguish a fire by properly spraying charged water particles from a distant place of the burned material toward the burned product, or to suppress the expansion of combustion. it can. In this case, as the insulating coating material for the induction electrode portion, it is more preferable to use ceramics or cocoons having excellent heat resistance and fire resistance.

The present invention includes appropriate modifications that do not impair the object and advantages thereof, and is not limited only by the numerical values shown in the above embodiments.

ADVANTAGE OF THE INVENTION According to this invention, even if the spraying amount increases, a fire disaster prevention device that secures a sufficient charge amount and exhibits a high fire extinguishing and smoke eliminating effect using Coulomb force and enables charging spraying having a predetermined directivity ( Equipment), charging spraying (spraying) head and charging spraying (spraying) method.

10: Charge spraying head 12: Pump unit 13: Manual valve 14: Water source 15: Voltage application unit 16: Pipe 18: Dedicated fire detector 20: Interlocking control relay device 22: Manual operation box 24: System monitoring control panel 26: Fire Sensor 28: Receiver 30: Pressure regulating valve 32: Automatic on-off valve 34: Falling pipe 36, 38: Body 40: Nozzle part 41: Nozzle hole 42: Deflector 43: Inlet 46: Fire extinguisher side electrode part 48: Induction Electrode unit 50: Frame 52: Voltage application cable 54: Earth cable 56: Thin film flow 58: Particle group flow P: Splitting separation unit

Claims

A fire extinguisher supply facility for supplying a water-based fire extinguisher via a pipe;
A charge spraying head that is installed in a protective compartment and charges and sprays the spray particles of the fire extinguisher pressurized by the fire extinguisher supply equipment;
A voltage applying unit for applying a charging voltage to the charging and spreading head;
A fire disaster prevention device comprising:
The charging spray head is
A nozzle for injecting the fire extinguishing agent into an external space;
A fire extinguishing agent side electrode portion disposed inside the nozzle and in contact with the fire extinguishing agent;
A deflection spraying member that splits and disperses into a particle group flow after deflecting the extinguishing agent from the nozzle into a semicircular or fan shape in an arbitrary direction to form a thin film flow;
An induction electrode portion disposed in the vicinity of the splitting separation portion of the thin film flow;
A fire disaster prevention device characterized by comprising:
The fire disaster prevention device according to claim 1, wherein the deflecting / dispersing member is a deflector that deflects the extinguishing agent discharged from the nozzle into a thin-film flow spreading in a semicircular or fan-like shape in a diagonally downward direction.
The fire disaster prevention device according to claim 2, wherein the induction electrode portion has a semicircular shape or a fan shape and is disposed on the upper side in the vicinity of the splitting and separating portion of the thin film flow formed by the deflector.
The fire disaster prevention device according to claim 2, wherein the induction electrode portion has a semicircular shape or a fan shape and is disposed below the splitting portion of the thin film flow formed by the deflector.
2. The fire disaster prevention device according to claim 1, wherein the induction electrode portion is one of a metal, a resin, a fiber bundle, rubber, or a composite having conductivity.
The fire disaster prevention device according to claim 1, wherein a part or all of the induction electrode portion is covered with an insulating material.
The fire extinguishing apparatus according to claim 1, wherein the extinguishing agent side electrode portion is at least a part of a supply flow path of the extinguishing agent in the electrification spraying head or the nozzle.
The fire disaster prevention device according to claim 1, wherein a voltage of the extinguishing agent side electrode portion is set to a predetermined reference value, and a predetermined charging voltage is applied to the induction electrode portion.
The fire disaster prevention device according to claim 8, wherein the predetermined charging voltage in a direct current, alternating current, or pulse shape is applied to the induction electrode portion.
A charge spraying head that is installed in a protective section and sprays the sprayed particles of the fire extinguisher supplied by the fire extinguisher supply equipment by charging by applying a charging voltage from a voltage application unit,
A nozzle for injecting the fire extinguishing agent into an external space;
A fire extinguishing agent side electrode portion disposed inside the nozzle and in contact with the fire extinguishing agent;
A deflection spraying member for deflecting the fire extinguisher exiting from the nozzle in a semicircular or fan shape in an arbitrary direction to form a thin film flow and then splitting and dispersing into a particle group flow;
An induction electrode portion disposed in the vicinity of the splitting separation portion of the thin film flow;
A charge spraying head characterized by comprising:
11. The charging spray head according to claim 10, wherein the deflecting spray member is a deflector that deflects the extinguishing agent discharged from the nozzle into a thin film flow that spreads in a semicircular or fan shape in a diagonally downward direction.
12. The charging / spreading head according to claim 11, wherein the induction electrode portion has a semicircular shape or a fan shape, and is disposed on an upper side in the vicinity of a splitting and separating portion of the thin film flow formed by the deflector.
12. The charging / spreading head according to claim 11, wherein the induction electrode portion has a semicircular shape or a fan shape, and is disposed below the splitting portion of the thin film flow formed by the deflector.
11. The charging / spreading head according to claim 10, wherein the induction electrode portion is one of a metal, a resin, a fiber bundle, rubber, or a composite having conductivity.
The charging / spreading head according to claim 10, wherein a part or all of the induction electrode portion is covered with an insulating material.
11. The charging spray head according to claim 10, wherein the extinguishing agent side electrode portion is at least a part of the supply path of the fire extinguishing agent in the charging spray head or the nozzle.
11. The charging spray head according to claim 10, wherein the voltage of the extinguishing agent side electrode portion is set to a predetermined reference value, and a predetermined charging voltage is applied to the induction electrode portion.
18. The charging / spreading head according to claim 17, wherein a predetermined charging voltage having a direct current, an alternating current, or a pulse shape is applied to the induction electrode portion.
In the event of a fire, supply a water-based fire extinguisher to the electrostatic spraying head installed in the protection zone via a pipe,
The fire extinguisher sprayed from the charging spray head is deflected into a semicircular or fan shape in an arbitrary direction to form a thin film flow, and then divided and dispersed into a particle group flow, near the splitting portion of the thin film flow Charging by applying an external electric field,
A fire extinguishing agent spraying method for a fire disaster prevention device.
The charging spray head is
A nozzle for injecting the fire extinguishing agent into an external space;
A fire extinguishing agent side electrode portion disposed inside the nozzle and in contact with the fire extinguishing agent;
A deflection spraying member that splits and disperses into a particle group flow after deflecting the extinguishing agent from the nozzle into a semicircular or fan shape in an arbitrary direction to form a thin film flow;
An induction electrode portion disposed in the vicinity of the splitting separation portion of the thin film flow,
An external electric field generated by applying a voltage between the induction electrode part and the extinguishing agent side electrode part is applied to the extinguishing agent in the vicinity of the splitting and separating part of the thin film flow by the deflecting scattering member to be charged. The fire-extinguishing agent spraying method for a fire disaster prevention device according to claim 19,
21. The fire extinguishing apparatus according to claim 20, wherein the deflecting and spreading member is a deflector that deflects the extinguishing agent discharged from the nozzle into a thin-film flow spreading in a semicircular or fan shape in an obliquely downward direction. Agent spraying method.
The fire extinguishing agent for a fire disaster prevention device according to claim 21, wherein the induction electrode portion has a semicircular shape or a fan shape, and is disposed on an upper side in the vicinity of the splitting and separating portion of the thin film flow formed by the deflector. Spraying method.
The fire extinguishing apparatus according to claim 21, wherein the induction electrode part has a semicircular shape or a fan shape, and is disposed below the splitting part of the thin film flow formed by the deflector. Agent spraying method.
The fire extinguishing agent spraying method for a fire disaster prevention device according to claim 20, wherein the induction electrode portion is one of a metal, a resin, a fiber bundle, rubber, or a composite having conductivity.
The fire extinguishing agent spraying method for a fire disaster prevention device according to claim 20, wherein a part or all of the induction electrode part is covered with an insulating material.
The fire extinguishing agent spraying method for a fire disaster prevention device according to claim 20, wherein the extinguishing agent side electrode portion is at least a part of the supply path of the extinguishing agent in the charging spraying head or the nozzle.
The fire extinguishing agent spraying method for a fire disaster prevention device according to claim 20, wherein a voltage of the extinguishing agent side electrode portion is set to a predetermined reference value, and a predetermined charging voltage is applied to the induction electrode portion.
The fire extinguishing agent spraying method for a fire disaster prevention device according to claim 27, wherein a predetermined charging voltage in a direct current, alternating current or pulse shape is applied to the induction electrode portion.
A spray agent supply facility for supplying a water-based spray agent via a pipe;
A charged spraying head installed in a spraying section and charged by spraying spray particles of the spraying agent supplied by the spraying agent supply facility;
A voltage applying unit for applying a charging voltage to the charging and spreading head;
An electrostatic spraying device comprising:
The charging spray head is
A nozzle for injecting the spray agent into an external space;
A spraying agent side electrode portion disposed inside the nozzle and in contact with the spraying agent;
A deflecting spraying member that splits and sprays a particle group flow after forming the thin film flow by deflecting the spraying agent from the nozzle in a semicircular or fan shape in an arbitrary direction;
And an induction electrode portion disposed in the vicinity of the splitting and separating portion of the thin film flow.
30. The electrification spray device according to claim 29, wherein the deflecting spray member is a deflector for deflecting the spraying agent discharged from the nozzle into a thin film flow spreading obliquely downward in a semicircular or fan shape.
31. The charging / spreading apparatus according to claim 30, wherein the induction electrode portion has a semicircular shape or a fan shape, and is disposed on an upper side in the vicinity of the splitting and separating portion of the thin film flow formed by the deflector.
31. The charging / spreading apparatus according to claim 30, wherein the induction electrode portion has a semicircular shape or a fan shape, and is disposed below the splitting portion of the thin film flow formed by the deflector.
The induction electrode part is a conductive metal,
30. The charging / spreading apparatus according to claim 29, wherein the charging / spreading apparatus is any one of a resin, a fiber bundle, rubber, or a composite.
30. The charging / spreading apparatus according to claim 29, wherein a part or all of the induction electrode portion is covered with an insulating material.
30. The electrification spraying device according to claim 29, wherein the spraying agent side electrode portion is at least a part of the spraying agent supply flow path in the charging spraying head or the nozzle.
30. The charging spraying device according to claim 29, wherein the voltage of the spraying agent side electrode part is set to a predetermined reference value, and a predetermined charging voltage is applied to the induction electrode part.
37. The charging and dispersing apparatus according to claim 36, wherein a predetermined charging voltage that is a direct current, an alternating current, or a pulse shape is applied to the induction electrode portion.
A charging spraying head that is installed in the spraying section and is charged and sprayed on the spray particles of the spraying agent supplied by the spraying agent supply facility by applying a charging voltage from a voltage application unit,
A nozzle for injecting the spray agent into an external space;
A spraying agent side electrode portion disposed inside the nozzle and in contact with the spraying agent;
A deflecting spraying member that splits and sprays a particle group flow after forming the thin film flow by deflecting the spraying agent exiting the nozzle in a semicircular or fan shape in an arbitrary direction;
And an induction electrode portion disposed in the vicinity of the splitting and separating portion of the thin film flow.
39. The electrification spraying head according to claim 38, wherein the deflection spraying member is a deflector for deflecting the spraying agent discharged from the nozzle into a thin film flow spreading in a semicircular or fan shape in an obliquely downward direction.
40. The charging / spreading head according to claim 39, wherein the induction electrode portion has a semicircular shape or a fan shape, and is disposed on an upper side in the vicinity of a split separation portion of the thin film flow formed by the deflector.
40. The charging / spreading head according to claim 39, wherein the induction electrode portion has a semicircular shape or a fan shape, and is disposed below the splitting portion of the thin film flow formed by the deflector.
39. The charging / spreading head according to claim 38, wherein the induction electrode portion is one of a metal, a resin, a fiber bundle, rubber, or a composite having conductivity.
The charging / spreading head according to claim 38, wherein a part or all of the induction electrode portion is covered with an insulating material.
39. The charging spray head according to claim 38, wherein the spraying agent side electrode portion is at least a part of the spraying agent supply flow path in the charging spraying head or the nozzle.
The charging spray head according to claim 38, wherein a voltage of the spray agent side electrode portion is set to a predetermined reference value, and a predetermined charging voltage is applied to the induction electrode portion.
46. The electrification spraying head according to claim 45, wherein a predetermined charging voltage in the form of direct current, alternating current or pulse is applied to the induction electrode portion.
Supply the water-based spraying agent to the electrified spraying head installed in the spraying section via the pipe,
The spraying agent sprayed from the electrification spraying head is deflected in a semicircular or fan shape in an arbitrary direction to form a thin film flow, and then divided and dispersed into a particle group flow, in the vicinity of the splitting portion of the thin film flow Charging by applying an external electric field,
A charging method for a charging spraying device.
The charging spray head is
A nozzle for injecting the spray agent into an external space;
A spraying agent side electrode portion disposed inside the nozzle and in contact with the spraying agent;
A deflecting spraying member that splits and sprays a particle group flow after forming the thin film flow by deflecting the spraying agent exiting the nozzle in a semicircular or fan shape in an arbitrary direction;
An induction electrode portion disposed in the vicinity of the splitting separation portion of the thin film flow;
With
An external electric field generated by applying a voltage between the induction electrode part and the spraying agent side electrode part is applied to the spraying agent in the vicinity of the splitting part of the thin film flow by the deflecting spraying member to be charged. 48. A spraying method for a charge spraying device according to claim 47, wherein:
49. The spray of the charging spraying device according to claim 48, wherein the deflecting spraying member is a deflector for deflecting the spraying agent discharged from the nozzle in a thin film flow spreading in a semicircular or fan shape in an obliquely downward direction. Method.
50. The spraying method of the charge spraying device according to claim 49, wherein the induction electrode part has a semicircular shape or a fan shape, and is disposed on the upper side in the vicinity of the splitting and separating part of the thin film flow formed by the deflector. .
50. The distribution of the charging distribution apparatus according to claim 49, wherein the induction electrode unit has a semicircular shape or a fan shape and is disposed below the splitting portion of the thin film flow formed by the deflector. Method.
49. The spraying method of the charging spraying apparatus according to claim 48, wherein the induction electrode part is one of a metal, a resin, a fiber bundle, rubber, or a composite having conductivity.
49. A spraying method for a charge spraying device according to claim 48, wherein a part or all of the induction electrode portion is covered with an insulating material.
49. The spraying method of the charging spraying device according to claim 48, wherein the spraying agent side electrode portion is at least a part of the spraying agent supply flow path in the charging spraying head or the nozzle.
49. A spraying method for a charging spraying apparatus according to claim 48, wherein the voltage of the spraying agent side electrode part is set to a predetermined reference value, and a predetermined charging voltage is applied to the induction electrode part.
56. A spraying method for a charging spraying device according to claim 55, wherein a predetermined charging voltage in the form of a direct current, an alternating current or a pulse is applied to the induction electrode portion.