JP2003208672A - Smoke screen generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a smoke screen generator capable of instantaneously (in a short time) interrupting a visual field with smoking and intimidating with sounding without requiring a device such as heater or accumulator, to provide a smoke screen generator capable of improving the diffusibility of smoke screen by the number of fuming ports and the angle of fuming direction, and to provide a smoke screen generator capable of generating a required smoking quantity in a short time within a limited space. <P>SOLUTION: This generator provided with an ignition device, a smoking agent which is burnt by the ignition device to generate smoke, and a combustion chamber for housing the smoking agent, which comprises the fuming port for blowing the gas smoke generated by the combustion of the smoking agent, is characterized in that a pressure holding member for holding the pressure of the gas smoke is provided on the fuming port. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mainly for warning or intimidating a thief or an intruder with smoke and sound (firing sound), and at the same time, the smoke hinders the view and suppresses or delays the action. The present invention relates to a smoke screen generator that suppresses and prevents criminal acts such as stealing protected properties.

[0002]

2. Description of the Related Art Conventionally, a device for emitting smoke has been used for emergency, rescue, crime prevention, disaster drill, stage performance, and frost damage prevention for plants. For emergency and rescue, there is a signal tube (for example, see Patent Document 1). It is disclosed in this signal tube that a smoke emitting agent is ignited to vigorously emit smoke from one direction of the tube body. Further, there is a smoke generating device for disaster prevention training or for preventing frost damage on plants (for example, refer to Patent Document 2). It is disclosed in this smoke-generating device that a liquid is heated and held so that a plurality of heating vaporization devices vigorously emit smoke.

For crime prevention, there is a crime prevention smoke screen device (see, for example, Patent Document 3). In this crime prevention smoke screen device, a gas ejector equipped with a gas tank filled with carbon dioxide gas has a double structure, and a large number of gas discharge holes are provided in a gas short pipe arranged in an inner cylinder of the gas ejector. By arranging over the entire length in the longitudinal direction, and extending in the longitudinal direction a gas ejection slit that communicates with the inside of the upper part of the outer cylinder,
It is disclosed that the high-pressure gas is instantly and uniformly ejected as a wide curtain-shaped smoke screen.

[0004]

[Patent Document 1] Japanese Unexamined Patent Publication No. 9-126698

[Patent Document 2] Japanese Unexamined Patent Publication No. 6-212587

[Patent Document 3] Japanese Utility Model Laid-Open No. 6-25987

[0005]

However, as in the signal tube described above, if the smoke outlet is in one direction, the direction of the smoke is limited, which is disadvantageous to the diffusion of smoke and blocks the view. There was a problem that it took time. Further, like the above-described smoke generating device, a method of heating and holding a liquid and continuously emitting smoke from a plurality of heating vaporization devices has a small amount of smoke generation per unit time, and it takes time to obtain a desired amount of smoke. There was a problem.

Further, like the above-mentioned crime prevention smoke screen device,
A method of holding gas in a gas tank at a high pressure and instantly ejecting a wide curtain-shaped smoke curtain from a plurality of gas discharge holes through gas ejection slits has a limited ejection direction and smoke is in a curtain shape. There was a problem that it took time to diffuse the. The present invention has been made to solve the above problems, and an object thereof is to eliminate the need for a device such as a heating device or a pressure accumulator, to instantaneously (shortly) interrupt the field of view by smoking, and to intimidate by sounding. It is to provide a smoke screen generator capable of performing the above.

Another object of the present invention is to provide a smoke screen generator capable of improving the diffusivity of the smoke screen by adjusting the number of smoke outlets and the angle of the smoke direction. Also,
Another object of the present invention is to provide a smoke screen generator capable of generating a required amount of smoke in a limited space in a short time. Another object of the present invention is to improve the diffusiveness of the smoke screen from the smoke outlet (intensify the force of gas smoke ejection) and to block the visibility in a limited space in a short time without (difference in) concentration. It is an object of the present invention to provide a smoke screen generator capable of achieving the above condition.

Another object of the present invention is to provide a smoke screen generator capable of concentrating gas smoke on a protective object.

[0009]

The invention according to claim 1 is
An igniter, a smoke generating agent that burns and smokes by the igniter, and a combustion chamber that accommodates the smoke generating agent by providing a smoke outlet for ejecting gas smoke generated by the combustion of the smoke generating agent to the outside, and the smoke outlet Is provided with a pressure holding member for holding the pressure of the gas smoke. According to a second aspect of the invention, in the smoke screen generating apparatus according to the first aspect, the smoke outlet is provided on one side surface of the combustion chamber and on another side surface different from the one side surface.

According to a third aspect of the present invention, in the smoke screen generating apparatus according to the first aspect, the smoke outlet is provided on one side surface of the combustion chamber. According to a fourth aspect of the present invention, in the smoke screen generating apparatus according to any one of the first to third aspects, the outer periphery of the combustion chamber is surrounded, and the flow path of gas smoke ejected from the smoke outlet is changed. It is characterized by further comprising a gas smoke flow path control member.

According to a fifth aspect of the present invention, in the smoke screen generating apparatus according to the fourth aspect, the gas smoke flow path control member is a tubular member attached to the combustion chamber, and an opening end side of the tubular member. And a cone-shaped skirt member whose diameter increases toward the front. According to a sixth aspect of the present invention, an ignition device, a smoke generating agent that burns and smokes by the ignition device, a combustion chamber that includes a smoke outlet that ejects gas smoke generated by the combustion of the smoke generating agent, and a combustion chamber that accommodates the smoke generating agent, A jet chamber having a smoke outlet for ejecting the gas smoke to the outside, which is arranged adjacent to the combustion chamber, and a pressure holding member for holding the pressure of the gas smoke is provided in the smoke outlet provided in the combustion chamber. It is characterized by being provided.

According to a seventh aspect of the present invention, in the smoke screen generating apparatus according to the sixth aspect, the smoke outlet provided in the ejection chamber is provided on one side surface of the ejection chamber and on another side surface different from the one side surface. It is characterized by The invention according to claim 8 is the smoke screen generating apparatus according to claim 6, characterized in that the smoke outlet provided in the ejection chamber is provided on one side surface of the combustion chamber.

According to a ninth aspect of the present invention, in the smoke screen generating apparatus according to any one of the sixth to eighth aspects, the flow of the gas smoke ejected from the smoke outlet is surrounded by the outer periphery of the ejection chamber. It is characterized by further comprising a gas smoke flow path control member for changing the path. According to a tenth aspect of the present invention, in the smoke screen generator according to the ninth aspect, the gas smoke flow path control member is a tubular member attached to the ejection chamber, and expands toward an opening end side of the tubular member. A cone-shaped skirt member having a diameter. The invention according to claim 11 is claim 2, claim 3, claim 4, claim 7,
In the smoke screen generating apparatus according to any one of claims 8 and 9, the smoke outlet has an ejection angle of 45 ° to 135 ° with respect to one side surface or the other side surface.

According to a twelfth aspect of the present invention, in the smoke screen generating apparatus according to any one of the second, fourth, seventh, ninth and tenth aspects, the smoke outlet is on one side surface. And the total opening area on the other side,
It is characterized by having the same or different total opening area. The invention according to claim 13 is claim 1 to claim 1.
2. The smoke screen generator according to any one of 2 above, wherein the number of the combustion chambers is one.

According to a fourteenth aspect of the present invention, in the smoke screen generating apparatus according to any one of the first to thirteenth aspects,
The pressure holding means is a nozzle or a nozzle closure. According to a fifteenth aspect of the present invention, in the smoke screen generating apparatus according to any one of the first to fourteenth aspects, the smoke generating agent has a burning rate of 6000 mm / sec under a pressure of 5 to 6 MPa. And

According to a sixteenth aspect of the present invention, in the smoke screen generating apparatus according to any one of the first to fifteenth aspects,
The fuming agent is characterized in that gas smoke is produced when the fumes are ejected from the fumes. The invention according to claim 17 is claim 1
In the smoke screen generator described in 6, the pronunciation is 100 to
It is characterized by being 140 dB.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIGS. 1 to 3 show a smoke screen generating apparatus 1 according to a first embodiment of the present invention (corresponding to claims 1, 2, and 11 to 17). The smoke screen generating apparatus 1 according to the present embodiment includes an ignition device 2, a smoke generating agent 6 that burns and smokes by the ignition apparatus 2, and a combustion chamber 10 that stores the smoke generating agent 6.

The ignition device 2 includes an igniter 3 and the igniter 3.
And an ignition powder 5 which is filled in the ignition powder case 4, amplifies the energy from the igniter 3 and propagates the combustion to the smoke producing agent 6, and the ignition powder 5
It is installed in the central portion of the combustion chamber 10 in order to uniformly propagate the combustion flame from the smoke generating agent 6. The igniter 3 has a heating element 3a that generates heat when energized and an ignition charge 3b that is ignited by the heating element 3a. Here, tricinate was used as the ignition charge. The igniter 3 is joined to the cap 7 and placed on the opening of the ignition charge case 4.

The igniting agent case 4 is a bottomed cylindrical body made of aluminum and having one side opened so that the flame of the igniting agent 5 burned by the flame from the igniter 3 can be uniformly propagated to the smoke emitting agent 6. A plurality of ignition holes 4a are provided on the circumference of the body. An aluminum tape 4b is attached to the ignition hole 4a so as to close the ignition hole 4a in order to prevent moisture and maintain the internal pressure during combustion of the ignition agent.

The smoke generating agent 6 is formed by tableting a composition of zinc oxide, ammonium perchlorate, vinyl chloride and calcium carbonate. The tablet-shaped smoke generating agent 6 is adjusted so that the burning rate is about 6,000 mm / sec under a pressure of 5 MPa, depending on the composition ratio, the particle size of each composition, and the like. Further, the smoke exits 8a, 8b of the combustion chamber 10 and the tablet size are set so that the combustion end time is about 0.5 seconds.

The combustion chamber 10 has a first vent hole 8 on the circumferential side surface.
a and a chamber 8 having a bottomed cylindrical body having a second smoke outlet 8b on the bottom surface and a disk-shaped cap 7 having a through hole 7a for the igniter 3 in the center, the outer periphery of the cap 7 being a chamber. After being welded to the inner circumference of 8, it is sealed by being fixed by a caulking portion. The chamber 8 is made of stainless steel having a plate thickness of about 1 mm.

The combustion chamber 10 is provided with nozzle closures 9a, 9b for controlling the combustion speed of the smoke generating agent 6, closing the first smoke outlet 8a and the second smoke outlet 8b, and maintaining the airtightness of the combustion chamber 10. It is arranged. As a result, the nozzle closures 9a, 9b contain the gas pressure generated by the combustion of the ignition powder in the combustion chamber, and hold the pressure in the combustion chamber until the smoke generating agent 6 can start combustion at a predetermined combustion speed. To burn.

Further, the pressure to be maintained is set to the respective smoke outlets (8a, 8a).
It can be arbitrarily set according to the sectional area of b) and the mechanical strength of the nozzle closure. Here, the first smoke outlet 8a provided on the circumferential side surface and the second smoke outlet 8 provided on the bottom surface.
b and will be described in more detail. In this example, the first smoke outlet 8a provided on the circumferential side surface and the second smoke outlet 8b provided on the bottom surface are provided at an angle of about 90 °.

The first smoke outlet 8a and the second smoke outlet 8b are
Both had a diameter of about 3 mm and eight openings. As a result, the combustion flame (smoke or the like) in the combustion chamber 10 passes through the first smoke outlet 8a and the second smoke outlet 8b and is ejected at an angle of about 90 ° to stretch the smoke curtain. In order to diffuse the smoke in a wide range, the first smoke outlet 8a is installed on the circumference, and the smoke is ejected radially (360 ° direction).

Further, in the limited space, the smoke ejected from the first smoke outlet 8a collides with the wall forming the space. Therefore, when the device is installed on any wall surface forming the space, a gas flow is generated along the wall, whereby smoke is diffused into the space. At the same time, the second smoke outlet 8b is also installed on the bottom surface of the chamber 8.

As a result, the number of smoke outlets is increased, so that the smoke emission direction can be increased by the smoke from the first smoke outlet 8a and the smoke from the second smoke outlet 8b, and the smoke diffusion can be improved. ing. Thus, in this embodiment, the first smoke outlet 8a provided on the circumferential side surface and the second smoke outlet 8b provided on the bottom surface.
Is the final outlet through which smoke is ejected to the outside of the device, so it is opened to the atmosphere without any resistance after passing. Therefore, the amount of smoke ejected is equal to the ratio of the total opening area of each of the first smoke outlets 8a and the second smoke outlets 8b. For example, when the ratio of the total opening areas of the first smoke outlet 8a and the second smoke outlet 8b is 4: 6, 40% of the total smoke amount is ejected in the circumferential direction and 60% is ejected in the axial direction.

The first smoke outlet 8a and the second smoke outlet 8
For b, the opening area of the nozzle is set so that the internal pressure of the combustion chamber 10 becomes 5 to 6 MPa. Further, it is possible to control the ratio of the amount of smoke in each direction of smoke in accordance with the shape of the target space by the ratio of the opening area of the first smoke outlet 8a and the second smoke outlet 8b. Next, the operation of the smoke screen generator 1 according to the present embodiment will be described.

The smoke screen generating apparatus 1 according to this embodiment is installed, for example, on the ceiling of a vault. And, for example,
When the anomaly detection sensor detects illegal intruders such as robbery,
An operation signal (ignition current) is sent to the smoke screen generator 1. In the smoke screen generator 1, a constant current flows through the igniter 3, which ignites the ignition charge, and the ignition charge 5 burns due to the flame and impact.

The flame of the ignition charge 5 propagates from the ignition hole 4a of the ignition charge case 4 to the smoke generating agent 6, and the combustion gas smoke raises the internal pressure of the combustion chamber 10. Then, the inner pressure of the combustion chamber 10 causes the nozzle closures 9a and 9b that close the first smoke outlet 8a and the second smoke outlet 8b to reach the elastic limit and break. In addition, the gas smoke generated by the combustion of the smoke generating agent 6 is ejected from the first smoke outlet 8a and the second smoke outlet 8b.

Further, since the gas smoke produced by the combustion of the smoke generating agent 6 passes through the first smoke outlet 8a and the second smoke outlet 8b at a speed exceeding the speed of sound, a sound is produced. This allows
Smoke screens that block sight are spread in the safe room. Here, the case where an illegal intruder such as a robbery is detected by the abnormality detection sensor has been described. However, when the guard confirms an illegal intruder such as a robbery, a start switch for contacting the smoke screen generator 1 is set. It can be operated in the same manner by manually inserting it.

In the present embodiment, the case where the first smoke outlet 8a and the second smoke outlet 8b are provided has been described.
It is also possible to close one of the smoke outlets and provide the smoke outlet only on one side surface to discharge the gas smoke from one direction (corresponding to claim 3). Further, a smoke outlet may be provided at a boundary portion between the bottom plate and the side plate of the chamber 8 so that the gas smoke is emitted from the lower peripheral edge of the smoke screen generator 1.

(Second Embodiment) FIGS. 4 to 6 show a smoke screen generator 20 according to a second embodiment of the present invention (corresponding to claim 6, claim 7, claim 11 to claim 17). ). The smoke screen generating apparatus 20 according to the present embodiment includes an ignition device 22 and a smoke generating agent 2 that burns and smokes by the ignition device 22.
6, a combustion chamber 30 containing the smoke generating agent 26, and an ejection chamber 31 disposed adjacent to the combustion chamber 30.

In the smoke screen generator 20 according to the present embodiment, the ejection chamber 31 is disposed adjacent to the combustion chamber 30, and the gas smoke is emitted from the ejection chamber 31 without being emitted from the combustion chamber 30. This is different from the smoke screen generator 1 according to the embodiment. Combustion chamber 3
The bottomed chamber 28 made of stainless steel and having a plate thickness of about 1.5 mm, which forms 0, has a through hole 27a for the igniter 23 in the center so as to form the ejection chamber 31 adjacent to the combustion chamber 30. A bottomed cover portion 28b protruding outward from a joint portion 28x with the disk-shaped cap 27 and a flange portion 28c protruding further outward from the cover portion 28b are provided.

The side wall of the chamber 28 is provided with a smoke outlet 28a corresponding to the first smoke outlet 8a in the first embodiment. The smoke outlet 28a has a nozzle closure 29a for controlling the combustion speed of the smoke generating agent 26 to close the smoke outlet 28a and maintain the airtightness of the combustion chamber 30, and the smoke generating agent 2
The filter 29b for collecting the residue generated after the combustion of No. 6 is arranged so as to overlap.

As a result, the nozzle closure 29a is
The gas pressure generated by the combustion of the ignition agent is confined in the combustion chamber, and the pressure in the combustion chamber is maintained until the smoke generating agent 26 can start combustion at a predetermined combustion speed, and the smoke generating agent 26 is guided to combustion.
Further, the pressure to be held can be arbitrarily set according to the cross-sectional area of the first smoke outlet 28a and the mechanical strength of the nozzle closure.

Inside the combustion chamber 30, a smoke generating agent 26 and cushioning materials 30a and 30b for holding (removing) the smoke generating agent 26 are vertically arranged so as to surround the smoke generating agent 26. Furthermore, a spacer 3 for adjusting the volume
0c is arranged on the cushion material 30a side. Spout chamber 3
Reference numeral 1 denotes a cylindrical cover member 32 that surrounds the cover portion 28b of the chamber 28 and the smoke outlet 28a side of the chamber 28, and the combustion chamber 3
No. 0 smoke outlet 28a and a cylindrical partition member 33 arranged so as to surround the smoke outlet 28a at a predetermined interval, and the partition member 33 is supported and fixed to the cover portion 28b of the chamber 28 together with the cover member 32. Partition member 34
It consists of and.

In the ejection chamber 31, the smoke outlet 28 of the combustion chamber 30 is provided.
A first chamber 31a communicating with a, a second chamber 31b communicating with the first chamber 31a, and a third chamber 31c communicating with the second chamber 31b are formed. Here, the first chamber 31a
Guides the gas smoke ejected from the smoke outlet 28a of the combustion chamber 30 to the second chamber 31b, and the second chamber 31b guides the gas smoke to the third chamber 31c through the hole 34a of the partition member 34 and the third chamber 31c. Three
1c discharges gas smoke from the first smoke outlet 32a provided on the side wall and the second smoke outlet 32b provided on the bottom surface.

The first smoke outlet 32a provided on the side wall and the second smoke outlet 32b provided on the bottom surface are provided on the bottom surface and the first smoke outlet 8a provided on the circumferential side surface in the first embodiment. Similar to the second smoke outlet 8b, both are provided at an angle of about 90 °. Here, the first smoke outlet 32a and the second smoke outlet 32
b will be described in detail. The first smoke outlet 32a is installed in the body to diffuse the smoke over a wide range, and has a structure that ejects the smoke radially (360 ° direction).

The first smoke outlet 32a has a diameter of about 8 mm and 20 outlets in consideration of the strength of the container. Further, in the limited space, the smoke ejected from the first smoke outlet 32a collides with the wall forming the space. Therefore, when the device is installed on any wall surface forming the space, a gas flow is generated along the wall, whereby smoke is diffused into the space.

At the same time, the second smoke outlet 32b is connected to the ejection chamber 3
It is also installed on the bottom of 1. As a result, the smoke ejection direction is increased, and the smoke from the first smoke outlet 32a and the second smoke outlet 3
Smoke from 2b changes the direction of smoke and improves smoke diffusion. In the above-described first embodiment, since there is no resistance to the gas smoke that has passed through the first smoke outlet 8a and the second smoke outlet 8b, the first smoke outlet 8a and the second smoke outlet 8b.
The amount of smoke is distributed according to the opening area ratio.

On the other hand, in the present embodiment, the combustion chamber 30
The gas smoke in the inside passes through each resistor as described below, so that the gas smoke is perpendicular to the surface of the second smoke outlet 32b (the first smoke outlet 3
Since a gas smoke flow path is formed parallel to the surface 2a), smoke is more likely to be emitted from the second smoke outlet 32b, and the first smoke outlet 3
Smoke is less likely to occur in 2a. Here, the gas smoke passage path is the smoke outlet 28a of the combustion chamber 30 → first chamber 31a → second chamber 31b.
→ third chamber 31c → first plume 32a and second plume 3
2b.

Therefore, as described in Experimental Example 5 which will be described later, the first smoke outlet 32a having a diameter of 8 mm and the diameter 6 are provided.
When the number of the second smoke outlets 32b of 20 mm is 20 each, most of the smoke amount is ejected from the second smoke outlet 32b (axial direction) and slightly emitted from the first smoke outlet 32a. Occur. Further, the ratio of the amount of smoke emitted from the first smoke outlet 32a and the second smoke outlet 32b is such that the opening area of the first smoke outlet 32a is fixed to 8 mm and the number of smoke outlets is fixed to 20 and the diameter of the second smoke outlet 32b is changed to the diameter. In the case of 6 mm, when the number of the smoke outlets of the second smoke outlet 32b is increased, there is a relation that the amount of smoke from the second smoke outlet 32b is larger than that of the first smoke outlet 32a. Further, in this case, when the number of the second smoke outlets 32b exceeds 12, most of the smoke is emitted from the second smoke outlet 32b and the amount of the smoke emitted from the first smoke outlet 32a is small.

The second smoke outlet 32b has a diameter of about 6 mm in view of the combined size of the parts. The internal pressure of the combustion chamber 30 is controlled by the smoke outlet 28a, and the second smoke outlet 32b.
Since the opening area of 2 does not affect the internal pressure control,
The number of 2b can be set up to about 30 which is the maximum number allowed in terms of dimensions, and an optimum number can be set according to the shape of the target space.

Next, the smoke screen generator 20 according to the present embodiment.
The action of will be described. The smoke screen generator 20 according to the present embodiment is installed, for example, on the ceiling of a vault. Then, for example, when the abnormality detection sensor detects an illegal intruder such as a robbery, an operation signal (ignition current) is sent to the smoke screen generator 20.

First, when a constant current flows through the igniter 22, the ignition charge 23b is ignited, and the ignition charge 25 is burned by the flame and impact. The flame of the ignition charge 25 propagates from the ignition hole 24a of the ignition charge case 24 to the smoke generating agent 26, and the combustion gas smoke increases the internal pressure of the combustion chamber 30. Then, the internal pressure of the combustion chamber causes the nozzle closure 29a blocking the smoke outlet 28a to reach the elastic limit and break.

Further, the gas smoke generated by the combustion of the smoke generating agent 26 passes from the filter 29b and the nozzle closure 29a through the smoke outlet 28a, and from the first chamber 31a blocked by the partition member 33 of the jet chamber 31 to the second chamber 31a. It flows into the chamber 31b, further passes through the hole 34a of the partition member 34, flows into the third chamber 31c, and smoke is ejected from the first smoke outlet 32a and the second smoke outlet 32b.

Further, since the gas smoke produced by the combustion of the smoke generating agent 26 passes through the smoke outlet 28a at a speed exceeding the speed of sound, sound is emitted. As a result, the smoke screen that blocks the field of view diffuses into the safe room. Although the case where an illegal intruder such as a robbery is detected by the abnormality detection sensor has been described here, when a security officer confirms an illegal intruder such as a robbery, a start switch for contacting the smoke screen generator 20 is set. It can be operated in the same manner by manually inserting it.

Further, in this embodiment, the first smoke outlet 32a
Also, the case where the second smoke outlet 32b is provided has been described, but it is also possible to close one of the smoke outlets and provide the smoke outlet only on one side surface to discharge the gas smoke from one direction. 8). Further, a smoke outlet may be provided at a boundary portion between the bottom plate and the side plate of the ejection chamber 31 so that the gas smoke is emitted from the lower peripheral edge of the smoke screen generator 20.

Next, the smoke screen generator 2 according to the second embodiment.
Various experiments were performed for 0, and the results are shown. (Experimental Example 1) As shown in FIG. 7, a room 50 having a width of about 5.3 m, a depth of about 2.1 m and a height of about 2.3 m (about 26 m ³ ).
The smoke screen generating apparatus 20 according to the present embodiment was installed at a position 30 cm from the ceiling side in the central part of the.

The first smoke outlet 32 of the device of Experimental Example 1
The numbers of a and the second smoke outlet 32b are 20 and 8 respectively.
It is an individual. At that time, a sound pressure measurement sensor 51 was installed to measure the sound pressure level. Next, the igniter was energized by remote control to operate the device. As a result, the combustion of the smoke generating agent is completed in about 0.5 seconds, and the smoke emits the first smoke outlet 32a and the second smoke outlet 32b in about 1 to 2 seconds after the smoke generating agent starts to burn.
Erupted from the outside. The relationship between the time and the pressure in the combustion chamber is as shown in FIG. 8, and it can be seen that the pressure in the combustion chamber becomes atmospheric pressure after about 0.5 seconds and the pressure in the combustion chamber is released. Therefore, it can be determined that the combustion of the smoke generating agent is completed after about 0.5 seconds.

Immediately after the operation, 0.2 seconds later, and 0.5
The smoking situation after a second is shown in FIGS. 9 (A), (B), and (C), respectively. Then, the smoke that is ejected is discharged from each of the smoke outlets 32a and 32a.
There was no large deviation in the amount of smoke emitted from b, and it was diffused evenly around the device, and was diffused throughout the space in several tens of seconds. The smoke flow at that time is as shown in FIG.

At this time, a test worker entered the diffused smoke screen and confirmed the degree of visibility and the degree of freedom of movement. This test worker lost sight after tens of seconds,
We were able to confirm the effect of restraining behavior. In addition, the sound pressure level of the operating noise emitted from the burning of smoke generating agent to the jetting is about 1
It is about 20 to 130 dB, and when used for crime prevention,
It was found that at the same time as the threat of smoke, the threat of sound was possible.

(Experimental Example 2) In the same manner as in Experimental Example 1, room 5 was used.
The smoke screen generator 20 according to the present embodiment is installed at the center of 0. Here, the first smoke outlet 32a and the second smoke outlet 32
The numbers of b were 20 and 3, respectively.

Next, the ignition tool was energized by remote control to operate the device. Due to this, the combustion of smoke generating agent is about 0.5.
It ends in seconds, and the smoke is about 1 to 1 after the smoke generating agent starts to burn.
It was ejected from the smoke outlets 32a and 32b to the outside in 2 seconds. In addition, smoke generation states immediately after the operation, 0.2 seconds later, and 0.5 seconds later are shown in FIGS. 11 (A), (B), and (C), respectively.

Then, the ejected smoke is the first smoke outlet 32a.
A large amount of smoke was emitted from and the amount of gas ejected in the 360 ° circumferential direction was large, so the momentum in the circumferential direction increased, and the flow as shown in FIG. 12 was generated and diffused. At that time, the visibility and the degree of freedom were confirmed as in Experimental Example 1. As a result, it was confirmed that after several tens of seconds the visibility was lost and the behavior was suppressed.

(Experimental Example 3) A room 5 was prepared in the same manner as in Experimental Example 1.
The smoke screen generator 20 according to the present embodiment is installed at the center of 0. Here, the first smoke outlet 32a and the second smoke outlet 32
The numbers of b were 20 and 12, respectively.

Next, the ignition tool was energized by remote control to operate the device. Due to this, the combustion of smoke generating agent is about 0.5.
It ends in seconds, and the smoke is about 1 to 1 after the smoke generating agent starts to burn.
It was ejected from the smoke outlets 32a and 32b to the outside in 2 seconds. In addition, smoke generation states immediately after the operation, 0.2 seconds later, and 0.5 seconds later are shown in FIGS. 13 (A), 13 (B), and 13 (C), respectively.

The smoke thus ejected is discharged from the second smoke outlet 32b.
Since the amount of smoke emitted from the chamber was large and the amount of gas ejected in the axial direction was large, a flow as shown in FIG. 14 was generated and diffused. At that time, the visibility and the degree of freedom were confirmed as in Experimental Example 1. As a result, it was confirmed that after several tens of seconds the visibility was lost and the behavior was suppressed. (Experimental Example 4) As shown in FIG. 15, in the same room 50 as in Experimental Example 1, the first smoke outlet 32a and the second smoke outlet 32 are provided.
The smoke screen generators 20 according to the present embodiment, in which the numbers of b are 20 and 10 respectively, are installed near the center on the wall side having a height of about 1.2 m.

Next, the ignition device was energized by remote control to operate the device. Due to this, the combustion of smoke generating agent is about 0.5.
It ends in seconds, and the smoke is about 1 to 1 after the smoke generating agent starts to burn.
It was ejected from the smoke outlet in 2 seconds. The amount of smoke emitted from the second smoke outlet 32b is large, and the amount of gas ejected in the axial direction is large. Therefore, a flow as shown in FIG. 15 is generated and diffused.

At this time, the visibility and the degree of freedom were confirmed as in Experimental Example 1. As a result, it was confirmed that after several tens of seconds the visibility was lost and the behavior was suppressed. (Experimental Example 5) As shown in FIG. 16, in the same manner as in Experimental Example 1, the smoke screen generating device 20 according to the present embodiment is placed in the center of the room 50.
Was installed.

Here, the first smoke outlet (diameter 8 mm) 32
a and the number of second smoke outlets (diameter 6 mm) 32b are 20 for each.
I made it into an individual. Next, the igniter was energized by remote control to operate the device. As a result, the burning of the smoke generating agent is completed in about 0.5 seconds, and the smoke is about 1 to 2 after the smoke generating agent starts burning.
It was jetted out from the smoke outlets 32a and 32b in a second.

The smoke thus ejected is discharged from the second smoke outlet 32b.
The amount of smoke emitted from the air flow was large, and the amount of gas smoke emitted in the axial direction was large. Therefore, the smoke was generated and diffused as shown in FIG. At that time, as in Experimental Example 1, the visibility and the degree of freedom were confirmed. As a result, it was confirmed that after several tens of seconds, the field of vision was completely lost and the behavior was suppressed. (Experimental Example 6) In the same manner as in Experimental Example 1, the smoke screen generator 20 according to the present embodiment was installed in the center of the room 50.

Here, the smoke screen generating apparatus 2 according to the present embodiment
0 is the first smoke outlet 32a with a diameter of 8 mm and a diameter of 6 mm
The number of the second smoke outlets 32b is fixed to 20 and 8 respectively, and the opening area of the smoke outlets 28a is about 53 mm ² to about 275.
The sound pressure level during operation was measured with a sound pressure sensor while varying in the range of mm ² . The result is shown in FIG.

As is apparent from FIG. 18, the internal pressure of the combustion chamber 30 changes within the range of 2.6 to 14.4 MPa, and the sound pressure level at that time is 91 to 138 dB.
It was confirmed that the sound pressure level becomes higher when the internal pressure of is increased (= the opening area of the smoke outlet 28a is decreased). Further, from Table 1, it was confirmed that the sound pressure level of the device was known, and that a warning or intimidation by sounding could be made.

[0065]

[Table 1] FIG. 19 is a smoke screen generator 4 according to the third embodiment of the present invention.
0 (corresponding to claim 4 and claim 5). The smoke screen generator 40 according to the present embodiment differs from the smoke screen generator 1 according to the first embodiment in that a gas smoke flow path control member 41 is provided outside the combustion chamber 10.

The gas smoke flow path control member 41 is fixed to the chamber 8 via welding 44. The gas smoke flow path control member 41 is a tubular member 42 made of stainless steel having a plate thickness of 1.5 mm.
Attached to the inner surface of the tubular member 42, and the one opening end 43a of the tubular member 42 to the other opening end 43e thereof.
And a skirt member 43 having a cone shape whose diameter increases toward. At one opening end 43a of the skirt member 43,
A wall surface 43b is formed that abuts on the chamber 8 when it is fixed to the chamber 8 by welding 44. In addition, the wall surface 43
A cone-shaped skirt portion 43d is formed at the lower end portion 43c of b and the other opening end 43e.

Next, the smoke screen generator 40 according to the present embodiment.
The action of will be explained. Smoke screen generator 1 according to the present embodiment
Is installed, for example, on the ceiling of a vault. And
For example, when the abnormality detection sensor detects an illegal intruder such as a robbery, an operation signal (ignition current) is sent to the smoke screen generator 1.

In the smoke screen generator 1, a constant current flows through the igniter 3, whereby the ignition charge is ignited, and the ignition charge 5 is burned by the flame and impact. The flame of the ignition charge 5 propagates from the ignition hole 4a of the ignition charge case 4 to the smoke generating agent 6, and the combustion gas smoke increases the internal pressure of the combustion chamber 10. Then, due to the internal pressure of the combustion chamber 10, the first smoke outlet 8a and the second smoke outlet 8b.
The nozzle closures 9a and 9b that close the nozzle reach the elastic limit and break.

Further, the gas smoke produced by the combustion of the smoke generating agent 6 is ejected from the first smoke outlet 8a and the second smoke outlet 8b. Then, the smoke ejected from the first smoke outlet 8a collides with the cone-shaped skirt portion 43d of the gas smoke flow path control member 41 and is ejected vigorously so as to be gathered in the vertical direction of the smoke screen generator 40. It

Further, since the gas smoke produced by the combustion of the smoke generating agent 6 passes through the first smoke outlet 8a and the second smoke outlet 8b at a speed exceeding the speed of sound, a sound is produced. This allows
Smoke screens that block sight are spread in the safe room. As described above, according to the smoke screen generating apparatus 40 of the present embodiment, the same operational effects as the smoke screen generating apparatus 1 can be obtained, and the unique operational effect obtained by providing the gas smoke flow path control member 41. Can be played.

That is, the gas smoke ejected from the first smoke outlet 8a is recollected in the vertical direction of the smoke screen generator 40 to form a gas smoke having a strong ejection force, and the diffusibility of the smoke screen (the visibility cutoff time). Shortening, uniform visibility interruption to the space such as vault) is improved. Further, since the force of ejection of gas smoke due to the shape of the space portion such as the vault where the smoke screen is generated is prevented from weakening, the influence of the shape of the space portion can be reduced. Further, the behavior of the smoke screen can be controlled by changing the angle of the skirt portion 43d of the gas smoke flow path control member 41.

In this embodiment, the case where the first smoke outlet 8a and the second smoke outlet 8b are provided has been described.
It is also possible to close one of the smoke outlets and provide the smoke outlet only on one side surface to discharge the gas smoke from one direction (corresponding to claim 3). 20 to 22 show a smoke screen generator 50 according to a fourth embodiment of the present invention (claim 9).
And correspond to claim 10).

The smoke screen generating apparatus 50 according to the present embodiment is different from the smoke screen generating apparatus 20 according to the second embodiment in that the gas smoke flow path control member 51 is provided on the flange portion 28c and the outer periphery of the ejection chamber 31 is surrounded. Is different. Gas smoke flow path control member 51
Is a tubular member 52 made of stainless steel and having a plate thickness of 1.5 mm, which is attached to the flange portion 28c located outside the ejection chamber 31 via a bolt 54, and an internal surface of the tubular member 52. The member 52 has a cone-shaped skirt member 53 whose diameter increases from one opening end 52a toward the other opening end 52b. At one end 52a of the opening of the skirt member 53, four screw holes 53a into which the bolts 54 are screwed are evenly provided on the circumference.

Next, the smoke screen generator 50 according to the present embodiment.
The action of will be described. The smoke screen generator 50 according to the present embodiment is installed, for example, on the ceiling of a vault. Then, for example, when the abnormality detection sensor detects an illegal intruder such as a robbery, an operation signal (ignition current) is sent to the smoke screen generator.

First, when a constant current flows through the igniter 22, the ignition charge 23b is ignited, and the ignition charge 25 is burned by the flame and impact. The flame of the ignition charge 25 propagates from the ignition hole 24a of the ignition charge case 24 to the smoke generating agent 26, and the combustion gas smoke increases the internal pressure of the combustion chamber 30. Then, the internal pressure of the combustion chamber causes the nozzle closure 29a blocking the smoke outlet 28a to reach the elastic limit and break.

Further, the gas smoke generated by the combustion of the smoke generating agent 26 passes through the smoke outlet 28a from the filter 29b and the nozzle closure 29a, and is discharged from the first chamber 31a blocked by the partition member 33 of the jet chamber 31 to the second chamber 31a. It flows into the chamber 31b, further passes through the hole 34a of the partition member 34, flows into the third chamber 31c, and smoke is ejected from the first smoke outlet 32a and the second smoke outlet 32b.

Then, the smoke ejected from the first smoke outlet 32a collides with the gas smoke flow path control member 51 and is vigorously ejected so as to be collected in the vertical direction of the smoke screen generator 50. Moreover, since the gas smoke generated by the combustion of the smoke generating agent 26 passes through the smoke outlet 28a at a speed exceeding the speed of sound,
With pronunciation. As a result, the smoke screen that blocks the field of view diffuses into the safe room.

Next, the smoke screen generator 5 according to the fourth embodiment.
For 0, we conducted an experiment related to the visibility blocking time.
The results are shown below. The visibility cutoff time in this experiment is the smoke concentration (visual field) in a space such as a safe room (room).
It refers to the time until there is no difference, which is the time required to completely block the view.

For example, the smoke screen generator 5 according to this embodiment.
There is no difference in visibility (difference in density) due to smoke regardless of the position of the installation room (space part) of 0. The smoke screen generating apparatus 50 according to the present embodiment has a width of about 5.3 m ×, as shown in FIG. 7, like the smoke screen generating apparatus 20 according to the second embodiment.
The room was about 2.1 m deep and about 2.3 m high (volume: about 26 m ³ ), and was installed about 30 cm from the ceiling in the center of the room.

Further, in order to measure the time of visibility interruption, the light measuring sensors are evenly provided at one side wall surface of the room (space part) and the other side wall surface intersecting the one side wall surface at four positions from the ceiling to the floor surface. Installed in. As shown in FIG. 29, this light measurement sensor is a pair of light sensors that emit and receive light from the amplifier unit 100. When smoke is generated, the amount of light transmitted, that is, the amount of light received, is changed depending on the amount of smoke. Take advantage of changing.

In other words, although a fixed amount of light is projected, if there is smoke between the optical sensors, the light is blocked and the amount of received light is reduced, so the amount of received light is digitally displayed on the screen. Then, the smoke screen generator 50 according to the present embodiment
After activating, the time-dependent change in the amount of light received in the room was measured, and the time when the amount of light received by the optical sensor 101 reached the same level was defined as the visibility blocking time.

(Experimental Example 7) In the apparatus of this Experimental Example 7, the diameter of the first smoke outlet 32a is 8 mm and the number is 20, and the number of the second smoke outlet 3 is 3.
The diameter of 2b was 6 mm and the number was 8. Next, the igniter was energized by remote control to operate the device. As a result, the burning of the smoke generating agent was completed in about 0.5 seconds, and the gas smoke was ejected from the first and second smoke outlets in 1 to 2 seconds after the combustion of the smoke generating agent.

Then, the gas fumes emitted from the gas outlets 32
It was diffused from a, 32b to the surroundings, and was diffused in the whole space in several tens of seconds. Immediately after operation, 0.5 seconds, 3 seconds, 6
The smoke generation situation after 0 seconds and 120 seconds is shown in FIG.
These are shown in (B), (C), (D), and (E), respectively. In addition, the visibility was reached to the same level about 5 minutes after the activation (vision blocking time).

(Experimental Example 8) The apparatus of this Experimental Example 8 is the same as that of the experimental example 7 except that the skirt member 53 has a reflection angle of 45 °.
The gas smoke flow path control member 51 set to 1 was attached. Next, the igniter was energized by remote control to operate the device. As a result, the burning of the smoke generating agent is completed in about 0.5 seconds,
The smoke was ejected from the first and second smoke outlets within 1 to 2 seconds after the smoke generating agent was burned.

Then, the ejected smoke is sent to each of the smoke outlets 32a,
It was diffused from 32b evenly to the surroundings, and was diffused in the whole space in several tens of seconds. Immediately after the operation, 0.5 seconds, 3 seconds, 60 seconds, and 120 seconds after, the smoke situation is shown in FIGS. 24 (A), (B),
They are shown in (C), (D) and (E), respectively. In addition, the field of view reached the same level about 2.5 minutes after the operation (field of view blocking time).

(Experimental Example 9) The apparatus of Experimental Example 9 (corresponding to the smoke screen generating apparatus 60 shown in FIG. 30) is the same as the smoke screen generating apparatus of Experimental Example 7 except that the first smoke outlet (diameter 8 mm × 20 pieces).
Only 32a was provided, and the gas smoke flow path control member 51 in which the reflection angle of the skirt member 53 was set to 45 ° was attached to this.

Next, the ignition tool was energized by remote control to operate the device. Due to this, the combustion of smoke generating agent is about 0.5.
It ended in seconds, and the gas smoke was ejected from the first smoke outlet 32a 1 to 2 seconds after the smoke generating agent was burned. Then, the ejected gas smoke was diffused evenly from the respective smoke outlets 32a to the surroundings, and was diffused into the entire space in several tens of seconds.

Immediately after the operation, 0.5 seconds, 3 seconds, 60 seconds and 120 seconds later, the smoke generation situation is shown in FIGS. 25 (A), (B),
They are shown in (C), (D) and (E), respectively. In addition, the visibility was reached to the same level approximately 2 minutes after the operation was completed (vision blocking time). (Experimental Example 10) The apparatus of Experimental Example 10 is the same as the smoke screen generating apparatus of Experimental Example 9 except that the reflection angle of the skirt member 53 is 32.
The gas smoke flow path control member 51 set at ° was attached.

Next, the ignition device was energized by remote control to operate the device. Due to this, the combustion of smoke generating agent is about 0.5.
It ended in seconds, and the gas smoke was ejected from the first smoke outlet 32a 1 to 2 seconds after the smoke generating agent was burned. Then, the ejected gas smoke was diffused evenly from the respective smoke outlets 32a to the surroundings, and was diffused into the entire space in several tens of seconds.

Immediately after the operation, 0.5 seconds, 3 seconds, 60 seconds, and 120 seconds after, the smoke generation situation is shown in FIGS. 26 (A), (B),
They are shown in (C), (D) and (E), respectively. In addition, the visibility was reached to the same level about 3 minutes after the activation (vision blocking time). (Experimental Example 11) The apparatus of this Experimental Example 11 is the same as the smoke screen generating apparatus of Experimental Example 9 except that the reflection angle of the skirt member 53 is 28.
The gas smoke flow path control member 51 set at ° was attached.

Next, the igniter was energized by remote control to operate the device. Due to this, the combustion of smoke generating agent is about 0.5.
It ended in seconds, and the gas smoke was ejected from the first smoke outlet 32a 1 to 2 seconds after the smoke generating agent was burned. Then, the ejected gas smoke was diffused evenly from the respective smoke outlets 32a to the surroundings, and was diffused into the entire space in several tens of seconds.

Immediately after the operation, 0.5 seconds, 3 seconds, 60 seconds, and 120 seconds later, the smoke generation situation is shown in FIGS. 27 (A), (B),
They are shown in (C), (D) and (E), respectively. In addition, the visibility was reached to the same level about 3 minutes after the activation (vision blocking time). (Experimental Example 12) The apparatus of Experimental Example 12 is the same as the smoke screen generating apparatus of Experimental Example 9 except that the reflection angle of the skirt member 53 is 23.
The gas smoke flow path control member 51 set at ° was attached.

Next, the ignition tool was energized by remote control to operate the device. Due to this, the combustion of smoke generating agent is about 0.5.
It ended in seconds, and the gas smoke was ejected from the first smoke outlet 32a 1 to 2 seconds after the smoke generating agent was burned. Then, the ejected gas smoke was diffused evenly from the respective smoke outlets 32a to the surroundings, and was diffused into the entire space in several tens of seconds.

Immediately after the operation, 0.5 seconds, 3 seconds, 60 seconds, and 120 seconds after, the smoke generation situation is shown in FIGS. 28 (A), (B),
They are shown in (C), (D) and (E), respectively. In addition, the visibility was reached to the same level about 3.5 minutes after the activation (vision blocking time). (Discussion) From Experimental Example 7 to Experimental Example 12, it is understood that the smoke curtain generating device to which the gas smoke flow path control member 51 is attached has a high improvement in the diffusion effect of the smoke curtain.

When the first smoke outlet 32a is fixed, the skirt member 53 of the gas smoke flow path control member 51 is fixed.
It was found that the behavior (diffusibility) of the smoke screen can be changed by the setting angle of. FIG. 30 shows a smoke screen generator 60 according to a fifth embodiment of the present invention (claims 9 and 1).
Corresponding to 0).

The smoke screen generator 60 according to the present embodiment differs from the smoke screen generator 20 according to the fourth embodiment in that the second smoke outlet 32b is omitted. According to the smoke screen generator 60 of the present embodiment, since the smoke outlet is the first smoke outlet 32a formed only on one side surface on the circumferential side surface (curved surface portion),
The gas smoke from the first smoke outlet 32a is the gas smoke flow path control member 5
1, the effect of improving the diffusivity is increased as a vigorous smoke screen, and a state in which there is no difference in the density (field of view) of gas smoke in a space such as a safe room is possible in a short time.

Further, the gas smoke flow path control member 51 collides with the gas smoke flow control member 51, and the gas smoke from the first smoke outlet 32a is swiftly ejected so as to be condensed. Can block the view of the safe room.

[0098]

As described above, according to the present invention, since the ignition device is arranged directly in the combustion chamber containing the smoke generating agent, the smoke is immediately emitted from the smoke outlet to the outside after the operation. You can spread the smoke screen. Further, by arranging the igniter directly in the combustion chamber containing the smoke generating agent and also disposing the smoke outlet, it becomes possible to make the size smaller than the conventional one while ensuring a predetermined amount of smoke generation.

Further, by providing a plurality of smoke outlets and a plurality of locations where the smoke outlets are installed at different angles, it is possible to diffuse the gas smoke over a wide range and enhance the visibility blocking effect. In addition, by forming the combustion chamber into a container that can withstand high pressure, it is possible to increase the internal pressure of the combustion chamber and accelerate the combustion of the smoke generating agent, thereby increasing the amount of smoke generated per unit time in a short time. It is possible to finish ejecting the required gas smoke from the container.

Further, by maintaining the pressure of the gas smoke burned by the smoke generating agent in the combustion chamber for a predetermined time, the gas smoke is ejected out of the apparatus at a speed exceeding the speed of sound, so that a sound can be produced. Further, since the gas smoke flow path control member is provided, the gas smoke ejected from the smoke outlet is re-collected in the vertical direction of the smoke curtain generating device to form gas smoke having a strong ejection force, and the diffusibility of the smoke curtain ( Shortening of the visibility blocking time, uniform visibility blocking to spaces such as vaults) is improved.

Further, since the gas smoke flow path control member is provided, it is possible to prevent the spouting of the gas smoke from being weakened by the shape of the space part such as the vault where the smoke screen is generated. It becomes possible to reduce. Further, the behavior of the smoke screen can be controlled by changing the angle of the gas smoke flow path control member.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a smoke screen generator according to a first embodiment of the present invention.

FIG. 2 is a side view showing the smoke screen generator of FIG.

3 is a bottom view showing the smoke screen generator of FIG. 1. FIG.

FIG. 4 is a sectional view of a smoke screen generator according to a second embodiment of the present invention.

5 is a side view showing the smoke screen generator of FIG. 4. FIG.

6 is a bottom view showing the smoke screen generator of FIG. 4. FIG.

FIG. 7 is a general view of Experimental Example 1.

FIG. 8 is a relationship diagram between combustion chamber pressure and combustion time in Experimental Example 1.

9 is a smoke emission situation of Experimental Example 1. FIG.

10 is a flow chart of gas smoke of Experimental Example 1. FIG.

FIG. 11 is a smoke emission situation of Experimental Example 2.

FIG. 12 is a flow chart of gas smoke in Experimental Example 2

FIG. 13 is a smoke emission situation of Experimental Example 3

FIG. 14 is a flow chart of gas smoke of Experimental Example 3

FIG. 15 is a smoke situation of Experimental Example 4

16 is a smoke generation situation of Experimental Example 5. FIG.

FIG. 17 is a flow chart of gas smoke of Experimental Example 5.

FIG. 18 is a relationship diagram between the combustion chamber pressure (nozzle opening area) and the sound pressure level in Experimental Example 6;

FIG. 19 is a sectional view of a smoke screen generator according to a third embodiment of the present invention.

FIG. 20 is a sectional view of a smoke screen generator according to a fourth embodiment of the present invention.

FIG. 21 is a bottom view showing the smoke screen generator of FIG. 20.

22 is a side view showing the smoke screen generator of FIG. 20. FIG.

FIG. 23 is a smoke emission situation of Experimental Example 7.

FIG. 24 is a smoke emission situation of Experimental Example 8.

FIG. 25 is a smoke emission situation of Experimental Example 9.

FIG. 26 is a smoke emission situation of Experimental Example 10.

FIG. 27 is a smoke emission situation of Experimental Example 11.

FIG. 28 is a smoke emission situation of Experimental Example 12.

FIG. 29 is a principle diagram of an optical sensor measuring instrument that measures a visual field interruption time.

FIG. 30 is a bottom view of the smoke screen generator according to the fifth embodiment of the present invention.

[Explanation of symbols]

1, 20, 40, 50, 60 Smoke screen generator 2.22 Ignition device 3,23 Ignition tool 4, 24 Ignition powder case 5,25 ignition powder 6,26 smoke agent 7,27 cap 8, 28 chambers 9a, 9b, 29a Nozzle closure 10, 30 combustion chamber 31 Spout chamber 33 Partition member 34 partition members 31a First room 31b Second room 31c Third room 32a First vent 32b Second smoke outlet 41, 51 Gas smoke flow path control member 42, 52 tubular member 43, 53 Skirt member

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshikazu Kanazawa             Fukushima Prefecture Nishishirakawa-gun Saigo Village             1 Within Nippon Koki Co., Ltd. (72) Inventor Yoshihiro Suzuki             Fukushima Prefecture Nishishirakawa-gun Saigo Village             1 Within Nippon Koki Co., Ltd. (72) Inventor Makoto Kawano             Fukushima Prefecture Nishishirakawa-gun Saigo Village             1 Within Nippon Koki Co., Ltd. F term (reference) 5C084 AA02 AA06 AA07 AA13 BB02                       BB24 HH17

Claims (17)

[Claims] 1. An ignition device, a smoke generating agent that burns and smokes by the ignition device, and a combustion chamber that accommodates the smoke generating agent by providing a smoke outlet for ejecting gas smoke generated by combustion of the smoke generating agent to the outside. A smoke curtain generating device, wherein a pressure holding member that holds the pressure of the gas smoke is provided at the smoke outlet. 2. The smoke screen generator according to claim 1, wherein
The smoke screen generating device, wherein the smoke outlet is provided on one side surface of the combustion chamber and another side surface different from the one side surface. 3. The smoke screen generator according to claim 1, wherein
The smoke screen generating device, wherein the smoke outlet is provided on one side surface of the combustion chamber. 4. The smoke screen generating apparatus according to claim 1, further comprising: a gas smoke surrounding the outer periphery of the combustion chamber and changing a flow path of the gas smoke ejected from the smoke outlet. A smoke screen generating apparatus, further comprising a flow path control member. 5. The smoke screen generator according to claim 4,
The gas smoke flow path control member includes a tubular member attached to the combustion chamber, and a cone-shaped skirt member whose diameter increases toward the opening end side of the tubular member. . 6. An ignition device, a smoke generating agent that burns and smokes by the ignition device, a combustion chamber for accommodating the smoke generating agent, which is provided with a smoke outlet for discharging gas smoke generated by combustion of the smoke generating agent, and the combustion chamber And an ejection chamber having an ejection port for ejecting the gas smoke to the outside, and a pressure holding member for holding the pressure of the gas smoke is provided in the ejection port provided in the combustion chamber. A smoke screen generator characterized in that 7. The smoke screen generator according to claim 6,
The smoke screen generating device, wherein the smoke outlet provided in the ejection chamber is provided on one side surface of the ejection chamber and on another side surface different from the one side surface. 8. The smoke screen generator according to claim 6,
The smoke screen generating device, wherein the smoke outlet provided in the ejection chamber is provided on one side surface of the combustion chamber. 9. The smoke screen generating apparatus according to claim 6, further comprising a gas smoke surrounding the outer circumference of the ejection chamber and changing a flow path of the gas smoke ejected from the fumes outlet. A smoke screen generating apparatus, further comprising a flow path control member. 10. The smoke screen generating apparatus according to claim 9, wherein the gas smoke flow path control member is a cylindrical member attached to the ejection chamber, and a cone whose diameter is expanded toward an opening end side of the cylindrical member. Having a skirt member in the shape of a smoke. 11. The smoke screen generator according to claim 2, 3, 4, 7, 7, or 9, wherein the smoke outlet is on one side surface or another side. A smoke screen generator having an ejection angle of 45 ° to 135 ° with respect to a side surface. 12. The smoke screen generator according to claim 2, claim 4, claim 7, claim 9, or claim 10, wherein the smoke outlet has a total opening area on one side surface and others. A smoke screen generating device, wherein the total opening area on the side surface has the same or different total opening area. 13. The method according to any one of claims 1 to 12.
The smoke screen generating apparatus according to the item 1, wherein the number of the combustion chambers is one. 14. Any one of claims 1 to 13
In the smoke screen generator according to the item, the pressure holding means is
A smoke screen generator, which is a nozzle or a nozzle closure. 15. The method according to any one of claims 1 to 14.
In the smoke screen generator according to the item 1, the smoke generating agent is 5 to 6
A smoke screen generating device, wherein a combustion speed under a pressure of MPa is 6000 mm / sec. 16. The method according to any one of claims 1 to 15.
2. The smoke screen generating apparatus according to claim 1, wherein the fuming agent produces a sound when gas smoke is ejected from the smoke outlet. 17. The smoke screen generating apparatus according to claim 16, wherein the sound output is 100 to 140 dB.