JPH07265452A - Fire extinguisher head - Google Patents

Abstract

PURPOSE:To provide a bubble head for fire extinguishing capable of obtaining uniform radiation distribution by reducing an error in assembling and reducing the number of parts. CONSTITUTION:A plate shape projection 21c is formed integrally on the lower face of a head main body 21 to regulate the radiating direction of a extinguishing liquid on a horizontal plane in a direction of nearly 180 deg. so as to protrude downward along with an internal plane on which a passage 21b is formed. A deflector 22 is mounted on a screw hole formed on the lower end face of the projection 21c with a screw 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a fire-extinguishing foam head that emits fire-extinguishing foam in a direction of 0 °, and particularly to a fire-extinguishing foam head suitable for an indoor parking lot or the like.

[0002]

2. Description of the Related Art A general fire-extinguishing foam head is designed to radiate fire-extinguishing foam in all directions of 360 ° in a horizontal plane.
Those that radiate in the direction of 0 ° are known. 10 and 11 show a conventional fire-extinguishing foam head disclosed in, for example, Japanese Utility Model Laid-Open No. 4-83264, and a side surface of the lower part of the head body 1 for radiating fire-extinguishing foam in a direction of about 180 °. An L-shaped partition plate 13 is attached by a screw 14.

A deflector mounting plate 15 is formed integrally with a hanging plate portion 13a extending below the partition plate 13, and a semicircular deflector 16 has a semiconical nut 17 and a screw 1.
It is attached to the deflector attachment plate 15 by 8. The deflector 16 is formed with an opening pattern 16a as shown in FIG. 11 in order to make bubbles uniform in the radiation area.

In such a structure, the extinguishing liquid passing through the liquid passage 2A from the upper side to the lower side is agitated by the guide 12 to become a rotating flow and is discharged from the nozzle hole 3a. The hanging plate portion 13a collides with the deflector 16 to restrict the radiation direction to the right side in the drawing, and the net 6 radiates bubbles in a semicircular shape. In addition, the gap 19 between the hanging plate portion 13 a and the deflector 16
The discharge of the fire extinguishing liquid from the head causes the foam to be emitted right below the head.

[0005]

However, in the above-described conventional fire-extinguishing foam head, the center of the semi-circular deflector 16 is a semi-conical nut 17 and a screw 18 in order to make the radiation range of the foam semi-circular. Since the L-shaped partition plate 13 having the hanging plate portion 13a is attached to the head main body 1 by the screw 14, the deflector 16 and the hanging member 13 are attached due to an error in assembling with the screws 18, 14. There is a problem that a uniform radiation distribution cannot be obtained when the mounting position of the plate portion 13a is deviated. In particular, when the deflector 16 rotates from the normal position around the screw 18 at the time of assembly as shown in FIG. 11B, the distance between the hanging plate portion 13a and the deflector 16 is not constant and the deflector is not constant. If the direction of 16 is deviated, the initial performance of the foam head cannot be obtained.

Even when assembled in a normal assembly position, a uniform radiation distribution can be obtained when the deflector 16 and the hanging plate portion 13a are displaced due to water pressure during actual foam radiation in the event of a fire. Fire extinguishing is not reliable. Further, in the above-described conventional fire-extinguishing foam head, since the radial direction is made semicircular by attaching the L-shaped partition plate 13 having the hanging plate portion 13a to the head body 1, there is a problem that the number of parts is large. .

In view of the above-mentioned conventional problems, the present invention can reduce an error in assembling to obtain a uniform radiation distribution, and can reduce the number of parts for a fire-extinguishing foam head. The purpose is to provide.

[0008]

In order to achieve this object, the present invention provides a convex portion from the head body for restricting the radial direction of the fire extinguishing liquid supplied from the fire extinguishing liquid supply pipe to approximately 180 ° on the horizontal plane. It is characterized in that it is integrally formed so as to project downward, and a deflector is screwed to the lower end surface of the convex portion.

Further, according to the present invention, the convex portion for restricting the radial direction of the fire extinguishing liquid supplied from the fire extinguishing liquid supply pipe to about 180 ° is integrally formed so as to project downward from the head body. It is characterized in that a deflector is integrally formed at the tip of the convex portion. The present invention is further characterized in that the outer shape of the head body is formed so as to represent the radiation direction of the fire extinguishing liquid.

According to the present invention, a part of the side wall of the substantially cylindrical head body is formed in a plate shape, and the inner surface of the part of the side wall directs the radiation direction of the fire extinguishing liquid supplied from the fire extinguishing liquid supply pipe in the horizontal plane. The radiating direction of the fire extinguishing liquid is expressed by the outer surface of a part of the side wall, and the deflector is integrally formed so as to horizontally project from the inner surface of a part of the side wall.

[0011]

In the present invention, the convex portion for restricting the radial direction of the fire extinguishing liquid supplied from the fire extinguishing liquid supply pipe to approximately 180 ° is formed integrally with the head main body, and the deflector is formed on the lower end surface of the convex portion. Since it is screwed, the number of screwed points can be reduced and the error during assembly can be reduced.
Therefore, a uniform radiation distribution can be obtained. Also, the number of parts can be reduced.

Further, according to the present invention, a convex portion for restricting the radial direction of the fire extinguishing liquid supplied from the fire extinguishing liquid supply pipe to approximately 180 ° is formed integrally with the head body, and the deflector is further provided at the tip of the convex portion. Since it is integrally formed,
Since there are no screw fastening points, a uniform radiation distribution can be obtained. Moreover, the number of parts can be further reduced.

Further, according to the present invention, since the external shape of the head body is formed so as to represent the radiation direction of the fire extinguishing liquid, it is possible to prevent the operator from making a mistake in the mounting direction due to the external appearance when installing the head. Therefore, the fire can be surely extinguished. Further, according to the present invention, a part of the side wall of the substantially cylindrical head body is formed in a plate shape, and the deflector is formed integrally with the inner surface of the plate side wall, so that an error during assembly is reduced. To obtain a uniform radiation distribution, reduce the number of parts, and prevent the operator from making a mistake in the mounting direction due to the appearance of the plate-shaped side wall when installing the head. You can

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of a fire-extinguishing foam head according to the present invention. This head is a head body 21,
The deflector 22 for emitting the fire extinguishing liquid, the net 23 for emitting the fire extinguishing liquid emitted by the deflector 22 as bubbles, and the two screws 24 for attaching the deflector 22 to the head body 21 It is composed of parts.

The head main body 21 is formed in a cylindrical shape having a stepped appearance, and a screw portion 21a for connecting the main body 21 and the pipe is screwed on the outside of the upper portion of the head main body 21 at the tip of a fire extinguishing liquid supply pipe not shown. Are formed. In addition, a flow path 21b is vertically formed inside the head body 21 so that the fire extinguishing liquid supplied from the fire extinguishing liquid supply pipe flows downward.

A plate-shaped convex portion 21c is integrally formed on the lower surface of the head main body 21 so as to project downward along the inner surface forming the flow path 21b. In the state shown in FIG. 21c so that it is not radiated in the right direction,
That is, it is configured to be radiated only in the left direction. A screw hole (not shown) for screwing the screw 24 is formed on the lower end surface of the convex portion 21c. Further, a circular groove 21d for fitting the outer peripheral end of the net 23 is formed on the lower surface of the head body 21.

The deflector 22 is formed in a substantially semi-circular shape as shown in FIG. 2, and has an opening pattern 22a for uniformly emitting the fire extinguishing liquid. This deflector 2
2 is attached by two screws 24 to the screw hole formed in the lower end surface of the convex portion 21c so that the fire extinguishing liquid comes into contact with the pattern 22a, that is, on the left side of the convex portion 21c in the figure.

The net 23 has a circular horizontal surface and is formed in a cage shape so as to cover the convex portion 21c protruding from the lower surface of the head main body 21, the deflector 22 and the like. The net 23 is attached to the head body 21 by fitting the outer peripheral end thereof into the groove 21d of the head body 21.
In such a configuration, the fire extinguishing liquid pressurized and supplied from the fire extinguishing liquid supply pipe flows downward through the flow passage 21b of the head body 21, and the fire extinguishing liquid passing through the flow passage 21b is radiated by the convex portion 21c. The direction is restricted to about 180 °. Then, the fire extinguishing liquid that has passed through the flow path 21b directly hits the deflector 22, and the fire extinguishing liquid that has bounced off by the convex portion 21c hits the deflector 22, and the pressure of the fire extinguishing liquid that is pressurized and spreads in the horizontal direction passes through the flow path 21b. , The fire extinguishing liquid that directly hits the deflector 22 or bounces off by the convex portion 21c is radiated in the direction of approximately 180 ° by the force of being scattered by the pattern 22a, and is also foamed by the net 23 in the direction of approximately 180 °. Is emitted.

Therefore, according to the above-mentioned embodiment, the convex portion 21c for restricting the radial direction to approximately 180 ° is provided in the head main body 21.
Since the deflector 22 is attached to the convex portion 21c by the two screws 24, it is possible to reduce the error during assembly and to obtain the performance of achieving the initial purpose. The distribution can be obtained, and the number of parts can be reduced.

Next, a second embodiment will be described with reference to FIGS. In this embodiment, a plate-shaped convex portion 21c is formed on the lower surface of the head body 210 so as to protrude downward along the inner surface forming the flow path 21b.
The tip of c is formed to extend horizontally in the radial direction, and a substantially semicircular deflector portion 21d is formed in the extended portion. Since the other structure is the same as that of the embodiment shown in FIGS. 1 and 2, detailed description thereof will be omitted.

Therefore, in this embodiment, the convex portion 21c and the deflector portion 21d which restrict the radial direction to approximately 180 ° are provided.
Since both are integrally formed on the head body 210,
There are no screw fixing points and there are no errors during assembly. Also,
Since this head is composed of two parts, the head body 210 and the net 23, the number of parts can be further reduced.

Next, a third embodiment will be described with reference to FIGS. Here, the head of the present invention is capable of generating bubbles of about
Despite radiating in the direction of °, the appearance after assembly in the above embodiment is substantially cylindrical and does not represent the radiating direction. Therefore, if the operator makes a mistake in the mounting direction when installing the head at the fire extinguishing position, the radiation will be emitted in an unintended direction when extinguishing the fire.

The third embodiment shows a modification of the embodiment shown in FIGS. 1 and 2, in which the head body 211 has an outer surface 2 on the side wall 211a of the head body 211 on the side where bubbles are not emitted.
11b is formed of a flat surface, and the external appearance is configured to indicate the radial direction. Similarly, the net 23a is also formed in a substantially semicircular shape so that it can be fitted into the head main body 211 and the appearance thereof shows the direction. Therefore, when the head is installed in the fire extinguishing position, the operator does not need to use the outer surface 211 of this plane.
By looking at b and the net 23a, it is possible to prevent the mounting direction from being erroneous, and it is possible to surely extinguish the fire.

The other structure is substantially the same as that of the embodiment shown in FIGS. 1 and 2, but the lower surface of the head main body 211 is formed long downward so that the net 23a having a substantially semicircular shape can be fitted therein. There is. In addition, the convex portion 21c that limits the radiation range to a semicircle
Is integrally formed on a long side wall of the head body 211, and the deflector 22 is attached to the convex portion 21c by two screws 24.

Next, a fourth embodiment will be described with reference to FIGS. 7 and 8. The fourth embodiment shows an example in which the second and third embodiments are combined. First, similarly to the third embodiment, the head body 212 has a side wall 212a of the head body 212 on the side where bubbles are not emitted. The outer side surface 212b is formed as a plane and is configured to indicate a direction. Similarly, the net 23a is also formed in a substantially semicircular shape so that it can be fitted into the head main body 212 and the appearance thereof shows the direction.

The lower surface of the head main body 212 is formed long downward so that the net 23a having a substantially semicircular shape can be fitted therein, and the deflector portion 21d is formed on the head main body 212 as in the second embodiment. On the other hand, it is integrally formed. In this embodiment, instead of the convex portion 21c, the deflector is integrally formed so as to horizontally project from the inner surface 212c opposite to the outer surface 212b. Therefore, as in the second embodiment, there is no error during assembly, and the number of parts can be further reduced. It is possible to prevent the mounting direction from being mistaken due to the appearance of the side surface 212b.

By the way, the radiation direction is set to 1 by the above head.
Although described as 80 °, it is preferable that the radiation area is radiated in a rectangular area as shown in FIG. 9 in order to realize effective extinguishing. Therefore, by devising the opening shape and the like of the pattern 22a formed on the deflector 22 and the deflector portion 21d, a rectangular radiation area as shown in FIG. 9 can be realized.

[0028]

As described above, according to the present invention, the convex portion for restricting the radial direction of the fire extinguishing liquid supplied from the fire extinguishing liquid supply pipe to approximately 180 ° on the horizontal plane is integrally formed so as to protrude downward from the head main body. Since the deflector is fixed to the lower end surface of the convex portion with screws, the number of screw fixing points can be reduced and the error during assembly can be reduced.
A uniform radiation distribution can be obtained, and the number of parts can be reduced.

Further, according to the present invention, a convex portion for restricting the radial direction of the fire extinguishing liquid supplied from the fire extinguishing liquid supply pipe to approximately 180 ° on the horizontal plane is integrally formed so as to protrude from the head main body, and the convex portion is formed. Since the deflector is integrally formed at the tip of the device, there are no screw fixing points, so that a uniform radiation distribution can be obtained and the number of parts can be further reduced.

Further, according to the present invention, since the outer shape of the head main body is formed so as to represent the radiation direction of the fire extinguishing liquid, it is possible to prevent the operator from making a mistake in the mounting direction depending on the external appearance when installing the head. Therefore, the fire can be surely extinguished. Further, according to the present invention, a part of the side wall of the substantially cylindrical head body is formed in a plate shape, and the inner surface of the part of the side wall causes the fire extinguishing liquid supplied from the fire extinguishing liquid supply pipe to radiate approximately 180 ° in a horizontal plane. In addition, the outer surface of part of the side wall indicates the radiation direction of the fire extinguishing liquid, and the deflector is integrally formed so as to project horizontally from the inner surface of part of the side wall, reducing errors during assembly. It is possible to obtain a uniform radiation distribution, reduce the number of parts, and prevent an operator from making a mistake in the mounting direction due to the appearance of the plate-shaped side wall when installing the head. .

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view showing an embodiment of a fire-extinguishing foam head according to the present invention.

2 is a partial cutaway bottom view showing the fire-extinguishing foam head of FIG. 1. FIG.

FIG. 3 is a partial sectional side view showing a fire-extinguishing foam head according to a second embodiment.

4 is a partial cutaway bottom view of the fire-extinguishing foam head of FIG.

FIG. 5 is a partial sectional side view showing a fire-extinguishing foam head according to a third embodiment.

6 is a partially cutaway bottom view showing the fire-extinguishing foam head of FIG. 5;

FIG. 7 is a partial cross-sectional side view showing a fire-extinguishing foam head according to a fourth embodiment.

8 is a partial cutaway bottom view of the fire-extinguishing foam head of FIG. 7. FIG.

FIG. 9 is an explanatory diagram showing a radiation range.

FIG. 10 is a partial sectional side view showing a conventional fire-extinguishing foam head.

11 is an explanatory view showing an assembled state of the head of FIG.

[Explanation of symbols]

 21, 210, 211, 212: Head body 21a: Screw portion 21b: Flow path 21c: Convex portion 21d, 22: Deflector 22a: Opening pattern 23, 23a: Net 24: Screws 211a, 212a: Side wall 211b, 212b: Outside surface 212c: Inside surface

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuji Matsumoto 2-1043 Kamiosaki, Shinagawa-ku, Tokyo Hochiki Co., Ltd.

Claims (4)

[Claims] 1. A convex portion for restricting a radial direction of a fire extinguishing liquid supplied from a fire extinguishing liquid supply pipe to approximately 180 ° in a horizontal plane is integrally formed so as to project downward from a head main body, and the convex portion A foam head for fire extinguishing, characterized in that a deflector is screwed to the lower end surface. 2. A convex part for restricting the radial direction of the fire extinguishing liquid supplied from the fire extinguishing liquid supply pipe to approximately 180 ° on the horizontal plane is integrally formed so as to project downward from the head main body, and the convex part A fire-extinguishing foam head, characterized in that a deflector is integrally formed at the tip. 3. The fire-extinguishing foam head according to claim 1 or 2, wherein the outer shape of the head body is formed so as to represent the radiation direction of the fire-extinguishing liquid. 4. A head part having a substantially cylindrical shape has a part of a side wall formed in a plate shape, and an inner surface of a part of the side wall has a radial direction of a fire extinguishing liquid supplied from a fire extinguishing liquid supply pipe in a horizontal plane of about 180. The fire extinguisher is characterized in that it is regulated to 0 ° and the outer surface of a part of the side wall represents the radiation direction of the fire extinguishing liquid, and the deflector is integrally formed so as to horizontally project from the inner surface of a part of the side wall. Foam head.