JP2001340487A - Side wall type sprinkler head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side wall type sprinkler head capable of scattering water evenly farther in the horizontal direction than an existing side wall type sprinkler head. SOLUTION: The top of a board-like deflector is mounted so as to be slanted slanting in the water guiding direction A. A part or the whole of the top of the deflector may be bent in the water guiding direction A, or a support guide hole of the deflector may be bored slantingly toward the top of the deflector against the vertical line of the deflector surface to suspend the deflector from a support, or the deflector may be suspended from a curved support. The deflector and a water guiding hole are slanted at 1-30 deg..

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side wall type sprinkler head for fire extinguishing.

[0002]

2. Description of the Related Art A closed side wall type sprinkler head is a facility in which a sprinkler head can be mounted without requiring complicated piping facilities in an area where piping of a sprinkler facility is difficult, and compared to a conventional sprinkler head piping facility. This has the advantage that the equipment can be simplified.

[0003] A sprinkler head extinguishes a fire by spraying water when a fire occurs. Generally, the sprinkler head is mounted vertically on the ceiling surface, and water is sprinkled from above toward the fire. However, it is effective to install a sprinkler head on a wall surface or a wall of a room when a lighting fixture or the like is hung from a ceiling to cause watering obstruction or when the exposed piping is not preferable in terms of interior design. The sprinkler head attached to the wall or near the wall is called a side wall type sprinkler head.In the event of a fire, water can be sprinkled toward the center of the room without spraying water toward the ceiling, which does not become a fire source. I have.

[0004] As the side wall type sprinkler head, one that is vertically mounted on a ceiling surface or a wall near a room wall (vertical mounting side wall type sprinkler head) and one that is horizontally mounted on a wall or a wall near a room (horizontal mounting side wall) Type sprinkler head).

In the case where a ceiling plate is not stretched on the ceiling of the room or the space between the ceiling and the floor on the floor is too narrow to install a fire extinguishing pipe, a downward-type vertical mounting is required. Side wall sprinkler heads cannot be mounted on the ceiling. This is because the downward-facing vertical mounting side wall type sprinkler head can be mounted by screwing into a pipe in the ceiling.

[0006] Also, in the case of mounting this vertical mounting side wall type sprinkler head on the wall slightly away from the wall, the pipe projecting horizontally from the wall must be raised by a joint such as an elbow. For
Installation work requires extra time and labor. Therefore, a horizontal mounting side wall type sprinkler head mounted on a wall surface or near a wall is suitable.

As such a sprinkler head, Japanese Patent Application Laid-Open No. H11-164907 has been proposed. The sprinkler head proposed in JP-A-11-164907 is a side wall type sprinkler head having a flat auxiliary deflector installed above a plate-like deflector and capable of uniformly spraying water in a predetermined watering area as shown in FIG. is there.

[0008]

However, in recent years, due to a change in demand such as an increase in the floor plan of a hotel, a wide-area side wall type sprinkler head having a larger sprinkling area than in the past has come to be desired. The background that the wide-area side wall type sprinkler head has become desired in hotels and the like is described below.

[0009] In hotels, a side wall type sprinkler head is laid through piping inside the ceiling of a unit bath adjacent to a guest room, and a sprinkler head is mounted horizontally on the side wall surface of the guest room, thereby enabling a straight ceiling finish. By shortening the distance from the piping to the sprinkler head and installing the side wall type sprinkler equipment in addition to the conventional ceiling hanging sprinkler head equipment, it is possible to achieve a significant cost reduction compared to the sprinkler head equipment. .

However, if the cabin layout protected by the installation of the side wall type sprinkler head is wider than the water sprinkling area of the side wall type sprinkler head, it is difficult to secure a desired water sprinkling area with the current side wall type sprinkler head. Must be fitted with a sprinkler head, for which additional piping must be added.

In this case, when the floor plan of the cabin is wide in the lateral direction with respect to the sprinkler head sprinkling area, since the side wall type sprinkler heads are arranged in a line, complicated piping is not required, and the facility by adding the sprinkler heads is provided. The cost increase can be minimized.

However, when the floor plan is wide in the horizontal and distant directions, the following new problem occurs.

In the case where the sprinkler heads are arranged to face each other, a new piping line must be added, and the installation cost increases.

[0014] In some cases, it is difficult to install the side wall type sprinkler head from the side of the facing wall.
In this case, the protection area is protected by mounting the sprinkler head on the ceiling, but the ceiling is not finished with a straight ceiling, or the cost is increased due to the necessity of securing falling pipes and the like.

Therefore, in order to reduce the installation cost of the sprinkler head at the installation site of the sprinkler head having a wider layout than the conventional one, as described above,
Although it is desirable to increase the protection area of the sprinkler head, as described above, it is considered that it is desirable to increase the sprinkler area farther than the conventional one.

The inventor of the present invention, for example,
(A) A side wall type sprinkler head having a watering area including at least an enlarged far water sprinkling B as compared with the water sprinkling area of a conventional side wall type sprinkler head as shown in (a) is provided. Provides a wide-area side wall sprinkler head that can be applied to the site where a sprinkler head with a larger protection area than before is available, with the advantages that simplification of piping at the time of installation is possible and that the ceiling can be finished with a straight ceiling. The purpose is to do.

[Means for solving the problem]

The reasons why the conventional side wall type sprinkler head cannot spray water to the enlarged far water spray area B as shown in FIG.

In a conventional side wall type sprinkler head,
Water is applied vertically to the deflector from the water inlet, and the flow of water is changed in the vertical direction. The flow of water is changed again in the horizontal direction by the auxiliary deflector, and the water is blown in the horizontal direction.

However, this method is suitable for uniformly spraying water directly under or near the sprinkler head because the deflector collides with water vertically, but the flow rate to the auxiliary deflector from above the deflector is not sufficient. The flight distance of the water from the sprinkler head is not sufficient, and it is difficult to sufficiently water the far water spray area.

The inventor of the present invention has completed the present invention, focusing on the fact that in order to extend the flight distance and flow rate of the water in the horizontal direction, it is only necessary that the upper part of the deflector be inclined in the water conveyance direction.

Since the upper portion of the deflector is inclined in the direction of water conveyance, the flow rate of the gas jetted above the deflector can be increased. Thereby, watering area D and,
It is possible to increase the amount of water to the far water spray area B.

Further, by smoothly colliding the deflector with the water, the decrease in the flow velocity can be minimized, the flight distance of the water in the horizontal direction can be extended, and the sprinkling area by the auxiliary deflector can be farther than the conventional one. Can be moved in any direction. As a result, it is possible to increase the amount of watering to the enlarged remote watering area B.

By the way, here, as an example, the sprinkling area A having the far sprinkling area enlarged as compared with the conventional one as shown in FIG. 4 (a) is shown. It is obvious that it is effective to use these solutions even in the case of enlargement, and therefore the description in this case will be omitted.

[0024]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 3 is a side sectional view of the side wall type sprinkler head according to the embodiment of the present invention when water is introduced. FIG. 4 is a perspective view of a deflector and a support of the embodiment of the side wall type sprinkler head of the present invention. Here, A indicates the direction of water conveyance.

As shown in FIGS. 3 (a) and 4 (a), the relationship between the deflector and the support is maintained in the conventional manner in order to incline the upper part of the deflector in the water conveyance direction A. The deflector 4 a bent to A may be suspended from the support 16.

As shown in FIGS. 3 (b) and 4 (b), the deflector 4b is formed by inclining the column mounting hole 17b in a direction perpendicular to the plane of the deflector so as to incline the deflector in the water guide direction A. , May be suspended from the support 16 of the sprinkler head.

As shown in FIGS. 3 (c) and 4 (c), in order to incline the deflector in the water guide direction A, the column 16b is bent or curved downward with respect to the water guide direction A.
May be installed on the sprinkler head, and the deflector 4 may be suspended from the support 16b.

In the sprinkler head according to the present invention, the inclination angle α of the deflector is set to be larger than 1 ° with respect to the valve seat surface in order to blow water farther. However, if the inclination angle is larger than 30 °, the amount of water sprayed to the watering area C decreases, and a desired watering density cannot be obtained.

Further, in the sprinkler head of the present invention, an auxiliary deflector inclined upward may be provided. By combining the auxiliary deflector that is inclined upward and the deflector that is inclined in the water-guiding direction A with respect to the valve seat surface, the amount of water sprayed to the far water spray area B can be further increased.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A side wall type sprinkler head according to the present invention will be described below with reference to the drawings. FIG. 1 is a side cross-sectional view when the sprinkler head of the present invention is mounted on a wall, FIG. 2 is an enlarged perspective view of a deflector 4a, and FIG. 3 (a) is a side cross-sectional view of the side wall sprinkler head of the present invention after operation. FIG. 4 is a schematic view of a sprinkling area of the present invention and a conventional side wall type sprinkler head.

As shown in FIG. 1, the sprinkler head of the present invention comprises a main body 1, a frame 2, a valve body 3, a deflector 4, an auxiliary deflector 5, a thermosensitive decomposition part 6, and the like.

The main body 1 is provided with a water introduction port 7 at the center and a valve seat surface 8 at an end. Further, a male screw 9 is screwed around the outer periphery of the main body 1, and an end is a flange 10.

The frame 2 has a cylindrical shape, one end of which is an inner flange 11, and the other end of which is screwed to the flange 10 of the main body 1.

The valve body 3 is disk-shaped and has a packing attached on one side to keep the valve seat surface 8 of the main body 1 hermetically closed during normal times.

The deflector 4 has a circular plate shape as shown in FIG. Further, a plurality of slits 13 are formed laterally on both sides of the deflector 4, and the blades 14 are formed by the slits. The blade 14 is formed at a target position with respect to the vertical center line.

The deflector is defined as an upper horizontal line XX, which is a horizontal line slightly offset from a horizontal line of the deflector connecting the support guide holes, and the upper horizontal line XX.
The upper part is bent at approximately 4 ° in the water conveyance direction A along the upper horizontal line XX.

The offset distance between the upper horizontal line XX and the horizontal line of the deflector is larger than the radius of the support hole 17 and smaller than the radius of the water introduction port 7.

The deflector 4 is suspended from two columns 16, 16 fixed to a ring 15.

An auxiliary deflector 5 is provided above the deflector 4 at a distance. The auxiliary deflector 5 is a rectangular plate, and the auxiliary deflector has a rising portion fixed to the flange 11 of the frame 2, and at least the water guide direction side of the deflector 4 is inclined upward with respect to the water guide direction A from the fixed position. You are going to.

By inclining the auxiliary deflector upward, the flight distance at the time of watering can be further increased.

Here, the inclination angle of the auxiliary deflector is set to 0.
° to 30 °, preferably 4 °.

The thermo-decomposition part 6 is arranged at a part protruding from the frame 2 and holds the valve body 3 via a guide post 17. Since the thermosensitive decomposition part 6 is also known (Japanese Patent Publication No. 58-36986), a detailed description thereof will be omitted here.

As shown in FIG. 1, the sprinkler head is provided with a hole 19 in a wall 18 of a room, and is mounted sideways on a pipe 20 in the wall 18 through the hole 19. The hole 19 in the wall 18 is slightly larger than the sprinkler head.
The hole 19 is covered with a sealing plate 21 in order to prevent wind from coming in and out of the hole.

Next, the operation of the sprinkler head to which the present invention is applied when a fire occurs will be described.

When a fire occurs, as shown in FIG. 3 (a), the thermal decomposition part 6 is decomposed at an abnormally high temperature of the fire, and all the parts constituting the thermal decomposition part are placed sideways (right side in FIG. 3 (a)). One). Then, the deflector 4a held by the thermal decomposition part 6 also moves sideways. Along with the movement of the deflector 4a, the ring 15 for suspending the deflector 4a with the support 16 also moves along the inner wall surface of the frame 3, and the movement is stopped by the inner flange 11 of the frame 2. At this time, the valve body 3 integrated with the deflector also moves, so that the valve seat 8 is opened.

When the valve seat 8 is opened, water spouts from the water inlet 7,
It is dispersed on the deflector 4a. At this time, water is sprayed laterally or downward to a predetermined width by the plurality of notches 13 and the blades 14 formed in the deflector 4a. The auxiliary deflector 5 controls the sprinkling area in front of the mounting position.

Since the upper part of the deflector 4a is inclined by about 4 ° in the water conveyance direction A, the water jetted above the deflector 4a has a greater momentum than the water jetted from the non-inclined deflector, and the deflector and the water The flow velocity loss that occurs during a collision is reduced.

The increase in the amount of exercise increases the amount of water from the auxiliary deflector to the watering area. Further, since the flow velocity of the water jetted from the deflector becomes larger than that of the conventional one by reducing the loss of the flow velocity, the sprinkling area is moved in the far direction.

Further, since the auxiliary deflector is inclined upward with respect to the water guide direction, the sprinkling area can be further moved in the far direction.

As a result, the amount of water sprayed to the far water spray area B increases as compared with the conventional side wall type sprinkler head. When the above-mentioned side wall type sprinkler head was attached to a wall surface and subjected to a watering test, water was uniformly sprayed on a watering area having an enlarged watering area B as shown in FIG.

In the embodiment of the present invention, the side wall type sprinkler head which can uniformly spray water in the watering area having the enlarged remote watering area B as shown in FIG. It goes without saying that the same effect is obtained not only in the area but also in the sprinkled area having a wider width.

[0052]

As described above, the sprinkler head of the present invention has a greater water spray amount and flight distance in the horizontal direction, so that the sprinkler head is uniform over a wide water sprinkling area as compared with the conventional horizontal mounting side wall type sprinkler head. It is a side wall type sprinkler head for horizontal mounting which has the excellent feature that water can be sprinkled on the surface.

[Brief description of the drawings]

FIG. 1 is a side sectional view when a side wall type sprinkler head of the present invention is mounted on a wall.

FIG. 2 is an enlarged perspective view of a deflector 4a of the side wall type sprinkler head of the present invention.

FIG. 3 is a side sectional view of the embodiment of the side wall type sprinkler head according to the present invention when water is introduced.

FIG. 4 is a perspective view of a deflector and a support of the side wall type sprinkler head according to the embodiment of the present invention.

FIG. 5 is a schematic view of a sprinkling area of a side wall type sprinkler head of the present invention and a conventional side wall type.

[Explanation of symbols]

 A Water introduction direction 1 Main body 2 Frame 3 Valve body 4 Deflector 4a Deflector 4b Deflector 5 Auxiliary deflector 6 Thermosensitive decomposition unit 7 Water introduction port 8 Valve seat surface 16 Support 16b Support

Claims (6)

[Claims] 1. A side wall type sprinkler head having a plate-shaped deflector and mounted horizontally on a wall or near a wall, wherein a deflector upper part is inclined in a water guiding direction A. 2. The side wall type sprinkler head according to claim 1, wherein the upper part of the deflector is inclined in the water guide direction A by bending a part of the upper part of the deflector in the water guide direction. 3. The side wall according to claim 1, wherein the means for tilting the upper part of the deflector in the water conveyance direction A is formed by piercing a pillar guide hole of the deflector with an inclination, and suspending the deflector on the pillar. Type sprinkler head. 4. The deflector is suspended from a column which is curved or bent downward with respect to the horizontal direction as means for inclining the upper portion of the deflector in the water conveyance direction A.
A sidewall sprinkler head as described. 5. The side wall sprinkler head according to claim 1, wherein the angle of inclination of the deflector is 1 ° to 30 ° with respect to the valve seat surface. 6. The side wall sprinkler head according to claim 1, wherein an auxiliary deflector inclined upward with respect to the water guide direction A is installed on the side wall type sprinkler head having the upper part of the deflector inclined in the water guide direction A.