JP3845507B2 - Sidewall type sprinkler head - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sprinkler head that extinguishes fire by spraying water in the event of a fire, and more particularly to a sidewall-type sprinkler head that is mounted sideways on a wall surface or a wall.
[0002]
[Prior art]
The sprinkler head is used to extinguish fire by spraying water when a fire occurs. In general, the sprinkler head is vertically mounted on the ceiling surface and sprays water from above toward the fire source. However, if a lighting fixture such as a chandelier is hung from the ceiling, the lighting fixture will obstruct water spraying from the sprinkler head, and if it is a decorative ceiling such as a louver, the sprinkler head and piping will be visible, making it an interior design. The problem of not being in a favorable state arises. In such a case, the sprinkler head is attached to the wall surface or near the wall of the room. Sprinkler heads attached to walls and walls are called side wall type sprinkler heads (SW sprinkler heads). In the event of a fire, water is not sprayed toward the ceiling, which is not the source of the fire. Water can be sprayed toward the original.
[0003]
There are two types of SW sprinkler heads: one that is mounted vertically on the ceiling or near the wall of the room (vertical mounting SW sprinkler head) and one that is mounted horizontally on the wall or wall of the room (horizontal mounting SW sprinkler head). is there.
[0004]
By the way, when the ceiling plate is not stretched on the ceiling of the room, or when the space between the ceiling and the floor on the floor is too narrow to install fire extinguishing piping, the downward-facing vertical mounting SW sprinkler The head cannot be mounted on the ceiling. This is because the downward-facing vertical mounting SW sprinkler head is mounted by being screwed into a pipe in the ceiling.
[0005]
In addition, when installing the vertical mounting SW sprinkler head on the side of the wall with a slight distance from the wall, the piping projecting horizontally from the wall must be raised with a joint such as an elbow. It takes time and extra costs. Therefore, as the SW sprinkler head to be attached to the wall surface or near the wall, a horizontal attachment SW sprinkler head that is directly attached sideways to the pipe in the wall is suitable.
[0006]
A number of vertically mounted SW sprinkler heads have been proposed, such as Japanese Unexamined Patent Publication No. 64-5570, Japanese Utility Model Publication No. 52-106000, Japanese Utility Model Application Publication No. 55-30175. It was only proposed in No. 5-24058. This horizontal mounting SW sprinkler head is a sprinkler head provided with a long eaves.
[0007]
[Problems to be solved by the invention]
The horizontal mounting SW sprinkler head proposed in Japanese Utility Model Publication No. 5-24058 is easy to manufacture because it only has a eave installed on the conventional sprinkler head, and is inexpensive and unnecessary spraying in the ceiling direction. There is no, and it is appropriately distributed to the middle of the room. However, the SW sprinkler head with only the eaves installed did not comply with the Japanese Fire Service Standard. According to the Japanese Fire Service Act, the SW sprinkler head must be evenly sprayed from the mounting part to the spraying area of 3.6m x 3.6m from the floor surface. As shown in FIG. 7, the SW sprinkler head not only has a portion (Y) that is scattered more than necessary on both sides, but also has a non-sprayed area (Z) on both sides, and it is further forward than necessary. The part (X) to be spread was made, and it was a thing. It is an object of the present invention to provide a SW sprinkler head that can be uniformly distributed in a predetermined distribution area in a horizontal mounting SW sprinkler head.
[0008]
[Means for Solving the Problems]
As a result of intensive research on the cause of spraying farther than necessary in the conventional horizontal mounting SW sprinkler head, the present inventor has found that the cause is the shape of the deflector, and improved the shape of the deflector. The present invention has been completed by paying attention to the fact that an SW sprinkler head compatible with the Fire Service Act can be obtained.
[0009]
The present invention includes a main body having a water guide hole, a frame extending from the main body in the water discharge direction of the water guide hole, and a plate-shaped deflector that is installed facing the water discharge direction of the water guide hole. In the side wall type sprinkler head that is connected to the pipe in a horizontal orientation, an auxiliary deflector is attached to the upper part of the deflector, the tip of which is inclined toward the deflector and fixed to the frame, separated from the deflector. The sidewall sprinkler head is characterized in that a recess is formed in the upper part of the deflector, and the recess is cut out in a concave shape toward the center of the deflector .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The dent formed in the upper part of the deflector in the present invention is a shape in which the center is deeply recessed downward, such as an inverted arc shape or an inverted isosceles triangle.
[0011]
In the SW sprinkler head of the present invention, a recess is formed in the upper part of the deflector, the auxiliary deflector is inclined downward, or a lateral blade is formed at both sides of the deflector, and a part of the blade is disposed in the direction of the water introduction hole. It is possible to further improve the spraying state by tilting the sway.
[0012]
The SW sprinkler head of the present invention has a plate-shaped deflector, for example, a plate-shaped deflector is housed in the main body during normal times, and pops out at a fixed distance when a fire breaks out. A horseshoe-shaped frame yoke projects from the frame yoke-type sprinkler head or the like having a plate-like deflector installed at its tip. In addition, these sprinkler heads are closed when the valve seat is closed by the valve body, and the valve body is held by the thermal decomposition part. An open-type sprinkler head or the like that sprays water by opening a simultaneous opening valve with a signal detected by a heat sensing device.
[0013]
【Example】
The SW sprinkler head of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view after operation of a flash sprinkler head to which the present invention is applied, FIG. 2 is a side sectional view showing a state in which the flash sprinkler head to which the present invention is applied is attached to a wall surface, and FIG. 3 is a flash sprinkler. FIG. 4 is an enlarged perspective view of the deflector of the head, FIG. 4 is a side sectional view of the frame yoke type sprinkler head to which the present invention is applied, and FIG. 5 is a perspective view of the deflector of the frame yoke type sprinkler head.
[0014]
First, the flash sprinkler head shown in FIGS. The flash-type sprinkler head includes a main body 1, a frame 2, a valve body 3, a deflector 4, an auxiliary deflector 5, a thermal decomposition portion 6, and the like.
[0015]
The main body 1 has a water introduction hole 7 in the center, and an end portion is a valve seat 8. A male screw 9 is screwed on the outer periphery of the main body 1, and an end portion is a flange 10.
[0016]
The frame 2 has a cylindrical shape, one end is an inner flange 11, and the other end is screwed to the flange 10 of the main body 1.
[0017]
The valve body 3 is disk-shaped and has a packing attached to one side, and closes the valve seat 8 of the main body 1 in a watertight state during normal times.
[0018]
As shown in FIG. 3, the deflector 4 has a circular plate shape, and a recess 12 having a deep center is formed at the top. As for the dent of the deflector employ | adopted here, an upper part is a reverse circular arc shape. A plurality of slits 13 are formed laterally on both sides of the deflector 4, and the portions formed by the slits are blades 14. A part of the blade 14 is bent with a slight inclination in the direction of the water guide hole. The deflector 4 is suspended by two struts 16 and 16 fixed to the ring 15.
[0019]
An auxiliary deflector 5 is installed above the deflector 4 so as to be spaced apart. The auxiliary deflector 5 is formed by inclining a rectangular plate downward at an angle of about 4 degrees with respect to the horizontal direction, and a rising portion is fixed to the flange 11 of the frame 2. Accordingly, between the recesses 12 of the auxiliary deflector 5 and the deflector 4, as shown in FIG. 1, both sides of the recess 12 are slightly narrowed and gradually become wider toward the center. Incidentally, the SW sprinkler head of Japanese Utility Model Laid-Open No. 5-24058 has an equal distance between the eaves and the deflector.
[0020]
The thermal decomposition portion 6 is disposed at a portion extending from the frame 2 and holds the valve body 3 via a guide post 17. Since the thermal decomposition portion is well known (Japanese Patent Publication No. 58-36985), detailed description thereof is omitted here.
[0021]
As shown in FIG. 2, the flush sprinkler head has a hole 19 formed in a wall 18 of the room, and is attached to a pipe 20 in the wall sideways through the hole. The hole 19 in the wall 18 is slightly larger than the flash sprinkler head, and the hole is covered with a sealing plate 21 in order to prevent the inside of the wall from being seen around the hole and wind from entering and exiting from the hole. .
[0022]
Next, the operation in the event of a fire in the flash sprinkler head to which the present invention is applied will be described.
[0023]
When a fire occurs, the thermal decomposition portion 6 is decomposed at an abnormally high temperature of the fire, and all the parts constituting the thermal decomposition portion are blown sideways (right side in FIG. 2). Then, the deflector 4 held by the thermal decomposition portion 6 also moves sideways. Along with the movement of the deflector 4, the ring 15 that suspends the deflector 4 with the support 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, since the valve body 3 integrated with the deflector also moves, the valve seat 8 is opened.
[0024]
When the valve seat 8 is opened, water is ejected from the water guide hole 7 and hits the deflector 4 to be dispersed. At this time, the horizontal and downward spraying is sprayed to a predetermined width by a plurality of notches 13 ... and blades 14 ... formed in the deflector 4. And it controls by the dent 12 of the auxiliary | assistant deflector 5 and the deflector 4 with respect to the spreading area ahead of an attachment position. In other words, if the distance between the auxiliary deflector and the deflector is constant, as in the case of the conventional horizontal mounting SW sprinkler head, the center part is sprayed beyond the predetermined spraying area, and it is not sprayed to the spraying areas on both sides of the front. A part is made. This is considered to be because the water scattered along the circular auxiliary deflector is sprayed in a circular shape and the top of the circle is sprayed in the distance. However, if an auxiliary deflector is installed above the deflector as in the present invention and a concave portion with a deep central portion is formed at the top of the deflector, the amount of water passing through the deepened portion increases. It will not scatter far away than necessary.
[0025]
Next, a SW sprinkler head in which the present invention is applied to a frame yoke type sprinkler head will be described.
[0026]
The frame yoke type sprinkler head includes a main body 31, a frame yoke 32, a valve body 33, a deflector 34, an auxiliary deflector 35, a thermal decomposition portion 36, and the like.
[0027]
The main body 31 has a water introduction hole 37 formed in the center and a valve seat 38 at the other end. A male screw 39 is screwed on the outside of the main body 31.
[0028]
The frame yoke 32 protrudes in the shape of a horseshoe from the vicinity of the valve seat 38, and the tip thereof is a boss 40.
[0029]
The valve body 33 has a disc shape and is covered with packing on one side, and closes the valve seat 38 of the main body 31 in a watertight state during normal times.
[0030]
As shown in FIG. 5, the deflector 34 has a rectangular plate shape and is fixed to the tip of the boss 40. In the upper part of the deflector 34, a recess 41 having a deep center is formed. The upper part of the deflector shown in FIG. 5 is a recess with an inverted isosceles triangle. Further, a plurality of notches 42 are formed on both sides of the deflector 34, and a plurality of blades 43 are formed sideways by the notches. A part of the blade 43 is bent in a state inclined approximately 15 degrees in the direction of the water guide hole.
[0031]
Auxiliary deflector 35 is spaced above the deflector 34. The auxiliary deflector 35 is obtained by inclining a rectangular plate about 4 degrees downward in the horizontal direction, and a rising portion is fixed to an end portion of the main body 31.
[0032]
The heat-sensitive decomposition part is installed between the valve body 32 and the boss 40 and presses the valve body 33 during normal times. Since the structure of the thermal decomposition portion used in this frame yoke type sprinkler head is well known (Japanese Utility Model Publication No. 42-16553), detailed description thereof is omitted here.
[0033]
Next, the operation when a fire occurs in the frame yoke type sprinkler head to which the present invention is applied will be described.
[0034]
When a fire occurs, the thermal decomposition part 36 is decomposed at an abnormally high temperature of the fire, and all the parts constituting the thermal decomposition part are blown downward. Then, the valve element 33 pressed by the thermal decomposition portion 36 also falls and the valve seat 38 is opened.
[0035]
When the valve seat 38 is opened, water is ejected from the water guide hole 37 and hits the deflector 34 to be dispersed. At this time, the horizontal or downward spray is spread to a predetermined width by a plurality of blades 43... Formed on the deflector 34. Then, the front spraying area from the attachment position is controlled by the auxiliary deflector 35 and the recess 41 of the deflector 34.
[0036]
When the above-mentioned flash type SW sprinkler head and frame yoke type SW sprinkler head were attached to the wall surface and a spraying test was conducted, as shown in FIG. There was no unnecessary spraying.
[0037]
【The invention's effect】
As described above, the sprinkler head of the present invention is excellent in reliability that it is not sprayed unnecessarily protruding in front of a predetermined spraying area, and can be sprayed uniformly over the entire spraying area stipulated in the Fire Service Law. It is a thing.
[Brief description of the drawings]
FIG. 1 is a perspective view of a flash-type sprinkler head to which the present invention is applied during operation. FIG. 2 is a side cross-sectional view of a flash-type sprinkler head to which the present invention is applied. Fig. 4 is an enlarged perspective view of a deflector of a sprinkler head. Fig. 4 is a side sectional view of a frame yoke type sprinkler head to which the present invention is applied. Fig. 5 is a perspective view of a deflector of a frame yoke type sprinkler head. ] Sprinkler state in the side wall type sprinkler head of the present invention [FIG. 7] Spread state in the conventional side wall type sprinkler head
DESCRIPTION OF SYMBOLS 1 Main body 2 Frame 3 Valve body 4 Deflector 5 Auxiliary deflector 6 Thermal decomposition part 12 Recess 13 Notch 14 Blade

Claims (3)

It has a main body with a water introduction hole, a frame extending from the main body in the direction of water discharge of the water supply hole, and a plate-shaped deflector installed facing the water discharge direction of the water supply hole. in the sidewall type sprinkler head connected to the pipe, the auxiliary deflector in the upper portion of the deflector tip is fixed to the frame is inclined deflector side, with being placed apart from the deflector, the upper portion of the deflector The side wall type sprinkler head is characterized in that a dent is formed in the dent, and the dent is cut out in a concave shape toward the center of the deflector .   The sidewall-type sprinkler head according to claim 1, wherein the recess has an inverted arc shape.   The sidewall-type sprinkler head according to claim 1, wherein the recess is an inverted isosceles triangle.

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