JP7456899B2 - Water prevention member, sprinkler head cover, sprinkler head - Google Patents

Description

The present invention relates to a water-coverage prevention member disposed around a sprinkler head body to prevent the sprinkler head body from being flooded with fire extinguishing water, a sprinkler head cover provided with the water-coverage prevention member, and a sprinkler head cover. The invention relates to a sprinkler head equipped with a sprinkler head.

2. Description of the Related Art A sprinkler head installed on a ceiling surface or the like in a room is sometimes provided with a sprinkler head cover for protecting the sprinkler head from external forces such as being hit by objects.
The sprinkler head cover may be provided with a water prevention plate (for example, see Patent Document 1).

FIG. 11 shows a state in which a conventional sprinkler head 15 attached to a ceiling surface 13 having an opening 11 is activated. A conventional water protection plate will be explained based on FIG. 11.
In the sprinkler head 15, as shown in FIG. 11, a sprinkler head cover 23 having a sealing plate 21 for closing the opening 11 is attached to a sprinkler head main body 19, and a water prevention plate 25 is provided on the sprinkler head cover 23. It is being

Here, the function of the water prevention plate 25 will be outlined.
A plurality of sprinkler heads are attached to a ceiling surface or the like at a predetermined interval, but depending on the size of the ceiling surface, the predetermined interval may not be secured, and the distance between adjacent sprinkler heads may become short. In this case, if water from an adjacent sprinkler head falls on its own heat-sensitive portion, a problem arises in that the sensing ability deteriorates.
Therefore, it is required to prevent the sprayed water from falling on the adjacent sprinkler head, and a member having such a function is a water protection plate.
However, it goes without saying that in addition to ensuring that water does not fall on adjacent sprinkler heads, it is also necessary to spray water appropriately so as not to interfere with the original function of extinguishing fires.

As shown in FIG. 12, the conventional water prevention plate 25 has three downwardly sloping plate members 25a arranged in multiple stages (three stages) in the vertical direction. is installed between. The area of the three plates 25a increases in order from the bottom one.

When the sprinkler head 15 equipped with such a water prevention plate 25 sprinkles water, as shown in FIG. It will be done. This can prevent water from falling on the adjacent sprinkler head 15. In addition, it is possible to prevent water from splashing on the sprinkler head when water is sprayed diagonally from above or from the side.
In addition, the water prevention function is a function that prevents the sprinkler head from falling on the sprinkler head next to it, or prevents the sprinkler head from falling on the sprinkler head itself. That's what it means.

Patent No. 3619631

In order for the conventional water protection plate 25 to exhibit the above-described function, the relative positional relationship between the deflector 17 and the water protection plate 25 in the installed state needs to be in the positional relationship assumed in the design.
However, the relative positional relationship between the deflector 17 and the water prevention plate 25 may not always be constant. This point will be explained below.
The water protection plate 25 is attached to a sprinkler head cover 23, and this sprinkler head cover 23 is attached to the sprinkler head main body 19. The method for attaching the sprinkler head cover 23 to the sprinkler head main body 19 is performed as follows.
The cylindrical part of the sprinkler head cover 23 is screwed into the sprinkler head main body part 19 until the sealing plate 21 comes into contact with the opening edge of the ceiling surface 13.

Then, the screwed state is adjusted so that the water prevention plate 25 is placed on the side of the adjacent sprinkler head.
When installing a sprinkler head on a ceiling surface, the mounting position in the height direction with respect to the ceiling surface is specified, but depending on the construction site, the sprinkler head may be installed outside the specified range of the mounting position. Furthermore, since the relative positional relationship with adjacent sprinkler heads differs depending on the construction site, the screwed state of the sprinkler head cover 23 will differ at each site, etc. The positions are not constant, and therefore, the relative positions of the water prevention plate 25 and the deflector 17 in the vertical direction may be higher or lower than designed.
For example, as shown in Fig. 14, if the position of the deflector 17 deviates downward from the position assumed in the design (see Fig. 11), the originally planned water sprinkling trajectory will not follow, and the water prevention function will or the fire extinguishing ability may not be demonstrated.

The present invention has been made to solve these problems, and aims to provide a water-exposure prevention member that can fully perform the water-spraying function and the water-exposure prevention function even if there is a misalignment between the water-exposure prevention member and the deflector, a sprinkler head cover equipped with the water-exposure prevention member, and a sprinkler head equipped with the sprinkler head cover.

(1) The water damage prevention member according to the present invention is arranged around a sprinkler head main body to prevent the sprinkler head main body from being flooded with fire extinguishing water,
It is characterized in that a plurality of rod-shaped members are arranged so as to extend in the vertical direction in the attached state.

(2) Further, in the item described in (1) above, the plurality of rod-shaped members are arranged in a row in the circumferential direction at a predetermined interval, and the rows are plural in the radial direction, and each row in the radial direction is The rod-like members in the rows are arranged in gaps between the rod-like members in adjacent rows.

(3) Furthermore, in the device described in (1) or (2) above, the mounting plate includes a mounting plate for attaching the plurality of rod-shaped members, and the mounting plate removably attaches the upper ends of the plurality of rod-shaped members. The device is characterized by having a plurality of mounting holes for the purpose.

(4) The sprinkler head cover according to the present invention is attached to a sprinkler head main body fixed to piping arranged inside a ceiling surface in which an opening is formed,
A cylindrical part that is inserted into the sprinkler head main body, a sealing plate that is provided to protrude outward from the cylindrical part and closes the opening in the ceiling surface, and any one of (1) to (3) above. The invention is characterized in that it is equipped with the water protection plate according to the above.

(5) A sprinkler head according to the present invention is characterized by comprising the sprinkler head cover described in (4) above and a sprinkler head main body.

The water damage prevention member according to the present invention is arranged around a sprinkler head main body to prevent the sprinkler head main body from being flooded with fire extinguishing water, and includes a plurality of rod-shaped members in an attached state. By being arranged so as to extend in the vertical direction, even if there is a misalignment in the relative position of the water-spraying prevention member and the deflector, the water-sprinkling function and the water-spraying function against the adjacent sprinkler head can be sufficiently maintained. can be demonstrated.

FIG. 1 is an explanatory diagram of a sprinkler head equipped with a water protection member according to an embodiment of the present invention. 2A, 2B, and 2C are diagrams illustrating the water damage prevention member shown in FIG. 1, and are a front view, a plan view, and a right side view, respectively. FIG. 3 is an explanatory diagram (part 1) for explaining the function of the water protection member shown in FIG. 2; FIG. 3 is an explanatory diagram (Part 2) for explaining the function of the water protection member shown in FIG. 2; It is a figure explaining other aspects of a water prevention member, Comprising: They are a front view (a), a top view (b), and a right view (c) (part 1). 11A, 11B, and 11C are diagrams illustrating another embodiment of the water damage prevention member, and are a front view, a plan view, and a right side view (part 2) of the water damage prevention member; These figures explain another embodiment of the water-resistant member, and include a front view (a-1), a plan view (a-2) and a right side view (a-3), a side view of the rod-shaped member (b-1), and a plan view of the rod-shaped member (b-2) (part 3). FIG. 8 is an explanatory diagram illustrating a state in which the water prevention member shown in FIG. 7 is attached. It is a figure explaining other aspects of a water prevention member, Comprising: It is a front view (a), a top view (b), and a right view (c) (part 4). FIG. 10 is an explanatory diagram illustrating a state in which the water prevention member shown in FIG. 9 is attached. It is an explanatory view of a sprinkler head provided with a conventional water prevention plate. 12A, 12B, and 12C are diagrams illustrating the water damage prevention plate shown in FIG. 11, and are a front view, a plan view, and a right side view, respectively. FIG. 13 is an explanatory diagram illustrating the function of the water prevention plate shown in FIG. 12; It is an explanatory view explaining a problem of a conventional water prevention board.

[Embodiment 1]
A water protection member according to an embodiment of the present invention will be described based on FIGS. 1 to 3. Note that the same parts in FIG. 1 as in FIG. 11 showing a conventional example are given the same reference numerals. In addition, in the following description, the directions of up and down are based on the state in which the sprinkler head is attached to a ceiling surface or the like.
As shown in FIG. 1, a water damage prevention member 1 according to an embodiment of the present invention is disposed around a sprinkler head main body 19 constituting a sprinkler head 2 so that the sprinkler head main body 19 is exposed to fire extinguishing water. The water protection member 1, which prevents water from dripping and also prevents water spray from an adjacent sprinkler head from falling on the sprinkler head, has a plurality of rod-shaped members 3 installed in a vertical direction. It is arranged so as to extend to.
Hereinafter, the structure of the water protection member 1 will be explained in detail based on FIG. 2.

The water protection member 1 of the present embodiment supports itself on a sealing plate 21 and has an upper support portion 5 serving as a mounting plate to which a plurality of rod-shaped members 3 are attached, and an upper support portion 5 extending downward from the upper support portion 5. The sprinkler head cover 23 includes a plurality of rod-shaped members 3, a lower support part 7 for supporting the sprinkler head cover 23 at the lower part of the sprinkler head cover 23, and a connecting part 8 for connecting the upper support part 5 and the lower support part 7.

The upper support part 5 is rectangular in plan view and L-shaped in side view. The upright part 5a of the L-shape is inserted into a groove provided in the sealing plate 21 as shown in FIG. 1, and is thereby supported by the sealing plate 21.

The rod-shaped member 3 has a circular cross section perpendicular to the axial direction, and is constituted by a thin cylindrical member.
The arrangement of the rod-shaped members 3 is such that four rod members 3 are lined up in a line in the circumferential direction on the innermost side (the side closest to the sprinkler head main body 19), three pieces are lined up in a line on the outer side thereof, and four pieces are lined up in a line on the outermost side. I'm here. In this way, in this example, the rod-shaped members 3 are provided in three rows in the radial direction.
However, the number of rows in the radial direction of the rod-shaped members 3 of the present invention and the number of rods in each row are not limited to these, and may be set as appropriate and necessary.

Further, the rod-like members 3 in each row in the radial direction are arranged in gaps between the rod-like members 3 in adjacent rows, as shown in FIG. 2(b).
By arranging it in this way, the fire extinguishing water that has collided with the deflector 17 is likely to collide with the rod-shaped members 3 when passing through the plurality of rod-shaped members 3, and its force is weakened, making it easier to direct the water spray trajectory downward.

The lower support part 7 has a hook-shaped locking part when viewed from the side, and can be locked to the outer circumference of the lower end of the sprinkler head cover 23 .
By providing the lower support portion 7, the attached state of the water-covering prevention member 1 can be stably maintained when water spray collides with the member.

The operation of the water protection member 1 configured as described above will be explained based on FIG. 3.
The fire extinguishing water that has collided with the deflector 17 is sprayed toward the water protection member 1 as shown by the arrows (flow of water spray) in FIG. 3 . When fire extinguishing water enters the area where the plurality of rod-shaped members 3 are provided, the water collides with the rod-shaped members 3, passes through the gap, and is sprayed to the outside of the water protection member 1. At this time, the extinguishing water collides with the rod-shaped member 3, which weakens its force and causes the trajectory of the sprayed water to be directed downward. Thereby, it is possible to prevent water from falling on the sprinkler head 2 disposed next to the sprinkler head 2 to which the water protection member 1 is attached.

In addition, since the water-covered prevention member 1 of this embodiment has a structure in which the multiple rod-shaped members 3 extend downward, the arrangement of the rod-shaped members 3 is the same regardless of the position from the top to the bottom of the rod-shaped members 3. Therefore, for example, as shown in Figure 4, even if the position of the deflector 17 (the mounting position of the sprinkler head 2) is shifted downward from the position shown in Figure 1, the water-covered prevention effect, i.e., the effect of changing the trajectory of the water spray downward, is approximately the same as in Figure 1.
Therefore, even if the relative positions of the water damage prevention member 1 and the deflector 17 are misaligned, the water sprinkling function and the water damage prevention function can be exerted to effectively extinguish the fire.

Note that the shape of the rod-like member 3 constituting the water prevention member 1 is not limited to a cylindrical shape, and may be a triangular prism as shown in FIG. 5, for example. When a triangular prism is used, it is preferable to arrange the prism so that the apex of the triangle faces inward in a horizontal section. By doing so, the fire extinguishing water does not create too much resistance when it collides with the fire extinguishing water, and it is possible to obtain the effect of preventing water from being sprayed from the adjacent sprinkler head.

Moreover, the rod-shaped member 3 may be a square prism, as shown in FIG. In this case, as shown in FIG. 6, it is preferable to arrange the rectangle so that its vertices face inward, as in the case of FIG. 5, this will not create too much resistance when the fire extinguishing water collides with the water.
Furthermore, the shape of the rod-shaped member 3 may be other shapes, and it is not necessary that all the rod-shaped members 3 have the same shape, and those of different shapes such as a cylinder, a triangular prism, a square prism, etc. may be mixed. .

Further, in the example shown in FIG. 1, the rod-shaped member 3 is fixed to the upper support part 5, but the rod-shaped member 3 may be detachably attached to the upper support part 5.
For example, as shown in FIG. 7, a mounting hole 9 is provided in the upper support portion 5 serving as a mounting plate at a position where the rod-shaped member 3 is placed, and the upper end of the rod-shaped member 3 is inserted into the mounting hole 9 so that the rod-shaped member 3 can be mounted. do it.
In this case, the rod-shaped member 3 can be inserted into the mounting hole 9 and fixed by making the upper end of the rod-shaped member 3 spherical and forming the constricted portion 3a just below it.

Note that the material of the rod-shaped member 3 is not particularly limited, and may be made of resin, for example, but since fire extinguishing water collides with the rod-shaped member 3, it may be made of a highly rigid material that will not be significantly deformed by the collision, for example. A metal one may also be used.
Further, the head of the rod-shaped member 3 may be shaped to have an enlarged diameter like a bolt head, and a counterbore may be provided at the top of the mounting hole 9 into which the bolt head can fit. A screw may be formed in the surface and the mounting hole 9 to fix the upper part of the rod-shaped member 3 with the screw.

As described above, when mounting holes 9 are provided in the upper support part 5 to make the rod-shaped members 3 attachable and detachable, it is not necessary to attach the rod-shaped members 3 to all of the mounting holes 9; it is sufficient to install only the required number of rod-shaped members 3, depending on the distance between adjacent sprinkler heads 2, the relative positional relationship, etc.
For example, in the example shown in Figure 8, no rod-shaped members 3 are attached to the outermost mounting holes 9, and the rod-shaped members 3 are arranged in two rows in the radial direction. With two rows, the water spray trajectory is closer to horizontal than with three rows. In this way, by making the rod-shaped members 3 detachable from the upper support part 5, it is possible to create an appropriate water spray trajectory depending on the arrangement of the sprinkler head 2.

[Embodiment 2]
In the first embodiment, the water protection member 1 is composed of an upper support part 5, a plurality of rod-shaped members 3, and a lower support part 7, and the upper support part 5 is fixed to the sealing plate 21.
In the water protection member 1 of this embodiment, the sealing plate 21 functions as a mounting plate for attaching a plurality of rod-shaped members 3, and as shown in FIG. Attachment holes 9 for removably attaching the rod-shaped member 3 to the peripheral edge are provided in multiple rows in the radial direction over the entire circumference.

As shown in FIG. 9(a), the shape of the rod-shaped member 3 may be such that the tip of the upper end is spherical and a constricted portion 3a is formed just below the tip.
The rod-shaped members 3 configured in this manner may be installed in a necessary number in a necessary range depending on the installation situation. For example, the example shown in FIG. 10 is an example in which two rows are provided in the radial direction on the right side of the figure.

As described above, according to the present embodiment, it is possible to install the rod-like members 3 in the required number in the required range, and to configure the optimal water protection member 1 according to the installation situation of the sprinkler head 2. be able to. Further, since the sealing plate 21 functions as a mounting plate for mounting the rod-shaped member 3, there is also an effect that the number of parts can be reduced.

1 Water protection member 2 Sprinkler head (Embodiments 1 and 2)
3 Rod-shaped member 3a Narrow portion 5 Upper support portion 5a Vertical portion 7 Lower support portion 8 Connection portion 9 Mounting hole 10 Center opening 11 Opening 13 Ceiling surface 15 Sprinkler head (conventional example)
17 Deflector 19 Sprinkler head main body 21 Sealing plate 23 Sprinkler head cover 25 Water prevention plate (conventional example)
25a Board material

Claims (5)

A water-cover prevention member that is disposed around a sprinkler head body to prevent the sprinkler head body from being covered with fire extinguishing water,
A water damage prevention member comprising a plurality of rod-shaped members arranged to extend vertically when attached. The plurality of rod-like members are arranged in rows in the circumferential direction at predetermined intervals, the rows are plural in the radial direction, and the rod-like members in each row in the radial direction are arranged in gaps between the rod-like members in adjacent rows. The water protection member according to claim 1, characterized in that: Claim 1 or 2, further comprising a mounting plate for mounting the plurality of rod-shaped members, and the mounting plate is provided with a plurality of mounting holes for removably mounting the upper ends of the plurality of rod-shaped members. 2. The water protection member according to item 2. A sprinkler head cover attached to a sprinkler head main body fixed to piping arranged inside a ceiling surface in which an opening is formed,
Any one of claims 1 to 3, comprising: a cylindrical part inserted into the sprinkler head main body; and a sealing plate extending outward from the cylindrical part to close an opening in the ceiling surface. 1. A sprinkler head cover comprising: the water-preventing plate described in . A sprinkler head comprising the sprinkler head cover according to claim 4 and a sprinkler head main body.

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