Water protection materials, sprinkler head covers

Abstract

To provide a waterproof member capable of sufficiently exhibiting a watering function and a waterproof function, even deviation of relative positions of a waterproof member and a deflector occurs, a sprinkler head cover having the waterproof member, and a sprinkler head comprising the sprinkler head cover.SOLUTION: A waterproof member 1 of the invention is the waterproof member 1 which is arranged in the surrounding of a sprinkler head main body part 19 for waterproofing of the sprinkler head main body part 19 from fire extinction water, in the waterproof member, a plurality of rod-shaped members 3 is arranged so as to extend in a vertical direction in an installed state.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a water exposure prevention member that is placed around a sprinkler head main body to prevent the sprinkler head main body from being exposed to fire extinguishing water, a sprinkler head cover equipped with the water exposure prevention member, and a sprinkler head equipped with the sprinkler head cover. [Background technology]

[0002] A sprinkler head provided on a ceiling surface or the like in a room may be provided with a sprinkler head cover to protect the sprinkler head from external forces such as being struck by an object. A water prevention plate is sometimes provided on the sprinkler head cover (see, for example, Patent Document 1).

[0003] 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 damage prevention plate will be described with reference to FIG. As shown in Figure 11, the sprinkler head 15 has a sprinkler head cover 23 attached to the sprinkler head main body 19, which has a sealing plate 21 for closing the opening 11, and a water prevention plate 25 is provided on the sprinkler head cover 23.

[0004] Here, the function of the water prevention plate 25 will be briefly described. Multiple sprinkler heads are attached at predetermined intervals to ceiling surfaces, etc., but depending on the size of the ceiling surface, it may not be possible to ensure the required spacing, and the distance between adjacent sprinkler heads may become too short. In this case, if the water sprayed from an adjacent sprinkler head falls on the heat-sensing part of the sprinkler head, the detection ability may be reduced. Therefore, it is necessary to prevent the water sprayed by one sprinkler head from falling on an adjacent sprinkler head, and the component that has this function is a water protection plate. Of course, it goes without saying that it is necessary to ensure that water does not fall on adjacent sprinkler heads, and that water is sprayed appropriately so as not to interfere with the sprinkler's primary function of extinguishing a fire.

[0005] As shown in Fig. 12, the conventional water damage prevention plate 25 is made up of three downwardly inclined plates 25a arranged in multiple stages (three stages) in the vertical direction and attached between the lower end of the sprinkler head cover 23 and the sealing plate 21. The areas of the three plates 25a increase from the bottom up.

[0006] When a sprinkler head 15 equipped with such a water damage prevention plate 25 sprays water, as shown in Figure 13, the fire extinguishing water hits the deflector 17 and is sprayed outward, and is redirected diagonally downward by the water damage prevention plate 25. This prevents the water from falling on an adjacent sprinkler head 15. It also prevents water from splashing on the sprinkler head when sprayed diagonally from above or to the side. The function of preventing water from falling on adjacent sprinkler heads, or preventing water from adjacent sprinkler heads from falling on one sprinkler head, is called the water exposure prevention function. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 3619631 Summary of the Invention [Problem to be solved by the invention]

[0008] In order for the conventional water damage prevention plate 25 to perform the above-mentioned function, the relative positional relationship between the deflector 17 and the water damage prevention plate 25 in the installed state must be the positional relationship assumed in the design. However, the relative positional relationship between the deflector 17 and the water damage prevention plate 25 may not always be constant. This point will be explained below. The water damage prevention plate 25 is attached to the sprinkler head cover 23, and this sprinkler head cover 23 is attached to the sprinkler head body 19. The sprinkler head cover 23 is attached to the sprinkler head body 19 as follows. The cylindrical portion of the sprinkler head cover 23 is screwed onto the sprinkler head body 19 until the sealing plate 21 abuts against the edge of the opening in the ceiling surface 13 .

[0009] Then, the screwing state is adjusted so that the water damage prevention plate 25 is positioned on the side of the adjacent sprinkler head. When a sprinkler head is attached to a ceiling, its height relative to the ceiling is specified, but depending on the construction site, it may be installed outside of this specified range of mounting positions. Furthermore, since the relative positional relationship between adjacent sprinkler heads varies depending on the construction site, the screw-in state of sprinkler head cover 23 varies from site to site, and the relative height position of sprinkler head cover 23 and sprinkler head main body 19 is not constant. Therefore, the relative vertical position of water damage prevention plate 25 and deflector 17 may be higher or lower than designed. For example, as shown in Figure 14, if the position of the deflector 17 is shifted downward from the position assumed in the design (see Figure 11), the water spray trajectory will not be as originally intended, and the water protection function or fire extinguishing ability will not be able to be exerted.

[0010] The present invention has been made to solve such problems, and aims to provide a water-exposure prevention member that can fully perform its water-spraying function and water-exposure prevention function even if there is a misalignment in the relative position 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. [Means for solving the problem]

[0011] (1) The water damage prevention member according to the present invention is arranged around the sprinkler head body to prevent the sprinkler head body from being damaged by fire extinguishing water, The device is characterized in that a plurality of rod-shaped members are arranged so as to extend in the vertical direction when attached.

[0012] (2) Furthermore, in the above (1), the plurality of rod-shaped members are arranged in rows in the circumferential direction at predetermined intervals, and the rows are arranged in multiple rows in the radial direction, and the rod-shaped members in each radial row are arranged in the gaps between the rod-shaped members in adjacent rows.

[0013] (3) Furthermore, in the above (1) or (2), a mounting plate for mounting the plurality of rod-shaped members is provided, and the mounting plate is characterized by having a plurality of mounting holes for detachably mounting the upper ends of the plurality of rod-shaped members.

[0014] (4) The sprinkler head cover according to the present invention is attached to a sprinkler head body fixed to a pipe arranged inside a ceiling surface having an opening, It is characterized by comprising a cylindrical portion that is inserted into the sprinkler head main body, a sealing plate that extends outward from the cylindrical portion and covers the opening in the ceiling surface, and a water-proof plate described in any one of (1) to (3) above.

[0015] (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. [Effects of the Invention]

[0016] The water-exposure prevention member of the present invention is arranged around the sprinkler head main body to prevent the sprinkler head main body from being exposed to fire extinguishing water, and since multiple rod-shaped members are arranged so that they extend vertically when installed, even if there is a misalignment in the relative positions of the water-exposure prevention member and the deflector, it can fully perform its water-spraying function and its function of preventing water from being exposed to adjacent sprinkler heads. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is an explanatory diagram of a sprinkler head provided with a water damage prevention member according to an embodiment of the present invention; [Figure 2] 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. [Figure 3] FIG. 3 is an explanatory diagram (part 1) illustrating the function of the water damage prevention member shown in FIG. 2. [Figure 4] FIG. 3 is an explanatory diagram (part 2) illustrating the function of the water damage prevention member shown in FIG. 2. [Figure 5] 10A, 10B, and 10C are diagrams illustrating another embodiment of the water damage prevention member, and are a front view (a), a plan view (b), and a right side view (c) (part 1). [Figure 6] 10A, 10B, and 10C are diagrams illustrating another embodiment of the water damage prevention member, and are a front view (a), a plan view (b), and a right side view (c) (part 2). [Figure 7] This figure explains another embodiment of the water-prevention member, and includes a front view (a-1), a plan view (a-2), 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). [Figure 8] 8 is an explanatory diagram illustrating an attached state of the water damage prevention member shown in FIG. 7.

[0023] FIG. [Figure 9] 10A, 10B, and 10C are diagrams illustrating another embodiment of the water damage prevention member, including a front view (a), a plan view (b), and a right side view (c) (part 4). [Figure 10] 10 is an explanatory diagram illustrating an attached state of the water damage prevention member shown in FIG. 9.

[0033] FIG. [Figure 11]FIG. 10 is an explanatory diagram of a sprinkler head equipped with a conventional water-blocking plate. [Figure 12] 12A, 12B, and 12C are diagrams illustrating the water damage prevention plate shown in FIG. 11, and are a front view (a), a plan view (b), and a right side view (c). [Figure 13] 13 is an explanatory diagram illustrating the function of the water damage prevention plate shown in FIG. 12. FIG. [Figure 14] 1 is an explanatory diagram illustrating a problem with a conventional water damage prevention plate. DETAILED DESCRIPTION OF THE INVENTION

[0018] [Embodiment 1] A water damage prevention member according to one embodiment of the present invention will be described with reference to Figures 1 to 3. In Figure 1, the same parts as those in Figure 11, which shows a conventional example, are given the same reference numerals. In the following description, the up and down directions are based on the state in which the sprinkler head is attached to a ceiling surface or the like. As shown in Figure 1, a water damage prevention member 1 according to one embodiment of the present invention is arranged around the sprinkler head main body 19 that constitutes the sprinkler head 2 to prevent the sprinkler head main body 19 from being covered with fire extinguishing water, and also prevents water sprayed from an adjacent sprinkler head from falling on the sprinkler head.The water damage prevention member 1 is composed of a plurality of rod-shaped members 3 that are arranged so that they extend vertically when installed. The configuration of the water damage prevention member 1 will be described in detail below with reference to FIG.

[0019] The water prevention member 1 of this embodiment comprises an upper support portion 5 which serves as a mounting plate that supports the member on the sealing plate 21 and to which multiple rod-shaped members 3 are attached, multiple rod-shaped members 3 extending downward from the upper support portion 5, a lower support portion 7 for supporting the member on the lower part of the sprinkler head cover 23, and a connecting portion 8 which connects the upper support portion 5 and the lower support portion 7.

[0020] The upper support part 5 has a rectangular shape in a plan view and an L-shape in a 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.

[0021] The rod-shaped member 3 has a circular cross section perpendicular to the axial direction and is made of a thin cylindrical member. The rod-shaped members 3 are arranged in a row of four in the circumferential direction on the innermost side (the side closest to the sprinkler head main body 19), a row of three on the outer side thereof, and a row of four on the outermost side thereof. In this way, in this example, the rod-shaped members 3 are arranged in three rows in the radial direction. However, the number of rows of the rod-shaped members 3 in the radial direction and the number of each row are not limited to these, and may be set as appropriate according to the needs.

[0022] As shown in FIG. 2(b), the rod-shaped members 3 in each row in the radial direction are arranged in the gaps between the rod-shaped members 3 in the adjacent rows. By arranging the deflector 17 in this manner, the fire extinguishing water that collides with the deflector 17 is more likely to collide with the rod-shaped members 3 as it passes through the multiple rod-shaped members 3, weakening its momentum and making it easier to direct the water spray trajectory downward.

[0023] The lower support portion 7 has a hook-shaped locking portion in a side view, which can be locked to the outer periphery of the lower end of the sprinkler head cover 23. By providing the lower support portion 7, the attached state of the water damage prevention member 1 can be stably maintained when sprayed water hits it.

[0024] The operation of the water damage prevention member 1 configured as above will be described with reference to FIG. The extinguishing water that collides with the deflector 17 is sprayed toward the water coverage prevention member 1 as shown by the arrows (flow of water spray) in Figure 3. When the extinguishing water enters the area where multiple rod-shaped members 3 are provided, it collides with the rod-shaped members 3, passes through the gaps between them, and is sprayed to the outside of the water coverage prevention member 1. At this time, the force of the extinguishing water is weakened by colliding with the rod-shaped members 3, and the trajectory of the water spray becomes downward. This prevents the water from falling on a sprinkler head 2 that is placed next to the sprinkler head 2 to which the water coverage prevention member 1 is attached.

[0025] Furthermore, since the water damage prevention member 1 of this embodiment has a structure in which 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. For this reason, even if the position of the deflector 17 (the mounting position of the sprinkler head 2) is shifted downward from the position shown in Fig. 1, as shown in Fig. 4, for example, the water damage prevention effect, i.e., the effect of changing the trajectory of water spray downward, is substantially the same as in Fig. 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 for effective fire extinguishing can be exerted.

[0026] The shape of the rod-shaped members 3 that make up the water damage prevention member 1 is not limited to a cylindrical shape, and may be, for example, a triangular prism as shown in Fig. 5. When a triangular prism is used, it is preferable to arrange it so that the apex of the triangle faces inward in the horizontal cross section. This prevents excessive resistance when the sprayed fire extinguishing water collides, and can provide a water damage prevention effect against water sprayed from adjacent sprinkler heads.

[0027] The rod-shaped member 3 may also be a square pillar, as shown in Fig. 6. In this case, it is preferable to arrange the vertices of the square so that they face inward, as in Fig. 6, since this does not create too much resistance when the discharged fire-extinguishing water collides with the rod-shaped member, as in the case of Fig. 5. Furthermore, the rod-shaped members 3 may have other shapes, and all the rod-shaped members 3 do not have to have the same shape, and different shapes such as cylinders, triangular prisms, and square prisms may be mixed.

[0028] Furthermore, 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 attached to the upper support part 5 in a detachable manner. For example, as shown in Figure 7, an attachment hole 9 may be provided in the upper support part 5 serving as an attachment plate at a position where the rod-shaped member 3 will be placed, and the upper end of the rod-shaped member 3 may be inserted into the attachment hole 9 to enable attachment. In this case, by making the tip of the upper end of the rod-shaped member 3 spherical and forming a constricted portion 3a immediately below it, the rod-shaped member 3 can be inserted into the mounting hole 9 and fixed.

[0029] The material of the rod-shaped member 3 is not particularly limited and may be, for example, resin, but since the fire extinguishing water will collide with the rod-shaped member 3, it may be made of a highly rigid material, such as metal, that will not be significantly deformed by the collision. In addition, the head of the rod-shaped member 3 may be shaped with an expanded diameter like the head of a bolt, and a countersink may be provided at the top of the mounting hole 9 to accommodate the bolt head, or threads may be formed on the upper peripheral surface of the rod-shaped member 3 and the mounting hole 9 so that the top of the rod-shaped member 3 is screwed in place.

[0030] As described above, when mounting holes 9 are provided in the upper support part 5 to allow the rod-shaped members 3 to be attached and detached, it is not necessary to attach 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 and relative positional relationship between adjacent sprinkler heads 2, 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 placement of the sprinkler head 2.

[0031] [Embodiment 2] In the first embodiment, the water damage prevention member 1 is configured by the upper support portion 5, the plurality of rod-shaped members 3, and the lower support portion 7, and the upper support portion 5 is fixed to the sealing plate 21. The water prevention member 1 of this embodiment functions as a mounting plate for attaching a plurality of rod-shaped members 3 to the sealing plate 21, and as shown in Figure 9, mounting holes 9 for detachably attaching the rod-shaped members 3 are provided around the entire circumference of the central opening 10 of the sealing plate 21 in multiple rows in the radial direction.

[0032] 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 immediately below the tip, as shown in FIG. 9(a). The rod-shaped members 3 configured in this manner may be installed in the required number in the required range depending on the installation situation. For example, the example shown in Fig. 10 is an example in which two rows are installed in the radial direction on the right side of the drawing.

[0033] As described above, according to this embodiment, the rod-shaped members 3 can be installed in the required range in the required number, and the optimum water damage prevention member 1 can be configured depending on the installation conditions of the sprinkler head 2. In addition, since the sealing plate 21 functions as a mounting plate for attaching the rod-shaped members 3, there is also the effect of reducing the number of parts. [Explanation of symbols]

[0034] 1 Water prevention member 2 Sprinkler head (embodiments 1 and 2) 3 Rod-shaped members 3a Waist 5 Upper support part 5a Standing section 7 Lower support part 8 Connecting part 9 Mounting holes 10 Central opening 11 Opening 13 Ceiling surface 15 Sprinkler head (conventional example) 17 Deflector 19 Sprinkler head body 21 Sealing Plate 23 Sprinkler head cover 25 Water-proof plate (conventional example) 25a plate material

Claims

1. A water exposure prevention member is provided on a sprinkler head having a deflector, and prevents a heat-sensing part of the sprinkler head arranged around the sprinkler head from being exposed to water caused by fire extinguishing water whose spray direction changes when it collides with the deflector, A water prevention member comprising an upper support portion that supports its upper portion, a lower support portion that is connected to the upper support portion by a connecting portion and supports its lower portion, and a plurality of rod-shaped members attached to the upper support portion, and configured so that fire extinguishing water that collides with the deflector collides with the rod-shaped members and is sprayed outward.

2. A sprinkler head cover is attached to a sprinkler head body of a sprinkler head having a sprinkler head body fixed to a pipe arranged inside a ceiling surface having an opening and a deflector, A sprinkler head cover is characterized by comprising a cylindrical portion into which the sprinkler head main body is inserted, a sealing plate that extends outward from the cylindrical portion to cover the opening in the ceiling surface, and a plurality of rod-shaped members attached to the sealing plate as water prevention members, and is configured so that fire extinguishing water that collides with the deflector collides with the rod-shaped members and is sprayed outward.

Images