sprinkler head

Abstract

To provide a sprinkler head that can be installed in the vicinity of a side wall of a ceiling plane and effectively spray firefighting water to the vicinity of the side wall.SOLUTION: A sprinkler head 1 includes: a head body 6 formed in a flow channel 5 through which firefighting water flows from a water introduction port 2 on one end side toward an outlet 12 on the other end side; and a deflector 19. The head body 6 includes a connection part 4 for being connected to a supply pipe 3 for supplying firefighting water to the water introduction port 2 from the outside. An axis line B of a part in the flow channel 5 at least reaching the outlet 12 is inclined in a predetermined direction relative to an axis line A of the supply pipe 3 to be connected to the connection part 4.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a sprinkler head for fire extinguishing, and more particularly to a sprinkler head that can effectively spray water near a wall surface. [Background technology]

[0002] Examples of sprinkler heads that are specialized for spraying water near room walls, etc. include the ``sidewall sprinkler head'' in Patent Document 1, the ``sidewall sprinkler head'' in Patent Document 2, and the ``sidewall foam head for fire extinguishing equipment'' in Patent Document 3.

[0003] The devices disclosed in Patent Documents 1 and 2 are installed horizontally on the side wall. On the other hand, the one in Patent Document 3 is installed in the vicinity of the side wall facing vertically. The device disclosed in Patent Document 3 has a function of limiting the range of spraying the fire extinguishing liquid to a lower half-circumferential area (180-degree area) from the location where the foam head is installed. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-164904 [Patent Document 2] Japanese Patent Application Laid-Open No. 2001-340487 [Patent Document 3] Japanese Utility Model Application Publication No. 6-23548 Summary of the Invention [Problem to be solved by the invention]

[0005] The types installed on the side wall, such as those in Patent Documents 1 and 2, are suitable when there are obstacles such as chandeliers under the ceiling, but are not suitable when you want to install fixtures or the like on the wall, and installing piping inside the side wall is often more difficult than installing it above the ceiling.

[0006] Furthermore, Patent Document 3 is suitable when the protected area is a parking space for a car, a location that is a little distance from the side wall, such as in a multi-level parking lot, but it has the problem that it is difficult to protect the floor surface on the side wall side of the area directly below the head.

[0007] The present invention has been made to solve such problems, and aims to provide a sprinkler head that can be installed near the side wall of a ceiling surface and can effectively spray fire extinguishing water near the side wall. [Means for solving the problem]

[0008] (1) The sprinkler head according to the present invention comprises a head body having a flow path formed therein through which fire extinguishing water flows from a water inlet at one end to a water outlet at the other end, and a deflector. The head body has a connection part for connecting to a supply pipe that supplies fire extinguishing water to the water inlet from the outside, and is characterized in that the axis of at least the part of the flow path leading to the water outlet is inclined in a predetermined direction relative to the axis of the supply pipe connected to the connection part.

[0009] (2) Furthermore, the device described in (1) above is characterized in that it further comprises a valve body that normally closes the water outlet, and a heat-sensitive decomposition unit that supports the valve body in a closed state and decomposes due to the heat of a fire to open the water outlet.

[0010] (3) In addition, in the above (1) or (2), the flow path is characterized in that the one end side is parallel to the axis of the supply pipe and is bent or curved from the middle.

[0011] (4) In addition, in the device described in (1) or (2) above, the flow path is characterized in that the entire flow path is inclined linearly. [Effects of the Invention]

[0012] The sprinkler head according to the present invention can be installed near a side wall on a ceiling surface, and therefore can be installed even in cases where a side wall type sprinkler head cannot be installed on a side wall. Furthermore, even if it is installed alongside a typical ceiling-mounted sprinkler head, it can be installed without creating a sense of incongruity in terms of design, as it is not attached to a side wall. Furthermore, when sprinkler heads are installed at a predetermined interval, if they need to be installed near the walls of a room, installing a conventional sprinkler head means that about half of the spray range will hit the wall, resulting in wasted water. On the other hand, if a sprinkler head is designed to limit the spray range of fire extinguishing water, the spray will be limited to the wall side of the head, leaving an unprotected area near the wall. The sprinkler head of the present invention does not limit the spray range of fire extinguishing water on the wall side of the head, so it can effectively spray water without wasting large amounts of water on the wall while also protecting the floor near the side wall. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a cross-sectional view of a sprinkler head according to an embodiment of the present invention. [Figure 2] 2 is a cross-sectional view of a head body of the sprinkler head shown in FIG. 1. [Figure 3] 1 is a diagram showing the water discharge range of a sprinkler head according to the present embodiment, and the dashed lines in the diagram schematically show the boundaries of the water discharge range. DETAILED DESCRIPTION OF THE INVENTION

[0014] As an example of a sprinkler head according to this embodiment, one equipped with a heat-sensitive decomposition unit will be described with reference to FIG. Before describing the features of the present invention, a general configuration of a sprinkler head will be described with reference to FIG. 1, and then the features of the present invention will be described.

[0015] The sprinkler head 1 according to this embodiment has a general configuration comprising a head body 6 having a connection part 4 for connecting to a supply pipe 3 that supplies fire extinguishing water to a water inlet 2 from the outside and having a flow path 5 through which the fire extinguishing water flows, and a cylindrical frame 9 screwed to a flange part 7 of the head body 6. The cylindrical frame 9 is provided with a heat-sensitive decomposition part 13 that presses a valve body 11 against a water outlet 12 of the head body 6 to seal the pressurized fire extinguishing water, and a deflector 19 having a support 15 and connected to a stopper ring 17 via the support 15. The thermal decomposition unit 13 is configured to include a set pin 21, a disc spring 23, a slider 25, a ball 27, a balancer 29, a plunger 31, a heat insulating material 33, a thermal cover 35, and solder 36.

[0016] 2, the sprinkler head 1 according to this embodiment has a characteristic configuration in which the flow path 5 formed in the head body 6 is configured such that the axis B of the portion of the flow path 5 leading to the water discharge port 12 is inclined by α° in a predetermined direction with respect to the axis A of the supply pipe 3 connected to the connection part 4. In FIG. 2, α represents the angle of inclination.

[0017] In this way, because the flow path 5 of the head body 6 is inclined, when the sprinkler head 1 is installed near the side wall 39 on the ceiling surface 37, as shown in Figure 3, the direction of the flow path 5 can be set so that its axis B points downward and away from the side wall 39. By installing it in this manner, when fire extinguishing water is discharged from the water outlet 12, the amount of water discharged in the direction of the incline and the distance of water discharge can be increased, and water can be discharged onto the floor surface 41 near the side wall while minimizing the collision of fire extinguishing water with the side wall 39.

[0018] The inclination angle α of the flow path 5 may be set in relation to the height of the ceiling surface 37 on which the sprinkler head 1 is installed and the amount of water discharged so that the protection range extends from near the side wall toward the floor surface 41, as shown in Figure 3.

[0019] As described above, the sprinkler head 1 of this embodiment can be installed near the side wall on the ceiling surface 37, and therefore can be installed even when a side wall type sprinkler head to be installed on the side wall 39 cannot be installed. Furthermore, since it is not installed on the side wall 39, it can be installed alongside a typical ceiling-mounted sprinkler head without creating a sense of incongruity in terms of design. Furthermore, since the spray range is not limited, the floor surface 41 near the side wall can also be included in the protected range, allowing for effective water spraying to extinguish a fire.

[0020] In the sprinkler head 1 shown in Figures 1 and 2, the outer diameter of the head body 6 is the same as that of the head body of a conventional sprinkler head, and the internal flow path diameter is made smaller, so that the flow path 5 is inclined in a predetermined direction within the head body 6. Therefore, the amount of water discharged is reduced by the amount of the narrower flow path diameter, making this suitable for limiting the protection area to the vicinity of the side wall. In this case, it may also be possible to reduce the head and the size of the water tank.

[0021] However, the head body of the sprinkler head of the present invention is not limited to this, and by making the head body larger in outer diameter and longer in axial length than that of conventional general sprinkler heads, the flow path diameter can be made thicker even if the flow path is bent or curved, and the amount of water discharged can be made equivalent to that of conventional ones. In this way, the protection range can be made as wide as in the conventional case.

[0022] Furthermore, the sprinkler head 1 shown in Figures 1 and 2 is a closed type having a thermosensitive decomposition section 13 and a water outlet 12 that is normally closed, but the present invention is not limited to this and also includes an open type in which the water outlet is normally open.

[0023] Furthermore, in the sprinkler head 1 shown in Figures 1 and 2, one end side of the flow path 5 of the head body 6, specifically the upper side, is parallel to the axis of the supply pipe 3 and is bent halfway through, but the flow path 5 of the present invention only needs to have the axis B of at least the part leading to the water outlet 12 inclined in a predetermined direction, and for example, the entire flow path may be inclined in a linear manner. [Explanation of symbols]

[0024] 1 sprinkler head 2 Water intake 3 Supply pipe 4 Connection 5 Flow path 6 Head body 7 Flange 9 Cylindrical Frame 11 Valve body 12 Outlet 13 Thermal decomposition unit 15 Posts 17 Stopper Ring 19 Deflector 21 set pins 23 Disc spring 25 Slider 27 balls 29 Balancer 31 Plunger 33 Insulation 35 Thermal cover 36 Solder 37 Ceiling surface 39 Side wall 41 Floor

Claims

1. A sprinkler head comprising: a head body having a flow path through which fire extinguishing water flows from a water inlet on one end side to a water outlet on the other end side, the flow path being formed so that the entire circumference from the water inlet to the water outlet is surrounded by a peripheral wall; and a deflector; The sprinkler head is characterized in that the head body has a connection portion for connecting to a supply pipe that supplies fire extinguishing water to the water outlet from the outside, and the axis of at least the portion of the flow path leading to the water outlet is inclined in a predetermined direction with respect to the axis of the supply pipe connected to the connection portion.

2. A sprinkler head comprising a head body in which a flow path is formed for fire extinguishing water to flow from a water inlet at one end to a water outlet at the other end, a deflector, a valve body that normally closes the water outlet, and a heat-sensitive decomposition section that supports the valve body in a closed state and decomposes due to the heat of a fire to open the water outlet, The sprinkler head is characterized in that the head body has a connection portion for connecting to a supply pipe that supplies fire extinguishing water to the water outlet from the outside, and the axis of at least the portion of the flow path leading to the water outlet is inclined in a predetermined direction with respect to the axis of the supply pipe connected to the connection portion.

3. 3. The sprinkler head according to claim 1, wherein the one end of the flow passage is parallel to the axis of the supply pipe, and is bent or curved midway.

4. A sprinkler head comprising a head body in which a flow path is formed for fire extinguishing water to flow from a water inlet at one end to a water outlet at the other end, and a deflector, A sprinkler head characterized in that the head body has a connection portion for connecting to a supply pipe that supplies fire extinguishing water to the water outlet from the outside, and the flow path is entirely inclined linearly with respect to the axis of the supply pipe connected to the connection portion.

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