JP3928107B2 - Sprinkler head - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sprinkler head used in fire extinguishing equipment, and more particularly to a sprinkler head that can sufficiently spray water on the back side of a support member of a deflector.
[0002]
[Prior art]
A conventional sprinkler head includes a valve body that closes the water outlet of the head body, a deflector supported by the head body via a support member, a plurality of radial slits provided on the outer peripheral edge of the deflector, And a heat-sensitive valve opening member disposed between the valve body and the deflector. The support member is erected on the surface of the deflector. As the support member, a columnar guide rod is used in the flash-type sprinkler head, and a horseshoe-shaped frame is used in the frame-type sprinkler head.
[0003]
In this sprinkler head, when the heat-sensitive valve opening member detects the heat of a fire, the valve body drops and the water outlet is opened. Fire extinguishing water discharged from the water outlet collides with the central portion of the deflector and travels toward the outer peripheral edge while being guided by the deflector. A part of the fire-extinguishing liquid falls from the slit to the vicinity of the deflector, and the other is scattered far away from the outer peripheral edge.
[0004]
[Problems to be solved by the invention]
In the conventional sprinkler head, since the support member is erected on the surface of the deflector, fire-extinguishing water heading toward the outer peripheral edge collides with the support member when water is discharged. For this reason, the water for fire extinguishing is difficult to turn to the back side, that is, the back side of the support member, so that the amount of water sprayed is smaller than that of other parts. For this reason, since the amount of water sprayed over the entire head cannot be made uniform, fire extinguishing cannot be performed efficiently.
[0005]
In view of the above circumstances, an object of the present invention is to make the watering amount of the entire head uniform.
[0006]
[Means for Solving the Problems]
The present invention is provided at the center of the head body having a water discharge port, a valve body that closes the water discharge port, a deflector that faces the water discharge port, a frame that connects the deflector and the head main body, and the like. A sprinkler head comprising a heat-sensitive valve opening member that presses the valve body in a valve closing direction ; facing the deflector on the back side opposite to the heat-sensitive valve opening member of the frame and in a radial direction An extending sprinkling reflector is provided, and the sprinkling reflector has an inclined portion fixed to the deflector and a horizontal portion that changes the traveling direction of the fire-extinguishing water scattered along the back surface of the frame. . The sprinkling reflector according to the present invention is provided between the deflector and the frame, and has substantially the same width as the frame .
[0007]
The present invention relates to a head body having a water discharge port, a valve body that closes the water discharge port, a deflector that is opposed to the water discharge port and that has a plurality of radial slits formed at circumferential intervals in the outer peripheral edge portion. A sprinkler head comprising : a pair of frames that connect the deflector and the head body; and a heat-sensitive valve opening member that is provided in the center of the frame and that presses the valve body in a valve closing direction ; Is formed in a disc shape, and an outer peripheral edge portion where the slit is formed is a back surface corresponding portion located on the back surface side opposite to the thermal valve opening member of the frame, and a periphery orthogonal to the pair of frames The back corresponding portion is provided with the longest slit among the plurality of slits, and the open portion has the shortest slit among the plurality of slits. The provided bets, the total slit said back corresponding portion slit total length of the length of all the slits formed in the rear surface corresponding unit, characterized by being longer than that of the opening.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
As a result of repeated research and experiments for solving the above problems, the present inventor has found that the following may be performed. That is, (1) Only the portion corresponding to the back surface of the support member at the outer peripheral edge of the deflector is bent downward so that the fire-extinguishing water can easily flow into the back surface side.
(2) A watering reflector having substantially the same width as that of the support member is provided between the deflector and the support member, and the fire-extinguishing water that collides with the deflector and moves upward is caught by the watering reflector and scattered on the back side. Like that.
[0009]
(3) A slit located substantially obliquely below the support member is bent toward the support member so that the fire-fighting water can easily flow on the back side.
(4) The outer peripheral edge portion of the deflector is divided into a back surface corresponding portion located on the back surface side of the support member and an open portion other than the back surface corresponding portion, and the total length of the slit corresponds to the back surface from the open portion. The part is made longer, so that a lot of water for fire extinguishing falls on the back side.
[0010]
【Example】
A first embodiment of the present invention will be described with reference to FIGS.
The frame-type sprinkler head SP connects the head body 2 having the water outlet 1, the valve body 3 that closes the water outlet 1, the deflector 5 that faces the water outlet 1, and the deflector 5 and the head body 2. A frame 6 and a heat-sensitive valve opening member 10 that presses the valve body 3 in the valve closing direction are provided.
[0011]
The head body 2 is provided with a screw portion 11 that is screwed into a water supply pipe (not shown). The valve body 3 is in pressure contact with the valve seat 2a via a valve seat 3d. A laterally urging spring 15 formed in a linear shape is pressed against the ring-shaped groove 3 g of the valve body 3, and both end portions thereof are locked to the frame 6. Due to the spring force of the spring 15, the valve body 3 always receives a lateral force.
[0012]
The heat-sensitive valve opening member 10 is a glass valve, one end of which is inserted into the receiving groove 3 f of the valve body 3, and the other end is supported by the valve receiver 5 f of the deflector 5. The glass valve 10 presses the valve body 3 in the valve closing direction, and the pressing force is adjusted by an adjusting screw 16 provided on the bottom surface 5 b of the deflector 5.
[0013]
The deflector 5 is formed in a disc shape, and the diameter thereof is, for example, 31 mm. The outer peripheral edge portion 5c thereof is a back surface corresponding portion 5d, that is, a portion positioned on the back surface 6a side of the frame (support member), It is divided into an open portion 5e, that is, a portion other than the back corresponding portion 5d. In the drawing, the open portion 5e is a portion of a peripheral region orthogonal to the pair of frames 6, and is an open portion where water discharge is not hindered by the support member.
[0014]
A plurality of slits 20 a, 20 b, 20 c, 20 d, and 20 e are formed on the outer peripheral edge portion 5 c of the deflector 5 at intervals in the circumferential direction. The widths w of the slits 20a to 20e are formed to be equal to each other, but the slit lengths are sequentially shortened. That is, the slit length is, for example, 1st slit 20a = 7.5mm, 2nd slit 20b = 7mm, 3rd slit 20c = 6.5mm, 4th slit 20d = 5mm, 5th slit 20e = 4.5mm. The first slit 20a located at the center of the back corresponding part 5d is the longest, and the fifth slit 20e of the open part 5e is the shortest.
[0015]
The back corresponding portion 5d is provided with one first long first slit 20a, two second long second slits 20b, and two third long third slits 20c, and an open portion. 5e is provided with two first short fifth slits 20e, two second shortest fourth slits 20d, and one third third slit 20c. Therefore, the total slit length of the back corresponding part 5d, that is, the total slit length of all the slits formed in the back corresponding part 5d is longer than the total slit length of the open part 5e.
[0016]
The central axis of each of the slits 20a to 20e faces the radial direction AR, but the central axis c of the third slit 20c that is the third longest of the back corresponding part 5d is on the back surface 6a side of the support member 6 with respect to the radial direction AR. Inclined. The inclination angle γ is, for example, 8 degrees 30 minutes with respect to the radial direction AR, and the magnitude thereof is appropriately selected as necessary.
[0017]
The outer peripheral edge portion 5c of the deflector 5 is divided into a plurality of divided deflector portions 5A and 5B by the plurality of slits 20a to 20e. The divided deflector portion 5A is located in the back face corresponding portion 5d, and the divided deflector portion 5B is located in the open portion 5e. The divided deflector portion 5A is inclined downward from the divided deflector portion 5B. For example, 5 ° is adopted as the inclination angle θ with respect to the horizontal line F, and the size thereof is appropriately selected as necessary. The
[0018]
A watering reflection plate 22 is provided above the deflector 5. The reflection plate 22 is a plate that abuts the back surface 6 a of the frame 6, and includes a horizontal portion 22 a that extends in the radial direction AR and an inclined portion 22 b that is fixed to the deflector 5. The sprinkling reflection plate 22 has a width substantially the same as the width w of the foam 6, but the size is appropriately selected as necessary. The level and length of the horizontal portion 22a can be appropriately selected as necessary.
[0019]
Next, the operation of this embodiment will be described. When the heat-sensitive valve opening member 10 is damaged due to the occurrence of a fire, the force that presses the valve element 3 in the valve closing direction is lost, and the valve element 3 moves downward by the fire-extinguishing water W.
[0020]
At this time, since the spring force of the lateral biasing spring 15 is acting on the valve body 3, the valve body 3 is moved away from the water outlet 1 at the same time. Therefore, since the valve body 5 does not fall on the deflector 5, so-called lodgement does not occur.
[0021]
Fire extinguishing water ejected from the water outlet 1 collides with the deflector 5 to change the flow direction and scatters toward the outer peripheral edge 5C. A part of the fire-extinguishing water W0 toward the outer peripheral edge 5C collides with the frame 6 and is divided into left and right, and also scatters upward along the rear surface of the frame 60. The fire-extinguishing water W1 that scatters upward collides with the sprinkling reflector 22 and scatters to the outside of the rear surface corresponding portion 5d while changing its traveling direction.
[0022]
The fire-extinguishing water W2 divided into the right and left parts scatters to the back corresponding part 5d side through the slits 20a to 20c and the divided deflector part 5A.
[0023]
Since the divided deflector portion 5A is inclined downward from the other divided deflector portions 5B, the fire-extinguishing water W2 flows more easily than the divided deflector portions 5B, and the fire-extinguishing water tends to gather on the back corresponding portion 5d side. Therefore, sufficient fire-extinguishing water can be sprayed on the back corresponding part 5d side.
[0024]
Since the total slit length of the back corresponding part 5d is longer than the total slit length of the open part 5e, the amount of fire-extinguishing water falling to the back corresponding part 5d side through the slit is larger than that of the open part 5e. Therefore, even if the fire-extinguishing water from the water discharge port 1 is not supplied from the opening 5e to the back corresponding part 5d on the deflector 5 by colliding with the support member 6, sufficient fire extinguishing water is sprayed on the back corresponding part 5d side. I can do it. In addition, since the water for fire extinguishing supplied from the water outlet 1 is supplied without being affected by the support member at all, even if the slits 20c to 20e provided on the open portion 5e side are shortened, the distance is not limited to the vicinity. Can also water enough. In this way, since the watering distribution is made uniform only by changing the length of the slit, the manufacture of the deflector is facilitated.
[0025]
Since the central axis c of the third slit 20c closest to the side surface 6b of the support member 6 of the back surface corresponding part 5d is inclined to the back surface 6a side of the support member 6 with respect to the radial direction AR, the water flow proceeding in the radial direction Can be directed to the back surface 6 a side of the support member 6. Therefore, water can be sufficiently sprayed also on the back corresponding part 5d side.
[0026]
The present invention can be applied not only to a frame-type sprinkler head but also to a flash-type sprinkler head. In this case, a guide rod for hanging a deflector serves as a support member. Further, a fusible link using solder instead of a glass valve may be used as the heat-sensitive valve opening member.
[0027]
【The invention's effect】
Since this invention was comprised as mentioned above, it can fully water on the back corresponding | compatible part side. Therefore, water can be uniformly sprayed over the entire head. That is,
[0028]
(1) Since a watering reflector is provided, fire-fighting water that splashes upward along the back of the frame from the deflector collides with the watering reflector and is scattered to the outside of the rear corresponding part while changing its traveling direction. To do. Therefore, sufficient fire-fighting water can be sprayed on the back corresponding part side.
(2) Since the total slit length of the back corresponding part is longer than the total slit length of the open part, the amount of fire-extinguishing water falling to the back corresponding part side through the slit is larger than that of the open part. Therefore, sufficient fire-fighting water can be sprayed on the back corresponding part side.
[Brief description of the drawings]
FIG. 1 is a front view showing a first embodiment of the present invention.
FIG. 2 is a side view.
FIG. 3 is a bottom view.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is an enlarged plan view of a deflector.
6 is a view showing a part of the enlarged view of FIG. 4;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Water outlet 2 Head main body 5 Deflector 5A Division | segmentation deflector part 5B Division | segmentation deflector part 6 Frame 10 Heat-sensitive valve opening member 20 Slit 22 Sprinkling reflector

Claims (3)

A head body having a water outlet, a valve body that closes the water outlet, a deflector that faces the water outlet, a frame that connects the deflector and the head body, and a valve body that is provided at the center of the frame; A sprinkler head comprising a heat-sensitive valve opening member that presses the valve in a valve closing direction ;
On the back side, which is the opposite direction to the heat-sensitive valve opening member of the frame, is provided with a watering reflector that faces the deflector and extends in the radial direction,
The sprinkler head, wherein the sprinkling reflector has an inclined portion fixed to the deflector and a horizontal portion that changes a traveling direction of fire-extinguishing water scattered along the back surface of the frame . A head body having a water discharge port; a valve body that closes the water discharge port; a deflector that is opposed to the water discharge port and has a plurality of radial slits formed at circumferential intervals in the outer peripheral edge; and the deflector A sprinkler head comprising: a pair of frames that connect the head body to the head body; and a heat-sensitive valve opening member that is provided at the center of the frame and presses the valve body in a valve closing direction ;
The deflector is formed in a disc shape, and an outer peripheral edge portion where the slit is formed is orthogonal to the back surface corresponding portion located on the back surface side opposite to the heat-sensitive valve opening member of the frame and the pair of frames. It is divided into the open area that is the surrounding area part,
While providing the longest slit among the plurality of slits in the back corresponding portion, providing the shortest slit among the plurality of slits in the open portion,
The sprinkler head , wherein the total slit length of all the slits formed in the back corresponding part, which is the total slit length of the back corresponding part, is longer than that of the open part . The sprinkler reflector is disposed between the deflector and the frame, sprinkler head according to claim 1, characterized in that approximately the same width as the frame.

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