JP2009226014A - Sprinkler head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sprinkler head capable of immediately fire extinguishing by prevention of deformation of an opening part in the case where a ceiling board and a fallen member contact the sprinkler head and hit the open end of a cylindrical member by an earthquake disaster or the like. <P>SOLUTION: The head includes a plug plate for preventing deformation of the storing part of a temperature fuse at a tubular open end of the storing part of the temperature fuse or in its proximity, and so the opening part is prevented from deformation even if a ceiling board and a fallen member contact the sprinkler head and hit the open end of the cylindrical member by an earthquake disaster or the like, and not only a normal fire but also a fire happening in earthquake disasters can be immediately extinguished. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an improvement in a sprinkler head connected to an end of a sprinkler pipe laid on each floor in a sprinkler fire extinguishing equipment that is an automatic fire extinguishing equipment installed on a ceiling portion of each floor such as a high-rise building.

In general, this type of sprinkler head has a sprinkler head body connected to a fire-extinguishing water pipe, a valve that closes the water outlet against the opening pressure of the water pressure or the opening urging means, and when a predetermined high temperature is detected And a heat-sensitive operating part for operating the valve so as to open the water outlet.
The heat-sensitive operating part is provided between a tubular member that is fixed to the sprinkler head body and that opens downward, a valve body that can be moved up and down in the tubular member, and the valve body and the tubular member. When the temperature fuse is at a certain volume, keep the valve closed so that the temperature fuse is eluted by the heat of the fire and the outlet opens when the volume decreases or disappears. It is formed with a trigger mechanism that opens the valve at once.

And the valve body is accommodated in the heat sensitive operation part in the state which gave the slight clearance which a temperature fuse melt | dissolves in the cylindrical member which the downward opening opens.
Therefore, in such a thing, a ceiling part shakes by an earthquake disaster etc., for example. If this ceiling part shakes and the ceiling plate or a collapsing member comes into contact with the sprinkler head and hits the open end of the cylindrical member and deforms that part, then a fire will occur and the thermal fuse will melt out. However, there is a problem that the valve body does not operate and the sprinkler does not function.
JP 2006-426 A Japanese Patent Laid-Open No. 2005-304877 Japanese Patent Laid-Open No. 2004-243032

  The present invention has been proposed in view of the above problems, and even when a ceiling plate or a member collapsing due to an earthquake or the like comes into contact with the sprinkler head and hits the opening of the cylindrical member, the opening portion It is an object of the present invention to provide a sprinkler head that can immediately extinguish when a fire occurs by preventing the deformation of the head.

  In order to achieve the above object, a sprinkler head according to the present invention resists the pressure of the sprinkler head main body connected to the fire-extinguishing water distribution pipe and the water discharge port in the sprinkler head main body against the valve pressure of the hydraulic pressure or the opening urging means. A tubular member that is fixed to the sprinkler head body and that opens downward, and a tubular member that includes a valve that closes in a closed position, and a heat-sensitive operation unit that operates the valve to open the water discharge port when a predetermined high temperature is detected. A valve body that can be moved up and down inside the member, a temperature fuse that is housed in the housing part and melts when a predetermined high temperature is detected, and the valve closes the spout when the temperature fuse has a certain volume A heat-sensitive operating part with a trigger mechanism that operates the valve so that the spout opens when the volume is reduced due to elution of the thermal fuse. The cooler head is characterized in that a plug plate for preventing deformation of the thermal fuse housing part is provided at or near the cylindrical opening end of the thermal fuse housing part. .

  In the sprinkler head according to the present invention, the temperature fuse housing portion is cylindrical and the plug plate is formed in a disk shape, or the plug plate is formed in a perforated disk shape or a ring shape. It is also a feature.

According to the sprinkler head of the present invention, by providing a plug plate for preventing deformation of the thermal fuse housing part at or near the cylindrical opening end of the thermal fuse housing part, a ceiling plate can be used due to an earthquake disaster or the like. Even when the collapsing member comes into contact with the sprinkler head and hits the cylindrical end of the thermal fuse housing, the opening can be prevented from being deformed.
As a result, it is possible to provide a high-quality sprinkler head that can be extinguished immediately even when a fire occurs due to an earthquake, as well as a normal fire.

Further, when the temperature fuse storage portion is cylindrical and the plug plate is formed in a disk shape, there is an advantage that the strength against deformation can be increased and the durability of the sprinkler head can be increased.

  Furthermore, in the case where the temperature fuse housing member is cylindrical and the plug plate is formed in a perforated disk shape or ring shape, the valve body and the like can be inspected and adjusted from the central hole portion, There is an advantage that workability such as assembly can be improved.

BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described below in detail with reference to the drawings.
FIG. 1 is a schematic view of a sprinkler head according to the present invention in use, and FIG. 2 is a longitudinal sectional view of the sprinkler head 1 according to the present invention. In FIG.
This sprinkler head 1 is attached to the end of the branch pipe 3 branched from the fire-extinguishing water distribution pipe 2 laid in the ceiling, and, as will be described later, the sprinkler head main body 4 has a spout 5 portion from the fire-extinguishing water distribution pipe 2. It is connected so that the pressure water of is supplied.

  The sprinkler head 1 includes a sprinkler head main body 4 formed in a substantially cylindrical shape having a connecting screw portion 6 and a hexagonal wrench engaging portion 7 provided on the outer periphery, and the sprinkler head main body 4 In a normal state, a valve (valve element) 8 that presses against the inner peripheral surface of the water discharge port 5 formed in the sprinkler head body 4 to prevent water from passing therethrough, and the valve 8 below the valve 8 so as to maintain the closed state. A heat-sensitive operation part 10 provided with a trigger mechanism 9 provided on the side, and a substantially cylindrical frame 11 attached to the lower side of the sprinkler head body 4 so as to cover the trigger mechanism 9 part of the heat-sensitive operation part 10; The frame 11 includes a water spray deflector 12 that is housed so as to be lowered and supported when the trigger mechanism 9 is activated due to the occurrence of a fire.

The heat-sensitive operating unit 10 is arranged so as to abut on a valve pin 14 having a tip (upper end in FIG. 2) screwed into a holding screw hole 13 provided at the center of the lower surface of the valve 8 and a lower surface of the valve pin 14. A support pin 15 provided, a disk-like slider 16 attached to the support pin 15 so as not to move upward, and a balancer plate 17 slidably attached to the support pin 15 facing the slider 16. The conical coil spring (opening biasing means) 18 biased in the direction of dropping them downward, that is, the direction of opening the water discharge port 5, the slider 16, the balancer plate 17 and the frame 11 facing each other. A locking member made up of a plurality of balls that holds against the stepped portion 19 formed on the inner peripheral portion of the lower end so that they do not fall off during normal times. 0, a ring-shaped temperature made of a molten metal placed on the flange portion 22 of the holding member 21 and a cylindrical holding member (thermal fuse storage portion) 21 with a flange attached to the lower end of the support pin 15 A fuse 23 and a heat sensitive member 24 supported by the support pin 15 via the temperature fuse 23 and slidably attached to the holding member 21 are provided.
Incidentally, the pressure water pressure from the fire-extinguishing water distribution pipe 2 supplied to the spout 5 also acts as an opening urging means for urging the valve 8 in the opening direction.

The trigger mechanism 9 is formed by the slider 16, the balancer plate 17, the conical coil spring 18, the step portion 19 formed at the inner peripheral portion of the lower end of the frame 11, and the locking member 20.
The valve 8 has a thick disk shape with an O-ring 25 attached to the periphery thereof, and is fitted into a wide-diameter step portion 26 provided in the water discharge port 5 of the sprinkler head body 4 so that the water discharge port. 5 is sealed watertight.
The heat sensitive member 24 is formed by integrally forming a disk-like heat sensitive member 27 and a cylindrical portion 28 by pressing or the like, and the cylindrical portion 28 of the heat sensitive member 27 located on the thermal fuse 23 is narrowed to a small diameter. The upper surface is in contact with the lower end of the balancer plate 17 through the heat insulating member 29.
The holding member 21 is formed with a female screw 30 at a portion narrowed to the small diameter at the upper portion, and this female screw 30 portion is screwed to the lower end of the support pin 15 and then integrally joined using an acrylic adhesive. It is.

As a result, the balancer plate 17 includes the heat insulating member 29, the cylindrical portion 28, the thermal fuse in a state where the locking member 20 and the stepped portion 19 formed on the inner peripheral portion of the lower end of the frame 11 are sandwiched between the slider 16. The locking member 20 that is fixed to the support pin 15 via the holding member 23 and the holding member 21 and pressed by the slider 16 cannot get over the step portion 19, whereby the heat-sensitive operation unit 10 is held in the frame 11. Therefore, the collar 22 is finally supported in a state in which it cannot be moved downward.
A plug plate 32 is attached to the cylindrical opening 31 at the center of the cylindrical portion 28 of the thermal member 24.

The plug plate 32 is formed in a donut-shaped disc having a hole 33 formed in the center, and the plug plate 32 is fitted into the cylindrical opening portion 31 by press fitting.
The hole 33 formed in the center of the plug plate 32 is used when an acrylic adhesive is applied after the female screw 30 portion of the holding member 21 is screwed to the lower end of the support pin 15 as described above. Can be convenient.
In FIG. 2, the plug plate 32 is fitted into the cylindrical opening portion 31 with a gap provided between the plug plate 32 and the lower surface of the flange portion 22 of the holding member 21. As shown, it can be fitted into the cylindrical opening portion 31 with no gap provided between the plug plate 32 and the lower surface of the flange portion 22 of the holding member 21.

The sprinkler head 1 of the present invention configured as described above is attached to the end of the branch pipe 3 branched from the fire-extinguishing water distribution pipe 2 laid in the ceiling as shown in FIG.
Then, when a fire occurs, the sprinkler head of the present invention performs a fire extinguishing operation in the same manner as a conventional sprinkler head. Therefore, the case where an earthquake disaster such as an earthquake occurs including this fire extinguishing operation will be described as an example.
When an earthquake occurs, the building will first shake greatly.
This shaking causes the ceiling structure to shift or collapse, and collides with the heat-sensitive member 27 or the cylindrical portion 28 of the heat-sensitive portion 24 and tries to deform the portion.
Thus, when the ceiling structure or the like collides with the heat-sensitive member 27 or the cylindrical portion 28 of the heat-sensitive portion 24, the plug portion 32 fitted to the cylindrical opening portion 31 of the cylindrical portion 28 prevents its deformation.

Next, gas is leaked due to the earthquake, and it is ignited by a spark generated by a short circuit of an electric wire hanging from the leaked gas or collision of metals, and a fire is generated.
Thus, when a fire occurs and the heat sensitive member 27 receives heat from the fire, this heat is transferred to the tubular portion 28 provided in the central portion of the heat sensitive member 27 and in the tubular portion 28. The stored temperature fuse 23 is heated.
At this time, the heat received by the heat sensitive member 27 is transmitted to the holding member 21 directly or via the thermal fuse 23 and is transmitted from the holding member 21 to the support pin 15. Since the heat conduction (heat radiation) is blocked by 29, the heat conduction is minimized.

As a result, the temperature fuse 23 immediately rises to the melting temperature and melts as shown in FIG.
The melted temperature fuse 23 leaks from the gap between the tubular portion 28 of the heat-sensitive member 24 and the flange portion 22 of the holding member 21 and drops from the central hole 33 of the plug plate 32 so that its volume gradually increases. Decrease.
As the volume decreases, the heat sensitive part 24 supported by the thermal fuse 23 gradually falls.

When such a thermal fuse 23 is melted, for example, if it is fitted to the cylindrical opening portion 31 with no gap provided between the plug plate 32 and the lower surface of the flange portion 22 of the holding member 21 shown in FIG. As the member 24 descends, a space is created below the flange portion 22, so that the melted temperature fuse 23 leaks into the generated space, and then, as described above, dripping is possible from the central hole 33 of the plug plate 32, and gradually. Since the volume is reduced, the descent of the heat sensitive member 24 is not hindered in this case as well.
As the heat sensitive member 24 descends, the balancer plate 17 provided on the upper side thereof loses its support and gradually moves downward.
As a result, the locking member 20 of the trigger mechanism 9 that has lost its support on the inner side receives the pressing force of the slider 16 biased by the conical coil spring 18 as shown in FIG. Get over the stepped 19.

When the locking member 20 gets over the step portion 19 provided on the inner periphery of the lower end of the frame 11, the heat-sensitive operating unit 10 that has been held in the frame 11 until now has the elastic force of the spring 5 and the spring 5 as shown in FIG. It is pushed downward from the frame 2 at a stretch by the pressure water pressure from the fire-extinguishing water distribution pipe 2 supplied to the water outlet 5.
When the heat-sensitive operation unit 10 is pushed out in this way, the valve 8 that has blocked the water discharge port 5 is pushed downward by the pressure water pressure in the fire extinguishing water distribution pipe. It is opened, and the pressure water in the fire extinguishing water distribution pipe is ejected from the spout 5 radiatingly downward and discharged.

During the water discharge, the valve 8 is caught by the lower end of the deflector 12 housed in the frame 2 and acts to pull out the deflector 12 downward.
The deflector 12 slides down in the frame 11 together with the valve 8, and the upper end of the deflector 12 is hooked on the step portion 19 of the frame 11, so that the deflector 12 is stopped in a state of being hung from the frame 11.
In this way, the pressure water flow ejected from the discharge port 5 vigorously collides with the upper surface of the valve 8 held by the deflector 12 suspended from the frame 11, so that the pressure water flow is scattered around. The water is discharged and the fire is extinguished.

  As described above, even when a ceiling structure or the like collides with the heat-sensitive member 27 or the tubular portion 28 of the heat-sensitive portion 24, the plug plate in which the tubular portion 28 is fitted into the tubular opening portion 31. Since the deformation is prevented by 32, even if a fire occurs, it can be extinguished immediately, and a large fire can be prevented. It goes without saying that this also works in the same way when a general fire occurs or when it is burned.

In the above embodiment, the plug plate 32 is formed in a donut-shaped disk having a hole 33 formed in the center, and the plug plate 32 is fitted into the cylindrical opening portion 31 by press fitting. However, as shown in FIG. 8, the plug plate 32 may be formed in a disk shape without a hole in the center.
In such a case, it is possible to prevent the temperature fuse 23 that has melted and leaked from dropping or scattering downward.

These are the schematic which shows the use condition of the sprinkler head of this invention. These are the longitudinal cross-sectional views of the sprinkler head of this invention. FIG. 3 is a half vertical sectional view of a plug plate and a thermal fuse portion of the sprinkler head of the present invention. These are the half longitudinal cross-sectional views explaining the action | operation of the sprinkler head of this invention. These are the half longitudinal cross-sectional views explaining the action | operation of the sprinkler head of this invention. These are the half longitudinal cross-sectional views explaining the action | operation of the sprinkler head of this invention. These are the half longitudinal cross-sectional views explaining the action | operation of the sprinkler head of this invention. These are the half longitudinal cross-sectional views which show the modification of the plug plate of the sprinkler head of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Sprinkler head 4 ... Sprinkler head main body 5 ... Water outlet 8 ... Valve body 9 ... Trigger mechanism 10 ... Heat-sensitive action part 18 ... Opening biasing means (conical coil spring) )
23 ... Temperature fuse 28 ... Tubular part 21 ... Temperature fuse storage part (holding member)
31 ... Cylindrical opening (opening end)
32 ... Plug plate 33 ... Hole

Claims (3)

A sprinkler head main body connected to the fire-extinguishing water distribution pipe, a valve for closing the water discharge port in the sprinkler head main body against the opening pressure of the water pressure or the opening urging means, and the discharge when a predetermined high temperature is detected A heat-sensitive operation part that operates the valve so as to open the water port, a tubular member that is fixed to the sprinkler head body and that opens downward, a valve body that can be moved up and down in the tubular member, and a storage part A temperature fuse that melts when a predetermined high temperature is detected, and when the temperature fuse is at a certain volume, the valve keeps the water outlet closed, and when the temperature fuse elutes and the volume decreases, the water outlet A sprinkler head that is provided with a trigger mechanism for operating a valve so that the valve opens so as to form a heat-sensitive operation part. Ku is sprinkler head is characterized in that a plug plate to prevent the deformation of the housing portion of the thermal fuse in the vicinity.   The sprinkler head according to claim 1, wherein the storage portion for the thermal fuse is cylindrical and the plug plate is formed in a disc shape. 2. The sprinkler head according to claim 1, wherein the thermal fuse housing portion is cylindrical, and the plug plate is formed in a perforated disk shape or a ring shape.

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