JP4302125B2 - Sprinkler head fitting - Google Patents

Description

  The present invention relates to a fire extinguisher and a sprinkler head fixture.

  The closed sprinkler head disperses the valve body that closes the water outlet, the heat-sensitive part that keeps the valve body closed at all times, and that is opened by heat in the event of a fire, and the fire-fighting water supplied from the water outlet And a watering part to be provided. This head is usually disposed in a hot air flow path near the lower surface of the ceiling so that the heat sensitive part can sense heat generated at the time of fire early.

However, when there is an obstacle such as a duct in the vicinity of the lower surface of the ceiling, if the head is disposed in the hot air flow passage, the obstacle becomes an obstacle during watering, and water cannot be sprayed as designed. Therefore, the head is installed below the obstacle to prevent the occurrence of watering obstacles, and a heat collecting plate is provided immediately above the head to improve heat collection (see Patent Document 1). .
JP-A-8-155050

  In the conventional example, since the head is positioned below the hot air flow path near the ceiling lower surface, when a fire occurs, the hot air flows upward from the head. Therefore, only the hot air flow of the fire directly under the head can be collected, and even if a heat collecting plate is attached, heat collection cannot be improved, so the operation of the head is greatly delayed, and effective fire extinguishing is It becomes difficult. In addition, since the heat collecting plate is exposed, it becomes unsightly and aesthetically undesirable.

  In view of the above circumstances, an object of the present invention is to enable quick and effective fire extinguishing.

The present invention has a pipe connection port connected to a fire extinguishing pipe at one end, an attachment port at the other end, a head connection port protruding from the center between the both ends, and a T-shaped cylindrical shape In the sprinkler head mounting tool comprising the main body, the sprinkler head mounting tool is provided in the main body, and is composed of a valve portion and a valve rod portion on the back side of the valve portion. The valve body is supported in a normally closed state, and has a heat-sensitive portion that is opened by heat in the event of a fire, and a through passage that is provided on the other end side of the main body and into which the rear end of the valve stem portion of the valve body is inserted. , and a guide having a predetermined thickness, said guide a heat sensitive part, by screwing the mounting hole, is fixed to the body, at the time of valve opening, the distal end side is of the valve stem portion, said guide The valve body that is held in the through-passage and is pressed by the fire-extinguishing water when the valve is opened is regulated by the guide. Is slid is opened while, it is characterized in that the flow of extinguishing water to the head connecting opening.

  Since the present invention is configured as described above, the heat sensitive part and the sprinkler head can be separated from each other and disposed at an arbitrary position. Therefore, the heat sensitive part can be arranged at a position optimal for heat sensing, and the sprinkler head can be arranged at an appropriate position where no sprinkling trouble occurs. Therefore, in the event of a fire, the heat sensitive part quickly opens the valve body and starts water discharge, and fire extinguishing water sprayed from the sprinkler head is sprinkled into the designed water spray area. Therefore, fire extinguishing can be performed quickly and effectively compared to the conventional example.

  Connect the closed sprinkler head to the fire extinguishing pipe. This head has a watering part that disperses the fire extinguishing agent from the water outlet, a valve body that is normally closed to prevent the supply of the fire extinguishing agent to the watering part, and that the valve body is supported in a normally closed state. And a heat sensitive part that is opened by heat when generated.

  The valve body and the heat sensitive part that supports the valve body are provided separately from the water outlet and separated from the upstream side. Since the heat sensitive part and the water outlet are separated and separated from each other in this way, they can be disposed at free positions independently of each other. Therefore, the heat-sensitive part can be disposed in a place optimal for heat sensing, for example, in a hot air passage, and the water sprinkling part can be disposed in a place optimal for fire extinguishing.

  When connecting a sprinkler head to a fire extinguishing pipe, a sprinkler head mounting tool can be used.

  This head fixture has a pipe connection port at one end, a mounting port for the heat sensitive part at the other end, and a cylindrical main body formed with a head connection port between both ends, and is inserted into the other end side. A guide that guides the movement of the valve body, a valve body that is provided in the main body and that cuts off between the two connection ports, and is provided in the heat-sensitive part mounting port, and supports the valve body in a normally closed state. And a heat-sensitive part that is opened by heat when a fire occurs.

  The sprinkler head is connected to the head connection port of the head fixture via a head connection tube. When the head connection port extends to the design arrangement position of the sprinkler head, the head connection tube may be omitted. it can.

  An open sprinkler head is used as the sprinkler head connected to the head connection port, but a closed sprinkler head may be used.

  As the valve body, a piston type valve body including a valve portion and a valve stem portion is used, but the valve body is not necessarily limited to this type of valve body.

  Although a glass bulb is used as a support member for the heat sensitive portion, the glass bulb is not necessarily limited thereto, and for example, a soluble metal or a bimetal may be used.

  Embodiments of the present invention will be described with reference to the accompanying drawings. A hot air passage 22 is located near the lower surface 20 a of the ceiling 20. The hot air flow passage 22 is a passage through which a hot air flow generated at the time of a fire passes, and is usually positioned about 10 cm below the lower surface 20a of the ceiling.

  A fire extinguishing pipe K is disposed in the hot air passage 22, and a sprinkler head F is connected to the fire extinguishing pipe K through a sprinkler head mounting tool 1 and a head connecting pipe E.

  The sprinkler head mounting tool 1 includes a cylindrical main body H. A pipe connection port A connected to the fire extinguishing pipe K is formed at the front end of the main body H, a mounting port J for the heat sensitive part D is formed at the rear end, and a head connection port B projects at the center of both ends. The main body H has a T-shape as a whole.

  A valve body C is disposed in the main body H. The valve body C is a piston type valve body including a valve portion 3a, a valve rod portion 3b on the back surface side of the valve portion 3a, and a protrusion portion 3c on the front surface side of the valve portion 3a. The surface of the valve portion 3a is formed in a truncated cone shape, and the back surface thereof is formed in a flat shape. Further, the outer diameter of the valve 3a is formed substantially equal to the inner diameter of the main body H.

  The protruding portion 3 c is provided with a disc spring 8 having a slightly smaller diameter than the valve portion 3 a and a retaining ring 10 having a smaller diameter than the disc spring 8. The disc spring 8 is pressed against the valve seat 25 of the main body H and blocks communication between the connection ports A and B. The retaining ring 10 prevents the disc spring 8 from falling off, but is not necessarily provided. Further, by applying Teflon (registered trademark) coating to the disc spring 8, the sealing performance can be enhanced.

  Although the valve stem portion 3b is formed in a conical shape, the rear end portion side is gradually narrowed. The rear end of the valve stem 3b is inserted into the through passage 26 of the guide 4 of the valve body, and the rear end surface 3f is formed in a hemispherical shape so as to come into surface contact with the ball 9. If the rear end surface 3f of the valve stem portion 3b is formed in a hemispherical shape, the ball 9 can be easily positioned. The length of the valve stem portion 3b is appropriately selected as necessary. For example, the length is selected such that the rear end of the valve stem portion 3b contacts the set screw 6 when the valve is opened.

  More specifically, the length of the valve stem portion 3b is such that the rear surface of the valve portion 3a abuts against the valve seat surface of the guide valve 4 rather than the rear end abutting against the set screw 6 when the valve is opened. Thus, when the valve is opened and discharged, the valve body C does not impair the water discharge.

  Depending on the length of the main body H and the valve body C, the ball 9 may be unnecessary. The ball 9 serves as a spacer, thereby increasing the stroke of the valve stem portion 3b.

  A bottomed cylindrical glass bulb receiver 5 is inserted into the through passage 26 of the guide 4 of the valve body C. The front end side of the glass bulb receiver 5 is formed in a hemispherical shape so as to come into surface contact with the ball 9, and an insertion hole 27 for the glass bulb 7 is provided in the bottom portion 5a.

  As a heat-sensitive support member of the heat-sensitive part D, a glass bulb 7 is used. The glass bulb 7 is composed of a glass tube and alcohol enclosed in the glass tube. The front end of the glass bulb 7 is inserted into the insertion hole 27 of the glass bulb receiver 5, and the rear end thereof is pressed by a set screw 6 screwed onto the frame 2. In addition, by using the glass bulb 7 for the heat sensitive part D, the corrosion resistance is improved.

  The frame 2 includes three support portions 2a that are screwed into the outlet J at the other end of the main body H and that are disposed at intervals of 120 ° in the circumferential direction. In this way, the heat sensitive part having the shape of a so-called frame-type sprinkler head is arranged at the outlet J because the opening between the support parts 2a is large, and the ball 9 and the glass bulb receiver 5 fall from the through passage 26 in the event of a fire. This is because it is easy to do.

  The head connection port B is formed at the center of both ends of the main body H, but the position thereof can be selected as appropriate. A head coupling pipe E is connected to the head coupling port B. The length of the pipe E is such that the tip e of the reducer R provided on the head coupling pipe E is at the design arrangement position of the sprinkler head F. It is decided. This design arrangement position is a position where watering failure due to the duct G or the like does not occur and water can be efficiently sprayed.

  An open sprinkler head F is provided at the tip of the reducer R. As this head F, for example, a head that has been installed as a closed type sprinkler head in the past and opened in a fire and brought into a state similar to an open type sprinkler head is used, and a so-called used closed type sprinkler head is opened. It can be reused as a mold sprinkler head. This head F is provided with a sprinkler 28 for dispersing a fire extinguishing agent. This watering part 28 is comprised from the deflector 29 and the cone 30 provided in the upper surface center of this deflector. Note that an open sprinkler head may be provided from the beginning instead of the used sprinkler head.

  Next, the operation of this embodiment will be described. At all times, that is, at the time of fire monitoring, the valve body C is pressed by the glass valve 7 of the heat sensitive part D and maintains the valve closed state, so that the fire water W in the fire extinguishing pipe K does not flow into the sprinkler head fixture 1.

  When a fire occurs, the hot air current passes through the hot air flow passage 22 near the ceiling lower surface 20a and heats the glass bulb 7. Then, the alcohol in the glass bulb 7 expands and breaks the glass tube, so that the valve body C is pressed by the fire extinguishing water W and slides in the direction of the arrow A1 while being regulated by the guide 4, and the ball 9 And the glass bulb receiver 5 is pushed by the valve body C and falls from the through passage 26.

  At this time, since the ball 9 has a spherical shape, the ball 9 smoothly moves and falls in the through passage 26, and the back surface of the valve portion 3a of the valve body C comes into contact with the valve seat surface 4a of the guide 4 to The end comes into contact with the set screw 6 and is in the state shown in FIG.

  The fire-extinguishing water W flowing in from the pipe connection port A flows down in the direction of the head connection port B by the valve body C, flows down, passes through the head connection tube E, and collides with the cone 30 and the deflector 29 of the open sprinkler head F. While being dispersed, water is sprayed to a fire extinguishing area (not shown). At this time, since water does not flow to the attachment port J side by the valve body C, the fire-extinguishing water W can be sufficiently supplied to the sprinkler 28. Moreover, since the surface of the valve part 3a is formed in the truncated cone shape, the flow of the fire-extinguishing water W can be smoothly changed downward.

  At this time, since the open-type sprinkler head F is in the design arrangement position below the duct G, the watering trouble does not occur.

  The embodiment of the present invention is not limited to the above, and may be configured as follows, for example.

  (1) Instead of using the glass bulb 7 as the heat-sensitive support member of the heat-sensitive part D, a soluble metal, a bimetal or the like is used.

  (2) Instead of using the head connection pipe E, the head connection port B is extended so that the tip of the head connection port B becomes the design arrangement position of the sprinkler head F.

  (3) Instead of using the disc spring 8 and retaining ring 10 of the valve body C, the surface of the valve portion 3a of the valve body can be directly pressed against the valve seat 25.

  (4) Instead of using the open sprinkler head F, a closed sprinkler head is used. In this case, since the water is not discharged unless both the valve element C of the sprinkler head mounting tool 1 and the valve of the closed sprinkler head (not shown) are opened, for example, an external force is applied to the closed sprinkler head by mistake, and the head opens. Even so, the valve body C is not opened. Therefore, it is possible to prevent the occurrence of a water loss accident due to malfunction.

(5) Instead of attaching the heat-sensitive part having the shape of a frame-type sprinkler head to the attachment port J of the heat-sensitive part D, a heat-sensitive part having the shape of a flash-type sprinkler head may be attached.

  (6) The attachment state of the sprinkler head fixture 1 is not limited. For example, the state shown in FIG. 1 is rotated 90 degrees to the left, and only the glass bulb 7 is provided near the ceiling. May be moved upward rather than sideways. If it installs in this way, since it will become easy to receive the hot air flow from which direction a glass bulb, sensitivity will increase.

Since the present invention is configured as described above, the heat sensitive part and the sprinkler head can be separated from each other and disposed at an arbitrary position. Therefore, the heat sensitive part can be arranged at a position optimal for heat sensing, and the sprinkler head can be arranged at an appropriate position where no sprinkling trouble occurs. Therefore, in the event of a fire, the heat sensitive part quickly opens the valve body and starts water discharge, and the fire-extinguishing water sprayed from the sprinkler head is sprinkled into the water spray area as designed. Therefore, fire extinguishing can be performed quickly and effectively compared to the conventional example.

It is a longitudinal cross-sectional view which shows the Example of this invention, and is a figure which shows a valve closing state. It is a figure which shows the other state of FIG. 1, and is a longitudinal cross-sectional view which shows a valve opening state. It is a front view which shows the state which attached the sprinkler head to the fire extinguishing piping via the sprinkler head fixture. It is a front view which shows the arrangement | positioning state of a fire extinguisher.

Explanation of symbols

1 Sprinkler head fitting, 28 Water sprinkler, A Pipe connection port,
B head connection port, C valve body, D heat sensitive part, E head connection pipe,
F Open type sprinkler head, tt

Claims (2)

A sprinkler having a pipe connection port connected to a fire extinguishing pipe at one end, a mounting port at the other end, and a head connection port projecting at the center between the both ends, and comprising a T-shaped cylindrical main body In the head fixture,
A valve body provided in the main body, configured by a valve portion and a valve rod portion on the back side of the valve portion, and blocking between the two connection ports;
A heat-sensitive part provided at the attachment port, supporting the valve body in a normally closed state, and opening the valve by heat in the event of a fire; and
A guide having a predetermined thickness provided on the other end side of the main body, and having a through-passage through which a rear end of the valve stem portion of the valve body is inserted,
The guide is a heat-sensitive portion, by screwing the mounting hole, is fixed to the body, at the time of valve opening, the distal end side is of the valve stem portion, which is held in the through-passage of the guide ,
A sprinkler head mounting tool, wherein when the valve is opened, the valve body pressed by the fire-extinguishing water is slid and opened while being regulated by the guide, and the fire-extinguishing water flows through the head connection port.   2. The sprinkler head mounting tool according to claim 1, wherein the guide is fixed in the main body by screwing a heat-sensitive part having a flash sprinkler head shape into the mounting opening.