JP2012179308A - Sprinkler head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sprinkler head in which the exposed portion into a room at a non-actuation time is made few as far as possible, thereby the indoor fine sight is not damaged, and the outer diameter is small.SOLUTION: The sprinkler head includes: a first rod L1 movably supporting a deflector 4; a relay ring 12A supporting the first rod L1; a second rod L2 movably supporting the relay ring 12A; and a lock ring 12B supporting the second rod L2. The rods L1 and L2 are arranged in parallel shifting the axes thereof. When a heat sensitive operation part 5 performs resolution/falling at the time of extinction actuation, the lock ring 12B moves the inside of a frame 2 downward to lock with a lock flange 11, and supports the relay ring 12A to be hung on the external of the frame 2 through the second rod L2. The relay ring 12A supports the deflector 4 to be hung further downward through the first rod L1.

Description

  The present invention relates to a fire extinguishing sprinkler head.

  The sprinkler head is installed on a ceiling or a wall surface and operates in the event of a fire to spray fire extinguishing liquid such as water to extinguish the fire. As an example of a sprinkler head, there is one in which a deflector protrudes indoors from a ceiling and sprays water during operation (see, for example, Patent Document 1).

  The sprinkler head described in Patent Document 1 shown in FIG. 8 has a cylindrical body 56 provided inside a cylindrical frame 53. The cylindrical body 56 includes three cylindrical pieces 56a, 56b, and 56c, and is configured to be telescopically extendable. The innermost cylindrical piece 56c is provided with a diffusion plate 57 and a valve body 58. The valve body 58 blocks the water passage 52 of the head main body 51 at all times (during non-operation). Is in a contracted state.

  At the time of operation, the cylindrical body 56 is in an extended state, and the water discharged from the water passage 52 is scattered in all directions by the diffusion plate 57 to perform a fire extinguishing action.

Shokai 56-56355

  The sprinkler head has a feature in which the protruding portion into the room when not in operation is made as short as possible so as not to impair the aesthetics of the room, and when operating, the sprinkler head protrudes greatly into the room and can sufficiently distribute and discharge water in all directions. . However, since the cylindrical body 56 has a triple nested structure, the outer diameter of the sprinkler head becomes large. Then, the diameter of the hole of the ceiling board which exposes the sprinkler head installed in the back of the ceiling to the room is increased, and the outer diameter of the sealing plate which covers the hole is also increased. As a result, the sprinkler head and the sealing plate are conspicuous on the ceiling surface, which may impair the aesthetics of the room.

  Therefore, the present invention aims to provide a sprinkler head that does not impair the aesthetics of the room by minimizing the exposed part of the room during operation without increasing the outer diameter.

In order to achieve the above object, the present invention provides the following sprinkler head.
(1) That is, the present invention includes a cylindrical main body having one end connected to a water supply pipe and having a water guide hole therein, a deflector provided on the other end side of the main body, and spraying fire extinguishing liquid discharged from the water guide hole. In the sprinkler head comprising: a first rod that supports the deflector so as to be movable in the discharge direction of the fire extinguishing liquid from the water guide hole; a relay member that supports the first rod; and a relay member that is movable in the discharge direction. The first rod and the second rod are arranged with their axes shifted from each other, and the deflector and the relay member are accommodated inside the main body when not in operation, In the multi-stage extension in which the relay member moves in the discharge direction through the second rod and the deflector moves in the discharge direction through the first rod, the deflector moves outside the main body. Characterized in that it out.

In the sprinkler head of the present invention, the first rod and the second rod described above are arranged with their axes shifted from each other, and the deflector and the relay member are accommodated inside the main body when not in operation, , The relay member moves in the discharge direction via the second rod, and the deflector protrudes outside the main body by multi-stage extension in which the deflector moves in the discharge direction via the first rod.
In other words, unlike the conventional sprinkler head in which the deflector is largely projected by a plurality of nested tube pieces, the deflector is attached to the main body by multi-stage extension by the first rod and the second rod arranged on the relay member with the axes shifted from each other. Project outside. For this reason, even if it does not depend on the dimension increase to the radial direction of a sprinkler head, the protrusion length of a deflector can be enlarged. Therefore, while not operating, the exposed portion of the ceiling surface in the room is reduced so as not to impair the indoor aesthetics, and during operation, the deflector can be protruded greatly from the ceiling surface to the indoor side to sufficiently perform the distributed water discharge. .
Moreover, since both a relay member and a deflector can be comprised as flat form, even if they are piled up, it is not bulky. Therefore, the main body can be accommodated without increasing the size, and the entire sprinkler head can be configured compactly.

  Such a sprinkler head according to the present invention has a protrusion length of the deflector by adding one or more sets of another relay member and another first rod between the existing first rod and the deflector. That is, the number of expansion stages can be increased. The first rods for increasing the number of stages are arranged in parallel with the existing first rod and second rod being offset from each other.

(2) The sprinkler head can be configured by arranging the first rod and the second rod at one circumferential position of the relay member.
According to this, even if it does not depend on the dimension increase to the radial direction of a sprinkler head, the protrusion length of a deflector can be enlarged. Further, as described above, even when the number of extension stages including the relay member and the first rod is increased, a relay member having the same outer diameter can be used, so that there is no increase in the dimension in the radial direction.

(3) The sprinkler head includes a locking member that supports the relay member via the second rod, and the locking member is accommodated on the water guide hole side inside the main body when not in operation. In operation, the deflector, the first rod, the relay member, and the second rod can be configured to protrude outside the main body by moving inside the main body in the discharge direction.
According to this, the locking member, the relay member, and the deflector can be accommodated close to the water guide hole side of the main body when not in operation, so that the total length of the sprinkler head can be configured compactly. Further, during operation, the locking member moves inside the main body, so that the movement distance of the locking member can be used as the protruding length of the deflector, the first rod, the relay member, and the second rod from the main body. Therefore, the deflector can be protruded greatly without lengthening the first rod or the second rod to lengthen the entire sprinkler head.

(4) The main body of the sprinkler head has one end connected to the water supply pipe, and a cylindrical main body having the water guide hole therein, and one end connected to the main body, and moving to the other end during operation. It can comprise as a thing provided with the cylindrical frame which formed the inward locking flange which a member latches.
In the sprinkler head of the present invention, when not operating, the main body accommodates a deflector, a relay member, etc.When the protrusion length and the number of extension stages of the deflector are increased, only the frame needs to be replaced accordingly. The body can be used as it is.

(5) One end of the first rod of the sprinkler head is inserted into a hole provided in the deflector, the other end is fixed to the relay member, and the second rod is moved to a hole provided on the relay member. The other end side is fixed to the locking member, and the relay member and the deflector can be supported by the locking member so that they can be extended in multiple stages via the first rod and the second rod. .
According to this, since the protrusion of the 1st rod and the 2nd rod to the water guide hole side inside a main part can be suppressed, and a locking member, a relay member, and a deflector can be accommodated in a water guide hole side position, a sprinkler The total length of the head can be configured compactly.

(6) The deflector of the sprinkler head can be configured to be provided with a lacking portion for insertion through which the second rod can be inserted through the plate thickness.
According to this, since the 2nd rod does not interfere with a deflector, a locking member, a relay member, and a deflector can be piled up inside a main part, and can be stored compactly.

(7) The first rod of the sprinkler head has one end fixed to the deflector, the other end inserted through a hole provided in the relay member, and the second rod has one end fixed to the relay member. The other end is inserted into a hole provided in the locking member so as to be movable, and the relay member and the deflector are supported by the locking member so as to be capable of extending in multiple stages via the first rod and the second rod. Can be configured.
Accordingly, the first rod and the second rod do not protrude below the deflector. For this reason, the heat-sensitive operation part normally provided in the sprinkler head can be arranged without being restricted by those rods.

(8) The locking member of the sprinkler head can be configured to be provided with a lacking part for insertion through which the first rod can be inserted through the plate thickness.
According to this, since the 1st rod does not interfere with a locking member, a locking member, a relay member, and a deflector can be piled up inside a main part, and can be stored compactly.

  According to the sprinkler head of the present invention, the multi-stage extension structure including the first rod, the relay member, and the second rod can be used so as not to impair the indoor aesthetics by reducing the exposed portion to the room when not in operation. In addition, the deflector can be protruded greatly indoors without enlarging the outer diameter of the sprinkler head, and the dispersed water can be sufficiently discharged during operation.

1 is a cross-sectional view of a sprinkler head according to a first embodiment of the present invention. The disassembled perspective view of the sprinkler head of FIG. The perspective view of the part containing the deflector of FIG. Sectional drawing which shows the operating state of the sprinkler head of FIG. Explanatory drawing which shows the positional relationship of the locking ring of the sprinkler head of FIG. 1, a relay ring, a valve body, a 1st rod, a 2nd rod, and a guide post. Sectional drawing of the sprinkler head by 2nd Embodiment. The perspective view of the part containing the deflector of FIG. Sectional drawing of the sprinkler head by a prior art example.

First Embodiment [FIGS. 1 to 5]
Hereinafter, the sprinkler head of 1st Embodiment is demonstrated with reference to FIGS.

Structure of Sprinkler Head : The sprinkler head according to the first embodiment includes a main body 1, a frame 2, a valve body 3, a deflector 4, a heat sensitive operation unit 5, a heat collector 6, and the like. Of these, the main body 1 and the frame 2 constitute the “main body” of the sprinkler head of the present invention.

  The main body 1 has a water introduction hole 7 in the center, and a lower end thereof serves as a valve seat 8. A male screw 9 connected to the water supply pipe is screwed on the upper outer periphery of the main body 1, and a threaded portion for connecting the frame 2 is formed on the inner peripheral surface of the flange 10 formed at the lower end.

  The frame 2 has a cylindrical shape, and a locking flange 11 protrudes inwardly at the lower end, and the upper end is connected to the screwing portion formed on the inner peripheral surface of the flange 10 of the main body 1 described above. The In this manner, the frame 2 is screwed and connected to the main body 1 so that the first rod L1 and the second rod L2 are lengthened to increase the protruding length of the deflector 4, or the number of extension stages of the deflector 4 is increased. When increasing, the specification can be changed by exchanging only the frame 2 whose length is changed.

  The valve body 3 closes the valve seat 8 of the main body 1. The valve body 3 is provided integrally with a later-described deflector 4.

  The deflector 4 is formed in a flat plate shape, the valve body 3 is installed at the center, and a large number of blades are formed on the outer periphery by concave notches. The fire extinguishing liquid (water) discharged from the water guide holes 7 of the main body 1 is scattered in all directions by these blades.

On the flat deflector 4, a relay ring 12A as a "relay member" and a locking ring 12B as a "locking member" are installed.
The relay ring 12 </ b> A has the same outer diameter as the deflector 4, and can pass through the locking flange 11 of the frame 2.
The locking ring 12B is larger than the outer diameter of the connection ring 12A, larger than the hole diameter (inner diameter) of the locking flange 11 of the frame 2, and smaller than the inner diameter of the frame 2. Therefore, the locking ring 12B is locked to the locking flange 11 of the frame 2 during operation and is not exposed to the outside from the lower end of the frame 2.

  The deflector 4 and the relay ring 12A are connected by the first rod L1, and the relay ring 12A and the locking ring 12B are connected by the second rod L2. The deflector 4 is supported by the first rod L1 so as to be movable in the water discharge direction of the fire extinguishing liquid from the water guide hole 7.

  The relay ring 12A and the deflector 4 have a hole H through which the first rod L1 can be inserted. A flange portion T is formed at the end of the first rod L1 on the deflector 4 side, and the flange portion T is engaged with the deflector 4 and is prevented from being removed. The first rod L1 is inserted through the hole H on the deflector 4 side, and is fixedly connected to the hole H with the tip inserted into the hole H on the relay ring 12A side, and the relay ring 12A supports the first rod L1. The deflector 4 is movable along the first rod L1.

  Similarly, a hole H through which the second rod L2 can be inserted is formed in the relay ring 12A and the locking ring 12B. A flange portion T is formed at the end of the second rod L2 on the relay ring 12A side, and the flange portion T can lock the relay ring 12A. The second rod L2 is inserted through the hole H on the relay ring 12A side, and is fixedly connected with the tip inserted through the hole H on the locking ring 12B side. The relay ring 12A is supported by the second rod L2 so as to be movable in the water discharge direction.

The hole H drilled in the relay ring 12A and the locking ring 12B is drilled on the circumference of a circle C (shown by a broken line in FIG. 3) that is concentric with the centers of the relay ring 12A and the locking ring 12B and has the same radius. Has been. Further, the hole H to which the first rod L1 is connected and the hole H to which the second rod L2 are connected are installed on the circumference of the circle C at different positions (see FIGS. 3 to 5). That is, the first rod L1 and the second rod L2 are arranged at one circumferential position of the relay ring 12A and are offset from each other.
Accordingly, the first rod L1 and the second rod L2 do not interfere with each other without increasing the size in the radial direction as in the conventional sprinkler head, and the length of protrusion of the deflector 4 during operation is increased. be able to. Although not shown in the drawings, when the relay ring 12A and the first rod L1 are additionally installed to increase the number of extension stages of the deflector 4, the circles C of the existing relay ring 12A and the additional relay ring 12A are each circle C. Additional installation is possible by drilling the hole H of the additional first rod L1 while shifting it from the existing first rod L1 and second rod L2 on the circumference.

  At all times, the deflector 4, the relay ring 12A, and the locking ring 12B are accommodated inside the frame 2 (FIG. 1). At this time, the flanges T of the first rod L1 and the second rod L2 pass through the vicinity of the side surface of the guide post 13 placed on the heat-sensitive operation unit 5 (see FIG. 5), and are externally connected from the lower end of the frame 2 to the outside. The cover 25 is located in the vicinity of the side surface of the heat-sensitive operating portion 5 in the cover 25. The deflector 4 is formed with a concave cutout K that penetrates the plate thickness and serves as an “insertion missing portion” through which the second rod L2 can pass. For this reason, the deflector 4, the relay ring 12 </ b> A, and the locking ring 12 </ b> B can be stacked in a compact manner in the frame 2.

  A spring S is installed on the locking ring 12B of the frame 2, and always biases the locking ring 12B downward. A heat-sensitive operation unit 5 is installed at the lower part of the frame 2 and holds the valve element 3 via a guide post 13.

  Here, the thermal operation part 5 will be described in detail. The thermal operation unit 5 includes levers 14 and 14, a support plate 15, a balance 16, a set screw 17, a cylinder 18, and a plunger 23. The pair of levers 14, 14 whose upper portions are bent outward are engaged with the locking flanges 11 of the frame 2 at the lower ends of the bent portions. A support plate 15 is engaged with the levers 14 and 14, and a balance 16 is engaged with the levers 14 and 14.

  A set screw 17 is screwed onto the support plate 15, and a cylinder 18 is engaged with the balance 16. A flange 19 formed on the upper part of the cylinder 18 is engaged with a hole formed in the center of the balance 16. A male screw 20 is provided on the bottom surface of the cylinder 18 downward. The male screw 20 is screwed with a female screw 21 provided in the center of the heat collector 6.

  The cylinder 18 is filled with a low melting point alloy 22. The low melting point alloy 22 is selected from various temperatures depending on the place where the sprinkler head is attached. For example, a general office or living room with a melting point of 72 ° C is used, 96 ° C is used where a fire is used like a kitchen, and 139 ° C is used where the surroundings are hot like a sauna. A low melting point alloy having a melting point of 183 ° C. is used.

  A plunger 23 is placed on the low melting point alloy 22, and the plunger 23 is fitted in the cylinder 18. An inverted conical groove is formed on the upper portion of the plunger 23, and the lower end portion of the set screw 17 is placed in the groove.

  The cover 25 is bowl-shaped and has a hole in the center. The cover 25 covers and conceals the heat-sensitive operating unit 5 and protects it from dust and dirt.

  The heat collector 6 has a thin disk shape, and is formed of a material such as copper, a copper alloy, or aluminum having a good heat conduction performance. A cylindrical portion 24 is provided at the center of the heat collector 6, and a female screw 21 is formed inside the cylindrical portion 24. The female screw 21 is screwed with the male screw 20 of the cylinder 18 described above.

Operation of Sprinkler Head : Next, the operation of the sprinkler head will be described.

  When a fire occurs, the heat of the fire reaches the ceiling as an updraft, and the sprinkler head installed on the ceiling is heated. In the sprinkler head, the heat collector 6 is installed in the lower part near the fire source, and the heat absorbed by the heat collector 6 can be transmitted to the cylinder 18.

  The heat transmitted to the cylinder 18 is accumulated in the cylinder 18 and quickly melts the low melting point alloy 22 filled in the cylinder 18.

  In the sprinkler head, a force that presses the valve body 3 is applied to the plunger 23 via the guide post 13 via the pair of levers 14 and 14, the support plate 15, and the set screw 17 that constitute the heat-sensitive operation unit 5. Therefore, when the low melting point alloy 22 pressed by the plunger 23 is melted, the plunger 23 is immersed in the cylinder 18. Then, the pair of levers 14, 14 that were locked by the balance 16 is unlocked, and the lower portions of the levers are rotated outward to engage the locking flange 11 of the frame 2. The bent end portions 14 and 14 are disengaged, the heat-sensitive operation unit 5 is disassembled, and all the components are dropped downward.

  The guide post 13 held at the bent top of the lever 14 is dropped along with the decomposition and dropping of the heat-sensitive operation unit 5, and the valve body 3 integrated with the deflector 4 and the relay ring 12A connected to the deflector 4 are engaged. The ring 12B also falls. The locking ring 12B is urged downward by the spring force of the spring S. The deflector 4 is suspended from the locking ring 12B via the relay ring 12A. Since the locking ring 12B is locked to the locking flange 11 of the frame 2, the locking ring 12B is fixed to the frame 2. When the inside moves in the direction of water discharge from the main body 1 side toward the locking flange 11 and is locked to the locking flange 11, the relay ring 12A is located below the locking ring 12B via the second rod L2. The deflector 4 is suspended below the relay ring 12A via the first rod L1. That is, the deflector 4 protrudes greatly below the frame 2 by multi-stage extension in which the relay ring 12A moves in the water discharge direction through the second rod L2 and the deflector 4 moves in the water discharge direction through the first rod L1 ( FIG. 4).

  Since the valve body 3 falls and separates from the valve seat 8, water sent from the pipe is ejected from the water guide hole 7. The jetted water hits the deflector 4 that stops halfway and is sprayed in all directions to extinguish the fire.

  As described above, the sprinkler head according to the first embodiment is not a telescopic structure that causes the deflector to largely protrude by arranging a plurality of cylindrical pieces having different outer diameters in a nested manner, unlike the conventional sprinkler head, but the relay ring 12A. The deflector 4 is greatly protruded by multistage extension by the first rod L1 and the second rod L2 which are arranged with their axes shifted from each other. For this reason, even if it does not depend on the dimension increase to the radial direction of a sprinkler head, the protrusion length of the deflector 4 can be enlarged.

  Therefore, while not operating, the exposed portion from the ceiling surface W to the room is reduced so as not to impair the indoor aesthetics. However, during operation, the deflector 4 is protruded greatly from the ceiling surface to the indoor side to sufficiently distribute water. it can.

  Further, in order to increase the protruding length of the deflector 4, the locking ring 12 </ b> B moves inside the frame 2 until it locks with the locking flange 11 during operation, so that the moving distance of the deflector 4 from the frame 2 is increased. It can be used as the protruding length. Therefore, the deflector 4 can be protruded greatly without lengthening the first rod L1 and the second rod L2 to lengthen the entire sprinkler head.

  The deflector 4, the relay ring 12A, and the locking ring 12B are all flat. For this reason, when not operating, they can be stacked and accommodated compactly in the frame 2, and as a result, the sprinkler head itself can also be made compact.

Second Embodiment [FIGS. 6 and 7]
Next, the sprinkler head of the second embodiment will be described with reference to FIGS.

  In the second embodiment, parts having the same configurations as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Further, the disassembly of the heat-sensitive operation unit 5 and the drop of the guide post 13 during operation are the same as in the first embodiment. The difference from the first embodiment is that the first rod L1 and the second rod L2 extend toward the flange 10 of the main body 1 when not operating.

  More specifically, as shown in FIG. 6, the first rod L <b> 1 and the second rod L <b> 2 of the present embodiment have a flange portion T formed at the upper end. The lower end side of the first rod L1 is fixed to the deflector, the upper end side of the first rod L1 is inserted into a hole H provided in the relay ring 12A so as to be movable, and the lower end side of the second rod L2 is fixed to the relay member 12A. The relay ring 12A and the deflector 4 can be extended to the locking ring 12B via the first rod L1 and the second rod L2 in multiple stages through the hole H provided in the locking ring 12B. Supported. Accordingly, the first rod L1 and the second rod L2 are configured to extend toward the flange 10 of the main body 1 when not in operation.

  With the above configuration, in the first embodiment, the first rod L1 and the second rod L2 had to be arranged at positions that do not interfere with the thermal operation unit 5, but in the second embodiment, The first rod L1 and the second rod L2 can be arranged at arbitrary positions without being restricted.

  In the present embodiment, the locking ring 12B is provided with a notch K as an “insertion missing portion” that allows the first rod L1 to pass through the plate thickness. Accordingly, it is possible to prevent interference between the locking ring 12B and the second rod L2 in a state where the deflector 4, the relay ring 12A, and the locking ring 12B are overlapped.

In the first and second embodiments above, the endless and annular relay ring 12A and the locking ring 12B are illustrated as “relay members” in the above-described first and second embodiments. You may do it.

1 Body body
2 frame (body)
3 Disc
4 Deflector
5 Thermal operation part
6 Heat collector
7 Water transfer holes
11 Locking flange 12A Relay ring (relay member)
12B Locking ring (locking member)
C Circumference where first and second rods are installed
H hole
K notch (missing part for insertion)
L1 first rod
L2 second rod
T Isobe
W Ceiling

Claims (8)

A cylindrical body having one end connected to a water supply pipe and a water introduction hole inside,
In the sprinkler head that is provided on the other end side of the main body and includes a deflector that scatters the fire-extinguishing liquid discharged from the water conduction hole
A first rod that supports the deflector so as to be movable in the discharge direction of the extinguishing liquid from the water guide hole;
A relay member that supports the first rod;
A second rod that supports the relay member so as to be movable in the discharge direction,
The first rod and the second rod are arranged with their axes shifted from each other,
The deflector and the relay member are housed inside the main body when not operating, and when operating, the relay member moves in the discharge direction via the second rod, and the deflector releases the discharge via the first rod. A sprinkler head characterized in that the deflector protrudes outside the main body by multi-stage extension moving in the direction. The sprinkler head according to claim 1, wherein the first rod and the second rod are arranged at one circumferential position of the relay member. A locking member for supporting the relay member via the second rod;
The locking member is housed on the side of the water guiding hole inside the main body when not operating, and moves inside the main body in the discharge direction when operating to move the deflector, the first rod, the relay member, and the second rod. The sprinkler head according to claim 1 or 2, wherein the sprinkler head is protruded outside the main body. The main body is inwardly connected with a tubular main body body having one end connected to the water supply pipe and having the water introduction hole therein, and one end connected to the main body body, and a locking member that moves to the other end side during operation. A sprinkler head according to claim 3, further comprising a cylindrical frame formed with a locking flange. One end of the first rod is inserted into a hole provided in the deflector so that the first rod can be moved, and the other end is fixed to the relay member. The second rod is inserted so that one end can be moved into a hole provided in the relay member, and the other end The side is fixed to the locking member,
The sprinkler head according to claim 3 or 4, wherein the relay member and the deflector are supported so as to be capable of extending in multiple stages with respect to the locking member via the first rod and the second rod. The sprinkler head according to claim 5, wherein the deflector is provided with a lacking portion for insertion through which the second rod can be inserted through the plate thickness. One end of the first rod is fixed to the deflector, the other end is inserted through a hole provided in the relay member, and the second rod is fixed to the relay member at one end, and the other end is locked. It is inserted in a hole provided in the member as movable,
The sprinkler head according to claim 3 or 4, wherein the relay member and the deflector are supported so as to be capable of multi-stage extension with respect to the locking member via the first rod and the second rod. The sprinkler head according to claim 7, wherein the locking member is provided with an insertion lacking portion through which the first rod can be inserted through the plate thickness.

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