KR20040031585A - Sprinkler head - Google Patents

Abstract

PURPOSE: A sprinkler head is provided to prevent the lock equipment or the valve from being scattered even after the operation of sprinkler head. CONSTITUTION: The sprinkler head successively includes: a main body(10), having a hollowed nozzle which is connected with a water supply pipe; a valve(30), closing the nozzle outlet of the main body(10); a lock equipment, composed of a pair of narrow support bodies(51,52) for supporting the closed position of the valve(30) and an extendable and shrinkable ring(53); a deflector(41), connected with the lower-sided narrow support body(52) so as to scatter the water, discharged from the nozzle, when the valve is opened; and a thermosensitive operating member, connected with the lock equipment to release the latter on responding the heat. In normal situation, the ring(53) is extended so that the valve body is closed.

Description

Sprinkler Head {SPRINKLER HEAD}

The present invention relates to a sprinkler head for fire extinguishing.

The sprinkler head is connected to a source of digestive water, and when a fire breaks out, an internal valve body is opened to spray extinguishing water that is delivered from the source of digestive water. To extinguish and extinguish a fire.

As a conventional sprinkler head, there exist some which were described in patent document 1, 2, 3, for example.

As shown in Fig. 6, the sprinkler head of Patent Literature 1 has a lock mechanism with a belleville spring interposed below the valve body 3 which blocks the nozzle 2 of the main body 1. Is installed. The locking mechanism is composed of a pair of upper and lower clamping bodies 4 and 5 and a ring 6 which is partially notched inserted between the clamping bodies 4 and 5, The ring 6 is expanded by screwing a bolt through which the heat sensitive portion penetrates the female screw formed at the center.

The ring 6 extended by the clamping bodies 4 and 5 is in a state where it protrudes from the edges of the clamping bodies 4 and 5, and the protruding portion thereof is inclined on the upper part of the inner flange of the frame 7. The valve body 3 is pressed against the nozzle 2 to close the valve body 3.

In the event of a fire, the low melting point alloy in the cylinder 9, which is a heat-sensing portion provided in the lower parts of the clamping bodies 4 and 5, is melted, so that the lower clamping member 5 contracts the ring 6. It is moved downward by the ring 6 between the upper and lower clamping bodies 4, 5 is restored to its original shape and inserted.

When the ring 6 is contracted, the engagement is released, and the clamping bodies 4 and 5 fall, and the valve body 3 pressurized by the clamping bodies 4 and 5 also falls, so that the upper part of the deflector D installed on the valve body 3 is the frame 7. It is coupled to the inclined surface 8 of the inner flange of the. By opening the valve body 3, the nozzle 2 is opened and the extinguishing water is released, colliding with the deflector D, and sprayed indoors to suppress and extinguish the fire.

The sprinkler head is a flash type sprinkler head in which the deflector D protrudes from the ceiling surface to the interior after operation, and the main body 1, the valve body 3, and the deflector D of the sprinkler head are embedded in the ceiling. In position. In the interior, it is an excellent sprinkler head in terms of design because the thermal portion including the cylinder 9 of the sprinkler head is visible only on the ceiling surface.

Patent documents 2 and 3 describe miniaturized flash type sprinkler heads, and compared with the sprinkler head of patent document 1, the deflector is provided at a lower position, so that the entire sprinkler head is provided. The length is shortened. Also in these sprinkler heads, when a sprinkler head is operated, a lock mechanism, a valve body, a thermal part, etc. are scattered, and a nozzle is opened, and the water is sprayed by the deflector indoors.

Patent Document 1: US Patent No. 4618002

Patent Document 2: US Patent No.5094298

Patent Document 3: Japanese Utility Model Utility Model Publication No. 5-38760

Parts such as lock mechanism, valve body, and heat sensitive part scattered by the operation of the sprinkler head are caught in the deflector or the inner flange of the frame, which hinders the flow of the extinguishing water discharged from the nozzle. There is a possibility of spraying.

In addition, when the sprinkler head is in operation, the above-mentioned parts are scattered, but if the sprinkler head malfunctions, these parts should be collected and investigated to determine the cause. However, the parts scattered from the sprinkler head may be swept away by the extinguishing water discharged from the nozzles and disappeared, and it is difficult to recover the scattered parts.

Therefore, an object of the present invention is to provide a sprinkler head having a structure in which a lock mechanism or a valve is not scattered after operation of the sprinkler head.

1 is a cross-sectional view of the first embodiment.

2 is an enlarged cross-sectional view of the thermal operation unit.

3 is a cross-sectional view illustrating the assembled state.

4 is a cross-sectional view at the time of operation.

5 is a sectional view of Embodiment 2. FIG.

6 is a sectional view of a conventional sprinkler head.

Explanation of symbols on the main parts of the drawings

10: main body 15: flange

16: outer cylinder 20: frame

30 valve 40 spraying part

41: deflector 42: guide ring

43: pin 45: spring

50: thermal actuating part 51: upper clamping body

52: lower pinched body 53: ring

54: cylinder 55: bolt

64 heat collector 65 heat insulation material

70 support material 71 binder material

72: cover plate

In order to achieve the above object, the invention described in claim 1 includes a main body having a hollow nozzle connected to the water supply pipe from a water supply pipe side, and a nozzle outlet of the main body ( A valve that closes the opening, a pair of upper and lower clamping bodies that support the valve in the closed position, and a ring that can be expanded and contracted. It is connected to the lock mechanism and the lower clamping body which are comprised, the deflector which sprays the water discharged from a nozzle when a valve is opened, and is connected with the lock mechanism, The heat-sensitive part for releasing the lock mechanism in response to heat is provided in sequence. Usually, the ring of the lock mechanism is in an expanded state, and the outer side of the ring is coupled to the lower end of the main body so that the valve The body is closed In the sprinkler head (sprinkler head), which is in a state, a sprinkler head and the diameter of the deflector ring which is installed above the large and the deflector than the diameter of the ring.

The invention described in claim 2 includes a main body having a hollow nozzle connected to the water supply pipe from the water supply pipe side, a valve for closing the nozzle outlet of the main body, a top and bottom pair supporting the valve in a closed position and having holes therein. Is formed between the upper and lower clamping bodies, and an elastic ring is inserted between the upper and lower clamping bodies, and a low melting point alloy is filled therein to penetrate in the axial direction. Insert the male screw having the projection from the cylinder side into the through hole of the cylinder while the bottom surface of the cylinder having the hole is aligned with the lower part of the lower clamping body, and screw the female screw formed in the hole of the upper clamping body. The outer periphery of the ring, which is expanded by making it engage with the inner flange part installed at the lower end of the main body, In the sprinkler head come to be in the closed state the valve body, when larger than the size of the diameter of the deflector spraying water discharged from the nozzle ring deflector which the valve is open is a sprinkler head is installed on the lower side of the narrow delay.

In the invention according to claim 3, in the sprinkler head according to claim 1 or 2, an outer cylinder is provided in the main body to cover the lower part of the main body in a cylindrical shape, and the lower end of the outer cylinder is an inner flange. As a shape, it is a sprinkler head which can be slid between the lower part of a main body and an outer cylinder, and the deflector is connected to the ring couple | bonded with the said inner flange at the time of the sprinkler head operation | movement.

In the invention according to claim 4, in the sprinkler head according to claim 1 or 2, the valve that closes the nozzle outlet is a packing that is deposited on the valve body and the surface of the valve body. ), And the valve body is a sprinkler head which is provided inside the recess of the upper part of the upper clamping member and is configured not to be pulled out of the upper clamping member.

In the invention according to claim 5, in the sprinkler head according to claim 4, a spring is provided between the valve body and the upper clamping member, and the valve body and the spring are recessed in the upper part of the upper clamping member. It is installed inside, and the upper end of the upper clamping body is a sprinkler head bent inwardly.

Invention of Claim 6 is a sprinkler head of Claim 3 provided with the cover which covers the sprinkler head connectable with the lower part of an outer cylinder in the said sprinkler head.

The invention according to claim 7, wherein in the sprinkler head, the cover covering the sprinkler head is a sprinkler head which is operated prior to the operation of the sprinkler head in the event of a fire to expose the sprinkler head. In the invention according to claim 8, in the sixth aspect, in the sprinkler head, the cover covering the sprinkler head is connected to a lower portion of the outer cylinder with a joining member interposed therebetween, and the cover in the joining member. A sprinkler head characterized in that a surface layer having a good bonding property with a low melting point alloy is formed on a joining surface thereof, and the surface layer and the cover are joined by a low melting point alloy. .

(Example)

The best embodiment in carrying out the present invention is shown in Example 1. In the second embodiment, the sprinkler head of the first embodiment is provided with a cover for covering the sprinkler head.

Example 1

Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. 1 is a cross-sectional view of Embodiment 1, FIG. 2 is an enlarged cross-sectional view of a heat-sensitive portion, FIG. 3 is a cross-sectional view illustrating an assembled state, and FIG. 4 is a cross-sectional view at the time of operation.

The sprinkler head of the first embodiment is composed of a main body 10, a frame 20, a valve 30, a sprinkling part 40, and a thermal operation part 50. .

The main body 10 is formed by opening a nozzle 11 therein, and a valve seat 12 having a sharp tip is formed at a lower end of the nozzle 11. A male screw 13 for connecting with a water supply pipe is formed in the upper outer circumference of the main body 10, and a male screw 14 for screwing with the frame 20 is formed in the lower part.

The middle part is a flange 15 of a protruding shape, and the upper portion of the outer cylinder 16 is coupled to the outer circumference of the flange 15. The lower end of the outer cylinder 16 is an inner flange 17 in which a step is formed in the axial direction so that a guide ring 42 to be described later can be engaged.

The frame 20 has a cylindrical shape, and an internal thread 21 for screwing with the above-mentioned external thread 14 is formed in the upper inner circumference. The lower end is an inner flange 22 having an end portion projecting in the axial direction, and the upper portion of the inner flange 22 is an inclined surface or an outer circumferential surface of a ring 53 of the thermal operation unit 50. It is roughly the same curved surface as ().

In addition, a plurality of holes 23 are formed in the side surface, and the holes 23 are used to fasten a wrench when screwing the frame 20 in which the thermal operation unit 50 is assembled with the male screw 14 of the main body 10.

The valve 30 is plate-shaped, and a convex part is formed in the upper surface of the center part. The valve 30 is provided with a belleville spring 31 below, and is embedded in a clamping body 51 above the thermal operation unit 50. The valve body 30 pressurizes the valve seat 12 via the packing 32 by the thermal operation unit 50.

The sprinkling section 40 is composed of a deflector 41, a guide ring 42, a pin 43, and the like.

The deflector 41 is shaped like a board, and has a hole 44 formed in the center for joining the thermal operation unit 50. A plurality of grooves are formed on the outer circumference of the deflector 41. The groove serves to spray fire extinguishing water discharged from the nozzle within the protective range.

The guide ring 42 has a ring shape, is connected to the deflector 41 by pins 43 and 43, and is provided below the flange 15 with a spring 45 interposed therebetween. The guide ring 42 may slide between the lower outer circumference of the main body 10 and the inner circumference of the outer cylinder 16.

The thermal operation unit 50 includes a lock mechanism consisting of two clamping bodies 51, 52, and a ring 53, a cylinder 54, which is a heat-sensitive body, and a bolt connecting the lock mechanism and the heat-sensitive body. 55). Since the thermal operation unit provided in the present invention is substantially the same as that described in the specification of US Pat. No. 4618002 described in the prior art, the following description will mainly describe other portions having different structures.

The clamping body 51 is formed in the outer periphery, and is isolate | separated into the upper part 56 with a large outer diameter, and the lower part 57 with a small outer diameter. The above-mentioned valve 30 and the disc spring 31 are accommodated in the recessed part of the upper surface 56, and it is comprised so that the valve 30 etc. which were accommodated by bending the upper end in the axial direction may not be pulled out.

At the lower end of the outer periphery of the upper portion 56, an end portion is formed which forms a ring receiving portion 58.

The lower part 57 is coupled to slide inside the clamping body 52, and the internal thread 59 is formed in the inner periphery of the hole formed from the lower end.

The clamping body 52 is cylindrical and accommodates the lower part 57 of the clamping body 51 inside. The flange 60 of the shape which protrudes is formed in the upper part of the clamping body 52. On the side surface of the flange 60, a deflector 41 is provided and fixed, and an inclined surface is formed on the outer circumference of the upper end of the flange 60 so that the ring 53 is engaged.

An end is formed in the lower inner circumference of the clamping body 52, and the hole 61 is formed. In the hole 61, a bolt 55 which engages the cylinder 54 is inserted and screwed into the female screw 59 of the clamping body 51 accommodated inside the clamping body 52.

The ring 53 is made of an elastic material and is made elastic. Notches may be formed in part of the ring 53. The inner diameter of the ring 53 is approximately equal to the diameter of the ring receiving portion 58 of the clamping body 51 in the free state.

The cylinder 54 has a cup shape, and a low melting point alloy is filled therein. A hole 62 through which the bolt 55 penetrates is formed at the center thereof, and a flange 63 is formed at the edge thereof to extend to the outside.

The cylinder 54 is formed of a material having good thermal conductivity such as copper or aluminum to absorb heat of fire and to transfer heat to the low melting point alloy therein. In order to increase the heat collector (heat collector) 64 formed of the same material is installed in contact with the bottom surface of the cylinder 54.

Insulating material 65 may be inserted between the heat collector 64 and the sandwiching body 52 so that the heat absorbed by the cylinder 54 is not transferred to the sandwiching body 52. The insulating material 65 is formed of a material having poor thermal conductivity. In addition, by forming a space between the heat collector 64 and the sandwich body 52, heat can be prevented from escaping.

The bolt 55 is formed of a head 67 which can slide the male screw 66 and the inside of the cylinder 54. Wrench holes are formed in the upper surface of the head 67. As described above, a cylinder 54 filled with a low melting point alloy, a heat collector 64, and a bolt 55 penetrating the heat insulating material 65 are inserted into the clamping body 52, and the clamping body accommodated therein. Screw onto 51 thread 59.

Next, the assembly procedure of Example 1 is demonstrated.

First, assemble the thermal actuator 50. A ring 53 is inserted between the clamping body 51 in which the valve body 30 is embedded and the clamping body 52 in which the watering unit 40 is fixed to accommodate the clamping body 51 in the clamping body 52. Screw 55 to female thread 59 of clamping body 51 such that cylinder 54 and clamping body 52 do not fall out.

Then position the ring 53 of the thermal actuating section 50 assembled as described above to the position of the inner flange 22 of the frame 20, and reach the position where the ring 53 is coupled to the inner flange 22 of the frame 20 to expand the ring 53. Rotate bolt 55 until

Subsequently, the spring 45 is coupled to the main body 10 from the male screw 14 side, and the female screw 21 of the frame 20 on which the thermal actuating part 50 is mounted is screwed to the male screw 14 of the main body 10. At this time, it is easy to work by rotating the wrench on the hole 23 of the frame 20.

The screw 30 is pressurized to the valve seat 12 of the nozzle 11 by screwing the female screw 21 of the frame 20 to the male screw 14 of the main body 10 so that the nozzle 11 is closed by inserting the packing 32 into the valve seat 12. In addition, by installing the disc spring 31, the valve 30 does not tilt, and the packing 32 can be evenly inserted into the valve seat 12.

Finally, the outer cylinder 16 is inserted to cover the thermal operation unit 50 installed in the main body 10, and then the assembly is completed by bending the upper end of the outer cylinder 16 to the flange 15 of the main body 10 and engaging.

Subsequently, the operation of the first embodiment will be described.

The sprinkler head of Example 1 is connected with the water supply pipe installed behind a ceiling, and is provided in the position which a cylinder part protrudes from a ceiling surface. When a fire occurs, the cylinder 54 and the heat collector 64 are heated by the heat of the fire, and heat is transferred to the low melting point alloy inside the cylinder 54.

When the low melting point alloy is melted by heat and flows out from the cylinder 54, the ring 53 is pushed downward by the restoring force and returned to its original shape. The inner flange 22 is released.

In this case, the valve 30 is separated from the valve seat 12 by the spring 45 and the pressure of the extinguishing water filled in the nozzle 11. At the same time, the guide ring 42 is extruded and slides in the outer cylinder 16 to be coupled to the inner flange 17 of the lower end of the outer cylinder 16.

The fire extinguishing water discharged by the nozzle 11 collides with the deflector 41 and is uniformly sprayed into the room to suppress and suppress the fire.

Example 2

Next, Example 2 will be described with reference to FIG. 5 is a sectional view of Embodiment 2. FIG. In Example 2, the sprinkler head of Example 1 is provided with a cover for covering the sprinkler head.

The cover is composed of a support member 70, a joining member 71, and a cover plate 72.

The support member 70 has a cylindrical shape, and is arranged in a spiral shape on the inner circumferential surface of the cylindrical portion on the outer circumferential surface 16 of the sprinkler head in the first embodiment. A spiral groove 73 is screwed with a plurality of protrusions T formed to protrude. The height of the support member 70 with respect to the ceiling surface can be adjusted by the spiral groove 73.

The lower end has a flange shape extending outward, and a plurality of connection portions 75 vertically downward from the flange face are provided in several places of the flange portion 74. The lower end of the connecting portion 75 is bent horizontally, and the bonding member 71 is fixed to the lower surface thereof, and is joined to the cover plate 72 by the bonding member 71.

The joining member 71 is formed by using a material having poor thermal conductivity as a base material and is fixed to the supporting material 70 and installed. On the surface of the cover plate 72, a surface layer is formed of a material such as copper or nickel having a good bonding property with a so-called low melting point solder, and the surface layer and the cover plate 72 are made of a low melting point alloy. Is bonded.

In addition, it is preferable to use a low melting point alloy whose melting temperature is lower than the low melting point alloy used for a sprinkler head.

The cover plate 72 has a disk shape and is connected to the support member 70 with the joining member 71 interposed therebetween as described above. The cover plate 72 is formed of a metal plate having good thermal conductivity such as copper or aluminum to promote melting of the low melting point alloy.

The procedure for attaching the cover having the above configuration to the sprinkler head of the first embodiment will be described.

It connects with the water supply pipe installed behind a ceiling, and inserts the cylinder part of the support material 70 of the cover which the cover plate 72 connects via the joining member 71 while rotating with respect to the outer cylinder 16 in the sprinkler head provided in the ceiling surface.

In this way, the projection T formed on the outer circumference of the outer cylinder 16 and the spiral groove 73 of the support member 70 are screwed together. In addition, when the sprinkler head is rotated so that the upper surface of the flange portion 74 of the support member 70 contacts the ceiling surface, the installation is completed.

Next, the operation in case of fire will be described. In the event of a fire, the cover plate 72 absorbs the heat of the fire and transfers the heat to the low melting alloy at the junction with the joining member 71. The heat transferred to the low melting point alloy is effective in melting the low melting point alloy because heat is not transferred to the support material 70 because the base material of the bonding member 71 is made of a material having poor thermal conductivity.

When the low melting point alloy melts and the cover plate 72 falls, the sprinkler head appears, and heat of fire is absorbed by the cylinder 54 and the heat collector 64 and transferred to the low melting point alloy in the cylinder 54 to operate the sprinkler head.

The diameter of the deflector is made smaller than the diameter of the ring so that the ring is mounted on the deflector, and the lock mechanism and the heat sensitive portion are connected by a screw, so that the lock mechanism and the heat sensitive portion are scattered during operation like a conventional sprinkler head. (I) It is not possible to spray the extinguishing water after the sprinkler head is operated without the heat-sensing part being removed from the sprinkler head. It remains and the precision of irradiation improves.

In addition, by installing the valve body embedded in the clamping body, when the sprinkler head is operated as in the prior art, the extinguishing water sprayed by the valve body caught in the frame does not occur unevenly. It is a highly reliable sprinkler head which is sprayed uniformly in the room.

Claims (8)

A main body having a hollow nozzle connected to the water supply pipe from a water supply pipe side, a valve closing the nozzle outlet of the main body, and a valve Lock mechanism consisting of a pair of upper and lower clamping bodies for holding the rod in the closed position, and a ring capable of expanding and contracting the lower and lower clamping bodies A deflector which sprays water discharged from the nozzle when the valve is opened and the valve is opened, and a heat sensing part which is connected to the lock mechanism to release the lock mechanism in response to heat. The sprinkler head is provided in order, and normally the ring of the lock mechanism is in an expanded state, the outer side of the ring is coupled to the lower end of the main body, and the valve body is closed. sprinkler head), Sprinkler head, characterized in that the diameter of the deflector is larger than the diameter of the ring is installed above the deflector. A main body having a hollow nozzle connected to the water supply pipe from the water supply pipe side, a valve for closing the nozzle outlet of the main body, a pair of upper and lower clamping bodies supporting the valve in the closed position and having holes therein, A cylinder having an elastic ring is inserted between the upper and lower clamping bodies, and a low melting point alloy is filled therein to provide a through hole in the axial direction. The outer periphery of the ring extended by inserting a male screw having a projection from the cylinder side into the through hole of the cylinder while screwing the female screw formed in the hole of the upper clamping body in a state where the bottom surface of the lower clamping body is aligned with the lower surface of the lower clamping body. The outer body is coupled to the inner flange part installed at the lower end of the main body so that the valve body is normally closed. In the sprinkler head which becomes, A sprinkler head, characterized in that the diameter of the deflector for spraying water discharged from the nozzle when the valve is opened is larger than the diameter of the ring and the deflector is installed in the lower clamping body. The method according to claim 1 or 2, In the sprinkler head, the main body is provided with an outer cylinder covering the lower part of the main body in a cylindrical shape, and the lower end of the outer cylinder has an inner flange shape, and can slide between the lower part of the main body and the outer cylinder. The sprinkler head is characterized in that when the sprinkler head is operated, a deflector is connected to a ring coupled to the inner flange with a plurality of pins interposed therebetween. The method according to claim 1 or 2, In the sprinkler head, the valve closing the nozzle outlet is composed of a valve body and a packing deposited on the surface of the valve body, and the valve body is the upper part of the upper clamping body. A sprinkler head, which is installed inside the recess of the upper body and is configured not to be released from the upper clamping body. The method of claim 4, wherein In the sprinkler head, a spring is provided between the valve body and the upper clamping body, and the valve body and the spring are installed inside the recess of the upper part of the upper clamping body, and the upper end of the upper clamping body is the inner side. Sprinkler head, characterized in that the curved (屈曲). The method of claim 3, In the sprinkler head, a sprinkler head, characterized in that the cover is connected to the lower portion of the outer cylinder to cover the sprinkler head. The method of claim 6, The sprinkler head of the sprinkler head, wherein the cover covering the sprinkler head is operated before the operation of the sprinkler head in the event of a fire to expose the sprinkler head. The method of claim 6, In the sprinkler head, a cover covering the sprinkler head is connected to a lower portion of the outer cylinder with a joining member interposed therebetween, and a low melting point alloy (A) on the joining surface of the sprinkler member with the cover in the joining member. A sprinkler head characterized in that a surface layer having good adhesion to a film is formed, and the surface layer and the cover are joined by a low melting point alloy.