JPH11333018A - Multi-type sprinkler head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a non-sprinkled area, to reduce duplicated sprinkled areas and to improve fire extinguishing effect by forming a sprinkler hole for sprinkling extinguishing fluid close to a sprinkler head below a deflector and by forming a sprinkling hole for sprinkling extinguishing fluid far away above the sprinkling hole for sprinkling nearby. SOLUTION: A deflector 20 of a multi-type sprinkler head is formed in the shape of a bowl and mounted by screwing a male screw 21 formed on its upper outside to a female screw on a flange of a sprinkler head body 10. Sprinkling holes for sprinkling extinguishing fluid are formed with an interval around the side face of this deflector 20, and the form of sprinkling is determined by adjusting the height of this sprinkling hold as appropriate. When the sprinkling shape is a square, for example, a high farthest sprinkling hole 22 is formed at the position of 90 degree interval, a low closest sprinkling hole 23 is formed between these farthest sprinkling holes 22, and sprinkling holes 24... between both the sprinkling holes 22 and 23 are formed so that the upper position is changed for the time being.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a sprinkler head for extinguishing a fire by spraying water when a fire occurs, and more particularly to a multi-type sprinkler head in which a bowl-shaped deflector is directly installed on a main body.

[0002]

2. Description of the Related Art Sprinkler heads are functionally classified into a closed type and an open type, and structurally classified into a frame yoke type, a flash type and a multi type.

[0003] The closed type, which is classified functionally, means that, in normal times, the valve body closes the spout of the main body, and the valve body is held by the thermosensitive decomposition part. The part is disassembled, and the valve body opens the jet port to spray the fire extinguishing liquid.

[0004] In this closed type, when a fire occurs on the floor, only the sprinkler head mounted just above the place where the fire occurred due to the abnormally high temperature of the fire operates, and the fire can be extinguished in the early stage. In addition, the amount of the fire extinguishing liquid to be applied is small. Therefore, closed sprinkler heads require expensive furniture, office equipment,
There is little water damage to wet important documents with fire extinguisher. Therefore, closed sprinkler heads are installed in many buildings such as high-rise buildings, department stores, condominiums, and underground shopping malls.

[0005] In the open type, the jet port of the main body is always open, and when a fire occurs, a fire detector attached separately with the heat or smoke of the fire detects and emits a signal. By operating a water source pump and a valve in the middle of the pipe, the fire extinguishing liquid is sent to the pipe and sprayed from the sprinkler head.

[0006] The open type is mounted in a building having a very high ceiling, such as a movie theater, a theater, a warehouse, or the like. If the above-mentioned closed sprinkler head is attached to a building with a high ceiling, even if a fire occurs on the floor, the heat of the fire does not easily reach the ceiling, causing a large fire to develop. Therefore, in a building with a high ceiling, a fire detector was installed at a place lower than the ceiling, a fire on the floor was detected early by the fire detector, a signal was emitted, and based on the signal, the fire detector was mounted on the high ceiling. The fire extinguishing solution is sprayed from the sprinkler head to extinguish the fire.

The frame yoke type structurally classified is
A frame yoke protrudes in a horseshoe shape from both sides of the main body, and a deflector having a large number of blades formed on a peripheral surface is installed at a tip of the frame yoke. This frame yoke type is inexpensive because of its simple structure, but it is inferior in interior design because it protrudes from the ceiling when installed, and it is easy to encounter external impact. is there.

In the flash type, the deflector is stored inside the sprinkler head at normal times, and when a fire occurs, the deflector drops by a certain distance, and the fire extinguishing liquid ejected from the jet port is sprayed by the deflector in all directions. Is what is done. This flash type has very good interior design because it hardly protrudes from the ceiling surface, and has excellent features that it is hard to encounter external impact, but its structure is complicated Therefore, it is more expensive than other sprinkler heads.

[0009] In the multi-type, a bowl-shaped deflector having a large number of holes formed therein covers the main body, and a fire extinguishing liquid ejected from a spout at the time of a fire fills the inside of the deflector, and the deflector has holes in all directions. Is to be sprayed. The multi type does not protrude from the ceiling surface as compared with the frame yoke type, and the structure is not as complicated as the flash type. Therefore, the multi-type is between the frame yoke type and the flash type in terms of design, price, and the like. The present invention relates to this multi-type.

By the way, the Fire Service Law states that in a building to which a sprinkler head is attached, fire extinguishing liquid must be sprayed on all floor surfaces. Therefore, in the conventional sprinkler head, in order to prevent a non-spreading area from being generated, the sprinkler heads are mounted so that a point J where the circular spraying areas of the four sprinkler heads H overlap as shown in FIG.

Further, in recent buildings, there is a strong tendency to demand a more novel design, and as a result, various shapes of the spray floor surface have been born. In order to prevent the non-spreading area from being generated on the floor having such a shape, it is necessary to set the mounting pitch of the sprinkler head narrow so that a part of the circular spraying area is overlapped.

[0012]

When the sprinkler head is mounted so that the non-spreading area cannot be formed,
As shown by the dotted line in FIG. 7, a large overlapping portion (hatched portion) is formed in the spraying area of the fire extinguishing liquid sprayed from two adjacent sprinkler heads. This portion has no problem in extinguishing the fire, but not only wastes the fire extinguishing liquid, but also reduces the sprinkler head mounting pitch and increases the number of sprinkler heads mounted. Therefore, the cost of the sprinkler head, the cost of the piping material for mounting the sprinkler head, and the cost of the installation work have been high.

According to the present invention, since a spraying shape suitable for the spraying floor surface shape can be obtained, not only the overlapping spraying area can be reduced, but also the non-spraying area cannot be formed. Accordingly, it is an object of the present invention to provide a multi-type sprinkler head which can reduce the cost compared with the conventional sprinkler head.

[0014]

SUMMARY OF THE INVENTION The inventor of the present invention has proposed that when a liquid is caused to flow laterally from a high place and a low place at the same position, the liquid flows from a high place to a lateral place rather than from a low place to a lateral place. The present invention was completed by paying attention to the fact that the outflowed person reaches a distant place.

According to the present invention, in a multi-type sprinkler head in which a bowl-shaped deflector having a large number of water sprinkling holes is directly installed on a main body, a water sprinkling hole for spraying a fire extinguishing liquid near the sprinkler head is drilled below the deflector. The sprinkler hole for spraying the fire extinguishing liquid to the far side of the sprinkler head has an upper portion formed above the sprinkler hole for the nearby spray, and between the sprinkler hole for the nearby spray and the sprinkler hole for the remote spray. The sprinkler head is characterized in that the upper position of the sprinkler hole is temporarily changed from the upper position of the sprinkler hole of the nearby spray to the upper position of the sprinkler hole of the far spray. It is.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a sprinkler hole sprayed far from a mounting position of a sprinkler head has a lower portion located at the same position as a sprinkler hole of a nearby sprayer, and an upper portion located above the sprinkler hole of a nearby sprayer. The sprinkling hole provided between the sprinkling hole for distant spraying and the sprinkling hole for nearby spraying has its upper part changed temporarily between the upper part of the sprinkling hole for remote spraying and the upper part of the sprinkling hole for nearby spraying. ing.

The sprinkler head according to the present invention may be in any shape, such as a substantially square, substantially rectangular, substantially triangular, or elliptical shape. These desired spray shapes can be obtained by appropriately adjusting the positions of the far spray water holes and the near spray water holes.

The multi-type sprinkler head of the present invention can be applied to a closed type having a thermal decomposition part and an open type without a thermal decomposition part.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a front sectional view of an open-type multi-type sprinkler head of the present invention, FIG. 2 is a bottom view of the same, FIG. 3 is a front view as viewed from a direction A in FIG. 2, and FIG. Front view, FIG.
FIG. 6 is a view in which a deflector is developed laterally, and FIG. 6 is an explanatory view of a spray area when a plurality (four) of the sprinkler heads of the present invention are attached.

The multi-type sprinkler head includes a main body 1
0, a deflector 20.

The body 10 has a cylindrical body 11 at the top and a flange 12 at the bottom. A nozzle 13 is provided inside the cylindrical body 11, and a male screw 14 screwed to a pipe (not shown) is provided on the outside, and a female screw 15 is provided inside the flange 12.

The deflector 20 has a bowl shape, and is provided with a male screw 21 on the upper outer side, and is attached to the main body by screwing with the female screw 14 of the flange 12 described above. Around the side surface of the deflector 20, water spray holes for spraying a fire extinguishing liquid are formed at regular intervals. By appropriately adjusting the height of the water spray hole, the shape of the water spray can be determined. For example, if the watering shape is square,
As shown in the figure, the farthest water spouting holes 22 at 90-degree intervals,
22, 22, 22 are drilled, and the nearest spray holes 23, 23, 23, 23 are drilled between the farthest spray holes and the farthest spray holes. FIG. 3 shows the nearest sprinkling hole 2 as viewed from the direction of arrow A.
FIG. 4 is a front view when 3 is at the front, and FIG. 4 is a front view when the farthest water sprinkling hole 22 is at the front when viewed from the arrow B direction. And the furthest watering hole 22 and the nearest watering hole 2
The position of the upper part of the watering holes 24 between the three is temporarily changed. The state of the positions above the farthest water sprinkling holes 22, the nearest watering holes 23, and the water sprinkling holes 24 therebetween can be easily understood from the development view of the deflector in FIG.

In the farthest water spray hole 22, the fire extinguishing liquid is sprayed far from the upper part, and is sprayed to the vicinity from the lower part, so that uniform spraying is performed in one direction. In the nearest watering hole 23, spraying is not performed far away from the upper part, and intermediate watering is performed from the watering hole between the farthest watering hole 22 and the nearest watering hole 23. Accordingly, the sprinkler head according to the present invention has a substantially square shape as shown in FIG. 6, the farthest spray is at the corner b of the square, and the closest spray is at the center a of the side.

As shown in FIG. 6, when a plurality (four) of the sprinkler heads of the present invention are attached, the sprinkler heads have a substantially square spray shape as shown in FIG. It is narrower than the overlapping part in the conventional circular spray.

Next, the operation of the multi-type sprinkler head of the present invention will be described. When a fire occurs and a fire detector (not shown) is activated, a pump for pumping the fire extinguishing liquid is started, and the extinguishing liquid sent from the pipe passes through the nozzle 13 of the sprinkler head and fills the bowl-shaped deflector 20. I do. The fire extinguishing liquid then gushes out of the sprinkler holes in the deflector. At this time, the fire extinguishing liquid spouting from the tall water sprinkling hole, that is, the farthest water sprinkling hole 22, is sprayed far away, and the fire extinguishing liquid spouting from the low sprinkling water hole, that is, the nearest sprinkling water sprinkling hole 23 is moved to the vicinity. Is sprayed. The water is sprayed from the water sprinkling hole 24 formed between the far water sprinkling hole and the nearby water sprinkling hole according to its height. As a result, a substantially square scatter area as shown in FIG. 6 is obtained.

In the conventional sprinkler head of circular spraying, 25 sprinkler heads were required to install the sprinkler head so as not to generate a non-spraying area. Only a small number of installations are required.

[0027]

As described above, according to the multi-type sprinkler head of the present invention, the positions of the water spray holes of the remote spray and the nearby spray drilled in the deflector are appropriately changed, and the water spray holes of the remote spray and the near spray nozzle are provided. Since the desired spray shape is obtained by gradually changing the position of the upper part of the water sprinkling hole drilled between the water sprinkling holes of spraying, not only the non-spraying area but also the overlapping spraying area is reduced to effectively extinguish fire. Can be done,
Further, since the number of sprinkler heads to be attached can be reduced, costs required for piping materials, piping work and the like can be reduced.

[Brief description of the drawings]

FIG. 1 is a front sectional view of an open-type multi-type sprinkler head of the present invention.

FIG. 2 is a bottom view of the open multi-type sprinkler head of the present invention.

FIG. 3 is a front view as viewed from a direction A in FIG. 2;

FIG. 4 is a front view as viewed from a direction B in FIG. 2;

FIG. 5 is a diagram in which a deflector is expanded sideways.

FIG. 6 is a spray area when a plurality of sprinkler heads of the present invention are attached.

FIG. 7 is a spraying shape of a conventional sprinkler head.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Main body 11 Cylindrical body 12 Flange 13 Nozzle 14 Male screw 15 Female screw 20 Deflector 21 Male screw 22 Farthest watering hole 23 Nearest watering hole 24 Watering hole

Claims (1)

[Claims] In a multi-type sprinkler head in which a bowl-shaped deflector provided with a large number of water sprinkling holes is directly installed on a main body, a water sprinkling hole for spraying a fire extinguishing liquid near the sprinkler head is drilled below the deflector. The sprinkler hole for spraying the fire extinguishing liquid to the far side of the sprinkler head has an upper portion formed above the sprinkler hole of the nearby spray, and a hole between the spray hole of the nearby spray and the spray hole of the far spray. A multi-type sprinkler head, wherein a position of an upper part of a water sprinkling hole is temporarily changed from a position of an upper part of a water sprinkling hole of a nearby spray to a position of an upper part of a water sprinkling hole of a remote spray.