JPH09294821A - Water sprinkling method and fire extinguishing water sprinkling nozzle of stationary fire extinguishing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce damage caused by water by heightening the fire extinguishing capability and lessening the amount of sprinkling, and to reduce the cost by making the capacity of a pump smaller. SOLUTION: Water is sprinkled from a fire extinguishing water sprinkling nozzle to the surface of a specified object for fire extinguish within a designated protection range in such a manner that plural spot-like sprinkling patterns 27 are continuously arranged and when the respective spot-like sprinkling patterns 27 collide with the surface of an object for fire extinguish, the patterns overlapped each other to form band-like sprinkling patterns 24 (24a, 24b), and the band-like sprinkling pattern 24 is scanned within the protection range to sprinkle water over the whole area within the designated protection range.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water sprinkling method for a fixed type fire extinguishing equipment such as a sprinkler fire extinguishing equipment and a water sprinkling nozzle for extinguishing a fire.

[0002]

2. Description of the Related Art Conventionally, as a fire extinguisher sprinkler nozzle used in this type of sprinkler fire extinguishing equipment, in order to uniformly sprinkle water over the entire protection area, water is dispersed by a deflector and sprinkled in granular form. There is one such as that shown in No. 15 (JP-A-5-7633). FIG. 15 shows a fusible link type water spray nozzle for extinguishing a fire, in which a water discharge port 2 is formed in a nozzle body 1, and a plug 3 and a deflector 4 provided at the water discharge port 2 are provided.
A pair of levers 5A, 5B between the contact points 6a, 6b,
It is locked by 6c and supports the plug 3 in a closed state.
The lever 5A and the lever 5B are the fuse 7a as a heat sensitive body.
The pair of links 7 fixed to each other are attached to maintain the closed state of the stopper 3.

When the temperature rises due to fire, the fuse 7a
When is melted, the pair of links 7 is disassembled as shown by the arrows, the levers 5A and 5B are unlocked, the levers 5A and 5B are repelled by water pressure, and the plug 3 is dropped from the water outlet 2 to release the pressurized water. It spouts from the water outlet 2 and water sprinkling is started. At this time, the water ejected from the water discharge port 2 hits the decretor 4 and is evenly sprayed over the entire protection range.

[0004]

However, in such a conventional fire extinguisher sprinkler nozzle, since the continuous radiation of a predetermined flow rate of, for example, 80 liters / minute or more per nozzle, fire extinguishing ability is achieved. However, a relatively large amount of fire extinguishing liquid or water is required, and of course, radiation to objects other than the fire extinguishing target causes a large amount of secondary damage due to the fire extinguishing liquid or water, so-called water damage. There was a problem of becoming.

Further, in terms of equipment, there is a problem that the water tank and the pump have a large capacity and the size of the pipe is large, so that the cost of the entire equipment becomes high. In addition, in the conventional fire extinguisher sprinkler nozzle, in order to spray water evenly over the entire protection area, the water is applied to the deflector to disperse the particles in a granular manner. It is small and loses the airflow of a fire and evaporates before reaching the depth of the fire. For this reason, it takes time to suppress the fire, and sometimes the fire cannot be extinguished at all. Also, the amount of water increases,
Damage due to water damage will also increase.

Further, from a certain point within the protection range,
Even if the flame of the fire at that point weakens for a moment due to the granular water, the water around the point evaporates once, and the water near the point begins to burn again. Therefore, it takes time to completely extinguish the fire. The present invention has been made in view of such conventional problems, and reduces the radiation loss per one water spray nozzle for fire extinguishing while ensuring the fire extinguishing ability, thereby reducing water loss, An object of the present invention is to provide a water spraying method for a fixed fire extinguisher and a water spray nozzle for extinguishing a fire, which can reduce the total equipment cost by reducing the capacity of a pump or the like.

[0007]

To achieve this object, the present invention is constructed as follows. First of all, the present invention provides one fire extinguisher nozzle as a sprinkling method for a fixed type fire extinguishing equipment for extinguishing a fire by spraying a fire extinguisher liquid or water for extinguishing water in a predetermined protection range from a fire extinguisher water spray nozzle connected to a fire extinguisher pipe. To a specific fire-extinguishing target surface, a plurality of spot-shaped spray patterns are continuously arranged, and when each spot-shaped spray pattern hits the fire-extinguishing target surface, they stick together to form a band-shaped spray pattern. As described above, water is intensively sprayed, and the strip-shaped spray pattern is scanned within the protection range to spray water over the entire predetermined protection range.

Here, it is desirable that the continuous spot-shaped spraying pattern is sprayed so that the interval between adjacent spraying patterns is approximately 30 cm or less. Further, it is desirable that the water is sprayed so that the angle difference between the advancing angles of the spot-shaped spray pattern that hits the fire extinguishing target surface is approximately 5 degrees or less. The present invention also provides a fire extinguisher spray nozzle for a fixed fire extinguishing facility, which is connected to a fire extinguishing pipe to which a fire extinguishing liquid or water for extinguishing water is pumped, and sprays the fire extinguishing liquid or water for extinguishing water within a predetermined protection range in the event of a fire. This fire extinguisher spray nozzle has a plurality of spot-shaped spray patterns arranged in a row on a specific fire extinguishing surface within a protected area, and when each spot-shaped spray pattern hits the fire extinguishing surface, they stick together to form a strip. It is composed of a head unit that sprays water intensively so that a spraying pattern is formed, and a scanning unit that sprays a strip-shaped spraying pattern on the entire area within the protection range by scanning the head unit.

The head portion of the water spray nozzle for extinguishing fire is provided with a plurality of water spray holes so that the distance between adjacent spray patterns of continuous spot-shaped spray patterns is about 30 cm or less. Further, a plurality of water spray holes are provided so that the angle difference between the advancing angles of the spot-shaped spray patterns hitting the fire extinguishing target surface from the head part of the water spray nozzle for fire extinguishing is about 5 degrees or less.

The strip-shaped spray pattern by the head portion of the fire extinguisher spray nozzle is a spray pattern in which water is sprayed from at least the vicinity of the center to the outer peripheral portion of the protection area. The strip-shaped spray pattern is a swirl shape in which water is sprayed from near the center of the protection area to the outer peripheral surface. Further, the head portion may be provided with a plurality of water spray holes whose opening directions are appropriately set so that spot-shaped spray patterns are continuously arranged on the fire-extinguishing target surface in the protection range.

According to the water spraying method for fixed fire extinguishing equipment and the water spray nozzle for fire extinguishing according to the present invention, a plurality of spot-like spray patterns are continuously sprinkled in a row at a specific portion within the protection range. Therefore, when viewed from one point within the protection range, the sprinkling amount instantaneously increases, and at the same time, the striking force and the particle size of the water hitting the fire extinguishing object also increase, so the fire extinguishing ability increases.

That is, in the present invention, water is not dispersed particles but is sprayed on a fire extinguishing object because it is sprayed as a spot-like water mass with a strong hitting force that is concentratedly sprayed on a specific portion. The fire can reach the deep part of the fire without losing the airflow, the fire extinguishing ability is enhanced, and the time to suppress the fire can be shortened. Therefore, the amount of water to extinguish the fire can be small. Further, according to the present invention, when the water having a continuous spot-like water spray pattern hits the fire extinguishing target surface, the water spreads and sticks to each other to form a continuous strip-shaped spray pattern. When scanning such a band-shaped spray pattern,
You can partition the place where the water within the protected area is extinguished by sprinkling water with the burning place that will be sprinkling from now on with a spray pattern, as a result, the extinguished part will not re-fire and the fire can be extinguished earlier .

[0013]

1 is an explanatory view of a sprinkler fire extinguishing facility using a fire extinguisher sprinkling nozzle of the present invention. FIG.
In, a fire extinguishing pipe 12 is installed on the back side of the ceiling 11. The fire extinguishing water spray nozzle 14 of the present invention is connected to the fire extinguishing pipe 12 via, for example, an electric valve 13.

The water spray nozzle 14 for extinguishing fire is the nozzle body 14
A, a hemispherical head portion 14G mounted rotatably around the nozzle body 14A in a horizontal direction, and a motor 18 as a scanning portion for rotationally scanning the head portion 14G.
That is, the side surface of the nozzle body 14A is connected to the fire-extinguishing pipe 12 on the secondary side of the motor-operated valve 13, and receives the supply of fire-fighting water pressurized by starting the fire-fighting pump of the sprinkler fire-fighting equipment during a fire.

A motor 18 as a scanning portion is installed above the nozzle body 14A, and a rotary shaft 18A of the motor 18 is connected to the head portion 14G side. The rotary shaft portion 14M is integrally formed on the upper portion of the nozzle portion 14G. Rotating shaft part 1
4M is fitted in the lower end portion of the nozzle body 14A, and rotatably supports the head portion 14G. Rotating shaft 14M
Nozzle body 14A has two ring grooves 14 on the outer circumference.
F and 14J are formed and O-rings 19 and 20 are respectively fitted therein to prevent water from leaking from the nozzle body 14A.

A plurality of communication passages 14H are formed through the upper part of the rotary shaft portion 14M so that water supplied from the fire extinguishing pipe 12 to the nozzle body 14A can be sent to the head portion 14G. On the hemispherical surface of the hemispherical head portion 14G, a plurality of water spray holes 26 are formed in a line in the radial direction. When sprinkling water, the sprinkling holes 26 concentrate water on a specific portion within the protection range to form a strip-shaped spray pattern 2.
4 is formed.

FIG. 2 is an explanatory view seen from below the head portion 14G of FIG. 1, in which a plurality of water spray holes 26 are formed in a row in the radial direction on the hemispherical surface of the hemispherical head portion 14G. The ceiling 1 of the fire extinguisher sprinkling nozzle 14 of the present invention as described above.
A fire detector 22 is installed near the installation location for 1. The fire detector 22 is connected to the disaster prevention monitoring board 16 via a signal line 23. A motor 18 provided in the fire extinguishing water spray nozzle 14 is connected to the disaster prevention monitoring board 16 by a control line 21.

When the fire detector 22 gives a warning due to the occurrence of a fire, the disaster prevention monitor board 16 receives a warning signal from the fire detector 22, and when a fire is judged based on this warning signal, the disaster prevention monitor board is electrically driven. A control signal is output to the valve 13 to open the valve, and a scanning control signal is output to the motor 18 to output the motor 18
To rotate. Furthermore, the disaster prevention monitoring board 16 activates a fire pump of a sprinkler fire extinguishing facility (not shown) to supply pressurized water for fire extinguishing.

Therefore, the pressurized water supplied from the fire extinguishing pipe 12 is supplied to the nozzle main body 14A of the fire extinguisher sprinkling nozzle 14 via the electric valve 13, and the communication hole 1 of the rotary shaft portion 14M.
4H is fed to the head portion 14G, and the head portion 14G
Water is sprayed toward the protection range from the water spray holes 26 formed in one line. At this time, the head portion 14G is rotationally scanned by the motor 18 at a predetermined speed.

The water sprinkling patterns of the water sprinkled from the water sprinkling holes 26 of the head portion 14G are rod-shaped water sprinkling patterns 24a corresponding to the respective water sprinkling holes 26 and rod-shaped water sprinkling patterns 24a.
Water film sprinkling pattern 2 in which fine water droplets are scattered in the form of a mist
4b. Further, in the spraying pattern 24 formed by hitting the fire-extinguishing target surface in the protection range, spot-like spraying patterns 27 corresponding to the rod-like water-sprinkling patterns 24a are continuously arranged in a line, and the spot-like spraying pattern 27 hits the fire-extinguishing target surface. By scattering and flowing on the fire extinguishing target surface, a band-shaped scattering pattern 24 having a scattering region 28 that is spread and connected is formed.

FIG. 3 shows a watering pattern on the fire extinguishing surface in the protection range in the embodiment of FIG. Ceiling 1
Head part 14G of water spray nozzle 14 for extinguishing fire installed on the 1 side
The sprinkling pattern from the sprinkling holes is sprinkled on the fire-extinguishing target surface 30 in the protection range as shown by the sprinkling locus 29. For this reason, on the fire extinguishing target surface 30, spot-shaped spray patterns corresponding to the water spray holes provided in the head portion 14G are continuously arranged, and further, when hitting the fire extinguishing target surface, scatter or flow on the fire extinguishing target surface. Thus, the band-shaped spray pattern 24 is formed.

FIG. 4 is a plan view of the protection area of FIG. 3, in which a spot-shaped scattering pattern 27 is continuously arranged in a circular protection area 25, and a band-shaped scattering pattern 24 is formed in which the spot-shaped scattering patterns 27 are connected as scattering areas 28. It The belt-shaped spray pattern 24 rotates and scans the protection area 25 as indicated by an arrow B in accordance with the rotation of the head portion 14G driven by the motor 18, and sprays water over the entire protection area.

The scanning speed of the spray pattern needs to be relatively low so that the shape of the strip-shaped spray pattern can be maintained. In other words, when the number of rotations of the head portion is high, the lump-shaped rod-shaped watering pattern 24a sprinkled from the head portion is dispersed into a granular state, and spot-shaped water is sprayed intensively on a specific portion within the protection range. This is because it is no longer possible to form a spray pattern of, and naturally, a strip-shaped spray pattern cannot be formed.

FIG. 5 is an enlarged view of the portion A of the strip-shaped spray pattern 24 shown in FIG. The rod-shaped water sprinkling pattern from the head portion 14G enters the fire extinguishing target surface from the direction shown by the water sprinkling track 29 and hits it. The spraying range when hitting the fire-extinguishing target surface is the spot-shaped spraying pattern 27 indicated by diagonal lines. Spot-shaped spray pattern 2 hitting the fire-extinguishing target surface
7 forms a scattering area 28 that scatters and spreads in a substantially elliptical shape. In the scattering region 28, the interval L between the spot-shaped spray patterns 27 on the fire extinguishing target surface is set so that the spot-shaped spray patterns 27 adjacent to each other are connected to each other.

Here, the fire extinguisher nozzle 14 in FIG.
Assuming that the installation height of H is H and the radius of the protection area is r, the maximum legally required height is 2.7 m and the maximum effective water spray radius is 2.6 m. Therefore, H =
An interval L of the spot-shaped spray patterns 27 for forming the strip-shaped spray patterns 27 connected to the spot-shaped spray patterns 27 and the scattering areas 28 as shown in FIG. 5 under the condition of 2.7 m and r = 2.6 m is 30 cm. It becomes the following.

Therefore, in order to obtain the band-shaped spray pattern 24 as shown in FIG. 5, L = 30 cm on the surface to be extinguished.
As shown in FIG.
The intervals, water discharge directions, and hole diameters of the water spray holes 26 provided in the head portion 14G may be determined. Further, paying attention to the invasion angles θ1, θ2, θ3 of the water spray trajectory 29 when the conditions for forming the band-shaped spray pattern 24 by the spot-shaped spray pattern 27 in FIG. 5 are H = 2.7 m and r = 2.6 m. If the number of invasion angles between the water spray tracks 29 of the adjacent spot-shaped spray patterns 27 is 5 ° or less, the strip-shaped spray pattern 24 is formed. That is, when the difference between the penetration angle θ1 and the penetration angle θ2 is 5 degrees or less and the difference between the penetration angle θ2 and the penetration angle θ3 is 5 degrees or less, the band-shaped spray pattern 24 can be formed.

When the fire is completely extinguished by spraying water from the fire extinguisher nozzle 14, the disaster prevention monitoring board 16 receives a recovery signal from the fire detector 22, and the disaster prevention monitoring board 16 turns on the motor-operated valve 13 after a predetermined time required for extinguishing confirmation. A closing control signal may be output to close the motor 14, and at the same time, a scanning stop signal may be output to the motor 14 to stop the motor 14. Alternatively, a monitor may manually stop the motor 14.

FIG. 6 is a graph showing the change over time in the amount of water sprayed from one point within the protection range for the conventional example and the present invention. FIG. 6A shows the amount of water sprayed by a conventional water spray nozzle for fire extinguishing, which is a temporal change in which a constant amount of water is conventionally emitted when viewed from one point within the protection range. On the other hand, in the water sprinkling according to the present invention shown in FIG. 6 (B), the band-shaped spray pattern is formed by scanning by spraying water on a specific part within the protection range, so Seen from one place, a large amount of water is intermittently sprinkled.

Therefore, in the fire extinguisher sprinkler nozzle of the present invention, when viewed from a part having a protection range, a large amount of water is instantaneously sprinkled against the fire as compared with the conventional sprinkler nozzle, so that it is constant. A higher fire extinguishing ability is obtained in the present invention in which a large amount of water is sprinkled in a concentrated manner than in the conventional case in which the amount of water is continuously sprinkled. For this reason, when comparing the conventional radiation nozzle that emits radiation over the entire protective range of 80 liters / minute with the water spray nozzle of the present invention, which has a speed of about 1 rpm for scanning at 40 liters / minute, the amount of water is small in the entire protective range. Nevertheless, the present invention provides higher fire extinguishing ability.

On the other hand, when viewed from one position within the protection range, in the present invention, as compared with the conventional case where water is sprayed over the entire protection range, the amount of water sprayed increases instantaneously and at the same time the object to be extinguished Since the striking force and the particle size of the water hitting the water also increase, the fire extinguishing ability increases. That is, in the present invention, the water is not dispersed particles but is sprayed on a fire extinguishing object as a mass of water with a strong hitting force that is concentrated and sprayed on a specific part, so that the fire flow is not lost. The fire can be extinguished by reaching deeper areas, reducing the time required for fire suppression, and thus reducing the amount of water needed to extinguish the fire.

Further, in the present invention, when the water, which becomes a continuous spot-shaped spray pattern, hits the fire extinguishing target surface, it spreads and sticks to each other to form a continuous strip pattern. Since such a band-shaped spray pattern scans the entire protection range, it is possible to partition the place where the water within the protection range is extinguished by extinguishing the fire and the place where it is spraying from now on with the band-shaped spray pattern. , It is possible to extinguish the fire sooner without the part that was extinguished once again burning up.

FIG. 7 shows a strip-shaped spray pattern according to the present invention in comparison with a conventional one. FIG. 7C shows a conventional spraying pattern. In the conventional water spray nozzle, in order to spray water uniformly over the entire protection range, the water is dispersed by the deflector into particles, and the protection range 25 has a relatively small particle size. Spot-like spray patterns 76 of granular water having various small sizes are randomly formed.

For this reason, when the fire has a strong momentum, the dispersed water has a small particle size, and therefore loses the fire flow and the flame 72.
It evaporates before it reaches the deep part of the fire, it takes time to suppress the fire, and sometimes it cannot be extinguished at all. As a result, the amount of water increases and the damage caused by water loss increases. Further, when viewed from a certain point within the protection range 25, even if the granular flame of water momentarily weakens the flame 27 of the point, the flame 72 near that point evaporates the water once and the nearby flame Start burning again by. Therefore, it takes time to completely extinguish the fire.

FIGS. 7 (A) and 7 (B) show the sprinkling of the present invention,
A band-shaped spraying pattern 24 for discharging a large amount of water in a concentrated manner is formed in a certain portion within the protection area 25. For this reason, the amount of water sprayed increases instantaneously, and at the same time, the striking force and the particle size of the water hitting the fire extinguishing object increase, so that the fire extinguishing ability increases. That is, in the spray pattern 24 of the present invention, the water is as shown in FIG.
It is not dispersed like particles, but is sprinkled on a fire-extinguishing object as a lump of water with a strong hitting force in a specific part. For this reason, the fire 72 can reach the deep portion of the flame 72 without losing the flow of the fire and the fire extinguishing ability can be enhanced, and the time required for suppressing the fire can be shortened.

Further, as shown in FIG. 7 (B), the entire area within the protection area 25 is scanned by the band-shaped spray pattern 24 to extinguish the fire with the lump of water, so that the extinguishing portion 74 that has once extinguished is prevented from burning again. , Fire can be extinguished earlier. In addition, since the fire can be extinguished with a small amount of water discharged, damage due to water loss can be reduced. Also, since the amount of water discharged is small, the capacity of the water tank installed in the sprinkler fire extinguishing equipment can be reduced. In addition, if the fire extinguishing capacity is made equivalent to the conventional one, the water pressure of the fire extinguishing pipe can be lowered compared to the conventional one, so the pump capacity of the sprinkler fire extinguishing equipment can be made small, and the backup equipment such as private power generation equipment is also small accordingly. Since the cost can be reduced and the piping equipment can be reduced, the cost of the entire equipment can be sufficiently reduced.

Further, since the nozzle is formed so as to discharge a large amount of water to a certain portion within the protection range, even if the protection range is made larger than that of the conventional water spray nozzle, the scanning time is adjusted to cause a fire. On the other hand, a large amount of water can be discharged instantaneously, and a fire extinguishing capacity equal to or higher than the conventional one can be obtained. Therefore, the number of nozzles to be installed can be reduced as compared with the conventional water spray nozzle.

For example, in the present invention, the installation interval can be set to 2.6 m, as compared with the case where eight spray nozzles are installed in the protection area at intervals of 2.3 m in the related art. The number can be reduced to four. FIG. 8 shows another embodiment of the head portion 14G used in the fire extinguisher sprinkling nozzle 14 of FIG. 1, and shows the head portion 14G as viewed from below. In this embodiment, the head unit 1
The rows of the water spray holes 26a and the rows of the water spray holes 26b are arranged in two rows so as to be staggered from the center of the 4G hemisphere.

FIG. 9 is an explanatory view of the water spraying direction with respect to the fire extinguishing target surface 30 of the water spraying nozzle 14 for fire extinguishing provided with the head portion 14G of FIG. Sprinkling hole 26 formed in head portion 14G
Holes are formed in the row a so that the intersection P of the water discharge center line 32 with respect to the fire extinguishing target surface 30 forms a water discharge trajectory 29a in a direction obliquely extending from the right side. On the other hand, sprinkler hole 26b
On the side, the water discharge center line 32 and the fire extinguishing surface 30 are also the same.
A hole is formed so as to have a sprinkling orbit 29b in a direction diagonally from the left side to the point P with respect to the intersection P with.

FIG. 10 shows a spraying pattern by the head portion 14G of FIG. 9, which is one row in which the spraying holes 26a and the spot-shaped spraying patterns 27a and 27b of the spraying holes 26b in different rows are alternately arranged in a predetermined direction of the protection area 25. A spot-like spray pattern is formed. Then, the spot-shaped spray patterns 27a and 27b arranged alternately are connected by a scattering area 28 due to the spread when hitting the fire extinguishing target surface, and a band-shaped spray pattern 24 is formed.

FIG. 11 shows a part of the strip-shaped spraying pattern 24 on the fire extinguishing surface 30 shown in FIG. 9, in which the water spray tracks 29a, 29b formed by the water spray holes 26a, 26b arranged in two rows in the head portion 14G have different directions. From the fire extinguishing surface into the spot-shaped spray pattern 27a,
27b is formed. Spot-shaped spray patterns 27a, 2
Each of 7b forms a scattering area 28 by spreading by hitting the fire extinguishing target surface, and adjacent scattering areas 28 are connected to each other to form a strip-shaped scattering pattern 24.

The head portion 14G shown in FIGS.
The structure in which the water spray holes 26a and 26b are alternately formed in two rows is effective when the number of water spray holes to be provided in the head portion 14G is large. That is, although the number of holes that can be formed in the single row of water discharge holes 26 as shown in FIG. 2 is limited, the number of holes that can be formed can be increased by forming two rows as shown in FIG. When there are a large number of spot-shaped spray patterns for the head, the necessary water spray holes can be formed in the head portion 14G.

In FIG. 8, the case where the water spray holes are formed in two rows is taken as an example, but as many spray holes as necessary to obtain spot-shaped spray patterns aligned in a line in the protection area 25 are headed. In order to form the portion 14G, a plurality of arbitrary rows such as three rows and four rows may be formed,
Even if they are not aligned like a row, it is sufficient that the sprinkling pattern can be formed by arbitrarily setting the drilling of the water spray holes and finally by spreading the water spray by hitting the surface to be extinguished.

At this time, the distance between adjacent spot-shaped spray patterns 27 is preferably 30 cm or less. The spot-shaped spray patterns 27 do not have to be perfectly aligned in a line, and even if they are slightly deviated from each other, it is sufficient that they are in a substantially aligned state, as long as a strip-shaped spray pattern can be finally formed. FIG. 12 shows another embodiment of the head portion 14G used in the fire extinguishing water spray nozzle 14 of FIG. 1. In this embodiment, the head portion 14G has one or more spiral water spray holes 26 when viewed from below. Is formed.

FIG. 13 shows a swirl-shaped spraying pattern 33 of the protection range 25 by the spiral water-spraying holes 26 in FIG. 12, and the swirl-shaped spraying pattern 33 corresponds to the spraying holes 26 in FIG. A single swirl-scattering pattern 33 in which the scattered areas spread around are continuously connected in a spiral shape.
Is formed. Since the head portion 14G is rotationally scanned in the direction of the arrow, the spiral spray pattern 33 also rotates within the protective area 25, and this rotational scanning causes the protective area 2 to be rotated.
Water can be sprayed over the entire area of 5.

The arrangement of the water spray holes of the head portion 14G used in the fire extinguisher water spray nozzle of the present invention is an appropriate spray pattern as long as a continuous strip-shaped spray pattern can be formed from the center of the protection area 25 to the outer periphery with one stroke. It includes the shape of. Further, a plurality of spray patterns having the radial length of the protection area 25 shown in FIG. 4 may be provided, or a spray pattern having the diameter length of the protection area 25 may be provided, or a combination thereof may be used. FIG. 14 shows another embodiment of the present invention. This embodiment is characterized in that the scanning unit is arranged separately from the nozzle body.

In FIG. 14, a fire extinguisher sprinkling nozzle 14A is provided.
A head portion 14G is rotatably attached to the lower portion of the nozzle body 14A. That is, the flange-shaped rotary shaft portion 80 is
It is rotatably attached via a ring 78. A plurality of water spray holes 26 are formed in the head portion 14G in a spiral shape as shown in FIG. The motor 18 serving as a scanning unit is installed outside the nozzle body 14A. Head part 14G
A pulley 82 is integrally formed on the upper part of the belt, and a belt 86 is wound around the pulley 84 provided on the rotation shaft of the motor 18. In this way, the motor 18 forming the scanning unit may be arranged separately from the nozzle body 14A. The other configuration is the same as that of the embodiment of FIG. In addition to the belt mechanism, an appropriate drive transmission mechanism can be used to transmit the scanning rotation from the motor 18 to the head portion 14G.

[0047]

As described above, according to the present invention, a plurality of spot-like spray patterns are continuously arranged on the fire-extinguishing target surface within the protection range, and each spot-like spray pattern hits the fire-extinguishing target surface. When sprayed, water is sprayed so that it spreads and sticks to each other to form a band-shaped spray pattern.
Since this band-shaped spray pattern is scanned and water is sprayed over the entire protection area, it can be sprayed as a spot-like mass of water with a strong hitting force in a specific part of the protection area, and reaches the deep part of the fire without losing the fire flow. As a result, the fire extinguishing ability becomes high, and the time until the fire is suppressed can be shortened. Therefore, the amount of water until the fire is extinguished can be reduced, and damage to water damage can be reduced.

Further, according to the present invention, since the spray pattern spread in the form of a band is scanned within the protective range, a spot where water is extinguished by sprinkling water within the protective region and a place where the water is being sprinkled are scattered. It is possible to partition in a pattern, and as a result, it is possible to extinguish the fire earlier because the part that has once extinguished is prevented from burning again. Furthermore, if the fire extinguishing capacity is equivalent to that of the conventional water spray nozzle, the water pressure of the fire extinguishing pipe can be suppressed, the water tank, pump, etc. of the sprinkler fire extinguishing equipment can have a small capacity, and the pipe size can be reduced, resulting in equipment cost reduction. It can be reduced.

Furthermore, since a swath-like spraying pattern for intensively spraying water on a certain portion within the protection range is formed to scan within the protection range, even if the protection range is made wider than the conventional one, the same extinguishing ability as the conventional one is extinguished. Can be maintained, and as a result, the number of nozzles to be installed can be reduced and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a water spray nozzle for extinguishing a fire of the present invention together with sprinkler fire extinguishing equipment.

FIG. 2 is an explanatory view of water spray holes provided in the head portion of FIG.

FIG. 3 is an explanatory view of a spraying pattern by the water spray nozzle for extinguishing a fire of FIG.

FIG. 4 is a plan view of a band-shaped spraying pattern using the water spray holes of FIG.

5 is a detailed explanatory view of the band-shaped spray pattern of FIG.

FIG. 6 is a graph showing the amount of water sprayed according to the present invention as seen from a part within the protection range, in comparison with the conventional amount.

FIG. 7 is an explanatory view showing how a fire is extinguished by the band-shaped spraying pattern of the present invention in comparison with a conventional example.

FIG. 8 is an explanatory view of another embodiment of the fire extinguisher nozzle of the present invention in which the water spray holes are arranged in two rows.

FIG. 9 is an explanatory diagram of a watering direction by the watering holes of FIG.

10 is an explanatory diagram of a band-shaped spray pattern by the head portion of FIG.

11 is a detailed explanatory diagram of the band-shaped spray pattern of FIG.

FIG. 12 is an explanatory view of another embodiment of the water spray nozzle for extinguishing a fire of the present invention in which the water spray holes are spiral.

FIG. 13 is an explanatory diagram of a spray pattern by the head portion of FIG.

FIG. 14 is an explanatory diagram of another embodiment of the present invention in which a scanning unit is separately arranged with respect to a nozzle body.

FIG. 15 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

 14: Fire extinguisher nozzle 14A: Nozzle body 14G: Head part 16: Disaster prevention monitoring board 18: Motor 22: Fire detector 24: Band-shaped spray pattern 25: Protected area 26, 26a, 26b: Water spray hole 27: Spot-shaped spray pattern 28: Scattering area 29, 29a, 29b: Sprinkling track 33: Spiral spray pattern

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B05B 1/14 B05B 1/14 Z

Claims (9)

[Claims] 1. A sprinkling method for a fixed-type fire extinguishing system, wherein a fire extinguisher sprinkling nozzle connected to a fire extinguishing pipe sprinkles a fire extinguisher liquid or water for extinguishing water in a predetermined protection range in case of a fire. A plurality of spot-shaped spray patterns are arranged in a row from the water spray nozzle to the specific fire-extinguishing target surface within the predetermined protection range, and when each spot-shaped spray pattern hits the fire-extinguishing target surface, they stick to each other to form a strip-shaped spray pattern. A method for watering fixed fire extinguishing equipment, comprising: sprinkling water in a concentrated manner to form a pattern, scanning the band-shaped spraying pattern within the protection area, and spraying water over the entire area of the predetermined protection area. 2. The method of spraying fixed fire extinguishing equipment according to claim 1, wherein the continuous spot-shaped spray pattern comprises:
A method for sprinkling fixed fire extinguishing equipment, which comprises sprinkling water so that the distance between adjacent spray patterns is approximately 30 cm or less. 3. The water spray method for a fixed-type fire extinguishing facility according to claim 1, wherein the angle difference between adjacent advancing angles of the spot-shaped spray pattern that hits the fire-extinguishing target surface is approximately 5 degrees or less. A method for sprinkling fixed fire extinguishing equipment, characterized by sprinkling water over the water. 4. A fire extinguisher spray nozzle of a fixed fire extinguishing facility, which is connected to a fire extinguisher pipe to which fire extinguishing liquid or water for extinguishing water is pumped, and sprays the fire extinguisher liquid or water for extinguishing water within a predetermined protection range in case of fire. On a specific fire-extinguishing target surface, a plurality of spot-shaped spray patterns are continuously arranged, and when each spot-shaped spray pattern hits the fire-extinguishing target surface, they stick to each other to form a band-shaped spray pattern. A fire extinguisher sprinkling nozzle, comprising: a head section for intensively sprinkling water; and a scanning section for scanning the head section to sprinkle the strip-shaped spray pattern over the entire area within the protection range. 5. The water spray nozzle for extinguishing fire according to claim 4, wherein the continuous spot-shaped spray patterns have a plurality of spray holes in the head portion so that the intervals between adjacent spray patterns are approximately 30 cm or less. A water spray nozzle for extinguishing fire. 6. The water spray nozzle for extinguishing a fire according to claim 5, wherein the angle difference between adjacent advancing angles of the spot-shaped spray pattern hitting the surface to be extinguished is approximately 5 degrees or less. A water spray nozzle for extinguishing a fire, characterized in that a plurality of water spray holes are provided in its part. 7. The fire extinguisher water spray nozzle according to any one of claims 4 to 6, wherein the strip-shaped spray pattern is a spray pattern in which water is sprayed from at least the center to the outer peripheral portion of the protection area. Water spray nozzle for fire extinguishing. 8. The fire extinguisher nozzle according to claim 7, wherein the strip-shaped spraying pattern has a spiral shape that sprinkles water from the vicinity of the center of the protection area to the outer peripheral surface. . 9. The fire extinguisher water spray nozzle according to any one of claims 4 to 6, wherein the head portion is provided with an opening direction such that spotted spray patterns are continuously arranged on a fire extinguishing target surface in a protection range. A fire extinguisher nozzle, which is provided with a plurality of water spray holes set appropriately.