KR100609722B1 - Multiple impingement spray nozzle - Google Patents

Abstract

The present invention relates to a multi-impact spray nozzle to form a droplet of a small size to increase the surface area to extinguish the fire quickly during the fire extinguishing. The multi-impact spray nozzle has a supply pipe for supplying water, and screwed to the supply pipe and has at least two or more diverging channels, the direction of travel at the end of the diverging channels toward the outside, respectively, in a position where the spray droplets do not collide. A nozzle body having a communication hole formed therein, a socket hermetically coupled to the communication hole of the nozzle body, and a gas tightly coupled to the socket so as to form a predetermined pressurized space, and directly spraying in the space to form a droplet having a predetermined size toward the outside. Multiple nozzle head portion having a nozzle for injecting the nozzle and the direct injection type pressure portion disposed in the space of the nozzle head portion in contact with the nozzle head side of the nozzle head portion to pressurize the fire extinguishing water to a high pressure of 60 bar or more to induce direct injection In the impingement spray nozzle, the inner surface center of the bottom diameter at the bottom of the nozzle body A slant toward and; A communication hole formed in the inclined surface with the branched channel formed at least two or more in the inner surface of the nozzle body inclined toward the inner side thereof; It is collided at a collision position spaced a predetermined distance from the communication hole by the communication hole inclined so that the traveling direction of the spray droplets directly injected through the injection hole of the direct injection type pressurization portion and the nozzle head portion provided inside the socket cross each other. It is characterized by the formation of uniform droplet distribution, relatively small droplets, and an enlarged spray angle. This allows the direct injection droplets to collide with each other at high pressures, leading to the generation of more wider and smaller droplets, thereby rapidly extinguishing the fire spread over a wider area, thus preventing safety and property damage. A multi-impact spray nozzle is provided that can be ensured.

Multiple, Collision, Atomized, Nozzle, High Pressure, SMDM

Description

Multiple impingement spray nozzle

1 is a longitudinal sectional view showing a multiple impingement spray nozzle according to the present invention,

2 is a bottom view of a nozzle head separated from a multiple impact spray nozzle according to the present invention;

Figure 3 is an exploded perspective view showing a direct injection nozzle head according to the present invention,

4 is a plan view in a state in which the direct injection nozzle head according to the present invention is assembled.

Explanation of symbols on the main parts of the drawing

One ; Nozzle body 2; Divergence

3; Socket 4; Communicator

5; Nozzle head 6; Nozzle

7; Direct injection type press part 8; Pressurized space

14; No. 15; prefecture

17; Pressurized flow path surface 18; Home office

19; Home

The present invention relates to a multi-impact spray nozzle, and more particularly, to a multi-impact spray nozzle to form a small droplet size to increase the surface area to extinguish the fire quickly in the event of fire extinguishing.

In general, when a fire occurs, a sprinkler installed in a building ceiling or the like performs fire suppression by supplying a large amount of water almost evenly for the purpose of physical extinguishing to lower the temperature of the fire caused by the fire.

Such a conventional sprinkler is formed with a waterproof port for water outflow to the head body, there is a support frame having a large strength of two stems corresponding to a part of the head body, the end of the support frame is waterproof when opening the sprinkler head The reflector (Deflector) is dispersed to disperse the water, and by tightening the bolt in the center of the reflector, the entire heat-sensitive portion is strongly adhered to the spout of the sprinkler head.
In the center portion of the heat sensing unit where a plurality of metals are assembled, a molten metal is embedded, and when the molten metal melts due to fire in a fire, the balance of forces between the assembling metals constituting the heat sensing unit is broken. It is configured to open the sprinkler head by being disassembled or removed from the head body.

However, the conventional sprinkler such as a baby supplies a large amount of water and rapidly lowers the temperature of the fire to extinguish the fire. Therefore, it is not possible to protect expensive electronic equipment in a space equipped with high-performance electronic equipment. There is a problem that causes loss.

In addition, when the temperature of the fire is very high, it is difficult to extinguish the fire with the water provided by the sprinkler, and thus there is a problem that the initial suppression is not possible. There is a difficult problem.

In order to solve such a problem, the applicant filed a swirl nozzle (10-2002-26262) on May 13, 2002, and the hybrid nozzle (10-2002-26163) on May 12, 2002. In the event of a fire, they can inject a myriad of spray droplets to cut off the air supplied to the flame, and thus quickly perform initial suppression, and almost completely protect expensive and high-performance electronic equipment and devices.

By the way, the above conventional techniques have a strong effect in the early stage of the fire, but in the case of wide and high space, the fire scene is wide and the fire temperature is so high that the spray droplets cannot penetrate the flame. Since only the enemy evaporation occurs, there is a problem that almost impossible to extinguish the fire.
On the other hand, registered utility model No. 0370005 filed as a means for solving the above problems is a nozzle body formed with a plurality of communication holes; A socket coupled to the communication hole; It proposes a configuration including a vortex pressurizing unit and a direct injection pressurizing unit causing any one of vortex and direct injection in the inner space, but this is a socket coupled to the communication hole of the nozzle body and a vortex pressurizing unit and a direct injection type provided inside the socket. The pressurizing section only allows the vortex or direct injection to be sprayed and the effect thereof, and it is not possible to induce more wider and smaller droplets to quickly extinguish a fire spread over a larger area. There is a problem.

Accordingly, an object of the present invention is to solve the above-mentioned conventional problems, and to direct the direct injection droplets at high pressure to induce more wider and smaller droplets to be generated more wide area flame It is to provide a multi-impact spray nozzle that can quickly extinguish.

The object is, according to the present invention, the supply pipe for supplying water, and screwed with the supply pipe has at least two or more branch channels, the direction of travel at the end of the branch channel to the outside and the spray droplets do not collide A nozzle body in which communication holes are formed in a non-positioned position, a socket that is hermetically coupled to the communication hole of the nozzle body, and an airtight coupling to the socket so as to form a predetermined pressurized space, and direct injection in the space causes a predetermined direction toward the outside. Direct injection type pressurization having a nozzle head portion having a jet port for ejecting droplets of a size, and contacting the nozzle head side of the nozzle head portion in the space of the nozzle head portion to press the fire extinguishing water to a high pressure of 60 bar or more to induce direct injection. In the multi-impact spray nozzle consisting of a portion, the inner surface of the bottom diameter at the bottom of the nozzle body An inclined surface formed toward the center; A communication hole formed in the inclined surface with the branched channel formed at least two or more in the inner surface of the nozzle body inclined toward the inner side thereof; It is collided at a collision position spaced a predetermined distance from the communication hole by the communication hole inclined so that the traveling direction of the spray droplets directly injected through the injection hole of the direct injection type pressurization portion and the nozzle head portion provided inside the socket cross each other. It is achieved by a multi-impact spray nozzle characterized by forming a uniform droplet distribution, relatively small droplets and an enlarged spray angle.

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Hereinafter, with reference to the accompanying drawings will be described in detail a multi-impact spray nozzle according to the present invention.
1 is a longitudinal cross-sectional view showing a multi-impact spray nozzle according to the present invention, Figure 2 is a bottom view of the nozzle head is separated from the multi-impact spray nozzle according to the present invention, Figure 3 is a direct injection nozzle according to the present invention 4 is an exploded perspective view showing a head, and FIG. 4 is a plan view in a state in which the direct injection nozzle head according to the present invention is assembled.

Multi-impact spray nozzle according to the present invention, as shown in Figure 1, is hermetically coupled to the supply pipe (not shown) for supplying the fire extinguishing water from the source. That is, it has the nozzle main body 1, the socket 3, the nozzle head part 5, and the direct injection type | mold press part 7.

The nozzle body 1 having the inclined surface 20 formed from the bottom portion toward the inner surface center of the bottom diameter is screw-coupled with the supply pipe so that at least two or more diverging channels 2 are formed to have a mutually symmetrical inclination and the diverging channels 2 The terminal direction is inclined inward and the communication hole 4 is formed in the inclined surface 20. In other words, since the communication hole 4 at the end of the branch channel 2 is formed in the inclined surface 20, the traveling directions collide with each other at a predetermined collision position.
As shown in Fig. 2, at least two or more communication holes 4 are arranged at equal angular intervals and are formed toward one collision position.

The socket 3 is for fastening the nozzle head portion 5 and is hermetically coupled to the communication hole 4, and the nozzle head portion 5 has a predetermined pressing space 8, and the pressing space 8 Has an injection hole 6 for spraying to the outside. Here, the injection port 6 injects droplets having a spray droplet size SMD of not more than 70 micrometers (μm).

On the other hand, the pressurized space 8 of the nozzle head portion 5 coupled to the plurality of sockets 3 located on the circumferential surface of the nozzle body 1 among the plurality of nozzle head portions 5 is shown in FIGS. 3 and 4. As described above, a direct injection type pressurizing portion 7 for pressurizing the fire extinguishing water to be formed at a high pressure of 60 bar or more, and at the same time, inducing direct injection toward the lower side is accommodated.
The direct injection pressurizing portion 7 has an arc body 14 having a predetermined circumferential angle and a pressing body 15 formed at a predetermined length by repeating at least one or more times in a space formed in the nozzle head portion 5, It has a pressurized flow path surface 17 inclined in the upper and lower narrow shape along the longitudinal direction of the pressing body string 15, and has a direct injection groove 18 recessed in the center of the lower end of the pressing body and circulated with the injection hole (6). And a guide groove 19 for guiding the pressurized water between the direct injection groove 18 and the pressurized flow path surface 17.

As described above, the liquid sprayed through the multi-impact spray nozzle according to the present invention is divided by the instability of the liquid surface generated by the interaction with the surrounding gas to form small droplets. This process is called aerodynamic atomization.

Such droplets are decomposed into finer spray droplets by the atomization effect caused by droplet collisions when the sprays sprayed from two or more nozzle heads 5 collide with each other.

Here, the collision position of the droplets is spaced apart by the collision distance (S) from the injection port 6 to the impact point (I), the collision distance (S) is 20 ~ 50mm. In addition, when the droplets collide, the ideal collision angle θ is preferably made between 40 and 150 degrees.

In this case, when the collision occurs, the shape of the spray cross section is formed in the dimensional form in the case of a double collision, and in the form of a circle in the case of a triple collision. The spraying speed of the spray droplets according to the impingement angle is 35m / s ~ 45m / s at 40 ~ 70 °, 25m / s ~ 35m / s at 70 ~ 100 ° and below 25m / s at 100 ~ 150 °. The average SMD according to the collision distance (S) is 40 to 60 μm at 20 mm and 40 μm at 50 m (only 60 to 80 bar).

As described above, according to the present invention, the direct injection droplets collide with each other at a high pressure to induce more and smaller droplets to be produced, thereby rapidly extinguishing the fire spread over a wider area, thereby reducing life and property damage. It is effective in securing safety by preventing it in advance, and by forming a wider spray angle and spraying to distribute droplets of uniform size, the surface area of the entire droplet is increased to suppress fires in a large area at the same time. It can be effective.

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Claims (2)

Nozzle having a supply pipe for supplying water and screwed to the supply pipe and having at least two or more ditches, the communication direction is formed at the end of the ditches to the outside direction and the spray droplets do not collide with each other. A main body, a socket that is hermetically coupled to the communication hole of the nozzle body, and an injection hole that is hermetically coupled to the socket to form a predetermined pressurized space and causes direct injection in the space to spray droplets of a predetermined size toward the outside. In the multi-impact spray nozzle consisting of a nozzle head portion and a direct injection type pressurizing portion which is disposed in the space of the nozzle head portion and in contact with the injection port side of the nozzle head portion to pressurize the fire extinguishing water to a high pressure of 60 bar or more to induce direct injection. An inclined surface formed from the bottom of the nozzle body toward the inner surface center of the bottom diameter; A communication hole formed in the inclined surface with the branched channel formed at least two or more in the inner surface of the nozzle body inclined toward the inner side thereof; It is collided at a collision position spaced a predetermined distance from the communication hole by the communication hole inclined so that the traveling direction of the spray droplets directly injected through the injection hole of the direct injection type pressurization portion and the nozzle head portion provided inside the socket cross each other. A multi-impact spray nozzle comprising uniform droplet distribution, relatively small droplets, and an enlarged spray angle. delete

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