JPH0340363Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a water spray head for fire extinguishing or cooling.

Conventional technology Conventionally, as a water spray head for fire extinguishing or cooling LNG tanks, etc., a disc-shaped deflector with a slit supported through a frame is provided at a position opposite to a water outlet, and water is discharged from the outlet to the deflector. There are some types that collide with pressurized water to spray water or extinguishing agent over a wide area.

Problems to be Solved by the Invention Since the water outlet of the conventional water spray head has a relatively small diameter, a large number of water spray heads are required to spray a large amount of water.

Therefore, when the diameter of the water outlet is made larger than the conventional one, so-called large diameter, and a large amount of water is sprayed, the pressure water released from the water outlet hits the deflector and is sprayed while sliding on it. , the area directly below the deflector is only sprayed in streaks by water falling from the slit. Therefore,
It is not possible to uniformly water the entire watering area.

In view of the above-mentioned circumstances, the object of this invention is to provide a water sprinkling head capable of sprinkling a large amount of water.

Another purpose is to prevent the formation of an anhydrous region directly beneath the deflector.

Means for Solving the Problem This invention has a disc-shaped flat part interposed in the frame at a position facing the water spout, a flange bent diagonally downward at its periphery, and radial slits. The water spray head is characterized in that a deflector is supported, and a protruding part consisting of a cylindrical body or a cylindrical body and a truncated cone is provided on a flat part of the deflector.

Function The pressurized water released from the water outlet collides with the protrusion, peels off from its surface, hits the deflector, flows down along the flange, and scatters far away. At this time, the separated water is also supplied to the slit, but some of it falls along the slit wall, and the rest is reflected against the slit wall, changing the direction of water spraying and touching the flange. distributed below.

Embodiment An embodiment of this invention will be described with reference to the accompanying drawings, in which the same reference numerals have the same names and functions.

A U-shaped frame 3 is suspended from the head body 1, and a deflector 4 is provided on the upper surface of a lower end portion 10 of the frame 3.

This deflector 4 includes a disk-shaped flat part 41,
It is composed of a flange 42, a slit 43, and a mounting hole 44.

The flange portion 42 is bent diagonally downward at the periphery of the flat portion to form a radiation angle θ, and by changing this radiation angle θ, the water spraying range is adjusted. The connecting portion 4J of the flange portion 42 is formed relatively wide in order to increase the strength of the deflector 4.

The slits 43 are provided for sprinkling water directly below the deflector, and are formed radially in the flange 42.

The flat part 41 is provided with a protruding part 5 that causes pressure water from the water outlet to collide with it and cause it to peel off from the surface, a so-called peeling phenomenon.

As shown in FIG. 5, the protrusion 5 is composed of a truncated cone 51, a cylinder 52, and a mounting screw 53, but it may also be composed of a cylinder 52 and a mounting screw 53.

Note that 2 is a water outlet with a larger diameter than the conventional one, for example, 20 mm in diameter, 6 is a spacer, and the arrow indicates the direction of water spraying.

Next, the operation of this embodiment will be explained.

A large amount of pressurized water released from the water outlet 2 collides with the protrusion 5 and is reflected, causing the cylinder 52 of the protrusion 5 to
The cylinder peels off from the surface, and a cavity E is created between the pressure water and the cylindrical surface.

The separated pressure water then hits the deflector 4, flows down in the direction of arrow A1 along the surface of the flange 42, scatters far away, and falls into the far watering area.

At this time, the separated pressure water is also supplied to the slit 43, but a part of it falls along the wall surface 43a of the slit 43 as shown by arrow A2, and forms a streak in the vicinity of the water spray area directly under the deflector. As the water is being sprayed, the remaining water collides with the wall surface 43a of the slit 43 and is reflected as shown by arrow A3, the direction of the water spraying is changed, and the water is dispersed directly below the flange 42.

In this way, all nearby watering areas are uniformly watered.

Effects of the invention Since this invention is configured as described above, the pressure water discharged from the water outlet collides with the protrusion, peels off from the surface of the protrusion, hits the deflector, and is sprayed over a wide area.

At this time, the separated pressure water is also supplied to the slit, but part of it falls along the wall of the slit, and the rest hits the wall of the slit and is reflected.
Since the water is distributed directly below the flange, the entire nearby water spray area directly below the deflector is uniformly sprayed with water.

Therefore, even if the diameter of the water outlet is made larger than the conventional one and the flow rate is large, the entire watering area can be uniformly watered.

[Brief explanation of the drawing]

Figures 1 to 5 are diagrams showing an embodiment of this invention, in which Figure 1 is a partially sectional front view, Figure 2 is a plan view, Figure 3 is a plan view of the deflector, and Figure 4 is a front view of the deflector. FIG. 5 is a partially cross-sectional front view of the deflector, and FIG. 5 is a front view of the protrusion. Moreover, FIGS. 6 and 7 are views showing the watering state, FIG. 6 is a partially sectional front view, and FIG. 7 is an enlarged view showing a part of the - line sectional view of FIG. 6. . 2...Water outlet, 3...Frame, 4...Deflector, 5...Protrusion.

Claims (1)

[Scope of utility model registration request] At a position facing the water outlet, a deflector is supported via a frame, and includes a disc-shaped flat part, a flange bent diagonally downward at its periphery, and radial slits. , a water spray head characterized in that it is provided with a protrusion consisting of a cylinder, or a cylinder and a truncated cone.