JPH0566188B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a water spray head used for extinguishing fires, cooling, etc., and particularly relates to a water spray head with a rectangular water spray pattern.

BACKGROUND ART Conventionally, as a water spray head of this type, there is one in which a deflector having radial slits is provided below a water outlet of the head body, and the pressurized water discharged from the water outlet collides with the deflector and is spread.

Problems to be Solved by the Invention In conventional water sprinkling heads, the deflector is disc-shaped, so the shape of water sprinkling on the sprinkling surface (referred to as a sprinkling pattern) is circular or elliptical.

Therefore, on the watering surface 1 shown by the dashed-dotted line in Fig. 8,
When watering is attempted with a plurality of watering heads 2, overlapping watering portions 3 are generated by the two watering heads 2, and water is also sprayed 4 on areas other than the watering surface 1, resulting in much waste. Therefore, in order to completely spray water over the entire surface, a large number of water spray heads are required.

Moreover, since the area directly below the deflector is only sprayed in a streak-like manner by water falling vertically from the slit, the water spray surface directly below the deflector is not uniformly sprayed with water.

In view of the above circumstances, the present invention aims to provide a watering head that can efficiently spray water on a watering surface with a small number of watering heads.

Another purpose is to uniformly water the watering surface.

Means for Solving the Problems The present invention provides a downward direction for controlling the width of the upper plate part and the spraying of extinguishing/cooling liquid by bending the plate body below the water outlet of the head body so that it has a trapezoidal shape when viewed from the side. A pair of inclined plates are formed, and a pair of slits are provided on both ends of the upper plate in the longitudinal direction to form a pair of tongue pieces, and the pair of tongue pieces regulates the length of watering. In order to do this, a deflector is provided which is inclined downward, and a cone body is provided at the center of the upper surface of the upper plate portion of the deflector to separate the extinguishing and cooling liquid discharged from the water outlet and cause it to collide with the deflector. This is a water sprinkler head that is characterized by:

Function Pressurized water released from the water outlet collides with the cone body, is separated from its surface, and then hits the deflector. And some of the water that hits this deflector is
It scatters obliquely downward along the inclined plate and tongue, but
At this time, the width of the water spray is regulated by the inclined plate, and the length of the water spray is regulated by the tongue piece, so that a rectangular far water spray area is formed as a whole. On the other hand, other water falls through the slit or is reflected by hitting the slit wall surface, and its spraying direction is changed and dispersed under the deflector to form a nearby spraying area.

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

The water spray head body 10 has a U-shaped frame 12.
is suspended, and a deflector 20 facing the water outlet 11 is provided on the upper surface of the frame 12.

This deflector 20 includes a rectangular upper plate portion 2.
1, an inclination angle 24 for regulating the width of spraying of fire extinguishing/cooling liquid, a slit 22 for spraying water in the vicinity of the water spraying area directly below the deflector 20, and a tongue piece 23 for regulating the length of water spraying. There is.

The inclined plate 24 is provided continuously on both long sides of the upper plate part 21 and is inclined downward at a larger angle than the tongue piece 23.

A pair of slits 22 are provided on both short sides of the upper plate portion 21, and the tongue piece 23 is formed by a pair of slits 22 on the upper plate portion 21, and is slightly inclined downward.

A cone body 30 is provided in the center of the deflector 20 to peel off the extinguishing/cooling liquid discharged from the water outlet 11 and cause it to collide with the deflector 20.

This cone body 30 has an upper truncated conical portion 3
1 and a lower cylindrical portion 32, this shape may also be cylindrical.

In addition, in the figure, F is a plate, 40 is a spacer,
Arrows indicate the direction of watering.

The operation of this embodiment will be explained. Water outlet 1
When the pressurized water released from 1 collides with the cone body 30 and is reflected, it hits the cylindrical part 32 of the cone body 30.
The pressure water separates from the surface of the cylinder, and a cavity E is created between the pressure water and the cylinder surface.

Then, the separated pressure water hits the deflector 20, a part of which flows along the inclined plate 24, and scatters far away while the width of the sprayed water is regulated by the inclined plate 24, and flows along the tongue piece 23. 23
The water is scattered far away while the length of the water sprinkling is regulated by this, and the water is uniformly sprinkled in the rectangular far watering area A.

On the other hand, the other separated pressure water falls into the slit 22, and some of it falls along the slit 22 and is sprayed in a striped manner in the nearby watering area B, but the rest falls on the inner wall surface 22a of the slit. The water collides and is reflected, the direction of water spraying is changed and the water is dispersed, and water is uniformly sprayed on the nearby water spray area B directly under the deflector 20.

In this way, the entire rectangular water sprinkling area C is uniformly watered.

Effects of the Invention Since the present invention is configured as described above, the pressure water discharged from the water discharge port collides with the cone body, peels off from the surface of the cone body, and hits the deflector.

A part of the pressure water that hits the deflector forms a rectangular far-sprayed area while the width of the water spray is regulated by the inclined plate and the length of the water spray is regulated by the tongue piece. The water collides with the inner wall surface of the slit and is reflected, the direction of the water spray is changed and the water is uniformly distributed in the vicinity of the water spray area below the deflector.

In this way, it is possible to form a uniform rectangular watering area, so even if multiple watering heads are arranged at intervals, there is no need to overlapping watering areas or sprinkling water on areas other than the watering surface as in the conventional case. It will never occur.

Therefore, the water sprinkling surface can be efficiently and uniformly sprayed with water using a smaller number of water spray heads than in the conventional example.

[Brief explanation of the drawing]

1 to 4 are views showing an embodiment of the present invention, in which FIG. 1 is a front view, FIG. 2 is a side view, FIG. 3 is a plan view of the deflector, and FIG. 4 is a side view, and FIG. Figure 5~
FIG. 7 is a diagram showing the direction and state of water sprinkling of pressurized water, and FIG. 8 is a diagram showing a conventional water sprinkling state. 10...Head body, 11...Water outlet, 20
... Deflector, 21 ... Upper plate part, 22 ... Slit, 23 ... Tongue piece, 24 ... Inclined plate, 30 ...
Cone body, F... plate body.

Claims (1)

[Scope of Claims] 1. A pair of downwardly slanted plates below the water outlet of the head main body, which are bent so as to have a trapezoidal shape when viewed from the side, to regulate the width of the upper plate and the spraying of the fire-extinguishing cooling liquid. At the same time, a pair of slits are provided at each end of the upper plate in the longitudinal direction to form a pair of tongues, and the pair of tongues are arranged downwardly in order to regulate the length of watering. A tilted deflector is provided, and a cone body is provided at the center of the upper surface of the upper plate portion of the deflector to separate the extinguishing and cooling liquid discharged from the water outlet and cause it to collide with the deflector. watering head. 2. The water spray head according to claim 1, wherein the cone body has a truncated conical upper part and a cylindrical lower part.