JPH0311016Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a sprinkler head that operates to extinguish fires when a fire occurs.

Sprinklers have a great ability to extinguish a fire in the event of a fire, and they are required to be installed in buildings used by the public.

There are several types of sprinkler heads, but in all of them, the fire temperature melts the support for the valve that closes the waterway, opening the valve and allowing pressurized water to collide with the sprinkler plate, causing the water to bounce back and form a spray. It is designed to extinguish the fire by spraying water in all directions.

However, with the above structure, maintaining the direction of spray water and spraying an appropriate amount of water is not always as desired, and moreover, the pressure water is sprayed by bouncing, so the pressure water is also attenuated by the collision energy, and it spreads over a wide area. There is a problem in that it is difficult to obtain water spray over a wide area, and the fire extinguishing ability is reduced accordingly.

Furthermore, since it is structurally difficult to spray water upward, it is impossible to extinguish fires on the ceiling.

This idea was made to solve the above problems, and it can spray water uniformly over a wide area without reducing the pressure of the pressurized water, making it possible to spray water even on ceilings and distant locations. The purpose is to provide a sprinkler head with excellent fire extinguishing ability.

The structure of this device is that a valve mechanism is installed in the pressure water passage provided in the head body to shut off the passage and open it when heat is sensed, and a water sprinkling pot whose inside can communicate with the passage is rotatably attached to the head body. , a large number of water sprinkling holes are provided on the peripheral wall of the water sprinkling pot so that the water sprinkling pot rotates due to the reaction force when water is sprayed with pressure water, and the valve mechanism is connected to a rod shaft that passes through the water sprinkling pot when it is in the open position. A flow channel is provided for water to flow out to the outside, and a sounding mechanism is provided in the part of the water flow channel that faces the outside of the watering pot when it is in the open position, and generates sound by sucking air with the passing water flow. This is what I did.

This invention will be explained below based on the embodiments shown in the accompanying drawings.

Figures 1 to 4 show a first example of this invention, in which a head body 3 is provided with a mounting portion 2 that is threadedly connected to the water supply pipe 1, and a passage 4 communicating with the water supply pipe 1 is vertically connected to the head body 3. This head body 3 is provided so as to penetrate therethrough.
A cylinder shaft 5 communicating with the passage 4 is attached in a watertight manner to the lower part of the cylinder.

A water sprinkling pot 6 formed into a hollow spherical shape is rotatably attached to the cylinder shaft 5. This watering pot 6 is externally fitted so that the small diameter part 7 at the upper end can rotate freely with respect to the cylinder shaft 5, and the inside of the spherical part 8 connected to the lower end of this small diameter part 7 passes through the inside of the cylinder shaft 5 into the passageway 5. It is formed so that it can communicate with the

The spherical portion 8 of the water sprinkling pot 6 is provided with a large number of water sprinkling holes 9 on its peripheral wall.
The pressure water flowing inside is spouted out from each water sprinkling hole 9.

The water sprinkling hole 9 provided in this spherical part 8 is a particulate water sprinkling hole 9a provided on the floor surface in the lower half of the spherical part 8.
, a water stripe watering hole 9b provided on the upper part of the spherical part 8 to the ceiling, and a rotating watering hole 9c provided around the middle part of the spherical part 8, and the rotating watering hole 9c is the fourth one.
As shown in the figure, it is provided in an inclined manner with respect to the center of the spherical portion 8, and the water sprinkling pot 6 is rotated by the reaction force of the pressurized water jetted to the outside from the water sprinkling hole 9c.

A valve mechanism 10 is provided at the end of the passage 4 facing into the sprinkler pot 6, which normally shuts off the end of the passage 4, but opens the passage 4 upon sensitivity to heat in the event of a fire, allowing pressure water to flow out. It is provided.

This valve mechanism 10 includes a flange 12 at the upper end of a vertically long rod shaft 11, a spool 13 that fits into the cylinder shaft 5 at the upper end of the flange 12, and a seal 14 for water stop on the upper end surface of the spool 13. An elastic member 15 such as a packing or a spring is interposed between the cylindrical shaft 5 and the flange 12 to fix the cylindrical shaft 5 and the flange 12. A horizontal hole 16 passing through the flange 12 is provided, and the rod shaft 11 is formed with a through hole 17 whose upper end communicates with the horizontal hole 16 and extends downward, and the lower end of the rod shaft 11 is formed at the bottom of the spherical portion 8. It is supported by a retained heat-sensitive rupture container 18.

The through hole 17 of the rod shaft 11 is provided with a ventilary portion 19 in the middle thereof, and the rod shaft 11 has a sounding mechanism 20 that generates an alarm by the suction force of pressurized water passing through this portion.
is provided.

This sounding mechanism 20 is formed by providing an air hole 21, a diaphragm 22, and a whistle hole 23 below the ventilate part 19, and vibrates the diaphragm 22 with air sucked by pressure water to generate an alarm sound. I'm starting to do that.

Further, the lower end of the through hole 17 is opened by a window hole 24, and the lower end surface serves as a water sprinkling plate 25, and the heat-sensitive rupture container 18 injects a liquid 26 such as a low-melting metal into the inside of the glass bulb. However, when the ambient temperature reaches a certain temperature, the liquid 26 rapidly expands, and the expansion pressure causes the glass bulb to burst.

The heat-sensitive rupture container 18 is held in a holder part 27 provided at the lower part of the water sprinkling jar 6, and the lower end of the rod 11 passes through a vertical hole 28 provided at the lower part of the water sprinkling jar 6, and the rod shaft 11 is inserted onto the heat-sensitive rupture container 18. , and the spool 13 is fitted into the cylinder shaft 5 to block the passage 4.

Therefore, when the heat-sensitive rupture container 18 ruptures due to a fire outbreak, the rod shaft 11 falls due to its own weight and the pressure of the pressure water, the spool 13 is pulled out from the cylindrical shaft 5, opens the passage 4, and the pressure water flows into the water spray bottle 6. After the water flows into the water hole 9
At the same time, a part of the pressure water flows out from the horizontal hole 16 of the rod shaft 11 that has fallen to the bottom of the spherical part 8 through the through hole 17,
An alarm will sound.

The head main body 3 is provided with a water pressure checking device 31 and a test water spraying device 32 on both sides thereof.

The water pressure confirmation device 31 includes a chamber 33 communicating with the passage 4.
A piston 34 is provided inside the head body 3, and a rod 35 of the piston 34 is made to protrude outside the head body 3.
The piston 34 is always elastically biased to move inward by a spring 36, and the presence or absence of pressurized water can be confirmed by pushing in the rod 35 and observing the reaction force, or by checking the scale 37 on the rod 35. I have to.

The test water spraying device 32 is configured such that a branch passage 38 of the passage 4 can be opened and closed by a needle valve 39, and a water pressure gauge or a water intake tap is connected to the end of the branch passage 38, so that pressure water can be checked.

The first example of this invention has the above-mentioned configuration, and in the installed state where the passage 4 is connected to the pressure water pipe, the spool 1 of the rod shaft 11 is connected to the spool 1 of the rod shaft 11 as shown in FIG.
3 blocks the through hole 4, and the rod shaft 11 is connected to the heat-sensitive rupture container 1.
8 holds.

If a fire occurs in this state and the heat-sensitive rupture container 18 ruptures due to the rise in temperature and the rod shaft 11 falls, the passage 4 will be opened and the pressure water will flow into the water sprinkling pot 6.
As shown in Figs. 2 and 3, the water spout 6 is spouted from the surrounding sprinkling holes 9, and at the same time the water sprinkling jar 6 rotates, at the same time an alarm is generated, and the fire is extinguished and the occurrence of a fire is notified. be.

As described above, this invention has the above-described configuration, and therefore has the following effects.

(1) A large number of water sprinkling holes are installed in the water sprinkling pot attached to the head body so that the reaction force generated when spraying pressure water causes the water sprinkling pot to rotate, so that the direction in which the pressure water is spouted from the water sprinkling pot rotates. It is possible to cover a wide space both two-dimensionally and three-dimensionally with a water curtain, greatly improving fire extinguishing efficiency and cooling effect.

(2) Since the pressure water that has flowed into the water sprinkling pot is spouted out from the water sprinkling holes provided on the peripheral wall of the water sprinkling pot,
Pressure water can be ejected directly, reducing pressure loss, spraying water over long distances, and extinguishing walls and curtains.

(3) Since a hollow watering pot is used for watering, it is possible to spray water toward the ceiling by selecting the location of the watering hole.

(4) Since the valve mechanism is equipped with a sounding mechanism that uses water flow, it is possible to extinguish the fire and at the same time notify people in the vicinity of the fire and its location.Moreover, driving energy such as electricity is not required to generate the sound. Therefore, it is possible to reliably issue a warning even in the event of a power outage or disconnection.

[Brief explanation of drawings]

Figure 1 shows the first sprinkler according to this invention.
FIG. 2 is a vertical cross-sectional view showing an example of the above water sprinkling operation before operation, FIG. 3 is a front view of the same water sprinkling operation, and FIG. 4 is a cross-sectional view of the water sprinkling pot. DESCRIPTION OF SYMBOLS 1... Water supply pipe, 3... Head main body, 4... Passage, 6... Water sprinkling pot, 9... Water sprinkling hole, 10... Valve mechanism, 18... Heat-sensitive rupture container, 20... Sound generating mechanism, 31... ...Water pressure confirmation device, 32...Test water spray device.

Claims (1)

[Claims for Utility Model Registration] (1) A pressure water passage provided in the head body is provided with a valve mechanism that shuts off this passage and opens when heat is sensed, and the head body is provided with a water sprinkling pot whose inside can communicate with the passage. It is rotatably mounted, and a large number of watering holes are provided on the peripheral wall of the watering pot so that the watering pot rotates due to the reaction force when watering with pressure water, and the valve mechanism is attached to a rod shaft that passes through the watering pot when it is in the open position. A flow channel is provided to allow the pressure water inside the water sprinkling pot to flow out to the outside, and a sounding mechanism is installed in the middle of this flow channel, in the part of the water pot that faces the outside when it is in the open position, to suck in air with the passing water flow and make a sound. A sprinkler head characterized by: (2) The sprinkler head according to claim 1, wherein the pressure water passage of the head body is equipped with a water pressure confirmation device that is pushed outward by the pressure of the pressure water.