JPS5827943B2 - sprinkler head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sprinkler head whose operation can be confirmed using a switch that opens and closes depending on the water flow.

Conventionally, the operation of sprinkler heads has been mechanically checked when the link mechanism of the heat-sensitive section is disassembled in the event of a fire.

However, in this case, although it is possible to check the operation of each individual sprinkler head, it is not possible to centrally monitor the overall operating status in a remote central control room.

In addition, water leak detection devices that detect water leaks from sprinkler heads are designed to detect water leaks by detecting water leaks and closing contacts.
The contact point could only be used to simply detect water leakage, and the operating status of the sprinkler head could not be confirmed using the contact point.

Therefore, an object of the present invention is to provide a sprinkler head whose operation can be checked at a remote location.

An embodiment of this invention is shown in FIG.

In the figure, 1 is a cylindrical body with a water spout 2 on the circumferential body;
3 is a flange attached to the main body 1; 4 is a water inlet formed in the flange 3; 5 is a piston housed in the main body 1 and opens and closes the water inlet 4; 6 is a through hole formed in the upper part of the piston 5; 8 is a bimetal provided in the -f section of the main body 1, 9 is a valve body connected to the bimetal 8, 10 is a sub-flow path provided for releasing water in the piston 5, Reference numeral 11 denotes a communication link connecting the inside of the screw 1 hem 5 and the sub-flow path 10, 12 an operating rod that is loosely engaged with the connection A [I] 11, and 13 a pole plate that is attached to the flange 3 via an insulator 14. It is.

The tip of this electrode plate 13 protrudes into the sprinkling channel of the flange 3, and is connected to another pole provided on the main body 1 through the sprinkling water flow during watering.

That is, the electrode plate 13 and the other electrode of the main body 1 function as a switch that is opened and closed by the water spray.

This communication signal lights up an operation confirmation lamp (not shown) on a central monitoring panel in a remote central control room.

In operation, water in the water supply 4 flows into the piston 5 through the through hole 6 in the piston 5.

At this time, since the bimetal 8 maintains a normal state, the valve body 9 connected thereto closes the subflow path 10 and the communication port 11,
Water in the piston 5 is prevented from flowing out.

As a result, the water pressure of the water supply [-14 and the water pressure inside the piston 5 become equal, so the force of the return spring 7 causes the piston and the piston 5 to
is pushed up and the water supply port 4 is at r6.

In this case, the electrode plate 13 and the other poles of the main body 1 are not electrically connected.

Next, when the bimetal 8 is thermally deformed due to the occurrence of a fire, the valve body 9 moves to open the sub-channel 10 and the communication port 11, as shown in FIG.

As a result, the water inside the piston 5 flows out through it, so the pressure inside the piston 5 becomes low, and the water pressure overcomes the return spring 7, so the piston 5 descends and starts sprinkling water from the water spout 2.

In this case, since the electrode plate 13 and the other electrode of the main body 1 are electrically connected by the water spray, this signal is sent to the central monitoring board and the operation confirmation lamp is turned on.

Next, when the fire is extinguished and the ambient temperature of the bimetal 8 becomes low, the bimetal 8 tries to turn over, but cannot do so because the water pressure of the water supply port 4 acts on the bimetal 8 while water continues to be supplied.

Then, when the water supply to the water supply port 4 is stopped -1, the water pressure applied to the piston 5 becomes low, so the piston 5 is moved by the operating rod 12 receiving the force of the return spring 7 and the reversing force of the bimetal 8. pushed upwards.

At this time, the bimetal 8 is simultaneously reversed and returns to the state shown in FIG.

As a result, the water supply 4 is closed.

In this case, since the electrode plate 13 and the other electrodes of the main body 1 are not electrically connected, the operation confirmation lamp of the central monitoring panel goes out.

FIG. 3 is a sectional view of another embodiment of the invention.

This sprinkler head has a pole plate 16 attached to the upper side of the flange 3 via an insulator 17, with its tip 16a facing the sprinkling port 2, and electrically connected to the other pole of the main body 1 by the water flow from the sprinkling port 2. It is supposed to be done.

The other features are the same as in FIG. 1, and the effects are also the same.

As described above, in the sprinkler head of the present invention, the electrode plate is provided on the base via an insulator, the end of the electrode plate is positioned in the sprinkler channel, and the electrode plate and the base are brought into electrical conduction by the sprinkler water flow. Since the operation is confirmed by the transmission signal, the operation can be confirmed from a remote location.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of one embodiment of the present invention, FIG. 2 is an explanatory diagram of its operation, and FIG. 3 is a sectional view of another embodiment. 1... Body, 2... Water spout, 3...
...Flange, 13...Pole plate, 14...
··Insulator.

Claims (1)

[Claims] 1. An electrode plate is provided on the base via an insulator, the end of this plate is positioned in a sprinkler channel, the electrode plate and the base are brought into conduction by the water spray, and the operation is confirmed by the conduction signal. A sprinkler head characterized by: