JPH034293Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a sprinkler head adapter that operates a sprinkler head when required, and in particular, it is used to seal a closed type sprinkler head in which a water head acts on the sprinkler head by utilizing the gas pressure generated by a gas generator. The present invention therefore relates to a sprinkler head adapter that operates the sprinkler head by mechanically breaking the bottle.

Sprinkler heads have been used in a wide variety of ways. However, in the case of sprinkler heads for fire extinguishing applications, such as closed type sprinkler heads that use glass bulbs, the reality is that the heat capacity of the fused part is generally large, and for this reason, the fire does not operate until the fire becomes large. It is. Therefore, in many cases, when the sprinkler is activated, a situation has occurred that can no longer be extinguished.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a sprinkler head adapter which eliminates the above-mentioned drawbacks, has a simple mechanical configuration, is capable of extinguishing a fire at an early stage, and is capable of reliably operating the sprinkler head in the event of a fire. be.

According to the present invention, a rupture device includes a temperature detector for detecting a fire, such as a thermostat, a gas generator that responds to the fire detection of the temperature detector, and a piston operated by the gas pressure generated by the gas generator. A sprinkler head adapter is provided, characterized in that the bottle-breaking device is assembled with a bottle-breaking device, and a closed type sprinkler head is operated by the bottle-breaking operation of the bottle-breaking device. Only the signal path for operating the gas generator based on the detection signal from the temperature sensor is formed by an electric signal circuit using a battery, and a manual switch is provided in parallel with the temperature sensor in the electric signal path to operate the gas generator. If the manual operation means is used, the sprinkler head adapter can be operated not only when the occurrence of a fire is automatically detected, but also manually as necessary to operate the sprinkler head. Furthermore, since the temperature detector sensitively detects the occurrence of a fire, it eliminates the inconvenience caused by the conventional large heat capacity fusing part and is effective in extinguishing a fire in the early stages. Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

1A to 1D are a front view, a rear view, a top view, and a side view showing how the sprinkler head adapter according to the present invention is attached to a sprinkler head. Figure 2 is a circuit diagram of the electrical signal circuit included in the sprinkler head adapter.
Figure 3 is a sectional view of a bottle breaking device with a gas generator;
FIG. 4 is a circuit diagram of an electrical signal circuit provided with a means for manually operating the gas generator.

In these figures, a closed sprinkler head 1 has a water head introduced at its top 1a;
It also has a deflector 13 for water sprinkling and a glass bulb 12 filled with a liquid that is easily expandable.
The easily expandable liquid inside the glass bulb 12 expands due to the rise in temperature and helps the glass bulb 12 break. A sprinkler head adapter 2 according to the present invention is attached to the closed type sprinkler head 1 using a mounting bolt 3a and a nut 3b. This sprinkler head adapter 2 is formed as an assembly consisting of a temperature detector 22 with a small heat capacity, a battery 23, a bottle breaking device 21 having a gas generator, and a casing 25 that houses these components. Now, as shown in FIG. 1D, the inside of the casing 25 is formed as a storage space for accommodating a bottle breaking device 21 equipped with a temperature detector 22, a battery 23, and a gas generator. The outer wall of the bottle 25 has an opening 26 that allows the temperature sensor 22 to easily sense external heat, and an operating hole 24 for a piston of the bottle breaking device 21, which will be described later. Temperature detector 22
The temperature rise in the event of a fire is sensitively detected through the heat-sensitive opening 26, and can be formed by a well-known thermostat. When the temperature sensor 22 consisting of a thermostat detects an increase in external temperature and closes, the gas generator included in the bottle breaking device 21 is activated by the current supplied from the battery 23, and the bottle breaks by spewing out high pressure gas. The piston of the bottle device 21 is actuated to cause the piston to protrude from the operating hole 24. As a result, the basic action is that the piston ruptures the glass bulb 12 of the sprinkler head 1, thereby starting the water spraying action of the sprinkler head 1. The distance between the glass bulb 12 and the bottle-breaking device 21 is selected and designed to suit the operating stroke of the piston included in the bottle-breaking device 21, and the distance between the glass bulb 12 and the bottle-breaking device 21 is selected and designed to suit the operating stroke of the piston that the bottle-breaking device 21 has. When the piston strokes through the operating hole 24 as described above due to gas pressure, the piston collides with the glass bulb 12, and the bottle is broken with the aid of the above-mentioned easily expanding liquid sealed within the bulb 12. is set to In addition, Figure 2 shows
Temperature sensor 2 housed inside the housing 25 mentioned above
This is a circuit diagram showing a second product taken out, and when the temperature detector 22 detects a temperature rise and closes, an operating signal (current) of the gas generator is sent from the battery 23 to the bottle breaking device 21 via the signal line 216. This indicates that the

Now, the detailed internal structure of the bottle breaking device 21 is shown in cross section in FIG. 3, and as is clear from FIG. When an electric signal corresponding to the fire detection signal is received on the signal line 216, the initiator 212 is operated and a high gas pressure is generated to cause the piston 215 held in the cylinder 213 below the gas generator 211 to move. Configured to operate strokes using gas pressure,
Moreover, this piston 215 itself is always pressed and held inward within the cylinder 213 by a spring 214. When the piston 215 strokes with gas pressure against the pressing force of the spring 214 as described above, the glass bulb 12 is broken at the tip of the piston 215.

Next, the operation of the sprinkler head adapter 2 of the present invention will be explained based on FIGS. 1, 2, and 3.

Now, when a fire breaks out and the temperature rises, the temperature detector 22 is sensitively activated. The temperature sensor 22
When a thermostat is formed, an electrical contact is closed in response to the detection of a fire, so that the electrical circuit shown in FIG. 2 is closed. Therefore, the signal line 216 of the gas generator 211 of the bottle breaking device 21 is energized from the battery 23, and the initiator 212 (third
(Fig.) ignites, subsequently producing pressurized gas. This generated gas pressure pushes the piston 215 outward against the spring holding force of the spring 214.
Therefore, as described above, the pushed-out piston 215 collides with the glass bulb 12 through the piston operating hole 24 of the casing 25 in FIG. 1D, mechanically breaking the glass bulb 12. In the sprinkler head 1, the glass bulb 12 presses the water head pressure up and down to maintain equilibrium, so when the glass bulb 12 is broken, the water falls and squirts toward the deflector 13 due to the water head pressure, causing a collision. do. Therefore, water is sprayed around the outside by the deflector 13 to extinguish the fire. In other words, the temperature detector 22, which sensitively detects temperature changes, such as a thermostat, is activated to quickly detect the occurrence of a fire, and the gas pressure from the gas generator 21 intervenes to actively destroy the piston 215. Since the bottle is stroked, the sprinkler head 1 is surely operated.

As shown in another embodiment in FIG. 4, in the electrical circuit for detecting the occurrence of fire in the sprinkler head adapter 2, a manually operated switch 24 is provided in parallel with the thermostat forming the temperature detector 22. If it is possible to close the switch 24 with the operating string 25, when a person visually detects the occurrence of a fire in advance of automatic fire detection, the switch 24 can be closed by pulling the operating string 52, and the ultimate In this case, the sprinkler head adapter can be activated to break the bottle, similar to the automatic fire detection described above.

In the above-described embodiment of the present invention, a thermostat is used as the temperature detector 22 when a fire occurs. Heat detectors, heat detectors, etc. can also be used. Furthermore, it goes without saying that instead of attaching the sprinkler head adapter 2 to the sprinkler head 1 with the mounting bolts 3a and nuts 3b, other attachment means, such as fixing with adhesive, may be employed. Further, if a lithium battery is used as the battery 23, its lifespan will be permanent, and the trouble of replacing the battery can be reduced.

Furthermore, the invention of the sprinkler head adapter 2 described above is not limited to use simply as a bottle breaking device for a sprinkler head, but can also be applied to an arrangement equipped with a bottle breaking member using a glass bulb, such as a fire extinguisher. Of course it is.

As described above, according to the present invention, there is provided a sprinkler head adapter that mechanically operates to break bottles using the gas pressure generated by a gas generator, and furthermore, since the operation of the gas generator is controlled by a sensitive temperature detector, fires can occur. This makes it possible to obtain a sprinkler head that operates reliably in the early stages of the process.

[Brief explanation of the drawing]

1A to 1D are a front view, a rear view, a top view, and a side view showing how the sprinkler head adapter according to the present invention is attached to a sprinkler head, and FIG. Circuit diagram of electric signal circuit, Part 3
The figure is a sectional view of a bottle breaking device having a gas generator included in the sprinkler head adapter, and FIG. 4 is a circuit diagram of the same electric signal circuit when equipped with a manually operated gas generator operating means. DESCRIPTION OF SYMBOLS 1... Closed sprinkler head, 2... Sprinkler head adapter, 12... Glass bulb (bottle seal), 13... Deflector, 21... Bottle breaking device, 22... Temperature detector, 211... Gas generator , 213...Cylinder, 215...Piston, 216...Signal line.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A sprinkler head adapter that is attached to a closed type sprinkler head and operates it when necessary, including a temperature detector for fire detection;
The assembly includes a gas generator that responds to fire detection by the temperature detector and a bottle-breaking device having a piston that operates with the gas pressure generated by the gas generator, and the bottle-breaking device operates to break the bottle. A sprinkler head adapter characterized in that a closed type sprinkler head is operated by the sprinkler head adapter. 2. Utility Model Registration Scope of Claim 1. The sprinkler head adapter according to claim 1, wherein a manual operating means for a gas generator is arranged in parallel with the temperature sensor.