JPS59151971A - Fire extinguishing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fire extinguishing system that automatically injects a fire extinguishing agent without requiring a power source when a fire or the like occurs and the temperature reaches a predetermined set temperature or higher to extinguish the fire initially.

Fire extinguishing equipment conventionally installed in hotels, inns, etc. includes water spray equipment from sprinklers, portable foam fire extinguishers for initial extinguishing purposes, powder fire extinguishers, and the like.

However, sprinkler systems require a power source,
Especially in the case of an earthquake or fire, general power supply often goes out.
It is necessary to secure a dedicated emergency power source. Furthermore, when installed in an existing building, large-scale renovation work is required, resulting in a large amount of cost. In addition, although portable fire extinguishers are certainly effective, there are few automated ones (manual operation was essential).Furthermore, foam extinguishers and sprinkler systems require relatively large amounts of water. Therefore, if the water source is not shut off promptly, water will continue to be sprayed even though the fire has already been extinguished.For example, in a multi-story building, water from the upper floors may There is an inconvenience that water may flood into the lower floors.

This invention eliminates the above-mentioned drawbacks, allows the injection of extinguishing agent to be controlled without requiring a power source, automatically extinguishes the fire when the temperature reaches a preset temperature, and is inexpensive to install. The purpose is to provide a fire extinguishing system that does not cause any damage.

An embodiment of the present invention will be described below with reference to the drawings.

The embodiment shown in FIG. 1 shows a case where a fire extinguishing system according to the present invention is attached to a building.

In the figure, the part to which the one-dot chain line indicates the part to be installed on the ceiling of the place where the fire is to be extinguished, and the two-dot chain line B to the part to be installed at a position indicating the direction to guide people (for example, an entrance, an emergency exit, etc.).

As shown in FIG. 1, this invention includes a control section 3 connected to a cylinder 1 via a first connecting pipe 2, and a control section 3 that controls the extinguishing agent in the cylinder 1 to a second It has a fire extinguishing agent injection nozzle 5 which injects the fire extinguishing agent through a connecting pipe 4.

The cylinder 1 is filled with a fire extinguisher (for example, ABC powder fire extinguisher) under pressure, and the cylinder 1 is filled with a fire extinguisher (for example, ABC powder fire extinguisher),
A driving cylinder 6 is connected that supplies pressurized gas (for example, N2 gas, etc.) for adjusting the injection of the extinguishing agent. This first connecting pipe 2 has a downstream pressure gauge 7. -Next pressure reducing valve 8
．． Test push button 9. The operating valves 10 are sequentially arranged, and one of the two branch pipes 2a includes a three-way valve 12 connected to an alarm buzzer 11, and a quick-open/close valve 13 that opens and closes according to the operation of the three-way valve 12, which will be described later. Connected via actuator. Further, this quick-opening/closing valve 13 is connected to one side of the cylinder 1 filled with the extinguishing agent through a manual valve 14, and to the other side thereof is connected to the extinguishing agent injection nozzle 5 via the connecting pipe 4 of m2.

In addition, the other branch pipe 2b includes a secondary pressure reducing valve 15 (to be described later) that adjusts the pressurized gas to the pressure necessary to operate the three-way valve 12, a secondary pressure gauge 16, and a starting push button (to be described later). 17
and are arranged. As shown in FIG. 2, the outlet side of the starting push button 17 is connected to the three-way valve 12 and the temperature-sensitive exhaust valve 18, which will be described later, via a branch pipe 2C12d.

Furthermore, an orifice 2e is connected between this branch pipe 2C and the branch pipe 2b to prevent malfunction of the three-way valve 12 due to the leakage of a small amount of pressurized gas from the temperature-sensitive exhaust valve 18. Note that 19 and 20 respectively indicate a push button for testing and a pressure gauge for confirming operation.

The starting push button 11 sends pressurized gas to the three-way valve 1-2 through the branch pipe 2C, operates the main valve (not shown) of the three-way valve 12, and opens the three-way valve 12 by self-holding. As shown in the second diagram, it is composed of a three-way valve having only two openings: a gas port 21 and a gas outlet 220 (the test push button is also formed in the same way).

The push button body 25 is held in a normally closed state by two springs 26 and 27 that press the push button body 25 through the O-ring 232 and the ball 24, respectively.

The temperature-sensitive exhaust valve 18 is installed, for example, in a place where fires can be prevented, such as indoors, and an exhaust nozzle 3 is connected to the opening 29 of the exhaust valve main body 28 connected to the branch pipe 2d at 5 as shown in the third figure.
0 is set. Further, a support plate 31 is fixed to the exhaust valve main body 28 via screws 32, and a support plate 31 is provided between the guide mounting seat 33 of the support plate 31 and the exhaust nozzle 30 in a form that blocks the opening of the exhaust nozzle 30. Temperature sensing material 3
4 is established. This temperature sensing material 34 is, for example,
Made of metal materials such as tin and lead that melt at relatively low temperatures,
In this embodiment, it is designed to melt at a heat temperature of 70°C to 80°C.

The tip of this temperature sensing material 34 is biased by a spring 35, and the lower end is fixed by an adjustment screw 36, so that it is kept in a normally closed state, and if a predetermined temperature is reached due to a fire or the like, the sensing material 34 will melt. However, it is formed so that pressurized gas can be discharged to the outside.

The actuator 3T that operates the valve shaft (not shown) of the quick opening/closing valve 13 has an air supply port 39 connected to the main body 38 with a branch pipe 2a, and an exhaust port 40 communicating with the atmosphere, as shown in the fourth diagram. is provided.

Inside, a pinion 42 is provided on a shaft 41 that drives the valve shaft of the quick-open/close valve 13, and this pinion 42 meshes with a rack 45 fixed to a cylinder 44 biased by a spring 43. In addition, 46 is an O-ring, 4
7 is an oil-impregnated rail for sliding the rack. In this way, the actuator 31 presses the cylinder 44 against the urging force of the spring 43 with the pressurized gas of the branch pipe 2a,
The quick opening/closing valve 13 is always closed. But the gas pressure is 0
When this happens, the cylinder 44 is configured to open the on-off valve 13 by the biasing force of the spring 43.

As shown in FIG. 5, the fire extinguishing agent injection nozzle 5 has a branch bed 49 replaceably attached to the center of a wide-flap-shaped diffusion pipe 48. This branch bed 49 has a radius curved surface that is almost the same as that of the extinguishing agent transport pipe 50, and is provided with an injection port 49a, so that the extinguishing agent injection area is extremely wide.

Note that the operating power source such as pressurized gas may be an air compressor holding an air storage tank, and the compressor may be operated to store compressed air when there is no power outage.

Next, the operation of this invention will be explained.

First, when the temperature-sensitive exhaust valve 18 is closed in normal times, the pressurized gas (for example, about 150 atmospheres) in the drive cylinder 6 passes through the -order pressure reducing valve 8 and is reduced to, for example, about 8 atmospheres, and the operating source valve 10
and branch into branch pipes 2a and 2b. The pressurized gas branched to the secondary pressure reducing valve 15 is further reduced in pressure to an appropriate pressure (for example, about 1.5 atmospheres) for operating the three-way valve 12,
Bring the starting push button 17 to the normally closed state. Here, when the push button 25 shown in the second figure is manually pressed to temporarily open the valve, the pressurized gas flows into the operation part of the three-way valve 12 from the branch pipe 2C, operating the main valve (not shown), and opening the valve. Then, the pressurized gas that was stopped at the inlet of the three-way valve 120 is transferred to the quick-open/close valve 13.
The signal is sent to the actuator 37 which opens the valve 1, and the quick-open/close valve 13 is closed by the operation of the actuator 3γ. Therefore, after this operation, even if the extinguishing lever 1a and the manual valve 14 are opened, the extinguishing agent in the cylinder 1 will not be injected even through the extinguishing agent injection nozzle 5.

However, when the ambient temperature of the temperature-sensitive exhaust valve 18 rises above a predetermined set temperature due to occurrence of a fire, etc., the temperature-sensing material 34 made of, for example, a soluble metal melts and the exhaust valve 18 opens. As a result, the pressure in the operating part of the three-way valve 12 connected via the branch pipes 2c + 2d becomes 0, and the three-way valve 12, which had been kept open until now due to self-holding, switches and flows into the actuator 37 rapidly. The pressurized gas that has kept the on-off valve 13 closed sounds the alarm buzzer 11 and is discharged to the outside air.

Particularly when a fire breaks out, people attempting to evacuate may lose visibility due to smoke, etc., but if the alarm buzzer 11 is used to guide people in the direction of the evacuation exit, their visibility can be reduced. Even if it is lost, the direction of release can be easily determined.

Due to the external discharge of this pressurized gas, the quick-on/off valve 13 is opened by the elastic force of the spring 430 of the actuator 37, and the extinguishing agent passes through the on-off valve 13 and is diffused and sprayed from the extinguishing agent injection nozzle 5, achieving the purpose of initial fire extinguishing. do.

Therefore, according to the present invention, since the extinguishing agent is automatically spouted when the temperature exceeds a preset temperature, there is no inconvenience of having to operate the extinguishing device manually.
This has the advantage that danger to the human body associated with firefighting activities can be eliminated in advance. In addition, since no power source is used to control the injection of extinguishing agent,
It always operates normally even during power outages due to earthquakes or fires. Furthermore, since only one cylinder is used, it is economical as there is no need to squirt more extinguishing agent than necessary, and when using powder extinguishing agent, there is no risk of making repeated use of the inside of buildings, furniture, clothing, etc. impossible. It also allows the use of commercially available dry powder fire extinguishers.

Furthermore, since the inside of the connecting pipe is always empty, in the event of an emergency such as a fire, the old extinguishing agent will not stick or become clogged and obstruct the flow path.

As described above, according to the present invention, it is possible to control the injection of extinguishing agent without requiring a power source, and it is also possible to extinguish the fire automatically when the temperature reaches a preset temperature or higher.In addition, the installation cost is low, and It has extremely excellent effects, such as causing no damage to other people.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view of a starting push button, Fig. 3 is a longitudinal cross-sectional view of a temperature-sensitive exhaust valve, and Fig. 4 is a longitudinal cross-sectional view of a temperature-sensitive exhaust valve.
The figure shows a longitudinal cross-sectional view of an actuator that operates a quick-open/close valve, and FIG. 5 shows a longitudinal cross-sectional view of a fire extinguishant injection nozzle μ. 1... Cylinder, 2.4... Connecting pipe, 6... Driving cylinder, 13... Rapid opening/closing valve, 18... Temperature-sensitive exhaust valve. Patent Applicant Takamatsu Ryokan Co., Ltd. 1b No. 3 Cause Figure 5 Director General of the Patent Office, 1981 Patent Application No. 26739 2, Name of the Invention Fire Extinguishing Device 3 Relationship with the Amendment Person Case Patent Applicant 11" Place Publication 51 Higashi S; 1゛To? Teratani Ward C/Thursday 2
11 Old l sound 12 Shishi Honmura Hill 71) ~ 5 Date of amendment order Showa Year Month [1 (Despatch) 6 Number of inventions increased due to arrest 1 Positive contents Monthly details page 1 line 20 "Initial digestion "for" is replaced with "
For initial fire extinguishing purposes”. (Delete "Push button 9 for Tee" from line 19 to line 20 of page 3 of specification 21. (4) Correct "extinguishing lever 1aJ" in line 12 of page 8 to "extinguishing lever 1aJ". Deletion as follows. Amend Figure 3 of Isamu as shown in the attached sheet. Above 3, Relationship with the case of the person making the amendment Patent applicant fi: Tokoro Name (8kan) Takamatsu Ryokan Co., Ltd. 4, Agent 5, Amendment date of order

Claims (1)

[Claims] A cylinder containing a pressurized extinguishing agent, a driving cylinder connected to the cylinder via a connecting pipe and supplying pressurized gas for adjusting injection of the extinguishing agent, and a driving cylinder arranged in the connecting pipe and supplied with pressurized gas for adjusting injection of the extinguishing agent. A quick-on/off valve for controlling the injection of the extinguishing agent; and a quick-on/off valve disposed in the connecting pipe, and when a predetermined set temperature is reached, the pressurized gas is used to operate the quick-on/off valve to inject the extinguishing agent. A fire extinguishing system equipped with a temperature-sensitive exhaust valve.