JP2906027B2 - Automatic fire extinguisher for kitchen - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for simultaneously extinguishing a series of fires occurring in a place such as a range of a kitchen, a fryer for tempura, a hood, a duct and the like by a plurality of fire extinguishing equipments. The purpose of the interlocking type automatic fire extinguishing equipment is to simplify the structure and reduce costs.

[0002]

2. Description of the Related Art An example of a conventional automatic fire extinguisher for a kitchen is shown in FIG. 4, in which a cooking pan 2 and a fryer 3 for frying are placed on a stove 1. A hood 4 and a duct 5 are provided above the cooking pot 2 and the fryer 3, and the nozzles 8 and 11 for extinguishing the fire extinguishing agent directed to the cooking pot 2 and the fryer 3 are provided in the hood 4. Nozzles 12 and 12 ′ directed to the whole inside of the hood 4 are attached, respectively, and a nozzle 13 is attached in the duct 5. The nozzle 8 is connected to the first fire extinguisher 7 via a pipe 14, Is connected to the second fire extinguisher 9 via the pipe 15, the nozzles 12 and 12 'are connected to the third fire extinguisher 10 via the pipes 16, 17, 18 and the nozzle 13 is connected to the third fire extinguisher 10 via the pipes 19 and 18, respectively. One or more fire detectors 6 are installed at the entrance of the duct 5.

[0003] Although not shown, the first to third fire extinguishing devices are each provided with a detonator which receives a signal of a fire occurrence by the above-mentioned fire detector 6 and ignites by an electric signal via a control unit, and a tip device. In order to break the sealing plate of each fire extinguisher, a piston having a sharp-edged cutter is attached, and the piston is pressed by gas pressure generated by the firing explosion of the detonating device to break the sealing plate by the cutter. The filled fire extinguishing agent is pressure-fed into each of the above-mentioned pipes and jetted from each nozzle.
In this case, in addition to the detonator by ignition, there are also those which are operated by a solenoid, those which break a sealing plate, and those which open a valve.

[0004] In the event of a misfire from the cooking pot 2 or the fryer 3 or any of the misfires, the fire in the kitchen 4 is immediately spread to oils and fats adhering to the hood 4 and the duct 5, so that the entire fire extinguishing agent is in the kitchen. Since there is no effect unless the fire is radiated, the fire extinguishing signal from the fire detector 6 first activates the first fire extinguisher 7 to activate the nozzle 8
The fire extinguishing agent is sprayed onto the cooking pot 2 from above, and then the second fire extinguisher 9 is operated, and the third fire extinguisher 10 is further operated from the nozzle 11 onto the fryer 3 through the pipes 18 and 19. 13 into the duct 5 via pipes 18, 17, 16 nozzles 12 and 12 '.
Accordingly, the fire extinguishing agent is sequentially injected into the hood 4. Here, a description has been given of the case where one nozzle is provided for each of the nozzles 8 and 11, but there is also a case where two nozzles are provided for each of the nozzles and the nozzles 11 emit light from each nozzle.

[0005]

However, in the above-mentioned conventional automatic fire extinguisher for a kitchen provided with a plurality of fire extinguishers, all the fire extinguishers installed in a plurality of fire extinguishers are required.
Each of them has a detonator and a control device for sending a start signal to all the fire extinguishers is required, which not only complicates the equipment but also increases the cost. .

[0006]

SUMMARY OF THE INVENTION Therefore, the present invention solves the above-mentioned various problems in the prior art, and simplifies the structure of an automatic fire extinguishing system for a kitchen equipped with a plurality of fire extinguishing devices and reduces costs. It is intended to be able to measure, specifically, a plurality installed in the kitchen
Fire extinguisher jet nozzles and each fire extinguisher jet nozzle
Multiple fire extinguishers to supply fire extinguisher and
To start the fire extinguisher.
It consists of a fire detector that sends a signal,
One of them is to open the pressurized gas container by the detonator.
Other fire extinguishing systems,
Receiving the gas pressure from the pressurized gas container opened by the device
Provide a mechanism to open each pressurized gas container.
DOO relates to an automatic fire extinguishing system for kitchen according to claim.

[0007]

[0008]

When a fire detector installed in a kitchen detects a fire, an electric signal is sent to one fire extinguisher to detonate the detonator. When the detonator of one fire extinguisher detonates, the pressurized gas container is opened by the generated gas pressure, and high-pressure gas is ejected, the gas activates the fire extinguisher and releases the extinguishing agent, and the gas is released. A part of the pressure is led to the starting part of another fire extinguishing device, and the pressurized gas container is opened by the gas pressure to blow out the high pressure gas, and the fire extinguishing agent in the corresponding fire extinguishing device is blown out. Similarly, a part of the blast gas is guided to a starting part of another fire extinguisher, and the gas pressure is used to open the pressurized gas container to blast high pressure gas, thereby extinguishing the fire in the corresponding fire extinguisher. Eject the drug. When the number of fire extinguishing devices is larger, the fire extinguishing agent is sequentially ejected by the same operation.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific contents of the present invention will be described below with reference to an embodiment shown in FIGS. 1, 2 and 3. Reference numeral 20 denotes an installation at the entrance of a duct (not shown). One or a plurality of fire detectors, 21 is a fire extinguisher storage box, 39 is a first fire extinguisher, 40 is a second fire extinguisher, 41 is a third fire extinguisher, and 28 is a fire extinguisher 39 A pressurized gas container, 33 indicates a pressurized gas container for the second fire extinguisher 40, and 34 indicates a pressurized gas container for the third fire extinguisher 41.

The fire detector 20 is connected via a wiring 22 to a control unit 23 provided in a fire extinguisher storage box 21. Each of the pressurized gas containers 28, 33 and 34 contains carbon dioxide gas inside the container. High-pressure gas is press-fitted, the opening is welded to a sealing plate 29 made of a thin metal plate to seal the gas, and starting portions 24, 31 and 32 are mounted on the respective upper portions thereof. As shown in detail in FIG. 2, the starting unit 24 includes a piston 26 in a cylinder 26a facing the opening of the pressurized gas container 28, and a detonator 25 facing the passage 24a, and a cylinder 26a. And a branch connection portion 43 facing the side surface of the main body.

That is, an inner hollow cutter 27 is attached to the lower end of the piston 26 so that the tip is sharply pointed, and is directed toward the sealing plate 29. The inner cutter 27 is vertically movable within the cylinder 26a. And is constantly urged via a spring 42 in a direction of separating from the sealing plate 29. Reference numeral 45 denotes an air-tight O-ring for sealing so that gas in the passage 24a does not create a gap between the piston 26 and the cylinder 26a. The detonator 25 is filled with a detonator having a property of exploding by electric energy, and is attached to a state where the detonator faces the passage 24a. In addition, a lead 44 is connected to the control unit 23 described above. Connected through. Further, the branch connection portion 43 has a hollow inside, and has one end connected to the above-described cylinder 26a, the other end connected to the pipe 30, and the branched portion connected to the pipe 35.

As shown in detail in FIG. 3, the starting portions 31 and 32 are provided with pistons 47 formed in cylinders 47a facing the respective openings of the pressurized gas containers 33 and 34, Connection part 51 facing passage 46
And a connecting portion 52 facing the side surface of the cylinder 47a. The configuration of the piston 47 is the same as that of the piston 26 of the activation section 24 described above. The connection section 51 is connected to the connection pipe 30 communicating between the branch connection section 43 of the activation section 24 and the activation section 32. A connection pipe 53 communicating with the portion 51 is interposed.

The connection unit 51 of the activation unit 32
In this case, since there is no connection destination to be further connected, only one connection port is required. In this embodiment, three fire extinguisher devices are used. However, when four or more fire extinguisher devices are provided, all of the connecting portions 51 of the starting portion located in the middle except for the last starting portion for the fire extinguishing device have two ports. It is necessary to use the branching configuration shown in FIG.

Further, the branch connection section 43 of the starting section 24 and the first
The connecting pipe 35 is provided between the fire extinguisher 39, the connecting pipe 36 is provided between the connecting part 52 of the starting part 31 and the second fire extinguisher 40, and the connecting part 52 of the starting part 32 is connected to the third fire extinguisher. The connecting pipes 37 are interposed between the connecting pipes 41 and 41, respectively.

Therefore, in a kitchen, when a misfire occurs from a cooking pot or a fryer on a stove, the flame usually spreads over the entire upper hood, and also spreads over time on oils and fats in the duct adhered to the hood. The fire spreads and the flame spreads. In this case, the fire detector 20 installed in the hood or near the entrance of the duct detects the occurrence of the fire, and immediately notifies the controller 23 of the fire. Further, the control unit 23 activates a relay or the like to energize via the lead wire 44, thereby detonating the detonating device 25 of the starting unit 24.

By the detonation of the detonator 25, a high-pressure gas is instantaneously generated in the passage 24a, and the piston 26 is pressed downward against the resilience of the spring 42. Of the pressurized gas container 28, and blows out the pressurized gas in the pressurized gas container 28. The fired fire is extinguished in the first fire extinguisher 39 through the pipe 35 through the branch connection 43 from the cylinder 26 a through the hollow interior of the cutter 27. The medicine is pressed out and injected through a pipe 54 from a fire extinguishing agent injection nozzle (not shown) installed in a hood or a duct, and a part of the pressure gas is passed through a connecting pipe 30 into a passage 46 of the starting unit 31. And presses down the piston 47 in the cylinder 47a to break through the sealing plate of the pressurized gas container 33,
The pressure gas in 3 is jetted.

Further, the gas ejected from the pressurized gas container 33 is supplied from the cylinder 47a to the second
The extinguishing agent in the second extinguishing device 40 is pressed out of the second extinguishing device 40, and is extruded from a second extinguishing agent injection nozzle (not shown) installed in a hood or a duct through a pipe 55. In the same manner as described above, a part of the gas was
And presses down the piston 47 in the cylinder 47a to break through the sealing plate of the pressurized gas container 34, thereby ejecting the pressurized gas in the pressurized gas container 34.

The pressurized gas ejected from the pressurized gas container 34 is fed into the third fire extinguisher 41 through the connecting pipe 37 to press out the fire extinguishing agent in the third fire extinguisher 41, and this is discharged into the pipe 56. Through a fire extinguishing agent injection nozzle (not shown) installed in a hood or duct.

[0019]

As described above, the present invention is directed to a kitchen.
Multiple fire extinguishing agent jet nozzles installed and each fire extinguishing
Multiple fire extinguisher for supplying fire extinguishing agent to the spray nozzle
And the fire in the kitchen was detected, and the fire extinguisher was started.
With a fire detector that sends an electrical signal to
One of the fire extinguishing systems is pressurized by a detonator.
Has a mechanism to open gas containers and other fire extinguishing
The device is designed to spray a pressurized gas container
Machine to open each pressurized gas container under the output gas pressure
It has a structure. Therefore, a plurality of fire extinguishers have a mechanism for opening one of the pressurized gas containers by the detonator, and the other fire extinguisher receives the pressure of the gas ejected from the pressurized gas container opened by the detonator. In order to provide a mechanism for opening the pressurized gas container, all of the fire extinguishers installed were equipped with detonators, and a start signal was sent to all of those extinguishers. It is not necessary to provide a control device, the structure of the facility is simplified, and the cost of the facility can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of an automatic fire extinguishing system for a kitchen according to one embodiment of the present invention.

FIG. 2 is a partially enlarged cross-sectional view of an activation unit.

FIG. 3 is a partially enlarged cross-sectional view of an activation unit.

FIG. 4 is a schematic explanatory view of a known automatic fire extinguishing system for a kitchen.

[Description of Signs] 20 Fire detector 21 Fire extinguisher storage box 22 Wiring 23 Control unit 24 Activating unit 24a Passage 25 Detonator 26 Piston 26a Cylinder 27 Cutter 28 Pressurized gas container 29 Seal plate 30 Connection pipe 31 Activating unit 32 Activating unit 33 pressurized gas container 34 pressurized gas container 35 connecting pipe 36 connecting pipe 37 connecting pipe 39 first fire extinguisher 40 second fire extinguisher 41 third fire extinguisher 42 spring 43 branch connecting part 44 lead wire 45 O-ring 46 passage 47 piston 47a cylinder 48 O-ring 49 cutter 50 spring 51 connecting part 52 connecting part 53 connecting pipe 54 pipe 55 pipe 56 pipe

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A62C 35/10 A62C 3/00 A62C 37/40

Claims (1)

(57) [Claims] A plurality of fire extinguishing agent jetting nozzles installed toward the kitchen, a plurality of fire extinguishing devices for supplying a fire extinguishing agent to each of the fire extinguishing agent jetting nozzles, and detecting a fire in the kitchen, A fire detector for sending an electrical signal for activating the fire extinguisher, wherein one of the plurality of fire extinguishers has a mechanism for opening the pressurized gas container with a detonator, and the other fire extinguisher is An automatic fire extinguisher for kitchens, comprising a mechanism for opening each pressurized gas container by receiving the pressure of the gas ejected from the pressurized gas container opened by the detonator.