JP5519726B2 - Smoke extinguishing device - Google Patents

Description

The present invention relates to a smoke extinguishing device that suppresses a fire by generating a fire extinguishing aerosol by burning a solid fire extinguisher.

  Conventionally, there are known smoke-extinguishing devices that generate fire-fighting aerosols by igniting and burning solid fire extinguishing agents in order to suppress fires that occur in closed closed spaces such as cable ducts, control panels, and equipment enclosures. It has been.

  In such a smoke-extinguishing device, when a fire is detected by a spot-type sensor arranged in the monitoring area inside the cable duct or equipment, an electric signal is sent to the ignition device of the smoke-extinguishing device, and the solid fire extinguisher Is ignited and burned. The aerosol generated by the combustion of the solid fire extinguishing agent contains, for example, potassium chloride and potassium bromide as main components, and additionally contains water, carbon dioxide and nitrogen, and can suppress fire extinguishing by a combustion suppressing action.

JP 2005-503853 A JP-A-6-269513 JP 63-54178 A

  However, in such conventional smoke-extinguishing and extinguishing devices, a detector is spot-positioned in the monitoring area to detect a fire, so the detection time after the fire has occurred depends on the installation location of the detector. Affected. For example, in the case of a cable duct, when a cable fire occurs at a position away from the location where the sensor is installed, the time delay from when the fire is detected until aerosol is generated increases.

  In addition, in a closed space where the structure of the monitoring area is complex or inside, such as inside the equipment, the installation location of detectors and smoke-extinguishing devices is limited, and it takes time to detect a fire and generate aerosol. There is such a problem.

  Furthermore, compared to a fire that produces a flame such as flammable liquid such as oil, a fire that burns cables, etc. may continue to smolder without increasing the flame, and the fire can be detected without increasing the temperature. There is no denying the possibility of being late.

  It is an object of the present invention to provide a smoke-extinguishing device that can easily and easily install a sensing unit at a location where a fire in a monitoring area is to be detected, and that can quickly extinguish by shortening the sensing time.

It is another object of the present invention to provide a smoke-extinguishing device that can effectively prevent the ejection of flame due to the burning of a solid fire extinguishing agent.

The present invention is a smoke-extinguishing device,
A housing body having a fire-extinguishing aerosol outlet opening forward ;
A fire extinguisher storage case that is incorporated into the interior of the housing body with a surrounding space apart, and that has an opening at the rear to store a solid fire extinguisher,
Flue structure forming flue for guiding the fire extinguishing aerosol ejected from the opening of the extinguishing agent storage case spout of the housing body through the periphery from behind the fire extinguishing agent storage case,
A flame ejection preventing member disposed in the flue;
It is characterized by having.

  The flame ejection preventing member is a wire mesh or a filter.

  The flame ejection preventing member is arranged with a plurality of glass or porcelain small-diameter pipes.

  A plurality of glass or porcelain balls are arranged on the flame ejection preventing member.

The flame ejection preventing member has a plurality of glass or porcelain balls arranged between two wire meshes.

  According to the present invention, it is possible to effectively prevent the ejection of flame due to the burning of the solid fire extinguishing agent by arranging the flame ejection preventing member that passes only the aerosol such as a wire mesh or a filter in the middle of the flue. it can.

  In addition, a flue from the back of the fire extinguisher storage case to the front spout is formed inside the housing containing the solid fire extinguisher. In the formation, the solid fire extinguisher and the jet outlet are separated from each other, and the flue is bent so that the direction in which the flame comes out and the jet outlet is not in a straight direction, so that the flame due to the burning of the solid fire extinguisher is sufficient. It is possible to prevent the secondary fire and the like from being ejected from the ejection port to the outside.

  The fire extinguisher storage case is built inside the case body so as to be separated from the surroundings, minimizing contact with the case body, and preventing the heat from burning solid fire extinguisher from being transmitted to the outer case body. can do.

  In addition, a heat sensing cable for detecting a fire can be freely arranged in the monitoring area. For example, even if the monitoring area has a complicated structure such as the inside of the device, it can be appropriately arranged without restriction because it is a flexible heat sensing cable. In addition, by laying in a place where there is a risk of fire, there is no delay in detecting the fire, and the time from when the fire is detected until the aerosol is ejected and extinguished can be shortened.

  In addition, instead of spot monitoring, line, surface, or three-dimensional fire monitoring can be performed, and an optimum fire detection form adapted to the situation of the monitoring area can be taken.

In addition, it is possible to monitor the fire by freely arranging the heat sensing cable in the monitoring area, so that the installation location of the housing containing the solid fire extinguishing agent and ignition circuit can be freely determined as necessary to extinguish the fire in the monitoring area in the event of a fire Aerosol can be ejected.

Explanatory drawing which showed embodiment of the smoke-extinguishing apparatus by this invention Sectional drawing which showed the housing | casing internal structure of embodiment of FIG. Explanatory drawing which took out and showed the extinguishing agent storage case of FIG. FIG. 2 is a circuit diagram showing an embodiment of the ignition circuit unit of FIG. The circuit diagram which showed other embodiment of the ignition circuit part of FIG. Explanatory drawing showing the operation of this embodiment The circuit diagram which showed other embodiment of the ignition circuit part of FIG. The circuit diagram which showed other embodiment of the ignition circuit part of FIG. Explanatory drawing which showed the specific example of the flame ejection prevention member arrange | positioned in the flue of this embodiment

  FIG. 1 is an explanatory view showing an embodiment of a smoke-extinguishing device according to the present invention. In FIG. 1, the smoke-extinguishing apparatus 10 of the present embodiment has a housing 12 with an opening 14 in the front, and a solid fire extinguisher that generates fire-extinguishing aerosol by combustion is housed inside the housing 12. Yes. A 4-pin connector 16 is attached to the spout 14 of the housing 12 by fixing the support frame 15 with screws 17.

  A plug 18 can be attached to and detached from the connector 16, and a power line 22 and a heat sensing cable 20 are drawn from the plug 18. The power line 22 supplies a predetermined DC power supply voltage to the smoke-extinguishing device 10.

  The heat-sensing cable 20 is two twisted signal wires covered with a resin such as vinyl, and is wired in a monitoring area by the smoke-extinguishing device 10, and voltage is applied from the smoke-extinguishing device 10 to the two signal wires. Has been.

  During normal monitoring, since the two signal lines of the heat sensing cable 20 are covered with an insulator, for example, with vinyl or the like, the two signal lines are not in contact with each other, and no current flows. When a fire occurs, the heat as a result of the fire causes the vinyl, which is the insulation coating of the signal line of the heat sensing cable 20, to melt, and the two signal lines come into contact with each other, resulting in a short circuit state.

  For this reason, the two signal lines of the heat sensing cable 20 form a closed circuit, which is detected by the ignition circuit section which will be clarified in the following description provided on the side of the smoke-extinguishing device 10 and is stored in the solid state. By igniting and burning the extinguisher, the aerosol is ejected from the ejection port 14 to the monitoring area.

  2 is a cross-sectional view showing the internal structure of the housing of the embodiment of FIG. 1, FIG. 2 (A) is a cross-sectional view seen from the plane, and FIG. 2 (B) is a cross-sectional view seen from the side. .

  In FIG. 2, the housing 12 of the smoke-extinguishing device 10 incorporates a box-shaped housing body 24 having an outlet 14 provided outside and a fire extinguishing agent storage case 26 incorporated therein. As apparent from FIG. 2B, the fire extinguisher storage case 26 is a box-shaped case member that opens to the rear, and with respect to the mounting piece 40 whose front portion is fixed to the housing body 24 by the mounting piece 40, The connector 16 is fixed together with the support frame 15 by screws 17.

  The rear part of the fire extinguisher storage case 26 is formed with a support piece 36 bent in the vertical direction and an extended piece 44 with the side surface extending backward, with respect to the vertical inner surface and the rear inner surface of the housing body 24. The fire extinguisher storage case 26 is supported so as to be in a floating state.

  Here, the casing main body 24, the extinguishing agent storage case 26, and the support frame 15 of the connector 16 generate aerosol due to the combustion of the solid extinguishing agent 28, so that the structure can withstand the heat due to the burning of the solid extinguishing agent 28. Made of metal material.

  A solid fire extinguishing agent 28 is accommodated in the extinguishing agent storage case 26, and a heater 30 is attached to the solid extinguishing agent 28.

  An ignition circuit portion 32 is provided inside the housing body 24. A signal line for sending power from the power line 22 shown in FIG. 1 and a signal line for connecting the heat sensing cable 20 are connected to the ignition circuit section 32 from the connector 16 side. A signal line is also connected.

  When the short circuit of the heat sensing cable 20 due to a fire is detected, the ignition circuit unit 32 ignites and burns the solid fire extinguisher 28 by energizing and heating the heater 30.

  The solid fire extinguisher 28 used in the present embodiment generates a fire extinguishing aerosol by combustion, and the aerosol is an ultrafine particle of about 2 μm, the main component of which is a metal oxide, carbonate or phosphate or a mixture thereof. Contains.

  Specifically, potassium chloride, sodium chloride, sodium carbonate, sodium sulfate and the like are the main components, and nitrogen, carbon dioxide, water vapor and the like are contained therein. In the aerosol having such a main component, the aerosol itself is not toxic and can be said to be an environmentally friendly generated gas.

  The amount of the solid fire extinguishing agent 28 is determined according to the volume of the monitoring area, but the weight of the solid extinguishing agent 28 for generating the aerosol necessary for extinguishing the fire per 1 cubic meter of the monitoring area is 80 to 200 grams. Based on this, a solid extinguishing agent 28 in an amount corresponding to the capacity of the monitoring area to be extinguished is stored in the extinguishing agent storage case 26.

  In addition, the fire extinguishing action by the aerosol generated by the combustion of the solid fire extinguishing agent 28 is performed by filling the monitoring area with the generated aerosol to extinguish and suppress the active center of combustion burning by the occurrence of the fire.

  Inside the housing 12 containing the solid fire extinguishing agent 28, a flue 38 is formed from the back of the fire extinguishing agent storage case 26 through the periphery thereof to the front jet outlet 14. In this way, the flue that wraps forward from behind is formed by separating the distance between the solid fire extinguishing agent 28 and the spout 14 and bending the flue 38 so that the direction in which the flame comes out and the spout are not in a straight line direction. With the configuration, flames due to the combustion of the solid fire extinguishing agent 28 are prevented from being ejected to the outside.

  Further, in order to more effectively prevent flame ejection by the solid fire extinguishing agent 28, a flame ejection preventing member 64 that passes only an aerosol such as a wire mesh may be disposed in the middle of the flue 38 as necessary. desirable. In the present embodiment, the flame ejection preventing member 64 is disposed inside the extended piece 44 extending from the rear opening 34 of the extinguishing agent storage case 26.

  FIG. 3 is an explanatory view showing the extinguishing agent storage case extracted from FIG. 2. FIG. 3 (A) is a plan view and FIG. 3 (B) is a sectional view as seen from the side.

  In FIG. 3, a fire extinguisher storage case 26 is a box-shaped case member opened rearward, and a mounting piece 40 for fixing to the housing body is fixed to the front side surface, the rear is opened, and the mounting piece 36 is vertically moved. The extending piece 44 extends rearward.

  As shown in FIG. 2, the fire extinguisher storage case 26 stores a fixed fire extinguisher 28, ignites and burns by energizing heating of the heater 30 when a fire is detected, and is heated by this combustion. The structure is such that the contact with the main body 24 is minimized and the heat generated by the combustion of the solid fire extinguishing agent 28 is not easily transmitted to the outer casing main body 24.

  In addition, when the solid fire extinguisher 28 stored in the fire extinguisher storage case 26 is combusted, a flame due to the combustion spouts out, but in the fire extinguisher storage case 26, a storage chamber 46 opened rearward is formed, Since the solid fire extinguisher 28 is housed here, the flame due to the combustion of the solid fire extinguisher 28 is ejected from the rear opening, and the aerosol accompanying the ejected flame is from the rear as shown in FIG. 2 (B). The fire extinguisher storage case 26 is moved forward through the side of the periphery of the extinguishing agent storage case 26 and the upper and lower flues 38 and ejected from the ejection port 14.

  By forming the flue 38 from the rear to the front, the flame due to the combustion of the solid fire extinguishing agent 28 ejected from the opening of the extinguishing agent storage case 26 is sufficiently suppressed, and it is ejected to the outside from the ejection port 14 to the secondary. There is no risk of fire.

  FIG. 4 is a circuit diagram showing an embodiment of the ignition circuit unit 32 of FIG. In FIG. 4, the ignition circuit unit 32 is connected to the heat sensing cable 20 laid in the monitoring area by the connector 16. The ignition circuit unit 32 is provided with a heater drive circuit including a transistor Q1, a relay A, and resistors R1, R2, and R3.

  That is, the transistor Q1 connects the divided voltage of the resistors R1 and R2 to the base via the resistor R3, and the power supply voltage is always applied to the heat sensing cable 20 via the resistors R1 and R2. .

  The transistor Q1 is a PNP transistor, and a relay A is connected to the collector side as a load. In the normal monitoring state, the heat sensing cable 20 is in an open state with an insulation coating of two signal lines such as vinyl. Therefore, no current flows from the power source, and the transistor Q1 is in the off state because the voltage between the emitter and the base is 0 volts.

  The relay A is connected to the heater 30 via the normally open relay contact a1. Further, the normally open relay contact a2 of the relay A is connected between the emitter and collector of the transistor Q1 to form a latch circuit. Furthermore, a relay contact a3 for transfer is connected to the transfer terminal 52.

  When the vinyl which is the insulation coating of the heat sensing cable 20 is melted by the heat from the fire and the two signal lines are brought into contact with each other, a current flows through the heat sensing cable 20 through the resistors R1 and R2. Therefore, a bias voltage is applied between the emitter and base of the transistor Q1 due to the voltage generated in the resistor R1, thereby turning on the transistor Q1 and operating the relay A.

  When the relay A is activated, the normally open relay contact a1 is closed and the heater 30 is energized. As shown in FIG. 2B, the solid fire extinguisher 28 is ignited by heating by energizing the heater 30, and the solid fire extinguisher 28 is burned. The aerosol is generated by, and ejected to the alert area.

  Further, the relay contact a2 is closed by the operation of the relay A, so that the relay A is latched in the operation state, thereby preventing the malfunction due to the fluctuation of the short circuit state of the heat sensing cable 20.

  Further, when the relay contact a3 is closed, a transfer signal indicating that the fire extinguishing operation has been performed is output to the outside. The transfer signal from the smoke-extinguishing device 10 of the present embodiment enables appropriate display and control corresponding to the monitoring area in which the smoke-extinguishing device 10 is incorporated. When the smoke prevention device 10 of the present embodiment is incorporated in, for example, a copying machine used as an office device, a fire occurs in the copying machine by using a sound output unit or a display unit of the copying machine by a transfer signal. A fire extinguishing operation is alarmed, and at the same time, the main power supply to the heater that caused the fire is automatically shut off.

  FIG. 5 is a circuit diagram showing another embodiment of the ignition circuit unit 32 of FIG. 2, and is characterized in that transistor driving is used instead of the relay of FIG. In FIG. 5, the ignition circuit unit 32 is connected to the heat sensing cable 20 wired to the monitoring area by the connector 16. The ignition circuit section 32 is provided with a heater drive circuit including transistors Q1, Q2, and Q3, resistors R1, R2, R3, R4, R5, and R6.

  That is, the transistor Q1 connects the divided voltage of the resistors R1 and R2 to the base via the resistor R3, and the power supply voltage is always applied to the heat sensing cable 20 via the resistors R1 and R2. .

  The transistor Q1 is a PNP transistor, and the transistor Q2 is connected to the collector side as a load. A heater 30 is connected to the collector of the transistor Q2 through the resistor R6 from the power source Vcc. The transistor Q3 is connected in parallel to latch the transistor Q1, and its base is connected between the resistor R6 and the heater 30 via the resistor R7.

  In the normal monitoring state, the heat sensing cable 20 is in an open state with an insulation coating of two signal lines made of vinyl or the like, so that no current flows from the power source, and the voltage between the emitter and base of the transistor Q1 is zero volts. Therefore, the transistor is turned off and the transistor Q2 is also turned off. The transistor Q3 is also off because the emitter-base is zero volts.

  When the vinyl which is the insulation coating of the heat sensing cable 20 is melted by the heat from the fire and the two signal lines are brought into contact with each other, a current flows through the heat sensing cable 20 through the resistors R1 and R2. For this reason, a bias voltage is applied between the emitter and base of the transistor Q1 due to the voltage generated in the resistor R1, thereby turning on the transistor Q1 and turning on the transistor Q2, thereby energizing the heater 30, as shown in FIG. As described above, the solid fire extinguisher 28 is ignited, aerosol is generated by the combustion of the solid fire extinguisher 28, and the aerosol is ejected to the alert area.

  In addition, when the transistor Q2 is turned on, the heater 30 is energized to turn on the transistor Q3 by applying a bias voltage between the emitter and base of the transistor Q3. By turning on the transistor Q3, the transistor Q2 is kept on to prevent malfunction.

  FIG. 6 is an explanatory diagram showing the operation of this embodiment. The solid fire extinguishing agent 28 is ignited and burned by the energization heating of the heater 30 that detects the short circuit state due to the fire of the heat sensing cable 20 by the ignition circuit unit 32 shown in FIG. 4 or FIG. 5, and fire extinguishing aerosol is generated. .

  The aerosol generated by the combustion of the solid fire extinguishing agent 28 is ejected from the opening at the rear of the fire extinguishing agent storage case 26 and then moves forward through the flue 38 which is a surrounding cavity, and the front where the connector 16 is disposed. The aerosol 48 is ejected from the nozzle 14 to the monitoring area.

  At this time, the flame of combustion by the solid fire extinguishing agent 28 is ejected rearward, and is not ejected to the outside by bypassing the flue 38 that is turned forward. Further, the extinguishing agent storage case 26 is heated by the combustion of the solid extinguishing agent 28. However, the contact with the housing body 24 is supported by the mounting piece 36 and the extending piece 44 in a substantially floating state, and the contact portion is small. The temperature rise of the outer casing body 24 due to is suppressed.

  FIG. 7 is a circuit diagram showing another embodiment of the ignition circuit section 32 of FIG. In FIG. 7, when the ignition circuit unit 32 of this embodiment is a heater drive circuit including the transistor Q1, the relay A, the resistors R1, R2, R3, and the normally open relay contacts a1, a2, a3 shown in FIG. Furthermore, a heater drive stop circuit including a transistor Q2, a relay B, a normally closed relay contact b1, resistors R4, R5, R6, and an ignition sensor 50 is provided.

  In the heater drive stop circuit, a bias circuit including resistors R4, R5, and R6 is provided between the emitter and base of the transistor Q2, and the ignition sensor 50 is connected in parallel with the resistor R4. The ignition sensor 50 is disposed in the vicinity of the ignition part of the solid fire extinguishing agent 28 stored in the extinguishing agent storage case 26 shown in FIG. A thermal fuse is used that disconnects the circuit when it receives heat.

  The transistor Q2 is a PNP transistor, and the relay B is connected to the collector thereof. The relay B has a normally closed relay contact b1, and the normally closed relay contact b1 is connected in series to a relay A provided in the heater drive circuit.

  The operation of the ignition circuit unit 32 in FIG. 7 is as follows. When the heat sensing cable 20 installed in the monitoring area receives heat from a fire and the vinyl, which is an insulation coating, melts and the two signal lines are short-circuited, current flows through the resistors R1 and R2. As a result, the transistor Q1 is turned on, the relay A is operated, the normally open relay contact a1 is closed, the heater 30 is energized, the solid fire extinguisher 28 is ignited and burned, and aerosol is generated. At the same time, the normally open relay contact a2 is closed and the relay A is latched. Further, the relay contact a3 is closed and a transfer signal is output.

  On the other hand, the transistor Q2 of the heater drive stop circuit is normally in an off state with the emitter and base being zero volts due to a short circuit of the resistor R4 by the ignition sensor 50, and the relay B is inoperative.

  In this state, when the solid fire extinguisher 28 burns by energization of the heater 30 by fire detection, the circuit of the ignition sensor 50 is opened due to the melting of the temperature fuse or the like by receiving heat from the combustion. When the ignition sensor 50 opens the circuit, the voltage generated between the resistors R4 is biased between the emitter and base of the transistor Q2, and the relay B is activated.

  When the relay B is operated, the normally closed relay contact b1 is opened, and the relay A is restored from the previous operating state to the non-operating state. For this reason, the normally open relay contact a <b> 1 is opened, and energization to the heater 30 is stopped.

  That is, according to the ignition circuit section 32 of FIG. 7, once the solid fire extinguisher is combusted by energization heating of the heater 30, combustion is detected by the ignition sensor 50, and the energization to the heater 30 is stopped. It is preventing that the state which heated 30 is continued.

  FIG. 8 is a circuit diagram showing another embodiment of the ignition circuit section 32 of FIG. 2, and is characterized in that transistor driving is used instead of the relay of FIG. In FIG. 8, the ignition circuit unit 32 is the same as the ignition circuit unit 32 of FIG. 5 except that the ignition sensor 50 is provided between the collector of the transistor Q1 and the resistor R4, and the heat sensing cable 20 is caused by a fire. The energization operation of the heater 30 by turning on the transistors Q1 and Q2Q3 when the vinyl which is the insulation coating melts due to heat and the two signal lines are short-circuited is the same.

  When the solid fire extinguisher 28 burns by energization of the heater 30, the circuit of the ignition sensor 50 is opened due to heat generated by the combustion, the transistor Q2 is turned off, the energization to the heater 30 is stopped, and unnecessary. The state where the heater 30 is heated is prevented from continuing.

  FIG. 9 is an explanatory view showing a specific example of the flame ejection preventing member 64 disposed in the flue 38 of the present embodiment. The flame ejection preventing member 64A in FIG. 9A suppresses flame ejection by arranging a plurality of small-diameter pipes 66 such as glass and porcelain. The flame ejection preventing member 64B in FIG. 9B suppresses flame ejection by separating and arranging two wire meshes. The flame ejection preventing member 64A shown in FIG. 9C suppresses flame ejection by arranging a plurality of balls 70 such as glass and porcelain. Further, the flame ejection preventing member 64D of FIG. 9D suppresses the ejection of flame by arranging a plurality of balls 70 such as glass and porcelain between the two metal nets 68.

  Here, the smoke-extinguishing apparatus of the present invention is installed in a panel such as a control panel or a distribution panel, a server machine, a draft chamber for chemical experiments, an engine room, a copy machine, a printer, a cable duct, a motor, In various places such as battery units, garbage trucks, closed spaces such as cargo spaces, etc., especially when installed inside devices such as distribution boards and copiers, the internal structure is complex and Even in an intricate enclosed space, the heat sensing cable 20 can be easily and easily routed near an internal wiring or a device that may cause a fire to quickly and reliably detect a fire.

  In addition, for a wiring portion such as a cable duct that may cause a fire, by installing the heat sensing cable 20 of this embodiment together with the wiring to be monitored, the cable can be compared with the conventional spot type fire sensing. At the initial stage of the fire that is not accompanied by an abnormal heat generation due to heat generation, it is possible to detect the fire with the heat sensing cable 20 and reliably extinguish the fire due to the generation of aerosol.

  4 and 6, the relay circuit using the relay contacts is provided. However, the transistor-driven ignition circuit shown in FIGS. 5 and 7 is also provided with a transistor drive. You may make it provide.

  Moreover, in the ignition circuit part of this embodiment, when a short circuit of the heat sensing cable due to a fire is detected, the solid fire extinguisher is immediately ignited by energizing the heater, but a short circuit detection signal of the cable is output to the outside. It is possible to control such that an alarm is given and a solid fire extinguisher is ignited by energizing the heater after a predetermined delay.

  For example, when the smoke-extinguishing device of this embodiment is incorporated in a copy machine, a fire alarm is displayed when a short-circuit detection signal of a cable is received by the control unit of the copy machine. A voice message such as “Fire extinguishing is started after 10 seconds” may be output, and when 10 seconds have elapsed, the solid fire extinguisher is ignited by energizing the heater, and aerosol may be ejected.

  Further, in the present embodiment, as long as the heat sensing cable 20 is used for fire detection in the monitoring area, the structure on the housing 12 side is not limited to the above embodiment, and an appropriate housing structure can be taken. .

  In the above embodiment, the housing 12 is made of metal, but it is not necessarily made of metal if a heat insulating material is attached to the outside or inside of the housing.

  Further, the present invention includes appropriate modifications that do not impair the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

10: Smoke-extinguishing device 12: Housing 14: Spout 15: Support frame 16: Connector 18: Plug 20: Thermal sensing cable 22: Power line 24: Housing body 26: Extinguishing agent storage case 28: Solid extinguishing agent 30: Heater 32: Ignition circuit 34: Rear opening 36: Support piece 38: Flue 40, 42: Mounting piece 44: Extension piece 46: Storage chamber 50: Ignition sensor 52: Transfer terminal 64, 64A to 64D: Flame ejection Prevention member A, B: Relay a1, a2: Normally open relay contact b1: Normally closed relay contact Q1-Q3: Transistors R1-R7: Resistance

Claims (5)

A housing body having a fire-extinguishing aerosol outlet opening forward ;
A fire extinguisher storage case that is incorporated inside the housing body with a surrounding space apart, and that has an opening at the rear to store a solid fire extinguisher,
A flue structure that forms a flue that guides the fire- extinguishing aerosol ejected from the opening from the back of the fire-extinguishing agent storage case to the spout through the surroundings ;
A flame ejection preventing member disposed in the flue;
A smoke-extinguishing device characterized by comprising.
2. The smoke-extinguishing apparatus according to claim 1, wherein the flame ejection preventing member is a wire mesh or a filter.
2. The smoke-extinguishing apparatus according to claim 1, wherein the flame-spouting prevention member includes a plurality of glass or porcelain small-diameter pipes.
2. The smoke-extinguishing apparatus according to claim 1, wherein the flame ejection preventing member includes a plurality of glass or porcelain balls.
  2. The smoke-extinguishing apparatus according to claim 1, wherein the flame ejection preventing member includes a plurality of glass or porcelain balls disposed between two metal meshes.

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