JP2012055360A - Fire extinguisher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire extinguisher that causes less secondary damage by mixing inert gas and a fire extinguishing solution in a mixing nozzle to discharge micro mist.SOLUTION: The fire extinguisher includes: a body container 12 which is equipped with a gas housing part 16 formed by filling a compressed inert gas 18 into a body container 15 and a liquid housing part 32 storing a fire extinguishing solution 14; a pressurization mechanism for pressurizing the liquid housing part 32 by the inert gas 18; a hose 38 equipped with a gas flow channel 28 for allowing the inert gas 18 to flow out and a liquid flow channel 34 for allowing the fire extinguishing solution 14 to flow out, separately; a discharge operation mechanism for opening the gas housing part 16 by lever operation to allow not only the inert gas 18 but also the fire extinguishing solution 14 pressurized by the inert gas 18 to flow out; and the mixing nozzle 44 mounted on the leading end of the hose 38 and mixing the inert gas 18 and the fire extinguishing solution 13, which are sent by the gas flow channel 28 and the liquid flow channel 34, to discharge micro mist.

Description

The present invention relates to a fire extinguisher that discharges a fine spray mixed with an inert gas to extinguish a fire.

  Conventionally, portable fire extinguishers are mainly used for the initial fire extinguishing in a room, but secondary damage, that is, water damage due to water discharge, damage to equipment and damage due to fire extinguishing agents such as bubbles, etc. have occurred.

  In particular, electrical equipment fires are extinguishing fires to facilities equipped with generators, transformers, and other similar electrical equipment, precision equipment such as computers, etc., and leakage and recovery as a secondary disaster Ease of handling is also required.

  Carbon dioxide fire extinguishers extinguish asphyxiation with carbon dioxide as a fire extinguisher, and after being released, there is no residue, an inert and stable gas that does not cause chemical changes in electrical equipment, and has high insulation. It is a fire extinguisher that is suitable for electric fires without worrying about leakage or electric shock.

  A carbon dioxide fire extinguisher uses liquefied carbon dioxide compressed at high pressure as a fire extinguisher and releases it at its own pressure. Its structure has a trumpet-shaped horn, a cylinder filled with high-pressure carbon dioxide, a discharge head connected to the cylinder, and a unique trumpet shape that holds the carbon dioxide released from the discharge head toward the fire source. A horn having a shape is provided. At the time of discharge, dry ice and mist are generated (see Patent Document 1).

In addition, as a fire extinguisher, water loss due to water discharge is achieved by using a low-pressure water tank and a high-pressure gas cylinder to release high-pressure gas from the nozzle and simultaneously using the gas pressure to feed water into the nozzle and supplying water to the gas. There is also an example of a high-pressure water spray fire extinguishing device that is sucked into a very fine spray and continuously discharged from a nozzle (see Patent Document 2, etc.).

JP 7-51398 A Japanese Patent Laid-Open No. 11-47298

  However, in such a conventional carbon dioxide fire extinguisher, carbon dioxide is characterized by the absence of fouling such as deterioration and container corrosion over a long period of time. Cannot be installed. In addition, it is not suitable for fire A (normal fire).

An object of the present invention is to provide a fire extinguisher that can appropriately extinguish without adversely affecting electrical equipment.

The present invention provides a fire extinguisher,
A main body container containing a fire extinguishing liquid, comprising a gas storage part enclosing a compressed inert gas,
An inert gas that is disposed at the opening of the main body container and takes out the fire extinguishing liquid from the liquid storage part, a gas outlet that takes out the inert gas from the gas storage part, and an inert gas from the gas storage part to the liquid storage part A lid member provided with a pressurized gas inlet for introducing a pressurized gas,
A hose connected to the liquid outlet and the gas outlet of the lid member, and having a gas flow path and a liquid flow path;
A mixing nozzle that is attached to the tip of the hose and forms and discharges a fine spray by mixing the inert gas sent by the gas flow path and the fire extinguishing liquid sent by the liquid flow path;
Release operation provided with a lever for releasing a compressed inert gas by opening a sealing member provided in a gas outflow portion of the gas storage portion by an opening member and for discharging a fire extinguishing liquid pressurized by the inert gas A mechanism part;
It is provided with.

The present invention also provides:
A body container enclosing a compressed inert gas;
A liquid storage part that is provided in the main body container and stores the fire extinguishing liquid so as to be able to flow out of the discharge pipe by pressurizing it through a freely-sealing seal lid;
A lid member that is disposed at the opening of the main body container and includes a gas outlet for taking out the inert gas from the main body container to the outside, a liquid outlet for taking out the extinguishing liquid from the pressurized liquid storage portion, and
A hose connected to the liquid outlet and the gas outlet of the lid member and provided with a liquid passage and a gas passage;
A mixing nozzle that is attached to the tip of the hose and forms and discharges a fine spray by mixing the inert gas sent by the gas flow path and the fire extinguishing liquid sent by the liquid flow path;
The sealing material provided in the gas outflow part of the main body container and the sealing material provided in the liquid outflow part of the liquid storage part are opened by the opening member to let out the inert gas and the fire extinguishing is pressurized by the inert gas. A discharge actuating mechanism having a lever for discharging the liquid;
It is provided with.

  By providing an orifice for adjusting the flow rate in one or both of the gas flow path and the liquid flow path, the atomization action can be appropriately performed.

  A fire extinguishing liquid can be provided with insulation more as ultrapure water, pure water, or distilled water.

The average particle size of the fine spray discharged from the nozzle is 20 μm to 200 μm.

  According to the fire extinguisher of the present invention, when the lever is operated, the fine spray generated by mixing the fire extinguisher contained in the main body container by supplying to the nozzle with a hose having a flow path separating the inert gas is generated. Since it was made to discharge | release, a fire can be efficiently suppressed and extinguished by the synergistic effect of the suffocation effect by an inert gas, and the cooling effect by the atomized fire extinguishing liquid.

  The average particle size of the fine spray produced by mixing with the inert gas discharged from the nozzle occupies most of 20 μm to 50 μm, and when the particle size is 50 μm or less, it is called so-called dry fog or semi-dry fog. Since the fine particles are repelled without being ruptured by the collision, they do not get wet, and even if water is used as a fire extinguishing liquid, the wetting action does not work on the electric equipment, and it is suitable for extinguishing the electric equipment.

  In addition, when water having high insulation properties such as distilled water, pure water, or ultrapure water is used as water, ionization due to impurities is suppressed, so that the effect is further enhanced.

  The fire extinguisher according to the present invention exhibits a suffocation action and a cooling action by releasing high-pressure inert gas and atomized water, and in addition to C fire (electric fire), A fire (normal fire) and B It is suitable for both fires (oil fires) and further reduces the impact on the human body and nature.

  In addition, nitrogen is used as the inert gas, but if carbon dioxide is used instead, the cooling effect is enhanced by the release of carbon dioxide converted into dry ice, and a more compact fire extinguisher is possible.

  In addition, when carbon dioxide is used, there is an effect that the influence on the human body and the environment can be reduced by reducing the amount of carbon dioxide released.

Furthermore, an orifice that adjusts the pressure balance can be provided in either one or both of the gas flow path and the liquid flow path to discharge a fine spray having an ideal flow diameter and flow rate.

Sectional drawing which showed embodiment of the fire extinguisher by this invention 1 is a cross-sectional view showing the upper part of the main body of FIG. Sectional drawing which showed other embodiment of the main body upper part of FIG. Explanatory drawing which showed the nozzle structure used for the fire extinguisher of this invention Sectional drawing which showed other embodiment of the fire extinguisher by this invention Sectional view showing the upper part of the main body of FIG. Sectional drawing which showed other embodiment of the fire extinguisher by this invention Explanatory drawing which showed the orifice provided in embodiment of FIG.

  1 to 4 are sectional views showing an embodiment of a fire extinguisher 10 known as a pressurizing type that is pressurized only during a fire extinguishing operation according to the present invention.

  In FIG. 1, a fire extinguisher 10 according to the present invention has a lid member 15 disposed in an upper opening of a main body container 12, and the main body container 12 stores gas using a high-pressure gas container filled with a compressed inert gas 18. The liquid storage part 32 which stored the part 16 and the fire extinguishing liquid 14 is provided.

  The gas storage unit 16 is filled with an inert gas 18 compressed at a high pressure, for example, nitrogen gas. In this embodiment, water is used as the liquid filling the main body container 12 as the fire extinguishing liquid 14.

  A discharge pipe 36 is lowered at the lower portion of the lid member 15 and the opening at the lower end is closed by a sealing plate 42 so that the fire extinguishing liquid 14 does not flow out. The sealing plate 42 is broken by receiving pressurization of the fire extinguishing liquid 14 by introducing the inert gas 18.

  Further, the cover member 15 is provided with a hose connection port 35, and a gas outlet 30 and a liquid outlet 40 are opened in the hose connection port 15. A gas flow path 28a from the gas storage section 16 using a high-pressure gas container communicates with the gas outlet 40, and the inert gas 18 is used as a pressurized gas in the liquid storage section 32 by branching the gas flow path 28a. A pressurized gas inlet 26 for introduction is provided. A liquid flow path 34 a communicates with the liquid outlet 40 from a connection portion of the discharge pipe 36 that is lowered to the liquid storage portion 32.

  A hose 38 is connected to the hose connection port 35 of the lid member 15. The hose 38 has a double tube structure in which a gas flow path 28 for flowing out the inert gas 18 and a liquid flow path 34 for flowing out the fire extinguishing liquid 14 are separately provided. A mixing nozzle 44 is attached to the tip of the hose 38, and a fine spray is formed and released by mixing the inert gas 18 sent by the gas flow path 28 and the fire extinguishing liquid 14 sent by the liquid flow path 34. .

  The mixing nozzle 44 is an external mixing type two-fluid nozzle that discharges the compressed inert gas 18 from the internal flow path and the fire extinguishing liquid 14 from the surrounding flow path in order to atomize the fire extinguishing liquid 14. It has a structure.

  The average particle size of the fine spray discharged from the mixing nozzle 44 by mixing with an inert gas is 10 μm to 200 μm, and the fine spray having a particle size in the vicinity of 10 μm to 50 μm is released. When the particle size is 50 μm or less, it is called so-called dry fog or semi-dry fog, and the fine particles are repelled without being ruptured by collision, so that they do not get wet. Wetting action does not work and is suitable for fire extinguishing to electrical equipment.

  The release operation mechanism is composed of a lever 46 and a sealing member 22, and the compressed inert gas 18 is released by opening the seal member 20 provided at the outlet of the gas storage unit 16 by the operation of the lever 46. The fire extinguishing liquid 14 pressurized by the inert gas 18 is caused to flow out from the liquid outlet 40 of the discharge pipe 36 while flowing out from the gas outlet 30 and introduced into the liquid storage portion 32 through the pressurized gas inlet 26.

  The discharge operation mechanism unit is further provided with a lock lever 48 and a safety plug 50 so that the lever 46 is locked and cannot be moved in order to prevent a malfunction in the storage state.

  FIG. 2A is a cross-sectional view showing in detail the internal structure of the upper part of the fire extinguisher shown in FIG. When the sealing material 20 provided in the outflow part of the gas storage part 16 is broken by the breaking member 22 and the sealed state is released, the inert gas 18 in the gas storage part 16 flows in the direction of the arrow a. Then, it flows from the pressurized gas inlet 26 into the main body container 12.

  As a result, the fire extinguishing liquid 14 is pressurized, the sealing plate 42 at the tip of the discharge pipe 36 shown in FIG. 1 is broken by the pressurized fire extinguishing liquid 14, and flows from the discharge pipe 36 through the liquid flow path 34a. It is sent to the liquid flow path 34 of the hose 38. At the same time, the inert gas 18 flows through the gas flow path 28a in the direction of the arrow b and is sent to the gas flow path 28 of the hose 38.

  FIG. 2B shows a cross-sectional shape of the hose 38, which is a double pipe structure in which the liquid flow path 34 and the gas flow path 28 are doubled so that the fire extinguishing liquid 14 and the inert gas 18 flow separately. In this embodiment, the inert gas flows through the gas flow path 28 inside the hose 38, and the fire extinguishing liquid 14 flows through the liquid flow path 34 outside.

  The external mixing method of the fire extinguishing liquid 14 and the inert gas 18 at the mixing nozzle 44 is such that any flow path is extinguished between the flow path inside the hose 38 having a double flow path and the flow path formed therearound. The liquid 14 and the inert gas 18 may be allowed to flow. In FIG. 1, the embodiment in which the inert gas 18 is allowed to flow in the internal flow path and the fire extinguishing liquid 14 is flowed to the surrounding flow path has been described. It may be reversed.

  FIG. 3 shows that, in the mixing nozzle 44, the fire extinguishing liquid 14 flows out from the nozzles inside, and the inert gas 18 flows out from the surroundings to make the fire extinguishing liquid 14 atomized, contrary to the case of FIG. A cross-sectional view of the superstructure of the vessel 10 is shown.

  In FIG. 3, when the sealing material 20 is opened by the tearing member 22, the inert gas 18 in the gas storage unit 18 flows in the direction of arrow a and flows into the main body container 12 from the pressurized gas inlet 26. Pressurize the fire extinguisher. At the same time, the inert gas 18 also flows in the gas flow path 28a in the direction of the arrow b.

  In the present embodiment, the hose connection port 35 of the lid member 15 has a gas outlet 30 opened outside and a liquid outlet 40 opened inside, contrary to the embodiment of FIG. . The hose 38 connected to the hose connection port 15 has a structure in which the fire extinguishing liquid 14 flows through the liquid flow path 34 inside the hose 38 and the inert gas 18 flows through the liquid flow path 28 outside the hose 38.

  Further, the mixing method of the fire extinguishing liquid 14 and the inert gas 18 at the mixing nozzle includes an internal mixing type and a collision type in addition to the external mixing type shown in FIG.

  FIG. 4 shows the structure of a two-fluid nozzle showing a mixing method other than the external mixing type. FIG. 4A shows the internal mixing type nozzle 54. The internal mixing type nozzle 54 has a structure in which the inert gas 18 flows in the center inside the nozzle and the fire extinguishing liquid 14 flows in the outer periphery inside the nozzle. The inert gas 18 and the fire extinguishing liquid 14 are mixed inside the nozzle, and the fire extinguishing liquid 14 atomized together with the inert gas 18 is discharged to the outside of the nozzle.

  As shown in FIG. 4B, the collision type nozzle 56 has a structure in which the atomized fire extinguishing liquids 14 collide with each other and are discharged with the external mixing type nozzles facing diagonally. Since the fire-extinguishing liquid 14 once atomized is further collided, it is possible to further homogenize and atomize the fine particles.

  FIG. 5 is an embodiment of a fire extinguisher 60 known as a pressure accumulation type in which the fire extinguishing liquid 14 is pressurized during storage according to the present invention.

  In FIG. 5, the inside of the main body container 12 is a gas storage portion 16, and the compressed inert gas 18 is sealed inside. The discharge pipe 36 is lowered from the lid member 15 of the main body container 12, and the extinguishing liquid 14 is stored inside by fixing and supporting the cylindrical container 61 constituting the liquid storage portion 32 at the tip of the discharge pipe 36.

  A seal lid 64 is disposed in the cylindrical container 61 so as to freely move up and down along the discharge pipe 36. The seal lid 64 has a pressurizing structure that pressurizes the fire extinguishing liquid 14 with the pressure of the inert gas 18 while sealing the fire extinguishing liquid 14 in the liquid storage portion 32. The discharge pipe 36 has a suction port 36a in the lower part and the upper part is sealed with a sealing material 20-2. Note that the cylindrical container 61 constituting the liquid storage unit 32 may be fixed by lowering the support member from the lid member 15 without using the discharge pipe 36.

  A gas extraction pipe 66 is arranged coaxially with the discharge pipe 36 provided at the lower part of the lid member 15, and the upper part of the gas extraction pipe 66 is sealed with a sealing material 20-1. A hose connection port 35 is provided on the left side of the lid member 15. A liquid outlet 40 communicating with the liquid channel 34 a is opened inside, and a gas outlet 30 communicating with the gas channel 28 a is opened outside thereof. is doing.

  A hose 38 having a liquid flow path 34 and a gas flow path 28 is connected to the hose connection port 35, and the inert gas 18 and the fire extinguishing liquid 14 individually sent by the mixing nozzle 44 attached to the tip of the hose 38. A fine spray is formed and released by mixing.

  The discharge operation mechanism is composed of a lever 46 and smashing members 22-1 and 22-2, and a seal member 20-1 provided on the outlet side of the gas outlet 30 and a seal provided on the outlet side of the discharge pipe 36. The material 20-2 is broken and opened by pushing the breaking member 22-1 and the breaking member 22-2, and the inert gas 18 flows out from the gas outlet 30 and is pressurized by the inert gas 18. The fire extinguishing liquid 14 is discharged from the liquid outlet 40 and sent to the hose 38.

  FIG. 6 is an enlarged cross-sectional view showing the internal structure of the upper part of the main body container 12 of FIG. In FIG. 6, the upper portion of the discharge pipe 36 is sealed with a sealing material 20-1 to seal the liquid storage portion 32. The inert gas 18 flows out from the gas extraction pipe 66 at the upper part of the container body 12, and the upper part of the gas extraction pipe 66 is sealed with a sealing material 20-2.

  The sealing material 20-1 and the sealing material 20-2 are broken when the breaking member 22-1 and the breaking member 22-2 provided at opposing positions penetrate.

  After the sealing material 20-1 and the sealing material 20-2 are ruptured, the fire extinguishing liquid 14 passes through the liquid flow paths 34a and 34 of the lid member 15 and the hose 38, and the inert gas 18 is supplied to the gas flow paths 28a and 28. Through and to the mixing nozzle 44. The structure of the hose 38 is the same as that shown in FIG.

  The fire extinguishing operation when a fire occurs is the same as that of the pressurized fire extinguisher 10, and the release operation mechanism allows the lever lever to be operated by removing the safety plug 50 so that the lever can be operated. The seal member 20-1 and the seal member 22-2 are simultaneously pressed down, and the seal material 20-1 and the seal material 20-2 are broken.

  Although the structure of the mixing nozzle 44 shows the external pressurization type structure, the structure of the two-fluid nozzle shown in FIG. The other behavior is the same as that of the pressure type.

  FIG. 7 shows the discharge pipe 36 and the pressure accumulating fire extinguisher 60 according to the present invention in order to balance the pressure of the inert gas 18 and the pressurized fire extinguishing liquid 14 and to enable effective atomization and discharge. In this embodiment, an orifice 72 and an orifice 74 are attached to the gas extraction pipe 66. This is effective when the pressure of the fire extinguishing liquid 14 and the inert gas 18 is different, and the flow rate can be controlled by the orifice. It is not necessary to provide the orifices in both flow paths, and the purpose is to adjust the flow rate while maintaining pressure balance, so only one flow path may be provided.

  FIG. 8 shows a specific example of the orifice. FIG. 8A shows a narrow tube orifice 76. The flow rate is controlled by a narrow tube part 78 having a reduced diameter channel. FIG. 8B shows an example of a porous orifice. The flow rate is controlled by a porous portion 82 in which small holes are arranged.

  The pressure-accumulating fire extinguisher 60 uses carbon dioxide or nitrogen gas as the inert gas 18, so that not only external discharge as a fire extinguisher but also a liquid fire extinguisher is indirectly pressurized through a container to the fire extinguishing liquid 14. On the other hand, it can exert a releasing action. In addition, the cooling effect by atomization of water is added to the suffocation effect of carbon dioxide, so that the fire extinguisher having the highest fire extinguishing effect can be realized as the fire extinguisher according to the present invention.

  In this embodiment, normal water is used as the fire extinguishing liquid, but distilled water, pure water, or ultrapure water may be used to suppress ionization due to impurities.

  Moreover, since only a small amount of emission is required compared with the emission of carbon dioxide or nitrogen gas alone, a smaller fire extinguisher can be realized with the same fire extinguishing performance.

  In addition, when carbon dioxide is used as an inert gas, there is a problem of oxygen deficiency, but compared to conventional carbon dioxide fire extinguishers, the amount of carbon dioxide released is reduced by releasing a fine spray by mixing with water. And can sufficiently reduce the problem of oxygen deficiency.

  Moreover, in said embodiment, although the double pipe structure is shown as a hose, it is good also as a hose structure which bundled and coat | covered two hoses which comprise a liquid flow path and a gas flow path separately.

  In addition, the size of the fire extinguisher can be set to an appropriate capacity such as a small size, a medium size, and a large size as required.

The present invention is not limited to the above-described embodiment, includes appropriate modifications without impairing the object and advantages thereof, and is not limited by the numerical values shown in the above-described embodiment.

DESCRIPTION OF SYMBOLS 10, 60: Fire extinguisher 12: Main body container 14: Fire extinguishing liquid 15: Lid member 16: Gas storage part 18: Inert gas 20, 20-1, 20-2: Sealing material 22, 22-1, 22-2: Breaking member 26: pressurized gas inlets 28, 28a: gas passage 30: gas outlet 32: liquid storage portion 34, 34a: liquid passage 35: hose connection port 36: discharge pipe 38: hose 40: liquid removal Outlet 42: Sealing plate 44: Mixing nozzle 54: Internal mixing type nozzle 56: Collision type nozzle 61: Cylindrical container 64: Seal lid 66: Gas extraction pipes 72, 74: Orifice 76: Narrow pipe orifice 80: Porous orifice

Claims (5)

A main body container containing a fire extinguishing liquid, comprising a gas storage part enclosing a compressed inert gas,
A liquid outlet that is disposed in the opening of the main body container and takes out the fire extinguishing liquid from the liquid storage part, a gas outlet that takes out the inert gas from the gas storage part, and a liquid storage part from the gas storage part A lid member having a pressurized gas inlet for introducing an inert gas as a pressurized gas;
A hose connected to the liquid outlet and the gas outlet of the lid member, and having a gas flow path and a liquid flow path;
A mixing nozzle that is attached to the tip of the hose and forms and discharges a fine spray by mixing the inert gas sent by the gas flow path and the fire extinguishing liquid sent by the liquid flow path;
Release operation provided with a lever for releasing a compressed inert gas by opening a sealing member provided in a gas outflow portion of the gas storage portion by an opening member and for discharging a fire extinguishing liquid pressurized by the inert gas A mechanism part;
A fire extinguisher, characterized by providing.
A body container enclosing a compressed inert gas;
A liquid storage part that is provided in the main body container and stores the fire extinguishing liquid so as to be able to flow out of the discharge pipe by pressurizing it through a freely-sealing seal lid;
A lid member provided at the opening of the main body container, and having a gas outlet for taking out the inert gas from the inside of the main body container, and a liquid outlet for taking out the extinguishing liquid from the pressurized liquid storage part; ,
A hose that is connected to the liquid outlet and the gas outlet of the lid member and includes a liquid channel and a gas channel;
A mixing nozzle that is attached to the tip of the hose and forms and discharges a fine spray by mixing the inert gas sent by the gas flow path and the fire extinguishing liquid sent by the liquid flow path,
The sealing material provided in the gas outflow part of the main body container and the sealing material provided in the liquid outflow part of the liquid storage part are opened by the opening member to allow the inert gas to flow out and are pressurized by the inert gas. A discharge actuating mechanism having a lever for letting out the fire extinguishing liquid;
A fire extinguisher, characterized by providing.
In the fire extinguisher according to claim 1 or 2,
A fire extinguisher characterized in that an orifice for adjusting the discharge amount is provided in one or both of the gas flow path and the liquid flow path.
The fire extinguisher according to claim 1 or 2, wherein the fire extinguishing liquid is ultrapure water, pure water or distilled water.
  The fire extinguisher according to claim 1 or 2, wherein the average particle size of the fine spray discharged from the nozzle is 20 µm to 200 µm.

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