JP6612173B2 - Fire extinguisher - Google Patents

Description

  The present invention relates to a fire extinguisher, and more particularly to a portable or semi-fixed fire extinguisher used for initial fire extinguishing.

  Conventionally, what uses liquid fire extinguishers and powder fire extinguishers, such as a water fire extinguisher, a foam fire extinguisher, and a powder fire extinguisher, is widely used as a portable or semi-fixed fire extinguisher used for initial fire extinguishing.

  By the way, a fire extinguisher that uses liquid or powder as a fire extinguisher has a simple structure of components such as a nozzle and a fire extinguisher container, is easy to handle, and is easy to store. Widely used.

  However, when a fire extinguisher that uses liquid or powder as the above extinguishing agent is used to extinguish the fire, the liquid or powder extinguishing agent will scatter and pollute the surrounding environment. Therefore, it cannot be used for fire extinguishing targets that do not want to be polluted, especially for equipment with electrical and electronic equipment such as computers, communication equipment, data centers, electrical equipment, etc. Could not be used.

  For this reason, these fire extinguishing targets include gas systems such as carbon dioxide, halides, inert gases (nitrogen gas, inert gas such as argon, etc., these gases being used alone or mixed, the same applies hereinafter). Fixed fire extinguishing equipment using a fire extinguisher has been used (for example, see Patent Document 1).

JP-A-8-299492 Japanese Patent No. 5502157 Japanese Patent No. 3398624 Japanese Patent No. 3058841

By the way, fixed fire extinguishing equipment that uses a gas fire extinguisher is one that fills the entire facility space where electrical and electronic equipment is installed with the gas fire extinguisher and extinguishes the fire. When performed, the subsequent treatment requires labor and expense, and thus it was not necessarily suitable for use in initial fire extinguishing.
That is, for example, when a nitrogen gas fire extinguishing equipment that uses nitrogen gas as a gas fire extinguisher, which is a conventional fire extinguishing equipment, is installed in a compartment having a volume of 1000 m ³ , 26 fire extinguishing agent storage containers with a capacity of 83 L are required. When the system starts up, all extinguishant storage containers are discharged, and the fire extinguishing agent concentration (extinguishing concentration) necessary for extinguishing the entire compartment is a system that extinguishes the fire. However, even a very small fire that can be handled by the initial fire extinguishing system will release all extinguishing agent storage containers when the system is started up. However, it was not necessarily suitable for use.

On the other hand, some portable or semi-fixed fire extinguishers suitable for initial fire extinguishing using gas-based fire extinguishing agents use carbon dioxide or halides as extinguishing agents. There was a problem that there were restrictions on the target and usage, and restrictions on halon regulations.
In addition, a portable or semi-fixed type fire extinguisher using inert gas as a fire extinguisher has a specific gravity smaller than that of other gas fire extinguishing agents such as carbon dioxide in the case of typical nitrogen gas as an inert gas. In addition, due to the high concentration of extinguishing agent necessary for extinguishing fires, even if nitrogen gas is radiated toward the fire extinguisher, it is not only difficult for nitrogen gas to diffuse quickly and concentrate on the fire extinguishing target. Nitrogen gas is easily blown away by the flow of airflow, it is difficult to maintain the necessary extinguishing agent concentration, and if there is a fire, it will be immediately reflared and it is difficult to obtain a fire extinguishing effect, so it has not been put to practical use It was.

  In view of the problems with the portable or semi-fixed fire extinguisher used for the conventional initial fire extinguishing, the present invention uses an inert gas or the like as a fire extinguisher that has no restrictions on the fire extinguishing target or usage due to the toxicity of the fire extinguishing agent on the human body. An object of the present invention is to provide a portable or semi-fixed type fire extinguisher suitable for initial fire extinguishing so that an effective fire extinguishing effect can be obtained by facilitating maintenance of the extinguishing agent concentration necessary for fire extinguishing.

  In order to achieve the above object, the fire extinguisher of the present invention is a fire extinguisher in which at least a nozzle portion for radiating the extinguishing agent is portable by a person so that the extinguishing agent can be radiated toward the extinguishing target. As the extinguishing agent, a gas-based extinguishing agent is supplied from an extinguishing agent supply means, and a metal porous member is disposed at the outlet of the flow path of the extinguishing agent formed in the nozzle part. And

  In this case, the extinguishing agent supply means includes an extinguishing agent storage container, and a nozzle portion is connected to the extinguishing agent storage container by rigid joining, so that the extinguishing agent storage container can be configured to be portable by a person.

  Further, the extinguishing agent supply means includes an extinguishing agent storage container, and the nozzle part is connected to the extinguishing agent storage container via a flexible hose, so that the extinguishing agent storage container can be fixedly disposed.

  A regulator having a pressure reducing function and / or a flow rate adjusting function can be provided in the flow path of the fire extinguisher from the fire extinguisher supply means to the nozzle portion.

  Further, the opening diameter of the nozzle portion can be set to 50 mm or more.

  Further, the nozzle part can be constituted by an assembly of a plurality of nozzle parts.

  Further, as the fire extinguisher, a gas fire extinguisher containing an inert gas as a main component can be used.

  According to the fire extinguisher of the present invention, in a fire extinguisher configured to be portable by a person at least to extinguish the fire extinguisher so that the fire extinguisher can be radiated toward the fire extinguisher, as the fire extinguisher, A fire extinguisher is used by supplying a gas-based fire extinguisher from the extinguishing agent supply means, and disposing a metal porous member at the outlet of the flow path of the extinguishing agent formed in the nozzle part. When extinguishing the fire, the extinguishing agent does not pollute the surrounding environment, and the extinguishing agent is not toxic to the human body. Effective fire extinguishing is achieved by allowing the fire extinguisher radiated toward the target to go straight without spreading, allowing the fire extinguisher to concentrate and radiate to the fire extinguisher, making it easier to maintain the necessary extinguishing agent concentration. Effective It is possible to provide a portable or semi-fixed fire extinguisher that is suitable for the initial fire extinguishing was to be.

  Further, the extinguishing agent supply means comprises an extinguishing agent storage container, and the nozzle part is connected to the extinguishing agent storage container by a rigid joint, and the extinguishing agent storage container is configured to be portable by a person so that it is easy to use. A portable fire extinguisher suitable for initial fire fighting can be provided.

  Further, the fire extinguishing agent supply means comprises a fire extinguishing agent storage container, the nozzle part is connected to the fire extinguishing agent storage container via a flexible hose, and the fire extinguishing agent storage container is fixedly disposed, A semi-fixed fire extinguisher suitable for large initial fire extinguishing can be provided.

  Further, an inert gas stored at a high pressure in the extinguishing agent storage container is provided as a main component by providing a regulator having a pressure reducing function and / or a flow rate adjusting function in the flow path of the extinguishing agent from the extinguishing agent supply means to the nozzle part. Gas-based fire extinguishing agent used as a material, for example, make the pressure (primary pressure) of nitrogen gas easy to use (secondary pressure), and the flow rate of the extinguishing agent is almost constant regardless of the pressure change of the extinguishing agent It can be held in a stable fire extinguishing.

  Moreover, the range which can maintain the extinguishing agent density | concentration required for extinction of the extinguishing agent radiated | emitted toward the fire extinguishing target can be set large by setting the opening diameter of the said nozzle part to 50 mm or more.

  In addition, by configuring the nozzle portion as an assembly of a plurality of nozzle portions, a range in which the extinguishing agent concentration necessary for extinguishing the extinguishing agent radiated toward the extinguishing target can be maintained large is set. Can do.

  Moreover, the said fire extinguisher can use suitably the gas-type fire extinguisher which has inert gas as a main component.

It is explanatory drawing which shows 1st Example of the fire extinguisher of this invention. The nozzle part of the same fire extinguisher is shown, (a) is the external view seen from the opening part side, (b) The external view seen from the connection part side, (c) is XX sectional drawing of (b). It is a graph which shows the result of having measured the relationship between the distance from a nozzle at the time of using various nozzles, and oxygen concentration. It is explanatory drawing which shows the modification of 1st Example of the fire extinguisher of this invention. It is explanatory drawing which shows 2nd Example of the fire extinguisher of this invention. It is explanatory drawing which shows the internal structure of the fire extinguisher storage container and container valve of 3rd Example of the fire extinguisher of this invention. It is explanatory drawing which shows the internal structure of the fire extinguisher storage container and container valve of the modification of 3rd Example of the fire extinguisher of this invention. It is explanatory drawing which shows the modification of 3rd Example of the fire extinguisher of this invention. It is explanatory drawing which shows 4th Example of the fire extinguisher of this invention. It is explanatory drawing which shows 5th Example of the fire extinguisher of this invention. It is explanatory drawing which shows an example of the structure of the fire extinguisher, (a) is the external view seen from the opening part side, (b) is YY sectional drawing of (a), (c) is an expanded sectional view of a nozzle part. It is. It is explanatory drawing which shows an example of the structure of the fire extinguisher, (a) is the external view seen from the opening part side, (b) is ZZ sectional drawing of (a), (c) is an expanded sectional view of a nozzle part. It is. It is explanatory drawing which shows the 1st reference example of the local fire extinguishing equipment using the nozzle part of the fire extinguisher of this invention. It is explanatory drawing which shows the 2nd reference example of the local fire extinguishing equipment using the nozzle part of the fire extinguisher of this invention.

  Embodiments of a fire extinguisher of the present invention will be described below with reference to the drawings.

1 to 2 show a first embodiment of the fire extinguisher of the present invention.
This fire extinguisher 1 uses nitrogen gas typical as an inert gas as a fire extinguisher (here, as the fire extinguisher, an inert gas such as argon other than nitrogen gas or a plurality of types of inert gas containing nitrogen gas) Inert gas mixed with can also be used.) As a fire extinguishing agent supply means to which the nozzle part 3 for emitting the extinguishing agent is connected so that the extinguishing agent can be emitted toward the extinguishing target. The fire extinguisher storage container 2 is configured to be portable by a person, and nitrogen gas is stored in the fire extinguisher storage container 2, and a metal porous material is provided at the outlet of the flow path of the fire extinguisher formed in the nozzle portion 3. The member 31 is disposed.

In this case, the fire extinguisher storage container 2 and the nozzle section 3 release the fire extinguisher which is widely used in fire extinguishers and fire extinguishing equipment using gas fire extinguishing agents such as the container valve 41, the opening device 42 and the regulator 43. Are connected by a rigid joint via a control device 4 for controlling the above.
Here, in addition to this pressure reducing function, the regulator 43 makes the pressure (primary pressure) of nitrogen gas stored in the extinguishing agent storage container 2 at a high pressure easy to use (secondary pressure). In addition, it has a pressure regulation function that keeps the secondary pressure constant, and a flow rate adjustment function that keeps the fire extinguisher flow rate almost constant regardless of changes in the pressure of the fire extinguisher so that stable fire extinguishing is possible. For this purpose, for example, a constant flow valve previously proposed by the applicant of the present application (see Patent Document 2) can be suitably used.
Note that the fire extinguishing agent storage container 2 and the nozzle portion 3 do not necessarily have to be connected by rigid joining. For example, the nozzle portion 3 may be connected to the fire extinguishing agent storage container 2 via a flexible tube. it can.

  Here, the fire extinguisher 1 uses a nitrogen gas as a fire extinguishing agent, and in order to provide a portable fire extinguisher suitable for initial fire extinguishing, the nozzle unit 3 for radiating the fire extinguishing agent is shown in FIG. The nozzle part 3 which makes it possible to go straight without spreading | extinguishing the extinguishing agent radiated | emitted toward the fire extinguishing object to show and to concentrate and radiate | extinguish an extinguishing agent at the extinguishing object is used.

  The nozzle unit 3 includes a nozzle body 30 connected to the pipe on the fire extinguishing agent storage container 2 side, and a plurality of nozzle units 3 (in this embodiment, 6 in this embodiment) detachably disposed on the stepped portion 30a formed in the internal space of the nozzle body 30. ) Orifice plate 32 having a plurality of orifices 32a, a block-shaped metal porous member 31 through which gas can be circulated disposed at the outlet of the orifice 32a, and the metal porous member 31 on the side opened to the atmosphere. The ring member 30b is in contact with the peripheral edge of the end face and supports the metal porous member 31 to the nozzle body 30.

The orifice plate 32 in which the plurality of orifices 32a are formed is detachably attached to the stepped portion 30a formed in the internal space of the nozzle body 30 through, for example, screws formed on the peripheral surfaces of the stepped portion 30a and the orifice plate 32. I try to set it up.
Thereby, the orifice plate 32 in which a plurality of types of orifices 32a are formed can be selected according to the use conditions.
It is also possible to omit the orifice plate 32 and directly form the same orifice in the nozzle body 30 (not shown).

The orifice 32 a is preferably formed so that the small diameter portion side of the orifice 32 a faces the metal porous member 31.
Thereby, nitrogen gas is uniformly radiated from the entire surface of the end surface of the metal porous member 31 that is open to the atmosphere by uniformly flowing nitrogen gas from the central portion toward the peripheral portion of the metal porous member 31. Can do.

  The metal porous member 31 can be constituted by a monolithic structure, or by a divided structure composed of an upstream member 31a and a downstream member 31b as shown in the present embodiment.

  The metal porous member 31 is preferably a sintered body made of an inorganic material (metal, metal oxide, metal hydroxide, etc.) having a high shape retention performance or a porous metal body made of a three-dimensional network structure. Can be used.

The pore diameter of the voids of the material constituting the metal porous member 31 is made of a homogeneous material as a whole, and is changed in the direction in which gas flows, more specifically, in the direction in which gas flows. For example, in the present embodiment, it can be made of a material in which the hole diameter of the gap in the downstream member 31b is smaller than the hole diameter of the gap in the upstream member 31a.
Thus, by reducing the pore size of the voids of the material constituting the metal porous member 31 in the direction in which the gas flows, nitrogen gas is uniformly supplied from the entire end surface of the metal porous member 31 that is open to the atmosphere. Can radiate.

The metal porous member 31 has the nozzle body 30 (in this embodiment, an orifice in the opposite side of the metal porous member 31 that is open to the atmosphere) in both the integral structure and the divided structure. The end face of the metal porous member 31 that is open to the atmosphere is connected to the nozzle body 30 via a ring member 30b that abuts on the peripheral edge of the end face. It is intended to be supported.
In this case, the ring member 30b is detachably disposed on the nozzle body 30 via screws formed on the peripheral surfaces of the nozzle body 30 and the ring member 30b.
And the downstream member 31b which comprises the metal porous member 31 is formed larger diameter than the upstream member 31a, and the outer peripheral edge part of this downstream member 31b is used as the edge of the nozzle main body 30, and the edge of the ring member 30b. The metal porous member 31 (downstream member 31b) is secured to be sandwiched between the metal porous member 31 (downstream member 31b) so that it can have a large opening area (opening diameter) open to the atmosphere, and is directed to a fire extinguishing target. The range that can maintain the extinguishing agent concentration necessary for extinguishing the emitted nitrogen gas can be set large.
Here, the size of the opening area (opening diameter) opened to the atmosphere of the metal porous member 31 (downstream member 31b) determines a range in which the extinguishing agent concentration necessary for extinguishing the nitrogen gas can be maintained (opening). Therefore, the opening diameter is set to 50 mm or more, preferably 70 mm or more, and more preferably 100 mm.

  In this fire extinguisher 1, when extinguishing using a fire extinguisher, the extinguishing agent does not pollute the surrounding environment, and the extinguishing agent is not toxic to the human body. While enjoying the characteristics of inert gas (nitrogen gas), the fire extinguisher radiated toward the fire extinguishing object goes straight without diffusing, making it possible to concentrate the fire extinguishing agent on the fire extinguishing target and radiate it. By making it easy to maintain the extinguishing agent concentration, an effective fire extinguishing effect can be obtained, and it is particularly useful as a portable fire extinguisher suitable for initial fire extinguishing.

Next, the specification and operation of a specific example of the fire extinguisher 1 will be described.
Weight of fire extinguishing agent storage container (including nozzle part): about 17 kg
Filling nitrogen gas weight: about 4kg
Nitrogen gas filling pressure: about 30 MPa
Nitrogen gas emission duration: Approx. 15 seconds Distance to fire extinguisher: Within approx. 2 m Range that can maintain the extinguishing agent concentration necessary for extinguishing nitrogen gas: Open to the atmosphere of the metal porous member (downstream member) in the nozzle Several times the opening area to be opened (opening diameter D of the porous metal member (downstream member) of this embodiment: about 100 mm)
Metal porous member: Porous metal body composed of a three-dimensional network structure (“Celmet” (registered trademark) manufactured by Sumitomo Electric Industries, Ltd.)

FIG. 3 shows the results of measuring the relationship between the distance from the nozzle when various nozzles are used and the oxygen concentration on the central axis in the radial direction of the fire extinguishing agent (nitrogen gas) of the nozzle.
Here, the whole area nozzle is a nozzle in which one small hole that radiates a fire extinguishing agent (nitrogen gas) toward the fire extinguishing target is formed at the tip of the nozzle, and the local nozzle is a nozzle frequently used for carbon dioxide. In this nozzle, a plurality of small holes are formed laterally at the tip of the nozzle, the entire tip of the nozzle is covered with a horn, and a fire extinguishing agent (nitrogen gas) is emitted from the opening of the horn toward the fire extinguishing target.
As apparent from FIG. 3, the nozzle of the present embodiment has a distance of 1 to 1.5 m (here, a metal porous member (downstream) It was confirmed that the extinguishing agent concentration (extinguishing concentration) necessary for extinguishing the nitrogen gas in (1) can be maintained by increasing the opening diameter D of the member).

  By the way, in the fire extinguisher 1 of the first embodiment, the nitrogen gas stored at a high pressure in the fire extinguisher storage container 2 is depressurized by the nozzle portion 3 in which the metal porous member 31 and the orifice 32a are disposed. Therefore, by adjusting the pressure (primary pressure) of the nitrogen gas stored in the extinguishing agent storage container 2 and the metal porous member 31 and the orifice 32a disposed in the nozzle portion 3, the present invention shown in FIG. Like the modified example of the first embodiment of the fire extinguisher, the adjuster 43 in the control instrument 4 can be omitted.

FIG. 5 shows a second embodiment of the fire extinguisher of the present invention.
This fire extinguisher 1 has a high pressure applied to the fire extinguisher storage container 2 in the fire extinguisher 1 of the first embodiment. The pressure reducing function that makes the stored nitrogen gas pressure (primary pressure) easy to use (secondary pressure), the pressure regulating function that keeps the secondary pressure constant, and the extinguishing agent regardless of the pressure change of the extinguishing agent A regulator 43 having a flow rate adjustment function for maintaining a constant flow rate and performing stable fire extinguishing is incorporated in the container valve 41.
This container valve 41 has a pressure reducing function that makes the pressure (primary pressure) of nitrogen gas stored in the extinguishing agent storage container 2 at a high pressure easy to use (secondary pressure) and a constant secondary pressure. It is preferable to have a flow rate adjustment function that keeps the flow rate of the extinguishing agent substantially constant regardless of the pressure function or the pressure change of the extinguishing agent so that stable extinguishing can be performed. Can be suitably used the previously proposed decompression-type container valve for gas fire extinguishing equipment (see Patent Document 3).
Thereby, since the adjuster 43 of the fire extinguisher 1 is not exposed to the outside, there is no protrusion of the fire extinguisher 1, and operability and safety can be improved.

  In this case, the regulator 43 is configured to function in conjunction with an opening device 42 that is also incorporated in the container valve 41.

FIG. 6 shows a third embodiment of the fire extinguisher of the present invention.
This fire extinguisher 1 has a high pressure applied to the fire extinguisher storage container 2 in the fire extinguisher 1 of the first embodiment. The pressure reducing function that makes the stored nitrogen gas pressure (primary pressure) easy to use (secondary pressure), the pressure regulating function that keeps the secondary pressure constant, and the extinguishing agent regardless of the pressure change of the extinguishing agent An adjuster 43 having a flow rate adjusting function for maintaining a constant flow rate and performing stable fire extinguishing is stored and installed in the fire extinguisher storage container 2.
As a result, since the adjuster 43 of the fire extinguisher 1 is not exposed to the outside, the protrusion of the fire extinguisher 1 is eliminated, and the operability and safety can be improved, and the position of the center of gravity of the fire extinguisher 1 is lowered and installed upright. Stability can be increased.

In this case, the adjuster 43 is incorporated in the container valve 41 and stored in the fire extinguishing agent storage container 2, and is configured to function in conjunction with the opening device 42 also incorporated in the container valve 41.
The container valve 41 incorporates a safety device 44 having a sealing plate 44a for releasing nitrogen gas when the pressure of nitrogen gas stored in the extinguishing agent storage container 2 abnormally increases.

The opening device 42 incorporated in the container valve 41 includes a sealing plate 42b attached via a seal member 42c by a cap nut 42a screwed to the container valve 41, and an opening / closing valve 42d. The spring member 42e supported at the rear end by the nut 42a is urged in a direction to close the gas flow path following the front end opening 41a of the container valve 41.
And the pressure of the nitrogen gas stored in the fire extinguisher storage container 2 in the valve chamber 42f is applied to the open / close valve 42d on the back surface.
Thereby, when the fire extinguisher 1 is put in the storage state, the gas flow path following the tip opening 41a of the container valve 41 is closed by the on-off valve 42d, and the nitrogen gas stored in the fire extinguisher storage container 2 at high pressure is closed. The storage state can be maintained.
On the other hand, when the fire extinguisher 1 is used, the pressure in the valve chamber 42f is reduced by breaking the sealing plate 42b, thereby causing the balance of the pressure of the nitrogen gas applied to the on-off valve 42d to be lost, and the spring member 42e. The on-off valve 42d moves against the urging force, the gas flow path following the tip opening 41a of the container valve 41 is opened, and nitrogen gas is released.

The regulator 43 is formed along the moving direction of the valve body 43b of the valve body support 43c fixedly disposed on the container valve 41 by disposing the valve body 43b in the nitrogen gas flow path 43a. It consists of a constant flow valve adapted to change the cross-sectional area of the flow path opening 43d.
Here, the pressure receiving area of the surface facing the upstream side and the pressure receiving area of the surface facing the downstream side of the valve body 43b to which the static pressure of the nitrogen gas before decompression, which is depressurized by the change in the cross-sectional area of the flow path opening 43d, is obtained. (For this reason, the gas pressure chamber 43e formed in the valve body 43b and the nitrogen gas flow path 43a are communicated with each other through a passage 43f formed in the valve body 43b). By eliminating the surface facing the upstream side and the surface facing the downstream side of the valve body 43b to which the static pressure of the nitrogen gas after depressurization is applied, the force due to the static pressure of the nitrogen gas applied in the moving direction of the valve body 43b is balanced. The valve body of the valve body support body 43c is configured by balancing the force applied to the valve body 43b by the flow of nitrogen gas with the biasing force of the spring member 43g that biases the valve body 43b in a direction that balances this force. 43b The cross-sectional area of the formed along the moving direction flow openings 43d is changed, the flow rate of nitrogen gas regardless pressure change of the nitrogen gas is to be kept constant.

According to the regulator 43 composed of this constant flow valve, the valve body 43b disposed in the nitrogen gas flow path 43a is operated by the force applied to the valve body 43b by the flow of nitrogen gas and the urging force of the spring member 43g. By balancing, the cross-sectional area of the flow path opening 43d formed along the moving direction of the valve body 43b is changed, and the flow rate of the nitrogen gas is kept substantially constant regardless of the pressure change of the nitrogen gas. Can do.
Thereby, it is hard to be influenced by the pressure change of nitrogen gas, and can be applied to a large flow rate.
The spring member 43g is used as an urging means for urging the valve body 43b in a direction that balances the force applied to the valve body 43b (a magnet can also be used as the urging means), whereby the overall structure is obtained. The controller 43 can be configured simply and can be stored and installed in the extinguishing agent storage container 2.
Furthermore, since this regulator 43 functions in conjunction with the opening device 42 incorporated in the container valve 41, the mechanism of the control instrument 4 that controls the release of the extinguishing agent including the regulator 43 and the opening device 41 and the operation thereof. Simplification and increased reliability can be achieved.

In FIG. 7, the modification of 3rd Example of the fire extinguisher of this invention is shown.
This fire extinguisher 1 is obtained by changing the opening device 42 incorporated in the container valve 41 in the fire extinguisher 1 of the third embodiment. The container valve 41 has a handle 42g and the handle 42g of the spring member 42e. An operating valve 42h that is operated against the urging force, an operating rod 42j provided integrally with the operating valve 42h, and an on-off valve 42d are provided. The on-off valve 42d is opened at the tip of the container valve 41 by a spring member 42e. The gas flow path following 41a is biased in the closing direction.
The operation rod 42j and the opening / closing valve 42d are formed with passages 42k and 42m so that the pressure on the side of the opening 41a of the container valve 41 is applied to the valve chamber 42f.
Thereby, when the fire extinguisher 1 is put in the storage state, the gas flow path following the tip opening 41a of the container valve 41 is closed by the on-off valve 42d, and the nitrogen gas stored in the fire extinguisher storage container 2 at high pressure is closed. The storage state can be maintained.
On the other hand, when the fire extinguisher 1 is used, by operating the handle 42g, the open / close valve 42d is moved via the operation valve 42h and the operation rod 42j, thereby continuing to the tip opening 41a of the container valve 41. The gas flow path is opened and nitrogen gas is released. Here, even if the operation of the handle 42g is released, the moving state of the on-off valve 42d is maintained by the balance of the pressure of the nitrogen gas applied to the on-off valve 42d.

  The other configurations and operations including the adjuster 43 of this embodiment are the same as those of the fire extinguisher 1 of the third embodiment.

In FIG. 8, the modification of 3rd Example of the fire extinguisher of this invention is shown.
The fire extinguisher 1 includes a protector 51 that protects a portion of the fire extinguisher 1 exposed to the outside from the fire extinguisher storage container 2, a fixing band 52 as a holding member, a shoulder member 53, and a radiation direction indicator 54. Is provided.
Thereby, the operativity and safety | security of the fire extinguisher 1 can be improved further.

FIG. 9 shows a fourth embodiment of the fire extinguisher of the present invention.
This fire extinguisher 1 has a nozzle portion 3 connected to a fire extinguisher storage container 2 as a fire extinguisher supply means via a flexible hose 6, and the fire extinguisher storage container 2 is fixedly arranged. Thus, similarly to the fire extinguisher 1 of the first embodiment, nitrogen gas is stored in the fire extinguisher storage container 2, and the metal porous member 31 is disposed at the outlet portion of the flow path of the fire extinguisher formed in the nozzle portion 3. Is arranged.
In here, the hose 6, as well as to use pull is wound the required length to the hose reel 61, is disposed an opening closing operation valve 34 to the holding portion 33 of the nozzle portion 3, nitrogen gas at hand Be able to operate release and stop.
Thereby, a semi-fixed fire extinguisher suitable for initial fire extinguishing with a large capacity can be provided.

Next, the specification of the specific example of this fire extinguisher 1 is demonstrated.
Weight of nozzle part (including nozzle holding part and hose): Approximately 15 kg
Nitrogen gas filling pressure: about 30 MPa
Nitrogen gas emission duration: Approximately 30 seconds (per extinguishing agent storage container)
Distance to fire extinguishing target: within 2m

10 to 11 show a fifth embodiment of the fire extinguisher of the present invention.
In this fire extinguisher 1, the nozzle portion 3 </ b> A is configured as an assembly of nozzle portions 3 using a plurality of nozzle portions 3 of the fire extinguisher 1 of the first embodiment.
Thereby, the range which can maintain the extinguishing agent density | concentration required for extinction of the extinguishing agent radiated | emitted toward the fire extinguishing object can be set large.
In this case, since the weight of the nozzle portion 3A increases, any power assist mechanism for reducing the load during operation can be employed.

Moreover, like the modification of 5th Example of the fire extinguisher of this invention shown in FIG. 12, in the exit part of the fire extinguisher of the nozzle part 3A comprised as a group of the nozzle parts 3 using a plurality of nozzle parts 3 The metal porous member 35 can be disposed so as to cover the outlet portions of all the nozzle portions 3.
Thereby, the nitrogen gas emitted from each nozzle part 3 can be made uniform by the metal porous member 35 and radiated toward the fire extinguishing target.
In this embodiment, the space 36 is formed between the nozzle portion 3 and the metal porous member 35. However, the nozzle portion 3 and the metal porous member 35 are not provided with the space 36. It can also be arranged to contact.

By the way, the fire extinguisher of the present invention is intended to provide a portable or semi-fixed fire extinguisher suitable for initial fire extinguishing in a relatively narrow range, but the nozzle part of the fire extinguisher 1 of the present invention. 3 is suitable for a specific fire extinguishing target W as shown in FIG. 11 (first reference example) and FIG. 12 (second reference example) or for initial fire extinguishing with a relatively narrow range being the target of extinguishing. It is also possible to provide fixed local fire extinguishing equipment.
Here, as the opening device 42, a device that uses a starting constant-pressure gas source 42n (see Patent Document 4) can be suitably used.

  As mentioned above, although the fire extinguisher of this invention was demonstrated based on the some Example, this invention is not limited to the structure described in the said Example, As (1)-(3) below The configuration can be changed as appropriate without departing from the spirit of the invention, for example, by appropriately adopting known techniques or by appropriately combining the configurations described in the embodiments.

(1) As a fire extinguisher, in addition to typical nitrogen gas as an inert gas, various inert gases in which a plurality of inert gases including nitrogen and other inert gases such as argon are mixed may be used. it can. In addition, the extinguishing agent can be a gas or liquid (in comparison with the gas, the storage ratio of the extinguishing agent relative to the container volume can be increased. In this case, the extinguishing agent storage container should be a container suitable for storing liquefied gas. Can be stored in a fire extinguisher storage container. In addition to inert gas, as a fire extinguisher, a halon substitute fire extinguisher (for example, HFC-227ea) that is not restricted by halon can be used.
(2) As a fire extinguisher storage container, in addition to commonly used steel seamless containers and aluminum containers made of chromium molybdenum, manganese, stainless steel, etc., titanium containers that combine lightness and strength, aluminum, plastic, and stainless steel It is possible to use a composite container or the like in which a liner material, which is a main body portion of a high-pressure gas container made of, or the like is reinforced with FRP made of glass fiber plastic, carbon fiber plastic, or the like.
(3) As a fire extinguisher supply means, in addition to a fire extinguisher storage container, a nitrogen generator disclosed in JP-A-10-263109 and JP-A-2007-222534, and JP-A-2001-346898 are disclosed. A gas generator using a gas generating agent can be used.

  The fire extinguisher of the present invention is an effective extinguishing effect by using as an extinguishing agent an inert gas that has no restrictions on the extinguishing target and usage due to the toxicity of the extinguishing agent on the human body, and making it easy to maintain the extinguishing agent concentration necessary for extinguishing the fire. Provides a portable or semi-fixed type fire extinguisher suitable for initial fire extinguishment, so that it can be used for equipment equipped with electrical and electronic equipment such as computers, communication equipment, data centers, and electrical equipment. It can be used for initial fire extinguishing for various facilities including fire extinguishing.

1 Fire extinguisher 2 Fire extinguisher storage container (extinguishing agent supply means)
3 Nozzle part 3A Nozzle part (collection of nozzle parts)
DESCRIPTION OF SYMBOLS 30 Nozzle main body 31 Metal porous member 32 Orifice plate 32a Orifice 33 Holding part 34 Opening / closing operation valve 35 Metal porous member 4 Control instrument 41 Container valve 42 Opening device 43 Regulator 43a Flow path 43b Valve body 43c Valve body support body 43d Flow path opening 43e Gas pressure chamber 43f Passage 43g Spring member 44 Safety device 51 Protector 52 Fixed band 53 Shoulder 54 Radiation direction indicator 6 Hose 61 Hose reel

Claims (7)

  In a fire extinguisher in which at least a nozzle part for radiating a fire extinguishing agent is portable by a person so that the fire extinguishing agent can be radiated toward a fire extinguishing target, a gas-based fire extinguishing agent is used as the fire extinguishing agent. The fire extinguisher is characterized in that a metal porous member is disposed at the outlet of the flow path of the fire extinguisher formed in the nozzle portion.   The fire extinguisher supply means comprises a fire extinguisher storage container, a nozzle portion is connected to the fire extinguisher storage container by a rigid joint, and the fire extinguisher storage container is configured to be portable by a person. The listed fire extinguisher.   The fire extinguisher supply means is composed of a fire extinguisher storage container, the nozzle portion is connected to the fire extinguisher storage container via a flexible hose, and the fire extinguisher storage container is fixedly arranged. Item 1. A fire extinguisher according to item 1. The extinguishing agent storage container of the fire extinguishing agent supply means, according to claim 1, 2 or 3, wherein the fire extinguisher, characterized by comprising an adjusting device comprising a constant flow valve having a pressure reducing function and flow rate control function .   The fire extinguisher according to claim 1, 2, 3, or 4, wherein an opening diameter of the nozzle portion is set to 50 mm or more.   The fire extinguisher according to claim 1, 2, 3, 4 or 5, wherein the nozzle part is constituted by an assembly of a plurality of nozzle parts.   The fire extinguisher according to claim 1, 2, 3, 4, 5 or 6, wherein a gas fire extinguisher containing an inert gas as a main component is used as the fire extinguisher.

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