WO2011049002A1 - ガス消火設備 - Google Patents
ガス消火設備 Download PDFInfo
- Publication number
- WO2011049002A1 WO2011049002A1 PCT/JP2010/068087 JP2010068087W WO2011049002A1 WO 2011049002 A1 WO2011049002 A1 WO 2011049002A1 JP 2010068087 W JP2010068087 W JP 2010068087W WO 2011049002 A1 WO2011049002 A1 WO 2011049002A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- peripheral wall
- fire extinguishing
- wall
- gas
- end wall
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims description 238
- 230000003584 silencer Effects 0.000 claims description 142
- 239000011358 absorbing material Substances 0.000 claims description 115
- 238000002347 injection Methods 0.000 claims description 72
- 239000007924 injection Substances 0.000 claims description 72
- 230000004888 barrier function Effects 0.000 claims description 42
- 239000002184 metal Substances 0.000 claims description 19
- 230000030279 gene silencing Effects 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 13
- 238000009423 ventilation Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 213
- 239000000463 material Substances 0.000 description 6
- 238000004080 punching Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- 230000002238 attenuated effect Effects 0.000 description 4
- 230000006837 decompression Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000004820 halides Chemical class 0.000 description 3
- 230000001743 silencing effect Effects 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
- A62C35/68—Details, e.g. of pipes or valve systems
Definitions
- the present invention relates to a gas fire extinguishing system in which a fire extinguishing gas such as N 2 gas or a halide gas is released as a fire extinguishing agent into a fire extinguishing target section of a building when a fire occurs, thereby reducing the O 2 concentration in the fire extinguishing target section. More particularly, the present invention relates to a gas fire extinguishing facility that can be suitably implemented to reduce the loud sound generated when fire extinguishing gas is ejected from an ejection head provided in a fire extinguishing target section.
- a fire extinguishing gas such as N 2 gas or a halide gas
- a gas fire extinguisher that extinguishes fire by discharging a fire extinguishing gas such as CO 2 gas, N 2 gas, and a halide into the fire extinguishing target section and reducing the O 2 concentration in the fire extinguishing target section.
- a fire extinguishing gas such as CO 2 gas, N 2 gas, and a halide
- FIG. 16 is a perspective view showing the fire-extinguishing gas injection unit 1 used in the conventional gas fire-extinguishing equipment.
- the fire extinguishing gas injection unit 1 includes an injection head 3 that injects a high-pressure fire extinguishing gas supplied from a fire extinguishing gas supply source 2 when a fire occurs, and a conduit 4 to which the injection head 3 is connected.
- the conduit 4 is connected to the main pipe 5 connected to the fire extinguishing gas supply source 2, the branch pipe 6 interposed in the main pipe 5, and the fire extinguishing gas from the main pipe 5 is guided by the branch pipe 6, and the jet head 3 is connected.
- a branch pipe 7 The main pipe 5 is fastened to a base of the building or a base 8 and a bracket 9 fixed to the case by a fastener 10 such as a U bolt, and is installed in a state where vibration and displacement of the jet head 3 are suppressed ( For example, see Patent Document 1).
- An object of the present invention is to provide a gas fire extinguishing equipment capable of attenuating sound caused by a jet flow of fire extinguishing gas from a jet head.
- the present invention includes an ejection head having a nozzle portion that ejects high-pressure fire extinguishing gas toward a space; A conduit to which the injection head is connected and leads high-pressure fire extinguishing gas to the injection head; A fire-extinguishing gas supply source for supplying high-pressure fire-extinguishing gas to the conduit; A gas fire extinguishing equipment including a silencer that is provided in an ejection head and attenuates sound caused by discharge of a fire extinguishing gas from a nozzle portion.
- the high-pressure fire extinguishing gas supplied to the conduit from the fire extinguishing gas supply source is jetted toward the space in the building via the jet head.
- a jet head is provided with a silencer and can prevent generation of a large jet sound due to the jet flow of fire extinguishing gas jetted at high speed from the nozzle portion of the jet head.
- the silencer of the present invention can be attached to and detached from the ejection head at the cylindrical peripheral wall, at one end in the axial direction of the peripheral wall, at the end wall formed perpendicular to the axial line of the peripheral wall, and at the other axial end of the peripheral wall.
- Including a mounting portion formed on A plurality of ventilation holes are formed in the peripheral wall so as to penetrate in the thickness direction of the peripheral wall.
- the silencer has a peripheral wall, an end wall, and an attachment portion, and is detachably attached to the ejection head by the attachment portion.
- the silencer of the present invention is attachable to and detachable from the ejection head at the cylindrical peripheral wall, at one end in the axial direction of the peripheral wall, at the end wall formed perpendicular to the axis of the peripheral wall, and at the other axial end of the peripheral wall Including a mounting portion formed on The end wall is formed with a plurality of ventilation holes penetrating in the thickness direction of the end wall.
- the silencer includes a peripheral wall, an end wall, and an attachment portion, and is detachably attached to the ejection head by the attachment portion.
- the fire-extinguishing gas ejected at a high speed from the nozzle portion of the ejection head collides with the end wall through the space in the peripheral wall, and is then discharged to the outside through a plurality of through holes formed in the end plate.
- Such a configuration of the silencer also prevents a large injection sound from being generated when the fire extinguishing gas is injected.
- the present invention is characterized in that a sound absorbing material is accommodated in the internal space defined by the peripheral wall, the end wall, and the mounting portion.
- the sound absorbing material since the sound absorbing material is accommodated in the internal space defined by the peripheral wall, the end wall and the mounting portion of the silencer, the sound absorbing material absorbs the vibration of the jet flow of the fire extinguishing gas. Further generation of the injection sound is prevented.
- the ejection head is integrated with the cylindrical peripheral wall, the end wall in the axial direction of the peripheral wall, the end wall formed perpendicular to the axis of the peripheral wall, and the other end in the axial direction of the peripheral wall.
- an inner cylinder provided at a portion facing the downstream side in the fire extinguishing gas ejection direction in the nozzle portion of the ejection head, A gas discharge hole penetrating in the thickness direction is formed in the end wall,
- the inner cylinder has a cylindrical portion in which a plurality of through holes are formed, and an end plate formed perpendicular to the axis of the cylindrical portion at one end in the axial direction of the cylindrical portion.
- the fire-extinguishing gas ejected at a high speed from the nozzle portion of the ejection head collides with the cylindrical end plate of the inner cylindrical body within the inner cylindrical body, and a plurality of transparent gases formed in the cylindrical portion. After being discharged from the hole, the gas is further discharged to the outside from a gas discharge hole formed in the end wall through a space between the cylindrical body and the peripheral wall. As a result, the generation of the injection sound when the fire extinguishing gas is released is prevented.
- the present invention provides an ejection head having a nozzle portion that ejects high-pressure fire extinguishing gas toward a space; A conduit to which the injection head is connected and leads high-pressure fire extinguishing gas to the injection head; A fire extinguishing gas supply source for supplying high pressure extinguishing gas to the conduit, In the gas fire extinguishing equipment, a nozzle hole having an inner peripheral surface smoothly connected to the inner peripheral surface of the conduit is formed in the nozzle portion of the ejection head.
- the high-pressure fire extinguishing gas supplied to the conduit from the fire extinguishing gas supply source is jetted toward a space such as a building via the jet head. Since such an injection head is formed with a nozzle hole having an inner peripheral surface that is smoothly connected to the inner peripheral surface of the conduit, it is large due to the injection flow of the fire extinguishing gas that is injected at high speed from the nozzle portion of the injection head. It is possible to prevent the injection sound from being generated.
- the present invention provides an ejection head having a nozzle portion that ejects high-pressure fire extinguishing gas toward a space; A conduit to which the injection head is connected and leads high-pressure fire extinguishing gas to the injection head; A fire-extinguishing gas supply source for supplying high-pressure fire-extinguishing gas to the conduit; A gas fire extinguishing equipment comprising a silencer provided between an ejection head and a conduit and attenuating sound caused by discharge of a fire extinguishing gas from a nozzle portion.
- the high-pressure fire extinguishing gas supplied to the conduit from the fire extinguishing gas supply source is jetted toward the space in the building via the jet head.
- a silencer is provided between the ejection head and the conduit, and it is possible to prevent the occurrence of a large ejection noise due to the fire-extinguishing gas ejection flow ejected from the nozzle portion of the ejection head at high speed.
- the silencer of the present invention includes a cylindrical peripheral wall, a first attachment portion that is detachably attached to the conduit at one end in the axial direction of the peripheral wall, and an attachment / detachment to the ejection head at the other axial end of the peripheral wall.
- a second mounting portion that can be formed; a first end wall formed perpendicular to the axis of the peripheral wall at the one end; and a second end formed perpendicular to the axis of the peripheral wall at the other end.
- At least one through-hole is formed in the central portion of the first end wall around the axis of the peripheral wall so as to penetrate in the thickness direction of the first end wall;
- the second end wall is formed with a plurality of through holes penetrating in the thickness direction of the second end wall.
- the silencer has a peripheral wall, first and second end walls, and first and second attachment portions, and is attached and detached between the ejection head and the conduit by the first and second attachment portions. Mounted as possible.
- the fire extinguishing gas supplied from the conduit and injected at high speed from the through hole formed in the first end wall collides with the second end wall in the silencer, and then strikes the second end wall. After being discharged into the space defined by the second end wall and the ejection head from the plurality of through holes formed, it is emitted from the ejection head to the outside.
- the silencer expands the fire-extinguishing gas injected at high speed from the through hole formed in the first end wall in the space in the silencer, thereby increasing the flow velocity in the through hole formed in the second end wall. Therefore, the generation of sound due to the discharge of the fire extinguishing gas from the ejection head is suppressed.
- the silencer of the present invention includes a cylindrical peripheral wall, a first attachment portion that is detachably attached to the conduit at one end portion in the axial direction of the peripheral wall, and a detachable attachment to the ejection head at the other axial end portion of the peripheral wall.
- a second mounting portion that can be formed; a first end wall formed perpendicular to the axis of the peripheral wall at the one end; and a second end formed perpendicular to the axis of the peripheral wall at the other end.
- the first end wall has a guide portion having a plurality of nozzle holes for injecting high-pressure fire extinguishing gas supplied from a conduit into an internal space defined by the peripheral wall, the first end wall, and the second end wall.
- the plurality of nozzle holes are formed on the axis perpendicular to the axis of the peripheral wall at equal intervals in the circumferential direction with respect to the axis of the peripheral wall;
- the second end wall is formed with a plurality of through holes penetrating in the thickness direction of the second end wall.
- the silencer has a peripheral wall, first and second end walls, and first and second attachment portions, and is attached and detached between the ejection head and the conduit by the first and second attachment portions. Mounted as possible.
- the fire extinguishing gas supplied from the conduit and injected at high speed from the nozzle hole of the guide portion formed in the first end wall collides with the inner peripheral surface of the peripheral wall in the silencer, and then enters the second end wall. After being discharged into the space defined by the second end wall and the ejection head from the plurality of through holes formed, it is emitted from the ejection head to the outside.
- the silencer is a through hole formed in the second end wall by expanding the fire extinguishing gas injected at high speed from the nozzle hole of the guide portion formed in the first end wall in the space in the silencer. Therefore, the generation of sound due to the discharge of the fire extinguishing gas from the ejection head is suppressed.
- the silencer of the present invention includes a cylindrical peripheral wall, a first end wall formed perpendicular to the axial line of the peripheral wall at one end in the axial direction of the peripheral wall, and a mounting part formed detachably on the ejection head.
- a second end wall formed perpendicular to the axis of the peripheral wall at the other axial end of the peripheral wall, and perpendicular to the axis of the peripheral wall between the first end wall and the second end wall
- a cylindrical conductive pipe that guides the fire extinguishing gas ejected from the ejection head to the first silencing chamber, which is an internal space defined by the peripheral wall, the first end wall, and the barrier
- a cylindrical vent pipe that guides the extinguishing gas in the second silencing chamber, which is an internal space defined by the second end wall and the barrier
- the barrier is formed with a plurality of through holes penetrating in the thickness direction of the barrier
- the conducting pipe is formed with a connecting portion detachably connected to the ejection head at one axial end of the conducting pipe, and an end plate is formed at the other axial end of the conducting pipe.
- a plurality of through holes are formed in a portion protruding into the silencer chamber 1 so as to penetrate in the thickness direction of the peripheral
- the silencer includes a peripheral wall, a first barrier, a second end wall having a mounting portion, and a barrier, and is detachably attached to the ejection head by the mounting portion.
- the fire extinguishing gas ejected at a high speed from the plurality of through holes formed in the conducting pipe connected to the ejection head by the connecting portion into the first silencing chamber is transmitted from the plurality of through holes formed in the barrier to the second silencing chamber.
- the fire extinguishing gas released to the second silencing chamber is released to the outside of the silencer through the vent pipe.
- the silencer expands the fire extinguishing gas injected at high speed from a plurality of through holes formed in the conducting pipe in the space in the first silencer chamber and the space in the second silencer chamber, thereby increasing the flow velocity in the ventilation pipe. Therefore, the generation of sound due to the discharge of the fire-extinguishing gas from the vent pipe is suppressed.
- the silencer of the present invention includes a cylindrical peripheral wall, a first end wall formed perpendicular to the axial line of the peripheral wall at one end in the axial direction of the peripheral wall, and a mounting part formed detachably on the ejection head.
- a second end wall formed perpendicular to the axis of the peripheral wall at the other axial end of the peripheral wall, and perpendicular to the axis of the peripheral wall between the first end wall and the second end wall
- a cylindrical conductive pipe that guides the fire extinguishing gas ejected from the ejection head to the first silencing chamber, which is an internal space defined by the peripheral wall, the first end wall, and the barrier;
- a plurality of tubular vent pipes that guide the extinguishing gas in the second silencing chamber, which is an internal space defined by the second end wall and the barrier, to the outside,
- the barrier is formed with a plurality of through holes penetrating in the thickness direction of the barrier,
- the conducting pipe is formed with a connecting portion detachably connected to the ejection head at one axial end of the conducting pipe, and an end plate is formed at the other axial end of the conducting pipe.
- a plurality of through holes are formed in a portion protruding into the silencer chamber 1 so as to penetrate in the thickness direction of the peripheral wall of the conducting tube,
- the plurality of vent pipes are arranged on the axis perpendicular to the axis of the peripheral wall, spaced at equal angles in the circumferential direction with respect to the axis of the peripheral wall, and formed through the peripheral wall.
- the silencer includes a peripheral wall, a first barrier, a second end wall having a mounting portion, and a barrier, and is detachably attached to the ejection head by the mounting portion.
- the fire extinguishing gas ejected at a high speed from the plurality of through holes formed in the conducting pipe connected to the ejection head by the connecting portion into the first silencing chamber is transmitted from the plurality of through holes formed in the barrier to the second silencing chamber.
- the fire extinguishing gas released to the second silencing chamber is released to the outside of the silencer through the vent pipe.
- the silencer expands the fire extinguishing gas injected at high speed from a plurality of through holes formed in the conducting pipe in the space in the first silencer chamber and the space in the second silencer chamber, thereby increasing the flow velocity in the ventilation pipe. Therefore, the generation of sound due to the discharge of the fire-extinguishing gas from the vent pipe is suppressed.
- the silencer of the present invention is formed such that the silencer is detachably attached to a cylindrical peripheral wall, one end portion in the axial direction of the peripheral wall, an end wall formed perpendicular to the axis of the peripheral wall, and the ejection head. It includes an attachment portion and a sound absorbing material made of porous metal and housed in an internal space defined by the peripheral wall, the end wall, and the ejection head.
- the sound absorbing material is made of a porous metal and is accommodated in the internal space.
- the fire extinguishing gas supplied from the branch pipe side can be gradually decompressed and expanded, and the flow rate can be lowered. Thereby, generation
- the sound absorbing material includes a first sound absorbing material provided at one end portion in the axial direction of a peripheral wall and a second sound absorbing material provided at the other end portion in the axial direction.
- the sound absorbing material includes the first sound absorbing material provided at one end portion in the axial direction of the peripheral wall and the second sound absorbing material provided at the other end portion in the axial direction.
- the fire extinguishing gas supplied from the side can be gradually decompressed and expanded by the first sound absorbing material to reduce its flow rate, and the fire extinguishing gas can be further decompressed and expanded by the second sound absorbing material immediately before injection to reduce its flow rate. it can. Thereby, generation
- the silencer of the present invention further includes a third sound absorbing material provided between the first sound absorbing material and the second sound absorbing material.
- the third sound absorbing material since the third sound absorbing material is provided between the first sound absorbing material and the second sound absorbing material, the third sound absorbing material absorbs the acoustic vibration caused by the jet flow of the fire extinguishing gas, Generation of the injection sound resulting from the injection of the fire extinguishing gas can be suppressed.
- the silencer is provided in the ejection head, it is possible to prevent a large ejection sound from being generated even if fire extinguishing gas is ejected from the nozzle portion of the ejection head when a fire occurs.
- the nozzle head having the inner peripheral surface smoothly connected to the inner peripheral surface of the conduit is formed in the injection head, a large amount of fire extinguishing gas is injected from the nozzle portion of the injection nozzle when a fire occurs. It is possible to prevent the generation of the injection sound.
- the silencer is provided between the ejection head and the conduit, it is possible to prevent a large ejection noise from being generated even if fire extinguishing gas is ejected from the nozzle portion of the ejection nozzle in the event of a fire. it can.
- FIG. 1 It is a perspective view which shows the fire extinguishing gas injection part 11 with which the gas fire extinguishing equipment of one Embodiment of this invention is equipped.
- 3 is an enlarged cross-sectional view of the silencer 17.
- FIG. It is an expanded sectional view which shows the silencer 17a with which the gas fire extinguishing equipment of other embodiment of this invention is equipped.
- silencer 17b With which gas fire extinguishing equipment of still another embodiment of the present invention is equipped.
- silencer 17c silencer 17c with which a gas fire extinguishing equipment of further another embodiment of the present invention is equipped.
- FIG. 1 It is sectional drawing which shows the injection head 50 of the gas fire extinguishing equipment of further another embodiment of this invention. It is sectional drawing for demonstrating the effect by the ejection head 50 shown in FIG. It is an expanded sectional view showing silencer 60 with which a gas fire extinguishing equipment of further another embodiment of the present invention is equipped. It is an expanded sectional view showing silencer 60a with which gas fire extinguishing equipment of still another embodiment of the present invention is equipped. It is an expanded sectional view showing silencer 17d with which a gas fire extinguishing equipment of further another embodiment of the present invention is equipped. It is a graph for demonstrating the silencing effect by the silencing apparatus 17d.
- silencer 17e With which gas fire extinguishing equipment of still another embodiment of the present invention is equipped. It is an expanded sectional view showing silencer 17f with which a gas fire extinguishing equipment of further another embodiment of the present invention is equipped. It is an expanded sectional view showing silencer 17g with which gas fire extinguishing equipment of still another embodiment of the present invention is equipped. It is an expanded sectional view showing silencer 17h with which the gas fire extinguishing equipment of further another embodiment of the present invention is equipped. It is a perspective view which shows the fire extinguishing gas injection part 1 used with the gas fire extinguishing equipment of a prior art.
- FIG. 1 is a perspective view showing a fire extinguishing gas injection unit 11 provided in a gas fire extinguishing facility according to an embodiment of the present invention.
- the gas fire extinguishing equipment of the present embodiment is provided in a fire extinguishing target section of a building, and includes a jet head 13 having a nozzle portion 12 that jets high-pressure fire extinguishing gas toward a space in the fire extinguishing target section, and a jet head 13.
- a conduit 14 that is connected to guide the high-pressure fire extinguishing gas to the jet head 13, a fire-extinguishing gas supply source 15 that supplies a high-pressure inert gas to the conduit 14, and a nozzle that is provided in the jet head 13 and formed in the nozzle portion 12.
- a muffler 17 for attenuating sound generated due to the injection sound caused by the injection of the fire extinguishing gas injected from the hole 16.
- the fire extinguishing gas is realized by an inert gas such as N2 gas and CO2 gas or an active gas such as a halide gas, and by releasing such a fire extinguishing gas as a fire extinguishing agent, the O2 concentration in the fire extinguishing target section is reduced. Can be extinguished.
- an inert gas such as N2 gas and CO2 gas or an active gas such as a halide gas
- the fire-extinguishing gas jet section 11 is configured by the jet head 13 and the silencer 17.
- a fire extinguishing gas injection unit 11 is supplied from the fire extinguishing gas supply source 15 to the injection head 13 through the conduit 14.
- the conduit 14 includes a main pipe 23 connected to the fire extinguishing gas supply source 15, a branch pipe 18 interposed in the main pipe 23, and a branch pipe 19 connected to the branch pipe 18.
- a high-pressure fire extinguishing gas from the gas supply source 15 is guided to the ejection head 13.
- the conduit 14 is fastened to the base 20 and the bracket 21 by a fastener 22 such as a U-bolt, and is installed in a building frame in a state where vibration and displacement are suppressed.
- FIG. 2 is an enlarged cross-sectional view of the silencer 17.
- the silencer 17 includes a cylindrical peripheral wall 25, an end wall 26 formed perpendicular to the axial line of the peripheral wall 25 at one axial end of the peripheral wall 25, and an ejection head 13 at the other axial end of the peripheral wall 25.
- a cylindrical sound-absorbing material 33 that is mounted and accommodated in the peripheral wall 25 along the inner peripheral surface thereof.
- Such a sound absorbing material 33 may be configured by laminating a plurality of wire meshes, for example.
- a gas discharge hole 34 is formed in the end wall 26 on the same axis.
- the silencer 17 configured as described above, the acoustic vibration caused by the jet flow of the fire extinguishing gas jetted from the nozzle portion 12 of the jet head 13 at a high speed is absorbed by the sound absorbing material 33, and the gas discharge hole 34. To the outside. Thereby, generation
- FIG. 3 is an enlarged cross-sectional view showing a silencer 17a provided in a gas fire extinguishing facility according to another embodiment of the present invention.
- the silencer 17a of the present embodiment includes a cylindrical peripheral wall 25, an end wall 26 formed perpendicularly to the axial line of the peripheral wall 25 at one axial end of the peripheral wall 25, and an axial end of the peripheral wall 25.
- the mounting portion 27 integrally formed with the ejection head 13 and the inner cylinder 29 provided at the portion 28 facing the downstream side of the fire extinguishing gas ejection direction in the nozzle portion 12 of the ejection head 13 are included.
- the inner cylindrical body 29 has a cylindrical part 31 having a plurality of through holes 30 and an end formed perpendicular to the axis of the cylindrical part 31 at one end in the axial direction of the cylindrical part 31. Plate 32.
- FIG. 4 is an enlarged cross-sectional view showing a silencer 17b provided in a gas fire extinguishing facility according to still another embodiment of the present invention.
- the silencer 17b of the present embodiment has a cylindrical peripheral wall 35, an end wall 36 formed perpendicular to the axial line of the peripheral wall 35 at one end in the axial direction of the peripheral wall 35, and an injection at the other axial end of the peripheral wall 35.
- an attachment portion 37 detachably formed on the head 13.
- a plurality of vent holes 38 are formed in the end wall 36 so as to penetrate in the thickness direction of the end wall 36.
- the sound absorbing material 40 is accommodated in the internal space 39 defined by the peripheral wall 35, the end wall 36 and the mounting portion 37.
- the sound absorbing material 40 may be configured by laminating a plurality of wire meshes.
- the air is discharged to the outside through a plurality of ventilation holes 38 formed in 36.
- Such a silencer configuration also prevents the generation of loud sounds.
- FIG. 5 is an enlarged cross-sectional view showing a silencer 17c provided in a gas fire extinguishing facility according to still another embodiment of the present invention.
- the silencer 17 of the present embodiment includes a cylindrical peripheral wall 41, an end wall 42 formed perpendicularly to the axial line of the peripheral wall 41 at one axial end of the peripheral wall 41, and the other axial end of the peripheral wall 41.
- an attachment portion 43 that is detachably formed on the ejection head 13.
- a plurality of vent holes 44 are formed in the peripheral wall 41 so as to penetrate in the thickness direction of the peripheral wall 41.
- the sound absorbing material 46 is accommodated in the internal space 45 defined by the peripheral wall 41, the end wall 42, and the mounting portion 43.
- the sound absorbing material 46 for example, a plurality of wire meshes may be laminated.
- the fire extinguishing gas ejected from the nozzle portion 12 of the ejection head 13 by the gas fire extinguishing equipment having the silencer 17c configured as described above collides with the end wall 42 and the flow velocity thereof is attenuated, and is formed on the peripheral wall 41.
- a plurality of vent holes 44 are discharged to the outside. This prevents a large sound from being generated in the fire extinguishing gas due to the injection.
- FIG. 6 is a cross-sectional view showing an injection head 50 of a gas fire extinguishing equipment according to still another embodiment of the present invention
- FIG. 7 is a cross-sectional view for explaining the effect of the injection head 50 shown in FIG. Note that parts corresponding to those of the above-described embodiment are denoted by the same reference numerals.
- the gas fire extinguishing equipment of the present embodiment is provided in a building, and the ejection head 50 is connected to the ejection head 50 having the nozzle portion 12 that ejects high-pressure fire extinguishing gas toward the space in the building.
- the jet head 50 configured as described above, the high-pressure fire extinguishing gas supplied from the fire extinguishing gas supply source 15 to the conduit 14 is jetted toward the space in the building through the nozzle hole 16 of the jet head 50. Is done. At this time, since the nozzle hole 16 having the inner peripheral surface 52 smoothly connected to the inner peripheral surface 51 of the branch pipe 19 of the conduit 14 is formed in the ejection head 50, the nozzle head 12 is ejected at a high speed. In the jet flow of the fire extinguishing gas, for example, in the jet head 50a shown in FIG. 7, a loud jet sound caused by the edge portion 55 facing the inlet of the nozzle hole 16 having an inner diameter D2 smaller than the inner diameter D1 of the branch pipe 19 of the conduit 14 Can be prevented.
- FIG. 8 is an enlarged cross-sectional view showing a silencer 60 provided in a gas fire extinguishing facility according to still another embodiment of the present invention. Note that parts corresponding to those of the above-described embodiment are denoted by the same reference numerals.
- the silencer 60 of the present embodiment includes a cylindrical peripheral wall 61, an end portion in the axial direction of the peripheral wall 61, a mounting portion 62 that is detachably formed on the branch pipe 19, and an end portion in the axial direction of the peripheral wall 61.
- At least one through hole 66 is formed in the end wall 64 so as to penetrate in the thickness direction of the end wall 64.
- the at least one through hole 66 is formed in the central portion 68 of the end wall 64 with the axis of the peripheral wall 61 as the center, and restricts the flow rate of the fire extinguishing gas supplied from the branch pipe 19.
- a plurality of through holes 67 are formed in the end wall 65 so as to penetrate in the thickness direction of the end wall 65.
- the plurality of through holes 67 are formed in the remaining peripheral portion 70 except for the central portion 69 of the end wall 65 with the axis of the peripheral wall 61 as the center.
- the end walls 64 and 65 are made of, for example, punching metal.
- the fire extinguishing gas injected at high speed from the through-hole 66 formed in the end wall 64 by such a silencer 60 collides with the central portion 69 of the end wall 65 in the silencer 60, and the flow velocity is attenuated. After being discharged from a plurality of through holes 67 formed in the end wall 65 into a space defined by the end wall 65 and the ejection head 13, it is discharged to the outside from the nozzle holes 16 formed in the nozzle portion 12.
- the silencer 60 expands the fire extinguishing gas injected from the through-hole 66 formed in the end wall 64 at a high speed in the space in the silencer 60, thereby increasing the flow velocity in the through-hole 67 formed in the end wall 65. Therefore, the generation of sound due to the discharge of the fire extinguishing gas from the nozzle hole 16 is suppressed.
- the through hole 67 is not formed in the central portion 69 of the end wall 65, but the through hole 67 may be formed in the central portion 69 of the end wall 65.
- the fire extinguishing gas injected from the through hole 66 at a higher speed than when the through hole 67 is formed in the central portion 69 of the end wall 65 Since the amount of rebounding is large and the flow velocity is lowered, the silencing effect is high.
- FIG. 9 is an enlarged cross-sectional view showing a silencer 60a provided in a gas fire extinguishing facility according to still another embodiment of the present invention. Note that parts corresponding to those of the above-described embodiment are denoted by the same reference numerals.
- the silencer 60a of the present embodiment includes a cylindrical peripheral wall 61, an end portion in the axial direction of the peripheral wall 61, a mounting portion 62 that is detachably formed on the branch pipe 19, and an end portion in the axial direction of the peripheral wall 61.
- End wall 65
- the end wall 64 a has a guide portion 72 having a plurality of nozzle holes 71 for ejecting high-pressure fire extinguishing gas supplied from the branch pipe 19 into the inner space defined by the peripheral wall 61 and the end walls 64 a and 65. It is formed facing the internal space on the axis.
- the plurality of nozzle holes 71 of the guide portion 72 are formed on the axis perpendicular to the axis of the peripheral wall 61 at equal intervals in the circumferential direction with respect to the axis of the peripheral wall 61.
- a plurality of through holes 67 are formed in the end wall 65 so as to penetrate in the thickness direction of the end wall 65.
- the plurality of through holes 67 are formed in the remaining peripheral portion 70 except for the central portion 69 of the end wall 65 with the axis of the peripheral wall 61 as the center.
- the end wall 65 is made of, for example, punching metal.
- the through hole 67 is not formed in the central portion 69 of the end wall 65, but the through hole 67 may be formed in the central portion 69 of the end wall 65.
- FIG. 10 is an enlarged cross-sectional view showing a silencer 17d provided in a gas fire extinguishing facility according to still another embodiment of the present invention.
- the silencer 17d is preferably used by being attached to the ejection head 13 provided on the wall surface of the fire extinguishing target section, for example.
- the silencer 17d of the present embodiment is detachably formed on a cylindrical peripheral wall 81, an end wall 82 formed perpendicular to the axial line of the peripheral wall 81 at one axial end of the peripheral wall 81, and the ejection head 13.
- a cylindrical vent pipe 89 that guides the extinguishing gas in the silencing chamber 88, which is an internal space defined by the peripheral wall 81, the end wall 84, and the barrier 85, to the outside of the silencing device 17d.
- the peripheral wall 81, the end wall 82, and the end wall 84 are made of a sound deadening material, for example.
- a plurality of through holes 851 are formed penetrating in the thickness direction of the barrier 85.
- the barrier 85 is made of, for example, punching metal.
- the conducting pipe 87 is disposed so as to penetrate the barrier 85 and protrude into the muffler chamber 86.
- the conducting pipe 87 is formed with a connecting portion 871 that is detachably connected to the ejection head 13 at one axial end of the conducting pipe 87, and an end plate 872 is formed at the other axial end of the conducting pipe 87.
- a plurality of through holes 874 are formed in a portion 873 of the peripheral wall of the conductive tube 87 protruding into the sound deadening chamber 86 so as to penetrate in the thickness direction of the peripheral wall of the conductive tube 87.
- a portion 873 in which the plurality of through holes 874 are formed in the conducting tube 87 is made of, for example, punching metal.
- the ventilation pipe 89 is disposed through the barrier 85 and the end wall 82, and a metal net 891 is provided at the opening on the side of the sound deadening chamber 88. .
- the material of the vent pipe 89 is, for example, vinyl chlor
- the fire extinguishing gas discharged from the through hole 851 to the sound deadening chamber 88 is discharged to the outside of the sound deadening device 17d through the vent pipe 89. Since the silencer 17d expands the fire extinguishing gas injected at a high speed from the plurality of through holes 874 in the space in the silencer chamber 86 and the space in the silencer chamber 88, the flow rate in the vent pipe 89 is reduced. The generation of sound due to the release of the fire extinguishing gas from 89 is suppressed.
- Table 1 shows calculation examples of pressure and flow velocity for Examples 1 and 2 of the gas fire extinguishing equipment using the silencer 17d.
- the hole diameter of the vent pipe 89 of the silencer 17d is 50 mm
- the hole diameter of the vent pipe 89 of the silencer 17d is 80 mm.
- the pressure is the pressure in the sound deadening chamber 86
- the flow velocity (m / s) is the flow velocity at the fire extinguishing gas injection port 892 of the vent pipe 89.
- the flow rate when injecting 2 atm fire extinguishing gas into 1 atm atmosphere is about 340 m / s, and a large sound is generated.
- the pressure in the muffler chamber 86 By reducing the pressure in the muffler chamber 86, the flow rate at the fire extinguishing gas injection port 892 can be reduced, and the volume can be reduced.
- the pressure in the sound deadening chamber 86 is about 1.5 atm, and the flow rate at the fire extinguishing gas injection port 892 is about 250 (m / s).
- the pressure in the sound deadening chamber 86 is about 1.1 atm, and the flow rate at the fire extinguishing gas injection port 892 is about 100 (m / s).
- FIG. 11 is a graph for explaining the silencing effect by the silencing device 17d.
- the vertical axis is the sound pressure (dB), and the horizontal axis is the distance (m) from the nozzle portion 12.
- a graph 91 is a graph when the silencer is not used, a graph 92 is a graph when the first embodiment is used, and a graph 93 is a graph when the second embodiment is used.
- the sound pressure is about 125 dB. In the first embodiment, the sound pressure is reduced to about 105 dB. The pressure has dropped to about 100 dB. Similarly, when the silencer is not used at the position where the distance from the nozzle portion 12 is 10 (m), the sound pressure is about 115 dB. In the first embodiment, the sound pressure is reduced to about 96 dB. Then, the sound pressure has dropped to about 92 dB. That is, the sound pressure can be lowered by about 20 dB in the first embodiment, and the sound pressure can be lowered by about 25 dB in the second embodiment, compared to the case where the silencer is not used.
- FIG. 12 is an enlarged cross-sectional view showing a silencer 17e provided in a gas fire extinguishing facility according to still another embodiment of the present invention.
- the silencer 17e is preferably used by being attached to the jet head 13 provided on the ceiling of the fire extinguishing target section, for example. Note that parts corresponding to those of the above-described embodiment are denoted by the same reference numerals.
- the silencer 17e of the present embodiment is detachably formed on a cylindrical peripheral wall 81, an end wall 82 formed perpendicular to the axis of the peripheral wall 81 at one end in the axial direction of the peripheral wall 81, and the ejection head 13.
- An end wall 84 formed perpendicular to the axis of the peripheral wall 81 at the other end in the axial direction of the peripheral wall 81, and between the end wall 82 and the end wall 84, the axis of the peripheral wall 81 A vertically formed barrier 85, and a cylindrical conducting pipe 87 that guides a fire extinguishing gas ejected from the ejection head 13 to a sound deadening chamber 86 that is an internal space defined by the peripheral wall 81, the end wall 82, and the barrier 85; A plurality of cylindrical ventilation pipes 89a that guide the extinguishing gas in the silencing chamber 88, which is an internal space defined by the peripheral wall 81, the end wall 84, and the barrier 85, to the outside of the silencing device 17e.
- the peripheral wall 81, the end wall 82, and the end wall 84 are made of a sound deadening material, for example.
- a plurality of through holes 851 are formed penetrating in the thickness direction of the barrier 85.
- the barrier 85 is made of, for example, punching metal.
- the conducting pipe 87 is disposed so as to penetrate the barrier 85 and protrude into the muffler chamber 86.
- the conducting pipe 87 is formed with a connecting portion 871 that is detachably connected to the ejection head 13 at one axial end of the conducting pipe 87, and an end plate 872 is formed at the other axial end of the conducting pipe 87.
- a plurality of through holes 874 are formed in a portion 873 of the peripheral wall of the conductive tube 87 protruding into the sound deadening chamber 86 so as to penetrate in the thickness direction of the peripheral wall of the conductive tube 87.
- a portion 873 in which the plurality of through holes 874 are formed in the conducting tube 87 is made of, for example, punching metal.
- the plurality of vent pipes 89 a are arranged on the axis orthogonal to the axis of the peripheral wall 81 at equal intervals in the circumferential direction with respect to the axis of the peripheral wall 81, and are formed through the peripheral wall 81.
- Each vent pipe 89a is formed with a fire extinguishing gas injection port 892a that is an opening to the outside of the silencer 17e, and the fire extinguishing gas is injected from the respective extinguishing gas injection port 892a to the outside of the silencer 17e.
- the material of the vent pipe 89a is, for example, vinyl chloride.
- the fire extinguishing gas injected into the silencer chamber 86 at a high speed from the plurality of through holes 874 formed in the conduction pipe 87 is transferred from the plurality of through holes 851 formed in the barrier 85 to the silencer chamber 88. Released.
- the fire extinguishing gas discharged from the through hole 851 to the sound deadening chamber 88 is discharged to the outside of the sound deadening device 17e through the vent pipe 89a. Since the silencer 17e expands the fire extinguishing gas injected at a high speed from the plurality of through holes 874 in the space in the silencer chamber 86 and the space in the silencer chamber 88, the flow rate in the vent pipe 89a is lowered. The generation of sound due to the release of the fire extinguishing gas from 89a is suppressed.
- FIG. 13 is an enlarged cross-sectional view showing a silencer 17f provided in a gas fire extinguishing facility according to still another embodiment of the present invention. Note that parts corresponding to those of the above-described embodiment are denoted by the same reference numerals.
- the muffler 17f is preferably used by being attached to the ejection head 13 provided on the wall surface of the fire extinguishing target section, for example.
- the silencer 17f of the present embodiment includes a cylindrical peripheral wall 121, an annular end wall 122 formed perpendicular to the axial line of the peripheral wall 121 at one axial end of the peripheral wall 121, and the other axial end of the peripheral wall 121. And an attachment portion 123 that is detachably formed on the ejection head 13.
- a silencer chamber 124 that is an internal space defined by the ejection head 13, the peripheral wall 121, and the end wall 122 is formed in the silencer 17 f.
- a columnar sound absorbing material 125 is mounted and accommodated along the inner peripheral surface of the peripheral wall 121.
- a casing 129 is configured including the peripheral wall 121, the end wall 122, and the attachment portion 123.
- the inner peripheral surface 121a of the peripheral wall 121 facing the noise reduction chamber 124 of the casing 129 is formed in a cylindrical shape, and the inner surface 122a of the end wall 122 facing the noise reduction chamber 124 is on a virtual plane that is perpendicular to the axis L121 of the peripheral wall 121. It is formed.
- the end wall 122 is formed with a through hole 122b having the axis L121 of the peripheral wall 121 as the central axis, penetrating in the direction of the axis L121.
- the sound absorbing material 125 has a columnar shape, and an outer peripheral surface 125a thereof is formed in a cylindrical shape.
- An end surface 125b on one side of the sound absorbing material 125 in the direction of the axis L125 and an end surface 125c on the other side are perpendicular to the axis L125.
- An end face 12 a on the downstream side in the jetting direction of the fire extinguishing gas in the nozzle portion 12 of the jet head 13 is formed on a virtual plane perpendicular to the axis L ⁇ b> 12 of the nozzle portion 12.
- the silencer 17f loads the sound absorbing material 125 into the space in the casing 129 from the mounting portion 123 side in a posture such that the axis L125 thereof coincides or substantially coincides with the axis L121 of the peripheral wall 121.
- the outer thread engraved on the outer peripheral portion of the nozzle portion 12 on the downstream side in the fire extinguishing gas injection direction with respect to the inner screw engraved on the inner peripheral portion of the mounting portion 123 It is configured to be detachable by screwing screws.
- the sound absorbing material 125 has a sound deadening chamber 124 in a state where one end surface 125b and the inner surface 122a of the end wall 122 are in surface contact, and the other end surface 125c and the end surface 12a of the nozzle portion 12 are in surface contact. Is housed. That is, the sound absorbing material 125 is packed in the sound deadening chamber 124 without a gap.
- the hole diameter of the through hole 122b is formed to a size that can effectively discharge the fire extinguishing agent.
- the effective hole diameter part of the through-hole 122b may exist not only in the end wall surface side but in the surrounding wall surface side.
- the effective area of the single wall surface portion can be reduced, so that the silencer 17f can be reduced in size. Further, the sound absorbing device 17f can be downsized by loading the sound absorbing material 125 into the space in the casing 129 without any gap.
- the sound absorbing material 125 is made of a porous metal in which columnar voids are continuous.
- the silencer 17f can gradually expand the extinguishing gas supplied from the side of the branch pipe 19 under reduced pressure, and reduce its flow rate. Thereby, generation
- the fire extinguishing gas released from the nozzle hole 16 can be directly flowed into the porous metal that is the sound absorbing material 125, and The fire extinguishing gas that has flowed into the porous metal can be discharged directly from the through holes 122b.
- the fire extinguishing gas discharged from the nozzle hole 16 directly flows into the sound absorbing material 125, so that the fire extinguishing gas flows into the sound absorbing material 125 before it overexpands immediately after being released from the nozzle hole 16 and generates a shock wave. , Decelerate and spread rapidly.
- the silencer 17f of the present embodiment can gradually expand the extinguishing gas under reduced pressure by the porous metal that is the sound absorbing material 125 to reduce the flow velocity thereof, so that the injection resulting from the injection of the extinguishing gas Generation of sound can be suppressed. Furthermore, since the silencer 17f is configured to suppress the rapid decompression and expansion of the fire extinguishing gas, it is possible to suppress the generation of noise due to the rapid decompression and expansion.
- FIG. 14 is an enlarged cross-sectional view showing a silencer 17g provided in a gas fire extinguishing facility according to still another embodiment of the present invention. Note that parts corresponding to those of the above-described embodiment are denoted by the same reference numerals.
- the silencer 17g is attached to the ejection head 13 provided on the wall surface of the fire extinguishing target section, for example.
- the silencer 17g of the present embodiment is formed by connecting a cylindrical peripheral wall 131, an end wall 132 formed perpendicular to the axis of the peripheral wall 131 at the other axial end of the peripheral wall 131, and the end wall 132. And a mounting portion 133 that is detachably formed on the ejection head 13. An inner screw is engraved on the inner peripheral surface of one end portion in the axial direction of the peripheral wall 131.
- a silencer chamber 140 that is an internal space defined by the peripheral wall 131, the end wall 132, and the ejection head 13 is formed in the silencer 17g.
- the sound deadening chamber 140 includes a columnar first sound absorbing material 134 provided at one end in the axial direction, a columnar second sound absorbing material 135 provided at the other end in the axial direction, a first sound absorbing material 134 and a second sound absorbing material.
- a cylindrical third sound absorbing material 136 provided between the material 135, an annular end plate 141 that supports the first sound absorbing material 134, an annular spacer 142, and a nut 143 are accommodated.
- the first sound absorbing material 134 and the second sound absorbing material 135 are made of a flat columnar porous metal.
- the first sound absorbing material 134 is mounted and accommodated at one axial end of the peripheral wall 131 along the inner peripheral surface, and contacts one surface of the end wall 132 facing the sound deadening chamber 140 and one axial end of the ejection head 13. Provided in contact.
- An annular end plate 141 having a through hole 141a is provided on one end side in the axial direction of the first sound absorbing material 134.
- the end plate 141 is provided in contact with the first sound absorbing material 134 and restricts the movement of the first sound absorbing material 134 toward the one end side in the axial direction.
- a third sound absorbing material 136 is provided on one end of the end plate 141 in the axial direction.
- the third sound absorbing material 136 is realized by the same member as the sound absorbing material 33 of the silencer 17 described above.
- the third sound absorbing material 136 may be realized by a porous metal.
- the third sound absorbing material 136 is mounted and accommodated along the inner peripheral surface of the peripheral wall 131.
- An annular spacer 142 having a through hole 142a is provided on one end side in the axial direction of the third sound absorbing material 136.
- the spacer 142 is provided in contact with the second sound absorbing material 135 and maintains the distance between the third sound absorbing material 136 and the second sound absorbing material 135.
- a second sound absorbing material 135 is provided on one end side of the spacer 142 in the axial direction.
- the second sound absorbing material 135 is formed in the same shape as the first sound absorbing material 134, but may be formed in a shape different from the first sound absorbing material 134.
- the second sound absorbing material 135 is mounted and accommodated along the inner peripheral surface of the peripheral wall 131.
- a nut 143 is provided on the one end side in the axial direction of the second sound absorbing material 135.
- the nut 143 is externally threaded on the outer periphery thereof, and is tightened in a state where the nut 143 is threadedly engaged with the inner thread engraved on the inner peripheral portion on the opening end side of the peripheral wall 131. It supports while pressing to the other end side. Accordingly, the sound absorbing materials 134, 135, and 136, the end plate 141, and the spacer 142 are restricted from being displaced toward the one end side in the axial direction.
- the silencer 17g is provided to accommodate three silencers.
- the silencer 17g can gradually decompress and expand the fire extinguishing gas supplied from the side of the branch pipe 19 to reduce the flow velocity.
- the third sound absorbing material 136 is provided, the third sound absorbing material 136 can absorb the acoustic vibration caused by the fire-extinguishing gas injection flow, and suppress the generation of the injection sound caused by the fire-extinguishing gas injection.
- the second sound absorbing material 135 is provided, the fire extinguishing gas that has passed through the third sound absorbing material 136 can be further depressurized to reduce its flow rate. Thereby, generation
- FIG. 15 is an enlarged cross-sectional view showing a silencer 17h provided in a gas fire extinguishing facility according to still another embodiment of the present invention. Note that parts corresponding to those of the above-described embodiment are denoted by the same reference numerals.
- the silencer 17h is attached to the branch pipe 19 provided on the wall surface of the fire extinguishing target section via the ejection head 13, for example.
- the silencer 17h of the present embodiment includes an ejection head 13, a bottomed cylindrical casing 150, a nut 151 screwed into an opening of the casing 150, a cylindrical first sound absorbing material 152 attached to the ejection head 13, A cylindrical second sound-absorbing material 153 housed in the casing 150 and disposed along the inner peripheral surface of the casing 150, and an annular first sandwiching piece 154 attached to the proximal end portion of the ejection head 13 in the casing 150.
- the disc 150 is held in a state supported by the opening of the casing 150 by a disc-shaped second sandwiching piece 155 provided on the opening side of the casing 150 in contact with the end surface of the ejection head 13 and a nut 151.
- the disc-shaped third sound absorbing material 156 is included.
- the casing 150 includes a cylindrical portion 157 having a right cylindrical shape, a flange portion 158 that protrudes perpendicularly outward in the radial direction from one axial end portion of the cylindrical portion 157, and a radially inner portion from the other axial end portion of the cylindrical portion 157. And an annular end wall portion 159 extending in the direction.
- An external screw 160 is engraved on the outer peripheral portion of the flange portion 158.
- the end wall portion 159 is formed with an insertion hole 161 into which the base end portion of the injection nozzle 13 is fitted on the central axis.
- Such a casing 150 is made of metal.
- the first to third sound absorbing materials 152, 153 and 156 are made of a porous metal similar to that described above.
- the nut 151 includes a cylindrical portion 162 having a right cylindrical shape and a flange portion 163 that protrudes inward in the radial direction from one axial end portion of the cylindrical portion 162.
- An inner screw 164 is engraved on the inner peripheral surface of the other end in the axial direction of the cylindrical portion 162 and is screwed into the outer screw 160 of the casing 150.
- the nut 151 is made of metal and is tightened in a state where the nut 151 is screwed onto the outer screw 160 of the casing 150, so that the peripheral portion of the third sound absorbing material 156 becomes the flange portion 158 of the casing 150 and the flange portion of the nut 151. 163 and the third sound absorbing material 156 and the end wall portion 165 of the ejection head 13, the second holding piece 155 is held, and the second sound absorbing material 153 is prevented from being pulled out from the casing 150. .
- the ejection head 13 includes a hooking portion 166 with which a tightening tool such as a spanner is hooked, a cylindrical portion 167 that is continuous with the hooking portion 166 in the axial direction, and an end wall portion 165 that closes one axial end portion of the cylindrical portion 167.
- nozzle holes 16 are formed penetrating in the thickness direction at intervals of, for example, 90 ° in the circumferential direction.
- An external screw 168 is engraved on the base portion of the cylindrical portion 167 near the engaging portion 166.
- the ejection head 13 is fixed to the casing 150 on the same axis.
- the first sound absorbing material 152 is mounted from the both sides in the axial direction by the first and second sandwiching pieces 154 and 155 in a state where the first sound absorbing material 152 is mounted on the ejection head 13, that is, a state where it is mounted on the cylindrical portion 12 in the casing 150. It is held in a clamped state.
- an annular space 170 is formed between the first sound absorbing material 152 and the second sound absorbing material 153 across the end wall portion 159 of the casing 150 and the third sound absorbing material 156.
- the high-pressure fire extinguishing gas supplied from the branch pipe 19 to the ejection head 13 is ejected from the nozzle holes 16 of the ejection head 13 into the first sound absorbing material 152, and the shock wave is rapidly diffused and decelerated. It is possible to prevent the occurrence of strong turbulence accompanied by noise and to reduce the sound.
- the fire extinguishing gas discharged from the first sound absorbing material 152 into the space 170 enters the second sound absorbing material 153 and is rapidly diffused and decelerated in the same manner as the first sound absorbing material 152. Reflected toward the third sound absorbing material 156.
- the fire extinguishing gas that has entered the third sound absorbing material 156 diffuses and stalls before rapidly expanding, as with the first and second sound absorbing materials 152 and 153 described above.
- the injection sound resulting from the injection can be significantly reduced.
- a plurality of injection nozzles 16 are formed in the cylinder portion 12 of the injection head 13 perpendicularly to the axis thereof to inject a fire extinguishing gas radially outward.
- the nozzle hole 16 inclined toward the opening of the casing 150 is formed in the cylindrical portion of the ejection head 13, and the gas that has passed through the first sound absorbing material 152 is directly applied to the third sound absorbing material 156. It may be configured to be emitted towards the same, and a similar effect can be achieved.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Nozzles (AREA)
Abstract
Description
噴射ヘッドが接続され、噴射ヘッドに高圧の消火ガスを導く導管と、
導管に高圧の消火ガスを供給する消火ガス供給源と、
噴射ヘッドに設けられ、ノズル部からの消火ガスの放出による音響を減衰させる消音装置とを含むことを特徴とするガス消火設備である。
周壁には、複数の通気孔が該周壁の厚み方向に貫通して形成されることを特徴とする。
端壁には、複数の通気孔が該端壁の厚み方向に貫通して形成されることを特徴とする。
端壁には、その厚み方向に貫通するガス放出孔が形成され、
内筒体は、複数の透孔が形成される筒状部と、筒状部の軸線方向一端部に、該筒状部の軸線に垂直に形成される端板とを有することを特徴とする。
噴射ヘッドが接続され、噴射ヘッドに高圧の消火ガスを導く導管と、
導管に高圧の消火ガスを供給する消火ガス供給源とを含み、
噴射ヘッドのノズル部には、前記導管の内周面に滑らかに連なる内周面を有するノズル孔が形成されることを特徴とするガス消火設備である。
噴射ヘッドが接続され、噴射ヘッドに高圧の消火ガスを導く導管と、
導管に高圧の消火ガスを供給する消火ガス供給源と、
噴射ヘッドと導管との間に設けられ、ノズル部からの消火ガスの放出による音響を減衰させる消音装置とを含むことを特徴とするガス消火設備である。
第1の端壁には、周壁の軸線を中心として該第1の端壁の中央部に、少なくとも1つの透孔が該第1の端壁の厚み方向に貫通して形成され、
第2の端壁には、複数の透孔が該第2の端壁の厚み方向に貫通して形成されることを特徴とする。
第1の端壁には、導管から供給される高圧の消火ガスを、周壁、第1の端壁および第2の端壁によって規定される内部空間に噴出する複数のノズル孔を有する案内部が、周壁の軸線上に該内部空間に臨んで形成され、該複数のノズル孔は、周壁の軸線に直交する軸線上に周壁の軸線に関して周方向に等角度で間隔をあけて形成され、
第2の端壁には、複数の透孔が該第2の端壁の厚み方向に貫通して形成されることを特徴とする。
障壁には、複数の透孔が該障壁の厚み方向に貫通して形成され、
導通管には、導通管の軸線方向一端部に噴射ヘッドに着脱可能に連結される連結部が形成され、導通管の軸線方向他端部に端板が形成され、導通管の周壁のうち第1の消音室に突き出された部分には、複数の透孔が該導通管の周壁の厚み方向に貫通して形成され、
通気管は、障壁および第1の端壁を貫通して配置されることを特徴とする。
障壁には、複数の透孔が該障壁の厚み方向に貫通して形成され、
導通管には、導通管の軸線方向一端部に噴射ヘッドに着脱可能に連結される連結部が形成され、導通管の軸線方向他端部に端板が形成され、導通管の周壁のうち第1の消音室に突き出された部分には、複数の透孔が該導通管の周壁の厚み方向に貫通して形成され、
複数の通気管は、周壁の軸線に直交する軸線上に、周壁の軸線に関して周方向に等角度で間隔をあけて配置され、それぞれ周壁を貫通して形成されることを特徴とする。
図1は、本発明の一実施形態のガス消火設備に備えられる消火ガス噴射部11を示す斜視図である。本実施形態のガス消火設備は、建物の消火対象区画内に設けられ、高圧の消火ガスを前記消火対象区画内の空間に向けて噴射するノズル部12を有する噴射ヘッド13と、噴射ヘッド13が接続され、噴射ヘッド13に高圧の消火ガスを導く導管14と、導管14に高圧の不活性ガスを供給する消火ガス供給源15と、噴射ヘッド13に設けられ、ノズル部12に形成されるノズル孔16から噴射される消火ガスの噴射による噴射音などに起因して発生する音響を減衰させる消音装置17とを含む。
12 ノズル部
13,50,50a 噴射ヘッド
14 導管
15 消火ガス供給源
16,71 ノズル孔
17,17a~17h,60,60a 消音装置
18 分岐管
19 枝管
20 基台
21 ブラケット
22 締結具
23 主管
25,35,41,61,81 周壁
26,36,42,64,64a,65,82,84 端壁
27,37,43,62,63,83,123 取付け部
28 噴射方向下流側に臨む部分
29 内筒体
30,66,67,851,874 透孔
31 円筒部
32,872 端板
33 吸音材
34 ガス放出孔
38,44 通気孔
39,45 内部空間
40,46 吸音材
51,52 内周面
55 エッジ部
72 案内部
85 障壁
86,88 消音室
87 導通管
89,89a 通気管
125 吸音材
134 第1吸音材
135 第2吸音材
136 第3吸音材
871 連結部
891 金網
892,892a 消火ガス噴射口
D1,D2 内径
Claims (14)
- 高圧の消火ガスを空間に向けて噴射するノズル部を有する噴射ヘッドと、
噴射ヘッドが接続され、噴射ヘッドに高圧の消火ガスを導く導管と、
導管に高圧の消火ガスを供給する消火ガス供給源と、
噴射ヘッドに設けられ、ノズル部からの消火ガスの放出による音響を減衰させる消音装置とを含むことを特徴とするガス消火設備。 - 消音装置は、筒状の周壁と、周壁の軸線方向一端部に、該周壁の軸線に垂直に形成される端壁と、周壁の軸線方向他端部に、噴射ヘッドに着脱可能に形成される取付け部とを含み、
周壁には、複数の通気孔が該周壁の厚み方向に貫通して形成されることを特徴とする請求項1記載のガス消火設備。 - 消音装置は、筒状の周壁と、周壁の軸線方向一端部に、該周壁の軸線に垂直に形成される端壁と、周壁の軸線方向他端部に、噴射ヘッドに着脱可能に形成される取付け部とを含み、
端壁には、複数の通気孔が該端壁の厚み方向に貫通して形成されることを特徴とする請求項1記載のガス消火設備。 - 周壁、端壁および取付け部によって規定される内部空間には、吸音材が収容されることを特徴とする請求項2または3記載のガス消火設備。
- 消音装置は、筒状の周壁と、周壁の軸線方向一端部に、該周壁の軸線に垂直に形成される端壁と、周壁の軸線方向他端部に、噴射ヘッドが一体的に形成される取付け部と、噴射ヘッドのノズル部における消火ガスの噴射方向下流側に臨む部分に設けられる内筒体とを含み、
端壁には、その厚み方向に貫通するガス放出孔が形成され、
内筒体は、複数の透孔が形成される筒状部と、筒状部の軸線方向一端部に、該筒状部の軸線に垂直に形成される端板とを有することを特徴とする請求項1記載のガス消火設備。 - 高圧の消火ガスを空間に向けて噴射するノズル部を有する噴射ヘッドと、
噴射ヘッドが接続され、噴射ヘッドに高圧の消火ガスを導く導管と、
導管に高圧の消火ガスを供給する消火ガス供給源とを含み、
噴射ヘッドのノズル部には、前記導管の内周面に滑らかに連なる内周面を有するノズル孔が形成されることを特徴とするガス消火設備。 - 高圧の消火ガスを空間に向けて噴射するノズル部を有する噴射ヘッドと、
噴射ヘッドに高圧の消火ガスを導く導管と、
導管に高圧の消火ガスを供給する消火ガス供給源と、
噴射ヘッドと導管との間に設けられ、ノズル部からの消火ガスの放出による音響を減衰させる消音装置とを含むことを特徴とするガス消火設備。 - 前記消音装置は、筒状の周壁と、周壁の軸線方向一端部に、導管に着脱可能に形成される第1の取付け部と、周壁の軸線方向他端部に、噴射ヘッドに着脱可能に形成される第2の取付け部と、前記一端部に周壁の軸線に垂直に形成される第1の端壁と、前記他端部に周壁の軸線に垂直に形成される第2の端壁とを含み、
第1の端壁には、周壁の軸線を中心として該第1の端壁の中央部に、少なくとも1つの透孔が該第1の端壁の厚み方向に貫通して形成され、
第2の端壁には、複数の透孔が該第2の端壁の厚み方向に貫通して形成されることを特徴とする請求項7記載のガス消火設備。 - 前記消音装置は、筒状の周壁と、周壁の軸線方向一端部に、導管に着脱可能に形成される第1の取付け部と、周壁の軸線方向他端部に、噴射ヘッドに着脱可能に形成される第2の取付け部と、前記一端部に周壁の軸線に垂直に形成される第1の端壁と、前記他端部に周壁の軸線に垂直に形成される第2の端壁とを含み、
第1の端壁には、導管から供給される高圧の消火ガスを、周壁、第1の端壁および第2の端壁によって規定される内部空間に噴出する複数のノズル孔を有する案内部が、周壁の軸線上に該内部空間に臨んで形成され、該複数のノズル孔は、周壁の軸線に直交する軸線上に周壁の軸線に関して周方向に等角度で間隔をあけて形成され、
第2の端壁には、複数の透孔が該第2の端壁の厚み方向に貫通して形成されることを特徴とする請求項7記載のガス消火設備。 - 前記消音装置は、筒状の周壁と、周壁の軸線方向一端部に、該周壁の軸線に垂直に形成される第1の端壁と、噴射ヘッドに着脱可能に形成される取付け部を有し、周壁の軸線方向他端部に該周壁の軸線に垂直に形成される第2の端壁と、第1の端壁と第2の端壁との間に、周壁の軸線に垂直に形成される障壁と、噴射ヘッドから噴射される消火ガスを、周壁、第1の端壁および障壁によって規定される内部空間である第1の消音室に導く円筒状の導通管と、周壁、第2の端壁および障壁によって規定される内部空間である第2の消音室内の消火ガスを外部に導く筒状の通気管とを含み、
障壁には、複数の透孔が該障壁の厚み方向に貫通して形成され、
導通管には、導通管の軸線方向一端部に噴射ヘッドに着脱可能に連結される連結部が形成され、導通管の軸線方向他端部に端板が形成され、導通管の周壁のうち第1の消音室に突き出された部分には、複数の透孔が該導通管の周壁の厚み方向に貫通して形成され、
通気管は、障壁および第1の端壁を貫通して配置されることを特徴とする請求項1記載のガス消火設備。 - 前記消音装置は、筒状の周壁と、周壁の軸線方向一端部に、該周壁の軸線に垂直に形成される第1の端壁と、噴射ヘッドに着脱可能に形成される取付け部を有し、周壁の軸線方向他端部に該周壁の軸線に垂直に形成される第2の端壁と、第1の端壁と第2の端壁との間に、周壁の軸線に垂直に形成される障壁と、噴射ヘッドから噴射される消火ガスを、周壁、第1の端壁および障壁によって規定される内部空間である第1の消音室に導く筒状の導通管と、周壁、第2の端壁および障壁によって規定される内部空間である第2の消音室内の消火ガスを外部に導く筒状の複数の通気管とを含み、
障壁には、複数の透孔が該障壁の厚み方向に貫通して形成され、
導通管には、導通管の軸線方向一端部に噴射ヘッドに着脱可能に連結される連結部が形成され、導通管の軸線方向他端部に端板が形成され、導通管の周壁のうち第1の消音室に突き出された部分には、複数の透孔が該導通管の周壁の厚み方向に貫通して形成され、
複数の通気管は、周壁の軸線に直交する軸線上に、周壁の軸線に関して周方向に等角度で間隔をあけて配置され、それぞれ周壁を貫通して形成されることを特徴とする請求項1記載のガス消火設備。 - 前記消音装置は、
筒状の周壁と、
周壁の軸線方向一端部に、該周壁の軸線に垂直に形成される端壁と、
噴射ヘッドに着脱可能に形成される取付け部と、
周壁、端壁および噴射ヘッドによって規定される内部空間に収容される、多孔質の金属から成る吸音材とを含むことを特徴とする請求項1記載のガス消火設備。 - 前記吸音材は、
周壁の軸線方向一端部に設けられる第1吸音材と、前記軸線方向他端部に設けられる第2吸音材とを含むことを特徴とする請求項12記載のガス消火設備。 - 前記第1吸音材と前記第2吸音材との間に設けられる、第3吸音材をさらに含むことを特徴とする請求項13記載のガス消火設備。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10824851.9A EP2491984B1 (en) | 2009-10-23 | 2010-10-14 | Gas fire-extinguishing facility |
KR1020127013224A KR101352714B1 (ko) | 2009-10-23 | 2010-10-14 | 가스소화설비 |
KR1020137023062A KR101412253B1 (ko) | 2009-10-23 | 2010-10-14 | 가스소화설비 |
US13/503,441 US9457214B2 (en) | 2009-10-23 | 2010-10-14 | Gas fire-extinguishing apparatus |
EP17178419.2A EP3243552B1 (en) | 2009-10-23 | 2010-10-14 | Gas fire-extinguishing apparatus |
CN201080047808.5A CN102573998B (zh) | 2009-10-23 | 2010-10-14 | 气体灭火设备 |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009244986 | 2009-10-23 | ||
JP2009-244986 | 2009-10-23 | ||
JP2010-023575 | 2010-02-04 | ||
JP2010023575 | 2010-02-04 | ||
JP2010086586 | 2010-04-02 | ||
JP2010-086586 | 2010-04-02 | ||
JP2010161096A JP5276630B2 (ja) | 2009-10-23 | 2010-07-15 | ガス消火設備 |
JP2010-161096 | 2010-07-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011049002A1 true WO2011049002A1 (ja) | 2011-04-28 |
Family
ID=43900229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/068087 WO2011049002A1 (ja) | 2009-10-23 | 2010-10-14 | ガス消火設備 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9457214B2 (ja) |
EP (2) | EP3243552B1 (ja) |
JP (1) | JP5276630B2 (ja) |
KR (2) | KR101412253B1 (ja) |
CN (3) | CN102573998B (ja) |
WO (1) | WO2011049002A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130292140A1 (en) * | 2012-05-03 | 2013-11-07 | Yasushi Inoue | Injection head having silencing function for gas type fire extinguisher |
US20140069663A1 (en) * | 2012-02-21 | 2014-03-13 | Koatsu Co., Ltd. | Injection head having silencing function for gas-type fire extinguisher |
EP2707104A4 (en) * | 2011-05-12 | 2015-08-19 | Fike Corp | NOZZLE FOR AN INERT GAS SUPPRESSION SYSTEM |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5276630B2 (ja) | 2009-10-23 | 2013-08-28 | エア・ウォーター防災株式会社 | ガス消火設備 |
JP4988945B2 (ja) * | 2009-10-23 | 2012-08-01 | エア・ウォーター防災株式会社 | ガス消火設備 |
JP5972518B2 (ja) * | 2009-11-02 | 2016-08-17 | 株式会社コーアツ | ガス系消火設備用の消音機能を有する噴射ヘッド |
JP2011120797A (ja) * | 2009-12-11 | 2011-06-23 | Air Water Safety Service Inc | 消火ガス噴射装置 |
JP5276728B1 (ja) * | 2012-02-21 | 2013-08-28 | 株式会社コーアツ | ガス系消火設備用の消音機能を有する噴射ヘッド |
JP5276730B1 (ja) * | 2012-03-21 | 2013-08-28 | 株式会社コーアツ | ガス系消火設備用の消音機能を有する噴射ヘッド |
JP6305688B2 (ja) * | 2013-04-17 | 2018-04-04 | 株式会社コーアツ | ガス系消火設備用の消音機能を有する噴射ヘッド |
JP5989591B2 (ja) * | 2013-04-17 | 2016-09-07 | 株式会社コーアツ | ガス系消火設備用の消音機能を有する噴射ヘッド |
JP6196955B2 (ja) * | 2013-10-02 | 2017-09-13 | エア・ウォーター防災株式会社 | 消火ガス噴射装置およびそれを備えたガス消火装置 |
KR102108374B1 (ko) | 2013-10-25 | 2020-05-08 | 삼성전자주식회사 | 스토리지 시스템 및 그것의 비신호 분석 방법 |
GB2543357A (en) * | 2015-10-16 | 2017-04-19 | Graviner Ltd Kidde | Fire supression systems |
WO2017096261A1 (en) | 2015-12-04 | 2017-06-08 | Tyco Fire Products Lp | Low pressure drop acoustic suppressor nozzle for inert gas discharge system |
US10507343B2 (en) * | 2015-12-04 | 2019-12-17 | Tyco Fire Products Lp | Low pressure drop acoustic suppressor nozzle for fire protection inert gas discharge system |
CN105641841A (zh) * | 2016-01-25 | 2016-06-08 | 维梯埃消防设备(上海)有限公司 | 一种消音装置 |
RU2717772C1 (ru) * | 2016-06-13 | 2020-03-25 | Коацу Ко., Лтд. | Огнетушитель |
CN106247037A (zh) * | 2016-08-25 | 2016-12-21 | 吴速 | 一种灭火介质输送带及其快速放带盘 |
KR102620362B1 (ko) * | 2016-08-31 | 2024-01-04 | 삼성전자주식회사 | 공기조화기 |
JP6779735B2 (ja) * | 2016-10-07 | 2020-11-04 | ニッタン株式会社 | ガス消火設備用ガス放出ノズル |
EP3311886A1 (de) * | 2016-10-20 | 2018-04-25 | Siemens Schweiz AG | Schallgedämpfte löschdüsenanordnung mit frequenzselektiver schalldämpfschicht sowie geeignete verwendung |
JP6363318B1 (ja) | 2016-12-26 | 2018-07-25 | 株式会社コーアツ | ガス系消火設備用の消音機能を有する噴射ヘッド及びその保管・組立方法 |
CN113413566A (zh) * | 2017-05-19 | 2021-09-21 | 株式会社高压 | 液化灭火剂用喷头 |
US11117007B2 (en) * | 2017-11-10 | 2021-09-14 | Carrier Corporation | Noise reducing fire suppression nozzles |
TWI799647B (zh) * | 2018-10-02 | 2023-04-21 | 日商高壓股份有限公司 | 液態滅火劑用噴射頭 |
CN114599430A (zh) * | 2019-08-09 | 2022-06-07 | 泰科消防产品有限合伙公司 | 灭火喷嘴和系统 |
EP4096797A1 (en) * | 2020-01-31 | 2022-12-07 | Carrier Corporation | Low noise discharge nozzle |
US20210291000A1 (en) * | 2020-03-20 | 2021-09-23 | Kidde Technologies, Inc. | Fire suppression systems and methods of controlling flow of fire suppressant agents in fire suppression systems |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0660449U (ja) * | 1993-01-29 | 1994-08-23 | 株式会社クボタ | 空気圧ノズル |
JPH08173565A (ja) | 1994-12-22 | 1996-07-09 | Koatsu:Kk | 不活性ガス消火設備における消火方法及びその設備 |
JPH1190285A (ja) * | 1997-09-17 | 1999-04-06 | Kenki Engineering:Kk | 局部塗装方法および装置 |
JP2003530922A (ja) * | 2000-04-17 | 2003-10-21 | コトライアー・イガー・ケイ | 有人環境での低酸素濃度火災予防システム及び火災抑止システム並びに呼吸可能な消火性組成物 |
JP2006175294A (ja) * | 2004-12-20 | 2006-07-06 | Matsushita Electric Works Ltd | 液体ノズル |
JP2007167557A (ja) * | 2005-12-26 | 2007-07-05 | Gastar Corp | 微細気泡噴出ノズル及びそれを利用した微細気泡発生装置 |
Family Cites Families (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1811762A (en) * | 1929-05-08 | 1931-06-23 | Burgess Lab Inc C F | Exhaust muffler |
US1844106A (en) | 1929-05-08 | 1932-02-09 | Burgess Lab Inc C F | Exhaust muffler |
US1844105A (en) * | 1929-05-08 | 1932-02-09 | Burgess Lab Inc C F | Exhaust muffler |
US1844104A (en) * | 1929-05-08 | 1932-02-09 | Burgess Lab Inc C F | Exhaust muffler |
US2030017A (en) | 1930-09-26 | 1936-02-04 | Mile Raymond | Automatic smoke preventer |
US1968456A (en) | 1932-07-28 | 1934-07-31 | Burgess Lab Inc C F | Gaseous pressure wave absorbing construction |
US2376933A (en) | 1943-01-04 | 1945-05-29 | Stone Wheel Inc | Spark and flame arrestor |
US2442773A (en) | 1944-05-05 | 1948-06-08 | Bell Telephone Labor Inc | Sound suppressor |
US2559408A (en) * | 1946-10-11 | 1951-07-03 | Pyrene Mfg Co | Fire extinguisher nozzle for vehicles |
US2600236A (en) * | 1948-11-16 | 1952-06-10 | Esther Larsen | Muffler with a plurality of passages |
US2792760A (en) * | 1954-03-26 | 1957-05-21 | Hammer Alexander | Combination flash eliminator and stabilizer for a firearm |
US3339668A (en) | 1965-03-18 | 1967-09-05 | C W Morris Company | Air exhaust noise attenuator |
US3672465A (en) * | 1970-10-15 | 1972-06-27 | Blatt Leland F | Gas exhaust silencer |
US3960239A (en) | 1973-08-15 | 1976-06-01 | Barry Wright Corporation | Noise-reducing fluid-flow devices |
JPS515799U (ja) * | 1974-06-29 | 1976-01-16 | ||
US3949828A (en) | 1974-08-30 | 1976-04-13 | Barry Wright Corporation | Fluid exhaust silencer |
JPS5512824Y2 (ja) * | 1975-08-05 | 1980-03-22 | ||
JPS6033544B2 (ja) | 1977-03-17 | 1985-08-03 | 株式会社豊田中央研究所 | 低騒音用圧力流体放出装置 |
JPS5644423Y2 (ja) * | 1978-07-12 | 1981-10-17 | ||
JPS56161110U (ja) * | 1980-04-30 | 1981-12-01 | ||
JPS58103100U (ja) * | 1982-01-06 | 1983-07-13 | 横河電機株式会社 | 空気パ−ジ用消音器 |
JPS5933450U (ja) | 1982-08-25 | 1984-03-01 | ニツタン株式会社 | ガス系消火設備の試験用ガス排出管の消音器 |
JPS60175718A (ja) * | 1984-02-22 | 1985-09-09 | Nippon Soken Inc | 内燃機関用消音器 |
JPH0332736Y2 (ja) * | 1985-03-22 | 1991-07-11 | ||
JPH0640896Y2 (ja) * | 1987-11-13 | 1994-10-26 | 日酸運輸株式会社 | サイレンサー |
SU1657679A1 (ru) * | 1989-02-28 | 1991-06-23 | Московский автомеханический институт | Глушитель шума газовой струи |
US5250094A (en) * | 1992-03-16 | 1993-10-05 | Donaldson Company, Inc. | Ceramic filter construction and method |
JP3093440B2 (ja) | 1992-05-26 | 2000-10-03 | 日本電気株式会社 | 光磁気記録媒体及びその製造方法 |
JPH0742849B2 (ja) * | 1992-06-30 | 1995-05-15 | 三和産業株式会社 | コンクリートモルタル吹付機の排気用消音装置 |
JPH0647683A (ja) | 1992-07-08 | 1994-02-22 | Shuichi Teramoto | ホースベルトの離脱装置およびホースの離脱装置 |
US5511621A (en) * | 1994-04-08 | 1996-04-30 | Factory Mutual Research | Local flooding fine water spray fire suppression system using recirculation principles |
US5799652A (en) | 1995-05-22 | 1998-09-01 | Hypoxico Inc. | Hypoxic room system and equipment for Hypoxic training and therapy at standard atmospheric pressure |
US6314754B1 (en) | 2000-04-17 | 2001-11-13 | Igor K. Kotliar | Hypoxic fire prevention and fire suppression systems for computer rooms and other human occupied facilities |
JPH09124302A (ja) | 1995-10-30 | 1997-05-13 | Masayuki Imai | 酸素濃縮器 |
JPH09324617A (ja) * | 1996-06-04 | 1997-12-16 | Ndc Co Ltd | 消音器 |
JP3037617B2 (ja) * | 1996-07-15 | 2000-04-24 | シーケーディ株式会社 | 消音器及びその製造方法 |
DE19719535A1 (de) | 1996-10-16 | 1998-04-23 | Gerd Schwertfeger | Vorrichtung zur Schalldämpfung |
JPH11325655A (ja) | 1998-05-14 | 1999-11-26 | Matsushita Seiko Co Ltd | 消音器および空気調和機 |
US6112850A (en) * | 1999-09-07 | 2000-09-05 | Met Pro Corporation | Acoustic silencer nozzle |
CN2406694Y (zh) * | 2000-02-29 | 2000-11-22 | 丁一 | 气体灭火喷嘴 |
IT1317475B1 (it) * | 2000-05-05 | 2003-07-09 | Vesta S R L | Ugello silenziato per la scarica di gas estinguenti. |
EP1372793B1 (en) * | 2001-03-29 | 2006-11-22 | Kidde IP Holdings Limited | Fire and explosion suppression agent |
DE20120671U1 (de) * | 2001-12-21 | 2002-03-14 | TOTAL WALTHER GmbH, Feuerschutz und Sicherheit, 51069 Köln | Feuerlöschanlage |
JP2003206718A (ja) * | 2002-01-16 | 2003-07-25 | Fuji Heavy Ind Ltd | 消音器 |
JP4196181B2 (ja) | 2003-04-25 | 2008-12-17 | 英雄 中嶋 | 吸音材料 |
JP2005002873A (ja) | 2003-06-11 | 2005-01-06 | Aisin Seiki Co Ltd | 消音器 |
BRPI0416612A (pt) | 2003-11-20 | 2007-01-16 | Air Institution Inc | filtro e sistema de filtragem de gás de descarga |
JP4613619B2 (ja) * | 2005-01-13 | 2011-01-19 | Smc株式会社 | サイレンサ |
JP2006296491A (ja) * | 2005-04-15 | 2006-11-02 | Air Water Safety Service Inc | 液体噴射用発泡ノズル |
JP2006307719A (ja) * | 2005-04-27 | 2006-11-09 | Calsonic Kansei Corp | 車両用消音器 |
US7587969B2 (en) * | 2005-08-26 | 2009-09-15 | Robert Silvers | Asymmetric firearm silencer with coaxial elements |
KR100655293B1 (ko) * | 2005-11-23 | 2006-12-08 | 대우조선해양 주식회사 | 장거리 기류이송용 축류식 터보 제트팬 |
JP4969300B2 (ja) * | 2006-05-18 | 2012-07-04 | 英夫 吉田 | 消火ガス噴射器 |
KR100755722B1 (ko) | 2007-03-08 | 2007-09-05 | 한국뉴매틱(주) | 공압장치용 사일렌서 |
CN101366997B (zh) * | 2008-06-30 | 2011-07-20 | 芜湖世纪凯旋消防设备有限公司 | 一种气体灭火系统的灭火剂喷头 |
JP5276630B2 (ja) | 2009-10-23 | 2013-08-28 | エア・ウォーター防災株式会社 | ガス消火設備 |
-
2010
- 2010-07-15 JP JP2010161096A patent/JP5276630B2/ja active Active
- 2010-10-14 US US13/503,441 patent/US9457214B2/en active Active
- 2010-10-14 KR KR1020137023062A patent/KR101412253B1/ko active IP Right Grant
- 2010-10-14 EP EP17178419.2A patent/EP3243552B1/en active Active
- 2010-10-14 CN CN201080047808.5A patent/CN102573998B/zh active Active
- 2010-10-14 CN CN201410226960.XA patent/CN104014097B/zh active Active
- 2010-10-14 KR KR1020127013224A patent/KR101352714B1/ko active IP Right Grant
- 2010-10-14 EP EP10824851.9A patent/EP2491984B1/en active Active
- 2010-10-14 CN CN201610528048.9A patent/CN106139480A/zh active Pending
- 2010-10-14 WO PCT/JP2010/068087 patent/WO2011049002A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0660449U (ja) * | 1993-01-29 | 1994-08-23 | 株式会社クボタ | 空気圧ノズル |
JPH08173565A (ja) | 1994-12-22 | 1996-07-09 | Koatsu:Kk | 不活性ガス消火設備における消火方法及びその設備 |
JPH1190285A (ja) * | 1997-09-17 | 1999-04-06 | Kenki Engineering:Kk | 局部塗装方法および装置 |
JP2003530922A (ja) * | 2000-04-17 | 2003-10-21 | コトライアー・イガー・ケイ | 有人環境での低酸素濃度火災予防システム及び火災抑止システム並びに呼吸可能な消火性組成物 |
JP2006175294A (ja) * | 2004-12-20 | 2006-07-06 | Matsushita Electric Works Ltd | 液体ノズル |
JP2007167557A (ja) * | 2005-12-26 | 2007-07-05 | Gastar Corp | 微細気泡噴出ノズル及びそれを利用した微細気泡発生装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2491984A4 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2707104A4 (en) * | 2011-05-12 | 2015-08-19 | Fike Corp | NOZZLE FOR AN INERT GAS SUPPRESSION SYSTEM |
US20140069663A1 (en) * | 2012-02-21 | 2014-03-13 | Koatsu Co., Ltd. | Injection head having silencing function for gas-type fire extinguisher |
CN104159642A (zh) * | 2012-02-21 | 2014-11-19 | 株式会社高压 | 气体类灭火设备用的具有消音功能的喷射头 |
TWI566804B (zh) * | 2012-02-21 | 2017-01-21 | 高壓股份有限公司 | 氣體系滅火設備用的具有消音功能的噴射頭 |
US10258816B2 (en) * | 2012-02-21 | 2019-04-16 | Koatsu Co., Ltd. | Injection head having silencing function for gas-type fire extinguisher |
US20130292140A1 (en) * | 2012-05-03 | 2013-11-07 | Yasushi Inoue | Injection head having silencing function for gas type fire extinguisher |
US9597537B2 (en) * | 2012-05-03 | 2017-03-21 | Koatsu Co., Ltd. | Injection head having silencing function for gas type fire extinguisher |
Also Published As
Publication number | Publication date |
---|---|
CN102573998B (zh) | 2014-12-03 |
US9457214B2 (en) | 2016-10-04 |
EP3243552C0 (en) | 2024-03-06 |
CN106139480A (zh) | 2016-11-23 |
EP2491984A1 (en) | 2012-08-29 |
EP2491984B1 (en) | 2020-02-19 |
JP2011255152A (ja) | 2011-12-22 |
KR101352714B1 (ko) | 2014-01-16 |
EP2491984A4 (en) | 2015-10-07 |
CN104014097B (zh) | 2017-12-19 |
KR20120093305A (ko) | 2012-08-22 |
EP3243552A2 (en) | 2017-11-15 |
CN104014097A (zh) | 2014-09-03 |
US20120205128A1 (en) | 2012-08-16 |
EP3243552A3 (en) | 2018-02-21 |
CN102573998A (zh) | 2012-07-11 |
KR101412253B1 (ko) | 2014-06-25 |
JP5276630B2 (ja) | 2013-08-28 |
KR20130112952A (ko) | 2013-10-14 |
EP3243552B1 (en) | 2024-03-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5276630B2 (ja) | ガス消火設備 | |
JP6595557B2 (ja) | 消火ガス噴射装置およびガス消火設備 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080047808.5 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10824851 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13503441 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010824851 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 20127013224 Country of ref document: KR Kind code of ref document: A |