JPH0453574A - Fire extinguishing nozzle for powdery fire extinguishing apparatus - Google Patents
Fire extinguishing nozzle for powdery fire extinguishing apparatusInfo
- Publication number
- JPH0453574A JPH0453574A JP16378290A JP16378290A JPH0453574A JP H0453574 A JPH0453574 A JP H0453574A JP 16378290 A JP16378290 A JP 16378290A JP 16378290 A JP16378290 A JP 16378290A JP H0453574 A JPH0453574 A JP H0453574A
- Authority
- JP
- Japan
- Prior art keywords
- fire extinguishing
- extinguishing agent
- nozzle
- orifice holes
- orifice
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000843 powder Substances 0.000 claims description 37
- 239000003795 chemical substances by application Substances 0.000 claims description 32
- 238000009792 diffusion process Methods 0.000 claims description 24
- 230000000694 effects Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 abstract description 5
- 239000006185 dispersion Substances 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
０産業上の利用分野
本発明は、粉末消火設備の消火ノズルに関するものであ
る。より詳しくは、全域放出方式の粉末消火設備におい
て、消火対象区画の全域に均一に消火剤を散布するため
の消火ノズルに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a fire extinguishing nozzle for powder fire extinguishing equipment. More specifically, the present invention relates to a fire extinguishing nozzle for uniformly dispersing a fire extinguishing agent over the entire area of a section to be extinguished in an area discharge type powder fire extinguishing system.
Ｏ従来技術
粉末消火設備を使用する固定式の消火設備は、従来、消
火対象を部分的なものとする局所放出方式のみが実用化
されていて、全域放出方式のものは、はとんど使用され
ていない。O Conventional technology Regarding fixed fire extinguishing equipment that uses powder fire extinguishing equipment, only the local discharge method that targets only partial extinguishing has been put into practical use, and the whole area discharge method is rarely used. It has not been.
従来の消火ノズルの例を第１１図に、その消火対象パタ
ーンを第１２図に示す。第１１図において、消火ノズル
本体２１の入口側にはテーパ内ねじ２２を形成し、消火
設備配管２０を接続できるようにする。出口側内部は円
筒形部２３を形成し、その内部に円筒と円錐を複合した
形状のノズルチップ２４をはめ込み、消火ノズル本体２
１に施したねじ穴を利用して止めねじ２５により抜は止
めとする。円筒形部２３の先端延長部はさらに角度βと
なるよう外開きの円錐形に加工し、その内面に相対する
位置のノズルチップ２４の円錐面に垂直にオリフィス孔
２６を開口する。上記の形状とすることにより、ノズル
チップ２４の円錐面２４ａの角度γは、そのままオリフ
ィス口２６がら噴射する粉末消火剤の放射角度となるが
、その消火剤の一部は角度βをなす円錐面２３ａに衝突
して、図の矢印Ｘ方向に向い、また、消火剤の一部は角
度γの方向に直進して矢印Ｙ方向に向い、これらが交差
し干渉する結果、第１２図に示す、角度αで表される円
錐形の粉末放射パターンが形成される。この場合、消火
に有効な範囲は、第１２図の角度αの円錐形のパターン
の内側に限られ、がっ、その角度αは、第１１図の円錐
面２３ａの角度βと、ノズルチップ２４の円錐面２４ａ
の角度γに依存することとなる。An example of a conventional fire extinguishing nozzle is shown in FIG. 11, and its extinguishing target pattern is shown in FIG. 12. In FIG. 11, a tapered internal thread 22 is formed on the inlet side of the fire extinguishing nozzle main body 21 so that a fire extinguishing equipment piping 20 can be connected thereto. The inside of the exit side forms a cylindrical part 23, into which a nozzle tip 24 having a combination of a cylinder and a cone is fitted, and the fire extinguishing nozzle main body 2
The screw hole provided in 1 is used to prevent removal with a set screw 25. The distal end extension of the cylindrical portion 23 is further processed into a conical shape opening outward at an angle β, and an orifice hole 26 is opened perpendicularly to the conical surface of the nozzle tip 24 at a position opposite to the inner surface thereof. With the above shape, the angle γ of the conical surface 24a of the nozzle tip 24 becomes the radiation angle of the dry powder extinguishing agent injected from the orifice port 26, but a part of the extinguishing agent is radiated from the conical surface forming the angle β. 23a and heads in the direction of the arrow X in the figure, and a part of the extinguishing agent goes straight in the direction of the angle γ and heads in the direction of the arrow Y, and as a result of these intersecting and interfering, as shown in FIG. A conical powder radiation pattern is formed, represented by an angle α. In this case, the effective range for extinguishing the fire is limited to the inside of the conical pattern with the angle α shown in FIG. conical surface 24a of
It depends on the angle γ.
Ｏ発明が解決しようとする課題
上述の従来型の消火ノズルの場合、次のような問題点が
る。Problems to be Solved by the Invention The above-mentioned conventional fire extinguishing nozzle has the following problems.
（１）消火ノズルの床面からの取付高さをＨとし、床面
の消火可能面積をＡとした場合、消火対象とすべき区画
の空間の体積Ｖは、
Ｖ＝ＡＨ
となるべきであるが、実際に消火可能な体積Ｖ′は、角
度αの円錐面の内面に限られるため第１２図を参照すれ
ば、
Ｖ’＝ １／３−ＡＨ
となり、残りの３分の２の体積の部分は、消火不能であ
る。(1) If the installation height of the fire extinguishing nozzle from the floor is H and the fire extinguishable area of the floor is A, then the volume V of the space in the compartment to be targeted for fire extinguishing should be V = AH. However, the volume V' that can actually be extinguished is limited to the inner surface of the conical surface with the angle α, so referring to Figure 12, V' = 1/3 - AH, and the remaining two-thirds of the volume is Parts are non-extinguishable.
（２）第１２図の消火ノズルにおいて角度γを小さくし
、角度βを大きくすれば、円錐角度αは大きくなるが、
放射角度Ｘ及びＹも外側に広がるため、放射された粉末
消火剤の分布が円錐の外周辺に密になったドーナツ状と
なり、いわゆる「中抜は現象」により逆に中央部の消火
が困難となる。(2) In the fire extinguishing nozzle shown in Fig. 12, if the angle γ is made smaller and the angle β is made larger, the cone angle α becomes larger;
Since the radiation angles X and Y also spread outward, the distribution of the emitted powder fire extinguishing agent becomes denser in the outer periphery of the cone, forming a doughnut-like shape, making it difficult to extinguish the fire in the center due to the so-called "hollowing phenomenon." Become.
（３）いずれにしても、消火対象区画の、天井に近い上
方の部分、即ち消火ノズルがら見て直角の内面は消火ノ
ズルから速くなるほど、消火が困難となっている。(3) In any case, the higher the speed from the extinguishing nozzle, the more difficult it is to extinguish the upper part of the section to be extinguished near the ceiling, that is, the inner surface perpendicular to the extinguishing nozzle.
さらに、従来の消火ノズルが、構造・形状に多少の差は
あっても、上記の説明のような局所放出方式にしか使用
できない理由として、法律の規定に基づく設置基準の問
題点がある。Furthermore, the reason why conventional fire extinguishing nozzles can only be used for the localized discharge method as explained above, even though there are some differences in structure and shape, is that there are problems with the installation standards based on the provisions of the law.
局所放出方式の粉末消火設備では、例えば、第３種粉末
消火剤を使用する場合は、対象とする消火対象区画１ｍ
’当り、少なくとも０．８８ｋｇの量が必要（消防法施
行規則第２１条第３項２号の口）とされるが、一方、全
域放出方式の場合は、同一の体積当り０．３６ｋｇ以上
（消防法施行規則第２１条第３項１号イ）と定められて
いるから、局所放出方式に必要な粉末消火剤量は、全域
放出方式のそれの約２．５倍に達している。従って、局
所放出方式の場合、上記の（２）の説明のような、粉末
消火剤分布の相当なムラがあるような消火ノズルであっ
ても容易に消火できるようになっている。しかも、第１
２図で分かるように、対象区画全体をカバーできるよう
にするには、面積Ａを小さくせざるを得す、その場合、
粉末消火剤の量は、比率がもっとも大きくなるという欠
点がある。For local discharge type powder extinguishing equipment, for example, when using Type 3 powder extinguishing agent, the area to be extinguished is 1 m.
(2) Article 21, Paragraph 3, Item 2 of the Fire Service Act Enforcement Regulations) is required per volume of at least 0.88 kg (Article 21, Paragraph 3, Item 2 of the Fire Service Act Enforcement Regulations); As stipulated in Article 21, Paragraph 3, Item 1, A) of the Fire Service Act Enforcement Regulations, the amount of powder extinguishing agent required for the local release method is approximately 2.5 times that for the area release method. Therefore, in the case of the local discharge method, even if the fire extinguishing nozzle has a considerably uneven distribution of powder extinguishing agent as described in (2) above, it is possible to easily extinguish the fire. Moreover, the first
As can be seen in Figure 2, in order to cover the entire target area, the area A must be reduced, in which case,
The amount of powder extinguishing agent has the disadvantage of being the largest in proportion.
従って、これらの一般的な局所放出方式用の消火ノズル
を、全域放出方式用に使用すると、法律に定められた最
小の量よりも遥かに多量の消火剤を用意するか、又は、
消火剤の量を法律のとおりとして、多数の消火ノズルを
区画内に配置して、空間内全域をカバーするようにした
ものとしなければならない問題点がある。Therefore, if these common local fire extinguishing nozzles are used for a general area fire extinguishing system, the amount of extinguishing agent will be much larger than the minimum amount required by law, or
There is a problem in that a large number of fire extinguishing nozzles must be arranged within a compartment to cover the entire area within the space while keeping the amount of extinguishing agent in accordance with the law.
０課題を解決するための手段
本願発明は、ノズル本体の内面を、入口寄りの円筒面と
、先端寄りの円錐面とで構成し、円筒面に直角に複数の
第１オリフィス孔を穿ち、円錐面に直角に複数の第２オ
リフィス孔を穿ち、第２オリフィス孔の下方に位置する
ノズル本体の先端部に、円錐面の複数の第２オリフィス
孔の軸芯延長線と交差するように位置させて（その軸芯
をノズル本体の平面視で第２オリフィス孔の軸芯延長線
とほぼ一致させて）、複数の拡散棒を放射状に突出させ
る。In the present invention, the inner surface of the nozzle body is composed of a cylindrical surface near the inlet and a conical surface near the tip, and a plurality of first orifice holes are bored perpendicularly to the cylindrical surface. A plurality of second orifice holes are bored perpendicularly to the surface, and positioned at the tip of the nozzle body located below the second orifice holes so as to intersect with the axial extension of the plurality of second orifice holes on the conical surface. (with their axes substantially aligned with the axial extension line of the second orifice hole in a plan view of the nozzle body), and the plurality of diffusion rods are made to protrude radially.
０作用
消火ノズル本体の入口に近い側の円筒面の第１オリフィ
ス孔から放射される粉末消火剤は、消火対象区画の天井
直下及びそれより下方の水平面をカバーし、消火ノズル
の円錐面の第２オリフィス孔から放射される粉末消火剤
は、角度θで拡散棒に衝突して、十分に拡散しながら斜
め下方の広い空間範囲をカバーする。この場合、拡散棒
による拡散作用は、気流が棒に衝突して著しく乱れるこ
とにより生じるものであり、粉末消火剤を含む気体と固
体の混合流によるものである。The powder extinguishing agent emitted from the first orifice hole on the cylindrical surface on the side near the entrance of the zero-action fire extinguishing nozzle body covers the horizontal plane just below the ceiling of the area to be extinguished and below it, and The powder extinguishing agent emitted from the two orifices collides with the diffusion rod at an angle θ and is sufficiently diffused to cover a wide spatial range diagonally downward. In this case, the diffusion effect by the diffusion rod is caused by the air flow striking the rod and being significantly disturbed, and is caused by a mixed flow of gas and solid containing the powder extinguishing agent.
Ｏ実施例
以下、図面に示す実施例にもとづいて本発明を説明する
。O Examples The present invention will be described below based on examples shown in the drawings.
第１図及至第３図を参照して、消火ノズル本体１の入口
にテーバねじ２を形成し、消火設備配管２０を接続でき
るようにする。入口に近い側の内部は円筒面３に形成し
、その外側から円筒面３に直角に向けて複数の第１オリ
フィス孔４・４・・・を穿つ。入口に遠い側の内部は円
錐面５に形成し、その外側から円錐面５に直角に内側に
向けて複数の第２オリフィス孔６・６・・・を穿つ。消
火ノズル本体１の先端部、即ち、オリソイ孔６・６・・
・の下方に、第２オリフィス孔６・６・・・と同数の拡
散棒７・７・・・を、消火ノズル本体２の軸芯心と直角
方向に放射状に取付け、当該拡散棒７・７・・・の軸芯
は、第２オリフィス孔６・６・・・の中心線８上にある
ように配置する、即ち、ノズル本体の平面視で拡１１・
７・・・の軸芯を第２オリフィス孔の軸芯延長線と一致
させる。拡散棒７・７・・・の基部９には、内ねじを加
工し、消火ノズル本体１の先端部のねじ１０にねじ込ん
で固定する。Referring to FIGS. 1 to 3, a Taber thread 2 is formed at the inlet of the fire extinguishing nozzle body 1 so that a fire extinguishing equipment piping 20 can be connected thereto. The inside on the side closer to the inlet is formed into a cylindrical surface 3, and a plurality of first orifice holes 4, 4, . . . are bored from the outside perpendicular to the cylindrical surface 3. The interior on the side far from the inlet is formed into a conical surface 5, and a plurality of second orifice holes 6, 6, . . . are bored from the outside inward at right angles to the conical surface 5. The tip of the fire extinguishing nozzle body 1, that is, the orifice holes 6, 6...
・Attach the same number of diffusion rods 7, 7, etc. as the second orifice holes 6, 6, etc. below radially in a direction perpendicular to the axis of the fire extinguishing nozzle body 2, and ... are arranged so that their axes lie on the center line 8 of the second orifice holes 6.
The axis of 7... is made to coincide with the axis extension line of the second orifice hole. The bases 9 of the diffusion rods 7, 7, . . . are machined with internal threads, and are screwed into the screws 10 at the tips of the fire extinguishing nozzle body 1 to be fixed.
なお、第１図において、θは相対するそれぞれの第２オ
リフィス孔６の中心線と拡散棒７の軸芯のなす角度（ノ
ズル本体の側面視、正面視で拡散棒７の軸芯と第２オリ
フィス孔の軸芯延長線との交差角）である。In FIG. 1, θ is the angle between the center line of each opposing second orifice hole 6 and the axis of the diffusion rod 7 (the angle between the axis of the diffusion rod 7 and the second axis in the side view and front view of the nozzle body). The intersection angle with the axial extension line of the orifice hole).
次に、粉末消火剤の放射とその分布について説明する。Next, the radiation of powder extinguishing agent and its distribution will be explained.
粉末消火剤は、１０ ｋｇ ／ ０ｍ２前後の圧力を有
する窒素ガス（Ｎ２ガス）と混合し、流動しながら、気
体・固体混相流の状態で消火設備配管２０内を流れてき
て、消火ノズル本体１に達し、第１オリフィス孔４・４
および第２オリフィス孔６・６・・・に至ってＮ２ガス
とともに大気中に噴出する。以下、第１オリフィス孔４
・４・・・の場合と第２オリフィス孔６・６・・・の場
合に分けて説明する。The powder extinguishing agent is mixed with nitrogen gas (N2 gas) having a pressure of around 10 kg/0 m2, flows through the fire extinguishing equipment piping 20 in a gas-solid multiphase flow state, and enters the fire extinguishing nozzle body 1. reaches the first orifice hole 4.
Then, it reaches the second orifice holes 6, 6, and is ejected into the atmosphere together with N2 gas. Below, the first orifice hole 4
The case of ・4... and the case of second orifice hole 6, 6... will be explained separately.
第１オリフィス孔４・４・・・から噴出した粉末消火剤
は、比較的狭い角度の範囲で放射されるが、その状態を
第４Ａ図及び第４Ｂ図に示す。粉末消火剤は１０μｍ〜
１００μｍの大きさの極めて微細な固体であるため、消
火ノズルから離れるにしたがって噴出時の勢を失って、
第４Ａ図の側面図（正面図も同じ）に示すように、少し
ずつ沈降するパターンとなり、一方、平面的には、第４
Ｂ図のように完全な対象型となる。The dry powder extinguishing agent ejected from the first orifice holes 4, 4, . Powder fire extinguisher is 10 μm ~
Since it is an extremely fine solid with a size of 100 μm, it loses its ejection force as it moves away from the extinguishing nozzle.
As shown in the side view of Figure 4A (the same goes for the front view), the pattern is that it sinks little by little;
It becomes a complete object type as shown in Figure B.
次に、第２オリフィス孔６・６・・・から噴出する粉末
消火剤の場合も、ものそのままであれば、第５図のよう
な放射パターンとなるべきところを、第２オリフィス孔
６・６・・・のすぐ近くに位置する拡散棒７・７・・・
のため、広く拡散することになる。Next, in the case of the dry powder extinguishing agent that is ejected from the second orifice holes 6, 6, etc., if it is as it is, the radiation pattern that should be shown in Fig. 5 will be changed to the second orifice holes 6, 6. Diffusion rod 7, 7, located very close to...
Therefore, it will spread widely.
即ち、第２オリフィス孔６・６・・・から噴出したＮ２
ガスは、第７Ａ図に示すように、拡散棒７・７・・・に
よりその気流に乱れが生じ、その結果、粉末消火剤は上
述のように、気流の影響を受けやすい極めて微細な固体
であるため、第７Ｂ図に示すように、はね返り・粉末消
火剤同志の相互干渉・回り込みなど、広範囲に拡散する
状態となる。なお、この気流の影響の度合いは、第２オ
リフィス孔６の中心１ｓ８が拡散棒７に対して角度θを
なすため、第２オリフィス孔６に近いほど著しい。その
結果として、消火ノズルの軸芯、即ち空間中心付近での
、粉末消火剤の拡散の度合いが高くなり、粉末消火剤の
いわゆるｒ中抜は現象」が無くなるのである。この状態
を第６図に示す。That is, N2 ejected from the second orifice holes 6, 6...
As shown in Fig. 7A, the airflow of the gas is disturbed by the diffusion rods 7, 7, etc., and as a result, the powder extinguishing agent is an extremely fine solid that is easily affected by the airflow, as described above. As a result, as shown in FIG. 7B, the extinguishing powder spreads over a wide range due to splashing, mutual interference and wraparound of the extinguishing powder. Note that, since the center 1s8 of the second orifice hole 6 forms an angle θ with respect to the diffusion rod 7, the degree of influence of this airflow becomes more significant as it approaches the second orifice hole 6. As a result, the degree of diffusion of the powder extinguishing agent near the axis of the fire extinguishing nozzle, that is, the center of the space, increases, and the so-called hollowing out phenomenon of the powder extinguishing agent disappears. This state is shown in FIG.
従って、第１図の本願実施例の消火ノズルの全空間放射
パターンは、第４Ａ図、第４Ｂ図及び第６図を総合した
ものとなることは明らかで、第８図に示すように、本発
明の消火ノズルを使用すると、消火対象空間を完全に粉
末消火剤でカバーすることができるのである。Therefore, it is clear that the total spatial radiation pattern of the fire extinguishing nozzle of the embodiment of the present invention shown in FIG. 1 is a combination of FIGS. 4A, 4B, and 6, and as shown in By using the fire extinguishing nozzle of the invention, the space to be extinguished can be completely covered with dry powder extinguishing agent.
第９図は、本発明の他の実施例を示し、消火ノズル本体
１の先端を４角柱、６角柱等に形成し、基部９の一部を
これに対応する型の４角穴、６角穴に加工し、はめ合わ
せた後消火ノズル本体１の先端のねじ穴１１に小ねじ１
２により固定する。FIG. 9 shows another embodiment of the present invention, in which the tip of the fire extinguishing nozzle body 1 is formed into a square prism, hexagonal prism, etc., and a part of the base 9 is formed into a corresponding type of square hole, hexagonal prism, etc. After drilling the holes and fitting them together, insert the small screw 1 into the screw hole 11 at the tip of the fire extinguishing nozzle body 1.
Fix by 2.
かくすることにより、消火ノズル本体ｌと基部９を組合
せる時、第２オリフィス孔６・６・・・の中心線と拡散
棒７・７・・・の軸芯とを一致させる作業が省略可能な
構造となる。なお、拡散棒７・７・・・は、上記の実施
例では断面円形としたが、第１０図の断面図に示すよう
に、十分な気流の乱れが生ずるものであれば、角形断面
、楕円形状その他適当な形状のものでも本願発明の目的
を達成できることは勿論である。By doing this, when assembling the fire extinguishing nozzle body 1 and the base 9, it is possible to omit the work of aligning the center lines of the second orifice holes 6, 6, and the axes of the diffusion rods 7, 7, and so on. It becomes a structure. In the above embodiment, the diffusion rods 7, 7, etc. have a circular cross section, but as shown in the cross-sectional view of FIG. Of course, the object of the present invention can also be achieved with other suitable shapes.
○効果
本願発明は、ノズル本体の内面を、複数の第１オリフィ
ス孔を有する入口寄りの円筒面と、複数の第２オリフィ
ス孔を有する先端寄りの円錐面とで構成し、第２オリフ
ィス孔の下方に位置するノズル本体の先端部に、円錐面
の複数の第２オリフィス孔の軸芯延長線と交差するよう
に位置させて）、複数の拡散棒を放射状に突出させたか
ら、消火対象区画の天井直下及びそれより下方の水平面
を、消火ノズル本体の入口に近い側の円筒面の第１オリ
フィス孔から放射される粉末消火剤でカバーし、斜め下
方の広い空間範囲を、消火ノズルの円錐面の第２オリフ
ィス孔から放射される粉末消火剤が、角度θで拡散棒に
衝突して十分に拡散することでカバーする。従って、全
域放出方式の粉末消火設備において、消火対象区画の全
域に均一に消火剤を散布し、粉末消火剤を効果的に使用
して所定の空間内全域を確実に消火することができる。○Effects In the present invention, the inner surface of the nozzle body is composed of a cylindrical surface closer to the inlet having a plurality of first orifices, and a conical surface closer to the tip having a plurality of second orifices. A plurality of diffusion rods were protruded radially from the tip of the nozzle body located below, so as to intersect with the axial extension of the plurality of second orifice holes in the conical surface. The horizontal plane directly below the ceiling and below it is covered with powder extinguishing agent emitted from the first orifice hole of the cylindrical surface on the side near the entrance of the extinguishing nozzle body, and the wide spatial range diagonally downward is covered by the conical surface of the extinguishing nozzle. The powder fire extinguishing agent emitted from the second orifice hole collides with the diffusion rod at an angle θ and is sufficiently diffused to cover the area. Therefore, in the dry powder fire extinguishing equipment of the area discharge type, it is possible to uniformly spread the fire extinguishing agent over the entire area of the section to be extinguished, and to effectively use the powder fire extinguishing agent to reliably extinguish the entire area in a predetermined space.
第１図は本発明の実施例を示す消火ノズルの縦断面図、
第２図は同じく側面図、第３図は左半分を第１図のＡ−
Ａ切断線で断面して示す部分底面図である。
第４Ａ図および第４Ｂ図は第１オリフィス孔からの粉末
消火剤の放射パターンを示し、第４Ａ図は側面図（正面
図も同じ）、第４Ｂ図は平面図である。
第５図および第６図は第２オリフィス孔からの粉末消火
剤の拡散状態の説明図で、第５図は拡散棒が存在しない
場合の第２オリフィス孔からの粉末消火剤の放射パター
ンを示し、第６図は拡散棒が存在する場合の放射パター
ンを示す。第７Ａ図および第７Ｂ図は拡散棒の作用の説
明図で、第７Ａ図は拡散棒による気流の乱れを示し、第
７Ｂ図は気流の乱れによる粉末消火剤の跳ね返り、相互
干渉等を示す。
第８図は第１オリフィス孔および第２オリフィス孔の両
方の放射パターンを合成した粉末消火剤の全空間放射パ
ターンを示す側面図（正面図も同じ）平面図である。
第９図は本発明の第２実施例を示す消火ノズルの第１図
同様の縦断面図、第１０図は第９図のＢ−Ｂ切断線で断
面して示す縦断面図である。
第１１図および第１２図は公知の消火ノズルを示し、第
１１図は第１図同様の縦断面図、第１２図は第８図同様
の放射パターンを示す平面図である。
１・・・・・・・・・消火ノズル本体
３・・・・・・・・・円筒面
４・・・・・・・・・第１オリフィス孔５・・・・・・
・・・円錐面
６・・・・・・・・・第２オリフィス孔７・・・・・・
・・・拡散棒FIG. 1 is a longitudinal sectional view of a fire extinguishing nozzle showing an embodiment of the present invention;
Figure 2 is a side view, and Figure 3 shows the left half of Figure 1.
FIG. 3 is a partial bottom view taken in section along section line A. FIG. 4A and 4B show the radiation pattern of the powder extinguishing agent from the first orifice hole, FIG. 4A is a side view (same as the front view), and FIG. 4B is a plan view. Figures 5 and 6 are explanatory diagrams of the diffusion state of the powder extinguishing agent from the second orifice hole, and Figure 5 shows the radiation pattern of the powder extinguishing agent from the second orifice hole when no diffusion rod is present. , FIG. 6 shows the radiation pattern in the presence of a diffuser bar. 7A and 7B are explanatory diagrams of the action of the diffusion rod. FIG. 7A shows the turbulence of the airflow by the diffusion rod, and FIG. 7B shows the splashing of powder extinguishing agent, mutual interference, etc. due to the turbulence of the airflow. FIG. 8 is a side view (the same goes for the front view) and a plan view showing the entire spatial radiation pattern of the powder extinguishing agent, which is a composite of the radiation patterns of both the first orifice hole and the second orifice hole. 9 is a longitudinal sectional view similar to FIG. 1 of a fire extinguishing nozzle showing a second embodiment of the present invention, and FIG. 10 is a longitudinal sectional view taken along the line B--B in FIG. 9. 11 and 12 show a known fire extinguishing nozzle. FIG. 11 is a longitudinal sectional view similar to FIG. 1, and FIG. 12 is a plan view showing a radiation pattern similar to FIG. 8. 1... Fire extinguishing nozzle body 3... Cylindrical surface 4... First orifice hole 5...
...Conical surface 6...Second orifice hole 7...
...diffusion stick
Claims (1)
管に連通するノズル本体の入口寄り部分の内面を円筒状
に、先端寄り部分の内面を円錐状に、それぞれ形成して
、ノズル本体の内面を円筒面と円錐面とで構成し、 円筒面の外壁から、円筒面に直角に内側に向けて複数の
第１オリフィス孔を形成し、 円錐面の外壁から、円錐面に直角に内側に向けて複数の
第２オリフィス孔を形成し、 第２オリフィス孔の下方に位置するノズル本体の先端部
に、円錐面に形成した複数の前記第２オリフィス孔の軸
芯延長線と交差するように位置させて、複数の拡散棒を
放射状に突出させ、 第２オリフィス孔から放射される粉末消火剤を拡散棒と
衝突させて拡散作用を生じさせることを特徴とする粉末
消化設備の消火ノズル。(1) In a fire extinguishing nozzle for dry powder fire extinguishing equipment, the inner surface of the part near the inlet of the nozzle body that communicates with the fire extinguishing equipment piping is formed into a cylindrical shape, and the inner surface of the part near the tip is formed into a conical shape. Consisting of a cylindrical surface and a conical surface, a plurality of first orifice holes are formed from the outer wall of the cylindrical surface toward the inside at right angles to the cylindrical surface, and from the outer wall of the conical surface toward the inside at right angles to the conical surface. A plurality of second orifice holes are formed at the tip of the nozzle body located below the second orifice holes so as to intersect with an axial extension line of the plurality of second orifice holes formed in a conical surface. A fire extinguishing nozzle for powder extinguishing equipment, characterized in that a plurality of diffusion rods protrude radially, and the dry powder extinguishing agent emitted from the second orifice collides with the diffusion rods to produce a diffusion effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16378290A JPH07108B2 (en) | 1990-06-21 | 1990-06-21 | Fire extinguishing nozzle for powder fire extinguishing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16378290A JPH07108B2 (en) | 1990-06-21 | 1990-06-21 | Fire extinguishing nozzle for powder fire extinguishing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0453574A true JPH0453574A (en) | 1992-02-21 |
| JPH07108B2 JPH07108B2 (en) | 1995-01-11 |
Family
ID=15780613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16378290A Expired - Fee Related JPH07108B2 (en) | 1990-06-21 | 1990-06-21 | Fire extinguishing nozzle for powder fire extinguishing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07108B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7631537B2 (en) | 2005-03-08 | 2009-12-15 | Panasonic Corporation | Gas sensor |
| CN102335491A (en) * | 2011-07-27 | 2012-02-01 | 江苏中瑞电保智能装备有限公司 | Pipe network type dry powder fire extinguishing system and method |
| CN102350030A (en) * | 2011-07-27 | 2012-02-15 | 江苏中瑞电保智能装备有限公司 | Composite nozzle |
| CN102406999A (en) * | 2011-07-27 | 2012-04-11 | 江苏中瑞电保智能装备有限公司 | Pipe network type divisional dry powder fire extinguishing system and method |
| CN112843568A (en) * | 2021-01-29 | 2021-05-28 | 苏州市金宇消防工程技术有限公司 | Fire-fighting spraying system |
-
1990
- 1990-06-21 JP JP16378290A patent/JPH07108B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7631537B2 (en) | 2005-03-08 | 2009-12-15 | Panasonic Corporation | Gas sensor |
| CN102335491A (en) * | 2011-07-27 | 2012-02-01 | 江苏中瑞电保智能装备有限公司 | Pipe network type dry powder fire extinguishing system and method |
| CN102350030A (en) * | 2011-07-27 | 2012-02-15 | 江苏中瑞电保智能装备有限公司 | Composite nozzle |
| CN102406999A (en) * | 2011-07-27 | 2012-04-11 | 江苏中瑞电保智能装备有限公司 | Pipe network type divisional dry powder fire extinguishing system and method |
| CN112843568A (en) * | 2021-01-29 | 2021-05-28 | 苏州市金宇消防工程技术有限公司 | Fire-fighting spraying system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07108B2 (en) | 1995-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101080255B (en) | Method for spraying medium and nuzzle | |
| KR100562727B1 (en) | Mist spray nozzle of internal mixed air | |
| AU2017290823B2 (en) | A high pressure water mist nozzle device and methods for providing indirect and direct impingement of a fire | |
| MX2015002057A (en) | Full cone air-assisted spray nozzle assembly. | |
| KR100314111B1 (en) | An air spray gun type coating device | |
| JP2917013B1 (en) | Painting gun equipment | |
| JPS60235908A (en) | Adjustable conical type atomizer | |
| KR20070024449A (en) | A liquid atomizer unit having a double nozzle system for fire extinction | |
| JPH0453574A (en) | Fire extinguishing nozzle for powdery fire extinguishing apparatus | |
| EP0667172B1 (en) | Fire extinguishing head | |
| JP3799573B2 (en) | Fire fighting head | |
| US4092003A (en) | Spray nozzle | |
| JPH088935B2 (en) | Fire extinguishing nozzle for powder fire extinguishing equipment | |
| KR100317475B1 (en) | A spray gun device | |
| US7389951B2 (en) | Misting device | |
| CN220610859U (en) | Injection structure of spray gun nozzle | |
| KR200341109Y1 (en) | Nozzle assembly for fire extinguishing | |
| JPS63119782A (en) | Fire extinguishing nozzle | |
| KR100609722B1 (en) | Multiple impingement spray nozzle | |
| JP2013017933A (en) | Coating spray gun | |
| JPH07222819A (en) | Fire-extinguishing head | |
| JP2002524222A (en) | Fire extinguishing nozzle head for jetting fire extinguishing liquid | |
| JP3412088B2 (en) | Painting gun equipment | |
| JPH02107363A (en) | Air stream atomization type spray nozzle | |
| JP3422625B2 (en) | Rectifying structure of low pressure spray gun |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |