JP2006329458A

JP2006329458A - Gasoline fusing cutter

Info

Publication number: JP2006329458A
Application number: JP2005150155A
Authority: JP
Inventors: Yoshinari Nakagawa; 佳成仲川
Original assignee: YUTANI KOGYO KK
Current assignee: YUTANI KOGYO KK
Priority date: 2005-05-23
Filing date: 2005-05-23
Publication date: 2006-12-07

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gasoline fusing cutter capable of keeping a good combustion state by improving uniformity in discharging a mixture of gasoline and oxygen, and reducing costs of spare parts. <P>SOLUTION: This gasoline fusing cutter has an absorbing portion 1 for absorbing gasoline by oxygen and preparing a mist-like mixture, an oxygen nozzle portion 21, an oxygen passage 22a, a spline-shaped mixture releasing portion 3, a mixture passage 42, six passage holes 52 uniformly formed in the circumferential direction with clearances, a spatial portion 61 provided with the passage holes, a receiving face 7 against which the mixture flowing out from the passage holes 52 are collided to be dispersed, a nozzle hole 63 formed on a part of a circumferential width 54 of a bottom surface 61a, and a threaded cylinder 8 to which the nozzle portion 21 having the receiving face 7 is attached and detached, or the like, and is composed of the receiving face 7, the nozzle hole 63 formed in the direction to be kept into contact with a clearance portion, and the threaded cylinder 8. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ガソリンを燃料として金属板等の対象物を溶断するように形成されたガソリン溶断機に関する。 The present invention relates to a gasoline fusing machine formed by fusing an object such as a metal plate with gasoline as fuel.

ガソリン溶断機としては、酸素供給チューブ８、ガソリン供給チューブ７、切断用酸素チューブ１１、予熱用酸素チューブ１６、酸素用微細チューブ４、ガソリン用微細チューブ５、等を備えていて、酸素でガソリンを吸引して切断用酸素を加えてガソリンを燃焼させて対象物を切断するようにしたアトマイザ及び切断トーチが知られている。（特許文献１参照）
特許公表2002-540372 号公報（図 3〜5 及び関連説明） The gasoline fusing machine includes an oxygen supply tube 8, a gasoline supply tube 7, a cutting oxygen tube 11, a preheating oxygen tube 16, a fine oxygen tube 4, a fine gasoline tube 5, and the like. 2. Description of the Related Art An atomizer and a cutting torch are known in which suction is performed and cutting oxygen is added to burn gasoline to cut an object. (See Patent Document 1)
Patent Publication 2002-540372 (Figs. 3-5 and related explanation)

このガソリン溶断機では、混合物が一ヶ所の混合ノズルから空間部に放出され、この空間部から例えば更に円周上に６個程度の複数個設けられる混合物分散用の通路に入れられる。しかし、このときには、混合物は不可避的に偏流し、複数個の通路に均一的な流量ではなくかなり偏った流量配分で入ることになる。このような状態で通路に入った混合物が通路から出ると、切断用酸素管の外周の断面リング状の供給路に入り、通路から出た方向に進むと共に断面方向にもある程度流量配分で均一化されつつ先端の切断ノズル部に進む。しかし、酸素流によって吸引されたガソリンは、ミスト状で液体であるガソリンの微小粒も含むため、比重が大きく直進性がある。そのため、供給路で流れが均一化されるとしても、混合物は円周方向位置によってかなり不均一な流量で切断ノズル部に入り、その状態で放出されることになる。その結果、ガソリンの燃焼状態に偏りが生じ、対象物の切断性を低下させることになる。 In this gasoline fusing machine, the mixture is discharged from one mixing nozzle into a space portion, and is put into a mixture dispersion passage provided, for example, by a plurality of about six on the circumference from this space portion. However, at this time, the mixture inevitably drifts and enters the plurality of passages with a rather uneven flow distribution rather than a uniform flow. When the mixture that has entered the passage in this state exits the passage, it enters the cross-section ring-shaped supply passage on the outer periphery of the cutting oxygen pipe, proceeds in the direction exiting the passage, and is evenly distributed to the cross-section direction to some extent. While proceeding, the process proceeds to the cutting nozzle at the tip. However, gasoline sucked in by an oxygen stream also includes gasoline mist that is mist and liquid, and thus has a large specific gravity and is straight. Therefore, even if the flow is made uniform in the supply path, the mixture enters the cutting nozzle portion at a considerably non-uniform flow rate depending on the circumferential position, and is discharged in that state. As a result, the gasoline combustion state is biased, and the cutting performance of the object is reduced.

一方、切断用及びガソリン吸引用の酸素は、通常高圧ボンベから減圧されて供給されるため、減圧時に低温になり、その後周辺から吸熱する。このとき、流量の少ないガソリン吸引用酸素は相対的に周辺からの吸熱作用が大きくなるため、周辺の温度に近い温度になるが、流量の多い切断用の酸素は、かなり周辺温度より下がった低温状態になっている。その結果、従来技術のガソリン溶断機のように、温度の回復している混合物を、溶断用酸素が流れていて温度の下がっている酸素供給路の外面に直接当てるように空間部に流入させると、混合物中の気化したガソリンが冷やされて液滴になり、粒が大型化したり供給路の外面に付着したり不均一な流れ状態を促進させたり燃焼性を低下させる等の不具合を発生させる可能性がある。 On the other hand, oxygen for cutting and gasoline suction is usually supplied after being decompressed from a high-pressure cylinder, so that it becomes low temperature during decompression, and then absorbs heat from the periphery. At this time, oxygen for gasoline suction with a low flow rate has a relatively high endothermic effect from the surroundings, so the temperature is close to the surrounding temperature, but cutting oxygen with a high flow rate is a low temperature that is considerably lower than the ambient temperature. It is in a state. As a result, like a conventional gasoline fusing machine, when the temperature-recovered mixture is allowed to flow directly into the outer space of the oxygen supply path where the fusing oxygen is flowing and the temperature is falling, , Vaporized gasoline in the mixture is cooled to become droplets, which can cause problems such as enlargement of particles, adhesion to the outer surface of the supply path, promotion of uneven flow conditions, and deterioration of combustibility There is sex.

又、混合物放出部の先端は切断時の火炎の熱影響等により、通常多列のスプライン状に形成される溝の形状が変形したり詰まったり、その近傍の部分を含めて部分的に溶解する等の種々の損傷を受け易い。従って、この部分を含む部品は耐久性が不十分になり交換されることが必要になる。このとき、従来技術のアトマイザのように、切断用酸素の通路部分の全体が一体化されていると、交換部品のコストが高くなる。 Also, the tip of the mixture discharge part is deformed or clogged due to the heat effect of the flame at the time of cutting or the like, and the shape of the grooves formed in a multi-line spline shape is deformed or clogged, and partly melts including the vicinity. It is easy to receive various damages. Therefore, the parts including this part have insufficient durability and need to be replaced. At this time, if the entire cutting oxygen passage portion is integrated as in the prior art atomizer, the cost of the replacement part increases.

そこで本発明は、従来技術における上記問題を解決し、混合物放出部から放出される混合物の放出量の均一性を向上させてガソリンの燃焼状態を良くすることを課題とし、又、混合物の低温化を防止してガソリンの燃焼性を向上させたり交換部品のコストを低減させたガソリン溶断機を提供することを課題とする。 Therefore, the present invention aims to solve the above-mentioned problems in the prior art, improve the uniformity of the discharge amount of the mixture discharged from the mixture discharge part and improve the combustion state of gasoline, and reduce the temperature of the mixture. It is an object of the present invention to provide a gasoline fusing machine that prevents combustion and improves gasoline combustibility and reduces the cost of replacement parts.

本発明は上記課題を解決するために、請求項１の発明は、ガソリンをガソリン吸引用酸素の高速流で吸引して前記ガソリン吸引用酸素と前記ガソリンとの混合物にするように形成された吸引部と、先端に酸素ノズル部分と該酸素ノズル部分に接続し中心部分に直線状の酸素通路及び外側に外側円筒面を持つ円筒状部分とを備えていて溶断用酸素を前記酸素通路を通過させて前記酸素ノズル部分から放出させるように形成された溶断用酸素供給部と、前記酸素ノズル部分の周囲から前記混合物を放出させるように形成された混合物放出部と、内側円筒面を備えていて前記外側円筒面との間で前記混合物が通過して前記混合物放出部に送られるように混合物通路部分を形成する混合物通過部と、前記混合物通過部分に前記混合物を流出させるように前記中心部分の外側の円周方向に均一状に配設された複数の通路穴を備えた穴形成部と、前記通路穴の混合物入口が開口した空間部を備えていて前記吸引部と導通する混合物中間通過部と、を備えていて、前記ガソリンを燃料として対象物を溶断可能なように形成されたガソリン溶断機において、
前記混合物通路部分に前記複数の通路穴から流出した混合物が当たって分散するように形成された混合物当て部を有することを特徴とする。 In order to solve the above-mentioned problems, the present invention provides a suction system configured to suck gasoline into a mixture of the gasoline suction oxygen and the gasoline by sucking gasoline with a high-speed flow of gasoline suction oxygen. And an oxygen nozzle portion at the tip, a straight oxygen passage connected to the oxygen nozzle portion, and a cylindrical portion having an outer cylindrical surface on the outer side to allow fusing oxygen to pass through the oxygen passage. A fusing oxygen supply part formed so as to be discharged from the oxygen nozzle part, a mixture discharge part formed so as to discharge the mixture from the periphery of the oxygen nozzle part, and an inner cylindrical surface. A mixture passage portion that forms a mixture passage portion so that the mixture passes between the outer cylindrical surface and is sent to the mixture discharge portion; and the mixture is caused to flow out to the mixture passage portion. A hole forming portion having a plurality of passage holes arranged uniformly in the circumferential direction outside the center portion, and a space portion in which the mixture inlet of the passage hole is opened, is electrically connected to the suction portion. In a gasoline fusing machine comprising a mixture intermediate passage part, and formed so as to be capable of fusing an object using the gasoline as a fuel,
It has a mixture contact part formed so that the mixture which flowed out of these passage holes may hit and be distributed to the mixture passage part.

請求項２の発明は、ガソリンをガソリン吸引用酸素の高速流で吸引して前記ガソリン吸引用酸素と前記ガソリンとの混合物にするように形成された吸引部と、先端に酸素ノズル部分と該酸素ノズル部分に接続し中心部分に直線状の酸素通路及び外側に外側円筒面を持つ円筒状部分とを備えていて溶断用酸素を前記酸素通路を通過させて前記酸素ノズル部分から放出させるように形成された溶断用酸素供給部と、前記酸素ノズル部分の周囲から前記混合物を放出させるように形成された混合物放出部と、内側円筒面を備えていて前記外側円筒面との間で前記混合物が通過して前記混合物放出部に送られるように混合物通路部分を形成する混合物通過部と、前記混合物通過部分に前記混合物を流出させるように前記中心部分の外側の円周方向に均一状に配設された複数の通路穴を備えた穴形成部と、前記通路穴の混合物入口が開口した空間部を備えていて前記吸引部と導通する混合物中間通過部と、を備えていて、前記ガソリンを燃料として対象物を溶断可能なように形成されたガソリン溶断機において、
前記混合物中間通過部は前記吸引部で形成された混合物が広がって流れるように形成された拡大通路部と該拡大通路部より狭くなった縮小通路部とを有し、該縮小通路部は前記混合物入口の前記外側円筒面側の端を通る接線円と前記外側円筒面との間の円周幅の部分を含む方向に向くように形成されていることを特徴とする。 According to a second aspect of the present invention, there is provided a suction portion configured to suck gasoline with a high-speed flow of gasoline suction oxygen into a mixture of the gasoline suction oxygen and the gasoline, an oxygen nozzle portion at the tip, and the oxygen It is connected to the nozzle portion and has a linear oxygen passage in the center portion and a cylindrical portion having an outer cylindrical surface on the outer side, and is formed so that oxygen for fusing passes through the oxygen passage and is released from the oxygen nozzle portion. The fusing oxygen supply unit, the mixture discharge unit formed to discharge the mixture from the periphery of the oxygen nozzle portion, and the inner cylindrical surface, and the mixture passes between the outer cylindrical surface. A mixture passage portion that forms a mixture passage portion to be sent to the mixture discharge portion, and a circumferential direction outside the center portion so that the mixture flows out to the mixture passage portion. A hole forming portion provided with a plurality of passage holes arranged in a shape, and a mixture intermediate passage portion provided with a space portion where a mixture inlet of the passage hole is opened and electrically connected to the suction portion, In the gasoline fusing machine formed so that the target can be melted using the gasoline as a fuel,
The mixture intermediate passage part has an enlarged passage part formed so that the mixture formed by the suction part spreads and a reduced passage part narrower than the enlarged passage part, and the reduced passage part is formed of the mixture. It is formed so as to face a direction including a circumferential width portion between a tangent circle passing through an end of the inlet on the outer cylindrical surface side and the outer cylindrical surface.

請求項３の発明は、請求項１の発明に加えて、前記混合物中間通過部は前記吸引部で形成された混合物が広がって流れるように形成された拡大通路部と該拡大通路部より狭くなった縮小通路部とを有し、該縮小通路部は前記混合物入口の前記外側円筒面側の端を通る接線円と前記外側円筒面との間の円周幅の部分を含む方向に向くように形成されていることを特徴とする。 According to a third aspect of the present invention, in addition to the first aspect of the invention, the intermediate passage portion of the mixture is narrower than the enlarged passage portion formed so that the mixture formed by the suction portion spreads and flows. A reduced passage portion, and the reduced passage portion is directed to a direction including a circumferential width portion between a tangential circle passing through an end of the mixture inlet on the outer cylindrical surface side and the outer cylindrical surface. It is formed.

請求項４の発明は、請求項１又は３の発明において、前記混合物当て部は内側にネジが切られた円筒状部材の笠状の頂部として形成され前記外側円筒面に付けられていて、前記酸素ノズル部分は前記ネジに着脱可能なように形成されていることを特徴とする。 According to a fourth aspect of the present invention, in the first or third aspect of the present invention, the mixture contact portion is formed as a cap-shaped top portion of a cylindrical member threaded on the inside, and is attached to the outer cylindrical surface, The oxygen nozzle portion is formed so as to be detachable from the screw.

以上の如く本発明によれば、請求項１の発明においては、ガソリン溶断機が、所定の構成を備えた吸引部と溶断用酸素供給部と混合物放出部と混合物通過部と複数の通路穴と混合物中間通過部とを備え、ガソリンを燃料として対象物を溶断可能にするように形成されているので、金属板等の対象物を溶断するときに、溶断用の酸素を酸素ノズル部分から放出させ、その流れエネルギーで対象物の溶解された部分を飛ばして溶断箇所の溶断を促進させ、又、ガソリンを燃焼させるための十分な酸素を供給すると共に、ガソリン吸引用酸素を供給し、その高速流でガソリンを吸引し、酸素と気化したガソリンと微粒のガソリン液とのミスト状の混合物にし、これを混合物中間通過部の空間部に送り、この部分で円周方向に間隔を空けて均一状に配設された複数の通路穴から混合物通過部に送り、最終的に溶断用酸素を放出するノズル部分の周囲から混合物を放出させ、放出させた溶断用酸素も含めてガソリンに十分な酸素を供給してこれを完全に燃焼させ、その熱によって対象物を予熱すると共に溶解・溶断させることができる。 As described above, according to the present invention, in the first aspect of the invention, the gasoline fusing machine includes a suction part having a predetermined configuration, a fusing oxygen supply part, a mixture discharge part, a mixture passage part, and a plurality of passage holes. It has a mixture intermediate passage part and is formed so that the object can be melted using gasoline as fuel, so that when cutting the object such as a metal plate, oxygen for melting is released from the oxygen nozzle part. The flow energy is used to fly the melted part of the object to promote fusing at the fusing point. Also, sufficient oxygen is supplied to burn gasoline, and oxygen for sucking gasoline is supplied. The gasoline is sucked in and made into a mist-like mixture of oxygen, vaporized gasoline and fine gasoline liquid, and this is sent to the space part of the intermediate passage part of the mixture. Arrangement The mixture is sent from the plurality of passage holes to the mixture passage, and finally the mixture is released from the periphery of the nozzle part that releases the fusing oxygen, and sufficient oxygen is supplied to the gasoline including the released fusing oxygen. This can be completely burned, and the object can be preheated and melted or blown by the heat.

そしてこの場合に、混合物通路部分に複数の通路穴から流出した混合物が当たって分散するように形成された混合物当て部を設けているので、混合物通路部分での混合物の流れ状態の均一化を図ることができる。 In this case, since the mixture contact portion formed so that the mixture flowing out from the plurality of passage holes hits and disperses the mixture passage portion is provided, the flow state of the mixture in the mixture passage portion is made uniform. be able to.

即ち、通路穴から流出した混合物が混合物当て部に当たると、混合物はその方向には進めないので、方向転換して進むことになり、混合物中にガソリンミストのように気体でなく比重の格段に大きい液体があっても、進路方向から外れて円周方向の速度成分も持つように流れる。その結果、複数の穴で不可避的に生ずる穴通過流量のアンバランスにより、混合物当て部に当たる混合物の流量が偏ったときに、混合物流量が多くその円周方向の速度成分が大きくその方向の流量の多い方から、流量が少なく円周方向への流量の少ない方向に混合物の流量が充足され、円周方向に全体的に流量の均一化が進む。そして、このような作用をなす混合物当て部が混合物通過部分で混合物を通過させる中間位置にあるので、結局、混合物は円周方向に均一流量化されつつ混合物通過部を通過し、混合物放出部に均一化された流量で到達し、その状態で放出され、燃焼状態の向上等が図られることになる。 That is, when the mixture that has flowed out of the passage hole hits the mixture contact portion, the mixture does not advance in that direction, so the direction is changed, and the mixture has a remarkably large specific gravity rather than a gas like gasoline mist. Even if there is liquid, it flows out of the course direction so as to have a circumferential velocity component. As a result, when the flow rate of the mixture impinging on the mixture contact portion is biased due to an imbalance in the flow rate through the holes inevitably generated in a plurality of holes, the flow rate component in the circumferential direction is large and the flow rate in that direction From the larger side, the flow rate of the mixture is satisfied in the direction where the flow rate is small and the flow rate in the circumferential direction is small, and the flow rate is made uniform overall in the circumferential direction. And since the mixture contact part which performs such an action is in an intermediate position where the mixture passes through the mixture passage part, the mixture passes through the mixture passage part while being uniformly flowed in the circumferential direction, and reaches the mixture discharge part. It arrives at a uniform flow rate, is released in that state, and the combustion state is improved.

請求項２の発明においては、上記のように採択結合されて作用効果を発生させるように所定の構成を備えた吸引部と溶断用酸素供給部と混合物放出部と混合物通過部と複数の通路穴と混合物中間通過部とを備えていてガソリンを燃料として対象物を溶断するように形成された溶断機の混合物中間通過部が、吸引部で生成した混合物が広がって流れるように形成された拡大通路部とこれより狭くなった縮小通路部とを有し、縮小通路部が混合物入口の外側円筒面側の端を通る接線円と外側円筒面との間の円周幅部分を含む方向に向くように形成されているので、混合物の温度低下を防止することができる。 In the second aspect of the present invention, the suction portion, the fusing oxygen supply portion, the mixture discharge portion, the mixture passage portion, and the plurality of passage holes having a predetermined structure so as to be combined as described above to generate the operational effect. And a mixture intermediate passage part, and the mixture intermediate passage part of the fusing machine formed so as to melt the target with gasoline as fuel, the enlarged passage formed so that the mixture generated in the suction part spreads and flows And a reduced passage portion narrower than this, and the reduced passage portion is directed to a direction including a circumferential width portion between the tangential circle passing through the end of the mixture inlet on the outer cylindrical surface side and the outer cylindrical surface Therefore, the temperature drop of the mixture can be prevented.

即ち、縮小通路部が円周幅部分を含む方向に向いていると共に、縮小通路部では混合物が高速で流れるので、縮小通路部を出た混合物は直進して主として円周幅の部分に当たることになる。そしてこの円周幅部分が、中心部分に酸素通路が形成されこの中を低温の酸素が流れて低温傾向になる溶断用酸素供給部の外側円周面から外に張り出した位置になっていて、この部分に常時混合物が当たっていてこの部分の温度が混合物に近い温度になっているため、混合物の低温化が防止されることになる。 That is, the reduced passage portion is oriented in the direction including the circumferential width portion, and the mixture flows at a high speed in the reduced passage portion, so that the mixture exiting the reduced passage portion goes straight and mainly hits the circumferential width portion. Become. And this circumferential width part is in a position that protrudes outside from the outer circumferential surface of the oxygen supply part for fusing, in which an oxygen passage is formed in the central part and low temperature oxygen flows through this oxygen supply part, Since the mixture always hits this part and the temperature of this part is close to the mixture, the temperature of the mixture is prevented from being lowered.

その結果、気化したガソリンの再液化、ガソリンミストの粒の大型化、その供給路外面への付着、不均一な流れ状態の促進、燃焼性の低下、等の諸不具合を発生させる可能性を防止することができる。 As a result, re-liquefaction of vaporized gasoline, enlargement of particles of gasoline mist, adhesion to the outer surface of the supply path, promotion of uneven flow conditions, deterioration of combustibility, etc. are prevented. can do.

請求項３の発明においては、請求項１及び２の両構成を採択結合させたので、それぞれの作用効果を総合的に発生させることができる。 In the invention of claim 3, since both the structures of claims 1 and 2 are adopted and combined, the respective functions and effects can be generated comprehensively.

請求項４の発明においては、上記に加えて、混合物当て部が内側にネジの切られた円筒状部材の笠状の頂部として形成され外側円筒面に付けられていて、酸素ノズル部分はネジに着脱可能なように形成されているので、交換部品を小形化してそのコストを低減させることができる。 In the invention of claim 4, in addition to the above, the mixture contact portion is formed as a cap-shaped top portion of a cylindrical member threaded inside and attached to the outer cylindrical surface, and the oxygen nozzle portion is attached to the screw. Since it is formed so as to be detachable, the replacement part can be miniaturized and its cost can be reduced.

即ち、酸素ノズル部分の周囲は混合物放出部になり、この部分を含む先端部分は、切断時の火炎の熱影響等を受けるので、混合物放出部として通常使用される多列スプラインの溝の形状が変形したり詰まったり、その近傍の部分を含めて部分的に溶解損耗する等の種々の損傷を受け易く、この部分を含む部品は耐久性が不十分になり交換されることが必要になるが、請求項４の発明によれば、全体的には損傷や消耗されることの少ない溶断用酸素供給部の全体を交換する必要がなくなるで、交換部品を低コストのものにすることができる。 That is, the periphery of the oxygen nozzle part becomes a mixture discharge part, and the tip part including this part is affected by the heat of the flame at the time of cutting, etc. Therefore, the shape of the groove of the multi-row spline usually used as the mixture discharge part is It is susceptible to various damages, such as deformation, clogging, and partial dissolution and wear, including parts in the vicinity, and parts including this part have insufficient durability and need to be replaced. According to the invention of claim 4, it is not necessary to replace the entire fusing oxygen supply section which is less likely to be damaged or consumed as a whole, and the replacement parts can be made at low cost.

図１及び図２は、本発明を適用したガソリン溶断機の全体構成及び先部分の拡大形状を示す。これらの図及び図番を記載して他の図を参照しつつ説明する。 FIG.1 and FIG.2 shows the whole structure of the gasoline fusing machine to which this invention is applied, and the enlarged shape of the front part. These figures and figure numbers will be described and described with reference to other figures.

本例のガソリン溶断機は、ガソリンをガソリン吸引用酸素の高速流で吸引してガソリン吸引用酸素とガソリンとの混合物にするように形成された吸引部１、先端に酸素ノズル部分２１とこの部分に接続し中心線Ｃの回りの中心部分に直線状の酸素通路２２ａ及び外側に外側円筒面である外筒面２２ｂを持つ円筒状部分２２とを備えていて溶断用酸素を酸素通路２２ａを通過させて酸素ノズル部分２１から放出させるように形成された溶断用酸素供給部２、酸素ノズル部分２１の周囲から混合物を放出させるように形成された混合物放出部３、内側円筒面である内筒面４１を備えていて外筒面２２ｂとの間で混合物が通過して混合物放出部３に送られるように混合物通路部分である混合物通路４２を形成する混合物通過部４、混合物通路４２に混合物を流出させるように図３（ａ）にも示す如く中心部分の外側の円周方向に均一状に間隔を空けて配設された複数として本例では６個の通路穴５２を備えた穴形成部５、通路穴５２の混合物入口５２ａが底面６１ａに開口した空間部６１を備えていて吸引部１と導通する混合物中間通過部６、等を備え、ガソリンを燃料として金属板等の対象物を溶断可能なように形成されていて、混合物通路４２に６個の通路穴５２から流出した混合物が当たって分散するように形成された混合物当て部である受け面７を有する。 The gasoline fusing machine of this example has a suction part 1 formed so as to suck gasoline with a high-speed flow of gasoline suction oxygen into a mixture of gasoline suction oxygen and gasoline, and an oxygen nozzle part 21 at the tip and this part. And a cylindrical portion 22 having an outer cylindrical surface 22b which is an outer cylindrical surface on the outer side, and a fusing oxygen passing through the oxygen passage 22a. The fusing oxygen supply part 2 formed so as to be released from the oxygen nozzle part 21, the mixture discharge part 3 formed so as to release the mixture from the periphery of the oxygen nozzle part 21, and the inner cylinder surface which is an inner cylindrical surface 41, the mixture passage portion 4 and the mixture passage 42 that form a mixture passage 42 that is a mixture passage portion so that the mixture passes between the outer cylindrical surface 22b and is sent to the mixture discharge portion 3. As shown in FIG. 3 (a), in this example, six passage holes 52 are provided as a plurality arranged uniformly spaced in the circumferential direction outside the central portion so that the compound flows out. The hole forming portion 5, the mixture inlet 52 a of the passage hole 52 is provided with a space portion 61 that opens to the bottom surface 61 a, the mixture intermediate passage portion 6 that is electrically connected to the suction portion 1, etc. It has a receiving surface 7 which is formed so as to be able to melt the material and is a mixture contact portion formed so that the mixture flowing out from the six passage holes 52 hits the mixture passage 42 and is dispersed.

このガソリン溶断機は、その他の構成部分として、工場等に設置されている高圧酸素ボンベ等に接続される酸素ホース１００、逆火防止機構部１０１、酸素管１０２、溶断用酸素調整弁１０３、溶断用酸素管１０４、中にガソリンが入れられ内管２０１から容器付きコック２０２及びガソリンホース２０３を介してガソリンが吸い出されるように形成されたガソリン容器２００、ガソリンコック２０４、ガソリンパイプ及び通路２０５、吸引前ガソリン通路２０６、分岐酸素通路３００、吸引用酸素調整弁３０１、吸引用酸素通路３０２、グリップ部４００、等を備えている。符号９、１０はノズルアダプタ及び締付けナットである。ガソリン溶断機の先の部分は、穴形成部５が締め付けナット１０でノズルアダプタ９にメタルタッチで圧接するように締め付け固定されることによって組み立てられている。 This gasoline fusing machine includes, as other components, an oxygen hose 100 connected to a high-pressure oxygen cylinder or the like installed in a factory, a backfire prevention mechanism 101, an oxygen pipe 102, a fusing oxygen regulating valve 103, fusing Oxygen pipe 104, gasoline container 200, gasoline cock 204, gasoline pipe and passage 205 formed so that gasoline is put in and sucked out from inner pipe 201 via container-equipped cock 202 and gasoline hose 203, A pre-suction gasoline passage 206, a branch oxygen passage 300, a suction oxygen adjustment valve 301, a suction oxygen passage 302, a grip portion 400, and the like are provided. Reference numerals 9 and 10 denote a nozzle adapter and a tightening nut. The front portion of the gasoline fusing machine is assembled by tightening and fixing the hole forming portion 5 with the tightening nut 10 so as to press-contact the nozzle adapter 9 with a metal touch.

吸引部１は、図４に示す如く、前記吸引用酸素通路３０２の酸素を高速で吹き出させるノズル１１、前記吸引前ガソリン通路２０６に明けられたガソリン入口１２、吸引路１３、混合物中間通路部６を構成する後述する拡大通路部であるディフューザ６２に通ずる混合部１４、等で構成されている。 As shown in FIG. 4, the suction unit 1 includes a nozzle 11 that blows out oxygen in the suction oxygen passage 302 at a high speed, a gasoline inlet 12 opened to the gasoline passage 206 before suction, a suction passage 13, and a mixture intermediate passage portion 6. The mixing section 14 communicates with a diffuser 62 which is an enlarged passage section to be described later.

溶断用酸素供給部２の酸素ノズル部分２１には、中心線Ｃの位置に高速で酸素を放出するように小径のノズル２１ａが形成されている。又本例では、その外周に多列スプラインが切られている。そして、混合物通過部４の先端部分の内面がスプラインの頂部に接触する円筒状に形成されていて、このスプラインが混合物放出部３になっている。 A small diameter nozzle 21 a is formed in the oxygen nozzle portion 21 of the fusing oxygen supply unit 2 so as to release oxygen at a high speed at the position of the center line C. In this example, a multi-row spline is cut on the outer periphery. And the inner surface of the front-end | tip part of the mixture passage part 4 is formed in the cylindrical shape which contacts the top part of a spline, and this spline becomes the mixture discharge | release part 3. FIG.

円筒状部分２２の外筒面２２ｂと混合物通路部４の内筒面４１との間の混合物通路４２に形成された受け面７は、本例では、内側にネジ８１が切られた円筒状部材であるネジ筒８の笠状の頂部として形成され、外筒面２２ｂを含む円筒状部分２２と一体形成され外筒面２２ｂから突出した形状に設けられている。そして、前記酸素ノズル部分２１は、酸素通路２２ａの一部分を含みネジ８１に螺合するネジ２１ｂが切られた円筒状の部材になっていて、円筒状部分２２とは別体として形成されこれにネジで着脱可能なように形成されている。符号２１ｃはネジ締め用のナット部分である。 In this example, the receiving surface 7 formed in the mixture passage 42 between the outer cylindrical surface 22b of the cylindrical portion 22 and the inner cylindrical surface 41 of the mixture passage portion 4 is a cylindrical member with a screw 81 cut inside. It is formed as a shade-like top of the screw cylinder 8, and is formed integrally with the cylindrical portion 22 including the outer cylinder surface 22b and protrudes from the outer cylinder surface 22b. The oxygen nozzle portion 21 is a cylindrical member that includes a part of the oxygen passage 22a and has a screw 21b that is screwed into the screw 81, and is formed separately from the cylindrical portion 22. It is formed to be detachable with screws. Reference numeral 21c denotes a nut portion for screw tightening.

笠状の頂部をなす受け面７は、本例では図３（ｂ）において水平断面である円筒面から角度θとして約３０°傾斜している。この傾斜角は、円周方向における混合物流れの均一化作用と抵抗体になるために生ずる抵抗の大きさとの兼ね合いから定められ、０°乃至６０°程度の範囲の適当な角度にされる。 In this example, the receiving surface 7 that forms the top of the shade shape is inclined by about 30 ° as an angle θ from the cylindrical surface having a horizontal cross section in FIG. This inclination angle is determined from the balance between the effect of homogenizing the mixture flow in the circumferential direction and the magnitude of the resistance generated to become a resistor, and is set to an appropriate angle in the range of about 0 ° to 60 °.

混合物当て部としては、上記のようにネジ筒８の笠状の頂部として形成される代わりに、図５（ａ）乃至（ｄ）に示す如く、単なる笠状部７₁、断面角形の平坦な頂部７₂、台形又は三角形断面の傾斜部７₃、７₄、等として形成されてもよい。この場合、同図（ｅ）の平面状態に示す如く、これらの部分は必ずしも円周方向に連続していなく別々の角形受け面７₅になっていてもよい。なお、この図で二点鎖線で示す円５２ｂは通路穴５２の穴方向の投影平面の状態を示す。円５２は、受け面７、７₁〜７₅の外周の範囲内に入かある程度これからはみ出す程度にされる。受け面７がネジ筒８を形成しないときには、酸素ノズル部２１と円筒状部分２２とが一体構造で簡単な形状のものになる。 The mixture abutting portion, instead of being formed as a bevel-shaped top portion of the screw cylinder 8 as described above, as shown in FIG. 5 (a) to (d), just bevel-shaped portion _71, a flat cross section square It may be formed as a top portion 7 ₂ , a trapezoidal or triangular inclined section 7 ₃ , 7 ₄ , etc. In this case, as shown in the plane state of FIG. (E), these parts may have necessarily to separate rectangular receiving surface 7 ₅ not be circumferentially continuous. In addition, the circle 52b shown with a dashed-two dotted line in this figure shows the state of the projection plane of the hole direction of the passage hole 52. FIG. Circle 52 is somewhat input or the receiving surface 7, 7 ₁ to 7 ₅ within the periphery to an extent that it sticks out from this. When the receiving surface 7 does not form the screw cylinder 8, the oxygen nozzle portion 21 and the cylindrical portion 22 are integrated and have a simple shape.

穴形成部５の通路穴５２は、混合物を混合物通路４２に均一的に流すために適当な個数設けられる。 An appropriate number of passage holes 52 of the hole forming portion 5 are provided to allow the mixture to flow uniformly into the mixture passage 42.

混合物中間通過部６は、本例では、生成した混合物が広がって流れるように形成された前記ディフューザ６２、これより狭くなった縮小通路部であるノズル穴６３、前記空間部６１、等を有する。そして、ノズル穴６３は、図３（ａ）にも示す如く、空間部６１の底面６１ａ上で、混合物入口５２ａの外筒面２２ｂ側の端を通る接線円５３と外筒面２２ｂとの間の円周幅５４の部分を含む方向に向くように形成されている。 In this example, the mixture intermediate passage portion 6 includes the diffuser 62 formed so that the generated mixture spreads and flows, the nozzle hole 63 that is a reduced passage portion narrower than the diffuser 62, the space portion 61, and the like. As shown in FIG. 3A, the nozzle hole 63 is formed between the tangential circle 53 passing through the end on the outer cylindrical surface 22b side of the mixture inlet 52a and the outer cylindrical surface 22b on the bottom surface 61a of the space 61. It is formed so as to face the direction including the circumferential width 54 portion.

即ち、ノズル穴６３を出た高速の混合物は、直接溶断用の酸素通路２２ａの周囲の面には殆ど当たることなく、ノズル穴６３の底面６１ａへの投影円である図において二点鎖線の円６３ａで示す如く、ほぼ外側面２２ｂから張り出した円周幅５４の部分に当たるようになっている。 That is, the high-speed mixture exiting the nozzle hole 63 hardly hits the surface around the oxygen passage 22a for direct fusing, and is a circle indicated by a two-dot chain line in the figure projected onto the bottom surface 61a of the nozzle hole 63. As indicated by 63a, it hits the portion of the circumferential width 54 that protrudes substantially from the outer surface 22b.

なお、本例では、図２において、締付けナット１０を回転させて穴形成部５をノズルアダプタ９に締め付けるようにしていて、そのとき穴形成部５も回転するため、円６３ａの円周方向位置が定まらず、必ずしも図３（ａ）の円６３ａが隣合った２つの混合物入口５２ａの中央位置になるとは限らず、円６３ａと混合物入口５２ａとが円周方向で同じ位置になる可能性もないではないが、そのときでも、円６３ａは混合物入口５２ａに重ならないようにされている。この場合、図３（ｂ）に示す如く、ノズル穴６３を二カ所に設けて円６３ａを二カ所にして、少なくとも一ヶ所の図では円６３ａ−１が確実に隣合った混合物入口５２a−１と５２a−２との中間位置になるようにしてもよい。 In this example, in FIG. 2, the tightening nut 10 is rotated to tighten the hole forming portion 5 to the nozzle adapter 9, and the hole forming portion 5 is also rotated at this time. The circle 63a in FIG. 3 (a) is not necessarily the center position of the two adjacent mixture inlets 52a, and the circle 63a and the mixture inlet 52a may be at the same position in the circumferential direction. Although it is not, the circle 63a is not overlapped with the mixture inlet 52a even at that time. In this case, as shown in FIG. 3 (b), the nozzle holes 63 are provided in two places and the circle 63a is provided in two places, and in at least one of the drawings, the mixture inlet 52a-1 in which the circle 63a-1 is surely adjacent to each other. And 52a-2.

以上のようなガソリン溶断機は次のように使用されてその作用効果を発揮する。 The gasoline fusing machine as described above is used as follows and exhibits its operational effects.

対象物を溶断するときには、先ず、対象物を予熱及び溶解させるために混合物を生成させて混合物放出部３から対象物に放出する。即ち、溶断用酸素調整弁１０３を閉にして酸素管１０２の酸素が分岐酸素通路３００を流れるようにし、吸引用酸素調整弁３０１を適度に開にし、図示しない高圧酸素ボンベから通常０．５MPa 程度の圧力に減圧された酸素を吸引用酸素通路３０２に流し、ノズル１１で減圧膨張させて高速で噴出させ、ガソリンの吸引路１３内を水柱で５００mm程度の負圧にし、ガソリン容器２００から配管等を経由してガソリンを吸引し、混合部１４以後の部分で吸引用酸素とガソリンとを混合物にし、ディフューザ６２で大気圧以上の圧力に回復させ、ノズル穴６３を通過させて混合物の高速流を空間部６１に噴出させて円周幅５４の部分に当て、６個の通路穴５２から流出させて今度は混合物通路４２内の受け面７に当て、更に混合物通路４２を通過させて多列スプラインになっている混合物放出部３から対象物に向かって直進するように放出させる。そして、放出された混合物に着火し、対象物を加熱して予熱すると共に、継続した熱供給によって対象物を溶解させる。 When the object is blown, first, a mixture is generated in order to preheat and dissolve the object and discharged from the mixture discharge unit 3 to the object. That is, the oxygen regulating valve 103 for fusing is closed so that oxygen in the oxygen pipe 102 flows through the branch oxygen passage 300, the oxygen regulating valve 301 for suction is appropriately opened, and a high pressure oxygen cylinder (not shown) is usually about 0.5 MPa. Oxygen reduced in pressure to flow into the suction oxygen passage 302, expanded under reduced pressure by the nozzle 11 and ejected at a high speed, the inside of the gasoline suction passage 13 is made a negative pressure of about 500 mm with a water column, piping from the gasoline container 200, etc. The gasoline is sucked in via the mixing section 14, and the oxygen and gasoline for suction are mixed in the portion after the mixing section 14, recovered to a pressure higher than the atmospheric pressure by the diffuser 62, passed through the nozzle hole 63, and the high-speed flow of the mixture is generated. It is ejected into the space portion 61 and applied to the circumferential width 54 portion, and then flows out from the six passage holes 52 and is then applied to the receiving surface 7 in the mixture passage 42 and further passes through the mixture passage 42. Mixtures emitting region 3 that is a multi-row spline emit to straight toward the object Te. Then, the discharged mixture is ignited, the object is heated and preheated, and the object is dissolved by continuous heat supply.

予熱が終了すると、溶断用酸素調整弁１０３を開いてその開度を調整し、溶断用酸素を酸素管１０４に送り、溶断用酸素供給部２を介してその酸素ノズル部分２１のノズル２１ａから同様に対象物に向かって高速で放出させる。これにより、対象物の溶解した部分を飛散させると共に、混合物として放出されたガソリンに十分過剰な酸素を供給してガソリンを完全に燃焼させ、更に対象物を溶解させる。 When the preheating is finished, the fusing oxygen regulating valve 103 is opened to adjust its opening, fusing oxygen is sent to the oxygen pipe 104, and the same is applied from the nozzle 21a of the oxygen nozzle portion 21 via the fusing oxygen supply unit 2. To the target at high speed. As a result, the dissolved portion of the object is scattered and a sufficient excess of oxygen is supplied to the gasoline released as a mixture to completely burn the gasoline and further dissolve the object.

以上において、ガソリンの吸引路１３内の負圧によって容器内のガソリンが吸引されると、吸引路１３の部分では負圧によって吸引したガソリンの相当部分が気化していると共に、残りの部分も微小粒になり、酸素中にガソリンがミスト状になって存在することになり、このような性状の混合物が吸引部で作り出され、ディフューザ６２で圧力回復後ノズル穴６３から流出する。 In the above, when the gasoline in the container is sucked by the negative pressure in the gasoline suction passage 13, a considerable portion of the gasoline sucked by the negative pressure is vaporized in the suction passage 13 portion, and the remaining portion is also minute. It becomes a granule and gasoline is present in a mist form in oxygen. A mixture having such properties is produced in the suction portion and flows out of the nozzle hole 63 after the pressure is restored by the diffuser 62.

この場合、高圧ボンベから減圧供給される酸素は低温になるが、その量が少ないため酸素ホース１００等で吸熱して温度が相当程度回復すると共に、常温のガソリンを吸引してこれと混合したり、燃焼熱の影響で温度上昇している吸引用酸素通路３０２等で吸熱するので、混合物はほぼ常温になる。一方、溶断用酸素が供給されると、その量が多いため温度の回復が不十分になり、溶断用酸素管１０４や溶断用酸素供給部２の上部では常温よりかなり温度が低下している。 In this case, the oxygen supplied under reduced pressure from the high-pressure cylinder is at a low temperature. However, since the amount is small, the temperature is recovered by absorbing heat with the oxygen hose 100 or the like, and the normal temperature gasoline is sucked and mixed with it. Since the heat is absorbed by the suction oxygen passage 302, etc., which has risen in temperature due to the influence of combustion heat, the mixture is brought to approximately room temperature. On the other hand, when fusing oxygen is supplied, the amount of the fusing oxygen is large, so that the temperature recovery is insufficient, and the temperature at the upper part of the fusing oxygen tube 104 and the fusing oxygen supply unit 2 is considerably lower than normal temperature.

しかし、本例のガソリン溶断機では、ディフューザ６２から方向転換させて図において下方に配置した空間部６１に向くようにノズル穴６３を設けて、混合物を空間部６１の底面６１ａ上で円周幅５４の部分に当てるようにしているので、酸素通路２２ａの上部で周辺の温度の下がっている部分には直接且つ直角方向から当たらないため、それらの部分と混合物との熱交換性が十分低くなり、混合物の温度は殆ど低下しない。その結果、気化したガソリンが再液化したり、ミストが大きくなって空間部６１の壁面に付着したり、不均一な流れ状態を促進させたり燃焼性を低下させるというような不具合の発生を確実に防止することができる。 However, in the gasoline fusing machine of this example, the nozzle hole 63 is provided so as to face the space portion 61 that is changed in the direction from the diffuser 62 and is arranged downward in the figure, and the mixture has a circumferential width on the bottom surface 61 a of the space portion 61. Since it is applied to the portion 54, the portion where the ambient temperature is lowered at the upper part of the oxygen passage 22a is not directly and perpendicularly hit, so the heat exchange between these portions and the mixture is sufficiently low. The temperature of the mixture hardly decreases. As a result, the occurrence of problems such as re-liquefied vaporized gasoline, large mist adhering to the wall surface of the space portion 61, promoting uneven flow conditions or reducing combustibility is assured. Can be prevented.

又、混合物を高速で円周幅５４の部分に当てるようにしているので、混合物は直接通路穴５２に入ることなく、反射して周辺に分散し空間部６１内に円周方向に乱れた状態で広がるため、混合物が温度低下しないようにノズル穴を下向きに一ヶ所又は二カ所等に設けても、６個の通路穴５２にある程度均一的に混合物を流入させることができる。 Further, since the mixture is applied to the portion of the circumferential width 54 at high speed, the mixture does not directly enter the passage hole 52 but is reflected and dispersed to the periphery and is disturbed in the circumferential direction in the space portion 61. Therefore, even if the nozzle holes are provided in one or two places downward so that the temperature of the mixture does not decrease, the mixture can flow into the six passage holes 52 evenly to some extent.

しかしながら、６個の通路穴５２への混合物の流量はある程度不可避的に不均一になる。そこで本例のガソリン溶断機では、前記の如く通路穴５２を出た混合物を受け面７に当てるようにしている。その結果、混合物は受け面７から反射分散したり受け面７の傾斜方向に沿って流れ、通路穴５２に入る混合物の流量を均一化させる作用が生ずる。 However, the flow rate of the mixture into the six passage holes 52 is inevitably uneven to some extent. Therefore, in the gasoline fusing machine of this example, the mixture that has exited the passage hole 52 as described above is applied to the receiving surface 7. As a result, the mixture is reflected and dispersed from the receiving surface 7 or flows along the inclination direction of the receiving surface 7, so that the flow rate of the mixture entering the passage hole 52 becomes uniform.

即ち、図６に示す如く、仮に６箇所の通路穴５２から出た混合物が受け面７の主として円５２ｂの位置に当たる流量が、（ａ）で放射方向に示した二点鎖線の矢印の長さのように図において上方が多く下方が少ないような分布であったとしても、受け面７に当たると、混合物は円周方向にも分散するため、流量の多い上方から流量の少ない下方に回り込み、結局同図（ｂ）のように、矢印長さで示す円周方向の各位置で混合物通路４２に流れ込む流量が相当程度均一化される。 That is, as shown in FIG. 6, the flow rate at which the mixture that has come out of the six passage holes 52 hits mainly the position of the circle 52b on the receiving surface 7 is the length of the arrow of the two-dot chain line shown in the radial direction in FIG. Even if the distribution is such that the upper part is large and the lower part is small as shown in the figure, the mixture disperses in the circumferential direction when it hits the receiving surface 7, so that the mixture wraps around from the high flow rate to the low flow rate. As shown in FIG. 5B, the flow rate flowing into the mixture passage 42 at each position in the circumferential direction indicated by the arrow length is made fairly uniform.

このように混合物通路４２で均一流量化された混合物が混合物放出部３から放出され着火されてガソリンが燃焼すると、燃焼状態が良好になって対象物には中心線Ｃの回りで均一的に熱が加えられ、火炎分布が均一で安定した状態になり、対象物の溶断性が良くなる効果が生ずる。 When the mixture having a uniform flow rate in the mixture passage 42 is discharged from the mixture discharge unit 3 and ignited to burn gasoline, the combustion state is improved and the object is heated uniformly around the center line C. Is added, the flame distribution becomes uniform and stable, and the effect of improving the fusing property of the object is produced.

なお、本例では、穴形成部５とノズルアダプタ９とをメタルタッチにして、パッキン等を使用するときの消耗部品の発生を回避するようにしているが、熱変形及び熱応力には十分対応する必要がある。即ち、メタルタッチ部の圧接性が不足して高圧の酸素通路２２ａ側から大気圧程度の低圧の空間部６１に溶断用酸素が漏れると、ガソリンを吸引できなくなり、一方、圧接力が大きくなり過ぎると、熱応力により穴形成部５等の変形や破壊の恐れが生ずる。 In this example, the hole forming portion 5 and the nozzle adapter 9 are metal touched so as to avoid the generation of consumable parts when using packing or the like. There is a need to. That is, if the pressure of the metal touch portion is insufficient and the fusing oxygen leaks from the high-pressure oxygen passage 22a to the low-pressure space 61 of the atmospheric pressure, the gasoline cannot be sucked, while the pressure-contact force becomes too large. Then, there is a risk of deformation or destruction of the hole forming portion 5 due to thermal stress.

従って、常温状態で溶断用酸素が漏れず確実にガソリンが吸引されるように締付けナット１０を十分締付けるが、溶断作業が進むと、熱伝達によって穴形成部５が膨張して熱応力が大きくなる。このとき、本例のガソリン溶断機では、混合物の低温化を防止し、溶断用酸素に熱を加えるようなことをすることなく、低温性をある程度維持するようにしているので、その冷却効果によって熱応力の増加を抑制することができる。そして、ノズル穴６３を円周幅５４の部分に向けることによって混合物の通路穴５２への流量が不均一になる可能性に対しても、上記の如く受け面７で流量の均一化を図っている。その結果、本発明の適用により、極めて実用性の高いガソリン溶断機を提供することができる。 Therefore, the clamping nut 10 is sufficiently tightened so that the oxygen for fusing does not leak at room temperature and the gasoline is reliably sucked. However, as the fusing operation proceeds, the hole forming portion 5 expands due to heat transfer and the thermal stress increases. . At this time, in the gasoline fusing machine of the present example, the low temperature of the mixture is prevented and the low temperature property is maintained to some extent without adding heat to the fusing oxygen. An increase in thermal stress can be suppressed. And even if the flow rate of the mixture to the passage hole 52 becomes non-uniform by directing the nozzle hole 63 toward the circumferential width 54, the flow rate is made uniform on the receiving surface 7 as described above. Yes. As a result, the application of the present invention can provide a gasoline fusing machine with extremely high practicality.

ガソリン吸引用酸素と溶断用酸素が供給されて対象物の溶断が進むと、混合物放出部３の先端は切断時の火炎の熱影響を受けて相当高温になる。又、多列スプラインでは、溶断時の熱によって殆ど気化して膨張したガソリンを含む混合気が高速で通過する。そのため、溶断作業を相当期間実施すると、特に混合物放出部３のスプライン側が熱による損傷を受けたり混合気の高速流で損耗して行く。これに対して本例のガソリン溶断機では、受け面７の形成を利用してネジ筒８を設けて、これに混合物放出部３を含み酸素ノズル部分２１になる部材をネジ筒８に着脱可能なように形成しているので、交換の必要性の高い部品のコストを安価にすることができる。即ち、スプラインとして形成された混合物放出部３を含む溶断用酸素供給部２の全体を交換すると、部品が大型化してコスト高になるが、これを分割小形化しているのでコスト低減が図られている。 When the oxygen for gasoline suction and the oxygen for fusing are supplied and the fusing of the object proceeds, the tip of the mixture discharge portion 3 becomes considerably hot due to the heat effect of the flame at the time of cutting. Further, in the multi-row spline, the air-fuel mixture containing gasoline that is almost vaporized and expanded by heat at the time of fusing passes at high speed. For this reason, when the fusing operation is performed for a considerable period of time, the spline side of the mixture discharge portion 3 is damaged by heat or is worn away by the high-speed flow of the air-fuel mixture. On the other hand, in the gasoline fusing machine of this example, the screw cylinder 8 is provided by utilizing the formation of the receiving surface 7, and the member that becomes the oxygen nozzle portion 21 including the mixture discharge portion 3 can be attached to and detached from the screw cylinder 8. Therefore, it is possible to reduce the cost of parts that are highly required to be replaced. That is, if the entire fusing oxygen supply unit 2 including the mixture discharge unit 3 formed as a spline is replaced, the size of the parts increases and the cost increases. However, since this is divided and miniaturized, the cost can be reduced. Yes.

本発明は金属板等の諸部材の切断に好都合に利用される。 The present invention is advantageously used for cutting various members such as metal plates.

本発明を適用したガソリン溶断機の全体構成の一例を示す説明図である。It is explanatory drawing which shows an example of the whole structure of the gasoline fusing machine to which this invention is applied. （ａ）乃至（ｃ）はそれぞれ、上記ガソリン溶断機の先部分を拡大した一部断面図、酸素ノズル部分の正面図及び平面図である。(A) thru | or (c) are the partial sectional views which expanded the tip part of the said gasoline fusing machine, respectively, and the front view and top view of an oxygen nozzle part. （ａ）乃至（ｂ）は図２（ａ）のＡ−Ａ矢視図、（ｃ）は部分断面図、（ｄ）は図２（ａ）及び図３（ｃ）のＢ−Ｂ矢視図である。(A) thru | or (b) is an AA arrow directional view of Fig.2 (a), (c) is a fragmentary sectional view, (d) is an BB arrow directional view of Fig.2 (a) and FIG.3 (c). FIG. ガソリン吸引部分の断面図である。It is sectional drawing of a gasoline suction part. （ａ）乃至（ｅ）は受け面の他の例を示し、（ａ）乃至（ｄ）は縦断面図で（ｅ）横断面図である。(A) thru | or (e) show the other example of a receiving surface, (a) thru | or (d) is a longitudinal cross-sectional view, (e) is a cross-sectional view. （ａ）及び（ｂ）は通路穴に入る混合物の流量配分の説明図である。(A) And (b) is explanatory drawing of the flow volume distribution of the mixture which enters a passage hole.

Explanation of symbols

１吸引部
２溶断用酸素供給部
３混合物放出部
４混合物通過部
５穴形成部
６混合物中間通過部
７受け面（混合物当て部）
８ネジ筒（円筒状部材）
２１酸素ノズル部分
２２円筒状部分
２２ａ酸素通路
２２ｂ外筒面（外側円筒面）
４１内筒面（内側円筒面）
４２混合物通路（混合物通路部分）
５２通路穴
５２ａ混合物入口
５３接線円
５４円周幅
６１空間部
６２ディフューザ（拡大通路部）
６３ノズル穴（縮小通路部） DESCRIPTION OF SYMBOLS 1 Suction part 2 Oxygen supply part for fusing 3 Mixture discharge part 4 Mixture passage part 5 Hole formation part 6 Mixture intermediate passage part 7 Receiving surface (mixture contact part)
8 Screw cylinder (cylindrical member)
21 Oxygen nozzle portion 22 Cylindrical portion 22a Oxygen passage 22b Outer cylindrical surface (outer cylindrical surface)
41 Inner cylinder surface (inner cylindrical surface)
42 Mixture passage (mixture passage section)
52 Passage hole 52a Mixture inlet 53 Tangent circle 54 Circumferential width 61 Space part 62 Diffuser (enlarged passage part)
63 Nozzle hole (reduction passage)

Claims

A suction part formed to suck gasoline with a high-speed flow of gasoline suction oxygen to form a mixture of the gasoline suction oxygen and the gasoline, an oxygen nozzle part at the tip, and a central part connected to the oxygen nozzle part A fusing oxygen supply section, which is provided with a straight oxygen passage and a cylindrical portion having an outer cylindrical surface on the outer side, and is formed so that fusing oxygen passes through the oxygen passage and is released from the oxygen nozzle portion. A mixture discharge portion formed to discharge the mixture from the periphery of the oxygen nozzle portion, and an inner cylindrical surface, and the mixture passes between the outer cylindrical surface and passes to the mixture discharge portion. A mixture passage portion that forms a mixture passage portion to be fed, and a composite passage that is uniformly disposed in a circumferential direction outside the center portion so that the mixture flows out to the mixture passage portion. A hole forming portion having a passage hole, and a mixture intermediate passage portion having a space portion in which a mixture inlet of the passage hole is opened and electrically connected to the suction portion, and using the gasoline as a fuel In a gasoline fusing machine formed so as to be capable of fusing,
A gasoline fusing machine comprising: a mixture contact portion formed so that the mixture flowing out from the plurality of passage holes hits the mixture passage portion and is dispersed.

A suction part formed to suck gasoline with a high-speed flow of gasoline suction oxygen to form a mixture of the gasoline suction oxygen and the gasoline, an oxygen nozzle part at the tip, and a central part connected to the oxygen nozzle part A fusing oxygen supply section, which is provided with a straight oxygen passage and a cylindrical portion having an outer cylindrical surface on the outer side, and is formed so that fusing oxygen passes through the oxygen passage and is released from the oxygen nozzle portion. A mixture discharge portion formed to discharge the mixture from the periphery of the oxygen nozzle portion, and an inner cylindrical surface, and the mixture passes between the outer cylindrical surface and passes to the mixture discharge portion. A mixture passage portion that forms a mixture passage portion to be fed, and a composite passage that is uniformly disposed in a circumferential direction outside the center portion so that the mixture flows out to the mixture passage portion. A hole forming portion having a passage hole, and a mixture intermediate passage portion having a space portion in which a mixture inlet of the passage hole is opened and electrically connected to the suction portion, and using the gasoline as a fuel In a gasoline fusing machine formed so as to be capable of fusing,
The mixture intermediate passage part has an enlarged passage part formed so that the mixture formed by the suction part spreads and a reduced passage part narrower than the enlarged passage part, and the reduced passage part is formed of the mixture. A gasoline fusing machine characterized in that it is formed in a direction including a circumferential width portion between a tangent circle passing through an end of the inlet on the outer cylindrical surface side and the outer cylindrical surface.

The mixture intermediate passage part has an enlarged passage part formed so that the mixture formed by the suction part spreads and a reduced passage part narrower than the enlarged passage part, and the reduced passage part is formed of the mixture. 2. The gasoline according to claim 1, wherein the gasoline is formed in a direction including a circumferential width portion between a tangent circle passing through an end of the inlet on the outer cylindrical surface side and the outer cylindrical surface. Fusing machine.

The mixture contact portion is formed as a cap-shaped top portion of a cylindrical member threaded inside, and is attached to the outer cylindrical surface, and the oxygen nozzle portion is formed to be detachable from the screw. The gasoline fusing machine according to claim 1 or 3, characterized in that.