WO2006095934A1 - Chalumeau a auto-allumage permettant une economie d'oxygene - Google Patents

Chalumeau a auto-allumage permettant une economie d'oxygene Download PDF

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Publication number
WO2006095934A1
WO2006095934A1 PCT/KR2005/000647 KR2005000647W WO2006095934A1 WO 2006095934 A1 WO2006095934 A1 WO 2006095934A1 KR 2005000647 W KR2005000647 W KR 2005000647W WO 2006095934 A1 WO2006095934 A1 WO 2006095934A1
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WO
WIPO (PCT)
Prior art keywords
oxygen
gas
ignition
pipe
spark
Prior art date
Application number
PCT/KR2005/000647
Other languages
English (en)
Inventor
Ui-Chang Kang
Original Assignee
Ui-Chang Kang
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ui-Chang Kang filed Critical Ui-Chang Kang
Priority to PCT/KR2005/000647 priority Critical patent/WO2006095934A1/fr
Publication of WO2006095934A1 publication Critical patent/WO2006095934A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/38—Torches, e.g. for brazing or heating
    • F23D14/42—Torches, e.g. for brazing or heating for cutting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2207/00—Ignition devices associated with burner

Definitions

  • oxygen and gas for ignition and flame generation can be supplied to an ignition unit in a mixed state or a separated state. Consequently, the user can efficiently select the state of supplying oxygen and gas according to the volume of the object or according to the intended purpose. Furthermore, in the case in which oxygen and gas are supplied in a mixed state for forming a flame, because the oxygen and gas are mixed while being ejected, it is possible to enhance the intensity of the ignition flame.
  • Korean Patent Application No. 10-2003-0017295 In this gas cutting machine, a user holds a grip of the machine with one hand and opens a gas valve with the other hand. Subsequently, the user holds an ignition grip and moves it backwards. Then, a gate of an ignition unit is opened, thereby an ignition valve is also opened and, simultaneously, a piezoelectric device is pushed. Thus, electricity is generated, so that a first ignition nozzle sparks. Then, a flame is generated in the ignition unit and reaches an end of a nozzle tip without being affected by the wind. If the user releases the ignition grip after the nozzle tip is ignited, the ignition flame is eliminated, and the gate of the ignition unit is closed, thus preventing the penetration of foreign substances. However, there is difficulty in applying the structure of this gas cutting machine to a small-sized cutting machine.
  • an injector 28', a sheath 27' and an oxygen feed control valve 26' are separately coupled to a valve unit by a locking nut 28-1'.
  • the sheath 27' is threaded into the valve unit at a position opposite a valve pin 26-1'.
  • the valve pin 26-1' moves along an internal thread 27-2' of the valve unit.
  • the central axes of the sheath 27' and the valve pin 26-1' are not precisely aligned with each other. Therefore, there is a problem of damage to the valve pin 26-1'. Due to the leakage of oxygen, backfire is caused. Disclosure of Invention
  • an object of the present invention is to provide an auto-igniting oxygen-saving torch which is able to be applied to various models in all countries of the world.
  • Another object of the present invention is to provide an auto-igniting oxygen-saving torch in which gas is mixed with air when used, thus saving oxygen.
  • a further object of the present invention is to provide an auto-igniting oxygen- saving torch which is easily lighted by a user without sequentially holding several portions of the torch with the hands.
  • Yet another object of the present invention is to provide an auto-igniting oxygen- saving torch which is easily ignited, allows the size of a flame to be easily adjusted, and prevents safety hazards.
  • Still another object of the present invention is to provide an auto-igniting oxygen- saving torch with a simplified ignition process, so that it is possible to rapidly ignite the torch, thus increasing productivity and saving energy.
  • Still another object of the present invention is to provide an auto-igniting oxygen- saving torch which is light and strong, thereby enabling easily handling of the torch, and extending the lifetime of the torch.
  • Still another object of the present invention is to provide an auto-igniting oxygen- saving torch in which a valve pin moves along an internal thread of a sheath, so that the central axes of an injector and the sheath are precisely aligned with each other, thus preventing oxygen from leaking, preventing the valve pin from damage, and preventing backfirin Technical Solution
  • the present invention provides an auto- igniting oxygen-saving torch, including: an ignition unit; a front valve unit; a grip; and a rear valve unit, wherein
  • the front valve unit (4) includes: a gas feed control valve (7); and an oxygen feed control valve (26), with a high pressure oxygen pipe (30), a mixed gas feed pipe (11) and an ignition gas feed pipe (14) coupled at predetermined positions to a front part of the front valve unit to feed high pressure oxygen, mixed gas, and gas for ignition, respectively, the front valve unit (4) being coupled at a rear part thereof to a grip pipe (6), in which an oxygen feed pipe (24) is disposed into a double pipe structure
  • the ignition unit (5) includes: a torch head body (33); a nozzle tip (12) coupled to the torch head body (33) through a threaded engagement structure; circular spark rollers (16) and (17) fitted over an outer surface of the torch head body, to which the nozzle tip (12) is coupled, and supported by both a spark roller support bushing (19) and a spark roller support ring (20); and an ignition stone (18) contacting an outer surface of the spark roller (17) using elasticity of a spring (21) supported by a stop bolt (22
  • the rear valve unit (3) includes: a gas feed control valve (7); a gas feed connector
  • the front valve unit may be assembled by engagement between an internal thread (28-1) of the injector and an external thread (27-1) of the sheath, and an external thread (26-2) of the valve pin may move along an internal thread (27-2) of the sheath, so that the lifetime of the valve is extended, and, when the valve is closed, oxygen is prevented from leaking, thus being prevented from becoming turbulent, thereby preventing backfire.
  • the oxygen feed connector (23) and the gas feed connector (8) of the rear valve unit may have a same length, so that a separate process of adjusting lengths of tubes to be coupled to the connectors is omitted, and each of the oxygen feed connector (23) and the gas feed connector (8) may have on an outer surface thereof both saw- toothed grooves (8-2) and a U-shaped groove (8-1), so that each of the oxygen feed connector and the gas feed connector is used as a tube direct coupling type and a one- touch connector coupling type.
  • gas is mixed with air when used, thus saving oxygen.a user can easily ignite the torch without sequentially holding several portions of the torch with the hands.
  • the present invention is easily ignited and the size of a flame can be easily adjusted, thus preventing safety hazards. a ignition process is simplified, so that it is possible to rapidly ignite the torch, thus increasing productivity and saving energy.
  • a valve pin moves along an internal thread of a sheath, so that the central axes of an injector and the sheath are precisely aligned with each other, thus preventing oxygen from leaking, preventing the valve pin from damage, and preventing backfiring.
  • connectors have the same length
  • marketed tubes having connectors can be used without a separate process of adjusting the lengths of the tubes.
  • each connector has the U-shaped groove as well as the saw-toothed grooves, the connector is used as a direct tube coupling type and a one-touch connector coupling type.
  • FIG. IFIG. 3 is a sectional view showing the internal structure of the auto-igniting oxygen-saving torch of FIG. 1;
  • FIG. 4 is a front view showing an ignition method of the ignition unit of the auto- igniting oxygen-saving torch of FIG. 3;
  • FIG. 5 is a side view showing the ignition method of the ignition unit of the auto- igniting oxygen-saving torch of FIG. 3;
  • FIG. 6 is a sectional view showing an enlargement of an injector of the auto- igniting oxygen-saving torch according to the present invention
  • FIG. 7 is an exploded sectional view showing the injector of FIG. 6;
  • FIG. 8 is a sectional view showing an enlargement of an injector of a conventional torch
  • FIG. 9 is an exploded sectional view showing the injector of FIG. 8;
  • FIG. 10 is a view showing an oxygen feed connector and a gas feed connector of the auto-igniting oxygen-saving torch according to the present invention.
  • FIG. 11 is a view showing connectors of the conventional torch.
  • valve unit (tube connection unit) 4. valve unit
  • spark roller (rotating friction unit)17. spark roller (ignition stone friction unit)
  • An auto-igniting oxygen-saving torch 1 includes an ignition unit 5, a grip 2, a front valve unit 4 and a rear valve unit 3.
  • the auto-igniting oxygen-saving torch 1 of the present invention shown in FIGS. 1 and 2 is used as a middle-sized auto-igniting oxygen-saving torch or a large-sized auto- igniting oxygen-saving torch which is an injector mixing type.
  • the front valve unit 4 is an integral injector unlike conventional torches and includes an oxygen feed control valve 26 and a high pressure oxygen feed control valve 29.
  • the front valve unit 4 is constructed such that a sheath 27 of the front valve unit 4 is coupled to the injector 28 by engagement between an internal thread 28-1 formed on an inner surface of the injector 28 and an external thread 27-1 formed on an outer surface of the sheath 27.
  • the front valve unit 4 is constructed such that a valve pin 26-1 of the oxygen feed control valve 26 moves forwards and backwards in the sheath 27 while an external thread 26-2 formed on the valve pin 26-1 engages with an internal thread 27-2 formed on an inner surface of the sheath 27.
  • a high pressure oxygen pipe 30, a mixed gas feed pipe 11 and an ignition gas feed pipe 14 are coupled at predetermined positions to a front part of the front valve unit 4 so as to supply high pressure oxygen, feed mixed gas and ignition gas, respectively.
  • the front valve unit 4 is coupled at a rear part thereof to a grip pipe 6, in which an oxygen feed pipe 24 is disposed as a double pipe structure.
  • valve pin 26- 1 moves forwards and backwards in the sheath 27 by the engagement between the external thread 26-2 of the valve pin 26-1 and the internal thread 27-2 of the sheath 27, the central axis of the valve pin 26- 1 is precisely aligned with the central axis of the sheath 27, thus preventing oxygen from leaking, and preventing backfiring.
  • the ignition unit 5 includes a torch head body 33 and a nozzle tip 12 which is coupled to the torch head body 33 through a threaded engagement.
  • the ignition unit 5 further includes circular spark rollers 16 and 17 which are fitted over the outer surface of the torch head body 33, to which the nozzle tip 12 is coupled.
  • the spark rollers 16 and 17 are supported by both a spark roller support bushing 19 and a spark roller support ring 20.
  • the ignition unit 5 further includes an ignition stone 18 which contacts the outer surface of the spark roller 17 using the elasticity of a spring 21 supported by a stop bolt 22.
  • An ignition gas discharge hole 15 communicates with the ignition gas feed pipe 14.
  • the high pressure oxygen pipe 30 and the mixed gas feed pipe 11 are parallel to each other and coupled to the ignition unit 5.
  • the spark roller support bushing 19 ensures the stable operation of the spark rollers 16 and 17, and the spark roller support ring 20 prevents the spark rollers 16 and 17 and the bushing 19 from being undesirably removed from a torch head.
  • the rear valve unit 3 includes a gas feed control valve 7, a gas feed connector 8 and an oxygen feed connector 23.
  • the rear valve unit 3 is coupled to both the oxygen feed pipe 24 and the grip pipe 6, which form the double pipe structure, such that gas flows through the grip pipe 6.
  • a difference in length exists between a gas feed connector 23-1 and an oxygen feed connector 8-3. Therefore, to use a tube, having a separate connector, among marketed tubes, the length of the tube must be adjusted by cutting by the length difference.
  • the oxygen feed connector 23 and the gas feed connector 8 have the same length, a separate process of adjusting the lengths of tubes to be coupled to the connectors is not required.
  • each of the oxygen feed connector 23 and the gas feed connector 8 has on an outer surface thereof both saw-toothed grooves 8-2 and a U-shaped groove 8-1, so that the oxygen feed connector 23 and the gas feed connector 8 are used as a tube direct coupling type and a one-touch connector coupling type.
  • the spark roller (the rotating friction unit) 16 is brought into close contact with an object to be machined or a planar surface and is then pushed or pulled, the spark rollers 16 and 17 are rotated, and the spark roller 17 is rubbed against the ignition stone 18, which is biased to the spark roller 17 by the spring 21, so that a spark is generated.
  • the gas, which is discharged through the ignition gas discharge hole 15, is first- ignited by the spark, thus forming a first flame 31.
  • the first frame second-ignites the gas, which is discharged through the nozzle tip 12, thus forming a second flame 32.
  • the oxygen feed control valve 26 is open, the valve pin 26-1, having closed the sheath 27, is removed from the sheath 27, so that the opening of the sheath 27 is open. Then, oxygen is supplied into the oxygen feed pipe 24 through the oxygen feed connector 23 and is then drawn into an oxygen passing hole 25. The oxygen continuously passes through the opening of the sheath 27 and then passes through the injector 28 at high speed and high pressure, thus drawing the gas, which is passing through the ignition gas passing holes 10 and 13. Thereby, the supply of the gas into the ignition gas discharge hole 15 is stopped. As a result, the first flame 31 is eliminated.
  • the injector 28 is integrated with the front valve unit 4, so that an interval between the sheath 27 and the injector 28 and their central axes is constantly maintained. Furthermore, because the valve pin 26-1 moves forwards and backwards along the internal thread 27-2 of the sheath 27, the lifetime of the valve pin 26- 1 is extended. As well, when the oxygen feed control valve is closed, oxygen is prevented from leaking, thus preventing turbulence from occurring between an injector and a sheath in a conventional torch (see, FIGS. 8 and 9), thereby preventing safety hazards, such as the explosion of gas due to backfiring.
  • each connector has the U-shaped groove 8-1 as well as the saw-toothed grooves 8-2, the connector is used as a tube direct coupling type and a one-touch connector coupling type.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

L'invention concerne un chalumeau à auto-allumage permettant une économie d'oxygène. Dans ce chalumeau, des galets à étincelle (16, 17) sont frottés contre la pierre d'allumage (18), une étincelle est générée, ce qui provoque le premier allumage du gaz qui se dégage par l'orifice de dégagement de gaz d'allumage pour former la première flamme (31). Cette première flamme (31) permet un second allumage du gaz qui se dégage par la pointe d'ajutage du dispositif. Ensuite, lorsqu'un utilisateur ouvre le robinet de commande d'alimentation en oxygène (26), l'oxygène sort à haute vitesse et à haute pression, ce qui aspire le gaz traversant l'orifice de dégagement de gaz d'allumage (15). Ainsi, la première flamme est éliminée et, simultanément, l'air extérieur est aspiré par l'orifice de dégagement de gaz d'allumage (15), de sorte que le gaz est mélangé à l'oxygène et que l'air est envoyé dans la pointe d'ajutage (12), ce qui permet de réduire la consommation d'oxygène.
PCT/KR2005/000647 2005-03-08 2005-03-08 Chalumeau a auto-allumage permettant une economie d'oxygene WO2006095934A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2005/000647 WO2006095934A1 (fr) 2005-03-08 2005-03-08 Chalumeau a auto-allumage permettant une economie d'oxygene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2005/000647 WO2006095934A1 (fr) 2005-03-08 2005-03-08 Chalumeau a auto-allumage permettant une economie d'oxygene

Publications (1)

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WO2006095934A1 true WO2006095934A1 (fr) 2006-09-14

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PCT/KR2005/000647 WO2006095934A1 (fr) 2005-03-08 2005-03-08 Chalumeau a auto-allumage permettant une economie d'oxygene

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103062792A (zh) * 2012-12-20 2013-04-24 青岛上联机械设备有限公司 连铸坯火切机辅助点火枪
US8568651B2 (en) 2010-08-03 2013-10-29 Victor Equipment Company Mixer for a gas cutting torch
US8609020B2 (en) 2010-08-03 2013-12-17 Victor Equipment Company Gas cutting tip with improved flow passage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458884A (en) * 1983-10-27 1984-07-10 Fischer Robert A Head mixer and thermal conductor for a cutting torch
US4572483A (en) * 1984-05-30 1986-02-25 I Ling Industry Co., Ltd. Cutting torch
KR19980024777U (ko) * 1998-03-05 1998-07-25 김유선 자동점화장치부착 가스토치
KR20020062011A (ko) * 2001-01-19 2002-07-25 강성작 자동점화 가스 절단기
WO2003010467A1 (fr) * 2001-07-26 2003-02-06 Shile Gao Procede d'auto-allumage faisant intervenir de l'essence et de l'oxygene d'une decoupe a la main et soudage a essence, et lampe a souder associee
KR20040107712A (ko) * 2003-06-10 2004-12-23 (주)더블유 티 씨 자동점화가스절단기

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458884A (en) * 1983-10-27 1984-07-10 Fischer Robert A Head mixer and thermal conductor for a cutting torch
US4572483A (en) * 1984-05-30 1986-02-25 I Ling Industry Co., Ltd. Cutting torch
KR19980024777U (ko) * 1998-03-05 1998-07-25 김유선 자동점화장치부착 가스토치
KR20020062011A (ko) * 2001-01-19 2002-07-25 강성작 자동점화 가스 절단기
WO2003010467A1 (fr) * 2001-07-26 2003-02-06 Shile Gao Procede d'auto-allumage faisant intervenir de l'essence et de l'oxygene d'une decoupe a la main et soudage a essence, et lampe a souder associee
KR20040107712A (ko) * 2003-06-10 2004-12-23 (주)더블유 티 씨 자동점화가스절단기

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8568651B2 (en) 2010-08-03 2013-10-29 Victor Equipment Company Mixer for a gas cutting torch
US8609020B2 (en) 2010-08-03 2013-12-17 Victor Equipment Company Gas cutting tip with improved flow passage
US8758526B2 (en) 2010-08-03 2014-06-24 Victor Equipment Company Method of mixing gases for a gas cutting torch
US8784574B2 (en) 2010-08-03 2014-07-22 Victor Equipment Company Method of directing a gas flow in a gas cutting tip
CN103062792A (zh) * 2012-12-20 2013-04-24 青岛上联机械设备有限公司 连铸坯火切机辅助点火枪

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