WO2012083558A1 - 瓦斯钉枪的燃料罐总成 - Google Patents

瓦斯钉枪的燃料罐总成 Download PDF

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Publication number
WO2012083558A1
WO2012083558A1 PCT/CN2010/080254 CN2010080254W WO2012083558A1 WO 2012083558 A1 WO2012083558 A1 WO 2012083558A1 CN 2010080254 W CN2010080254 W CN 2010080254W WO 2012083558 A1 WO2012083558 A1 WO 2012083558A1
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WO
WIPO (PCT)
Prior art keywords
fuel
nail gun
metering valve
gas
guiding tube
Prior art date
Application number
PCT/CN2010/080254
Other languages
English (en)
French (fr)
Inventor
何玉钏
陈建安
吴逸宏
Original Assignee
硕贤企业有限公司
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Publication date
Application filed by 硕贤企业有限公司 filed Critical 硕贤企业有限公司
Priority to PCT/CN2010/080254 priority Critical patent/WO2012083558A1/zh
Publication of WO2012083558A1 publication Critical patent/WO2012083558A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0119—Shape cylindrical with flat end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0176—Shape variable
    • F17C2201/018—Shape variable with bladders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/058—Size portable (<30 l)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0617—Single wall with one layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0382—Constructional details of valves, regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0192—Propulsion of the fluid by using a working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/02—Improving properties related to fluid or fluid transfer
    • F17C2260/024—Improving metering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/05—Applications for industrial use
    • F17C2270/0545—Tools

Definitions

  • the utility model relates to a gas nail gun, in particular to a fuel tank assembly of a gas nail gun. Background technique
  • the power of the gas nail gun comes from the fuel in the fuel tank.
  • the existing gas nail gun fuel tanks are disclosed in US Pat. No. 5,115,944, US Pat. No. 4,522,162, U.S. Patent No. 4,483,474, U.S. Patent No. 4,403,722, the entire disclosure of which is incorporated herein by reference.
  • the metering valve group forms a sealed inner bag; wherein the inner bag contains fuel (commonly a hydrocarbon fuel such as liquefied petroleum gas), and a pressure is provided between the can body and the inner bag for pressing a bag, so that the fuel is squeezed into the metering valve group due to the reduction of the inner bag volume, then enters the combustion chamber of the nail gun through the metering valve group, and is vaporized by the pressure change, and finally the gasification fuel is passed through the fan of the nail gun After the air is mixed, it is ignited and exploded to push the striker to perform the nailing operation.
  • fuel commonly a hydrocarbon fuel such as liquefied petroleum gas
  • the inventor of the present invention discovered after many different experiments and correction directions, as long as Adding a straw to the inner bag can solve the problem that the gas nail gun cannot be fired at a low temperature for a long time.
  • the main object of the present invention is to provide a fuel tank assembly for a gas nail gun, which can solve the problem that the gas nail gun cannot be fired and the number of nails is insufficient at a low temperature, and is convenient, safe, and easy to manufacture. advantage.
  • a gas nail gun fuel tank of the present invention comprises: a tank body filled with a propellant substance capable of generating pressure; a metering valve group disposed on the tank body and having a tank body outside the tank body a valve stem and a joint head located in the tank body; a fuel guiding tube coupled to the joint head and in fluid communication with the metering valve block; and an inner bag disposed in the tank body and the metering
  • the joint head of the valve block forms a sealing joint, and the fuel guiding tube is accommodated therein, and the inner bag houses a liquid fuel and a gaseous fuel formed by vaporization of the liquid fuel, and the fuel guiding tube extends into the The liquid fuel is such that the liquid fuel can flow into the metering valve group along the fuel guiding tube.
  • the utility model has the following beneficial effects: the liquid fuel is separately taken out by the fuel guiding tube, and the gaseous fuel is not introduced into the metering valve group together with the liquid fuel like the existing fuel tank, so whether at room temperature or When the liquid fuel is below the boiling point of the liquid fuel, the liquid fuel entering the metering valve group is sufficient, and the gaseous fuel is not substantially doped, and the volume of the liquid fuel used in the gas nail gun is changed into a gas. It is usually expanded by hundreds of times, so that the above-mentioned sufficient amount of liquid fuel produces a gas phase concentration which is much larger than that of the existing gas nail gun after entering the combustion chamber, so that it can be ignited and exploded in the combustion chamber at a low temperature.
  • the propellant material filled in the tank body It is easy to liquefy in a low temperature environment to cause a pressure drop, but the fuel guiding tube of the present invention can reduce the external pressure required for the liquid fuel to flow to the metering valve group, and therefore, the utility model can provide sufficient amount at low temperature.
  • the liquid fuel to the metering valve group can solve the problem that the gas nail gun cannot be fired at a low temperature for a long time.
  • Figure 1 is a perspective view of a preferred embodiment of the present invention.
  • Figure 2 is a cross-sectional view of the above preferred embodiment of the present invention.
  • Figure 3 is a partial cross-sectional enlarged view of the above preferred embodiment of the present invention.
  • Figure 4 is the same as Figure 1, showing a schematic diagram of the exhaustion of liquid fuel.
  • Combustion chamber 201 fan 202
  • a fuel tank 100 is mounted on a gas nail gun 200 for providing power required for firing the gas nail gun 200.
  • the gas nail gun 200 includes a combustion chamber 201 and a fan 202;
  • the body is not the focus of this utility model and will not be described.
  • the fuel tank 100 of the present embodiment includes a tank body 10, a metering valve group 20, a fuel guiding tube 30 and an inner bag 40;
  • the can body 10 can be the same as the existing gas nail gun fuel tank, and is internally filled with a propellant substance 11 capable of generating pressure, and the propellant material 11 can be compressed air or carbon dioxide and the like which are less susceptible to temperature changes.
  • a propellant such as a hydrocarbon fuel used in any existing fuel tank that is relatively susceptible to temperature and undergoes a phase change. This embodiment is described by taking compressed air as an example.
  • the metering valve group 20 is disposed on the tank body 10 and can be a plurality of metering valve groups matched with the existing gas nail gun fuel tank.
  • the metering valve block 20 of the present embodiment mainly includes a valve stem 21 located outside the can body 10 and a joint head 22 located in the tank body 10, and preferably also has a metering chamber 23, and the detailed structure of the metering valve group See U.S. Patent No. 6,302,297.
  • the fuel guiding tube 30, in this embodiment, is a hollow tube body and is detachably coupled to the joint head 22 (for example, in a similar manner, such as sleeve, piercing, clamping, cementing, etc.)
  • the tube 30 is bonded to the joint head 22).
  • the joint head 22 and the guide tube 30 may be integrally formed, so that the airtightness and reliability are better.
  • the fuel guiding tube 30, in combination with the joint head 22, can be in fluid communication with the metering manifold 20.
  • the inner bag 40 which is a flexible bag body in this embodiment, is disposed in the can body 10 and is in sealing engagement with the joint head 22 of the metering valve block 20.
  • the inner bag may be a variety of inner bags of the existing gas nail gun fuel tank, as disclosed in U.S. Patent No. 6,668,1955, but is not limited thereto.
  • the inner bag 40 of the embodiment is equipped with a liquid fuel L (this embodiment is a mixture of propane and butyl hydrazine), but not limited thereto, and any existing fuel can be used as a fuel for a gas nail gun.
  • the inner bag 40 further includes a gaseous fuel G formed by vaporization of the liquid fuel L (in this embodiment, a mixture of gaseous propane and butyl hydrazine), but is not limited thereto.
  • the fuel guiding tube 30 extends into the liquid fuel L to enable the liquid fuel L to flow into the metering valve group 20 along the fuel guiding tube 30. Further, the fuel guiding tube 30 preferably extends Into the bottom of the inner bag 40 to make the liquid burning Material L can be fully used.
  • the pressure between the can body 10 and the inner bag 40 presses the inner bag 40, so that the liquid fuel L is pushed into the fuel guiding tube 30, flows through the bonding head 22, and then enters the metering chamber 23 , the metering chamber 23 is fully charged with the liquid fuel L of a fixed amount and a fixed volume without the presence of the gaseous fuel G; when the gas nail gun 200 abuts against the working surface, the valve stem 21 of the metering valve group 20 is pressed.
  • the liquid fuel L in the metering chamber 23 is caused to flow from the hole in the valve stem 21 into the combustion chamber 201 of the nail gun 200, at which time the liquid fuel L is vaporized by a sudden change in pressure while passing through the fan 202 of the nail gun 200. After the liquid fuel L in the gasification is mixed with the air, the impact pin can push the striker to perform the nailing operation.
  • the liquid fuel can be separately guided, so that no gaseous fuel enters the metering chamber, so that the gaseous fuel is not introduced together with the liquid fuel like the existing fuel tank.
  • the metering valve group therefore, whether it is at a normal temperature or in a low temperature environment below the boiling point of the liquid fuel, the liquid fuel entering the metering valve group is sufficient, does not be doped with gaseous fuel, and is also used for the liquid state of the gas nail gun.
  • the volume is usually expanded by hundreds of times. Therefore, the gas phase concentration of the present invention entering the combustion chamber is much larger than that of the existing fuel tank filled with the gaseous fuel, and further The concentration of the mixed gas in the combustion chamber can be within a suitable range, and can be ignited and exploded in the combustion chamber.
  • the utility model solves the problem that the gas nail gun can not be fired at a low temperature for a long time, and does not need to take out the fuel tank. Therefore, it is quite convenient to use and there is no need to change the fuel formula, so there is no fuel acquisition and production.
  • the limitation of the cost and the cost it is not necessary to simply increase the tank pressure or greatly increase the proportion of the material required for liquefaction in the fuel, but because of the setting of the fuel guiding tube, the total filling pressure of the fuel can be reduced, so
  • the utility model has the advantages of lower tank pressure and a large number of nails that can be greatly improved.
  • the above-mentioned propellant is a substance which is susceptible to temperature and undergoes a phase change, and is particularly likely to be applied at a low temperature from a simple gas phase to a partial gas phase and a liquid phase formed by liquefaction from the gas phase.
  • the pressure inside the inner bag will be reduced, but through the fuel guiding tube
  • the setting can reduce the external pressure required for the liquid fuel to flow to the metering valve block, so that the fuel tank can still provide a sufficient amount of liquid fuel to the metering valve group at low temperatures, and the original fuel guiding tube can exclude the gaseous fuel from entering the metering valve.
  • the function of the group further enables the fuel tank to function smoothly in a low temperature environment, thereby solving the problem that the gas nail gun cannot be fired at a low temperature for a long time.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Description

瓦斯钉枪的燃料罐总成 技术领域
本实用新型涉及瓦斯钉枪， 尤其涉及一种瓦斯钉枪的燃料罐总成。 背景技术
瓦斯钉枪的动力来自于燃料罐中的燃料。 现有瓦斯钉枪燃料罐公开 于 US5, 115,944、 US4,522,162、 US4,483,474、 US4,403,722等美国专利， 其结构主要包括一罐体、 一计量阀组与一设置于该罐体内且与该计量阀 组形成密封结合的内袋； 其中， 该内袋中容装有燃料 （常见为液化石油 气等碳氢燃料）， 且该罐体与内袋之间设有压力， 用以挤压内袋， 以使燃 料因内袋体积缩小而被挤入计量阀组， 接着通过计量阀组进入钉枪的燃 烧室， 并且因压力变化而气化， 最终通过钉枪的风扇将该气化燃料与空 气混合后， 经点火爆炸以推动撞针进行击钉作业。
但是， 瓦斯钉枪发展至今己数十余年， 其燃料罐迄今仍存在着无法 在低温环境下使用的问题， 其原因的普遍认为： 因为燃料中沸点较高的 物质 （如丁烷）， 在低温环境下不易气化， 因此其进入燃烧室的气相浓度 不足， 无法在燃烧室中爆炸； 又或者是因为罐体与内袋之间用以产生压 力的推进物质受到低温影响而逐渐液化， 导致挤压内袋的压力降低， 导 致无法将内袋中的燃料挤入计量阀组。 当然， 上述二种原因也有可能同 时存在， 视燃料及推进物质的种类而定。
有鉴于此， 目前工程上最常见到的解决方式， 仍是需要由使用者自 行取出燃料罐， 并通过温和加热的方式， 使燃料罐及枪体回温至可操作 状态， 因此在使用上相当不便。 此外， 虽有本领域技术人员通过改良燃 料配方来克服， 但毕竟燃料的取得及制备都有一定的限制、 困难度及成 本问题。 另外还有技术人员通过增加罐体与内袋之间的压力， 或是提高 燃料中液化所需压力较大物质 （如丙烷） 的比例， 但这些方式都分别存 在着压力过高 （不符合各国的安全规范） 以及打钉数量无法符合需求的 缺陷。
对此， 本实用新型发明人经多次不同实验及修正方向后发现， 只要 在内袋中增设一吸管， 即可以解决长久以来瓦斯钉枪在低温下无法击发 的问题。
但是经过检索， 这种吸管搭配内袋及罐压的类似结构已见于美国专 利第 US6439430及 US7198179号， 然而， 由其说明书可知， 这二篇专利 为专用于化妆及医药组成物的喷瓶， 并且其内容物及其相变化行为及流 体力学性能， 与瓦斯钉枪燃料罐中的燃料并不相同； 此外， 这二篇专利 指出， 吸管在喷瓶中的功能仅仅是用来方便内容物 （特别是黏稠物质） 的流动及排出而已， 且该吸管并非必要元件， 而且文中也未提及任何关 于低温操作的教导， 在此先行说明。 实用新型内容
有鉴于此， 本实用新型的主要目的在于提供一种瓦斯钉枪的燃料罐 总成， 可以解决低温下瓦斯钉枪无法击发及击钉数量不足的问题， 且具 有使用方便、 安全、 制作容易的优点。
为了实现上述目的， 本实用新型的瓦斯钉枪燃料罐， 包括： 一罐体， 内部填充有可以产生压力的一推进物质； 一计量阀组， 设置于该罐体， 且具有一位于该罐体外的阀杆与一位于该罐体内的接合头； 一燃料引导 管， 结合于该接合头， 且与该计量阀组呈流体相通； 以及， 一内袋， 设 置于该罐体内， 且与该计量阀组的接合头形成密封结合， 并将该燃料引 导管容置于内， 且该内袋中容装有一液态燃料与一从该液态燃料气化形 成的气态燃料， 该燃料引导管伸入至该液态燃料中， 以使该液态燃料能 够沿着该燃料引导管流入该计量阀组。
由此， 本实用新型具有以下有益效果： 利用燃料引导管单独引出液 态燃料， 而不会像现有燃料罐一样让气态燃料连同液态燃料被一起引入 计量阀组， 因此， 不管是在常温或是在液态燃料沸点以下的低温环境时， 其进入计量阀组的液态燃料是足量的， 实质上不会掺杂气态燃料， 且由 于瓦斯钉枪用的液态燃料在相变化成气体后， 其体积通常呈数百倍膨胀， 因此上述足量的液态燃料在进入燃烧室后所产生的气相浓度是远大于现 有的瓦斯钉枪， 因此可以在低温时在燃烧室中点火爆炸。
再者， 部分市面上的瓦斯钉枪燃料罐， 其罐体内所填充的推进物质， 容易在低温环境下液化而造成压力降低， 但本实用新型的燃料引导管的 设置， 可以降低液态燃料流至计量阀组所需要的外界压力， 因此， 本实 用新型在低温时仍可以提供足量的液态燃料至计量阀组， 因此可以解决 长久以来低温下瓦斯钉枪无法击发的问题。 附图说明
图 1为本实用新型一优选实施例的立体图。
图 2为本实用新型上述优选实施例的剖面图。
图 3为本实用新型上述优选实施例的局部剖面放大图。
图 4类同图 1， 公开液态燃料耗尽时的示意图。
【主要元件符号说明】
罐体 10
推进物质 11
计量阀组 20
阀杆 21
接合头 22
计量腔 23
燃料引导管 30
内袋 40
燃料罐 100
瓦斯钉枪 200
燃烧室 201 风扇 202
气态燃料 G 液态燃料 L 具体实施方式
为了详细说明本实用新型的结构、 特征及效果， 现列举一优选实施 例并配合下列附图说明如后。
请先参阅图 1 至图 3， 为本实用新型一优选实施例所提供的燃料罐 100， 装设于一瓦斯钉枪 200上， 用以提供该瓦斯钉枪 200击发时所需的 动力， 该瓦斯钉枪 200包括一燃烧室 201与一风扇 202; 由于瓦斯钉枪本 体并非本实用新型的重点， 容不赘述。 本实施例的燃料罐 100 包括一罐 体 10、 一计量阀组 20、 一燃料引导管 30与一内袋 40; 其中：
该罐体 10， 可以与现有瓦斯钉枪燃料罐相同， 且内部充填有可以产 生压力的一推进物质 11，该推进物质 11可以为较不易受温度变化影响的 压缩空气或二氧化碳等类似物质， 或是相对易受温度影响而会进行相变 化的任何现有燃料罐所使用的推进物质 （如： 碳氢燃料）。 本实施例以压 缩空气为例作说明。
该计量阀组 20， 设置于该罐体 10上， 可以为现有瓦斯钉枪燃料罐所 搭配的各式计量阀组。 为便于说明本实施例， 现将该计量阀组 20的各个 元件举例说明如后， 但不以此为限。 本实施例的计量阀组 20主要包括一 位于该罐体 10外的一阀杆 21与一位于该罐体 10内的接合头 22，优选还 具有一计量腔 23， 关于计量阀组的详细结构可以参阅美国第 US6302297 号专利。
该燃料引导管 30， 在本实施例为一中空管体， 且是以可拆卸的方式 结合于该接合头 22 (例如以套设、 穿设、 夹固、 黏固等类似结合方式将 引导管 30结合于该接合头 22上）。 当然， 也可以将该接合头 22与引导 管 30以一体成型的方式制作而成， 如此气密性及信赖性更好。 又， 该燃 料引导管 30与该接合头 22结合后， 可以与该计量阔组 20呈流体相通。
该内袋 40， 在本实施例为挠性袋体， 设置于该罐体 10内， 且与该计 量阀组 20的接合头 22形成密封结合。 该内袋可以为现有瓦斯钉枪燃料 罐所搭配的各种内袋， 如美国专利第 US6681955号所公开者即是一例， 但并不以此为限。 此外， 本实施例的内袋 40容装有一液态燃料 L (本实 施例为丙烷及丁垸的混合物）， 但不以此为限， 凡是现有可以作为瓦斯钉 枪燃料者均可以从中选用， 如丙烯、 丁烯、 异丁垸等碳氢燃料， 优选可 以从中选出与上述丙烷、 丁垸两者关系类似的燃料成分。 又， 由于蒸气 压的关系，该内袋 40还包含有从该液态燃料 L气化形成的气态燃料 G (本 实施例即为气态丙烷及丁垸的混合物）， 但不此以为限， 此处根据所选用 的液态燃料而定。 本实用新型组装完成时， 该燃料引导管 30伸入至该液 态燃料 L中， 以使该液态燃料 L能够沿着该燃料引导管 30流入计量阀组 20； 又， 燃料引导管 30优选可以伸入至接近内袋 40底部， 以使液态燃 料 L可以被充分使用。
通过上述结构， 实际操作时， 罐体 10与内袋 40间的压力会挤压内 袋 40， 以使液态燃料 L被挤入燃料引导管 30， 并流经接合头 22后再进 入计量腔 23 , 使得计量腔 23全部充满足量且容积固定的液态燃料 L， 而 不会有气态燃料 G的存在； 当瓦斯钉枪 200抵于工作表面时， 计量阀组 20的阀杆 21会被按压，使得计量腔 23中的液态燃料 L从阀杆 21上的孔 洞流入钉枪 200的燃烧室 201，此时该液态燃料 L会因压力的突然变化而 气化， 同时通过钉枪 200的风扇 202将气化中的液态燃料 L与空气混合 后， 经点火爆炸即可以推动撞针进行击钉作业。 由上述可知， 本实用新 型因为使用燃料引导管， 因此可以单独引导出液态燃料， 所以不会有气 态燃料进入计量腔， 因此不会像现有燃料罐一样让气态燃料连同液态燃 料一起被引入至计量阀组， 因此， 不管是在常温或是在液态燃料沸点以 下的低温环境时， 其进入计量阀组的液态燃料是足量的， 不会掺杂气态 燃料， 又由于瓦斯钉枪用的液态燃料在相变化成气体后， 其体积通常是 呈数百倍膨胀， 因此本实用新型进入燃烧室的气相浓度， 是远大于现有 计量腔掺杂有气态燃料的燃料罐所能提供的， 进而可以使得燃烧室中的 混合气体浓度在合适范围内， 而可以在燃烧室中点火爆炸， 因此本实用 新型解决了长久以来瓦斯钉枪在低温下无法击发的问题， 且不需将燃料 罐取出加热， 因此使用相当方便， 也无需改变燃料配方， 因此无燃料获 取及制备的限制及成本问题， 更无须单纯通过增加罐压或大幅提高燃料 中液化所需压力较大物质的比例， 反而是因为有了燃料引导管的设置， 从而可以降低燃料的充填总压力， 因此本实用新型具有较低罐压、 打钉 数量可以大幅提升的优势。
除此之外， 如图 4所示， 还由于燃料引导管 30的设置， 因此可以使 得液态燃料 L在将用尽时， 仍可以通过推进物质 11将内袋 40挤压至紧 束在燃料引导管 30周壁， 以及燃料引导管 30的辅助而流入计量阀组， 因此可以提高燃料的使用效率， 由此提高打钉数量。
当然， 上述推进物质采用的是易受温度影响而会进行相变化的物质， 特别是容易在低温时， 从单纯气相变换成部分气相与从该气相液化所形 成的液相时， 此时施加在内袋的压力会因而降低， 但通过燃料引导管的 设置， 可以降低液态燃料流至计量阀组所需的外在压力， 使得燃料罐仍 然能够在低温时提供足量的液态燃料至计量阀组， 加上原本燃料引导管 可以排除气态燃料进入计量阀组的功能， 进一步使得此种燃料罐能够顺 利地在低温环境下发挥作用， 从而可以解决长久以来低温下瓦斯钉枪无 法击发的问题。
本实用新型在前述实施例中所公开的构成元件， 仅为举例说明， 并 非用来限制本实用新型的范围， 其它等效元件的替代或变化， 也应为本 实用新型的权利要求所涵盖。

Claims

权利要求
1. 一种瓦斯钉枪的燃料罐总成， 其特征在于， 包含有： 一罐体， 内部填充有可以产生压力的一推进物质；
一计量阔组， 设置于该罐体， 且具有一位于该罐体外的阀杆与一 位于该罐体内的接合头；
一燃料引导管， 结合于该接合头， 且与该计量阀组呈流体相通； 以及
一内袋， 设置于该罐体内， 且与该计量阀组的接合头形成密封结 合， 并将该燃料引导管容置于内， 该内袋中容装有一液态燃料与一从 该液态燃料气化形成的气态燃料，且该燃料引导管伸入至该液态燃料 中， 以使该液态燃料能够沿着该燃料引导管流入该计量阀组。
2. 根据权利要求 1 所述瓦斯钉枪的燃料罐总成， 其特征在于， 该计量阀组具有一计量腔， 以供容纳固定容积的液态燃料。
3. 根据权利要求 1 所述瓦斯钉枪的燃料罐总成， 其特征在于， 该燃料引导管是一体结合于该接合头。
4. 根据权利要求 1 所述瓦斯钉枪的燃料罐总成， 其特征在于， 该燃料引导管是以可拆卸的方式结合于该接合头。
5. 根据权利要求 1 所述瓦斯钉枪的燃料罐总成， 其特征在于， 该推进物质具有一气相与一从该气相液化所形成的液相。
PCT/CN2010/080254 2010-12-24 2010-12-24 瓦斯钉枪的燃料罐总成 WO2012083558A1 (zh)

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