M406502 為了達成上述目的，本創作之瓦斯釘槍燃料罐總成， 包括：一罐體，内部填充有可產生壓力之一推進物質；一 計量閥組，設於該罐體，且具有一位於該罐體外之閥桿與 一位於該罐體内之接合頭；一燃料引導管，結合於該接合 頭，且與該計量閥組呈流體相通；以及，一内袋，設於該 罐體内，且與該計量閥組之接合頭形成密封結合，並將該 燃料引導管容置於内，且該内袋中容裝有一液態燃料與一 自該液態燃料氣化形成之氣態燃料，該燃料引導管係伸入 至該液態燃料中’以使該液態燃料能夠循該燃料引導管流 入該計量閥組。 藉此，本創作利用燃料引導管單獨引出液態燃料，而 不會像習用燃料罐一樣讓氣態燃料連同液態燃料被一起引 入計量閥組，因此，不管是於常溫或是於液態燃料沸點以 下的低溫環境時，其進入計量閥組的液態燃料是足量的， 實質上不會參雜氣態燃料，且由於瓦斯釘搶用的液態燃料在 ^ 相變化成氣體後，其體積通常呈數百倍膨脹，因此上述足量 的液態燃料在進入燃燒室後所產生的氣相濃度是遠大於習用 者的，故可在低溫時於燃燒室中點火爆炸。 再者，部分市面上的瓦斯釘搶燃料罐，其罐體内所填充的 推進物質，容易在低溫環境下液化而造成壓力降低，但本創作 之燃料引導管的設置’可降低液態燃料流至計量閥組所需 要的外在壓力，因此，本創作在低溫時仍可提供足量的液 態燃料至計量閥組，故可解決長久以來低溫下瓦斯釘搶無 法擊發之問題。 5 M406502 【實施方式】 為了詳細說明本創作之結構、特徵及功效，兹列舉一 較佳實施例並配合下列圖式說明如後。 請先參閱第一至三圖’為本創作一較佳實施例所提供 之燃料罐總成100，係裝設於一瓦斯釘搶200上，用以提 供該瓦斯釘槍200擊發時所需之動力，該瓦斯釘搶2〇〇包 括一燃燒室201與一風扇202 ;由於瓦斯釘搶本體並非本 創作之重點，容不贅述。本實施例之燃料罐總成1〇〇包括 罐體10、一計董閥組20、一燃料引導管3〇與一内袋4〇 ; 一 其中： * 該罐體10，係可與習用瓦斯釘搶燃料罐相同，且内部 充填有可產生壓力之一推進物質U ,該推進物質u可為 較不易受溫度變化影響的壓縮空氣或二氧化碳等類似物 質，或是相對易受溫度影響而會進行相變化的任何習用燃 料罐所使用的推進物質(如··碳氫燃料）。本實施例係以壓 縮空氣為例作說明。 該计量閥組20，设於該罐體1〇上，係可為習用瓦斯 釘槍燃料罐所搭配的各式計。為便於說明本實施 例，兹將該計量閥組20的各個树舉例說明如後，但不以 此為限。本實闕之計_組2G主要包括—位於該賴 10外之-閥桿21與-位於該罐體1〇内之接合頭22,較佳 還具有-計量腔23, _計量_轉域構可參閱美國 第US6302297號專利。 該燃料引導管30,於本實施例為一中空管體，且係以 6 M406502 可拆卸之方式結合於該接合頭22(例如以套設、穿設、夾 固、黏固等類似結合方式將引導管3〇結合於該接合頭22 上）。當然，亦可將該接合頭22與5|導管3〇以一體成型之 方式製作而成，如此氣密性及信賴性更佳。又，該燃料引 導管30與該接合頭22結合後，係可與該計量閥組2〇’係呈 流體相通。 該内袋40 ’於本實施例為撓性袋體，係設於該罐體1〇 • 内，且與該計量閥組2〇之接合頭22形成密封結合。該内 ‘ 袋可為習用瓦斯釘槍燃料罐所搭配的各種内袋，如美國專 利第US6681955號所揭示者即是一例，但並不以此為限。 此外，本實施例之内袋40容裝有一液態燃料L(本實施例 為丙烷及丁烷之混合物），但不以此為限，舉凡習知可作為 瓦斯釘搶燃料者均可從中選用，如丙烯、丁烯、異丁烷等 碳氫燃料，較佳可從中選出與上述丙烧、丁烧兩者關係類 似的燃料成分。又，由於蒸氣壓的關係，該内袋4〇還包含 ‘ 有自該液態燃料L氣化形成的氣態燃料G(本實施例即為氣 態丙烷及丁烷之混合物），但不此以為限，此係根據所選用 的液態燃料而定。本創作組裝完成時，該燃料引導管3〇 係伸入至該液態燃料L中，以使該液態燃料l能夠循該燃 料引導管30流入計量閥組2〇 ;又，燃料引導管3〇較佳可 伸入至接近内袋40底部，以使液態燃料1可被充分使用。 藉由上述結構，實際操作時，罐體10與内袋40間的 ㈣會讎内袋40 ’以使液態燃料L被擠入燃料引導管3〇， 並流經接合頭22後再進入計量腔23，使得計量腔23全部充 7 M406502 滿足量且容積固定的液態燃料L，而不會有氣態燃料G的存 在；當瓦斯釘搶200抵於工作表面時，計量閥組2〇的閥桿 21會被按壓，使得計量腔23中的液態燃料l從閥桿21上 的孔洞流入釘搶200的燃燒室201，此時該液態燃料L會因壓 力的突然變化而氣化，同時藉由釘搶2〇〇的風扇202將氣化中 的液態燃料L與空氣混合後，經點火爆炸即可推動撞針進行擊 釘作業。由上述可知，本創作因為使用燃料引導管，故可單 獨引導出液態燃料’所以不會有氣態燃料進入計量腔，故 不會像習用燃料罐一樣讓氣態燃料連同液態燃料一起被引 入至計量閥組，因此，不管是在常溫或是於液態燃料沸點 以下的低溫環境時，其進入計量閥組的液態燃料是足量 的，不會參雜氣態燃料，又由於瓦斯釘搶用的液態燃料在相 變化成氣體後，其體積通常是呈數百倍膨脹，因此本創作進 入燃燒室的氣相濃度，是遠大於習用計量腔參雜有氣態燃料 之燃料罐所能提供的，進而可使得燃燒室中的混合氣體濃度 在合適範圍内，而可在燃燒室中點火爆炸，是以本創作解決 了長久以來瓦斯釘槍在低溫下無法擊發之問題，且不需將 燃料罐取出暖和’故使用相當方便，亦無需改變燃料配方， 故無燃料取得及製備之限制及成本問題，更無須單純透過增加 罐壓或大幅提高燃料中液化所需壓力較大者的比例，反而是因 為有了燃料引導管的設置，從而可降低燃料的充填總壓力，故 本創作具有較低罐壓、打釘數量可大幅提升之優勢。 除此之外’如第四圖所示，也由於燃料引導管3〇的設 置，故可使得液態燃料L在將用盡時，仍可藉由推進物質 8 π將内袋40擠壓至緊束在燃料引導管3〇周壁，以及燃料引 導管30的輔助而流入計量閥組，故可提高燃料的使用效率， 藉此提高打釘數量。 當然，如上述推進物質採用的是易受溫度影響而會進 行相變化的物質，特別是容易在低溫時，從單純氣相變換 成部分氣相與自該氣相液化所形成之液相時，此時施予内 袋的壓力會因而降低，但藉由燃料引導管的設置，係可降低 液態燃料流至計量閥組所需的外在壓力，使得燃料罐仍然 能夠在低溫時提供足量的液態燃料至計量閥組，加上原本 燃料引導管可排除氣態燃料進入計量閥組之功用，更使得 此種燃料罐能夠順利地在低溫環境下發揮作用，從而可解 決長久以來低溫下瓦斯釘搶無法擊發之問題。 本創作於前揭實施例中所揭露的構成元件，僅為舉例 說明，並非用來限制本案之範圍，其他等效元件的替代或 變化’亦應為本案之申凊專利範圍所涵蓋。 M406502 【圖式簡單說明】 第一圖為本創作一較實施例之立體圖。 第二圖為本創作上述較佳實施例之剖面圖。 第三圖為本創作上述較佳實施例之局部剖面放大圖M406502 In order to achieve the above object, the gas nail gun fuel tank assembly of the present invention comprises: a tank body filled with a propellant capable of generating pressure; a metering valve group disposed on the tank body and having a a valve stem outside the tank 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 group; and an inner bag disposed in the tank body And forming a sealing joint with the joint head of the metering valve group, and accommodating the fuel guiding tube, wherein the inner bag contains a liquid fuel and a gaseous fuel formed by vaporization of the liquid fuel, the fuel guiding A tubing extends into the liquid fuel to enable the liquid fuel to flow into the metering valve block following the fuel guiding tube. In this way, the present invention uses the fuel guiding tube to separately extract the liquid fuel, instead of letting the gaseous fuel together with the liquid fuel be introduced into the metering valve group like the conventional fuel tank, so whether it is at normal temperature or below the boiling point of the liquid fuel. In the environment, the liquid fuel entering the metering valve group is sufficient, and it does not substantially mix with the gaseous fuel, and the volume of the liquid fuel that is grabbed by the gas nail is usually expanded by several hundred times after the gas is changed into a gas. Therefore, the concentration of the gas phase generated by the above-mentioned sufficient amount of liquid fuel after entering the combustion chamber is much larger than that of the conventional one, so that it can be ignited and exploded in the combustion chamber at a low temperature. In addition, some of the gas nails on the market grab the fuel tank, and the propellant material filled in the tank body is liable to be liquefied in a low temperature environment to cause a pressure drop, but the setting of the fuel guiding tube of the present invention can reduce the flow of liquid fuel to The external pressure required by the metering valve group, therefore, the creation of a sufficient amount of liquid fuel to the metering valve group at low temperatures can solve the problem that the gas nail can not be fired at a low temperature for a long time. 5 M406502 [Embodiment] In order to explain the structure, features and effects of the present invention in detail, a preferred embodiment will be described with reference to the following drawings. Please refer to the first to third figures of the fuel tank assembly 100 provided in a preferred embodiment of the present invention, which is mounted on a gas nail 200 to provide the gas nail gun 200 for firing. Power, the gas nail grab 2 includes a combustion chamber 201 and a fan 202; since the gas nail grabbing body is not the focus of this creation, it is not described. The fuel tank assembly 1 of the embodiment includes a tank body 10, a metering valve group 20, a fuel guiding tube 3〇 and an inner bag 4〇; one of which: * the tank body 10, which can be used with conventional gas The nail-carrying fuel tank is the same, and the inside is filled with a propelling material U which can generate pressure, and the propelling material u can be compressed air or carbon dioxide or the like which is less susceptible to temperature changes, or is relatively susceptible to temperature. A propellant (such as a hydrocarbon fuel) used in any conventional fuel tank that changes phase. This embodiment is described by taking compressed air as an example. The metering valve group 20 is disposed on the tank body 1 and can be used for various types of conventional gas gun fuel tanks. For convenience of explanation of the present embodiment, the respective trees of the metering valve group 20 will be exemplified as follows, but are not limited thereto. The present invention _ group 2G mainly includes - the valve stem 21 and the joint head 22 located in the tank body 1 , preferably having a metering chamber 23, _ metering_transfer structure See U.S. Patent No. 6,302,297. The fuel guiding tube 30 is a hollow tube body in the embodiment, and is detachably coupled to the joint head 22 in a manner of 6 M406502 (for example, by socket, piercing, clamping, cementing, etc.). The guide tube 3 is coupled to the joint head 22). Of course, the joint head 22 and the 5|duct 3 亦可 can also be integrally formed, so that the airtightness and reliability are better. Further, the fuel conduit 30 is coupled to the joint head 22 to be in fluid communication with the metering valve block 2'. The inner bag 40' is a flexible bag body in the present embodiment, and is disposed in the can body 1 and is in sealing engagement with the bonding head 22 of the metering valve group 2A. The inner bag may be a variety of inner bags that are compatible with conventional gas nail gun fuel tanks, as disclosed in U.S. Patent No. 6,668,1955, which is not limited thereto. In addition, the inner bag 40 of the embodiment is equipped with a liquid fuel L (this embodiment is a mixture of propane and butane), but it is not limited thereto, and any one who can be used as a gas nail to grab fuel can be selected. For a hydrocarbon fuel such as propylene, butene or isobutane, it is preferred to select a fuel component similar to the above-mentioned relationship between the above-mentioned firing and baking. Further, due to the vapor pressure, the inner bag 4〇 further includes 'a gaseous fuel G formed by vaporization of the liquid fuel L (in this embodiment, a mixture of gaseous propane and butane), but not limited thereto. This is based on the liquid fuel chosen. When the creation of the present assembly is completed, the fuel guiding tube 3 is inserted into the liquid fuel L so that the liquid fuel 1 can flow into the metering valve group 2 according to the fuel guiding tube 30; Jia can extend close to the bottom of the inner bag 40 so that the liquid fuel 1 can be fully used. With the above structure, in actual operation, the (four) between the can body 10 and the inner bag 40 will cover the inner bag 40' so that the liquid fuel L is pushed into the fuel guiding tube 3, and flows through the bonding head 22 before entering the metering chamber. 23, so that the metering chamber 23 is fully charged with 7 M406502 liquid fuel L of a fixed amount and a fixed volume, without the presence of gaseous fuel G; when the gas nail grabs 200 against the working surface, the valve stem 21 of the metering valve group 2〇 Will be pressed, so that the liquid fuel l in the metering chamber 23 flows from the hole in the valve stem 21 into the combustion chamber 201 of the nail grab 200, at which time the liquid fuel L will be vaporized due to sudden changes in pressure, and at the same time by nailing The 2-inch fan 202 mixes the vaporized liquid fuel L with the air, and then pushes the striker to perform the nailing operation after the ignition explosion. As can be seen from the above, the present invention can separately guide the liquid fuel because the fuel guiding tube is used. Therefore, no gaseous fuel enters the metering chamber, so that the gaseous fuel is not introduced into the metering valve together with the liquid fuel like the conventional fuel tank. Therefore, whether it is at a normal temperature or a low temperature environment below the boiling point of liquid fuel, the liquid fuel entering the metering valve group is sufficient, it does not mix with gaseous fuel, and the liquid fuel that is grabbed by gas nails is After the phase is changed into a gas, the volume is usually expanded by hundreds of times. Therefore, the gas phase concentration of the present combustion chamber into the combustion chamber is much larger than that of the fuel tank filled with the gaseous fuel in the conventional metering chamber, thereby enabling combustion. The concentration of the mixed gas in the chamber is within a suitable range, and it can be ignited and exploded in the combustion chamber. This solution 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 the fuel tank out of the warmth. It is quite convenient and there is no need to change the fuel formula. Therefore, there are no restrictions on the cost of fuel acquisition and preparation, and there is no need to simply increase it. The ratio of the tank pressure or the pressure required to greatly increase the liquefaction in the fuel is rather the setting of the fuel guiding tube, so that the total filling pressure of the fuel can be reduced, so the creation has a lower tank pressure and a number of nailing. Greatly improved advantage. In addition, as shown in the fourth figure, also due to the arrangement of the fuel guiding tube 3, the liquid fuel L can be squeezed to the inner bag 40 by the propelling substance 8 π when the liquid fuel L is about to be used up. The bundle flows into the metering valve group at the peripheral wall of the fuel guiding tube 3 and the auxiliary of the fuel guiding tube 30, so that the use efficiency of the fuel can be improved, thereby increasing the number of nailing. Of course, as described above, the propellant is a substance which is susceptible to temperature and undergoes phase change, particularly when it is easy to change from a simple gas phase to a partial gas phase and a liquid phase formed from the gas phase liquefaction at a low temperature. At this time, the pressure applied to the inner bag is thus lowered, but by the arrangement of the fuel guiding tube, the external pressure required for the liquid fuel to flow to the metering valve group can be reduced, so that the fuel tank can still provide a sufficient amount at a low temperature. The liquid fuel to the metering valve group, together with the original fuel guiding tube, can eliminate the function of the gaseous fuel entering the metering valve group, so that the fuel tank can smoothly function in a low temperature environment, thereby solving the long-term low temperature gas nailing Unable to fire the problem. The constituent elements disclosed in the foregoing examples are merely illustrative and are not intended to limit the scope of the present invention. The substitution or variation of other equivalent elements should also be covered by the scope of the patent application of this application. M406502 [Simple description of the drawings] The first figure is a perspective view of a comparative example of the creation. The second figure is a cross-sectional view of the above preferred embodiment of the present invention. The third figure is an enlarged partial cross-sectional view of the above preferred embodiment of the present invention.
第四圖類同第一圖 ，揭示液態燃料用罄時之示意圖 【主要元件符號說明】 罐體10 推進物質11 計量閥組20 閥桿21 計量腔23 燃料引導管30 内袋40 燃料罐總成1〇〇 瓦斯釘搶200 接合頭22 燃燒室201 風扇202 氣態燃料G 液態燃料LThe fourth figure is similar to the first figure, which shows the schematic diagram of the liquid fuel used for 罄 [main component symbol description] tank 10 propellant material 11 metering valve group 20 valve stem 21 metering chamber 23 fuel guiding tube 30 inner bag 40 fuel tank assembly 1 〇〇 gas nail grab 200 joint head 22 combustion chamber 201 fan 202 gaseous fuel G liquid fuel L