TW200824793A - Two-fluid spray burner - Google Patents

Two-fluid spray burner Download PDF

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Publication number
TW200824793A
TW200824793A TW096129252A TW96129252A TW200824793A TW 200824793 A TW200824793 A TW 200824793A TW 096129252 A TW096129252 A TW 096129252A TW 96129252 A TW96129252 A TW 96129252A TW 200824793 A TW200824793 A TW 200824793A
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TW
Taiwan
Prior art keywords
liquid fuel
fluid
fuel tank
fluid spray
combustion
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TW096129252A
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Chinese (zh)
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TWI327086B (en
Inventor
Keiichi Nakagawa
Naohiko Matsuda
Shigeru Nojima
Katsuki Yagi
Akira Goto
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Nippon Oil Corp
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Publication of TW200824793A publication Critical patent/TW200824793A/en
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Publication of TWI327086B publication Critical patent/TWI327086B/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • F23D11/106—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting at the burner outlet
    • F23D11/107—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting at the burner outlet at least one of both being subjected to a swirling motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
    • B05B7/30—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid the first liquid or other fluent material being fed by gravity, or sucked into the carrying fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/40—Mixing tubes or chambers; Burner heads
    • F23D11/404—Flame tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Spray-Type Burners (AREA)
  • Nozzles (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)

Abstract

To stably supply liquid fuel without causing significant fluctuation in a supply flow rate of the liquid fuel even when the supply flow rate of the liquid fuel is low. In this two-fluid spray burner 11 for atomizing the liquid fuel 24 by air for atomization and burning the atomized fuel, the burner 11 has a liquid fuel tank 19 provided with a cylindrical side section 20 and a bottom section 21 provided at a lower end of the side section 20, storing the liquid fuel 24 supplied from a liquid fuel supply pipe 25, and allowing the stored liquid fuel 24 to flow out from a liquid fuel outflow hole 22 located below a liquid level 23 of the stored liquid fuel 24 and formed on the bottom section 21. The liquid fuel 24 flowing out from the liquid fuel outflow hole 22 of the liquid fuel tank 19 is atomized by a gas 46 for atomization and burned.

Description

200824793 九、發明說明 【發明所屬之技術領域】 本發明係有關一種在以霧化用氣體來霧化液體燃料之 狀態下使其燃燒的雙流體噴霧燃燒裝置。 ~ 【先前技術】 雙流體噴霧燃燒裝置係爲在以霧化用氣體來霧化液體 Φ 燃料之狀態下使其燃燒者，例如作爲燃料發電系統之重組 器的熱源等使用。 在習知的雙流體噴霧燃燒裝置中，液體燃料從液體燃 料供給系統的泵，經由液體燃料供給管而供給，且從該液 體燃料供給管的前端部流出。然後，對於從該液體燃料供 給管所流出的流體燃料，混合霧化用的空氣，藉此來霧化 該液體燃料使其燃燒。 〔專利文獻1〕日本特開第2002-224592號公報 【發明內容】 〔發明欲解決之課題〕 ^ 但上述習知的雙流體噴霧燃燒裝置是假設來自前述泵 的液體燃料的供給流量較多的情況下所設計的。因此’如 果在前述液體燃料的供給流量很少的狀態使用，藉由從前 述泵之間歇性（振動性）的供給液體燃料，如第14(a) 圖舉例所示，液體燃料會從液體燃料供給管1的前端部 1A間歇性地流出。因而，如第1 4 ( b )圖舉例所示’液體 -5- 200824793 燃料的供給流量會產生較大變動。因此，無法 液體燃料，且難以確立穩定的燃燒，會有引起 產生和失火之虞。 再者，雖然此對策也考慮到即使流量很低 給燃料的方式來提高液體燃料供給系統的泵性 的對策中，由於需要昂貴的泵，因此會引起裝 化。 因而本發明係有鑑於上述情形，其課題在 即使液體燃料供給流量很低，亦不會引起液體 量太大的變動，能穩定供給液體燃料的雙流體 置。 〔用以解決課題的手段〕 解決上述課題的第1發明之雙流體噴霧燃 以霧化用氣體來霧化液体燃料使其燃燒的雙流 裝置，其特徵爲： 具有筒狀的側部和設在該側部之下端的底 貯留著從液體燃料供給管所供給的液體燃料， 該已貯留的液體燃料之液面更下方，使前述已 燃料，從開設在前述側部或前述底部的一個或 體燃料流出孔流出之構造的液體燃料槽， 以前述霧化用氣體來霧化從該液體燃料槽 燃料流出孔流出的液體燃料使其燃燒的構造。 又，第2發明之雙流體噴霧燃燒裝置，係 穩定的供給 未燃排氣之 仍可穩定供 能，但相關 置的高成本 於提供一種 燃料供給流 噴霧燃燒裝 燒裝置，係 體噴霧燃燒 部，且具備 並且位在比 貯留的液體 複數個的液 之前述液體 第1發明之 -6 - 200824793 雙流體噴霧燃燒裝置，其特徵爲： 前述液體燃料流出孔係開設在前述液體燃料槽的底部 具備：形成在前述液體燃料槽之側部與圍繞該側部之 周圍的外筒之間的筒狀霧化用氣體流路；和 設置在前述外筒的下端部，具有下側的噴嘴本體部與 上側的霧化用氣體導入部，且將位在前述液體燃料流出孔 之下方的雙流體合流空間部形成在前述噴嘴本體部以及前 述霧化用氣體導入部之中央部，且將連通至該雙流體合流 空間部的一個或複數個的噴霧孔形成在前述噴嘴本體部， 且將連通前述霧化用氣體流路與前述雙流體合流空間部的 一個或複數個的溝形成在前述霧化用氣體導入部之構造的 雙流體噴霧噴嘴， 前述液體燃料槽係設置在前述霧化用氣體導入部上， 從前述液體燃料流出孔流出並流入到前述雙流體合流 空間部的液體燃料，是構成與在前述霧化用氣體流路流到 下方之後，在前述霧化用氣體導入部流到前述溝被引導到 前述雙流體合流空間部的霧化用氣體，在前述雙流體合流 空間部合流之後，與該霧化用氣體一起從前述噴霧孔被噴 霧。 又，第3發明之雙流體噴霧燃燒裝置，係第2發明之 雙流體噴霧燃燒裝置，其特徵爲： 在前述液體燃料槽之底部的下面係形成尖細的錐面部 200824793 且在前述霧化用氣體導入部的上面亦形成尖細的錐面 部， 前述液體燃料槽，係在以前述液體燃料槽的錐面部嵌 入到前述霧化用氣體導入部之錐面部的方式抵接的狀態下 • ，設置在前述霧化用氣體導入部上。 ^ 又，第4發明之雙流體噴霧燃燒裝置，係第1發明之BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-fluid spray combustion apparatus which burns a liquid fuel in a state of atomizing a liquid fuel by atomization. [Prior Art] The two-fluid spray combustion apparatus is used to burn a liquid Φ fuel with a gas for atomization, for example, as a heat source of a recombiner of a fuel power generation system. In a conventional two-fluid spray combustion apparatus, liquid fuel is supplied from a pump of a liquid fuel supply system via a liquid fuel supply pipe, and flows out from a front end portion of the liquid fuel supply pipe. Then, the fluid for atomization is mixed with the fluid fuel flowing out from the liquid fuel supply pipe, whereby the liquid fuel is atomized and burned. [Patent Document 1] JP-A-2002-224592 SUMMARY OF INVENTION [Problem to be Solved by the Invention] However, the above-described conventional two-fluid spray combustion apparatus assumes that the supply flow rate of the liquid fuel from the pump is large. Designed in case. Therefore, if it is used in a state where the supply flow rate of the liquid fuel is small, the liquid fuel is supplied from the liquid fuel by the intermittent (vibratory) supply of the liquid fuel from the aforementioned pump, as exemplified in Fig. 14(a) The front end portion 1A of the supply pipe 1 intermittently flows out. Therefore, as shown in the figure of Fig. 14(b), the supply flow rate of the liquid -5-200824793 fuel varies greatly. Therefore, it is impossible to liquid fuel, and it is difficult to establish stable combustion, which may cause generation and fire. Further, in this measure, in consideration of the countermeasure against the pumping property of the liquid fuel supply system in such a manner that the flow rate is low and the fuel is supplied, an expensive pump is required, which causes assembly. Therefore, the present invention has been made in view of the above circumstances, and it is a problem that even if the liquid fuel supply flow rate is low, the liquid amount is not greatly changed, and the two-fluid gas supply of the liquid fuel can be stably supplied. [Means for Solving the Problem] The two-fluid spray of the first invention which solves the above-described problem is a two-flow device that atomizes a liquid fuel by atomizing a gas to burn it, and has a tubular side portion and a The bottom of the lower end of the side portion stores the liquid fuel supplied from the liquid fuel supply pipe, and the liquid level of the stored liquid fuel is lower than the liquid level, so that the fuel is opened from the side or the bottom portion. The liquid fuel tank having a structure in which the fuel outflow hole flows out is configured to atomize the liquid fuel flowing out of the liquid fuel tank fuel outflow hole by the atomizing gas to burn it. Further, the two-fluid spray combustion apparatus according to the second aspect of the invention is capable of stably supplying energy while stably supplying unburned exhaust gas, but the related high cost is to provide a fuel supply flow spray combustion and burning device, and the system spray combustion unit Further, the liquid-liquid atomizing burner according to the first aspect of the present invention is characterized in that the liquid fuel outflow hole is provided at the bottom of the liquid fuel tank. a tubular atomizing gas flow path formed between a side portion of the liquid fuel tank and an outer cylinder surrounding the side portion; and a nozzle body portion provided at a lower end portion of the outer cylinder and having a lower side a gas introduction portion for atomization on the upper side, and a two-fluid junction space portion located below the liquid fuel outflow hole is formed in a central portion of the nozzle body portion and the atomization gas introduction portion, and is connected to the pair One or a plurality of spray holes of the fluid confluence space portion are formed in the nozzle body portion, and communicate the gas flow path for atomization with the two fluids One or a plurality of grooves in the flow space portion are formed in the two-fluid spray nozzle of the atomization gas introduction portion, and the liquid fuel tank is provided in the atomization gas introduction portion, and flows out from the liquid fuel outflow hole The liquid fuel that has flowed into the two-fluid merging space portion is configured to flow downward in the atomizing gas flow path, and then flows into the groove at the atomizing gas introduction portion to be guided to the two-fluid convection space portion. The atomizing gas is merged with the atomizing gas from the spray hole after the two-fluid combining space portion merges. Further, the two-fluid spray combustion apparatus according to the second aspect of the present invention is characterized in that the two-fluid spray combustion apparatus according to the second aspect of the present invention is characterized in that: a tapered tapered surface portion 200824793 is formed on the lower surface of the bottom portion of the liquid fuel tank, and is used for the atomization. The upper surface of the gas introduction portion is also formed with a tapered tapered surface portion, and the liquid fuel tank is in contact with the tapered surface portion of the liquid fuel tank so as to be in contact with the tapered surface portion of the atomizing gas introduction portion. The atomizing gas introduction portion is used. Further, the two-fluid spray combustion apparatus according to the fourth aspect of the invention is the first invention

雙流體噴霧燃燒裝置，其特徵爲I • 前述液體燃料流出孔係開設在前述液體燃料槽的底部 ， 具備：形成在前述液體燃料槽之側部與圍繞該側部之 周圍的外筒之間的筒狀霧化用氣體流路；和 設置在前述外筒的下端部，將位在前述液體燃料流出 孔之下方的雙流體合流空間部形成在中央部，且形成連通 至該雙流體合流空間部的一個或複數個的噴霧孔之構造的 雙流體噴霧噴嘴；和 • 在前述液體燃料槽之底部的下面係形成尖細的錐面部 # 且在前述雙流體噴霧噴嘴的上面亦形成尖細的錐面部 前述液體燃料槽，係在以前述液體燃料槽的錐面部嵌 入到前述雙流體噴霧噴嘴之錐面部的方式抵接的狀態下， 設置在前述雙流體噴霧噴嘴上。 在前述液體燃料槽之底部，係形成連通前述霧化用氣 體流路與前述雙流體合流空間部的一個或複數個的溝， -8- 200824793 從前述液體燃料流出孔流出並流入到前述雙流體合流 空間部的液體燃料，是構成與在前述霧化用氣體流路流到 下方之後，在前述液體燃料槽之底部流到前述溝被引導到 前述雙流體合流空間部的霧化用氣體，在前述雙流體合流 ^ 空間部合流之後，與該霧化用氣體一起從前述噴霧孔被噴 、 霧。 又，第5發明之雙流體噴霧燃燒裝置，係第2〜第4 • 發明的任一發明之雙流體噴霧燃燒裝置，其特徵爲： 前述雙流體合流空間部係上面視之爲圓形狀， 前述霧化用氣體導入部的溝或前述液體燃料槽之底部 的溝，係在上面視之，形成沿著前述雙流體合流空間部之 圓周的接線方向。 又，第6發明之雙流體噴霧燃燒裝置，係第2〜第4 發明的任一發明之雙流體噴霧燃燒裝置，其特徵爲： 前述雙流體合流空間部係上面視之爲圓形狀， • 前述霧化用氣體導入部的溝或前述液體燃料槽之底部 的溝，係在上面視之，形成沿著前述雙流體合流空間部之 蜃 徑向。 ^ 又，第7發明之雙流體噴霧燃燒裝置，係第5或第6 發明之雙流體噴霧燃燒裝置，其特徵爲： 前述霧化用氣體導入部的溝或前述液體燃料槽之底部 的溝，係以在前述雙流體合流空間部之中心軸周呈旋轉對 稱之位置關係的方式形成複數個。 又，第8發明之雙流體噴霧燃燒裝置，係第2〜第7 -9- 200824793 發明之雙流體噴霧燃燒裝置，其特徵爲： 藉由具備往下按壓前述液體燃料槽的按壓構件， 形成使前述液體燃料槽之底部，朝前述雙流體噴霧噴 嘴的霧化用氣體導入部按壓而密著的構造， 或者，形成使前述液體燃料槽之底部，朝前述雙流體 噴霧噴嘴按壓而密著的構造。 又，第9發明之雙流體噴霧燃燒裝置，係第1發明之 雙流體噴霧燃燒裝置，其特徵爲： 前述液體燃料流出孔係開設在前述液體燃料槽的底部 具備：形成在前述液體燃料槽之側部與圍繞該側部之 周圍的外筒之間的筒狀第1霧化用氣體流路；和 設置在前述外筒的下端部，將位在前述液體燃料流出 孔之下方的雙流體合流空間部形成在中央部，且形成連通 至該雙流體合流空間部的一個或複數個的噴霧孔之構造的 雙流體噴霧噴嘴， 在前述雙流體噴霧噴嘴的上面係形成尖細的錐面部， 在前述液體燃料槽之底部的下面亦形成尖細的錐面部 在前述液體燃料槽之側部係突設複數個支撐部，且在 該等之支撐部的下面亦形成錐面部， 前述液體燃料槽，係在以前述支撐部的錐面部嵌入到 前述雙流體噴霧噴嘴之錐面部的方式抵接的狀態下，設置 在前述雙流體噴霧噴嘴上。 -10- 200824793 以藉由前述支撐部，在前述液體燃料槽的錐面部與前 述雙流體噴霧噴嘴的錐面部之間所確保的間隙，作爲第2 霧化用氣體流路， 從前述液體燃料流出孔流出並流入到前述雙流體合流 ^ 空間部的液體燃料，是構成與在前述第1霧化用氣體流路 ' 流到下方之後，通過前述支撐部之間的霧化用氣體流通部 ，流到前述第2霧化用氣體流路被引導到前述雙流體合流 • 空間部的霧化用氣體，在前述雙流體合流空間部合流之後 ，與該霧化用氣體一起從前述噴霧孔被噴霧。 又，第1 〇發明之雙流體噴霧燃燒裝置，係第2〜第9 發明的任一發明之雙流體噴霧燃燒裝置，其特徵爲： 前述雙流體合流空間部係爲倒圓錐狀，在該倒圓錐狀 之空間部的頂點位置，形成有前述噴霧孔。 又，第Π發明之雙流體噴霧燃燒裝置，係第2〜第 10發明的任一發明之雙流體噴霧燃燒裝置，其特徵爲： • 具備形成在前述外筒與圍繞前述外筒之周圍的氣體燃 料供給管之間的筒狀氣體燃料流路， * 氣體燃料是構成在前述氣體燃料流路流到下方，從前 ^ 述氣體燃料流路之下端被噴射而燃燒。 又，第12發明之雙流體噴霧燃燒裝置，係第1〜第 Η發明的任一發明之雙流體噴霧燃燒裝置，其特徵爲： 前述液體燃料供給管的前端部，是連接在前述液體燃 料槽之側部的內周面。 再者，上述第1〜第2發明的任一發明之雙流體噴霧 -11 - 200824793 燃燒裝置，更可具備如下的構造。 即，第1構造之雙流體噴霧燃燒裝置，係爲第 2發明中任一發明的雙流體噴霧燃燒裝置，從雙流 器之雙流體噴霧噴嘴，將液體燃料形成霧狀朝該雙 ^ 霧噴嘴之下方的燃燒空間部噴射，使其燃燒的燃燒 、 其特徵爲： 具備：形成在前述雙流體噴霧器與圍繞前述雙 φ 霧器之周圍的燃燒裝置外筒之間的筒狀燃燒用空氣 和 分隔該燃燒用空氣流路與前述燃燒空間部的遮I 設置在該遮板之外周側的燃燒用空氣流通孔， 在前述燃燒用空氣流路流到下方的燃燒用空氣 成利用前述遮板遮擋，而被引導到前述遮板之外周 此遠離前述燃料噴射噴嘴，通過前述燃燒用空氣流 入前述燃燒空間部之構造。 • 又，第2構造之雙流體噴霧燃燒裝置，係第1 雙流體噴霧燃燒裝置，其特徵爲z # 設置從前述遮板之下面朝下方延伸的燃燒用空 | 延遲用的筒，在該筒與前述燃燒裝置外筒之間形成 述燃燒用空氣流通孔的筒狀之其他燃燒用空氣流路 通過前述燃燒用空氣流通孔的燃燒用空氣，是 前述其他燃燒用空氣流路流到下方之後，從前述其 用空氣流路之下端，流入前述燃燒空間部。 又，第3構造之雙流體噴霧燃燒裝置，係第2 1〜第 體噴霧 流體噴 裝置， 流體噴 流路； 5 ;和 ，是構 側，藉 通孔流 構造之 氣供給 連通前 構成在 他燃燒 構造之 12- 200824793 雙流體噴霧燃燒裝置，其特徵爲： 將從前述遮板之下面朝下方延伸的防回水用之筒，以 一個或複數個設置在前述燃燒用空氣供給延遲用之筒的內 側。 又，第4構造之雙流體噴霧燃燒裝置，係第〗〜第3 構成中任一構造的雙流體噴霧燃燒裝置，其特徵爲： 在前述遮板，係在比前述燃燒用空氣流通孔更內側形 成有其他的複數個燃燒用空氣流通孔。 〔發明效果〕 若藉由第1發明之雙流體噴霧燃燒裝置，構成具有筒 狀的側部和設在該側部之下端的底部，且具備貯留著從液 體燃料供給管所供給的液體燃料，並且位在比該已貯留的 液體燃料之液面更下方，使前述已貯留的液體燃料，從開 設在前述側部或前述底部的一個或複數個的液體燃料流出 孔流出之構造的液體燃料槽，以前述霧化用氣體來霧化從 該液體燃料槽之前述液體燃料流出孔流出的液體燃料使其 燃燒，藉此即使當液體燃料從液體燃料供給管間歇性地供 給到液體燃料槽時，貯留在液體燃料槽的液體燃料亦會連 續性地從液體燃料槽的液體燃料流出孔流出。即，當液體 燃料供給系統之泵的供給流量降低’從液體燃料供給管往 液體燃料槽間歇性地供給液體燃料時’貯留在液體燃料槽 內之液體燃料的液面會稍微上下變動’而來自液體燃料流 出孔之液體燃料的流出流量稍微變動的程度，並不像習知 -13- 200824793 有那麼大的液體燃料供給流量之變動。因此，當液體燃料 供給流量很低時，液體燃料也能穩定的供給，並且變得很 容易確立穩定燃燒，不會有引起未燃排氣之產生和失火之 虞。 ~ 若藉由第2發明的雙流體噴霧燃燒裝置，由於從前述 ‘ 液體燃料流出孔流出並流入到前述雙流體合流空間部的液 體燃料，是構成與在前述霧化用氣體流路流到下方之後， φ 在前述霧化用氣體導入部流到前述溝被引導到述雙流體合 流空間部的霧化用氣體，在前述雙流體合流空間部合流之 後，與該霧化用氣體一起從前述噴霧孔被噴霧，因此液體 燃料會與因溝而加快流速（水平方向的速度成份增加）的 霧化用氣體在雙流體合流空間部良好混合之後，從雙流體 噴霧噴嘴的噴霧孔被噴射。因此，與未設置雙流體合流空 間部和溝的情形相比，由於液體燃料之噴霧的廣角變大， 液體燃料確實的被霧化，因此該液體燃料的燃燒性提昇。 • 若藉由第3發明的雙流體噴霧燃燒裝置，由於前述液 體燃料槽，係在以前述液體燃料槽之錐面部被嵌入到前述 * 霧化用氣體導入部的錐面部的方式抵接的狀態下，設置在 * 前述霧化用氣體導入部上，因此液體燃料槽與雙流體噴霧 噴嘴的中心軸很容易對合。因而，由於液體燃料糟不是單 靠一邊，是在周方向均勻的形成霧化用氣體流路的寬度， 就能均勻的在前述周方向形成霧化用氣體流路的霧化用氣 體的流動，因此能確保來自雙流體噴霧噴嘴之噴霧孔的液 體燃料之噴霧的對稱性（即火炎的對稱性）。 14- 200824793 若藉由第4發明的雙流體噴霧燃燒裝置，由於從前述 液體燃料流出孔流出並流入到前述雙流體合流空間部的液 體燃料，是構成與在前述霧化用氣體流路流到下方之後， 在前述液體燃料槽之底部流到前述溝被引導到前述雙流體 合流空間部的霧化用氣體，在前述雙流體合流空間部合流 之後，與該霧化用氣體一起從前述噴霧孔被噴霧，藉此液 體燃料會與因前述溝而加快流速（水平方向的速度成份增 加）的霧化用氣體在雙流體合流空間部良好混合，並從噴 霧孔被噴霧。因此，與未設置雙流體合流空間部和溝的情 形相比，由於液體燃料之噴霧的廣角變大，液體燃料確實 的被霧化，因此該液體燃料的燃料性提昇。 進而，由於前述液體燃料槽，係在以前述液體燃料槽 之錐面部被嵌入到前述雙流體噴霧噴嘴的錐面部之方式抵 接的狀態下，設置在前述雙流體噴霧噴嘴上，因此液體燃 料槽與雙流體噴霧噴嘴的中心軸很容易對合。因而，由於 液體燃料糟不是單靠一邊，是在周方向均勻的形成霧化用 氣體流路的寬度，就能均勻的在前述周方向形成霧化用氣 體流路的霧化用氣體的流動，因此能確保來自雙流體噴霧 噴嘴之噴霧孔的液體燃料之噴霧的對稱性（即火炎的對稱 性）。 若藉由第5發明的雙流體噴霧燃燒裝置，由於前述霧 化用氣體導入部的溝或前述液體燃料槽之底部的溝，是在 上面視之，形成沿著前述雙流體合流空間部之圓周的接線 方向，藉此在雙流體合流空間部，霧化用氣體變成旋流而 -15- 200824793 與液體燃料混合，因此液體燃料與霧化用氣體，會更確實 的混合。因此，能更確實的霧化從雙流體噴霧噴嘴的噴霧 孔被噴射的液體燃料，進一步提昇該液體燃料的燃燒性。 若藉由第6發明的雙流體噴霧燃燒裝置，由於前述霧 化用氣體導入部的溝或前述液體燃料槽之底部的溝，是在 上面視之，形成沿著前述雙流體合流空間部之徑向，藉此 在雙流體合流空間部，霧化用氣體衝突至燃料的方式混合 於液體燃料，因此液體燃料與霧化用氣體，會更確實的混 合。因此，能更確實的霧化從雙流體噴霧噴嘴的噴霧孔被 噴射的液體燃料，進一步提昇該液體燃料的燃燒性。 若藉由第7發明的雙流體噴霧燃燒裝置，由於前述霧 化用氣體導入部的溝或前述液體燃料槽之底部的溝，係以 在前述雙流體合流空間部之中心軸周呈旋轉對稱之位置關 係的方式形成複數個，因此，從雙流體噴霧噴嘴的噴霧孔 被噴霧的液體燃料之周方向的分佈量變均勻，並能提昇該 液體燃料的燃燒性。 若藉由第8發明的雙流體噴霧燃燒裝置，由於藉由具 備往下按壓前述液體燃料槽的按壓構件，使前述液體燃料 槽之底部，構成朝前述雙流體噴霧噴嘴的霧化用氣體導入 部按壓而密著，或者，使前述液體燃料槽之底部，構成朝 前述雙流體噴霧噴嘴按壓而密著爲其特徵，因此燃料槽之 底部的下面會與霧化用氣體導入部的上面密著，燃料槽之 底部的錐面部會與霧化用氣體導入部的錐面部密著，或者 液體燃料槽的錐面部會與雙流體噴霧噴嘴的錐面部密著， -16- 200824793 藉此就能防止在該等之接觸面間形成間隙。因此，能防止 霧化用氣體流到溝以外的部分，充分發揮因溝所致的廣大 區域之噴霧效果。 若藉由第9發明的雙流體噴霧燃料裝置，即藉由從前 述液體燃料流出孔流出並流入到前述雙流體合流空間部的 液體燃料，是構成與在前述第1霧化用氣體流路流到下方 之後，通過前述支撐部之間的霧化用氣體流通部，且流到 前述第2霧化用氣體流路被引導到前述雙流體合流空間部 的霧化用氣體，在前述雙流體合流空間部合流之後，與該 霧化用氣體一起從前述噴霧孔被噴霧，液體燃料在雙流體 合流空間部與霧化用氣體混合之後，從雙流體噴霧噴嘴的 噴霧孔被噴霧。因此，與未設置雙流體合流空間部的情形 相比，由於液體燃料之噴霧的廣角變大，液體燃料確實的 被霧化，因此該液體燃料的燃料性提昇。 若藉由第9發明的雙流體噴霧燃料裝置，由於前述雙 流體合流空間部爲倒圓錐狀，在該倒圓錐狀之空間部的頂 點位置形成有前述噴霧孔，因此能更確實的進行雙流體合 流空間部之液體燃料與霧化用氣體的混合。因此，能更確 實的霧化從噴霧孔所噴霧的液體燃料，進一步提昇液體燃 料的燃燒性。 若藉由第11發明的雙流體噴霧燃料裝置，由於具備 形成在前述外筒與圍繞前述外筒之周圍的氣體燃料供給管 之間的筒狀氣體燃料流路，氣體燃料是構成在前述氣體燃 料流路流到下方，從前述氣體燃料流路之下端被噴射而燃 -17- 200824793 燒，藉此從筒狀之氣體燃料流路被噴射的氣體燃料會均与 的形成在周方向，因此在燃燒性提昇，且例如液體燃料之 供給量較少時等，發揮因氣體燃料所致的保炎效果。 若藉由第12發明的雙流體噴霧燃料裝置，由於前述 液體燃料供給管的前端部，是連接在前述液體燃料槽之側 部的內周面，因此當來自液體燃料供給管之液體燃料的流 出量較少時，液體燃料亦會輸送到前述內周面而流掉，因 此能令來自液體燃料流出孔的液體燃料更穩定的流出。亦 即’如果液體燃料成爲粒狀而落下，雖認爲貯留在液體燃 料槽內的液體燃料之液面會產成較大的變動，且液面非常 低的情況下，會暫時露出液體燃料流出孔，液體燃料的流 出中斷，但液體燃料輸送到液體燃料槽的內周面流下來的 話，就能防止相關之缺點的產生。 而且，若藉由第1構造的雙流體噴霧燃燒裝置，由於 在前述燃燒用空氣流路流到下方的燃燒用空氣，是利用前 述遮板遮擋，被引導到前述遮板之外周側，藉此遠離前述 燃料噴射噴嘴，通過前述燃燒用空氣流通孔，流入前述燃 燒空間部，因此在燃燒空間部僅前述燃燒用空氣的一部份 ，會與從燃料噴射噴嘴被噴射的燃料混合，應用於該燃料 的燃燒，剩餘的前述燃燒用空氣，會進一步流到下方，與 因前述燃燒而產生的燃燒排氣混合。因此，藉由一次（一 段）之燃燒用空氣供給，就能達成燃燒用空氣與燃料的適 度混合，就不會過度冷卻火炎’使其產生大量的燃燒排氣 。因而，能以簡易的構造產生大量的燃燒排氣，且可實現 -18 - 200824793 亦不會有引起未燃氣體之產生和失火之虞的雙 燒裝置等之燃燒裝置。 更由於遮板所致，使燃燒用空氣在離開燃 的位置流入到燃燒空間部，因此一部份的燃燒 給到燃料的位置，能自遮板遠離下方。因而， 也會自遮板遠離下方，就能防止煤灰附著在遮 附著在遮板之下面的煤灰量太多的話，雖有可 所致之燃料噴射噴嘴的堵塞或煤灰吸收火炎的 燃料噴射器異常加熱等的缺點，但如上所述防 在遮板的下面，藉此就能防患相關缺點的產生 若藉由第2構造的雙流體噴霧燃燒裝置， 前述遮板之下面朝下方延伸的燃燒用空氣供給 ，在該筒與前述燃燒裝置外筒之間形成連通前 氣流通孔的筒狀之其他燃燒用空氣流路，通過 空氣流通孔的燃燒用空氣，是構成在前述其他 流路流到下方之後，從前述其他燃燒用空氣流 流入前述燃燒空間部造，因此能使一部份的燃 延遲供給到從燃料噴射噴嘴被噴射的燃料。亦 的燃燒用空氣被供給到燃料的位置，能自遮板 因而’火炎的位置也會自遮板遠離下方，就能 著在遮板的下面。再者，雖然所謂該一部份的 被供給到燃料的位置，自遮板遠離下方的作用 只設置如上述的遮板也能獲得，但如本第2發 燃燒用空氣供給延遲用的筒，一部份的燃燒用 流體噴霧燃 料噴射噴嘴 用空氣被供 火炎的位置 板的下面。 能產生煤灰 輻射熱導致 止煤灰附著 〇 由於設置從 延遲用的筒 述燃燒用空 前述燃燒用 燃燒用空氣 路之下端， 燒用空氣， 即，一部份 遠離下方。 防止煤灰附 燃燒用空氣 效果，即使 明，若設置 空氣被供給 -19- 200824793 到燃料的位置，就能更確實的自遮板遠離下方。 並且，在上述第1構成中，因燃燒裝置之 等，遮板不能太大，燃料噴射噴嘴至燃燒用空: 距離不夠充分的情況下，供給到燃料的一部份, 氣的量過多，會有過度冷卻火炎之虞。對此如2 ，若設置燃燒用空氣供給延遲用的筒，不但能 的燃燒用空氣被供給到燃料的位置，自遮板遠 時亦能減低被供給到燃料的一部份之燃燒用空 成適當的量。因而，亦由相關的觀點來看，設 發明的筒很有效，也能藉由設置筒來縮小遮板 裝置的小型化。 若藉由第3構成的雙流體噴霧燃燒裝置， 板之下面朝下方延伸的防回水用之筒，以一個 置在前述燃燒用空氣供給延遲用之筒的內側， 用防回水用的筒，來防止在遮板之下面附近產 水（對流）。因此，能防止在遮板之下面附近 也產生引燃，煤灰附著在遮板的下面。 若藉由第4構成的雙流體噴霧燃燒裝置， ，係在比前述燃燒用空氣流通孔更內側形成其 燃燒用空氣流通孔，藉此由於一部份的燃燒用 過該等之其他的燃燒用空氣流通孔，因此能藉 空氣之流動來抑制在遮板之下面附近產生燃燒 流，抑制煤灰附著在遮板的下面。並且，由於 用空氣經由前述其他的燃燒用空氣流通孔流到 大小的限制 流通孔的 燃燒用空 第2構成 夠將一部份 離下方，此 氣的量，形 置如本第2 ，達到燃燒 將從前述遮 或複數個設 藉此就能利 生燃料的回 回水的燃料 在前述遮板 他的複數個 空氣，也通 由該燃燒用 用空氣的回 低溫的燃燒 燃料噴射噴 -20- 200824793 嘴的附近，因此也可得到所謂能藉由該燃燒用空氣來冷谷11 易因火炎之輻射熱而過熱的燃料噴射噴嘴之效果° 【實施方式】 〔用以實施發明的最佳形態〕 以下，根據圖面詳細說明本發明的實施形態例。 <實施形態例1> 第1圖是表示有關本發明之實施形態例1之雙流體噴 霧燃燒裝置之構造的縱剖面圖，第2圖是第1圖之A-A線 端之橫剖面圖，第3圖是第1圖之B-B線端之橫剖面圖。 並且，第4圖（a)是抽出配備在第1圖之雙流體噴霧燃 燒裝置的雙流體噴霧器所示的放大縱剖面圖，第4圖（b )是第4圖（a)之C-C線端之橫剖面圖，第5圖（a)是 放大前述雙流體噴霧器之下側部分所示的縱剖面圖，第5 圖（b)是抽出配備在前述雙流體噴霧器之雙流體噴霧噴 嘴所不的俯視圖（第5圖（a )之D箭頭方向視圖）。 根據第1、2及3圖，說明本實施形態例1之雙流體 噴霧燃燒裝置1 1的槪要，本雙流體噴霧燃燒裝置1 1具有 燃燒裝置外筒48，在該燃燒裝置外筒48內，在上側的中 央部係配置有雙流體噴霧器12,該雙流體噴霧器12的下 側爲燃燒空間部1 3。在雙流體噴霧器1 2之周圍係形成有 氣體燃料供給路1 4，更在氣體燃料供給路1 4之周圍係形 成有燃燒用空氣供給路1 5。並且，燃燒用空氣供給路徑 -21 - 200824793 1 5與燃燒空間部1 3之間’係以作爲遮板的平板1 8分隔， 在平板18的下面，係設有：作爲燃燒用空氣供給延遲用 的筒之第1圓筒16、和作爲防積水用的筒之第2筒17。 根據第4及5圖，詳述有關雙流體噴霧器12之構造 。再者，雙流體噴霧器1 2係用來噴射液體燃料與霧化用 ^ 氣體（霧化用空氣）之雙流體，即以前述霧化用氣體來霧 化並噴射前述液體燃料。 φ 如第4及5圖所示，在雙流體噴霧器12係內裝有液 體燃料槽1 9。液體燃料槽1 9係具有··圓筒狀的側部（主 體部）20、和設置在該側部20之下端的底部2 1的構造。 然後，在液體燃料槽1 9的內部係貯留有燃燒裝置燃燒用 的液體燃料24，在液體燃料槽1 9之底部2 1的中央部係開 設有微細的液體燃料流出孔22。液體燃料流出孔22，係 位在比貯留於液體燃料槽1 9內之液體燃料24的液面23 更下方。 ® 即，從液體燃料供給管2 5所供給的液體燃料24，暫 時貯留在液體燃料槽1 9內，該貯留的液體燃料24，是從 下面的液體燃料流出孔22往液體燃料槽1 9的外面流出。 ‘ 此時貯留在液體燃料槽19內之液體燃料24的液面23之 高度（自底部21的內面21a至液面23之高度），係爲得 以對應於液體燃料24流通到液體燃料流出孔22時之壓力 損失部份的液柱頭（詳細後述）之高度。燃燒裝置燃燒用 的液體燃料24例如可使用燈油、重油、酒精、乙醚等。 液體燃料供給管25係其前端部（下端部）25A，從液 -22- 200824793 體燃料槽1 9的上端向下插入到液體燃料槽1 9內，以在液 面23的上方且位於中央部的方式配設在液體燃料槽1 9內 。液體燃料供給管2 5的基端側係連接在圖未示的液體燃 料供給系統的液體燃料供給泵。 再者，如第5圖（a )以虛線所示，液體燃料供給管 25之前端部25A，亦可接觸在液體燃料槽19之側部20的 內周面20a。液體燃料24之供給流量很少時，在液體燃料 供給管25的前端部25A離開液體燃料槽19的內周面20a 的情況下，雖然液體燃料24會如圖示例形成粒狀掉落下 來，但在液體燃料供給管25的前端部25A接觸到液體燃 料槽1 9之內周面20a的情況下，液體燃料24會輸送到該 內周面20a而流下來。 液體燃料槽1 9係與噴霧器外筒27同心圓狀的設置在 圓筒狀的噴霧器外筒27內，液體燃料槽19的側部20與 噴霧器外筒27之間的圓筒狀之空間部，係作爲霧化用氣 體流路的霧化用空氣流路2 8。在噴霧器外筒2 7係開設有 空氣流入孔2 9，在該空氣流入孔2 9係連接著霧化用空氣 供給管3 0的前端部3 0 A。霧化用空氣供給管3 〇的基端側 係連接在圖未示的霧化用空氣供給系統的空氣供給鼓風機 〇 雙流體噴霧噴嘴38係安裝在噴霧器外筒27的下端部 2 7 A，且位在液體燃料槽1 9的下側。即，雙流體噴霧器 1 2係作爲用來緩和液體燃料供給流量之變動的緩衝部，使 液體燃料體1 9介設在液體燃料供給管2 5與雙流體噴霧噴 -23- 200824793 嘴38之間的構造。雙流體噴霧噴嘴38係具有：圓板狀的 噴嘴本體部39、和形成在噴嘴本體部39之上作爲霧化用 氣體導入部的霧化用空氣導入部37，在令噴嘴本體部39 之上面的周緣部抵接到噴霧器外筒27的下端面，且令霧 化用空氣導入部37嵌合在噴霧器外筒27之下端部27 a的 • 內側之狀態，藉由焊接等的固定手段，被固定在噴霧器外 筒27的下端部27A。 # 霧化用空氣導入部37係形成圓環狀，在其中央部具 有平面視之（上面視之）爲圓形狀的空間部4 1。噴嘴本體 部3 9，係在其中央部形成有倒圓錐狀的空間部（凹部）42 ’且在中心（倒圓錐狀之空間部42的頂點位置）開設有 微細的噴霧孔44。霧化用空氣導入部3 7的空間部4 1與噴 嘴本體部3 9的空間部42係相連接，該些空間部4 1、42 是構成雙流體合流空間部43。即，雙流體合流空間部43 係上面視之爲圓形狀，其直徑爲隨著朝向噴霧孔44而緩 ® 緩縮小的尖細構造。在霧化用空氣導入部3 7，係在其周方 向的兩處形成有溝（裂縫）40。該等之溝40係爲廻旋型 ，在上面視之，形成沿著雙流體合流空間部4 3之圓周的 ~ 接線方向，且在雙流體合流空間部43之中心軸（在圖示 例中係噴霧孔44的中心軸）周爲旋轉對稱（於周方向呈 等間隔）的位置關係。 另一方面，噴霧器外筒27的上端部27B，係藉由蓋 體31來閉塞，該蓋體31亦作爲用來防止霧化用空氣由噴 霧器外筒27內朝外漏洩的閉塞構件。蓋體3 1，係藉由使 -24- 200824793 得形成在其下部3 1 A之外周面的螺紋部3 3，螺合於形成 在噴霧器外筒27之上端部27B的內周面的螺紋部32，而 安裝在噴霧器外筒27的上端部278。在蓋體31的段部 3 1B與噴霧器外筒27的上端部27B之間，係介設有用來 確實防止霧化用空氣漏洩的〇形環3 4。液體燃料供給管 25的前端部25A係貫通蓋體31，經過噴霧器外筒27內（ 線圈彈簧3 6內），從液體燃料槽i 9的上端朝液體燃料槽 19內被插入。 於設置在蓋體3 1之下面側的墊片3 5和設置在液體燃 料槽1 9之上端側的墊片26之間，係介設著作爲按壓構件 的線圈彈簧3 6。藉由該線圏彈簧3 6往下按壓液體燃料槽 19，藉此將液體燃料槽19之底部21的外面（下面）21 b ，朝霧化用空氣導入部37的上面37a按壓。藉此，互相 接觸之底部21的外面（下面）2 1 b與雙流體噴霧噴嘴3 8 (霧化用空氣導入部37)的上面37a形成密著，防止在該 等的接觸面2 1 b、3 7a間產生間隙。 在墊片2 6與液體燃料供給管2 5之間係具有間隙4 5， 經由該間隙4 5讓液體燃料槽1 9的內部空間與液體燃料槽 1 9之外側的噴霧器外筒27的內部空間形成連通。即，液 體燃料槽1 9的上端，係相對於噴霧器外筒2 7的內部空間 被開放，液體燃料槽1 9的內部空間與霧化用空氣流路2 8 的上端部（上流部）形成連通。因此，從空氣流入孔2 9 流入到噴霧器外筒2 7內並流入到霧化用空氣流路2 8的霧 化用空氣4 6的壓力，亦作用於貯留在液體燃料槽1 9內的 25- 200824793 液體燃料24的液面23。 在該雙流體噴霧器1 2中，從液體燃料供給泵經由液 體燃料供給管25而輸送的燃燒裝置燃燒用的液體燃料24 ，若從液體燃料供給管25的前端部25A流出（比較高流 量的情況下會持續性地流出，比較低流量的情況下如第5 圖（a )舉例所示，會間歇性地流出），暫時貯留在液體 燃料槽1 9內。然後，貯留在該液體燃料槽1 9內的液體燃 料24，會從液體燃料槽1 9之底部2 1的液體燃料流出孔 22，朝雙流體合流空間部43持續性地流出。再者，重複 所謂來自液體燃料供給管25之前端部25A的液體燃料間 歇性流出的情況下，液體燃料24從液體燃料供給管2 5的 前端部2 5 A流出時，液面2 3會上昇，接著至液體燃料2 4 從液體燃料供給管2 5的前端部2 5 A流出爲止的期間，液 面2 3會下降的現象，因應於該液位變動，從液體燃料流 出孔2 2流出的液體燃料2 4之流量也會稍微變動，但該流 量變動比習知的流量變動少。 另一方面，從空氣供給泵經由霧化用空氣供給管3 〇 輸送的霧化用空氣46，係從空氣流入孔29流入到噴霧器 外筒27內，且在液體燃料槽19與噴霧器外筒27之間的 霧化用空氣流路2 8流到下方。然後，霧化用空氣46係在 雙流體噴霧噴嘴3 8，流通至霧化用空氣導入部3 7的溝4〇 ’藉此在加快流速的狀態下，被引導到雙流體合流空間部 4 3 ’在該雙流體合流空間部4 3形成旋流，與從液體燃料 槽1 9之液體燃料流出孔22流出的液體燃料24合流（混 -26- 200824793 合）。其結果，液體燃料24會與霧化用空氣46良好混 ’液體燃料24在藉由霧化用空氣46被霧化的狀態下， 霧化用空氣4 6 —同從雙流體噴霧噴嘴38的噴霧孔44, 射到燃燒空間部1 3 (火炎）而燃燒。再者，對已霧化的 體燃料2 4的開始點火係藉由火星塞5 4進行。 在此，針對貯留在液體燃料槽1 9之液體燃料24的 柱頭Η做詳述，該液柱頭η係可由：液體燃料24流通 液體燃料流出孔22時的壓力損失ΔΡ (孔）、從液體燃 流出孔22流出的液體燃料24的動能Ε、以及溝40等 霧化用空氣49的壓力損失ΔΡair，藉由下式而求得。 液柱頭H=壓力損失ΔΡ (孔）+動能E —壓力損 △ Pair 動能E係可由：液體燃料2 4的流速v與液體燃料 的密度P，藉由下式而求得。 動能=p v 2 / 2 而且，液體燃料槽1 9之貯留液體燃料24的液面 之高度，係因經由液體燃料供給管2 5供給到液體燃料 1 9的液體燃料24之流量而變化。即，調整燃料供給 的輸出，液體燃料24之供給流量增多時，液面23升高 液體燃料2 4之供給流量減少時，液面2 3降低。因而， 體燃料槽1 9之高度，係因應於配合特定之液體燃料24 供給流量之調整範圍的液面2 3之高度的變化的高度。 合 與 噴 液 液 到 料 的 失 24 23 槽 泵 液 的 -27- 200824793 而且，雖液體燃料24如第5圖（a )舉例所示，從噴 霧孔44被噴霧成圓錐狀，但此時噴霧的廣度（噴霧角） ，係因溝40的斷面積（即流通至溝40時之霧化用空氣46 的流速）、噴霧孔44之大小（即孔徑）等而定。 其次，針對雙流體噴霧器1 2以外之構造做詳細描述 。如第1、2及3圖所示，以圍繞噴霧器外筒27之周圍 的方式，設有圓筒狀的氣體燃料供給管47。氣體燃料供給 管47係設置成與噴霧器外筒27同心圓狀，氣體燃料供給 管47與噴霧器外筒27之間的圓筒狀之空間，係爲氣體燃 料流路1 4。從氣體燃料供給系統所供給的燃燒裝置燃燒用 之氣體燃料49，係在氣體燃料流路1 4流到下方，且從氣 體燃料流路1 4的下端，噴射到燃燒空間部1 3而燃燒。液 體燃料24與氣體燃料49可各別燃燒，亦可同時燃燒。燃 燒裝置燃燒用的氣體燃料4 9例如可使用甲烷、乙烷、丙 烷、丁烷、二甲醚、氫等，進而在將雙流體噴霧燃燒裝置 1 1作爲重組器之熱源使用的情況下，也可以不使用燃料電 池來發電，而使用朝雙流體噴霧燃燒裝置1 1回流的剩餘 之重組氣（參照第1 3圖）。 燃燒裝置外筒48爲圓筒狀，圍繞氣體燃料供給管47 的周圍。燃燒裝置外筒48與氣體燃料供給管47係設成同 心圓狀，燃燒裝置外筒48與氣體燃料供給管47之間的圓 筒狀之空間，係爲第1燃燒用空氣流路1 5。因而，從燃燒 用空氣供給系統之空氣供給鼓風機被供給的燃燒用空氣5 0 ，係在燃燒用空氣流路1 5流到下方。 -28- 200824793 而且，在燃燒用空氣流路1 5的下端部，即氣體燃料 供給管47的下端部與燃燒裝置外筒48的下端部之間，係 設有平板1 8。平板1 8爲圓環狀的板，分隔成燃燒用空氣 流路1 5與燃燒空間部1 3。再者，此情況下，雖在圖示例 中，平板1 8係設置在大致與雙流體噴霧噴嘴3 8相同的高 度，但並不限於此，例如亦可設置在比雙流體噴霧噴嘴3 8 更高的位置。但平板18的位置升高的話，由於第1圓筒 16及第2圓筒17必須比圖示例還長，因此如圖示例，雖 平板18爲與雙流體噴霧噴嘴38相同的高度，但最不浪費 成本很理想。 平板18的內周面係藉由焊接等的固定手段被固定在 氣體燃料供給管47的外周面，另一方面，在平板1 8的外 周面係形成有複數個（圖示例爲四個）突起51’該等之突 起5 1的前端面係藉由焊接等的固定手段被固定在燃燒裝 置外筒48的內周面。因此，氣體燃料供給管47至燃燒裝 置外筒48的附近，雖藉由平板1 8閉塞，但平板1 8的外 周側係藉由突起51，在平板18的外周面與燃燒裝置外筒 48的內周面48a之間形成有間隙，該等之間隙係爲燃燒用 空氣流通孔52。即，燃燒用空氣流路1 5與燃燒空間部1 3 ，係藉由該等之燃燒用空氣流通孔52連通。 因而，燃燒用空氣5 0在燃燒用空氣流路1 5流到下方 之後，被平板1 8遮擋，被引導到平板1 8的外周側’藉此 遠離雙流體噴霧噴嘴3 8 (噴霧孔44 )，流通到燃燒用空 氣流通孔52，流入燃燒空間部1 3。 -29- 200824793 並且，在平板18的下面’係藉由焊接等的固 ，固定有：朝下延伸的外側之第1圓筒1 6、和朝下 內側之弟2圓同1 7。弟1圓同1 6係位置在比燃燒 流通孔5 2更內側，配置成與燃燒裝置外筒4 8同心 而且，燃燒裝置外筒48與第1圓筒16之間的圓筒 間，則爲第2燃燒用空氣流路5 3。 因而，在第1燃燒用空氣流路1 5流到下方並 燒用空氣流通孔52的燃燒用空氣50，係在第2燃 氣流路5 3進一步流到下方。而且，燃燒用空氣5 0 燃燒用空氣流路5 3的下端流出，擴散到整個燃燒 1 3。因此，從燃燒用空氣流路5 3流出的一部份燃 氣5 0 (例如整體的3 %左右），則朝向從雙流體噴· (雙流體噴霧噴嘴38)被噴霧的液體燃料24，在 1 8遠離下方的位置被供給（混合），應用於該液 24的燃燒。此時被混合到液體燃料24的燃燒用空_ 量，係例如設定成空氣比之平均爲1 .5以下。而且 燒用空氣流路53所流出之剩下的燃燒用空氣50 ( 體的約7%左右），進一步流到下方，會與因前述 產生的燃燒排放氣體混合。或者，產生大量的燃燒 體。 再者，設置第1圓筒16之目的，係讓一部份 用空氣50延遲供給到霧化液體燃料24，即在自平毛 離下方的位置，供給到霧化液體燃料24，藉此就能 炎接觸到平板1 8，使煤灰附著在平板1 8。因此，） 定手段 延伸的 用空氣 圓狀。 狀之空 通過燃 燒用空 ，係從 空間部 燒用空 _器12 自平板 體燃料 ^ 50的 ，從燃 例如整 燃燒而 排放氣 的燃燒 5 1 8遠 防止火 _ 1圓 -30- 200824793 筒16的長度，即第1圓筒16的前端位置（下端位置）’ 係與平板18之大小（雙流體噴霧噴嘴38的噴霧孔44至 燃燒用空氣流通孔52的距離）的關係做適當設定即可。 就是，亦可不設第1圓筒16，只設置平板18與平板 1 8之外周部的燃燒用空氣流通孔52，由於燃燒用空氣流 通孔5 1係自噴霧孔44被分開，因此通過燃燒用空氣流通 孔51的一部份燃燒用空氣50，係在自平板18遠離下方的 位置，被供給到霧化液體燃料24。而且，噴霧孔44至燃 燒用空氣流通孔52的距離愈長，部份燃燒用空氣50被供 給到霧化液體燃料24的位置，就愈離開平板1 8。再者， 加大平板1 8且噴霧孔44至燃燒用空氣流通孔的距離愈長 ，雙流體噴霧燃燒裝置U的直徑愈大。 另一方面，噴霧孔44至燃燒用空氣流通孔52的距離 因雙流體噴霧燃燒裝置1 1之大小的限制等而受限的情況 下，只設置平板1 8與燃燒用空氣流通孔5 1，並無法充分 地使得部份燃燒用空氣5 0延遲供給到霧化液體燃料24， 此時如圖示例，設置第1圓筒1 6非常有效。此情況下， 噴霧孔44至燃燒用空氣流通孔52的距離愈短，第1圓筒 16愈朝下延長即可。但爲了避免第1圓筒16與已被噴霧 的液體燃料24之干擾，第1圓筒1 6必須位在已被噴霧的 液體燃料24之外形部24A的外側（上側）。即，第1圓 筒1 6的前端（下端）只能延長到已被噴霧的液體燃料24 的外形部24A。 再者，噴霧孔44至燃燒用空氣流通孔52的距離縮短 -31 - 200824793 ，由於第1圓筒1 6的設置位置也很靠近噴霧孔44 平板18至霧化液體燃料24的外形部24A的距離亦 緣故，第1圓筒16不能太長。因而，也考慮此種 只要適當決定噴霧孔44至燃燒用空氣流通孔5 2的 第1圓筒16的長度（亦包含要不要第1圓筒16)即 第2圓筒17係位置在第1圓筒16的內側，與 筒1 6同心圓狀的被配設。再者，設置第2圓筒1 7 ，係防止在平板1 8的附近產生霧化液體燃料24的 對流），藉此防止火炎接觸到平板1 8，使煤灰附著 18。因此第2圓筒17儘量朝下延長爲佳。但爲了避 圓筒17與霧化液體燃料24之干擾，第2圓筒17 (下端）必須位在霧化液體燃料24之外形部24A (上側）。即，第2圓筒1 7的前端（下端）也只 到霧化液體燃料24的外形部24A。 例如，如第1圖所記載，雙流體噴霧噴嘴3 8 孔44至第2圓筒17的距離爲L1，與已被噴霧的 料24的外形部24A之水平線的角度爲θ的話，雙 霧噴嘴38(噴霧孔44)的前端（下端）至第2圓信 前端（下端）之長度 L2，必須滿足 0<L2 S Lltan0 ，第2圓筒17的整個長度，係爲將平板18的下面 體噴霧噴嘴38(噴霧孔44)的前端（下端）之長 到L2。再者，此種條件，連有關雙流體噴霧噴嘴 霧孔44 )的前端（下端）至第2圓筒〗7的前端（ 之長度和第1圓筒16的整個長度亦相同。雙流體 ，因此 變短的 限制， 距離與 丨可。 第1圓 之目的 積水（ 在平板 免第2 的前端 的外側 能延長 的噴霧 液體燃 流體噴 g 17的 。再者 至雙流 度加長 38 (噴 下端） 噴霧噴 -32- 200824793 嘴38的噴霧孔44至第2圚筒16的距離，係例如：噴霧 孔44之孔徑（例如1mm左右）的50倍以上或60倍以上 的距離。 如上，若藉由本實施形態例1的雙流體噴霧燃燒裝置 1 1，具有：圓筒狀的側部20和設置在該側部20之下端的 底部21，且具備貯留著從液體燃料供給管25被供給的液 體燃料24，並且位在比該已貯留之液體燃料24之液面更 下方，使前述已貯留的液體燃料24，從開設在底部2 1的 液體燃料流出孔22流出之構造的液體燃料槽1 9，以霧化 用空氣46來霧化從該液體燃料槽1 9之液體燃料流出孔22 流出的液體燃料24並使其燃燒的構造，藉此液體燃料24 間歇性地從液體燃料供給管24供給到液體燃料槽1 9之時 ，也會從液體燃料槽1 9的液體燃料流出孔22，持續性地 流出貯留在液體燃料槽1 9的液體燃料。即，液體燃料供 給系統之泵的供給流量降低，從液體燃料供給管2 5往液 體燃料槽1 9間歇性地供給液體24之時，貯留在液體燃料 槽19內之液體燃料24的液面23稍微上下變動，來自液 體燃料流出孔22之液體燃料24的流出流量是稍微變動的 程度，液體燃料供給流量的變動並不如習知那樣的大。因 此，當液體燃料供給流量很低時，也能形成液體燃料24 的穩定供給，並且變得很容易確立穩定燃燒，不會有引起 未燃排氣之產生和失火之虞。 而且，若藉由本實施形態例1的雙流體噴霧燃燒裝置 1 1，由於從液體燃料流出孔22流出並流入到雙流體合流 -33- 200824793 空間部43的液體燃料22，是構成與在霧化用空氣流路 流到下方之後，在霧化用空氣導入部3 7流到溝40被引 到雙流體合流空間部43的霧化用空氣，在雙流體合流 間部43合流之後，與該霧化用空氣一同從噴霧孔44被 霧的構造，因此，液體燃料24會與因溝而加快流速（ 平方向的速度成份增加）的霧化用空氣46在雙流體合 空氣部43良好混合之後，從雙流體噴霧噴嘴3 8的噴霧 44被噴射。因此，與未設置雙流體合流空間部43和溝 的情形相比，由於液體燃料24之噴霧的廣角變大，液 燃料24確實的被霧化，因此液體燃料24的燃燒性提昇 而且，若藉由本實施形態例1的的雙流體噴霧燃燒 置11，由於霧化用空氣導入部37的溝4〇，是在上面視 ，形成沿著雙流體合流空間部43之圓周的接線方向， 此在雙流體合流空間部43，係霧化用空氣46爲旋流而 液體燃料24混合，因此液體燃料24與霧化用空氣46， 更確實的混合。因此，能更確實的霧化從雙流體噴霧噴 38的噴霧孔44被噴射的液體燃料24，進一步提昇該液 燃料24的燃燒性。 並且，若藉由本實施形態例1的雙流體噴霧燃燒裝 1 1，由於前述霧化用氣體導入部3 7的溝44，係以在前 雙流體合流空間部43之中心軸周呈旋轉對稱之位置關 的方式形成複數個，因此，從雙流體噴霧噴嘴3 8的噴 孔44被噴霧的液體燃料24之周方向的分佈量變均勻， 能提昇該液體燃料24的燃燒性。 2 8 導 空 噴 水 流 孔 40 am 體 〇 裝 之 藉 與 會 嘴 體 置 述 係 霧 並 -34- 200824793 並且，若藉由本實施形態例1的雙流體噴霧燃燒裝置 11，由於藉由具備往下按壓液體燃料槽19的線圈彈簧36 ，使液體燃料槽19之底部21，形成朝雙流體噴霧噴嘴38 的霧化用空氣導入部3 7按壓而密著的構造，因此燃料槽 19之底部21的下面21b與霧化用空氣導入部37的上面 3 7 a密著，藉此就能防止在該等之接觸面2 1 b、3 7 a間形成 間隙。因此’能防止霧化用空氣46流到溝40以外的部分 ，充分發揮因溝40所致的廣大區域之噴霧效果。 並且，若藉由本實施形態例1的雙流體噴霧燃料裝置 1 1，由於雙流體合流空間部43爲倒圓錐狀，在該倒圓錐 狀之空間部43的頂點位置形成有噴霧孔44，因此能更確 實的進行雙流體合流空間部43之液體燃料24與霧化用空 氣46的混合。因此，能更確實的霧化從噴霧孔44所噴霧 的液體燃料24，進一步提昇液體燃料24的燃燒性。 並且，若藉由本實施形態例1的雙流體噴霧燃料裝置 11，由於具備形成在噴霧器外筒27與圍繞噴霧器外筒27 之周圍的氣體燃料供給管47之間的圓筒狀氣體燃料流路 1 4，氣體燃料49係構成在經氣體燃料流路1 4流到下方， 從氣體燃料流路1 4之下端被噴射而燃燒，藉此從圓筒狀 之氣體燃料流路1 4被噴射的氣體燃料49會均勻的形成在 周方向，因此在燃燒性提昇，且例如液體燃料24之供給 較少時等，發揮因氣體燃料49所致的保炎效果。 並且，若藉由本實施形態例1的雙流體噴霧燃料裝置 11，由於液體燃料供給管25的前端部25A，是連接在液 -35- 200824793 體燃料槽1 9之側部20的內周面20a的情況下，當來自液 體燃料供給管25之液體燃料24的流出量較少時，液體燃 料亦會輸送到內周面20a而流掉，因此能令來自液體燃料 流出孔22的液體燃料24更穩定的流出。亦即，如果液體 燃料24成爲粒狀而掉落下來，在貯留於液體燃料槽1 9內 的液體燃料24之液面23產成較大的變動，且液面非常低 的情況下，雖亦認爲會暫時露出液體燃料流出孔22，液體 燃料24的流出中斷，但若液體燃料24輸送流落到液體燃 料槽1 9的內周面20a，就能防止相關之缺點的產生。 進而，若藉由本實施形態例1的雙流體噴霧燃燒裝置 1 1，由於在前述燃燒用空氣流路‘ 1 5流到下方的燃燒用空 氣5 0，是利用平板1 8遮擋，平板1 8引導到平板1 8之外 周側，藉此遠離雙流體噴霧噴嘴3 8，通過燃燒用空氣流通 孔5 2，流入燃燒空間部1 3，因此在燃燒空間部1 3僅燃燒 用空氣50的一部分，會與從雙流體噴射噴嘴38被噴霧的 液體燃料24混合，應用於該液體燃料24的燃燒，剩餘的 燃燒用空氣5 0，會進一步流到下方，與因前述燃燒而產生 的燃燒排氣混合。因此，藉由一次（一段）之燃燒用空氣 供給，就能達成燃燒用空氣5 0與液體燃料24的適度混合 ’就不會過度冷卻火炎，使其產生大量的燃燒排氣。即， 能以簡易的構造產生大量的燃燒排氣，且可實現亦不會有 引起未燃氣體之產生和失火之虞的雙流體噴霧燃燒裝置等 之燃燒裝置。 並且由於平板1 8所致，使燃燒用空氣5 〇在離開雙流 -36- 200824793 體噴霧噴嘴3 8的位置流入燃燒空間部1 3，因此一部份的 燃燒用空氣50被供給到燃料的位置，能自平板18遠離下 方。因而，火炎的位置也會自平板1 8遠離下方，就能防 止煤灰附著在平板1 8的下面。附著在平板1 8之下面的煤 灰量太多的話，雖有可能產生因煤灰所致之雙流體噴霧噴 嘴3 8的堵塞或煤灰吸收火炎的輻射熱導致雙流體噴霧器 1 2異常加熱等的缺點，但如上所述防止煤灰附著在平板 1 8的下面，藉此就能防患相關缺點的產生。 並且，若藉由本實施形態例1的雙流體噴霧燃燒裝置 1 1，由於設置從平板1 8之下面朝下方延伸的燃燒用空氣 供給延遲用的第1圓筒16，並在該第1圓筒16與燃燒裝 置外筒4 8之間形成連通至燃燒用空氣流通孔5 2的圓筒狀 之燃燒用空氣流路53，通過燃燒用空氣流通孔52的燃燒 用空氣5 0，是構成在燃燒用空氣流路5 3流到下方之後， 從燃燒用空氣流路5 3之下端，流入燃燒空間部1 3，因此 能使一部份的燃燒用空氣5 0，延遲供給到從雙流體噴霧噴 嘴3 8被噴霧的液體燃料24。亦即，一部份的燃燒用空氣 5〇被供給到液體燃料24的位置，能自平板1 8遠離下方。 因而，火炎的位置也會自平板18遠離下方，就能防止煤 灰附著在平板18的下面。 再者，雖然所謂該一部份的燃燒用空氣5 0被供給到 液體燃料2 4的位置，自平板1 8遠離下方的作用效果，即 使只設置如上述的平板1 8也能獲得，但如本實施形態例1 ，若設置燃燒用空氣供給延遲用的第1圓筒1 6，一部份的 37- 200824793 燃燒用空氣50被供給到液體燃料24的位置，就能更確實 的自平板18遠離下方。 並且，因雙流體噴霧燃燒裝置1 1之大小的限制等， 平板18不能太大，雙流體噴霧噴嘴38至燃燒用空氣流通 孔52的距離不夠充分的情況下，供給到液體燃料24的一 部份之燃燒用空氣50的量過多，會有過度冷卻火炎之虞 。對此如本實施形態例1，若設置燃燒用空氣供給延遲用 的第1圓筒1 6，不但能將一部份的燃燒用空氣5 0供給到 液體燃料24的位置，自平板1 8遠離下方，此時亦能減低 供給到液體燃料24的一部份之燃燒用空氣5 0的量，形成 適當的量。因而，亦由相關的觀點來看，設置如本實施形 態例1的第1圓筒16很有效，也能藉由設置第1圓筒16 來縮小平板1 8，達到雙流體噴霧燃燒裝置11的小型化。 並且，若藉由本實施形態例1的雙流體噴霧燃燒裝置 1 1，將從平板1 8之下面朝下方延伸的防積水用之第2圓 筒17，設置在燃燒用空氣供給延遲用之第1圓筒16的內 側，藉此就能藉由防積水用的第2圓筒1 7，來防止在平板 1 8之下面附近產生液體燃料24的積水（對流）。因此， 能防止在平板1 8之下面附近積水的液體燃料24也產生引 燃，煤灰附著在平板1 8的下面。 並且，若藉由本實施形態例1的雙流體噴霧燃燒裝置 1 1，由於藉由燃燒裝置外筒48圍繞火炎，藉此火炎（所 噴霧的液體燃料24 )與燃燒用空氣5 0就能在燃燒空間部 1 3良好混合，因此燃燒性提升。 -38 - 200824793 <實施形態例2> 第6圖（a )是表示有關本發明之實施形態例2之雙 流體噴霧燃燒裝置的雙流體噴霧器之下側部分之構造的縱 ^ 剖面圖，第6圖（b)係抽出配備在前述雙流體噴霧器之 • 雙流體噴霧噴嘴所示的俯視圖（第6圖（a )之E箭頭方 向視圖）。 % 如第6圖所示，在本實施形態例2之雙流體噴霧器1 2 的雙流體噴霧噴嘴38，係在霧化用空氣導入部37之周方 向的四處形成有溝（裂縫）61。該等之溝61係爲衝突型 ，形成沿著上面視之爲圓形狀的雙流體合流空間部43之 徑向，且在雙流體合流空間部43之中心軸（在圖示例中 係噴霧孔44的中心軸）周爲旋轉對稱（於周方向呈等間 隔）的位置關係。 在該雙流體噴霧器21，係將在霧化用空氣流路28流 ® 到下方的霧化用空氣46，在雙流體噴霧噴嘴3 8，流通到 霧化用空氣導入部3 7的溝6 1，藉此在加快流速的狀態下 ，被引導到雙流體合流空間部4 3，在該雙流體合流空間部 43與從液體燃料槽1 9之液體燃料流出孔22流出的液體燃 料24衝突而合流（混合）。其結果，液體燃料24會與霧 化用空氣46良好混合，液體燃料24在藉由霧化用空氣46 被霧化的狀態下，與霧化用空氣4 6 —同從雙流體噴霧噴 嘴3 8的噴霧孔44，噴射到燃燒空間部〗3。 再者’第6圖的雙流體噴霧器12的其他部分的構造 -39- 200824793 ，係與第4圖的雙流體噴霧器12相同。並且，連有關本 實施形態例2之雙流體噴霧燃燒裝置之雙流體噴霧器以外 的部分的構造，均爲與第1圖〜第3圖的雙流體噴霧燃燒 裝置1 1相同。 ^ 若藉由本實施形態例2的雙流體噴霧燃燒裝置，可得 ^ 到如下的作用效果，並且，其他也能得到與上述實施形態 例1相同的作用效果。 φ 即，若藉由本實施形態例2的的雙流體噴霧燃燒裝置 ，由於霧化用空氣導入部3 7的溝61，是在上面視之，形 成沿著雙流體合流空間部43的徑向，藉此在雙流體合流 空間部43，霧化用空氣46形成衝突到液體燃料24而混合 於液體燃料24，因此液體燃料24與霧化用空氣46，會更 確實的混合。因此，能更確實的霧化從雙流體噴霧噴嘴3 8 的噴霧孔44被噴射的液體燃料24，進一步提昇該液體燃 料24的燃燒性。 • 並且，由於霧化用氣體導入部3 7的溝6 1，係以在雙 流體合流空間部43之中心軸周呈旋轉對稱之位置關係的 * 方式形成複數個，因此，從雙流體噴霧噴嘴3 8的噴霧孔 ^ 44被噴霧的液體燃料24之周方向的分佈量變均勻，並能 提昇該液體燃料24的燃燒性。 <實施形態例3> · 第7圖（a )是表示有關本發明之實施形態例3之雙 流體噴霧燃燒裝置的雙流體噴霧器之下側部分之構造的縱 -40- 200824793 剖面圖，第7圖（b )係抽出配備在前述雙流體噴霧器之 雙流體噴霧噴嘴所示的俯視圖（第7圖（a )之F箭頭方 向視圖）。 如第7圖所示，在本實施形態例3的雙流體噴霧1 2， 液體燃料槽19之底部21的內面（上面）21 a爲尖細（倒 圓錐狀）的錐面，在中心（倒圓錐狀之錐面的頂點位置） 形成有微細的液體燃料流出孔22。而且，液體燃料槽1 9 之底面21的外面（下面）2 1 b，係外側部分2 1 b-1爲尖細 (倒圓錐狀）的錐面，內側部分21b-2爲圓形狀的水平面 〇 另一方面，雙流體噴霧噴嘴38的霧化用空氣導入部 3 7係形成圓環狀，且內周面3 7b爲尖細（倒圓錐狀）的錐 面。而且，液體燃料槽19，係在以其底部21之下面21 b 的外側部分2 1 b-1 (錐面部）嵌入到霧化用空氣導入部3 7 的內周面37b (錐面部）之方式抵接的狀態下，設置在霧 化用空氣導入部3 7上。此情況下，藉由線圈彈簧3 6 (參 照第4圖）往下按壓液體燃料槽丨9，藉此液體燃料槽1 9 之底部2 1的下面2 1 b之外側部分2 1 b-1 (錐面部），是朝 霧化用空氣導入部37的內周面37b (錐面部）按壓而密著 ’防止在該等之接觸面21b-l、37b間產生間隙。 噴嘴本體部39，係在其中央部形成有倒圓錐狀的空間 部（凹部）42，且在其中心（倒圓錐狀之空間部42的頂 點位置）形成有微細的噴霧孔44。霧化用空氣導入部3 7 的空間部4 1與噴嘴本體部3 9的空間部42係相連接，該 -41 - 200824793 些空間部4 1、42是構成雙流體合流空間部43。即，雙流 體合流空間部43係平面視之（上面視之）爲圓形，其直 徑爲隨著朝向噴霧孔44而緩緩縮小的尖細構造。在霧化 用空氣導入部37，係在其周方向的兩處形成有溝（裂縫） ^ 40。該等之溝40係爲與第5圖之溝40相同的廻旋型，在 ^ 上面視之，形成沿著雙流體合流空間部4 3之圓周的接線 方向，且互相在雙流體合流空間部43之中心軸周爲旋轉 φ 對稱的位置關係（於周方向呈等間隔）。再者，形成在霧 化用空氣導入部3 7的溝並不限於廻旋型，也可爲與第6 圖相同的衝突型。 第7圖的雙流體噴霧器12的其他部分的構造，係與 第4圖的雙流體噴霧器12相同。並且，連有關本實施形 態例3之雙流體噴霧燃燒裝置之雙流體噴霧器以外的部分 的構成，均爲與第1圖〜第3圖的雙流體噴霧燃燒裝置11 相同。 Φ 若藉由本實施形態例3的雙流體噴霧燃燒裝置，可得 到如下的作用效果，並且，其他也能得到與上述實施形態 例1、2相同的作用效果。 ^ 即，若藉由本實施形態例3的雙流體噴霧燃燒裝置， 由於液體燃料槽1 9，係在以液體燃料槽1 9之錐面部（底 面21之下面21b的外側部分21b-l)被嵌入到霧化用氣體 導入部3 7的錐面部（內周面3 7 b )的方式來抵接的狀態下 ，設置在霧化用氣體入部3 7上，因此液體燃料槽1 9與雙 流體噴霧噴嘴3 8的中心軸很容易對合。因而，由於液體 -42- 200824793 燃料糟19不是單靠一邊，是在周方向均勻的形成霧化用 氣體流路28的寬度，就能均勻的在前述周方向形成霧化 用氣體流路28的霧化用氣體46的流動，因此能確保來自 雙流體噴霧噴嘴38之噴霧孔44的液體燃料24之噴霧的 對稱性（即火炎的對稱性）。 並且，在本實施形態例3的雙流體噴霧燃燒裝置，藉 由線圈彈簧36(參照第4圖）往下按壓液體燃料槽19, 藉此將液體燃料槽19的底部21朝雙流體噴霧噴嘴38的 霧化用空氣導入部3 7按壓，使燃料槽1 9之底部2 1的錐 面部（外側部分2 1 b-1 )與霧化用空氣導入部3 7的錐面部 (內周面3 7b )形成密著，藉此就能防止在該等之接觸面 21 b-1、37b間形成間隙。因此，能防止霧化用空氣46流 到溝40以外的部分，充分發揮因溝40所致的廣大區域之 噴霧效果。 <實施形態例4> 第8圖（a )是表示有關本發明之實施形態例4之雙 流體噴霧燃燒裝置的雙流體噴霧器之下側部分之構造的縱 剖面圖（第8圖（b )之G-G線端的縱剖面圖），第8圖 (b)是抽出配備在前述雙流體噴霧器之液體燃料槽所示 的仰視圖（第8圖（a)之Η箭頭方向視圖），第8圖（c )是第8圖（b)之I箭頭方向視圖，第8圖（d)是第8 圖（a )之J-J線端的橫剖面圖。 如第8圖所示，在本實施形態例4的雙流體噴霧丨2， 43- 200824793 液體燃料槽19之底部21的內面（上面）21a爲尖細（ 圓錐狀）的錐面，在中心（倒圓錐狀之錐面的頂點位置 形成有微細的液體燃料流出孔22。而且，液體燃料槽 之底面21的外面（下面）21 b，係外側部分2 1 b-1爲尖 (倒圓錐狀）的錐面，內側部分2 lb-2爲圓形狀的水平 〇 另一方面，雙流體噴霧噴嘴38並不具有霧化用空 導入部（參照第7圖），與噴霧器外筒27 —體形成在 霧化器外筒27的下端（亦可以焊接等來固定另外一體 )。雙流體噴霧噴嘴38，係內面（上面）38a爲尖細（ 圓錐狀）的錐面。因此，液體燃料槽19，係在以其底 2 1之下面2 1 b的外側部分2 1 b-1 (錐面部）嵌入到雙流 噴霧噴嘴3 8的內面3 8 a (錐面部）之方式抵接的狀態下 設置在雙流體噴霧噴嘴3 8上。此情況下，藉由線圈彈 3 6 (參照第4圖）往下按壓液體燃料槽1 9，藉此液體燃 槽19之底部21的下面21b之外側部分2ib_1(錐面部 ，是朝雙流體噴霧噴嘴38的內面38a (錐面部）按壓而 著，防止在該等之接觸面21b_l、38b間產生間隙。 並且，藉由錐形構造的內面3 8 a形成在雙流體噴霧 嘴3 8之中央邰的倒圓錐狀之空間部，爲雙流體合流空 邰4 3。微細的噴霧孔4 4，係形成該雙流體合流空間部 的中心（倒圓錐狀之空間部4 3的頂點位置），連通至 流體合流空間部4 3。即，雙流體合流空間部4 3係平面 之（上面視之）爲圓形，其直徑爲隨著朝向噴霧孔4 4 倒 ) 19 細 面 氣 噴 者 倒 部 體 J 簧 料 ) 密 噴 間 43 雙 視 而 -44- 200824793 緩緩縮小的尖細構造。 而且，在液體燃料槽19之底部21的下面2丨b側，係 在其周方向的兩處形成有溝（裂縫）71。該等之溝71係 爲廻旋型，在上面視之，形成沿著雙流體合流空間部43 之圓周的接線方向，且互相在雙流體合流空間部4 3之中 心軸周爲旋轉對稱的位置關係（於周方向呈等間隔）。 因而’在霧化用空氣流路28流到下方的霧化用空氣 46，係在液體燃料槽1 9之底部21，流通到溝71，藉此在 加快流速的狀態下，被引導到雙流體合流空間部43，在該 雙流體合流空間部4 3形成fe流，與從液體燃料槽1 9之液 體燃料流出孔22所流出的液體燃料24合流（混合）。g 結果，液體燃料2 4會與霧化用空氣4 6良好混合，液體燃 料2 4在藉由霧化用空氣4 6被霧化的狀態下，與霧化用空 氣4 6 —同從雙流體噴霧噴嘴3 8的噴霧孔4 4，唷射到燃燒 空間部1 3。 再者’第8圖的雙流體噴霧器12的其他部分的構造 ，係與第4圖的雙流體噴霧器12相同。並且，連有關本 實施形態例4之雙流體噴霧燃燒裝置之雙流體噴霧器以外 的部分之構造，均爲與第1圖〜第3圖的雙流體晴霧燃燒 裝置1 1相同。 若藉由本實施形態例3的雙流體噴霧燃燒裝置，可得 到如下的作用效果’並且’其他也能得到與上述實施形態 例1相同的作用效果。 即’若藉由本實施形態例4的雙流體噴霧燃燒裝置， -45- 200824793 由於形成從液體燃料流出孔44流出並流入到雙流體合流 空間部43的液體燃料24，在霧化用空氣流路28流到下方 之後’與在液體燃料槽19之底面21流到溝71而被引導 到雙流體合流空間部43的霧化用空氣46在雙流體空間部 43合流之後，與該霧化用空氣46 —同從噴霧孔44被噴霧 " 的構造’藉此’液體燃料2 4與因溝7 1加快流速（水平方 向的速度成份增加）的霧化用空氣46在雙流體合流空氣 • 部43良好的被混合’從噴霧孔44被噴霧。因此，與未設 置雙流體合流空間部43和溝71的情形相比，由於液體燃 料2 4之噴霧的廣角變大，液體燃料2 *確實的被霧化，因 此液體燃料24的燃燒性提昇。 進而，由於液體燃料槽1 9，係在液體燃料槽i 9之錐 面部（底部2 1之下面2 1 b的外側部分2 1 b-1 )嵌入到雙流 體噴霧噴嘴3 8的錐面部（內面3 8 a )之方式而抵接的狀態 下’ s受置在雙流體噴霧噴嘴38上，因此，液體燃料槽B Φ 與雙流體噴霧噴嘴38的中心軸很容易對合。因而，由於 液體燃料糟1 9不是單靠一邊，是在周方向均勻的形成霧 化用空氣流路28的寬度，就能均勻的在前述周方向形成 霧化用空氣流路2 8的霧化用氣體46的流動，因此能確保 來自雙流體噴霧噴嘴38之噴霧孔44的液體燃料24之噴 霧的對稱性（即火炎的對稱性）。 而且’由於液體燃料槽i 9之底部21的溝71，是在上 面視之’形成沿著雙流體合流空間部43之圓周的接線方 向，藉此在雙流體合流空間部43，係霧化用空氣46爲旋 -46- 200824793 流而與液體燃料24混合，因此液體燃料24與霧化用空氣 4 6，會更確實的混合。因此，能更確實的霧化從雙流體噴 霧噴嘴38的噴霧孔44被噴射的液體燃料24，進一步提昇 該液體燃料2 4的燃燒性。 並且，由於液體燃料槽19之底部21的溝71，係以在 雙流體合流空間部43之中心軸周呈旋轉對稱之位置關係 的方式形成複數個，因此，從雙流體噴霧噴嘴38的噴霧 孔44被噴霧的液體燃料24之周方向的分佈量變均勻，並 能提昇該液體燃料24的燃燒性。 並且，在本實施形態例4的雙流體噴霧燃燒裝置，藉 由線圈彈簧3 6 (參照第4圖）往下按壓液體燃料槽1 9， 藉此將液體燃料槽1 9的底部2 1朝雙流體噴霧噴嘴3 8按 壓，使燃料槽1 9之底部2 1的錐面部（外側部分2 1 b-1 ) 與雙流體噴霧噴嘴38的錐面部（內面38a)形成密著，藉 此就能防止在該等之接觸面21b-l、38a間形成間隙。因 此，能防止霧化用空氣4 6流到溝71以外的部分，充分發 揮因溝7 1所致的廣大區域之噴霧效果。 <實施形態例5> 第9圖（a)是表示有關本發明之實施形態例5之雙 流體噴霧燃燒裝置的雙流體噴霧器之下側部分之構造的縱 剖面圖，（第9圖（b )之K-K線端的剖面圖），第9圖 (b)是抽出配備在前述雙流體噴霧器之液體燃料槽所示 的仰視圖（第9圖（a )之L箭頭方向視圖），第9圖（c -47- 200824793 )是第9圖（a)之M-M線端的橫剖面圖。 如第9圖所示，在本實施形態例5的雙流體噴霧12， 液體燃料槽19之底部21的內面（上面）21a爲尖細（倒 圓錐狀）的錐面，在中心（倒圓錐狀之錐面的頂點位置） 形成有微細的液體燃料流出孔22。而且，液體燃料槽1 9 之底面21的外面（下面）2 1 b，係外側部分2 1 b-1爲尖細 (倒圓錐狀）的錐面，內側部分2 lb-2爲圓形狀的水平面 〇 另一方面，雙流體噴霧噴嘴38並不具有霧化用空氣 導入部（參照第7圖），與噴霧器外筒27 —體形成在噴 霧化器外筒2 7的下端（亦可以焊接等來固定另外一體者 )。雙流體噴霧噴嘴3 8，係內面（上面）3 8a爲尖細（倒 圓錐狀）的錐面。因此， 液體燃料槽1 9，係在以其底部 2 1之下面2 1 b的外側部分2 1 b-1 (錐面部）嵌入到雙流體 噴霧噴嘴38的內面38a (錐面部）之方式抵接的狀態下， 設置在雙流體噴霧噴嘴3 8之上。此情況下，藉由線圈彈 簧3 6 (參照第4圖）往下按壓液體燃料槽1 9，藉此液體 燃料槽1 9之底部2 1的下面2 1 b之外側部分2 1 b -1 (錐面 部），是朝雙流體噴霧噴嘴38的內面38a (錐面部）按壓 而密著，防止在該等之接觸面2 1 b · 1、3 8 b間產生間隙。 並且，藉由錐形構造的內面3 8 a形成在雙流體噴霧噴 嘴3 8之中央部的倒圓錐狀之空間，爲雙流體合流空間部 4 3。微細的噴霧孔4 4，係形成該雙流體合流空間部4 3的 中心（倒圓錐狀之空間部4 3的頂點位置），連通至雙流 48- 200824793 體合流空間部43。即，雙流體合流空間部43係平面視之 (上面視之）爲圓形，其直徑爲隨著朝向噴霧孔4 4而緩 緩縮小的尖細構造。 而且，在液體燃料槽19之底部21的下面2 i b側，係 在其周方向的四處形成有溝（裂縫）8 1。該等之溝8 1係 爲衝突型，形成在上面視之，沿著雙流體合流空間部43 之徑向，且在雙流體合流空間部43之中心軸周爲旋轉對 稱的位置關係（於周方向呈等間隔）。 因而，在霧化用空氣流路2 8流到下方的霧化用空氣 4 6，係在液體燃料槽1 9之底部2 1，流通至溝8 1，藉此在 加快流速的狀態下，被引導到雙流體合流空間部43，在該 雙流體合流空間部43與從液體燃料槽丨9之液體燃料流出 孔22流出的液體燃料24衝突而合流（混合）。其結果， 液體燃料2 4會與霧化用空氣4 6良好混合，液體燃料2 4 在藉由霧化用空氣46被霧化的狀態下，與霧化用空氣46 一同從雙流體噴霧噴嘴38的噴霧孔44，噴射到燃燒空間 部13。 再者，第9圖的雙流體噴霧器12的其他部分的構造 ，係與第4圖的雙流體噴霧器1 2相同。並且，連有關本 實施形態例5之雙流體噴霧燃燒裝置之雙流體噴霧器以外 的部分的構造’均爲與第1圖〜第3圖的雙流體噴霧燃燒 裝置1 1相同。 若藉由本實施形態例5的雙流體噴霧燃燒裝置，可得 到如下的作用效果，並且，其他也能得到與上述實施形態 -49- 200824793 例1相同的作用效果。 即，若藉由本實施形態例5的雙流體噴霧燃燒裝置， 由於形成從液體燃料流出孔4 4流出並流入到雙流體合流 空間部43的液體燃料24，在霧化用空氣流路28流到下方 之後，與在液體燃料槽1 9之底面21流到溝8 1被引導到 雙流體合流空間部43的霧化用空氣46，在雙流體空間部 4 3合流之後，與該霧化用空氣4 6 —同從噴霧孔4 4被噴霧 的構造，藉此，液體燃料24會與因溝81而加快流速（水 平方向的速度成份增加）的霧化用空氣46在雙流體合流 空氣部4 3良好混合，從噴霧孔4 4被噴霧。因此，與未設 置雙流體合流空間部43和溝81的情形相比，由於液體燃 料24之噴霧的廣角變大，液體燃料24確實的被霧化，因 此液體燃料24的燃燒性提昇。 進而，由於液體燃料槽1 9，係在以液體燃料槽1 9之 錐面部（底部2 1之下面2 1 b的外側部分2 1 b-1 )嵌入到雙 流體噴霧噴嘴3 8的錐面部（內面3 8a )之方式抵接的狀態 下，設置在雙流體噴霧噴嘴3 8上，因此，液體燃料槽1 9 與雙流體噴霧噴嘴3 8的中心軸很容易對合。因而，由於 液體燃料糟1 9不是單靠一邊，在周方向均勻的形成霧化 用空氣流路28的寬度，就能均勻的在前述周方向形成霧 化用空氣流路2 8的霧化用氣體46的流動，因此能確保來 自雙流體噴霧噴嘴3 8之噴霧孔44的液體燃料24之噴霧 的對稱性（即火炎的對稱性）。 而且，由於液體燃料槽1 9之底部21的溝81，是以在 -50- 200824793 上面視之’沿著雙流體合流空間部43之圓周的接線方向 之方式所形成’藉此在雙流體合流空間部43，係霧化用空 氣46形成旋流與液體燃料24混合，因此液體燃料24與 霧化用空氣46，會更確實的混合。因此，能更確實的霧化 從雙流體噴霧噴嘴3 8的噴霧孔44被噴射的液體燃料2 4， 進一步提昇該液體燃料2 4的燃燒性。 並且，由於液體燃料槽19之底部21的溝81，係以在 雙流體合流空間部43之中心軸周呈旋轉對稱之位置關係 的方式形成複數個，因此，從雙流體噴霧噴嘴3 8的噴霧 孔44被噴霧的液體燃料24之周方向的分佈量變均勻，並 能提昇該液體燃料24的燃燒性。 並且，在本實施形態例4的雙流體噴霧燃燒裝置，藉 由線圈彈簧3 6 (參照第4圖）往下按壓液體燃料槽1 9， 藉此將液體燃料槽1 9的底部2 1朝雙流體噴霧噴嘴3 8按 壓，使燃料槽1 9之底部21的錐面部（外側部分211)-1) 與雙流體噴霧噴嘴38的錐面部（內面38a)形成密著，藉 此就能防止在該等之接觸面21b-1、38a間形成間隙。因 此，能防止霧化用空氣46流到溝81以外的部分，充分發 揮因溝8 1所致的廣大區域之噴霧效果。 <實施形態例6> 第1 0圖（a )是表示有關本發明之實施形態例6之雙 流體噴霧燃燒裝置的雙流體噴霧器之下側部分之構造的縱 剖面圖，第1 〇圖（b )是第10圖（a)之L-L線端的橫剖 -51 - 200824793 面圖。 如第1 〇圖所示，在本實施形態例6的雙流體噴霧12 ，係液體燃料槽19之底部21的內面（上面）21a爲尖細 (倒圓錐狀）的錐面，在中心（倒圓錐狀之錐面的頂點位 置）形成有微細的液體燃料流出孔22。而且，液體燃料槽 1 9之底面2 1的外面（下面）2 1 b，亦爲尖細（倒圓錐狀） 的錐面。另一方面，雙流體噴霧噴嘴38並不具有霧化用 空氣導入部（參照第7圖），與噴霧器外筒27 —體形成 在噴霧化器外筒27的下端（亦可以焊接等來固定另外一 體者）。雙流體噴霧噴嘴3 8，係內面（上面）3 8a爲尖細 (倒圓錐狀）的錐面。 在液體燃料槽19之側部20的外周面20b之下端側， 係突設有複數個（在圖示例爲四個）支撐部91。該等之支 撐部9 1係在以等間隔設置在側部20的周方向，下面9 1 a 之外側部分91 a-1，是沿著雙流體噴霧噴嘴38之內面38a 而朝內側傾斜的錐面。因而，由於液體燃料槽1 9，係以支 撐部91之下面91a的外側部分91a- l嵌入到雙流體噴霧 噴嘴38的內面38a之方式抵接的狀態下被支撐，其結果 ，在液體燃料槽1 9之底部2 1的外面2 1 a與雙流體噴霧噴 嘴3 8的內面3 8a之間，係確保有尖細（倒圓錐狀）的間 隙，該間隙爲霧化用空氣流路92。即，外側之第1霧化用 空氣流路28與內側之雙流體合流空間部43，係介設第2 霧化用空氣流路92而連通。 雙流體合流空間部43，係爲藉由錐形構造的內面38a -52- 200824793 形成在雙流體噴霧噴嘴3 8之中央部的倒j 微細的噴霧孔44，係形成該雙流體合流空 (倒圓錐狀之空間部43的頂點位置）， 流空間部43。即，雙流體合流空間部43 流出孔22之下方’平面視之（上面視之 徑爲隨著朝向噴霧孔44而緩緩縮小的尖細 在##化用空菊i流路2 8流到下方的霧 通過支撐部91之間的霧化用空氣流通部 用空氣流路92，而被引導到雙流體合流名 雙流體合流空間部4 3與從液體燃料槽j 9 孔2 2所流出的液體燃料2 4形成衝突而合 結果’ ί仪體燃料2 4在藉由霧化用空氣4 6 ，會與霧化用空氣46 —同從雙流體噴霧g 44，噴射到燃燒空間部13。 再者，第10圖的雙流體噴霧器12的 ，係與第4圖的雙流體噴霧器12相同。 實施形態例6之雙流體噴霧燃燒裝置之雙 的部分的構造，均爲與第1圖〜第3圖的 裝置1 1相同。 若藉由本實施形態例6的雙流體噴霧 到如下的作用效果，並且，其他也能得到 例1相同的作用效果。 即，若藉由本實施形態例6的雙流體 從液體燃料流出孔22流出並流入到雙流 圓錐狀之空間。 間部4 3的中心 連通至雙流體合 係位在液體燃料 )爲圓形，其直 構造。 L用空氣46，係 93，流通至霧化 ?間部43，在該 之液體燃料流出 流（混合）。其 被霧化的狀態下 !嘴3 8的噴霧孔 其他部分的構造 並且，連有關本 流體噴霧器以外 雙流體噴霧燃燒 燃燒裝置，可得 與上述實施形態 噴霧燃燒裝置， 體合流空間部43 -53 - 200824793 的液體燃料24，與在第1霧化用氣體流路28流到下方之 後’與通過支撐部9 1之間的霧化用空氣流通部93，且流 到第2霧化用空氣流路92，被引導到雙流體合流空間部 43的霧化用空氣46，在雙流體合空間部43合流之後，與 該霧化用空氣46 —同從噴霧孔44被噴霧的構造，藉此， 從液體燃料槽1 9之液體燃料流出孔22流出的液體燃料24 ’與霧化用空氣46在雙流體合流空間部43混合之後，從 雙流體噴霧噴嘴3 8的噴霧孔44被噴射。因此，與未設置 雙流體合流空間部43的情形相比，由於液體燃料24之噴 霧的廣角變大，液體燃料24確實的被霧化，因此液體燃 料的燃燒性提昇。 <實施形態例7> 第1 1圖是表示有關本發明之實施形態例7之雙流體 噴霧燃燒裝置之構造的縱剖面圖，第1 2圖是第1 1圖之 M-Μ線端的橫剖面圖。 如第1 1及1 2圖所示，在本實施形態例7的雙流體噴 霧燃燒裝置，係將平板1 8形成多孔板。即，在圓環狀的 平板1 8，係形成有複數個燃燒用空氣流通孔1 〇 1。該等之 燃燒用空氣流通孔101，均設置在比燃燒用空氣流通孔52 (第1圓筒1 6 )更內側。因而，雖然在燃燒用空氣流路 1 5流到下方的燃燒用空氣5 0，主要是通過平板1 8之外周 側的燃燒用空氣流通孔5 2，流通到第1圓筒1 6之外側的 燃燒用空氣流路5 3之後，流入燃燒空間部1 3，但一部份 -54- 200824793 會在第1圓筒1 6的內側，通過燃燒用空氣流通孔1 ο 1流 入燃燒空間部1 3。 再者，第11圖及第12圖的雙流體噴霧燃燒裝置11 之其他部分的構造，係與第1圖〜第3圖的雙流體噴霧燃 燒裝置1 1相同。 若藉由本實施形態例7的雙流體噴霧燃燒裝置，可得 到如下的作用效果，並且，其他也能得到與上述實施形態 例1相同的作用效果。 即，若藉由本實施形態例7的雙流體噴霧燃燒裝置’ 在平板1 8，係在比燃燒用空氣流通孔5 2更內側形成有其 他的複數個燃燒用空氣流通孔1 〇 1，藉此由於一部份的燃 燒用空氣5 0，也會通過該等之燃燒用空氣流通孔1 0 1，因 此能藉由該燃用空氣50之流動來抑制在平板1 8之下面附 近產生燃燒用空氣的積水流，抑制煤灰附著在平板1 8的 下面。並且，由於低溫的燃燒用空氣經由其他的燃燒用空 氣流通孔1 〇 1流到雙流體噴霧噴嘴3 8的附近，因此也可 得到所謂能藉由該燃燒用空氣來冷卻易因火炎之輻射熱而 過熱的雙流體噴霧噴嘴3 8之效果。 <實施形態例8> 第1 3圖是表示有關本發明之實施形態例8之燃料電 池發電系統之槪要的系統圖。於第1 3圖是表示以上述實 施形態例1〜7的任一個雙流體噴霧燃燒裝置，作爲燃料 電池發電系統之重組器的熱源使用的情況之範例。 -55- 200824793 如第1 3圖所示’在重組器111的上部係設有燃燒爐 1 1 2，從該燃燒爐1 1 2的上面插入上述實施形態例1〜7的 任一個雙流體噴霧燃燒裝置1 1。在雙流體噴霧燃燒裝置 11係連接有圖未示的液體燃料供給系統、霧化用空氣供給 系統、燃燒用空氣供給系統。再者，有關雙流體噴霧燃燒 裝置1 1的詳細係如上所述。 在重組器111係連接有圖未表示的原料供給系統，從 該的原料供給系統供給作爲重組用之原料的甲院氣或燈油 等的重組用燃料和水。而且，在重組器111，係利用因在 雙流體噴霧燃燒裝置11的燃燒所產生的大量燃燒排氣之 熱，將前述重組用燃料進行水蒸氣重組，藉此產生重組氣 (富氫氣）。 以重組器111所產生的重組氣，係作爲發電用的燃料 ，供給到燃料電池1 1 3的陽極側。在燃料電池i i 3，係使 得供給到該陽極側的重組氣（氫）和供給到陰極側的空氣 (氧）引起電氣化學性反應，藉此進行發電。在燃料電池 1 1 3未使用於發電之殘餘的重組氣，係朝雙流體噴霧燃燒 裝置11回流，在此作爲燃燒裝置燃燒用的氣體燃料利用 〇 若藉由本實施形態例8的燃料電池發電系統，由於以 上述實施形態例1〜7的任一個雙流體噴霧燃燒裝置1 1作 爲重組器1 1 1之熱源使用，因此雙流體噴霧燃燒裝置1 1 會發揮如上述的優異效果，藉此就能達到重組器1 1 1的性 能提昇和成本減低等。 -56 - 200824793 再者，雖然在上述中，在液體燃料槽19只設置一個 液體燃料流出孔22，但並不限於此，也可設置複數個液體 燃料流出孔22。 並且，雖然在上述中，在液體燃料槽之底部設置液體 燃料流出孔，但未必限定於此，也可在液體燃料槽之側部 設置液體燃料流出孔。即，液體燃料槽係具有筒狀的側部 和設在該側部之下端的底部，且貯留著從液體燃料供給管 所供給的液體燃料，並且使前述已貯留的液體燃料從位在 比該已貯留的液體燃料之液面更下方，開設在側部或底部 的一個或複數個的液體燃料流出孔流出之構造亦可。 並且，雖然在上述中，在噴霧器外筒內設置液體燃料 槽，但未必限定於此，例如也可在噴霧器外筒之外設置液 體燃料槽，將從液體燃料槽之液體燃料流出孔所流出的液 體燃料，經由配管等與霧化用氣體一起供給到合流空間部 的構造。 並且，雖然在上述中，開放液體燃料槽的上端側，流 入到霧化用空氣流路之霧化用空氣的壓力也作用於貯留在 液體燃料槽內的液體燃料之液面的構造，但未必限定於此 ，例如也可將液體燃料槽的上端側形成大氣開放。即，藉 由液體燃料槽的內部與外部（雙流體合流空間部）之壓力 平衡，從液體燃料供給管所流出的液體燃料，暫時貯留在 液體燃料槽內，產生該液體燃料的液柱頭，藉此該已貯留 的液體燃料持續性的從液體燃料流出孔流出的構造亦可。 並且，雖然在上述中，溝爲廻旋型設置兩個，衝突型 -57- 200824793 設置四個，但並不限於此，可爲適當的數量。但爲了確保 液體燃料之噴霧量的周方向之分佈的均勻性，希望在廻旋 型中係溝的數量爲兩個以上，在衝突型中係溝的數量爲三 個以上。 ‘ 並且，如上述’設置平板（遮板）、燃燒用空氣供給 • 延遲用的第1圓筒、防積水用的第2圓筒等的構造（發明 )，並不限於以噴射如上述的液體燃料與霧化用氣體的雙 φ 流體噴霧器作爲燃料噴射器而配備的雙流體噴霧燃燒裝置 ’也能適用於配備只噴射液體燃料的燃料噴射器和噴射氣 體燃料的燃料噴射器之燃燒裝置。 並且，雖然在上述中，係在平板（遮板）的外周形成 突起’藉此在平板（遮板）的外周側設置燃燒用空氣流通 孔，但並不限於此，在平板（遮板）的外周側設有燃燒用 空氣流通孔亦可，例如在平板（遮板）本身的周緣部開設 孔，藉此在遮板的外周側設置燃燒用空氣流通孔亦可。 Φ 並且，雖然在上述中，平板（遮板）爲水平的板，但 並不限於此，平板（遮板）係由內側朝外側向斜下方傾斜 Λ 亦可。例如，如第1 1圖以中心線所假想性圖示，平板1 8 ^ 爲圓錐狀亦可。在該傾斜之平板的情況下，不光是燃燒用 空氣遠離燃料噴射噴嘴（雙流體噴霧噴嘴38)，亦發揮與 所謂使燃燒用空氣延遲供給的第1圓筒相同的功能。 〔產業上的可用性〕 本發明係有關一種在以霧化用氣體來霧化液體燃料之 -58- 200824793 狀態下使其燃燒的雙流體噴霧燃燒 在液體燃料之供給流量較少的狀態 發電系統之重組器用的雙流體噴_ 置。 【圖式簡單說明】 第1圖是表示有關本發明之實 霧燃燒裝置之構造的縱剖面圖。 第2圖是第1圖之A-A線端之 第3圖是第1圖之B-B線端之 第4圖（a)是抽出配備在第 裝置的雙流體噴霧器所示的放大縱 之C-C線端之橫剖面圖。 第5圖（a)是放大前述雙流 示的縱剖面圖，（b )是抽出配備 雙流體噴霧噴嘴所示的俯視圖（（ )。 第6圖（a)是表示有關本發 流體噴霧燃燒裝置的雙流體噴霧器 剖面圖，（b)是抽出配備在前述 噴霧噴嘴所示的俯視圖（（a )之I 第7圖（a)是表示有關本發 流體噴霧燃燒裝置的雙流體噴霧器 剖面圖，（b )是抽出配備在前述 裝置，例如應用於即使 下亦能使用的燃料電池 燃燒裝置極爲有用的裝 施形態例1之雙流體噴 橫剖面圖。 橫剖面圖。 1圖之雙流體噴霧燃燒 剖面圖，（b )是（a ) 體噴霧器之下側部分所 在前述雙流體噴霧器之 a )之D箭頭方向視圖 明之實施形態例2之雙 之下側部分之構造的縱 雙流體噴霧器之雙流體 3箭頭方向視圖）。 明之實施形態例3之雙 之下側部分之構造的縱 雙流體噴霧器之雙流體 -59 - 200824793 噴霧噴嘴所示的俯視圖（（a )之F箭頭方向視圖）。 第8圖（a)是表示有關本發明之實施形態例4之雙 流體噴霧燃燒裝置的雙流體噴霧器之下側部分之構造的縱 剖面圖（（b )之〇-0線端的縱剖面圖），（1>)是抽出配 備在前述雙流體噴霧器之液體燃料槽所示的仰視圖（（a β )之Η箭頭方向視圖），（c )是（b )之I箭頭方向視圖 ，（d)是（a)之J-J線端的橫剖面圖。 • 第9圖（a )是表示有關本發明之實施形態例5之雙 流體噴霧燃燒裝置的雙流體噴霧器之下側部分之構造的縱 剖面圖，（（b )之K-K線端的剖面圖），（b )是抽出配 備在前述雙流體噴霧器之液體燃料槽所示的仰視圖（（a )之L箭頭方向視圖），（c )是（a)之M-Μ線端的橫 剖面圖。 第10圖（a)是表示有關本發明之實施形態例6之雙 流體噴霧燃燒裝置的雙流體噴霧器之下側部分之構造的縱 ® 剖面圖’ （b )是（a )之L-L線端的橫剖面圖。 第11圖是表示有關本發明之實施形態例7之雙流體 噴霧燃燒裝置之構造的縱剖面圖。 • 第1 2圖是第1 1圖之M-M線端之橫剖面圖。 第1 3圖是表示有關本發明之實施形態例8之燃料電 池發電系統之槪要的系統圖。 第14圖（a)表示在習知的雙流體噴霧燃燒裝置中， 從液體燃料供給管的前端部間歇性地流出液體燃料之形態 的圖’ （b )表示在習知的雙流體噴霧燃燒裝置中，液體 60 200824793 燃料的供給流量產生較大變動之形態的圖。 【主要元件符號說明】 11 :雙流體噴霧燃燒裝置 、 1 2 :雙流體噴霧器 • 1 3 :燃燒空間部 1 4 :氣體燃料流路 φ 1 5 :燃燒用空氣流路 16 :第1圓筒 17 :第2圓筒 1 8 :平板 1 9 :液體燃料槽 2 0 :側部 20a :內周面 2 0 b :外周面 ® 2 1 :底部 21a :內面（上面） 21 b :外面（下面） & 2 lb-1 :外側部分 2 1b-2 :內側部分 22 :液體燃料流出孔 23 :液面 24 :液體燃料 24A :外形部 -61 - 200824793 25 :液體燃料供給管 25A :前端部（下端部） 26 :墊片 27 :噴霧器外筒 * 27Α :下端部 ’ 27Β :上端部 2 8 :霧化用空氣流路 • 29 :空氣流入孔 3 〇 :霧化用空氣供給管 3 0Α :前端部 3 1 :蓋體 3 2，3 3 :螺紋部 3 1 A :下部 3 1 B :段部 3 4 : 0形環 # 3 5 :墊片 3 6 :線圈彈簧 3 7 :霧化用氣體導入部 4 37a ：上面 37b :內周面 3 8 :雙流體噴霧噴嘴 3 8a :內面（上面） 3 9 :噴嘴本體部 40 :溝 -62- 200824793 41 :空間部 42 :空間部（凹部） 43 :雙流體合流空間部 44 :噴霧孔 # 45 :間隙 ‘ 46 :霧化用空氣 47 :氣體燃料供給管 • 48 :燃燒裝置外筒 48a :內周面 49 :氣體燃料 5 〇 :燃燒用空氣 51 :突起 5 2 :燃燒用空氣流通孔 5 3 :燃燒用空氣流路 54 :火星塞 _ 61 :溝 81 :溝 Μ 91 :支撐部 • 9 1 a :下面 9 1a-l :外側部分 92 :霧化用空氣流路 93 :霧化用空氣流通部 1 〇 1 :燃燒用空氣流通孔 1 1 1 :重組器 -63- 200824793 112： m mm 1 1 3 :燃料電池A two-fluid spray combustion apparatus characterized in that: the liquid fuel outflow opening is provided at a bottom of the liquid fuel tank, and is provided between a side portion of the liquid fuel tank and an outer cylinder surrounding the side of the liquid fuel tank. a tubular atomizing gas flow path; and a lower end portion of the outer cylinder, a two-fluid merging space portion located below the liquid fuel outflow hole is formed at a central portion, and is connected to the two-fluid confluent space portion a two-fluid spray nozzle constructed of one or more spray holes; and a tapered tapered surface formed under the bottom of the liquid fuel tank and forming a tapered cone on the surface of the two-fluid spray nozzle The liquid fuel tank on the face is provided on the two-fluid spray nozzle in a state in which the tapered surface portion of the liquid fuel tank is fitted into the tapered surface portion of the two-fluid spray nozzle. At the bottom of the liquid fuel tank, one or a plurality of grooves communicating with the atomizing gas flow path and the two-fluid combining space portion are formed, and -8-200824793 flows out from the liquid fuel outflow hole and flows into the two-fluid The liquid fuel in the merging space portion is configured to flow to the atomizing gas flow path, and then flow to the bottom of the liquid fuel tank to the atomizing gas which is guided to the two-fluid merging space portion at the bottom of the liquid fuel tank. After the two-fluid merging space portion is merged, it is sprayed and misted from the spray hole together with the atomizing gas. The two-fluid spray combustion apparatus according to any one of the second to fourth aspects of the present invention, characterized in that the two-fluid convection space unit has a circular shape as viewed from above The groove of the atomization gas introduction portion or the groove at the bottom of the liquid fuel tank is formed in a line direction along the circumference of the two-fluid junction space portion. Further, the two-fluid spray combustion apparatus according to any one of the second to fourth aspects of the present invention is characterized in that: the two-fluid convection space unit has a circular shape as viewed from above, • The groove of the atomizing gas introduction portion or the groove at the bottom of the liquid fuel tank is formed in a radial direction along the two-fluid merging space portion as viewed from above. Further, the two-fluid spray combustion apparatus according to the fifth aspect of the invention is characterized in that: the groove of the atomizing gas introduction portion or the groove at the bottom of the liquid fuel tank; A plurality of them are formed in a positional relationship in which the central axis of the two-fluid confluent space portion is rotationally symmetrical. Further, the two-fluid spray combustion apparatus according to the eighth aspect of the invention is characterized in that the two-fluid spray combustion apparatus according to the second to seventh aspect of the invention is characterized in that: the pressing member that presses the liquid fuel tank downward is formed a structure in which the bottom of the liquid fuel tank is pressed against the atomization gas introduction portion of the two-fluid spray nozzle, or a structure in which the bottom of the liquid fuel tank is pressed against the two-fluid spray nozzle . In the two-fluid spray combustion apparatus according to the first aspect of the invention, the liquid fuel outflow hole is provided in a bottom portion of the liquid fuel tank, and is formed in the liquid fuel tank. a tubular first atomizing gas flow path between the side portion and the outer cylinder surrounding the side portion; and a lower end portion of the outer cylinder to merge the two fluids below the liquid fuel outflow hole a two-fluid spray nozzle having a space portion formed at a central portion and configured to communicate with one or a plurality of spray holes of the two-fluid joint space portion, and a tapered surface portion is formed on the upper surface of the two-fluid spray nozzle. a lower tapered surface portion of the bottom portion of the liquid fuel tank is formed with a plurality of support portions on a side portion of the liquid fuel tank, and a tapered surface portion is formed on a lower surface of the support portion, and the liquid fuel tank is Provided on the two-fluid spray nozzle in a state in which the tapered surface portion of the support portion is fitted into the tapered surface portion of the two-fluid spray nozzle-10- 200824793 The gap between the tapered surface portion of the liquid fuel tank and the tapered surface portion of the two-fluid spray nozzle is used as the second atomizing gas flow path from the liquid fuel by the support portion. The liquid fuel that has flowed out of the hole and flows into the two-fluid gas flow space portion is configured to flow through the atomization gas flow portion between the support portions after flowing down the first atomization gas flow path ' The atomizing gas guided to the two-fluid gas flow space portion to the second atomizing gas flow path is merged with the atomizing gas, and then sprayed from the spray hole together with the atomizing gas. The two-fluid spray combustion apparatus according to any one of the second to ninth aspects of the present invention, characterized in that the two-fluid convection space portion is an inverted cone shape, and the The spray hole is formed at the vertex position of the conical space portion. Further, the two-fluid spray combustion apparatus according to any one of the second to tenth aspects of the present invention is characterized in that: - the gas is formed in the outer cylinder and the gas surrounding the outer cylinder The cylindrical gas fuel flow path between the fuel supply pipes, * the gaseous fuel is configured to flow downward in the gas fuel flow path, and is injected and burned from the lower end of the gas fuel flow path. The two-fluid spray combustion apparatus according to any one of the first to third aspects of the present invention, characterized in that the front end portion of the liquid fuel supply pipe is connected to the liquid fuel tank The inner peripheral surface of the side. Further, the two-fluid spray -11 - 200824793 combustion apparatus according to any one of the first to second aspects of the invention may further have the following structure. That is, the two-fluid spray combustion apparatus according to the first aspect of the present invention is the two-fluid spray combustion apparatus according to any one of the second inventions, wherein the liquid fuel is formed in a mist form from the two-fluid spray nozzle of the double-flow device toward the double mist nozzle The lower combustion space portion is injected to cause combustion of the combustion, and is characterized in that: the cylindrical combustion air formed between the two-fluid atomizer and the outer cylinder of the combustion device surrounding the double φ atomizer is disposed and separated The combustion air flow path and the illumination space portion are provided in the combustion air circulation hole on the outer peripheral side of the shutter, and the combustion air flowing downward in the combustion air flow path is blocked by the shutter. The outer periphery of the shutter is guided away from the fuel injection nozzle, and the combustion air flows into the combustion space portion. Further, the two-fluid spray combustion apparatus of the second structure is a first two-fluid spray combustion apparatus characterized in that z# is provided with a combustion air|cooling cylinder extending downward from the lower surface of the shutter, and the cylinder The combustion air that passes through the combustion air passage hole in the tubular other combustion air flow path that forms the combustion air passage hole between the outer casing of the combustion device, after the other combustion air flow path flows downward, From the lower end of the air flow path described above, it flows into the combustion space portion. Further, the two-component two-fluid spray combustion apparatus is a second one to a first spray fluid spray device, and a fluid spray flow path; 5; and, is a side of the structure, and the gas is supplied to the front through the flow of the through-hole flow structure. Structure 12-200824793 A two-fluid spray combustion apparatus characterized in that: one or more of the cylinders for preventing backwater flowing from the lower surface of the shutter are provided in the cylinder for the combustion air supply delay Inside. Further, the two-fluid spray combustion apparatus of the fourth aspect is a two-fluid spray combustion apparatus of any one of the third to third aspects, wherein the shutter is located inside the combustion air passage hole A plurality of other combustion air circulation holes are formed. According to the two-fluid spray combustion apparatus of the first aspect of the invention, the cylindrical side portion and the bottom portion provided at the lower end of the side portion are provided, and the liquid fuel supplied from the liquid fuel supply pipe is stored. And a liquid fuel tank having a structure which is located below the liquid level of the liquid fuel that has been stored to cause the liquid fuel to be stored to flow out from one or more liquid fuel outflow holes formed in the side portion or the bottom portion. The atomizing gas is used to atomize the liquid fuel flowing out of the liquid fuel outflow hole of the liquid fuel tank to be burned, thereby even when the liquid fuel is intermittently supplied from the liquid fuel supply pipe to the liquid fuel tank, The liquid fuel stored in the liquid fuel tank also continuously flows out of the liquid fuel outflow holes of the liquid fuel tank. That is, when the supply flow rate of the pump of the liquid fuel supply system is lowered 'the liquid fuel is intermittently supplied from the liquid fuel supply pipe to the liquid fuel tank, the liquid level of the liquid fuel stored in the liquid fuel tank slightly fluctuates' from The outflow rate of the liquid fuel in the liquid fuel outflow port is slightly changed, unlike the fluctuation of the liquid fuel supply flow rate as in the conventional-13-200824793. Therefore, when the liquid fuel supply flow rate is low, the liquid fuel can be stably supplied, and it becomes easy to establish stable combustion without causing generation of unburned exhaust gas and misfire. According to the two-fluid spray combustion apparatus of the second aspect of the invention, the liquid fuel flowing out from the liquid fuel outflow hole and flowing into the two-fluid junction space portion is configured to flow downward in the atomization gas flow path. After that, φ is supplied to the atomization gas introduction portion, and the atomization gas guided to the two-fluid junction space portion is merged in the two-fluid junction space portion, and then sprayed from the atomization gas together with the atomization gas. Since the hole is sprayed, the liquid fuel is well mixed with the atomizing gas which is accelerated by the groove (the velocity component in the horizontal direction is increased) in the two-fluid mixing space portion, and is then ejected from the spray hole of the two-fluid spray nozzle. Therefore, compared with the case where the two-fluid merging space and the groove are not provided, since the wide angle of the spray of the liquid fuel becomes large, the liquid fuel is surely atomized, so that the flammability of the liquid fuel is improved. In the two-fluid spray combustion apparatus according to the third aspect of the invention, the liquid fuel tank is in a state in which the liquid fuel tank is fitted to the tapered surface portion of the atomizing gas introduction portion. Since it is provided in the above-mentioned atomizing gas introduction portion, the liquid fuel tank and the central axis of the two-fluid spray nozzle are easily aligned. Therefore, since the liquid fuel is not formed on one side, the width of the atomizing gas flow path is uniformly formed in the circumferential direction, and the flow of the atomizing gas for forming the atomizing gas flow path can be uniformly formed in the circumferential direction. It is thus possible to ensure the symmetry of the spray of liquid fuel from the spray holes of the two-fluid spray nozzle (i.e. the symmetry of the fire). 14-200824793 According to the two-fluid spray combustion apparatus of the fourth aspect of the invention, the liquid fuel flowing out of the liquid fuel outflow hole and flowing into the two-fluid joint space portion is configured to flow to the atomizing gas flow path. After that, the atomizing gas which is guided to the second fluid combining space portion in the bottom of the liquid fuel tank is merged with the atomizing gas in the second fluid combining space portion, and then flows from the atomizing gas together with the atomizing gas. When it is sprayed, the liquid fuel is well mixed with the atomizing gas which accelerates the flow rate (the speed component in the horizontal direction) due to the groove, and is sprayed from the spray hole. Therefore, compared with the case where the two-fluid combining space portion and the groove are not provided, since the wide angle of the spray of the liquid fuel becomes large, the liquid fuel is surely atomized, so that the fuel property of the liquid fuel is improved. Further, the liquid fuel tank is provided in the two-fluid spray nozzle in a state in which the tapered surface portion of the liquid fuel tank is fitted into the tapered surface portion of the two-fluid spray nozzle, so that the liquid fuel tank is provided. It is easy to match the center axis of the two-fluid spray nozzle. Therefore, since the liquid fuel is not formed on one side, the width of the atomizing gas flow path is uniformly formed in the circumferential direction, and the flow of the atomizing gas for forming the atomizing gas flow path can be uniformly formed in the circumferential direction. It is thus possible to ensure the symmetry of the spray of liquid fuel from the spray holes of the two-fluid spray nozzle (i.e. the symmetry of the fire). According to the two-fluid spray combustion apparatus of the fifth aspect of the invention, the groove of the atomizing gas introduction portion or the groove at the bottom of the liquid fuel tank is formed on the circumference of the two-fluid joint space portion as viewed from above. In the two-fluid junction space, the atomization gas becomes a swirling flow and -15-200824793 is mixed with the liquid fuel, so the liquid fuel and the atomizing gas are more surely mixed. Therefore, the liquid fuel injected from the spray hole of the two-fluid spray nozzle can be more reliably atomized, and the flammability of the liquid fuel can be further improved. According to the two-fluid spray combustion apparatus of the sixth aspect of the invention, the groove of the atomizing gas introduction portion or the groove at the bottom of the liquid fuel tank is formed as viewed from above, and the path along the two-fluid junction space portion is formed. Therefore, in the two-fluid junction space portion, the atomization gas collides with the liquid fuel so as to collide with the fuel, so that the liquid fuel and the atomization gas are more reliably mixed. Therefore, the liquid fuel injected from the spray hole of the two-fluid spray nozzle can be more reliably atomized, and the flammability of the liquid fuel can be further improved. According to the two-fluid spray combustion apparatus of the seventh aspect of the invention, the groove of the atomization gas introduction portion or the groove at the bottom of the liquid fuel tank is rotationally symmetrical with respect to the central axis of the two-fluid junction space portion. Since the positional relationship is formed in plural, the amount of distribution of the liquid fuel sprayed from the spray holes of the two-fluid spray nozzle becomes uniform, and the flammability of the liquid fuel can be improved. According to the two-fluid spray combustion apparatus of the eighth aspect of the invention, the bottom portion of the liquid fuel tank is configured to form an atomizing gas introduction portion toward the two-fluid spray nozzle by a pressing member that presses the liquid fuel tank downward. The bottom portion of the liquid fuel tank is pressed against the two-fluid spray nozzle, and the bottom portion of the bottom portion of the fuel tank is adhered to the upper surface of the atomizing gas introduction portion. The tapered surface of the bottom of the fuel tank is adhered to the tapered surface of the atomizing gas introduction portion, or the tapered surface of the liquid fuel tank is adhered to the tapered surface of the two-fluid spray nozzle, thereby preventing the A gap is formed between the contact faces. Therefore, it is possible to prevent the atomization gas from flowing to a portion other than the groove, and to sufficiently exhibit the spray effect of a large area due to the groove. According to the two-fluid spray fuel device of the ninth aspect of the invention, the liquid fuel flowing out of the liquid fuel outflow hole and flowing into the two-fluid joint space portion is configured to flow in the first atomizing gas flow path. After that, the atomizing gas passing through the atomizing gas flow portion between the support portions and the second atomizing gas flow path are guided to the atomizing gas in the two-fluid combining space portion, and the two-fluid gas merges After the space portions are merged, they are sprayed from the spray holes together with the atomizing gas, and the liquid fuel is mixed with the atomizing gas in the two-fluid mixing space portion, and then sprayed from the spray holes of the two-fluid spray nozzle. Therefore, compared with the case where the two-fluid combining space portion is not provided, since the wide angle of the spray of the liquid fuel becomes large, the liquid fuel is surely atomized, so that the fuel property of the liquid fuel is improved. According to the two-fluid spray fuel device of the ninth aspect of the invention, since the two-fluid merging space portion has an inverted conical shape, the spray hole is formed at a vertex position of the inverted conical space portion, so that the two-fluid can be more reliably performed. The mixing of the liquid fuel and the atomization gas in the merged space portion. Therefore, the liquid fuel sprayed from the spray holes can be atomized more reliably, and the flammability of the liquid fuel can be further improved. According to the two-fluid spray fuel device of the eleventh aspect of the invention, the gas fuel is formed in the gas fuel by forming a cylindrical gas fuel flow path formed between the outer cylinder and the gas fuel supply pipe surrounding the outer cylinder. The flow path flows downward, and is injected from the lower end of the gas fuel flow path to burn -17-200824793, whereby the gaseous fuel injected from the cylindrical gas fuel flow path is uniformly formed in the circumferential direction, and thus When the flammability is improved, for example, when the supply amount of the liquid fuel is small, the inflammatory effect due to the gaseous fuel is exerted. According to the two-fluid spray fuel device of the twelfth aspect of the invention, the front end portion of the liquid fuel supply pipe is connected to the inner peripheral surface of the side portion of the liquid fuel tank, so that the liquid fuel flows out from the liquid fuel supply pipe. When the amount is small, the liquid fuel is also sent to the inner peripheral surface to be discharged, so that the liquid fuel from the liquid fuel outflow hole can be more stably discharged. That is, if the liquid fuel falls into a granular form, it is considered that the liquid level of the liquid fuel stored in the liquid fuel tank is greatly changed, and when the liquid level is very low, the liquid fuel is temporarily exposed. The hole, the outflow of the liquid fuel is interrupted, but if the liquid fuel is delivered to the inner peripheral surface of the liquid fuel tank, the related disadvantages can be prevented. In the two-fluid spray combustion apparatus of the first structure, the combustion air flowing downward in the combustion air flow path is shielded by the shutter and guided to the outer peripheral side of the shutter. The fuel injection nozzle is separated from the fuel injection nozzle and flows into the combustion space through the combustion air passage hole. Therefore, only a part of the combustion air is mixed with the fuel injected from the fuel injection nozzle in the combustion space portion, and is applied to the fuel injection nozzle. When the fuel is burned, the remaining combustion air flows further down to be mixed with the combustion exhaust gas generated by the combustion. Therefore, by one (one-stage) combustion air supply, moderate mixing of the combustion air and the fuel can be achieved, and the fire is not excessively cooled to generate a large amount of combustion exhaust gas. Therefore, it is possible to generate a large amount of combustion exhaust gas with a simple structure, and it is possible to realize a combustion apparatus such as a double-burning device which does not cause generation of unburned gas and misfire. Further, due to the shutter, the combustion air flows into the combustion space at a position away from the combustion, so that a part of the combustion is given to the fuel at a position away from the shutter. Therefore, it is possible to prevent the coal ash from adhering to the amount of coal ash that is attached to the underside of the shutter when the ash is away from the bottom, and there is a possibility that the fuel injection nozzle is clogged or the coal ash absorbs the flaming fuel. The disadvantages of abnormal heating of the ejector, etc., but as described above, are prevented from being under the visor, thereby preventing the occurrence of related defects. If the two-fluid spray combustion device of the second structure is used, the lower surface of the shutter extends downward. In the combustion air supply, a cylindrical other combustion air flow path that communicates with the front air flow through hole is formed between the cylinder and the outer casing of the combustion device, and the combustion air passing through the air circulation hole is formed in the other flow path. After flowing to the lower side, the other combustion air flow flows into the combustion space portion, so that a part of the combustion delay can be supplied to the fuel injected from the fuel injection nozzle. The combustion air is also supplied to the fuel position, so that it can be self-shielded. Therefore, the position of the fire can be kept away from the shutter and can be placed under the shutter. Further, although the portion to be supplied to the fuel is provided, the action from the shutter away from the lower side can be obtained only by providing the shutter as described above, but the second air supply for the combustion air supply is delayed. A portion of the combustion fluid spray fuel injection nozzle is supplied with air under the position plate of the fire. It can generate coal ash, radiant heat, and cause coal ash to adhere. 〇 Since the combustion air is set to be used for the delay, the combustion air is used at the lower end of the combustion air, that is, the air is burned away, that is, a part away from the bottom. Preventing the use of coal ash with combustion air, even if it is set, if the air is supplied to the fuel position from -19-200824793, it is possible to make sure that the self-shield is far from the bottom. Further, in the first configuration described above, the shutter is not too large due to the combustion device or the like, and the fuel injection nozzle to the combustion space: when the distance is insufficient, the amount of gas supplied to a part of the fuel is excessive. There is excessive cooling of the fire. In this case, if a cylinder for the combustion air supply delay is provided, not only the combustible air is supplied to the fuel, but also the combustion air supply to a part of the fuel can be reduced from the shutter. The right amount. Therefore, from the related point of view, it is effective to provide the cylinder of the invention, and it is also possible to reduce the miniaturization of the shutter device by providing the cylinder. According to the two-fluid spray combustion apparatus of the third aspect, the cylinder for preventing back water extending downward from the lower surface of the plate is placed inside the cylinder for delaying the supply of combustion air, and the cylinder for preventing back water is used. To prevent water production (convection) near the bottom of the shutter. Therefore, it is possible to prevent ignition from occurring near the lower surface of the shutter, and the coal ash adheres to the underside of the shutter. According to the two-fluid spray combustion apparatus of the fourth aspect, the combustion air circulation hole is formed inside the combustion air circulation hole, whereby a part of the combustion is used for the other combustion. The air circulates through the air, so that the flow of air can be used to suppress the combustion flow near the lower surface of the shutter, and the coal ash is prevented from adhering to the underside of the shutter. Further, since the air is passed through the other combustion air circulation hole to the size of the restricted flow hole, the combustion air second structure is enough to separate a portion from the lower side, and the amount of the gas is shaped like this second to achieve combustion. The plurality of airs from which the above-mentioned cover or plural sets of fuel can be used to regenerate the fuel, and the plurality of airs of the above-mentioned shutters are also sprayed by the low-temperature combustion fuel of the combustion air. -20-200824793 In addition, the effect of the fuel injection nozzle which can be overheated by the radiant heat of the fire by the combustion air is also obtained. [Embodiment] [Best form for carrying out the invention] The embodiments of the present invention will be described in detail with reference to the drawings. <Embodiment 1> FIG. 1 is a longitudinal cross-sectional view showing a structure of a two-fluid spray combustion apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG. 3 is a cross-sectional view of the BB line end of Fig. 1. Further, Fig. 4(a) is an enlarged longitudinal sectional view showing the two-fluid atomizer equipped with the two-fluid spray combustion apparatus of Fig. 1, and Fig. 4(b) is the CC line end of Fig. 4(a). In the cross-sectional view, Fig. 5(a) is a longitudinal sectional view showing the lower side portion of the two-fluid atomizer, and Fig. 5(b) is a drawing of the two-fluid spray nozzle provided in the two-fluid atomizer. Top view (Fig. 5 (a) D arrow direction view). The two-fluid spray combustion apparatus 1 of the first embodiment will be described with reference to Figs. 1, 2 and 3, and the two-fluid spray combustion apparatus 1 has a combustion unit outer cylinder 48 in the outer cylinder 48 of the combustion apparatus. A two-fluid atomizer 12 is disposed at a central portion of the upper side, and a lower side of the two-fluid atomizer 12 is a combustion space portion 13. A gas fuel supply path 14 is formed around the two-fluid atomizer 1 2, and a combustion air supply path 15 is formed around the gas fuel supply path 14 . Further, the combustion air supply path 21 - 200824793 15 is separated from the combustion space portion 13 by a flat plate 18 as a shutter, and the lower surface of the flat plate 18 is provided as a combustion air supply delay. The first cylinder 16 of the cylinder and the second cylinder 17 as a cylinder for preventing water accumulation. The construction of the two-fluid atomizer 12 will be described in detail based on Figures 4 and 5. Further, the two-fluid atomizer 12 is a two-fluid for ejecting a liquid fuel and a gas for atomization (air for atomization), i.e., atomizing the atomizing gas and ejecting the liquid fuel. φ As shown in Figs. 4 and 5, a liquid fuel tank 19 is provided in the two-fluid atomizer 12 system. The liquid fuel tank 190 has a cylindrical side portion (main body portion) 20 and a bottom portion 21 provided at the lower end of the side portion 20. Then, the liquid fuel 24 for combustion of the combustion device is stored in the inside of the liquid fuel tank 19, and the fine liquid fuel outflow hole 22 is opened in the center portion of the bottom portion 21 of the liquid fuel tank 19. The liquid fuel outflow port 22 is located below the liquid level 23 of the liquid fuel 24 stored in the liquid fuel tank 19. That is, the liquid fuel 24 supplied from the liquid fuel supply pipe 25 is temporarily stored in the liquid fuel tank 19, and the stored liquid fuel 24 is from the lower liquid fuel outflow port 22 to the liquid fuel tank 19. Flowing out. The height of the liquid surface 23 of the liquid fuel 24 stored in the liquid fuel tank 19 at this time (the height from the inner surface 21a of the bottom portion 21 to the liquid surface 23) is such that it corresponds to the liquid fuel 24 flowing to the liquid fuel outflow hole. The height of the liquid column head (detailed later) of the pressure loss portion at 22:00. For the liquid fuel 24 for burning the combustion device, for example, kerosene, heavy oil, alcohol, diethyl ether or the like can be used. The liquid fuel supply pipe 25 is a front end portion (lower end portion) 25A, and is inserted downward into the liquid fuel tank 19 from the upper end of the liquid-22-200824793 body fuel tank 19 to be above the liquid level 23 and at the center portion. The method is disposed in the liquid fuel tank 19. The base end side of the liquid fuel supply pipe 25 is connected to a liquid fuel supply pump of a liquid fuel supply system (not shown). Further, as shown by a broken line in Fig. 5(a), the front end portion 25A of the liquid fuel supply pipe 25 may be in contact with the inner peripheral surface 20a of the side portion 20 of the liquid fuel tank 19. When the supply flow rate of the liquid fuel 24 is small, when the front end portion 25A of the liquid fuel supply pipe 25 is separated from the inner peripheral surface 20a of the liquid fuel tank 19, the liquid fuel 24 may fall into a granular form as shown in the example, However, when the front end portion 25A of the liquid fuel supply pipe 25 comes into contact with the inner peripheral surface 20a of the liquid fuel tank 19, the liquid fuel 24 is sent to the inner peripheral surface 20a to flow down. The liquid fuel tank 19 is disposed concentrically with the sprayer outer cylinder 27 in a cylindrical sprayer outer cylinder 27, and a cylindrical space portion between the side portion 20 of the liquid fuel tank 19 and the sprayer outer cylinder 27, The atomizing air flow path 28 is used as a gas flow path for atomization. The sprayer outer cylinder 27 is provided with an air inflow hole 2, and the front end portion 30A of the atomizing air supply pipe 30 is connected to the air inflow hole 29. The base end side of the atomizing air supply pipe 3 is connected to an air supply blower of the atomizing air supply system (not shown), and the two-fluid spray nozzle 38 is attached to the lower end portion 27A of the sprayer outer cylinder 27, and Located on the lower side of the liquid fuel tank 19. That is, the two-fluid atomizer 12 is used as a buffer for mitigating the fluctuation of the liquid fuel supply flow rate, and the liquid fuel body 19 is interposed between the liquid fuel supply pipe 25 and the two-fluid spray -23-200824793 nozzle 38. Construction. The two-fluid spray nozzle 38 has a disk-shaped nozzle body portion 39 and an atomizing air introduction portion 37 that is formed as an atomizing gas introduction portion on the nozzle body portion 39, and is disposed above the nozzle body portion 39. The peripheral portion is in contact with the lower end surface of the sprayer outer tube 27, and the atomizing air introduction portion 37 is fitted to the inner side of the lower end portion 27a of the sprayer outer tube 27, and is fixed by means of welding or the like. It is fixed to the lower end portion 27A of the sprayer outer cylinder 27. # The atomizing air introduction portion 37 is formed in an annular shape, and has a space portion 41 which is circular in plan view (top view) at its central portion. The nozzle body portion 39 is formed with an inverted conical space portion (recessed portion) 42' at its central portion, and a fine spray hole 44 is formed at the center (the apex position of the inverted conical space portion 42). The space portion 41 of the atomizing air introducing portion 37 is connected to the space portion 42 of the nozzle body portion 39, and the space portions 41, 42 constitute the two-fluid combining space portion 43. In other words, the two-fluid merging space portion 43 has a circular shape as viewed from above, and its diameter is a tapered structure that gradually decreases toward the spray hole 44. A groove (crack) 40 is formed in the atomization air introducing portion 37 at two locations in the circumferential direction. The grooves 40 are of a slewing type, and are formed in the above-mentioned manner, forming a wiring direction along the circumference of the two-fluid merging space portion 43, and a central axis of the two-fluid merging space portion 43 (in the illustrated example) The central axis of the spray hole 44 has a positional relationship of rotational symmetry (equally spaced in the circumferential direction). On the other hand, the upper end portion 27B of the sprayer outer cylinder 27 is closed by a lid 31 which also serves as a closing member for preventing the atomizing air from leaking outward from the inside of the sprayer outer cylinder 27. The cover body 3 1 is screwed to the threaded portion formed on the inner peripheral surface of the upper end portion 27B of the sprayer outer tube 27 by forming the thread portion 3 3 on the outer peripheral surface of the lower portion 3 1 A from -24 to 200824793. 32, and is mounted on the upper end portion 278 of the sprayer outer cylinder 27. A beak ring 34 for reliably preventing leakage of the atomizing air is interposed between the segment portion 3 1B of the lid body 31 and the upper end portion 27B of the nebulizer outer tube 27. The front end portion 25A of the liquid fuel supply pipe 25 passes through the lid body 31, passes through the inside of the sprayer outer cylinder 27 (in the coil spring 36), and is inserted into the liquid fuel tank 19 from the upper end of the liquid fuel tank i9. A coil spring 36 which is a pressing member is interposed between the spacer 35 provided on the lower surface side of the lid body 3 1 and the spacer 26 provided on the upper end side of the liquid fuel tank 19. The liquid fuel tank 19 is pressed downward by the coil spring 36, whereby the outer surface (lower surface) 21b of the bottom portion 21 of the liquid fuel tank 19 is pressed toward the upper surface 37a of the atomizing air introduction portion 37. Thereby, the outer surface (lower surface) 2 1 b of the bottom portion 21 which is in contact with each other is formed in close contact with the upper surface 37a of the two-fluid spray nozzle 38 (the atomizing air introduction portion 37), and the contact surface 2 1 b is prevented. 3 7a creates a gap. There is a gap 4 5 between the gasket 26 and the liquid fuel supply pipe 25, and the internal space of the liquid fuel tank 19 and the inner space of the sprayer outer cylinder 27 on the outer side of the liquid fuel tank 1 9 are provided via the gap 45. Form a connection. That is, the upper end of the liquid fuel tank 19 is opened to the internal space of the atomizer outer cylinder 27, and the internal space of the liquid fuel tank 19 is connected to the upper end portion (upflow portion) of the atomizing air flow path 28 . Therefore, the pressure of the atomizing air 46 flowing into the atomizer inflow port 27 from the air inflow hole 2 and flowing into the atomizing air flow path 28 also acts on the liquid fuel tank 19 - 200824793 Liquid level 23 of liquid fuel 24. In the two-fluid atomizer 12, the liquid fuel 24 for combustion of the combustion device that is transported from the liquid fuel supply pump via the liquid fuel supply pipe 25 flows out from the front end portion 25A of the liquid fuel supply pipe 25 (relatively high flow rate) It will continue to flow out continuously, and in the case of a relatively low flow rate, as shown in the example of Fig. 5(a), it will intermittently flow out, and will be temporarily stored in the liquid fuel tank 19. Then, the liquid fuel 24 stored in the liquid fuel tank 19 is continuously discharged from the liquid fuel outflow port 22 of the bottom portion 2 of the liquid fuel tank 19 toward the two-fluid junction space portion 43. Further, when the liquid fuel from the front end portion 25A of the liquid fuel supply pipe 25 is intermittently discharged, when the liquid fuel 24 flows out from the front end portion 2 5 A of the liquid fuel supply pipe 25, the liquid level 2 3 rises. Then, when the liquid fuel 24 flows out from the front end portion 2 5 A of the liquid fuel supply pipe 25, the liquid level 23 is lowered, and the liquid fuel flows out from the liquid fuel outflow hole 2 2 in response to the liquid level fluctuation. The flow rate of the liquid fuel 24 will also vary slightly, but this flow rate variation is less than the known flow rate variation. On the other hand, the atomizing air 46 sent from the air supply pump via the atomizing air supply pipe 3 流入 flows into the sprayer outer cylinder 27 from the air inflow hole 29, and in the liquid fuel tank 19 and the sprayer outer cylinder 27 The atomization between the air flows through the flow path 28 to the lower side. Then, the atomizing air 46 is supplied to the two-fluid spray nozzle 38, and flows to the groove 4' of the atomizing air introduction portion 37, thereby being guided to the two-fluid confluence space portion 4 in a state where the flow velocity is increased. The swirling flow is formed in the two-fluid combining space portion 43, and merges with the liquid fuel 24 flowing out of the liquid fuel outflow hole 22 of the liquid fuel tank 19 (mixed -26-200824793). As a result, the liquid fuel 24 is well mixed with the atomizing air 46. The liquid fuel 24 is atomized by the atomizing air 46, and the atomizing air 46 is sprayed from the two-fluid spray nozzle 38. The hole 44 is burned to the combustion space portion 13 (flame). Further, the ignition of the atomized body fuel 24 is started by the spark plug 5 4 . Here, the column head 贮 of the liquid fuel 24 stored in the liquid fuel tank 19 can be described in detail. The liquid column head η can be caused by a pressure loss ΔΡ (hole) when the liquid fuel 24 flows through the liquid fuel outflow hole 22, and is ignited from the liquid. The kinetic energy 液体 of the liquid fuel 24 flowing out of the outflow hole 22 and the pressure loss ΔΡair of the atomizing air 49 such as the groove 40 are obtained by the following equation. Liquid column head H = pressure loss ΔΡ (hole) + kinetic energy E - pressure loss △ Pair kinetic energy E can be obtained by the following equation: the flow rate v of the liquid fuel 24 and the density P of the liquid fuel. Kinetic energy = p v 2 / 2 Further, the liquid level of the liquid fuel 24 stored in the liquid fuel tank 19 is changed by the flow rate of the liquid fuel 24 supplied to the liquid fuel 19 via the liquid fuel supply pipe 25. That is, when the output of the fuel supply is adjusted and the supply flow rate of the liquid fuel 24 is increased, the liquid level 23 is increased. When the supply flow rate of the liquid fuel 24 is decreased, the liquid level 23 is lowered. Therefore, the height of the body fuel tank 19 is a height corresponding to the change in the height of the liquid level 2 3 in accordance with the adjustment range of the specific liquid fuel supply flow rate. -27-200824793, the liquid fuel 24 is sprayed into a conical shape from the spray hole 44 as shown in the example of Fig. 5 (a), but the spray is sprayed at this time. The breadth (spray angle) is determined by the sectional area of the groove 40 (that is, the flow rate of the atomizing air 46 when flowing to the groove 40), the size of the spray hole 44 (i.e., the diameter of the hole), and the like. Next, the configuration other than the two-fluid atomizer 1 2 will be described in detail. As shown in the first, second and third figures, a cylindrical gas fuel supply pipe 47 is provided so as to surround the periphery of the sprayer outer cylinder 27. The gas fuel supply pipe 47 is provided concentrically with the atomizer outer cylinder 27, and the cylindrical space between the gas fuel supply pipe 47 and the atomizer outer cylinder 27 is a gas fuel flow path 14. The gaseous fuel 49 for combustion of the combustion device supplied from the gas fuel supply system flows downward in the gaseous fuel flow path 14 and is injected from the lower end of the gas fuel flow path 14 to the combustion space portion 13 to be combusted. The liquid fuel 24 and the gaseous fuel 49 can be burned separately or simultaneously. For example, methane, ethane, propane, butane, dimethyl ether, hydrogen, or the like can be used as the gaseous fuel for combustion of the combustion device, and when the two-fluid spray combustion device 11 is used as a heat source for the recombiner, Instead of using a fuel cell to generate electricity, the remaining recombined gas that is refluxed toward the two-fluid spray burner 1 1 can be used (see Figure 13). The burner outer cylinder 48 has a cylindrical shape and surrounds the periphery of the gas fuel supply pipe 47. The combustion device outer cylinder 48 is concentric with the gas fuel supply pipe 47, and the cylindrical space between the combustion device outer cylinder 48 and the gas fuel supply pipe 47 is the first combustion air flow path 15 . Therefore, the combustion air 50 supplied from the air supply blower of the combustion air supply system flows downward in the combustion air flow path 15. -28- 200824793 Further, a flat plate 18 is provided between the lower end portion of the combustion air flow path 15 and the lower end portion of the gas fuel supply pipe 47 and the lower end portion of the combustion device outer cylinder 48. The flat plate 18 is an annular plate and is divided into a combustion air flow path 15 and a combustion space portion 13. Further, in this case, in the illustrated example, the flat plate 18 is disposed at substantially the same height as the two-fluid spray nozzle 38, but is not limited thereto, and may be disposed, for example, at a ratio of the two-fluid spray nozzle 38. Higher position. However, when the position of the flat plate 18 is raised, the first cylinder 16 and the second cylinder 17 must be longer than the illustrated example. Therefore, the flat plate 18 has the same height as the two-fluid spray nozzle 38, but the height is the same as that of the two-fluid spray nozzle 38. The least waste of cost is ideal. The inner peripheral surface of the flat plate 18 is fixed to the outer peripheral surface of the gas fuel supply pipe 47 by a fixing means such as welding, and a plurality of outer peripheral surfaces of the flat plate 18 are formed (four in the illustrated example). The front end surface of the protrusion 51' of the protrusion 51' is fixed to the inner circumferential surface of the outer tube 48 of the combustion apparatus by a fixing means such as welding. Therefore, the gas fuel supply pipe 47 to the vicinity of the outer casing 48 of the combustion apparatus is closed by the flat plate 18, but the outer peripheral side of the flat plate 18 is formed by the projection 51 on the outer circumferential surface of the flat plate 18 and the outer cylinder 48 of the combustion apparatus. A gap is formed between the inner circumferential surfaces 48a, and the gaps are the combustion air circulation holes 52. In other words, the combustion air flow path 15 and the combustion space portion 13 communicate with each other through the combustion air flow holes 52. Therefore, after the combustion air flow path 15 flows downward, the combustion air 50 is blocked by the flat plate 18 and guided to the outer peripheral side of the flat plate 18, thereby being away from the two-fluid spray nozzle 38 (spray hole 44). It flows into the combustion air circulation hole 52 and flows into the combustion space portion 13. -29- 200824793 Further, the lower surface of the flat plate 18 is fixed by welding or the like, and the first cylinder 16 that is outwardly extended and the second cylinder that is downwardly inward are fixed at the same time. The position of the 1st and the 16th lines is further inside the combustion flow hole 52, and is disposed concentrically with the outer tube 48 of the combustion device, and between the cylinders between the outer tube 48 of the combustion device and the first cylinder 16, The second combustion air flow path 53. Therefore, the combustion air 50 that has flowed down to the first combustion air flow path 15 and burns the air flow hole 52 flows further downward in the second combustion flow path 53. Further, the combustion air 50 flows out of the lower end of the combustion air passage 5 3 and diffuses to the entire combustion 13 . Therefore, a part of the gas 50 flowing out of the combustion air flow path 53 (for example, about 3% of the whole) is directed toward the liquid fuel 24 sprayed from the two-fluid spray (two-fluid spray nozzle 38). 1 8 is supplied (mixed) away from the lower position and applied to the combustion of the liquid 24. The amount of combustion air to be mixed into the liquid fuel 24 at this time is, for example, set to an air ratio of 1.5 or less. Further, the remaining combustion air 50 (about 7% of the body) flowing out of the air flow path 53 is further flowed downward, and is mixed with the combustion exhaust gas generated as described above. Or, a large amount of combustion body is produced. Furthermore, the purpose of providing the first cylinder 16 is to delay the supply of a portion of the air 50 to the atomized liquid fuel 24, i.e., to the atomized liquid fuel 24 at a position below the flat hair, thereby Can be exposed to the flat plate 18, so that the coal ash adheres to the flat plate 18. Therefore, the means of extension is rounded with air. The air of the shape passes through the air for combustion, and the air is burned from the space to the air from the flat body fuel ^ 50, and the combustion of the exhaust gas from the combustion of the whole combustion is 5 1 8 to prevent the fire _ 1 round -30- 200824793 The length of the first cylinder 16, that is, the front end position (lower end position) of the first cylinder 16 is appropriately set to the relationship between the size of the flat plate 18 (the distance from the spray hole 44 of the two-fluid spray nozzle 38 to the combustion air circulation hole 52). can. In other words, the first cylinder 16 is not provided, and only the combustion air passage hole 52 in the outer peripheral portion of the flat plate 18 and the flat plate 18 is provided, and since the combustion air passage hole 51 is separated from the spray hole 44, it is used for combustion. A portion of the combustion air 50 of the air circulation hole 51 is supplied to the atomized liquid fuel 24 at a position away from the flat plate 18. Further, the longer the distance from the spray hole 44 to the combustion air passage hole 52, the more the portion of the combustion air 50 is supplied to the atomized liquid fuel 24, the more it leaves the flat plate 18. Further, the longer the distance between the flat plate 18 and the spray hole 44 to the combustion air flow hole, the larger the diameter of the two-fluid spray combustion device U. On the other hand, when the distance from the spray hole 44 to the combustion air passage hole 52 is limited by the restriction of the size of the two-fluid spray combustion apparatus 1, etc., only the flat plate 18 and the combustion air flow hole 51 are provided. It is not possible to sufficiently supply the partial combustion air 50 to the atomized liquid fuel 24, and at this time, it is very effective to provide the first cylinder 16 as shown in the example. In this case, the shorter the distance between the spray hole 44 and the combustion air circulation hole 52, the longer the first cylinder 16 is extended downward. However, in order to avoid interference between the first cylinder 16 and the liquid fuel 24 that has been sprayed, the first cylinder 16 must be positioned outside (upper side) of the outer portion 24A of the liquid fuel 24 that has been sprayed. That is, the front end (lower end) of the first cylinder 16 can only be extended to the outer shape portion 24A of the liquid fuel 24 that has been sprayed. Further, the distance from the spray hole 44 to the combustion air passage hole 52 is shortened by -31 - 200824793, since the position of the first cylinder 16 is also very close to the spray hole 44, the flat plate 18 to the outer shape portion 24A of the atomized liquid fuel 24. For the sake of distance, the first cylinder 16 cannot be too long. Therefore, it is also considered that the length of the first cylinder 16 of the spray hole 44 to the combustion air flow hole 52 is appropriately determined (including the first cylinder 16 as well), that is, the second cylinder 17 is in the first position. The inside of the cylinder 16 is disposed concentrically with the cylinder 16 . Further, the second cylinder 17 is provided to prevent convection of the atomized liquid fuel 24 in the vicinity of the flat plate 18, thereby preventing the flame from coming into contact with the flat plate 18 to adhere the coal ash 18. Therefore, it is preferable that the second cylinder 17 is extended as far as possible downward. However, in order to avoid interference between the cylinder 17 and the atomized liquid fuel 24, the second cylinder 17 (lower end) must be positioned at the outer portion 24A (upper side) of the atomized liquid fuel 24. That is, the front end (lower end) of the second cylinder 17 is also only the outer shape portion 24A of the atomized liquid fuel 24. For example, as shown in Fig. 1, when the distance between the two-fluid spray nozzle 38 hole 44 to the second cylinder 17 is L1 and the angle from the horizontal line of the outer shape portion 24A of the material 24 to be sprayed is θ, the double mist nozzle The length L2 of the front end (lower end) of 38 (spray hole 44) to the front end (lower end) of the second circular letter must satisfy 0 <L2 S Lltan0 The entire length of the second cylinder 17 is such that the front end (lower end) of the lower surface spray nozzle 38 (spray hole 44) of the flat plate 18 is elongated to L2. Further, such a condition corresponds to the front end (lower end) of the two-fluid spray nozzle mist hole 44 to the front end of the second cylinder 7 (the length of the first cylinder 16 is the same as the entire length of the first cylinder 16). The limit of the short distance, the distance and the 丨 可. The first round of the water (the spray liquid burning fluid can be extended on the outside of the front end of the second plate), and the spray to the double flow length 38 (spray end) spray喷-32- 200824793 The distance from the spray hole 44 of the nozzle 38 to the second cylinder 16 is, for example, a distance of 50 times or more or 60 times or more of the diameter of the spray hole 44 (for example, about 1 mm). The two-fluid spray combustion device 1 of the first embodiment has a cylindrical side portion 20 and a bottom portion 21 provided at a lower end of the side portion 20, and is provided with a liquid fuel 24 that is supplied from the liquid fuel supply pipe 25. And located below the liquid level of the liquid fuel 24 that has been stored, so that the liquid fuel 24 that has been stored is discharged from the liquid fuel tank 19 of the liquid fuel outlet hole 22 opened at the bottom portion 21 Atomizing air with air 46 A structure in which the liquid fuel 24 flowing out of the liquid fuel outflow port 22 of the liquid fuel tank 19 is combusted, whereby the liquid fuel 24 is intermittently supplied from the liquid fuel supply pipe 24 to the liquid fuel tank 19 The liquid fuel stored in the liquid fuel tank 19 is continuously discharged from the liquid fuel outflow port 22 of the liquid fuel tank 19. That is, the supply flow rate of the pump of the liquid fuel supply system is lowered, from the liquid fuel supply pipe 25 to When the liquid fuel tank 19 intermittently supplies the liquid 24, the liquid level 23 of the liquid fuel 24 stored in the liquid fuel tank 19 slightly fluctuates up and down, and the outflow flow rate of the liquid fuel 24 from the liquid fuel outflow port 22 slightly varies. The degree of change in the liquid fuel supply flow rate is not as large as conventionally known. Therefore, when the liquid fuel supply flow rate is low, a stable supply of the liquid fuel 24 can be formed, and it becomes easy to establish stable combustion without causing The generation of unburned exhaust gas and the occurrence of misfire. Further, the two-fluid spray combustion device 1 of the first embodiment is discharged from the liquid fuel outflow hole 22 The liquid fuel 22 that has flowed into the two-fluid merged-33-200824793 space portion 43 is configured to flow to the lower portion after the atomizing air flow path flows downward, and then flows to the groove 40 to the two-fluid in the atomizing air introduction portion 37. The atomizing air of the merging space portion 43 merges with the atomizing air and is misted from the spray hole 44 after the two-fluid merging portion 43 merges. Therefore, the liquid fuel 24 and the groove are accelerated in flow rate (square The atomizing air 46 of the increased velocity component is injected after the two-fluid air portion 43 is well mixed, and is then ejected from the spray 44 of the two-fluid spray nozzle 38. Therefore, the two-fluid combining space portion 43 and the groove are not provided. In contrast, since the wide angle of the spray of the liquid fuel 24 is increased, the liquid fuel 24 is surely atomized, so that the flammability of the liquid fuel 24 is improved and the two-fluid spray combustion of the first embodiment is set to 11, The groove 4 of the atomizing air introduction portion 37 is formed in a line direction along the circumference of the two-fluid merging space portion 43 in the upper view, and the atomizing air 46 is swirled in the two-fluid merging space portion 43. Flowing Fuel mixing body 24, the liquid fuel 24 and atomizing air 46, mixing more reliably. Therefore, the liquid fuel 24 injected from the spray hole 44 of the two-fluid spray 38 can be more reliably atomized to further improve the combustibility of the liquid fuel 24. Further, in the two-fluid spray combustion device 1 of the first embodiment, the groove 44 of the atomizing gas introduction portion 37 is rotationally symmetrical with respect to the central axis of the front two-fluid combining space portion 43. Since a plurality of positions are formed, the amount of distribution in the circumferential direction of the liquid fuel 24 sprayed from the injection holes 44 of the two-fluid spray nozzles 38 is made uniform, and the flammability of the liquid fuel 24 can be improved. 2 8 air-spraying water flow hole 40 am body-filled by the mouthpiece body and mist-34-200824793 Further, by the two-fluid spray combustion device 11 of the first embodiment, since it is pressed down The coil spring 36 of the liquid fuel tank 19 has a structure in which the bottom portion 21 of the liquid fuel tank 19 is pressed against the atomizing air introduction portion 37 of the two-fluid spray nozzle 38, so that the bottom portion of the bottom portion 21 of the fuel tank 19 is provided. The 21b is adhered to the upper surface 3 7 a of the atomizing air introduction portion 37, whereby a gap can be prevented from being formed between the contact surfaces 2 1 b and 3 7 a. Therefore, it is possible to prevent the atomizing air 46 from flowing to a portion other than the groove 40, and to sufficiently exert the spraying effect of the wide area due to the groove 40. Further, according to the two-fluid spray fuel device 1 of the first embodiment, since the two-fluid joint space portion 43 has an inverted cone shape, the spray hole 44 is formed at the vertex position of the inverted conical space portion 43, The mixing of the liquid fuel 24 and the atomizing air 46 of the two-fluid combining space portion 43 is more surely performed. Therefore, the liquid fuel 24 sprayed from the spray holes 44 can be atomized more reliably, and the flammability of the liquid fuel 24 can be further enhanced. In addition, the two-fluid spray fuel device 11 of the first embodiment includes the cylindrical gas fuel flow path 1 formed between the sprayer outer cylinder 27 and the gas fuel supply pipe 47 surrounding the sprayer outer cylinder 27. 4. The gas fuel 49 is configured to flow from the gas fuel flow path 14 to the lower side, and is injected from the lower end of the gas fuel flow path 14 to be combusted, thereby ejecting the gas from the cylindrical gas fuel flow path 14 Since the fuel 49 is uniformly formed in the circumferential direction, the flammability is enhanced, and when the supply of the liquid fuel 24 is small, for example, the inflammatory effect by the gaseous fuel 49 is exhibited. Further, in the two-fluid spray fuel device 11 of the first embodiment, the front end portion 25A of the liquid fuel supply pipe 25 is connected to the inner peripheral surface 20a of the side portion 20 of the liquid-35-200824793 body fuel tank 19. In the case where the outflow amount of the liquid fuel 24 from the liquid fuel supply pipe 25 is small, the liquid fuel is also sent to the inner peripheral surface 20a to be discharged, so that the liquid fuel 24 from the liquid fuel outflow port 22 can be made more. Stable outflow. That is, if the liquid fuel 24 is granulated and falls, the liquid level 23 of the liquid fuel 24 stored in the liquid fuel tank 19 is greatly changed, and the liquid level is very low, although It is considered that the liquid fuel outflow hole 22 is temporarily exposed, and the outflow of the liquid fuel 24 is interrupted. However, if the liquid fuel 24 is transported to the inner peripheral surface 20a of the liquid fuel tank 19, the occurrence of the related disadvantage can be prevented. Further, according to the two-fluid spray combustion apparatus 1 of the first embodiment, the combustion air flow passage '15 flows to the lower combustion air 50, and is blocked by the flat plate 18, and the flat plate 18 guides The outer peripheral side of the flat plate 18 is separated from the two-fluid spray nozzle 38, and flows into the combustion space portion 13 through the combustion air flow hole 52. Therefore, only a part of the combustion air 50 is burned in the combustion space portion 13. The liquid fuel 24 sprayed from the two-fluid injection nozzle 38 is mixed and applied to the combustion of the liquid fuel 24, and the remaining combustion air 50 further flows downward to be mixed with the combustion exhaust gas generated by the combustion. Therefore, by one-stage (one-stage) combustion air supply, moderate mixing of the combustion air 50 and the liquid fuel 24 can be achieved, and the fire is not excessively cooled, so that a large amount of combustion exhaust gas is generated. Namely, it is possible to generate a large amount of combustion exhaust gas with a simple structure, and it is possible to realize a combustion apparatus such as a two-fluid spray combustion apparatus which does not cause generation of unburned gas and misfire. Further, due to the flat plate 18, the combustion air 5 is caused to flow into the combustion space portion 13 at a position away from the double-flow-36-200824793 body spray nozzle 38, so that a part of the combustion air 50 is supplied to the fuel position. , can be away from the flat 18 away from below. Therefore, the position of the fire is also kept away from the flat plate 18 to prevent the coal ash from adhering under the flat plate 18. If the amount of coal ash adhering to the lower surface of the flat plate 18 is too large, there is a possibility that the clogging of the two-fluid spray nozzle 38 due to the coal ash or the radiant heat of the coal ash absorbing the flame may cause abnormal heating of the two-fluid atomizer 12 or the like. Disadvantages, but prevent the adhesion of coal ash to the underside of the flat plate 18 as described above, thereby preventing the occurrence of related disadvantages. Further, in the two-fluid spray combustion apparatus 1 of the first embodiment, the first cylinder 16 for the combustion air supply delay extending downward from the lower surface of the flat plate 18 is provided, and the first cylinder 16 is provided in the first cylinder. A cylindrical combustion air flow path 53 that communicates with the combustion air passage hole 52 is formed between the combustion device outer cylinder 48 and the combustion air 50 passing through the combustion air circulation hole 52. After flowing down to the lower side by the air flow path 5 3 , the lower end of the combustion air flow path 5 3 flows into the combustion space portion 13 , so that a part of the combustion air 50 can be delayedly supplied to the slave two-fluid spray nozzle. 3 8 is sprayed with liquid fuel 24 . That is, a portion of the combustion air 5 〇 is supplied to the position of the liquid fuel 24, and can be moved away from the flat plate 18 from below. Therefore, the position of the fire is also prevented from adhering to the underside of the flat plate 18 from the lower side of the flat plate 18. Further, although the combustion air 50 of the portion is supplied to the position of the liquid fuel 24, the effect of moving away from the flat plate 18 is obtained even if only the flat plate 18 as described above is provided, but In the first embodiment, the first cylinder 16 for the combustion air supply delay is provided, and a portion of the 37-200824793 combustion air 50 is supplied to the position of the liquid fuel 24, so that the self-plate 18 can be more reliably provided. Stay away from below. Further, the flat plate 18 is not too large due to the restriction of the size of the two-fluid spray combustion device 1, and the like, and is supplied to one portion of the liquid fuel 24 when the distance between the two-fluid spray nozzle 38 and the combustion air flow hole 52 is insufficient. If the amount of combustion air 50 is too large, there will be excessive cooling of the fire. On the other hand, in the first embodiment of the present embodiment, the first cylinder 16 for providing a combustion air supply delay can supply not only a part of the combustion air 50 to the liquid fuel 24 but also from the flat plate 18. Below, at this time, the amount of combustion air 50 supplied to a portion of the liquid fuel 24 can also be reduced to form an appropriate amount. Therefore, from the related viewpoint, it is effective to provide the first cylinder 16 of the first embodiment, and the first cylinder 16 can be provided to reduce the flat plate 18 to the two-fluid spray combustion apparatus 11. miniaturization. In addition, the second cylinder 17 for preventing water accumulation extending downward from the lower surface of the flat plate 18 is provided in the first stage for the combustion air supply delay by the two-fluid spray combustion apparatus 1 of the first embodiment. The inside of the cylinder 16 can prevent the accumulation of water (convection) of the liquid fuel 24 in the vicinity of the lower surface of the flat plate 18 by the second cylinder 17 for preventing water accumulation. Therefore, it is possible to prevent the liquid fuel 24 which is accumulated near the lower surface of the flat plate 18 from being ignited, and the coal ash adheres to the lower surface of the flat plate 18. Further, according to the two-fluid spray combustion apparatus 1 of the first embodiment, since the fire is surrounded by the outer cylinder 48 of the combustion apparatus, the fire (the liquid fuel 24 to be sprayed) and the combustion air 50 can be burned. The space portion 13 is well mixed, so the combustibility is improved. -38 - 200824793 <Embodiment 2> Fig. 6(a) is a longitudinal sectional view showing a structure of a lower portion of a two-fluid atomizer of a two-fluid spray burner according to Embodiment 2 of the present invention, and Fig. 6(b) The top view shown in the two-fluid spray nozzle equipped with the two-fluid atomizer described above is taken (the arrow E view of Fig. 6(a)). As shown in Fig. 6, in the two-fluid spray nozzle 38 of the two-fluid atomizer 1 2 of the second embodiment, grooves (cracks) 61 are formed in four places in the circumferential direction of the atomizing air introduction portion 37. The grooves 61 are of a conflict type, forming a radial direction of the two-fluid confluence space portion 43 which is circular in shape viewed from above, and a central axis of the two-fluid confluence space portion 43 (in the illustrated example, a spray hole) The central axis of 44 is a positional relationship in which the circumference is rotationally symmetrical (equally spaced in the circumferential direction). In the two-fluid atomizer 21, the atomizing air 46 flowing down to the atomizing air flow path 28 flows to the groove 6 of the atomizing air introducing unit 37 in the two-fluid atomizing nozzle 38. Thereby, in the state where the flow rate is accelerated, the flow into the two-fluid junction space portion 43 is merged, and the liquid-liquid fuel portion 43 flowing out from the liquid fuel outflow hole 22 of the liquid fuel tank 19 collides and merges. (mixing). As a result, the liquid fuel 24 is well mixed with the atomizing air 46, and the liquid fuel 24 is atomized by the atomizing air 46, and is separated from the atomizing air 46 by the two-fluid spray nozzle 38. The spray hole 44 is sprayed into the combustion space portion 〖3. Further, the configuration of the other portion of the two-fluid atomizer 12 of Fig. 6 is -39-200824793, which is the same as the two-fluid atomizer 12 of Fig. 4. Further, the structure of the portion other than the two-fluid atomizer of the two-fluid spray combustion apparatus of the second embodiment is the same as that of the two-fluid spray combustion apparatus 1 of Figs. 1 to 3 . According to the two-fluid spray combustion apparatus of the second embodiment, the following effects can be obtained, and the same operational effects as those of the first embodiment can be obtained. In the two-fluid spray combustion apparatus of the second embodiment, the groove 61 of the atomizing air introduction portion 37 is formed in the radial direction of the two-fluid joint space portion 43 as viewed from above. Thereby, in the two-fluid combining space portion 43, the atomizing air 46 forms a collision with the liquid fuel 24 and is mixed with the liquid fuel 24, so that the liquid fuel 24 and the atomizing air 46 are more surely mixed. Therefore, the liquid fuel 24 injected from the spray hole 44 of the two-fluid spray nozzle 38 can be more reliably atomized, and the flammability of the liquid fuel 24 can be further enhanced. Further, since the groove 61 of the atomizing gas introduction portion 37 is formed in a plurality of manners in which the central axis of the two-fluid merging space portion 43 is rotationally symmetrical, the two-fluid spray nozzle is used. The spray hole 44 of the 3 8 is uniformly distributed in the circumferential direction of the sprayed liquid fuel 24, and the combustibility of the liquid fuel 24 can be improved. <Embodiment 3> Fig. 7(a) is a cross-sectional view showing the structure of the lower side portion of the two-fluid atomizer of the two-fluid sprayer according to the third embodiment of the present invention, Fig. 7(b) is a plan view showing the two-fluid spray nozzle provided in the two-fluid atomizer described above (the arrow direction of Fig. 7(a) is shown in the direction of the arrow F). As shown in Fig. 7, in the two-fluid spray 1 2 of the third embodiment, the inner surface (upper surface) 21 a of the bottom portion 21 of the liquid fuel tank 19 is a tapered (inverted conical) tapered surface at the center ( A vertex position of the inverted cone-shaped tapered surface is formed with a fine liquid fuel outflow hole 22. Further, the outer surface (lower surface) 2 1 b of the bottom surface 21 of the liquid fuel tank 19 is a tapered (inverted conical) tapered surface, and the inner portion 21b-2 is a circular horizontal plane. On the other hand, the atomizing air introduction portion 37 of the two-fluid spray nozzle 38 is formed in an annular shape, and the inner peripheral surface 37b is a tapered (inverted-conical) tapered surface. Further, the liquid fuel tank 19 is fitted to the inner peripheral surface 37b (tapered surface) of the atomizing air introduction portion 37 by the outer portion 2 1 b-1 (conical surface portion) of the lower surface 21 b of the bottom portion 21 In the abutted state, it is provided on the atomizing air introduction unit 37. In this case, the liquid fuel tank 9 is pressed downward by the coil spring 36 (refer to Fig. 4), whereby the lower portion 2 1 b of the bottom portion 2 1 of the liquid fuel tank 19 is outside the portion 2 1 b-1 ( The tapered surface is pressed against the inner circumferential surface 37b (cone surface) of the atomizing air introduction portion 37 to prevent a gap from being formed between the contact surfaces 21b-1 and 37b. The nozzle body portion 39 is formed with an inverted conical space portion (concave portion) 42 at its central portion, and a fine spray hole 44 is formed at its center (the apex position of the inverted conical space portion 42). The space portion 41 of the atomizing air introduction portion 3 7 is connected to the space portion 42 of the nozzle body portion 39, and the space portions 41 and 42 of the -41 - 200824793 constitute the two-fluid junction space portion 43. In other words, the double-fluid confluent space portion 43 has a circular shape in plan view (top view), and its diameter is a tapered structure that gradually decreases toward the spray hole 44. In the atomizing air introducing portion 37, grooves (cracks) 40 are formed at two places in the circumferential direction. The grooves 40 are the same type of the wraps as the grooves 40 of Fig. 5, and the wiring directions along the circumference of the two-fluid combining space portion 43 are formed on the upper surface, and are in the two-fluid confluence space portion 43. The central axis circumference is a symmetrical positional relationship of rotation φ (equal intervals in the circumferential direction). Further, the groove formed in the atomizing air introducing portion 37 is not limited to the gyro type, and may be the same collision type as in the sixth drawing. The other portions of the two-fluid atomizer 12 of Fig. 7 are constructed in the same manner as the two-fluid atomizer 12 of Fig. 4. Further, the configuration of the portion other than the two-fluid atomizer of the two-fluid spray combustion apparatus according to the third embodiment of the present invention is the same as that of the two-fluid spray combustion apparatus 11 of Figs. 1 to 3 . Φ According to the two-fluid spray combustion apparatus of the third embodiment, the following operational effects can be obtained, and the same operational effects as those of the first and second embodiments can be obtained. That is, according to the two-fluid spray combustion apparatus of the third embodiment, the liquid fuel tank 197 is embedded in the tapered surface portion of the liquid fuel tank 19 (the outer portion 21b-1 of the lower surface 21b of the bottom surface 21). The atomizing gas inlet portion 37 is provided in a state in which it is in contact with the tapered surface portion (inner peripheral surface 3 7 b ) of the atomizing gas introduction portion 37, so that the liquid fuel tank 19 and the two-fluid spray The center axis of the nozzle 38 is easily aligned. Therefore, since the liquid-42-200824793 fuel waste 19 is not one side, and the width of the atomizing gas flow path 28 is uniformly formed in the circumferential direction, the atomizing gas flow path 28 can be uniformly formed in the circumferential direction. The flow of the atomizing gas 46 ensures the symmetry of the spray of the liquid fuel 24 from the spray holes 44 of the two-fluid spray nozzle 38 (i.e., the symmetry of the fire). Further, in the two-fluid spray combustion apparatus of the third embodiment, the liquid fuel tank 19 is pressed downward by the coil spring 36 (see Fig. 4), whereby the bottom portion 21 of the liquid fuel tank 19 is directed toward the two-fluid spray nozzle 38. The atomization air introducing unit 37 presses the tapered surface portion (outer portion 2 1 b-1 ) of the bottom portion 2 1 of the fuel tank 19 and the tapered surface portion (inner peripheral surface 3 7b of the atomizing air introduction portion 37). The formation of the adhesion prevents the formation of a gap between the contact faces 21 b-1, 37b. Therefore, it is possible to prevent the atomizing air 46 from flowing to a portion other than the groove 40, and to sufficiently exert the spraying effect of the wide area due to the groove 40. <Embodiment 4> Fig. 8(a) is a longitudinal sectional view showing the structure of the lower portion of the two-fluid atomizer of the two-fluid spray combustion apparatus according to the fourth embodiment of the present invention (Fig. 8(b) Fig. 8(b) is a bottom view showing the liquid fuel tank provided in the two-fluid atomizer (Fig. 8(a), arrow direction view), Fig. 8 (Fig. 8) c) is the arrow direction view of Fig. 8(b), and Fig. 8(d) is a cross-sectional view of the JJ line end of Fig. 8(a). As shown in Fig. 8, in the two-fluid spray crucible 2, 43-200824793 of the fourth embodiment, the inner surface (upper surface) 21a of the bottom portion 21 of the liquid fuel tank 19 is a tapered (conical) tapered surface at the center. (The apex position of the inverted conical taper surface is formed with a fine liquid fuel outflow hole 22. Further, the outer surface (lower surface) 21b of the bottom surface 21 of the liquid fuel tank, the outer portion 2 1 b-1 is pointed (inverted conical shape) The tapered surface, the inner portion 2 lb-2 is a horizontal horizontal 〇. On the other hand, the two-fluid spray nozzle 38 does not have an atomization introduction portion (refer to Fig. 7), and is formed integrally with the sprayer outer cylinder 27. At the lower end of the atomizer outer cylinder 27 (which may be welded or otherwise fixed), the two-fluid spray nozzle 38 has a tapered (conical) tapered surface on the inner surface (upper surface) 38a. Therefore, the liquid fuel tank 19 The outer portion 2 1 b-1 (cone surface) of the lower surface 2 1 b of the bottom surface 2 1 is placed in a state in which it is fitted into the inner surface 38 a (cone surface) of the double-flow spray nozzle 38. On the two-fluid spray nozzle 38. In this case, by the coil 3 6 (refer to Figure 4) The liquid fuel tank 19 is pressed, whereby the outer surface portion 2ib_1 of the lower surface 21b of the bottom portion 21 of the liquid combustion chamber 19 (the tapered surface portion is pressed toward the inner surface 38a (conical surface portion) of the two-fluid spray nozzle 38, preventing the same A gap is formed between the contact faces 21b_1 and 38b. Further, the inner surface 38a of the tapered structure is formed in the inverted conical space portion of the center of the two-fluid spray nozzle 38, which is a two-fluid confluence space 4 3 The fine spray hole 44 forms the center of the two-fluid confluence space portion (the vertex position of the inverted conical space portion 43), and communicates with the fluid confluence space portion 43. That is, the two-fluid confluence space portion 43 The flat surface (above viewed) is circular, and its diameter is inverted with the spray hole 4 4 ) 19 fine-faced air-sprayed inverted body J spring material) close-spray room 43 double view and -44- 200824793 slowly shrink The fine structure. Further, on the lower side 2b side of the bottom portion 21 of the liquid fuel tank 19, grooves (cracks) 71 are formed at two places in the circumferential direction. The grooves 71 are of a sinuous type, and are formed in a line direction along the circumference of the two-fluid merging space portion 43 and are rotationally symmetrical with each other in the central axis of the two-fluid merging space portion 43. (equal intervals in the circumferential direction). Therefore, the atomizing air 46 flowing to the lower side in the atomizing air flow path 28 is connected to the bottom portion 21 of the liquid fuel tank 19, and flows to the groove 71, thereby being guided to the two-fluid in a state where the flow rate is accelerated. The merging space portion 43 forms a fe flow in the two-fluid merging space portion 43, and merges (mixes) with the liquid fuel 24 flowing out of the liquid fuel outflow hole 22 of the liquid fuel tank 19. g As a result, the liquid fuel 24 is well mixed with the atomizing air 46, and the liquid fuel 24 is atomized by the atomizing air 46, and the atomizing air 46 is the same as the two-fluid The spray hole 44 of the spray nozzle 38 is injected into the combustion space portion 13. Further, the configuration of the other portion of the two-fluid atomizer 12 of Fig. 8 is the same as that of the two-fluid atomizer 12 of Fig. 4. Further, the structure of the portion other than the two-fluid atomizer of the two-fluid spray combustion apparatus of the fourth embodiment is the same as that of the two-fluid clear mist combustion apparatus 1 of Figs. 1 to 3 . According to the two-fluid spray combustion apparatus of the third embodiment, the following effects can be obtained and the same operational effects as those of the first embodiment can be obtained. That is, in the case of the two-fluid spray combustion apparatus of the fourth embodiment, the liquid fuel 24 flowing out from the liquid fuel outflow hole 44 and flowing into the two-fluid junction space portion 43 is formed in the atomizing air flow path. After flowing 28 to the lower side, the atomizing air 46 that has flowed to the groove 71 in the bottom surface 21 of the liquid fuel tank 19 and guided to the two-fluid combining space portion 43 merges in the two-fluid space portion 43 and the atomizing air. 46 - the same structure as the spray hole 44 is sprayed "by" the liquid fuel 24 and the atomizing air 46 which is accelerated by the groove 7 1 (the speed component in the horizontal direction is increased) in the two-fluid air portion 43 Goodly mixed 'sprayed from the spray hole 44. Therefore, as compared with the case where the two-fluid combining space portion 43 and the groove 71 are not provided, since the wide angle of the spray of the liquid fuel 24 becomes large, the liquid fuel 2* is surely atomized, so that the combustibility of the liquid fuel 24 is improved. Further, since the liquid fuel tank 195 is fitted to the tapered surface portion of the liquid fuel tank i9 (the outer portion 2 1 b-1 of the lower surface 2 1 b of the bottom portion 2 1 ) is fitted into the tapered surface of the two-fluid spray nozzle 38 (inside) In the state in which the surface 3 8 a ) abuts, the s is placed on the two-fluid spray nozzle 38, so that the liquid fuel tank B Φ and the central axis of the two-fluid spray nozzle 38 are easily aligned. Therefore, since the liquid fuel waste 19 is not one side, and the width of the atomizing air flow path 28 is uniformly formed in the circumferential direction, the atomization air flow path 28 can be uniformly formed in the circumferential direction. The flow of gas 46 ensures the symmetry of the spray of liquid fuel 24 from the spray holes 44 of the two-fluid spray nozzle 38 (i.e., the symmetry of the fire). Further, 'the groove 71 of the bottom portion 21 of the liquid fuel tank i 9 is formed on the upper side as the wiring direction along the circumference of the two-fluid joint space portion 43, whereby the two-fluid joint space portion 43 is used for atomization. The air 46 is mixed with the liquid fuel 24 as a cyclo-46-200824793 flow, so the liquid fuel 24 and the atomizing air 46 are more surely mixed. Therefore, the liquid fuel 24 injected from the spray hole 44 of the two-fluid spray nozzle 38 can be more reliably atomized to further improve the combustibility of the liquid fuel 24. Further, since the grooves 71 of the bottom portion 21 of the liquid fuel tank 19 are formed in a plurality of positions in which the central axis of the two-fluid joint space portion 43 is rotationally symmetrical, the spray holes from the two-fluid spray nozzle 38 are formed. The distribution amount of the liquid fuel 24 to be sprayed in the circumferential direction becomes uniform, and the flammability of the liquid fuel 24 can be improved. Further, in the two-fluid spray combustion apparatus of the fourth embodiment, the liquid fuel tank 1 is pressed downward by the coil spring 36 (see Fig. 4), whereby the bottom 2 1 of the liquid fuel tank 19 is doubled. The fluid spray nozzle 38 is pressed to form a tapered surface portion (outer portion 2 1 b-1 ) of the bottom portion 2 1 of the fuel tank 19 and a tapered surface portion (inner surface 38a) of the two-fluid spray nozzle 38. A gap is formed between the contact faces 21b-1, 38a. Therefore, it is possible to prevent the atomizing air 46 from flowing to a portion other than the groove 71, and to sufficiently perform the spraying effect of the wide area due to the groove 71. <Embodiment 5> FIG. 9(a) is a longitudinal cross-sectional view showing a structure of a lower portion of a two-fluid atomizer of a two-fluid spray combustion apparatus according to Embodiment 5 of the present invention (FIG. 9 (b) Fig. 9(b) is a bottom view showing the liquid fuel tank provided in the two-fluid atomizer described above (the arrow direction view of Fig. 9(a)), Fig. 9 (Fig. 9) c -47- 200824793) is a cross-sectional view of the MM line end of Fig. 9(a). As shown in Fig. 9, in the two-fluid spray 12 of the fifth embodiment, the inner surface (upper surface) 21a of the bottom portion 21 of the liquid fuel tank 19 is a tapered (inverted conical) tapered surface at the center (reverse cone) A vertex position of the tapered surface is formed with a fine liquid fuel outflow hole 22. Further, the outer surface (lower surface) 2 1 b of the bottom surface 21 of the liquid fuel tank 19 is a tapered (inverted conical) tapered surface, and the inner portion 2 lb-2 is a circular horizontal plane. On the other hand, the two-fluid spray nozzle 38 does not have an atomizing air introducing portion (see Fig. 7), and is formed integrally with the atomizer outer cylinder 27 at the lower end of the atomizer outer cylinder 27 (may also be welded or the like). Fixed another one). The two-fluid spray nozzle 38 has an inner surface (upper surface) 38a which is a tapered (inverted-conical) tapered surface. Therefore, the liquid fuel tank 195 is fitted to the inner surface 38a (cone surface) of the two-fluid spray nozzle 38 by the outer portion 2 1 b-1 (conical surface) of the lower surface 2 1 b of the bottom portion 2 1 thereof. In the connected state, it is disposed above the two-fluid spray nozzle 38. In this case, the liquid fuel tank 1 is pressed downward by the coil spring 36 (refer to Fig. 4), whereby the lower portion 2 1 b of the bottom portion 2 1 of the liquid fuel tank 19 is outside the portion 2 1 b -1 ( The tapered surface is pressed against the inner surface 38a (cone surface) of the two-fluid spray nozzle 38 to prevent a gap from being formed between the contact surfaces 2 1 b · 1 and 3 8 b. Further, the inner surface 38a of the tapered structure is formed in an inverted conical space at the central portion of the two-fluid spray nozzle 38, and is a two-fluid confluence space portion 43. The fine spray hole 44 forms the center of the two-fluid merging space portion 4 (the apex position of the inverted conical space portion 43), and communicates with the double-flow 48-200824793 body-combining flow space portion 43. That is, the two-fluid merging space portion 43 has a circular shape in plan view (top view), and its diameter is a tapered structure that gradually shrinks toward the spray hole 44. Further, on the lower surface 2 i b side of the bottom portion 21 of the liquid fuel tank 19, grooves (cracks) 8 1 are formed at four places in the circumferential direction. The grooves 8 1 are of a conflict type, and are formed in a radial direction along the radial direction of the two-fluid confluence space portion 43 and have a rotationally symmetrical positional relationship in the central axis circumference of the two-fluid confluent space portion 43 (in the circumferential direction) The directions are at equal intervals). Therefore, the atomizing air 460 flowing to the lower side in the atomizing air flow path 28 flows to the bottom portion 161 of the liquid fuel tank 19, and flows to the groove 8 1, thereby being accelerated in the state of the flow rate. The two-fluid joint space portion 43 is guided to merge (mix) with the liquid fuel 24 flowing out of the liquid fuel outflow hole 22 of the liquid fuel tank 9 in the two-fluid joint space portion 43. As a result, the liquid fuel 24 is well mixed with the atomizing air 46, and the liquid fuel 24 is atomized by the atomizing air 46, together with the atomizing air 46 from the two-fluid spray nozzle 38. The spray hole 44 is injected into the combustion space portion 13. Further, the configuration of the other portion of the two-fluid atomizer 12 of Fig. 9 is the same as that of the two-fluid atomizer 12 of Fig. 4. Further, the structure of the portion other than the two-fluid atomizer of the two-fluid spray combustion apparatus of the fifth embodiment is the same as that of the two-fluid spray combustion apparatus 1 of Figs. 1 to 3 . According to the two-fluid spray combustion apparatus of the fifth embodiment, the following effects can be obtained, and the same operational effects as those of the first embodiment-49-200824793 can be obtained. In other words, in the two-fluid spray combustion apparatus of the fifth embodiment, the liquid fuel 24 that has flowed out from the liquid fuel outflow port 44 and flows into the two-fluid junction space portion 43 is formed in the atomizing air flow path 28 to After that, the atomizing air 46 that has flowed to the two-fluid combining space portion 43 to the groove 81 in the bottom surface 21 of the liquid fuel tank 19 is merged with the atomizing air in the two-fluid space portion 43. 4 6 - a structure in which the spray hole 44 is sprayed, whereby the liquid fuel 24 and the atomizing air 46 which is accelerated by the groove 81 (the speed component in the horizontal direction is increased) are in the two-fluid air portion 43. Good mixing, sprayed from the spray holes 4 4 . Therefore, compared with the case where the two-fluid combining space portion 43 and the groove 81 are not provided, since the wide angle of the spray of the liquid fuel 24 becomes large, the liquid fuel 24 is surely atomized, so that the combustibility of the liquid fuel 24 is improved. Further, since the liquid fuel tank 195 is fitted to the tapered surface of the two-fluid spray nozzle 38 by the tapered surface portion of the liquid fuel tank 19 (the outer portion 2 1 b-1 of the lower surface 2 1 b of the bottom portion 2 1 ) The inner surface 38 8 ) is placed on the two-fluid spray nozzle 38 in a state in which it is abutted, so that the liquid fuel tank 19 and the central axis of the two-fluid spray nozzle 38 are easily aligned. Therefore, since the liquid fuel wastes 19 are not formed on one side, the width of the atomizing air flow path 28 is uniformly formed in the circumferential direction, and the atomization air flow path 28 can be uniformly formed in the circumferential direction. The flow of gas 46 thus ensures the symmetry (i.e., the symmetry of the fire) of the spray of liquid fuel 24 from the spray holes 44 of the two-fluid spray nozzle 38. Moreover, since the groove 81 of the bottom portion 21 of the liquid fuel tank 19 is formed by the direction of the wiring along the circumference of the two-fluid confluence space portion 43 from -50 to 200824793, the two-fluid confluence is thereby formed. The space portion 43 is formed by mixing the atomizing air 46 with the liquid fuel 24, so that the liquid fuel 24 and the atomizing air 46 are more reliably mixed. Therefore, the liquid fuel 24 injected from the spray hole 44 of the two-fluid spray nozzle 38 can be more reliably atomized to further improve the combustibility of the liquid fuel 24. Further, since the grooves 81 of the bottom portion 21 of the liquid fuel tank 19 are formed in a plurality of positions in a rotationally symmetrical positional relationship around the central axis of the two-fluid joint space portion 43, the spray from the two-fluid spray nozzle 38 is formed. The amount of distribution of the hole 44 in the circumferential direction of the sprayed liquid fuel 24 becomes uniform, and the combustibility of the liquid fuel 24 can be improved. Further, in the two-fluid spray combustion apparatus of the fourth embodiment, the liquid fuel tank 1 is pressed downward by the coil spring 36 (see Fig. 4), whereby the bottom 2 1 of the liquid fuel tank 19 is doubled. The fluid spray nozzle 38 is pressed to form a tapered surface portion (outer portion 211)-1) of the bottom portion 21 of the fuel tank 19 and a tapered surface (inner surface 38a) of the two-fluid spray nozzle 38, thereby preventing A gap is formed between the contact faces 21b-1, 38a. Therefore, it is possible to prevent the atomizing air 46 from flowing to a portion other than the groove 81, and to sufficiently perform the spraying effect of the wide area due to the groove 81. <Embodiment 6> FIG. 10(a) is a longitudinal cross-sectional view showing a structure of a lower portion of a two-fluid atomizer of a two-fluid spray burner according to Embodiment 6 of the present invention, and FIG. b) is a cross-sectional view of the LL line end of Fig. 10(a) -51 - 200824793. As shown in Fig. 1, in the two-fluid spray 12 of the sixth embodiment, the inner surface (upper surface) 21a of the bottom portion 21 of the liquid fuel tank 19 is a tapered (inverted conical) tapered surface at the center ( A fine liquid fuel outflow hole 22 is formed at an apex position of the inverted cone-shaped tapered surface. Further, the outer surface (lower surface) 2 1 b of the bottom surface 2 1 of the liquid fuel tank 19 is also a tapered (inverted conical) tapered surface. On the other hand, the two-fluid spray nozzle 38 does not have an atomizing air introduction portion (see Fig. 7), and is formed integrally with the atomizer outer cylinder 27 at the lower end of the atomizer outer cylinder 27 (may be welded or the like to fix another One person). The two-fluid spray nozzle 38 has a tapered surface (inverted conical shape) on the inner surface (upper surface) 38a. On the lower end side of the outer peripheral surface 20b of the side portion 20 of the liquid fuel tank 19, a plurality of (four in the illustrated example) support portions 91 are provided. The support portions 9 1 are disposed at equal intervals in the circumferential direction of the side portion 20, and the outer portion 91 a-1 of the lower surface 9 1 a is inclined inward along the inner surface 38a of the two-fluid spray nozzle 38. tapered surface. Therefore, since the liquid fuel tank 196 is supported in such a manner that the outer portion 91a-1 of the lower surface 91a of the support portion 91 is fitted into the inner surface 38a of the two-fluid spray nozzle 38, as a result, in the liquid fuel Between the outer surface 2 1 a of the bottom portion 2 1 of the groove 1 9 and the inner surface 38 8a of the two-fluid spray nozzle 38, a sharp (inverted conical) gap is secured, which is the atomizing air flow path 92. . In other words, the outer first atomizing air flow path 28 and the inner two-fluid combining space portion 43 communicate with each other via the second atomizing air flow path 92. The two-fluid confluence space portion 43 is formed by the inner surface 38a - 52 - 200824793 of the tapered structure, and the micro-spray hole 44 formed in the central portion of the two-fluid spray nozzle 38 forms the two-fluid confluence ( The vertex position of the inverted conical space portion 43 is the flow space portion 43. In other words, the two-fluid merging space portion 43 flows out of the hole 22 in a plane view (the diameter of the upper surface is gradually reduced as the diameter toward the spray hole 44 is reduced to the ##化空菊菊流路28 The lower mist passes through the atomizing air circulation portion air flow path 92 between the support portions 91, and is guided to the two-fluid junction name two-fluid junction space portion 43 and the liquid-fuel tank j 9 hole 2 2 . The liquid fuel 24 forms a conflict and the result is that the body fuel 2 4 is ejected from the two-fluid gas g 44 to the combustion space portion 13 by the atomizing air 46 by the atomizing air 46. The two-fluid atomizer 12 of Fig. 10 is the same as the two-fluid atomizer 12 of Fig. 4. The structure of the double portion of the two-fluid spray combustion apparatus of the sixth embodiment is the same as that of Figs. 1 to 3 The apparatus 1 1 of the figure is the same. The same effect can be obtained by the two-fluid spray of the sixth embodiment of the present invention, as well as the other effects of Example 1. That is, the two-fluid from the sixth embodiment of the present embodiment The liquid fuel outflow hole 22 flows out and flows into the double-flow conical space Between the central portion 43 in fluid communication with the double bonded to the liquid fuel in the bit line) is circular, its straight configuration. The air 46 is supplied to the atomizing portion 43 by the air 46, and the liquid fuel flows out (mixed). In the state of being atomized, the other part of the spray hole of the nozzle 38 is constructed, and the two-fluid spray combustion combustion apparatus other than the present fluid atomizer can be obtained from the spray combustion apparatus of the above embodiment, and the body flow space portion 43-53 - The liquid fuel 24 of 200824793 flows into the lower portion of the first atomizing gas flow path 28, and flows to the second atomizing air flow portion 93 between the passing portion and the supporting atomizing portion 93. The path 92 is guided to the atomizing air 46 of the two-fluid merging space portion 43 and merges with the atomizing air 46 from the atomizing air portion 43 to be sprayed from the spray hole 44. The liquid fuel 24' flowing out of the liquid fuel outflow port 22 of the liquid fuel tank 19 is mixed with the atomizing air 46 in the two-fluid combining space portion 43, and then ejected from the spray hole 44 of the two-fluid spray nozzle 38. Therefore, compared with the case where the two-fluid combining space portion 43 is not provided, since the wide angle of the spray of the liquid fuel 24 becomes large, the liquid fuel 24 is surely atomized, so that the combustibility of the liquid fuel is improved. <Embodiment 7> FIG. 1 is a longitudinal cross-sectional view showing a structure of a two-fluid spray combustion apparatus according to Embodiment 7 of the present invention, and FIG. 1 is a cross-sectional view of the M-Μ line end of FIG. Sectional view. As shown in Figs. 1 and 2, in the two-fluid spray combustion apparatus of the seventh embodiment, the flat plate 18 is formed into a perforated plate. That is, a plurality of combustion air flow holes 1 〇 1 are formed in the annular flat plate 18. Each of the combustion air passage holes 101 is provided inside the combustion air passage hole 52 (the first cylinder 16). Therefore, the combustion air 50 flows to the lower combustion air 50 in the combustion air flow path 15 mainly through the combustion air circulation hole 5 2 on the outer peripheral side of the flat plate 18, and flows to the outside of the first cylinder 16 After the combustion air flow path 5 3 flows into the combustion space portion 13 , a portion of -54 - 200824793 flows into the combustion space portion 1 through the combustion air flow hole 1 ο 1 inside the first cylinder 16 . . Further, the other portions of the two-fluid spray combustion apparatus 11 of Figs. 11 and 12 are the same as those of the two-fluid spray combustion apparatus 1 1 of Figs. 1 to 3 . According to the two-fluid spray combustion apparatus of the seventh embodiment, the following effects can be obtained, and the same operational effects as those of the first embodiment can be obtained. In other words, in the two-fluid spray combustion apparatus of the seventh embodiment, a plurality of other combustion air flow holes 1 〇1 are formed on the flat plate 18 inside the combustion air flow hole 52. Since a part of the combustion air 50 passes through the combustion air circulation holes 110, it is possible to suppress the generation of combustion air near the lower surface of the flat plate 18 by the flow of the combustion air 50. The accumulated water flow inhibits the adhesion of coal ash to the underside of the flat plate 18. Further, since the low-temperature combustion air flows to the vicinity of the two-fluid spray nozzle 38 through the other combustion air flow holes 1 〇1, it is also possible to obtain the so-called radiant heat which is easily ignited by the combustion air. The effect of the superheated two-fluid spray nozzle 38. <Embodiment 8> Fig. 3 is a schematic diagram showing a schematic diagram of a fuel cell power generation system according to an eighth embodiment of the present invention. Fig. 1 is a view showing an example of a case where the two-fluid spray combustion apparatus of any of the above-described embodiments 1 to 7 is used as a heat source of a recombiner of a fuel cell power generation system. -55- 200824793 As shown in Fig. 3, 'the combustion furnace 1 1 2 is provided on the upper portion of the reformer 111, and any two-fluid spray of the above-described first to seventh embodiments is inserted from the upper surface of the combustion furnace 1 1 2 Combustion device 1 1. The two-fluid spray combustion device 11 is connected to a liquid fuel supply system, an atomization air supply system, and a combustion air supply system, which are not shown. Further, the details of the two-fluid spray combustion apparatus 1 are as described above. In the recombiner 111, a raw material supply system (not shown) is connected, and a reconstituted fuel such as a gas or a kerosene which is a raw material for recombination is supplied from the raw material supply system. Further, in the reformer 111, the reforming fuel is reconstituted by steam by utilizing the heat of a large amount of combustion exhaust gas generated by the combustion of the two-fluid spray combustion device 11, thereby generating a reformed gas (hydrogen-rich gas). The reformed gas generated by the reformer 111 is supplied to the anode side of the fuel cell 1 13 as a fuel for power generation. In the fuel cell i i 3, the reforming gas (hydrogen) supplied to the anode side and the air (oxygen) supplied to the cathode side cause an electrochemical reaction, thereby generating electricity. The recombination gas which is not used for power generation in the fuel cell 133 is returned to the two-fluid spray combustion apparatus 11, and is used as a gas fuel for combustion of the combustion apparatus. The fuel cell power generation system according to the eighth embodiment is used. Since the two-fluid spray combustion apparatus 1 1 of the above-described Embodiments 1 to 7 is used as a heat source of the recombiner 1 1 1 , the two-fluid spray combustion apparatus 1 1 exhibits the above-described excellent effects, thereby enabling the above-described excellent effects. Reaching the performance improvement and cost reduction of the recombiner 11 1 . Further, although only one liquid fuel outflow hole 22 is provided in the liquid fuel tank 19, the present invention is not limited thereto, and a plurality of liquid fuel outflow holes 22 may be provided. Further, although the liquid fuel outflow hole is provided at the bottom of the liquid fuel tank in the above, it is not necessarily limited thereto, and a liquid fuel outflow hole may be provided in the side portion of the liquid fuel tank. That is, the liquid fuel tank has a cylindrical side portion and a bottom portion provided at a lower end of the side portion, and stores the liquid fuel supplied from the liquid fuel supply pipe, and causes the previously stored liquid fuel to be positioned at a position The liquid fuel that has been stored is further below the liquid level, and one or a plurality of liquid fuel outflow holes that are opened at the side or the bottom may be configured to flow out. Further, although the liquid fuel tank is provided in the outer cylinder of the sprayer, the liquid fuel tank is not limited thereto. For example, a liquid fuel tank may be provided outside the outer cylinder of the sprayer to flow out from the liquid fuel outlet hole of the liquid fuel tank. The liquid fuel is supplied to the merging space portion together with the atomizing gas via a pipe or the like. Further, in the above, the upper end side of the open liquid fuel tank, the pressure of the atomizing air flowing into the atomizing air flow path acts on the liquid surface of the liquid fuel stored in the liquid fuel tank, but it is not necessarily In this case, for example, the upper end side of the liquid fuel tank may be opened to the atmosphere. That is, the liquid fuel flowing out of the liquid fuel supply pipe is temporarily stored in the liquid fuel tank by the pressure balance between the inside and the outside of the liquid fuel tank (the two-fluid joint space portion), and the liquid column head of the liquid fuel is generated. The configuration in which the stored liquid fuel continuously flows out from the liquid fuel outflow hole is also possible. Further, although in the above, the groove is provided in two in the form of a twist, and the conflict type -57 - 200824793 is set to four, it is not limited thereto, and may be an appropriate number. However, in order to ensure the uniformity of the distribution of the liquid fuel spray amount in the circumferential direction, it is desirable that the number of the groove is two or more in the cyclone type, and the number of the groove in the collision type is three or more. In addition, the structure (invention) of the above-mentioned 'providing a flat plate (shading plate), a first cylinder for combustion air supply, a delay, and a second cylinder for preventing water accumulation is not limited to spraying the liquid as described above. A two-fluid spray burner equipped with a dual φ fluid atomizer for fuel and atomization gas as a fuel injector can also be applied to a fuel injector equipped with a fuel injector that only injects liquid fuel and a fuel injector that injects gaseous fuel. Further, in the above description, the projections are formed on the outer circumference of the flat plate (the shutter), whereby the combustion air flow holes are provided on the outer peripheral side of the flat plate (shutter), but the present invention is not limited thereto, and is applied to the flat plate (shutter). In the outer peripheral side, a combustion air passage hole may be provided. For example, a hole may be formed in a peripheral portion of the flat plate (shutter), and a combustion air flow hole may be provided on the outer peripheral side of the shutter. Φ Further, although the flat plate (shutter) is a horizontal plate in the above, the present invention is not limited thereto, and the flat plate (shading plate) may be inclined obliquely downward from the inner side toward the outer side. For example, as shown in Fig. 1 1 in a hypothetical illustration of the center line, the flat plate 1 8 ^ may be conical. In the case of the inclined flat plate, not only the combustion air is moved away from the fuel injection nozzle (two-fluid spray nozzle 38), but also the same function as the first cylinder for delaying the supply of the combustion air. [Industrial Applicability] The present invention relates to a two-component spray combustion in which a liquid fuel is atomized by a gas for atomization, in the state of -58-200824793, in a state where the supply flow rate of the liquid fuel is small. The two-fluid spray for the recombiner. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view showing the structure of a solid mist combustion apparatus according to the present invention. Fig. 2 is a third view of the AA line end of Fig. 1 and Fig. 4 (a) of the BB line end of Fig. 1 is an enlarged vertical CC line end shown in the two-fluid atomizer equipped with the first device. Cross section view. Fig. 5(a) is a longitudinal sectional view showing an enlarged view of the double flow, and Fig. 5(b) is a plan view (( ) showing a nozzle equipped with a two-fluid spray nozzle. Fig. 6(a) is a view showing a fluid spray burner according to the present invention. a cross-sectional view of the two-fluid atomizer, (b) is a plan view showing the spray nozzle shown in the above (I (I) Figure 7 (a) is a cross-sectional view of the two-fluid atomizer for the present fluid spray burner, (b) It is a cross-sectional view of a two-fluid spray which is extremely useful in a fuel cell combustion apparatus which can be used even if it is used in the above-mentioned apparatus, and is a cross-sectional view. (b) is a cross-flow 3 arrow of the longitudinal two-fluid atomizer of the configuration of the lower side of the second embodiment of the second embodiment of the second embodiment of the present invention. Direction view). The double fluid of the vertical two-fluid atomizer of the structure of the lower side portion of the embodiment of the present invention - 59 - 200824793 The top view shown by the spray nozzle (the arrow direction view of (a)). Figure 8(a) is a longitudinal sectional view showing the structure of the lower portion of the two-fluid atomizer of the two-fluid spray burner of the fourth embodiment of the present invention (a longitudinal sectional view of the 〇-0 line end of (b)) (1) is a bottom view (in the direction of the arrow direction of (aβ)) shown in the liquid fuel tank provided with the two-fluid atomizer, and (c) is a view of the arrow direction of (b), (d) It is a cross-sectional view of the JJ line end of (a). Fig. 9(a) is a longitudinal sectional view showing the structure of the lower portion of the two-fluid atomizer of the two-fluid spray burner of the fifth embodiment of the present invention, ((b) a cross-sectional view of the KK line end), (b) is a bottom view showing the liquid fuel tank provided in the two-fluid atomizer (L-direction view of (a)), and (c) is a cross-sectional view of the M-Μ line end of (a). Fig. 10(a) is a vertical cross-sectional view showing the structure of the lower side portion of the two-fluid atomizer of the two-fluid spray burner according to the sixth embodiment of the present invention, (b) is the transverse direction of the LL line end of (a) Sectional view. Figure 11 is a longitudinal cross-sectional view showing the structure of a two-fluid spray combustion apparatus according to Embodiment 7 of the present invention. • Figure 12 is a cross-sectional view of the M-M line end of Figure 11. Fig. 1 is a schematic diagram showing a schematic diagram of a fuel cell power generation system according to an eighth embodiment of the present invention. Fig. 14(a) is a view showing a state in which a liquid fuel is intermittently discharged from a front end portion of a liquid fuel supply pipe in a conventional two-fluid spray combustion apparatus. (b) shows a conventional two-fluid spray combustion apparatus. Medium, liquid 60 200824793 A diagram showing the form in which the fuel supply flow rate changes greatly. [Explanation of main component symbols] 11 : Two-fluid spray combustion device, 1 2 : Two-fluid atomizer • 1 3 : Combustion space unit 1 4 : Gas fuel flow path φ 1 5 : Combustion air flow path 16 : First cylinder 17 : 2nd cylinder 1 8 : Flat plate 1 9 : Liquid fuel tank 2 0 : Side portion 20a : Inner peripheral surface 2 0 b : Outer peripheral surface ® 2 1 : Bottom portion 21a : Inner surface (upper surface) 21 b : Outside (below) & 2 lb-1 : outer portion 2 1b-2 : inner portion 22 : liquid fuel outflow hole 23 : liquid surface 24 : liquid fuel 24A : profile portion - 61 - 200824793 25 : liquid fuel supply pipe 25A : front end portion (lower end Part 26: Gasket 27: Sprayer outer cylinder * 27Α: lower end '27Β: upper end 2 8 : atomizing air flow path • 29: air inflow hole 3 〇: atomizing air supply pipe 3 0Α : front end 3 1 : cover 3 2, 3 3 : threaded portion 3 1 A : lower portion 3 1 B : segment 3 4 : 0 ring # 3 5 : spacer 3 6 : coil spring 3 7 : atomization gas introduction portion 4 37a : upper surface 37b : inner peripheral surface 3 8 : two-fluid spray nozzle 3 8a : inner surface (top surface) 3 9 : nozzle body portion 40 : groove - 62 - 200824793 41 : space portion 42 : space portion (recessed portion 43: Two-fluid confluence space portion 44: spray hole #45: clearance '46: atomizing air 47: gas fuel supply pipe • 48: combustion device outer cylinder 48a: inner circumferential surface 49: gaseous fuel 5 〇: combustion air 51: Protrusion 5 2 : Combustion air flow hole 5 3 : Combustion air flow path 54 : Mars plug _ 61 : Groove 81 : Groove 91 : Support portion • 9 1 a : Below 9 1a-l : Outer portion 92 : Atomizing air flow path 93: atomizing air circulation part 1 〇1 : combustion air flow hole 1 1 1 : Recombiner-63- 200824793 112: m mm 1 1 3 : Fuel cell

-64-64

Claims (1)

200824793 十、申請專利範圍 1. 一種雙流體噴霧燃燒裝置，係在以霧化用氣 霧化液體燃料使其燃燒的雙流體噴霧燃燒裝置，其特 ^ 具有筒狀的側部和設在該側部之下端的底部，且 • 貯留著從液體燃料供給管所供給的液體燃料，並且位 該已貯留的液體燃料之液面更下方，使前述已貯留的 • 燃料，從開設在前述側部或前述底部的一個或複數個 體燃料流出孔流出之構造的液體燃料槽， 以前述霧化用氣體來霧化從該液體燃料槽之前述 燃料流出孔流出的液體燃料使其燃燒的構造。 2. 如申請專利範圍第1項所記載的雙流體噴霧 裝置，其中， 前述液體燃料流出孔係開設在前述液體燃料槽的 • 具備：形成在前述液體燃料槽之側部與圍繞該側 周圍的外筒之間的筒狀霧化用氣體流路；和 設置在前述外筒的下端部，具有下側的噴嘴本體 ^ 上側的霧化用氣體導入部，且將位在前述液體燃料流 之下方的雙流體合流空間部形成在前述噴嘴本體部以 述霧化用氣體導入部之中央部，且將連通至該雙流體 空間部的一個或複數個的噴霧孔形成在前述噴嘴本體 且將連通前述霧化用氣體流路與前述雙流體合流空間 一個或複數個的溝形成在前述霧化用氣體導入部之構 體來 徵爲 具備 在比 液體 的液 液體 燃燒 底部 部之 部與 出孔 及前 合流 部， 部的 造的 -65 - 200824793 雙流體噴霧噴嘴， 前述液體燃料槽係設置在前述霧化用氣體導入部上， 從前述液體燃料流出孔流出並流入到前述雙流體合流 空間部的液體燃料，是構成與在前述霧化用氣體流路流到 下方之後，在前述霧化用氣體導入部流經前述溝被引導到 前述雙流體合流空間部的霧化用氣體，在前述雙流體合流 空間部合流之後，與該霧化用氣體一起從前述噴霧孔被噴 霧。 3. 如申請專利範圍第2項所記載的雙流體噴霧燃燒 裝置，其中， 在前述液體燃料槽之底部的下面係形成尖細的錐面部 且在前述霧化用氣體導入部的上面亦形成尖細的錐面 部， 前述液體燃料槽，係在以前述液體燃料槽的錐面部嵌 入到前述霧化用氣體導入部之錐面部的方式抵接的狀態下 ，設置在前述霧化用氣體導入部上。 4. 如申請專利範圍第1項所記載的雙流體噴霧燃燒 裝置，其中， 前述液體燃料流出孔係開設在前述液體燃料槽的底部 具備：形成在前述液體燃料槽之側部與圍繞該側部之 周圍的外筒之間的筒狀霧化用氣體流路；和 設置在前述外筒的下端部，將位在前述液體燃料流出 -66 - 200824793 孔之下方的雙流體合流空間部形成在中央部，且形成連通 至該雙流體合流空間部的一個或複數個的噴霧孔之構造的 雙流體噴霧噴嘴， 在前述液體燃料槽之底部的下面形成尖細的錐面部， 且在前述雙流體噴霧噴嘴的上面亦形成尖細的錐面部 前述液體燃料槽，係在以前述液體燃料槽的錐面部嵌 入到前述雙流體噴霧噴嘴之錐面部的方式抵接的狀態下， 設置在前述雙流體噴霧噴嘴上， 在前述液體燃料槽之底部，係形成連通前述霧化用氣 體流路與前述雙流體合流空間部的一個或複數個的溝， 從前述液體燃料流出孔流出並流入到前述雙流體合流 空間部的液體燃料，是構成與在前述霧化用氣體流路流到 下方之後，在前述液體燃料槽之底部流經前述溝被引導到 前述雙流體合流空間部的霧化用氣體，在前述雙流體合流 空間部合流之後，與該霧化用氣體一起從前述噴霧孔被噴 霧之構造。 5. 如申請專利範圍第2項〜第4項中任一項所記載 的雙流體噴霧燃燒裝置，其中， 前述雙流體合流空間部係上面視之爲圓形狀， 前述霧化用氣體導入部的溝或前述液體燃料槽之底部 的溝，係在上面視之，形成沿著前述雙流體合流空間部之 圓周的接線方向。 6. 如申請專利範圍第2項〜第4項中任一項所記載 -67- 200824793 的雙流體噴霧燃燒裝置，其中， 前述雙流體合流空間部係上面視之爲圓形狀， 前述霧化用氣體導入部的溝或前述液體燃料槽之底部 的溝’係在上面視之，形成沿著前述雙流體合流空間部之 徑向。 ^ 7 ·如申請專利範圍第5項或第6項所記載的雙流體 噴霧燃燒裝置，其中， • 前述霧化用氣體導入部的溝或前述液體燃料槽之底部 的溝，係以在前述雙流體合流空間部之中心軸周呈旋轉對 稱之位置關係的方式形成複數個。 8 ·如申請專利範圍第2項〜第7項中任一項所記載 的雙流體噴霧燃燒裝置，其中， 藉由具備往下按壓前述液體燃料槽的按壓構件， 使前述液體燃料槽之底部，形成朝前述雙流體噴霧噴 嘴的霧化用氣體導入部按壓而密著的構造， • 或者，使前述液體燃料槽之底部，形成朝前述雙流體 噴霧噴嘴按壓而密著的構造。 m 9.如申請專利範圍第1項所記載的雙流體噴霧燃燒 ^ 裝置，其中， 前述液體燃料流出孔係開設在前述液體燃料槽的底部 5 具備：形成在前述液體燃料槽之側部與圍繞該側部之 周圍的外筒之間的筒狀第1霧化用氣體流路；和 設置在前述外筒的下端部，將位在前述液體燃料流出 -68- 200824793 孔之下方的雙流體合流空間部形成在中央部，且形成連通 至該雙流體合流空間部的一個或複數個的噴霧孔之構造的 雙流體噴霧噴嘴， 在前述雙流體噴霧噴嘴的上面係形成尖細的錐面部， 在前述液體燃料槽之底部的下面亦形成尖細的錐面部 在前述液體燃料槽之側部係突設複數個支撐部，且在 該等之支撐部的下面亦形成錐面部， 前述液體燃料槽，係在以前述支撐部的錐面部嵌入到 前述雙流體噴霧噴嘴之錐面部的方式抵接的狀態下，設置 在前述雙流體噴霧噴嘴上， 以藉由前述支撐部，在前述液體燃料槽的錐面部與前 述雙流體噴霧噴嘴的錐面部之間所確保的間隙，作爲第2 霧化用氣體流路， 從前述液體燃料流出孔流出並流入到前述雙流體合流 空間部的液體燃料，是構成與在前述第1霧化用氣體流路 流到下方之後，通過前述支撐部之間的霧化用氣體流通部 ，流經前述第2霧化用氣體流路被引導到前述雙流體合流 空間部的霧化用氣體，在前述雙流體合流空間部合流之後 ，與該霧化用氣體一起從前述噴霧孔被噴霧之構造。 10.如申請專利範圍第2項〜第9項中任一項所記載 的雙流體噴霧燃燒裝置，其中， 前述雙流體合流空間部係爲倒圓錐狀，在該倒圓錐狀 之空間部的頂點位置，形成有前述噴霧孔。 -69- 200824793 η.如申請專利範圍第2項〜第1 〇項中任一項所記 載的雙流體噴霧燃燒裝置，其中， 具備形成在前述外筒與圍繞前述外筒之周圍的氣體燃 料供給管之間的筒狀氣體燃料流路， 氣體\燃料是構成在前述氣體燃料流路流到下方，從前 述氣體燃料流路之下端被噴射而燃燒。 1 2.如申請專利範圍第1項〜第1 1項中任一項所記 載的雙流體噴霧燃燒裝置，其中， 前述液體燃料供給管的前端部，是連接在前述液體燃 料槽之側部的內周面。200824793 X. Patent application scope 1. A two-fluid spray combustion device is a two-fluid spray combustion device which is used for atomizing liquid fuel to atomize it, and has a cylindrical side portion and is disposed on the side The bottom of the lower end of the portion, and • the liquid fuel supplied from the liquid fuel supply pipe is stored, and the level of the liquid fuel that has been stored is lower than the liquid level, so that the previously stored fuel is opened from the side or A liquid fuel tank having a structure in which one or a plurality of individual fuel outflow holes are discharged from the bottom portion, and a structure in which the liquid fuel flowing out from the fuel outflow hole of the liquid fuel tank is atomized by the atomizing gas. 2. The two-fluid spray device according to claim 1, wherein the liquid fuel outflow hole is provided in the liquid fuel tank, and is provided on a side portion of the liquid fuel tank and around the side of the liquid fuel tank. a cylindrical atomization gas flow path between the outer cylinders; and an atomization gas introduction portion provided on the lower side of the nozzle body at a lower end portion of the outer cylinder, and positioned below the liquid fuel flow The two-fluid merging space portion is formed in the nozzle body portion at a central portion of the atomization gas introduction portion, and one or a plurality of spray holes that communicate with the two-fluid space portion are formed in the nozzle body and communicate with the aforementioned The gas flow path for atomization and one or a plurality of grooves of the two-fluid merging space are formed in the structure of the atomizing gas introduction portion, and are provided to have a portion and a hole and a front portion of the bottom portion of the liquid liquid combustion of the liquid. In the two-fluid spray nozzle, the liquid fuel tank is disposed on the atomizing gas introduction portion, and the former The liquid fuel that has flowed out of the liquid fuel outflow hole and flows into the two-fluid merging space portion is configured to flow to the lower portion of the atomizing gas passage, and then flows through the groove to the atomizing gas introduction portion. The atomizing gas in the two-fluid merging space portion is merged with the atomizing gas and sprayed from the spray hole after the two-fluid merging space portion merges. 3. The two-fluid spray combustion apparatus according to claim 2, wherein a tapered tapered surface is formed on a lower surface of the bottom of the liquid fuel tank, and a tip is formed on the upper surface of the atomizing gas introduction portion. In the thin tapered surface portion, the liquid fuel tank is provided on the atomizing gas introduction portion in a state in which the tapered surface portion of the liquid fuel tank is fitted into the tapered surface portion of the atomizing gas introduction portion. . 4. The two-fluid spray combustion apparatus according to claim 1, wherein the liquid fuel outflow hole is provided at a bottom portion of the liquid fuel tank, and is formed at a side portion of the liquid fuel tank and surrounding the side portion a cylindrical atomizing gas flow path between the outer cylinders; and a lower end portion of the outer cylinder, and a two-fluid confluence space portion located below the liquid fuel outflow - 66 - 200824793 hole is formed in the center And a two-fluid spray nozzle forming a structure of one or a plurality of spray holes connected to the two-fluid joint space portion, forming a tapered tapered surface under the bottom of the liquid fuel tank, and in the two-fluid spray The liquid fuel tank having a tapered tapered surface formed on the upper surface of the nozzle is provided in the two-fluid spray nozzle in a state in which the tapered surface portion of the liquid fuel tank is fitted into the tapered surface portion of the two-fluid spray nozzle. The bottom of the liquid fuel tank is formed to communicate with the atomizing gas flow path and the two-fluid combining space portion. Or a plurality of grooves, the liquid fuel flowing out from the liquid fuel outflow hole and flowing into the two-fluid mixing space portion is configured to be at the bottom of the liquid fuel tank after flowing to the atomizing gas flow path below The atomizing gas that has been guided to the two-fluid combining space portion through the groove is merged with the atomizing gas and sprayed from the spray hole after the two-fluid combining space portion merges. 5. The two-fluid spray combustion apparatus according to any one of the second aspect of the present invention, wherein the two-fluid convection space unit has a circular shape on the upper surface, and the atomization gas introduction unit The groove or the groove at the bottom of the liquid fuel tank is formed on the upper side to form a wiring direction along the circumference of the two-fluid combining space portion. 6. The two-fluid spray combustion apparatus according to any one of the above-mentioned claims, wherein the two-fluid convection space unit has a circular shape as described above, and the atomization is used for the atomization. The groove of the gas introduction portion or the groove at the bottom of the liquid fuel tank is formed in the upper direction as viewed in the radial direction of the two-fluid junction space portion. The two-fluid spray combustion apparatus according to the fifth or sixth aspect of the invention, wherein the groove of the atomizing gas introduction portion or the groove at the bottom of the liquid fuel tank is in the double A plurality of the central axis circumferences of the fluid confluence space portion are formed in a rotationally symmetrical positional relationship. The two-fluid spray combustion apparatus according to any one of the above-mentioned claims, wherein the bottom of the liquid fuel tank is provided by a pressing member that presses the liquid fuel tank downward; A structure in which the atomization gas introduction portion of the two-fluid spray nozzle is pressed and adhered is formed, or the bottom portion of the liquid fuel tank is formed to be pressed against the two-fluid spray nozzle. The two-fluid spray combustion apparatus according to claim 1, wherein the liquid fuel outflow hole is provided in a bottom portion 5 of the liquid fuel tank, and is formed at a side portion and a periphery of the liquid fuel tank. a cylindrical first atomizing gas flow path between the outer cylinders around the side portion; and a lower end portion of the outer cylinder, and a two-fluid confluence located below the liquid fuel outflow-68-200824793 hole a two-fluid spray nozzle having a space portion formed at a central portion and configured to communicate with one or a plurality of spray holes of the two-fluid joint space portion, and a tapered surface portion is formed on the upper surface of the two-fluid spray nozzle. a lower tapered surface portion of the bottom portion of the liquid fuel tank is formed with a plurality of support portions on a side portion of the liquid fuel tank, and a tapered surface portion is formed on a lower surface of the support portion, and the liquid fuel tank is Provided in the above-described two-fluid spray nozzle in a state in which the tapered surface portion of the support portion is fitted into the tapered surface portion of the two-fluid spray nozzle Further, a gap secured between the tapered surface portion of the liquid fuel tank and the tapered surface portion of the two-fluid spray nozzle is performed as a second atomizing gas flow path from the liquid fuel outflow hole by the support portion The liquid fuel that has flowed into the two-fluid merging space portion is configured to flow through the second atomizing gas flow path, and then flows through the atomizing gas flow portion between the support portions. The atomization gas passage is guided to the atomization gas in the two-fluid junction space portion, and after the two-fluid junction space portion is merged, the atomization gas is sprayed from the spray hole together with the atomization gas. The two-fluid spray combustion apparatus according to any one of claims 2 to 9, wherein the two-fluid merging space portion has an inverted cone shape and is at an apex of the inverted conical space portion. At the position, the aforementioned spray holes are formed. The two-fluid spray combustion apparatus according to any one of the invention, wherein the outer cylinder and the gas fuel supply around the outer cylinder are provided. The tubular gas fuel flow path between the tubes, the gas/fuel is configured to flow downward in the gas fuel flow path, and is injected from the lower end of the gas fuel flow path to be combusted. The two-fluid spray combustion apparatus according to any one of the first aspect, wherein the front end of the liquid fuel supply pipe is connected to a side of the liquid fuel tank. Inner circumference. -70--70-
TW096129252A 2006-08-11 2007-08-08 Two-fluid spray burner TW200824793A (en)

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