200821505 九、發明說明 【發明所屬之技術領域】 本發明係有關一種燃燒裝置，應用於在以霧化用氣體 來霧化例如液體燃料之狀態下使其燃燒的雙流體噴霧燃燒 裝置等極爲有用者。 【先前技術】 Φ 雙流體噴霧燃燒裝置係爲在以霧化用氣體來霧化液體 燃料之狀態下使其燃燒者’例如作爲燃料發電系統之重組 器的熱源使用。此時，在重組器，係利用因在雙流體噴霧 燃燒裝置的燃燒所產生的燃燒排氣之熱，將甲烷氣和燈油 等的重組用燃料進行水蒸氣重組，藉此產生重組氣（富氫 氣）’以該重組氣作爲發電用的燃料，供給到燃料電池。 而且’在習知的雙流體噴霧燃燒裝置，係採用以加熱 大容量的重組器等之目的’產生大量之燃燒排氣的情況下 • ，將空氣的供給分成兩段的方式。此時，在第1段，係將 來自空氣供給源的供給空氣混合到從雙流體噴霧燃燒裝置 之噴嘴被噴霧的燈油等之液體燃料使其燃燒，在第2段， 係對前述第1段的燃燒所產生的燃燒排氣，在不同於前述 第1段之空氣供給場所的另一個場所，從另一個空氣供給 源供給空氣，藉此使其產生大量的燃燒排氣。 〔專利文獻1〕 日本特開第2002-224592號公報 【發明內容】 -5- 200821505 〔發明欲解決之課題〕 但是，在上述習知的雙流體噴霧 第1段的空氣供給之燃燒，在第2段 段的場所來供給空氣，因此空氣供給 體大型化。再者，若不作成對第1段 空氣的構造，而一次供給大量的空氣 氣，由於火炎會因該大量的空氣被過 φ 料之蒸發速度下降和燃料與氧的反應 變長，易產生未燃氣體和未燃液體燃 起失火之虞。 因此，本發明係有鑑於上述之事 種能以簡易的構造產生大量的燃燒排 未燃氣體之產生和失火之虞，進而能 燒排氣之流量分佈的均勻化等的雙流 燃燒裝置。 〔用以解決課題的手段〕 解決上述課題的第1發明之燃燒 器的燃料噴射噴嘴，朝該燃料噴射噴 部，噴射燃料（氣體燃料、液體燃料 用氣體的雙流體）使其燃燒的燃燒裝 具備：形成在前述燃料噴射器與 之周圍的燃燒裝置外筒之間的筒狀燃 分隔該燃燒用空氣流路與前述燃 S燒裝置，除了藉由 ，由於在不同於第1 構造複雜化，裝置整 與第2段分開來供給 ，產生大量的燃燒排 度冷卻，造成液體燃 速度降低，因此火炎 料（煙霧），亦有引 項，其課題爲提供一 氣，且亦不會有引起 令火炎之短炎化和燃 體噴霧燃燒裝置等之 裝置，係從燃料噴射 嘴之下方的燃燒空間 ，或液體燃料與霧化 置，其特徵爲= 圍繞前述燃料噴射器 燒用空氣流路；和 燒空間部的遮板；和 -6 - 200821505 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。 又，第2發明之燃燒裝置，係第1發明之燃燒 其特徵爲= φ 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發明之燃燒裝置，係第2發明之燃燒 其特徵爲 • 將從前述遮板之下面朝下方延伸的防回水用之 一個或複數個設置在前述燃燒用空氣供給延遲用之 側。 又，第4發明之燃燒裝置，係第1〜第3發明 發明之燃燒裝置，其特徵爲： 在前述遮板，係在比前述燃燒用空氣流通孔更 成有其他的複數個燃燒用空氣流通孔。 又，第5發明之燃燒裝置，係第1〜第4發明 發明之燃燒裝置，其特徵爲： ，是構 側，藉 通孔流 裝置， 氣供給 連通前 構成在 他燃燒 裝置， 筒，以 筒的內 中任一 內側形 中任一 200821505 前述燃料噴射器係從前述燃料噴射噴嘴來噴射液體燃 料的噴射器， 在圍繞前述燃料噴射器之周圍的氣體燃料供給管與前 述燃料噴射器之間形成筒狀氣體燃料流路， 氣體燃料，係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到前述燃燒空間部而燃燒 〇 φ 又，第6發明之燃燒裝置，係第1〜第5發明中任一 發明之燃燒裝置，其特徵爲： 將中央部開設有流通孔的節流孔板設置在前述燃燒空 間部， 構成藉由前述節流孔板將在前述燃燒空間部流到下方 的燃燒用空氣，引導到前述燃燒空間部之中央部，使其通 過前述節流孔板的流通孔。 又’第7發明之燃燒裝置’係第6發明之燃燒裝置中 • ，其特徵爲： 在前述節流孔板之上側設置螺旋彈簧， 構成藉由前述螺旋彈簧將通過前述節流孔板之流通孔 的前述燃燒用空氣之流動，形成旋流。 又，第8發明之燃燒裝置，係第6〜第7發明中任一 發明之燃燒裝置，其特徵爲： 在卽〖fli孔板之上方’將在中央部開設有流通孔的多孔 板，設置在前述燃燒空間部， 構成藉由前述多孔板將在前述燃燒空間部流到下方的 -8- 200821505 一部份燃燒用空氣，引導到前述燃燒空間部之中央部 其通過前述多孔板的流通孔。 再者，上述第1〜第8發明中任一發明之燃燒裝 雙流體噴霧燃燒裝置的情況下，亦可爲如下形成雙流 霧燃燒裝置的構造。 即，第1構造，係第1〜第8發明中任一發明之 裝置，爲以霧化用氣體來霧化液體燃料使其燃燒的雙 φ 噴霧燃燒裝置，該雙流體噴霧燃燒裝置，其特徵爲： 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。 • 又，第2構造之雙流體噴霧燃燒裝置，係第1構 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 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 ，使 置爲 體噴 燃燒 流體 具備 在比 液體 的液 液體 造之 底部 部之 部與 出孔 及前 -9-[Technical Field] The present invention relates to a combustion apparatus which is extremely useful for a two-fluid spray combustion apparatus which is combusted in a state where a gas for atomization is atomized, for example, a liquid fuel. . [Prior Art] The Φ two-fluid spray combustion apparatus uses a burner such as a heat source of a recombiner of a fuel power generation system in a state where a liquid fuel is atomized by a gas for atomization. At this time, in the reformer, the recombination fuel such as methane gas and kerosene is reconstituted by steam by the heat of the combustion exhaust gas generated by the combustion of the two-fluid spray combustion device, thereby generating a reformed gas (hydrogen-rich gas). The 'recombinant gas is used as a fuel for power generation, and is supplied to a fuel cell. Further, in the case of the conventional two-fluid spray combustion apparatus, in the case where a large amount of combustion exhaust gas is generated for the purpose of heating a large-capacity reformer or the like, the supply of air is divided into two stages. At this time, in the first stage, the supply air from the air supply source is mixed with the liquid fuel such as kerosene sprayed from the nozzle of the two-fluid spray combustion apparatus, and the second stage is the first stage. The combustion exhaust gas generated by the combustion is supplied to the air from another air supply source at another place different from the air supply place of the first stage, thereby generating a large amount of combustion exhaust gas. [Patent Document 1] Japanese Laid-Open Patent Publication No. 2002-224592 [Draft of the Invention] -5-200821505 [Problem to be Solved by the Invention] However, the combustion of the air supply in the first stage of the above-described conventional two-fluid spray is in the first Air is supplied to the site at the second stage, so the air supply body is enlarged. In addition, if a large amount of air is supplied at a time without constructing the air in the first stage, the evaporation rate of the large amount of air passing through the φ material and the reaction between the fuel and the oxygen become longer due to the fire, which is likely to occur. Gas and unburned liquids ignite a fire. Therefore, the present invention has a double-flow combustion apparatus which can generate a large amount of combustion-free gas and a misfire in a simple structure, and can uniformize the flow distribution of the exhaust gas and the like. [Means for Solving the Problem] The fuel injection nozzle of the burner according to the first aspect of the present invention is a fuel injection nozzle that injects fuel (a two-fluid of a gas fuel or a liquid fuel gas) into the fuel injection nozzle. Provided that the cylindrical combustion between the fuel injector and the outer cylinder of the combustion device is separated from the combustion air flow passage and the combustion S burner, except that, because it is different from the first structure, The device is supplied separately from the second stage, generating a large amount of combustion exhaust cooling, resulting in a decrease in the liquid burning rate. Therefore, there is also an introduction to the pyrotechnic material (smoke), and the subject is to provide a gas, and there is no cause of inflammation. The device for short-inflammation and combustion-injection burners, etc., is a combustion space from below the fuel injection nozzle, or liquid fuel and atomization, characterized by = burning air flow around the fuel injector; and burning a shutter for the space portion; and -6 - 200821505 a combustion air passage hole provided on the outer peripheral side of the shutter, and the combustion air flow path flows downward to the combustion With the foregoing air into the blocked shutter, the shutter is guided to the outside periphery of this plate away from the fuel injection nozzle, the combustion stream by the combustion into the air space. Further, the combustion apparatus according to the second aspect of the invention is characterized in that the combustion according to the first aspect of the invention is characterized in that: φ is provided with a cylinder for combustion retardation extending downward from the lower surface of the shutter, and between the cylinder and the outer cylinder of the combustion apparatus The combustion air that passes through the combustion air passage hole in the tubular other combustion air passage that forms the combustion air passage hole flows from the air flow passage to the other combustion air passage. The lower end flows into the combustion space portion. Further, the combustion apparatus according to the third aspect of the invention is characterized in that the combustion according to the second aspect of the invention is characterized in that: one or more of the anti-return water that extends downward from the lower surface of the shutter is provided on the side of the combustion air supply delay. . In the combustion apparatus according to the first aspect of the invention, the combustion apparatus according to the first aspect of the invention is characterized in that: the shutter is configured to have a plurality of other combustion air flows in the air passage hole for combustion. hole. Further, the combustion apparatus according to the fifth aspect of the invention is the combustion apparatus according to the first to fourth aspects of the invention, characterized in that: the constituting side is formed by the through-hole flow device, and the gas is supplied to the combustion device, the tube, and the tube. Any one of the inner forms of any of the inner forms of 200821505, the fuel injector is an injector that injects liquid fuel from the fuel injection nozzle, and forms a gas fuel supply pipe around the fuel injector and the fuel injector. The tubular gas fuel flow path and the gaseous fuel are configured to flow downward from the gas fuel flow path, and are injected into the combustion space from the lower end of the gas fuel flow path to burn 〇φ. The combustion apparatus according to any one of the first to fifth aspects of the present invention, characterized in that: an orifice plate having a flow hole at a central portion is provided in the combustion space portion, and the combustion is formed by the orifice plate The combustion air flowing to the lower portion of the space portion is guided to the central portion of the combustion space portion and passes through the flow hole of the orifice plate. Further, a combustion apparatus according to a seventh aspect of the invention is characterized in that: in the combustion apparatus of the sixth aspect of the invention, a coil spring is provided on an upper side of the orifice plate, and the coil spring is configured to pass through the orifice plate The aforementioned combustion air of the holes flows to form a swirl. Further, the combustion apparatus according to any one of the sixth to seventh aspects of the present invention is characterized in that: a perforated plate having a flow hole at a central portion is provided above the ffli orifice plate In the combustion space portion, a portion of the combustion air of -8-200821505 which flows downward in the combustion space portion by the perforated plate is guided to the central portion of the combustion space portion and passes through the flow hole of the perforated plate. . Further, in the case of the two-fluid spray combustion apparatus according to any one of the first to eighth aspects of the invention, the structure of the dual-flow mist combustion apparatus may be used as follows. In other words, the apparatus according to any one of the first to eighth aspects of the present invention is a double φ spray combustion apparatus that atomizes a liquid fuel by atomizing gas to burn, and the two-fluid spray combustion apparatus is characterized. Having: a cylindrical side portion and a bottom portion provided at a lower end of the side portion, and storing 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 The stored fuel is atomized from a liquid fuel tank having a structure in which one or a plurality of individual fuel outflow holes are provided at the side or the bottom portion, and is atomized from the fuel outflow hole of the liquid fuel tank by the atomizing gas. The structure in which liquid fuel burns it. Further, the two-fluid spray combustion apparatus of the second structure is a first two-fluid spray combustion apparatus, wherein the liquid fuel outflow hole is provided in the liquid fuel tank: formed on the side of the liquid fuel tank a cylindrical atomizing gas flow path between the portion and the outer cylinder surrounding the side; and a lower portion of the outer cylinder provided with the atomizing gas introduction portion on the lower side of the nozzle body, and is positioned at The two-fluid merging space portion below the liquid fuel flow is formed in the nozzle body portion such that the body-injection combustion fluid is provided at a portion of the bottom portion of the liquid liquid than the liquid, and the outlet hole and the front -9-
200821505 述霧化用氣體導入部之中央部，且將連通 空間部的一個或複數個的噴霧孔形成在前 且將連通前述霧化用氣體流路與前述雙流 一個或複數個的溝形成在前述霧化用氣體 雙流體噴霧噴嘴， 前述液體燃料槽係設置在前述霧化用 從前述液體燃料流出孔流出並流入到 空間部的液體燃料，是構成與在前述霧化 下方之後，在前述霧化用氣體導入部流到 前述雙流體合流空間部的霧化用氣體，在 空間部合流之後，與該霧化用氣體一起從 霧。 又，第3構造之雙流體噴霧燃燒裝置 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 且在前述霧化用氣體導入部的上面亦 部， 前述液體燃料槽，係在以前述液體燃 入到前述霧化用氣體導入部之錐面部的方 ，設置在前述霧化用氣體導入部上。 又，第4構造之雙流體噴霧燃燒裝置 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 至該雙流體合流 述噴嘴本體部， 體合流空間部的 導入部之構造的 氣體導入部上， 前述雙流體合流 用氣體流路流到 前述溝被引導到 前述雙流體合流 前述噴霧孔被噴 ，係第2構造之 成尖細的錐面部 形成尖細的錐面 料槽的錐面部嵌 式抵接的狀態下 ，係第1構造之 體燃料槽的底部 -10- 200821505 具備：形成在前述液體燃料槽之側部與 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 孔之下方的雙流體合流空間部形成在中央部 至該雙流體合流空間部的一個或複數個的噴 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 y 且在前述雙流體噴霧噴嘴的上面亦形成 前述液體燃料槽，係在以前述液體燃料 入到前述雙流體噴霧噴嘴之錐面部的方式抵 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 體流路與前述雙流體合流空間部的一個或複 從前述液體燃料流出孔流出並流入到前 空間部的液體燃料，是構成與在前述霧化用 下方之後，在前述液體燃料槽之底部流到前 前述雙流體合流空間部的霧化用氣體，在前 空間部合流之後，與該霧化用氣體一起從前 霧。 又，第5構造之雙流體噴霧燃燒裝置， 構造中之任一構造的雙流體噴霧燃燒裝置， 圍繞該側部之 液體燃料流出 ，且形成連通 霧孔之構造的 尖細的錐面部 尖細的錐面部 槽的錐面部嵌 接的狀態下， 前述霧化用氣 數個的溝， 述雙流體合流 氣體流路流到 述溝被引導到 述雙流體合流 述噴霧孔被噴 係第2〜第4 其特徵爲= -11 - 200821505 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構造之雙流體噴霧燃燒裝置，係第2〜第4 構造中之任一構造的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， φ 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。 又，第7構造之雙流體噴霧燃燒裝置，係第5或第6 構造的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構造之雙流體噴霧燃燒裝置，係第2〜第7 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構造之雙流體噴霧燃燒裝置，係第1構造之 雙流體噴霧燃燒裝置，其特徵爲： -12· 200821505 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。 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 -13- 200821505 ，與該霧化用氣體一起從前述噴霧孔被噴霧。 又，第10構造之雙流體噴霧燃燒裝置，係第2〜第9 構造中任一構造的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1 1構造之雙流體噴霧燃燒裝置，係第1〜第 1 〇構造中任一構造的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。 〔發明效果〕 若藉由第1發明的燃燒裝置，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。 -14- 200821505 更由於遮板所致’使燃燒用空氣在離開燃料噴射噴嘴 的位置流入到燃燒空間部’因此一部份的燃燒用空氣被供 給到燃料的位置’能自遮板遠離下方。因而，火炎的位置 也會自遮板遠離下方’就能防止煤灰附著在遮板的下面。 附著在遮板之下面的煤灰量太多的話，雖有可能產生煤灰 所致之燃料噴射噴嘴的堵塞或煤灰吸收火炎的輻射熱導致 燃料噴射器異常加熱等的缺點，但如上所述防止煤灰附著 在遮板的下面，藉此就能防患相關缺點的產生。 若藉由第2發明的燃燒裝置，由於設置從前述遮板之 下面朝下方延伸的燃燒用空氣供給延遲用的筒，在該筒與 前述燃燒裝置外筒之間形成連通前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，是構成在前述其他燃燒用空氣流路流到下 方之後，從前述其他燃燒用空氣流路之下端，流入前述燃 燒空間部，因此能使一部份的燃燒用空氣，延遲供給到從 燃料噴射噴嘴被噴射的燃料。亦即，——部份的燃燒用空氣 被供給到燃料的位置，能自遮板遠離下方。因而，火炎的 位置也會自遮板遠離下方，就能防止煤灰附著在遮板的下 面。再者，雖然所謂該一部份的燃燒用空氣被供給到燃料 的位置，自遮板遠離下方的作用效果，即使只設置如上述 的遮板也能獲得，但如本第2發明，若設置燃燒用空氣供 給延遲用的筒，一部份的燃燒用空氣被供給到燃料的位置 ’就能更確實的自遮板遠離下方。 並且，在上述第1發明中，因燃燒裝置之大小的限制 -15- 200821505 等’遮板不能太大’燃料噴射噴嘴至燃燒用空氣流通孔的 距離不夠充分的情況下，供給到燃料的一部份之燃燒用空 氣的量過多，會有過度冷卻火炎之虞。對此如本第2發明 ’若設置燃燒用空氣供給延遲用的筒，不但能夠將一部份 的燃燒用空氣被供給到燃料的位置，自遮板遠離下方，此 時亦能減低被供給到燃料的一部份之燃燒用空氣的量，形 成適當的量。因而’亦由相關的觀點來看，設置如本第2 φ 發明的筒很有效’也能藉由設置筒來縮小遮板，達到燃燒 裝置的小型化。 若藉由第3發明的燃燒裝置，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，藉此就能利用防回水用 的筒，來防止在遮板之下面附近產生燃料的回水（對流） 。因此，能防止在遮板之下面附近回水的燃料也產生引燃 ，煤灰附著在遮板的下面。 • 若藉由第4發明的燃燒裝置，在前述遮板，係在比前 述燃燒用空氣流通孔更內側形成其他的複數個燃燒用空氣 流通孔，藉此由於一部份的燃燒用空氣，也通過該等之其 他的燃燒用空氣流通孔，因此能藉由該燃燒用空氣之流動 來抑制在遮板之下面附近產生燃燒用空氣的回流，抑制煤 灰附著在遮板的下面。並且，由於低溫的燃燒用空氣經由 前述其他的燃燒用空氣流通孔流到燃料噴射噴嘴的附近， 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 輻射熱而過熱的燃料噴射噴嘴之效果。 16- 200821505 右藉由弟5發明的燃料裝置，由於前述燃料噴射器係 從前述燃料噴射噴嘴噴射液體燃料的噴射器，在圍繞前述 燃料噴射器之周圍的氣體燃料供給管與前述燃料噴射器之 間开々成筒狀氣體燃料流路’氣體燃料，係構成在前述氣體 燃料流路流到下方，從前述氣體燃料流路之下端被噴射到 前述燃燒空間部而燃燒’藉此從筒狀之氣體燃料流路被噴 射的氣體燃料會均勻的形成在周方向，因此在燃燒性提昇 ’且例如液體燃料之供給量較少時等，發揮因氣體燃料所 致的保炎效果。 右藉由第6發明的燃燒裝置，由於其特徵爲··將中央 部開設有流通孔的節流孔板設置在前述燃燒空間部，構成 藉由前述節流孔板將在前述燃燒空間部流到下方的燃燒用 空氣，引導到前述燃燒空間部之中央部，使其通過前述節 流孔板的流通孔，因此可促進燃燒用空氣與未然氣體的混 合。其結果，由於可促進未燃氣體的燃燒，因此能使燃料 完全燃燒，也可將火炎短炎化。而且，燃燒用空氣等的流 體會暫時在節流孔板的流通孔被節流，因此流體的流量分 佈在周方向被均勻化。因此，亦可藉由燃燒排氣於周方向 均勻地加熱爐等。 若藉由第7發明的燃燒裝置，由於其特徵爲：構成在 前述節流孔板之上側設置螺旋彈簧，藉由前述螺旋彈簧使 通過前述伸節流孔之流通孔的前述燃燒用空氣之流動產生 旋流，因此，通過節流孔板之流通孔的燃燒用空氣產生廻 旋，藉此擴大至水平方向。其結果，由於在流通孔之下方 -17- 200821505 ，燃燒用空氣之流動的中心部之壓力下降’因此產生從外 側流入到前述中心部的燃燒用空氣之循環流。因而’由於 進一步促進燃燒用空氣與未燃氣體的混合，並進一步促進 未燃氣體的燃燒，因此燃料更易完全燃燒，火炎也更短炎 化。 若藉由第8發明的燃燒裝置，由於其特徵爲：在節流 孔板的上方，將中央部開設有流通孔的多孔板，設置在前 述燃燒空間部，構成藉由前述多孔板將在前述燃燒空間部 流到下方的一部份燃燒用空氣，引導到前述燃燒空間部之 中央部，使其通過前述多孔板的流通孔，因此進一步促進 燃燒用空氣與未然氣體的混合，由於進一步促進未燃氣體 的燃燒，因此燃料更易完全燃燒，火炎也進一步短炎化。 並且，若藉由第1構造的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 亦會持續性地從液體燃料槽之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 -18- 200821505 燃料槽內之液體燃料的液面會稍微上下變動，而來自 燃料流出孔之液體燃料的流出流量稍微變動的程度， 像習知有那麼大的液體燃料供給流量之變動。因此， 體燃料供給流量很低時，液體燃料也能穩定的供給， 變得很容易確立穩定燃燒，不會有引起未燃排氣之產 失火之虞。 若藉由第2構造的雙流體噴霧燃燒裝置，由於從 液體燃料流出孔流出並流入到前述雙流體合流空間部 體燃料，是構成與在前述霧化用氣體流路流到下方之 在前述霧化用氣體導入部流到前述溝被引導到前述雙 合流空間部的霧化用氣體，在前述雙流體合流空間部 之後，與該霧化用氣體一起從前述噴霧孔被噴霧，因 體燃料會與因溝而加快流速（水平方向的速度成份增 的霧化用氣體在雙流體合流空間部良好混合之後，從 體噴霧噴嘴的噴霧孔被噴射。因此，與未設置雙流體 空間部和溝的情形相比，由於液體燃料之噴霧的廣角 ，液體燃料確實的被霧化，因此該液體燃料的燃燒性 〇 若藉由第3構造的雙流體噴霧燃燒裝置，由於前 體燃料槽，係在以前述液體燃料槽之錐面部被嵌入到 霧化用氣體導入部的錐面部的方式抵接的狀態下，設 前述霧化用氣體導入部上，因此液體燃料槽與雙流體 噴嘴的中心軸很容易對合。因而，由於液體燃料糟不 靠一邊，是在周方向均勻的形成霧化用氣體流路的寬 液體 並不 當液 並且 生和 前述 的液 後， 流體 合流 此液 加） 雙流 合流 變大 提昇 述液 前述 置在 噴霧 是單 度， -19- 200821505 就能均勻的在前述周方向形成霧化用氣體流路之霧化用氣 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4構造的雙流體噴霧燃燒裝置，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 體流路之霧化用氣體的流動，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構造的雙流體噴霧燃燒裝置，由於前述霧 -20- 200821505 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 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構造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構造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構造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 -21 - 200821505 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， 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構造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構造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1 1構造的雙流體噴霧燃料裝置，由於前述 -22- 200821505 液體燃料供給管的前端部，是連接在前述液體燃料槽2價I 部的內周面，因此當來自液體燃料供給管之液體燃料的@ 出量較少時，液體燃料亦會輸送到前述內周面而流掉，@ 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。 【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 線端的橫剖面圖，第3圖是第1圖之B-B線端的橫剖面圖 。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（ Μ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)是抽出配置在前述雙流體噴霧器之雙流體噴霧 噴嘴所示的俯視圖（第5圖（a )之D箭頭方向視圖）。 -23- 200821505 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〗具有 燃燒裝置外筒4 8，在該燃燒裝置外筒4 8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14，更在氣體燃料供給路14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 1 5與燃燒空間部丨3之間，係以作爲遮板的平板1 8分隔 ’在平板1 8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、和作爲防回水用的筒之第2筒17 〇 根據第4及5圖，詳述有關雙流體噴霧器〗2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。 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19係具有：圓筒狀的側部（主 體部）20、和設置在該側部2()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21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25所供給的液體燃料24，暫 -24 - 200821505 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。 φ 液體燃料供給管25係其前端部（下端部）25A，從 液體燃料槽1 9的上端向下插入到液體燃料槽1 9內，以在 液面2 3的上方且位於中央部的方式配設在液體燃料槽19 內。液體燃料供給管25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2 0a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19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2 7內，液體燃料槽1 9的側部2 0與 噴霧器外筒2 7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28。在噴霧器外筒27係開設有 -25- 200821505 空氣流入孔29，在該空氣流入孔29係連接著霧化用空氣 供給管3 〇的前端部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 27A ’且位在液體燃料槽！ 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， φ 使液體燃料體1 9介設在液體燃料供給管25與雙流體噴霧 噴嘴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27A 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。 馨 霧化用空氣導入部3 7係形成圓環狀，在其中央部亘 有平面視之（上面視之）爲圓形狀的空間部4 1。噴嘴：φ： 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）_ 設有微細的噴霧孔44。霧化用空氣導入部3 7的空間部4 j 與噴嘴本體部39的空間部42係相連接，該些空間部41 、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’其直徑爲隨著朝向曈霧孔44 而緩緩縮小的尖細構造。在霧化用空氣導入部3 7，係在 -26- 200821505 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43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2 7B，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2 7內朝外漏洩的閉塞構件。蓋體3 1，係藉由使 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27B。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Ο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1 9的上端朝液體燃料 槽1 9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36。藉由該線圈彈簧36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）21b ，朝霧化用空氣導入部37的上面3 7a按壓。藉此，互相 接觸之底部21的外面（下面）21 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21b、37a間產生間隙。 -27- 200821505 在墊片26與液體燃料供給管2 5之間係具有間隙45 ，經由該間隙45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2 7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 28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46的壓力，亦作用於貯留在液體燃料槽i 9 內的液體燃料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2 5的前端部2 5 A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25 A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25的 前端部25A流出時，液面23會上昇，接著至液體燃料24 從液體燃料供給管25的前端部25 A流出爲止的期間，、液 面23會下降的現象，因應於該液位變動，從液體燃料^ 出孔22流出的液體燃料24之流量也會稍微變動，但該流 量變動比習知的流量變動少。 -28- 200821505 另一方面’從空氣供給泵經由霧化用空氣供給管30 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28流到下方。然後，霧化用空氣46係在 雙流體噴霧噴嘴38，流通到霧化用空氣導入部37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19之液體燃料流出孔22流出的液體燃料24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46 —同從雙流體噴霧噴嘴38的噴霧孔44， 噴射到燃燒空間部1 3 (火炎）而燃燒。再者，對已霧化 的液體燃料24的開始點火係藉由火星塞54進行。 在此，針對貯留在液體燃料槽1 9之液體燃料24的液 柱頭Η做詳述，該液柱頭Η係可由：液體燃料24流通到 液體燃料流出孔22時的壓力損失ΑΡ (孔）、從液體燃料 流出孔22流出的液體燃料24的動能Ε、以及溝40等的 霧化用空氣49的壓力損失APair，藉由下式而求得。 液柱頭H =壓力損失ΔΡ (孔）+動能E —壓力損失APair 動能E係可由：液體燃料24的流速v與液體燃料24 的密度P，藉由下式而求得。 動能=pv2/2 而且，液體燃料槽19之貯留液體燃料24的液面23 之高度，係因經由液體燃料供給管25供給到液體燃料槽 -29- 200821505 1 9的液體燃料24之流量而變化。即，調整燃料供給泵的 輸出’液體燃料24之供給流量增多時，液面23升高，液 體燃料24之供給流量減少時，液面23降低。因而，液體 燃料槽1 9之高度，係因應於配合特定之液體燃料24的供 給流量之調整範圍的液面23之高度的變化的高度。 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49例如可使用甲烷、乙烷、 丙院' 丁烷、二甲醚、氫等，進而在將雙流體噴霧燃燒裝 ® 1 1作爲重組器之熱源使用的情況下，也可以不使用燃 _斗池來發電，而使用朝雙流體噴霧燃燒裝置1 1回流的 剩餘之重組氣（參照第丨3圖）。 燃燒裝置外筒48爲圓筒狀，圍繞氣體燃料供給管47 -30- 200821505 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4 8與氣體燃料供給管4 7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 〇 ’係在燃燒用空氣流路1 5流到下方。 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18。平板18爲圓環狀的板，分隔成燃燒用空氣 流路15與燃燒空間部13。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1 8的位置升高的話，由於第1圓 筒1 6及第2圓筒1 7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51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18閉塞，但平板18的 外周側係藉由突起5 1 ’在平板1 8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 -31 - 200821505 部1 3 ’係藉由該等之燃燒用空氣流通孔5 2連通。 因而，燃燒用空氣5 0在燃燒用空氣流路15流到下方 之後，被平板1 8遮擋，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。 並且，在平板1 8的下面，係藉由焊接等的固定手段 ，固定有：朝下延伸的外側之第1圓筒1 6、和朝下延伸 的內側之第2圓筒17。第1圓筒16係位置在比燃燒用空 氣流通孔5 2更內側，配置成與燃燒裝置外筒4 8同心圓狀 。而且，燃燒裝置外筒48與第1圓筒1 6之間的圓筒狀之 空間，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流到下方並通過燃 燒用空氣流通孔5 2的燃燒用空氣5 0，係在第2燃燒用空 氣流路53進一步流到下方。而且，燃燒用空氣50，係從 燃燒用空氣流路5 3的下端流出，擴散到整個燃燒空間部 1 3。因此，從燃燒用空氣流路5 3流出的一部份燃燒用空 氣5 0 (例如整體的3 %左右），則朝向從雙流體噴霧器1 2 (雙流體噴霧噴嘴38)被噴霧的液體燃料24,在自平板 1 8遠離下方的位置被供給（混合），應用於該液體燃料 24的燃燒。此時被混合到液體燃料24的燃燒用空氣50 的量，係例如設定成空氣比之平均爲1 · 5以下。而且，從 燃燒用空氣流路53所流出之剩下的燃燒用空氣50 (例如 整體的約7%左右），進一步流到下方，會與因前述燃燒 而產生的燃燒排放氣體混合。或者，產生大量的燃燒排放 -32- 200821505 氣體。 再者，設置第1圓筒16之目的，係讓一部份的燃燒 用空氣50延遲供給到霧化液體燃料24，即在自平板1 8 遠離下方的位置，供給到霧化液體燃料24，藉此就能防 止火炎接觸到平板1 8，使煤灰附著在平板1 8。因此，第 1圓筒16的長度，即第1圓筒16的前端位置（下端位置 )，係與平板1 8之大小（雙流體噴霧噴嘴3 8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 可〇 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11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50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 -33- 200821505 1 6愈朝下延長即可。但爲了避免第1圓筒1 6與已被噴霧 的液體燃料24之干擾’第1圓筒16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16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5 2的距離縮短 ，由於第1圓筒1 6的設置位置也很靠近噴霧孔44，因此 平板18至霧化液體燃料24的外形部24A的距離亦變短 的緣故，第1圓筒16不能太長。因而，也考慮此種限制 ，只要適當決定噴霧孔44至燃燒用空氣流通孔5 2的距離 與第1圓筒16的長度（亦包含要不要第1圓筒16)即可 〇 第2圓筒17係位置在第1圓筒16的內側，與第1圓 筒16同心圓狀的被配設。再者，設置第2圓筒17之目的 ，係防止在平板1 8的附近產生霧化液體燃料24的回水（ 對流），藉此防止火炎接觸到平板1 8，使煤灰附著在平 板18。因此第2圓筒17儘量朝下延長爲佳。但爲了避免 第2圓筒17與霧化液體燃料24之干擾，第2圓筒17的 前端（下端）必須位在霧化液體燃料24之外形部24A的 外側（上側）。即，第2圓筒17的前端（下端）也只能 延長到霧化液體燃料24的外形部24A。 例如，如第1圖所記載，雙流體噴霧噴嘴3 8的噴霧 孔44至第2圓筒17的距離爲L1，與已被噴霧的液體燃 料24的外形部24A之水平線的角度爲Θ的話，雙流體噴 -34 - 200821505 霧噴嘴38(噴霧孔44)的前端（下端）至第2圓筒17的 前端（下端）之長度L2，必須滿足O<L2€Lltan0。再者 ，第2圓筒1 7的整個長度，係爲將平板1 8的下面至雙流 體噴霧噴嘴38(噴霧孔44)的前端（下端）之長度加長 到L2。再者，此種條件，連有關雙流體噴霧噴嘴3 8 (噴 霧孔44)的前端（下端）至第1圓筒16的前端（下端） 之長度和第1圓筒1 6的整個長度亦相同。雙流體噴霧噴 嘴38的噴霧孔44至第2圓筒16的距離，係例如：噴霧 孔44之孔徑（例如1 mm左右）的5 0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2 1，且具備貯留從液體燃料供給管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19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25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 35- 200821505 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第13圖所示的習 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 空間部43的液體燃料22,是構成與在霧化用空氣流路28 流到下方之後，在霧化用空氣導入部3 7流到溝40被引導 到雙流體合流空間部43的霧化用空氣，在雙流體合流空 間部43合流之後，與該霧化用空氣一同從噴霧孔44被噴 霧，因此，液體燃料24會與因溝而加快流速（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 43良好混合之後，從雙流體噴霧噴嘴38的噴霧孔44被 噴射。因此，與未設置雙流體合流空間部43和溝40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。 而且，若藉由本實施形態例1的的雙流體噴霧燃燒裝 置11，由於霧化用空氣導入部37的溝40，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爲旋流而與 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38的噴霧孔44被噴射的液體燃料24，進一步提昇該 -36- 200821505 液體燃料24的燃燒性。 並且，若藉由本實施形態例1的雙流體噴霧燃燒裝置 1 1，由於前述霧化用氣體導入部3 7的溝44，係以在前述 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。 φ 並且，若藉由本實施形態例1的雙流體噴霧燃燒裝置 1 1，由於藉由具備往下按壓液體燃料槽1 9的線圈彈簧36 ，使液體燃料槽1 9之底部2 1，形成朝雙流體噴霧噴嘴3 8 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 37a密著，藉此就能防止在該等之接觸面21b、37a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 -37- 200821505 1 4，氣體燃料49係構成在氣體燃料流路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 體燃料槽19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2 4之液面2 3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，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52 ，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5 0的一部分，會與從雙流體噴射噴嘴3 8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50,會進一步流到下方，與因前述燃燒而產生的 -38-200821505 A central portion of the atomization gas introduction portion, wherein one or a plurality of spray holes of the communication space portion are formed in front of each other, and the atomization gas flow path and the double flow one or a plurality of grooves are formed in the foregoing In the atomizing gas two-fluid spray nozzle, the liquid fuel tank is provided in the liquid fuel that flows out from the liquid fuel outflow hole and flows into the space portion, and is configured to be atomized after the atomization The atomizing gas that has flowed into the two-fluid combining space portion by the gas introduction portion merges with the atomizing gas and merges with the atomizing gas. Further, the two-fluid spray combustion apparatus of the two-component two-fluid spray combustion apparatus is characterized in that the liquid fuel tank is formed on the lower surface of the bottom portion of the liquid fuel tank and on the upper surface of the atomizing gas introduction portion. The gas is introduced into the tapered gas introduction portion of the atomization gas introduction portion, and is disposed on the atomization gas introduction portion. Further, the two-fluid spray combustion apparatus of the two-component two-fluid spray combustion apparatus is characterized in that: the liquid fuel outflow hole is formed in a structure in which the liquid reaches the nozzle body portion of the two-fluid flow, and the introduction portion of the body flow space portion In the gas introduction portion, the two-fluid gas flow path flows into the groove and is guided to the two-fluid merging, and the spray hole is sprayed, and the taper surface of the second structure is tapered to form a tapered tapered groove. In the state in which the tapered surface is in contact with each other, the bottom portion of the body fuel tank of the first structure-10-200821505 includes a cylindrical atomizing gas flow formed between the side portion of the liquid fuel tank and the surrounding outer cylinder And a plurality of sprayed two-fluid spray nozzles disposed at a lower end portion of the outer cylinder to form a two-fluid joint space portion located below the aforementioned hole to the two-fluid joint space portion; The underside of the bottom of the liquid fuel tank forms y and the liquid fuel tank is also formed on the upper surface of the two-fluid spray nozzle before the liquid fuel is introduced Two-fluid spray nozzles of the cone portion is provided in the manner against the two-fluid spray nozzle. At the bottom of the liquid fuel tank, one or a liquid fuel that flows from the liquid fuel outflow hole and flows into the front space portion is formed between the communication body flow path and the two-fluid junction space portion, and is configured to be used for the atomization. After that, the atomizing gas flowing to the front two-fluid mixing space portion at the bottom of the liquid fuel tank merges with the atomizing gas and merges with the atomizing gas. Further, in the two-fluid spray combustion apparatus of the fifth structure, the two-fluid spray combustion apparatus of any one of the configurations flows out of the liquid fuel around the side portion, and forms a tapered tapered portion which is configured to communicate the mist hole. In a state in which the tapered surface of the tapered surface groove is engaged, the plurality of grooves for the atomization gas flow, the flow of the two-fluid gas flow path to the groove are guided to the two-fluid gas flow, and the spray holes are sprayed from the second to the fourth It is characterized in that: -11 - 200821505, the two-fluid merging space portion has a circular shape in a top view, and 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. The wiring direction of the circumference of the aforementioned two-fluid confluence space portion. Further, the two-fluid spray combustion apparatus of the sixth structure is a two-fluid spray combustion apparatus of any one of the second to fourth configurations, wherein the two-fluid confluence space portion has a circular shape as viewed from above, φ 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 junction space portion as viewed from above. Further, the two-fluid spray combustion apparatus of the seventh aspect is a two-fluid spray combustion apparatus of the fifth or sixth aspect, characterized in that the groove of the atomizing gas introduction portion or the groove at the bottom of the liquid fuel tank is A plurality of them are formed in a rotationally symmetrical positional relationship in the central axis of the two-fluid confluent space portion. The two-fluid spray combustion apparatus according to the eighth aspect of the present invention, characterized in that the liquid fuel is formed by a pressing member that presses the liquid fuel tank downward; The bottom of the groove is configured to be pressed against the atomization gas introduction portion of the two-fluid spray nozzle, or a structure in which the bottom portion of the liquid fuel tank is pressed against the two-fluid spray nozzle. Further, the two-fluid spray combustion apparatus of the ninth structure is a two-fluid spray combustion apparatus of the first aspect, characterized in that: -12·200821505, the liquid fuel outflow hole is provided at a bottom portion of the liquid fuel tank; a cylindrical first atomizing gas flow path between a side portion of the liquid fuel tank and an outer cylinder surrounding the side portion; and a lower end portion provided at the lower end of the outer cylinder to be positioned below the liquid fuel outflow hole a two-fluid spray nozzle having a two-fluid junction space formed at a central portion and configured to communicate with one or a plurality of spray holes of the two-fluid merged space portion, forming a tapered surface on the surface of the two-fluid spray nozzle a taper portion, a tapered surface portion formed on a lower surface of the liquid fuel tank, and a plurality of support portions are formed on a side portion of the liquid fuel tank, and a tapered surface is formed on a lower surface of the support portion. The liquid fuel tank is provided in the two-fluid state 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. Spray nozzle. The gap secured between the tapered surface portion of the liquid fuel tank and the tapered surface portion of the two-fluid spray nozzle as the second atomizing gas flow path flows out from the liquid fuel outflow hole and flows in through the support portion. The liquid fuel in the two-fluid merging space portion is configured to flow to the second atomizing portion through the atomizing gas flowing portion between the support portions after flowing through the first atomizing gas channel. The atomizing gas guided to the two-fluid combining space portion by the gas flow path is sprayed from the spray hole together with the atomizing gas 13-200821505 after the two-fluid combining space portion is merged. Further, the two-fluid spray combustion apparatus of the tenth structure is a two-fluid spray combustion apparatus according to any one of the second to ninth configurations, wherein the two-fluid convection space portion is an inverted cone shape, and the inverted cone is The spray hole is formed at the vertex position of the space portion. Further, the two-fluid spray combustion apparatus of the first aspect is a two-fluid spray combustion apparatus of any one of the first to first 〇 structures, wherein the front end portion of the liquid fuel supply pipe is connected to the liquid The inner peripheral surface of the side portion of the fuel tank. According to the combustion apparatus of the first aspect of the invention, the combustion air flowing in the combustion air flow path is blocked by the shutter and guided to the outer peripheral side of the shutter. The fuel injection nozzle flows into the combustion space portion through the combustion air passage hole. Therefore, only a part of the combustion air in the combustion space portion is mixed with fuel injected from the fuel injection nozzle, and is applied to the fuel. The combustion, the remaining combustion air, flows further down to be mixed with the combustion exhaust gas generated by the aforementioned combustion. Therefore, by one-stage (one-stage) combustion air supply, moderate mixing of the combustion air and the fuel can be achieved, and the fire is not excessively cooled, so that a large amount of combustion exhaust gas is generated. Therefore, it is possible to generate a large amount of combustion exhaust gas in 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. -14- 200821505 Further, due to the shutter, the combustion air flows into the combustion space portion at a position away from the fuel injection nozzle. Therefore, a portion of the combustion air is supplied to the fuel position can be kept away from the shutter. Therefore, the location of the fire will also be kept away from the shutters to prevent the coal ash from adhering under the shutter. If the amount of coal ash adhering to the underside of the shutter is too large, there may be a disadvantage that the clogging of the fuel injection nozzle due to the coal ash or the radiant heat of the coal ash absorbing the flame causes abnormal heating of the fuel injector, etc., but is prevented as described above. The coal ash adheres to the underside of the shutter, thereby preventing the occurrence of related disadvantages. According to the combustion apparatus of the second aspect of the invention, the combustion air supply delay cylinder extending downward from the lower surface of the shutter is provided, and the combustion air passage hole is formed between the cylinder and the outer casing of the combustion apparatus. The other combustion air flow path of the tubular shape, the combustion air passing through the combustion air circulation hole is configured to flow from the lower end of the other combustion air flow path after the other combustion air flow path flows downward. The combustion space portion can thus supply a portion of the combustion air to the fuel injected from the fuel injection nozzle. That is, part of the combustion air is supplied to the fuel position and can be kept away from the shutter. Therefore, the location of the fire will also prevent the coal ash from adhering to the underside of the shutter from the shutter. In addition, although the combustion air of the part is supplied to the position of the fuel, the effect of the self-shielding from the lower side can be obtained even if only the shutter as described above is provided, but according to the second invention, The cylinder for the combustion air supply delay, a part of the combustion air is supplied to the position of the fuel, can be more surely self-shielded away from the bottom. Further, in the first aspect of the invention, when the distance between the fuel injection nozzle and the combustion air circulation hole is insufficient due to the limitation of the size of the combustion device -15-200821505, etc., the fuel is supplied to the fuel. Part of the amount of combustion air is too much, there will be excessive cooling and fire. According to the second invention of the present invention, if the cylinder for the combustion air supply delay is provided, not only a part of the combustion air can be supplied to the fuel, but also from the shutter, and the supply can be reduced. A portion of the fuel is burned with an amount of air to form an appropriate amount. Therefore, from the related point of view, it is also effective to provide a cylinder according to the second invention of the present invention, and it is also possible to reduce the size of the shutter by providing a cylinder to achieve miniaturization of the combustion apparatus. According to the combustion apparatus of the third aspect of the invention, the cylinder for preventing back water which extends downward from the lower surface of the shutter is provided inside the cylinder for the combustion air supply delay one by one or plural. The backwater prevention cylinder can be used to prevent backwater (convection) of fuel generated near the lower surface of the shutter. Therefore, it is possible to prevent the fuel which is returned to the water near the lower side of the shutter from igniting, and the coal ash adheres to the underside of the shutter. According to the combustion apparatus of the fourth aspect of the invention, the plurality of combustion air flow holes are formed inside the shutter than the combustion air flow holes, whereby a part of the combustion air is also used. Since the other combustion air is circulated through the holes, it is possible to suppress the recirculation of the combustion air in the vicinity of the lower surface of the shutter by the flow of the combustion air, and to prevent the coal ash from adhering to the lower surface of the shutter. Further, since the low-temperature combustion air flows to the vicinity of the fuel injection nozzle through the other combustion air flow holes, it is possible to obtain a fuel injection nozzle that can be cooled by the combustion air to be easily superheated by the radiant heat of the fire. The effect. 16-200821505 The fuel device of the invention by the fifth embodiment, wherein the fuel injector is an injector that injects liquid fuel from the fuel injection nozzle, a gas fuel supply pipe surrounding the fuel injector, and the fuel injector The gas fuel flow path 'gas fuel is configured to flow downwardly from the gas fuel flow path, and is injected from the lower end of the gas fuel flow path to the combustion space portion to be combusted. Since the gaseous fuel injected by the gas fuel flow path is uniformly formed in the circumferential direction, the flammability effect is improved when the flammability is improved and the amount of supply of the liquid fuel is small, for example. According to the combustion apparatus of the sixth aspect of the invention, the orifice plate having the flow hole in the center portion is provided in the combustion space portion, and the throttle plate is configured to flow in the combustion space portion. The combustion air to the lower side is guided to the central portion of the combustion space portion and passes through the flow hole of the orifice plate, thereby promoting the mixing of the combustion air and the urinary gas. As a result, since the combustion of the unburned gas can be promoted, the fuel can be completely burned, and the fire can be shortened. Further, the fluid such as combustion air is temporarily throttled in the flow hole of the orifice plate, so that the flow rate distribution of the fluid is uniformized in the circumferential direction. Therefore, it is also possible to uniformly heat the furnace or the like in the circumferential direction by burning the exhaust gas. According to the combustion apparatus of the seventh aspect of the present invention, the coil spring is provided on the upper side of the orifice plate, and the flow of the combustion air passing through the flow hole of the expansion orifice is caused by the coil spring. The swirling flow is generated, so that the combustion air passing through the flow holes of the orifice plate is swirled by the air, thereby expanding to the horizontal direction. As a result, the pressure at the center portion of the flow of the combustion air drops below the flow hole -17-200821505, and thus the circulating flow of the combustion air flowing from the outside to the center portion is generated. Therefore, since the mixing of the combustion air and the unburned gas is further promoted, and the combustion of the unburned gas is further promoted, the fuel is more easily burned, and the fire is also shorter and inflamed. According to the combustion apparatus of the eighth aspect of the present invention, the porous plate having the flow hole in the center portion is provided above the orifice plate, and is disposed in the combustion space portion, and the porous plate is formed in the foregoing a portion of the combustion air flowing to the lower portion of the combustion space is guided to the central portion of the combustion space portion to pass through the flow hole of the perforated plate, thereby further promoting the mixing of the combustion air and the urinary gas. The combustion of the gas is so that the fuel is more easily burned and the fire is further weakened. Further, the two-fluid spray combustion apparatus of the first structure has a cylindrical side portion and a bottom portion provided at a lower end of the side portion, and is provided with a liquid fuel supplied from the liquid fuel supply pipe, and is provided. Lower than the liquid level of the liquid fuel that has been stored, the liquid fuel that has been stored in the liquid fuel tank is configured to flow out from one or more liquid fuel outflow holes formed in the side or the bottom portion The atomizing gas atomizes the liquid fuel flowing out of the liquid fuel outflow hole of the liquid fuel tank to burn it, thereby being stored in the liquid fuel tank even when the liquid fuel is intermittently supplied from the liquid fuel supply pipe to the liquid fuel tank The liquid fuel of 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, and 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 tank of the liquid -18-200821505 is slightly up and down. The fluctuations in the flow rate of the liquid fuel from the fuel outflow hole are slightly changed, as is the case with the fluctuation of the liquid fuel supply flow rate. Therefore, when the body fuel supply flow rate is low, the liquid fuel can be stably supplied, and it becomes easy to establish stable combustion without causing a misfire of the unburned exhaust gas. In the two-fluid spray combustion apparatus of the second structure, the liquid flows out from the liquid fuel outflow hole and flows into the two-fluid junction space unit fuel, and is configured to flow downward in the atomizing gas flow path. The atomizing gas that has flowed into the groove and is guided to the double junction space portion in the gas introduction portion is sprayed from the spray hole together with the atomization gas after the two-fluid gas mixture space portion, and the body fuel is used. After the flow rate is accelerated by the groove (the atomizing gas having a higher velocity component in the horizontal direction is well mixed in the two-fluid mixing space portion, the atomizing nozzle is sprayed from the spray hole of the body spray nozzle. Therefore, the two-fluid space portion and the groove are not provided. In contrast, since the liquid fuel is actually atomized due to the wide angle of the spray of the liquid fuel, the flammability of the liquid fuel is obtained by the two-component spray-burning device of the third structure, due to the precursor fuel tank. The atomizing gas introduction unit is provided 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. Therefore, the liquid fuel tank and the center axis of the two-fluid nozzle are easily aligned. Therefore, since the liquid fuel is not on one side, the liquid liquid which is uniformly formed in the circumferential direction is a liquid liquid which is uniform and produces the aforementioned After the liquid, the fluid merges with the liquid plus) the double-flow rheology is large, and the above-mentioned spray is a single degree, and -19-200821505 can uniformly form the atomization gas of the atomization gas flow path in the circumferential direction. Flow, thus ensuring the symmetry of the spray of liquid fuel from the spray holes of the two-fluid spray nozzle (ie, the symmetry of the fire). According to the two-fluid spray combustion apparatus of the fourth structure, the liquid fuel that has flowed out from the liquid fuel outflow hole and flows into the two-fluid merging space portion is configured to flow downward in the atomizing gas flow path. The atomizing gas which is guided to the second fluid combining space portion in the bottom of the liquid fuel tank, is merged in the two-fluid combining space portion, and is sprayed from the spray hole together with the atomizing gas. This liquid fuel is well mixed with the atomizing gas which is accelerated by the above-mentioned groove (the velocity component in the horizontal direction is increased) in the two-fluid junction space portion, 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 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 structure, the groove of the gas introduction portion of the mist-20-200821505 or the groove at the bottom of the liquid fuel tank is formed as viewed from above, and is formed along the two-fluid flow. Since the wiring direction of the circumference of the space portion is such that the atomizing gas becomes a swirling flow and is mixed with the liquid fuel in the two-fluid combining space portion, the liquid fuel and the atomizing 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 sixth structure, 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, the groove of the atomizing 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. In the two-fluid spray combustion apparatus of the eighth structure, 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. Pressing and adhering, or making the bottom of the liquid fuel tank to be pressed against the two-fluid spray nozzle, the lower portion of the bottom of the fuel tank 21 - 200821505 and the atomizing gas introduction portion The top surface of the fuel tank is adhered to the tapered surface of the atomization 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 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. The two-fluid spray fuel device of the ninth structure, that is, the liquid fuel that flows out from the liquid fuel outflow hole and flows 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 structure, since the two-fluid merging space portion has an inverted cone 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 first aspect, since the front end portion of the liquid fuel supply pipe of the above-mentioned -22-200821505 is connected to the inner peripheral surface of the liquid fuel tank 2, the liquid fuel supply is supplied from the liquid fuel supply. When the amount of liquid fuel in the tube is small, the liquid fuel is also sent to the inner peripheral surface and flows out, which allows the liquid fuel from the liquid fuel outflow hole to flow more stably. /that is, if the liquid fuel falls into a granular form and is considered to be stored in the liquid, the liquid level of the liquid fuel in the fuel tank is greatly changed, and when the liquid level is very low, the liquid is temporarily exposed. The outflow hole of the fuel and the outflow of the liquid fuel are interrupted, but if the liquid fuel is supplied to the inner peripheral surface of the liquid fuel tank, the related disadvantages can be prevented. [Embodiment] [Best Mode for Carrying Out the Invention] Hereinafter, an embodiment of the present invention will be described in detail based on 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. The figure is a cross-sectional view of the end of line BB 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 (Μ is the CC line end of Fig. 4(a) 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 plan view showing the two-fluid spray nozzle disposed in the two-fluid atomizer. (Fig. 5 (a), arrow D direction view) -23- 200821505 A brief description of the two-fluid spray combustion apparatus 1 of the first embodiment will be described based on the first, second and third drawings, and the two-fluid spray combustion The apparatus 1 has a burner outer cylinder 4, and a double fluid atomizer 12 is disposed in the upper center portion of the burner unit, and the lower side of the two-fluid atomizer 12 is a combustion space unit 13. A gas fuel supply path 14 is formed around the two-fluid atomizer 12, and a combustion air supply path 15 is formed around the gas fuel supply path 14. The combustion air supply path 15 and the combustion space unit Between 3, separated by a flat plate as a shutter On the lower surface of the flat plate 18, a first cylinder 16 serving as a cylinder for delaying supply of combustion air and a second cylinder 17 serving as a cylinder for preventing back water are provided in accordance with Figs. 4 and 5 The structure of the two-fluid atomizer is further described. The two-fluid atomizer 12 is a two-fluid for injecting liquid fuel and atomizing gas (atomizing air), that is, atomizing and spraying with the aforementioned atomizing gas. The liquid fuel. As shown in Figures 4 and 5, a liquid fuel tank 19 is provided in the two-fluid atomizer 12. The liquid fuel tank 19 has a cylindrical side portion (body portion) 20 and is disposed at The structure of the bottom portion 2 1 at the lower end of the side portion 2 (). Then, the liquid fuel 24 for burning the combustion device is stored in the interior of the liquid fuel tank 19 at the center of the bottom portion 21 of the liquid fuel tank 19. A fine liquid fuel outflow port 22 is opened. The liquid fuel outflow port 22 is positioned below the liquid level 23 of the liquid fuel 24 stored in the liquid fuel tank 19. That is, 'supply from the liquid fuel supply pipe 25. Liquid fuel 24, temporarily stored in liquid fuel tank 1 -24 - 200821505 9, the stored liquid fuel 24 flows out from the lower liquid fuel outflow port 22 to the outside of the liquid fuel tank 19. At this time, the height of the liquid surface 23 of the liquid fuel 24 stored in the liquid fuel tank 19 is self-contained. The height of the inner surface 21a of the bottom portion 21 to the liquid surface 23 is the height of the liquid column head (described later in detail) corresponding to the pressure loss portion when the liquid fuel 24 flows into the liquid fuel outflow hole 22. For the liquid fuel 24, for example, kerosene, heavy oil, alcohol, diethyl ether, etc. can be used. φ 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 fuel tank 19. The liquid fuel tank 19 is disposed above the liquid surface 23 and at the center portion. 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, in the case where 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 is formed into a granular form as shown in the figure. 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 concentrically arranged with the sprayer outer cylinder 27 in the cylindrical sprayer outer cylinder 27, and the cylindrical portion between the side portion 20 of the liquid fuel tank 19 and the sprayer outer cylinder 27 The space portion is an atomizing air flow path 28 as a gas flow path for atomization. The sprayer outer cylinder 27 is provided with a -25-200821505 air inflow hole 29, and the air inflow hole 29 is connected to the front end portion 30A of the atomizing air supply pipe 3''. 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 is located at Liquid fuel tank! The lower side of 9. In other words, the two-fluid atomizer 12 is a buffer portion for mitigating fluctuations in the liquid fuel supply flow rate, and φ is disposed between the liquid fuel supply pipe 25 and the two-fluid spray nozzle 38. 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 fixing means such as welding. The lower end portion 27A of the sprayer outer cylinder 27. The air atomizing air introducing portion 37 is formed in an annular shape, and a central portion thereof has a circular space portion 41 in a plan view (top view). Nozzle: φ: The body portion 39 is formed with an inverted conical space portion (recessed portion) 42' at the center portion thereof and is provided at the center (the apex position of the inverted conical space portion 42) _ with a fine spray hole 44 . The space portion 4 j of the atomizing air introduction portion 37 is connected to the space portion 42 of the nozzle body portion 39, and the space portions 41 and 42 constitute the two-fluid junction space portion 43. In other words, the two-fluid merging space portion 43 has a round shape as viewed from above, and its diameter is a tapered structure that gradually decreases toward the mist hole 44. A groove (crack) 40 is formed in two places in the circumferential direction of the atomizing air introducing portion 37 in -26-200821505. The grooves 40 are of a slewing type, and the wiring direction along the circumference of the two-fluid merging space portion 43 is formed on the upper side, and the center axis of the two-fluid merging space portion 43 (in the illustrated example, the spray hole) The central axis of 44 is a positional relationship in which the circumference is rotationally symmetrical (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 screw portion 32 formed on the inner peripheral surface of the upper end portion 27B of the sprayer outer tube 27 by the screw portion 3 3 formed on the outer peripheral surface of the lower portion 3 1 A thereof, and is attached to The upper end portion 27B 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 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 19. A coil spring 36, which is a pressing member, is interposed between the spacer 35 provided on the lower surface side of the lid member 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) 21b 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) to prevent generation between the contact surfaces 21b, 37a. gap. -27- 200821505 There is a gap 45 between the gasket 26 and the liquid fuel supply pipe 25, through which the internal space of the liquid fuel tank 19 and the sprayer outer cylinder 27 on the outer side of the liquid fuel tank 1 9 are The internal space forms a connection. That is, the upper end of the liquid fuel tank 19 is opened with respect to the internal space of the atomizer outer cylinder 27. The internal space of the liquid fuel tank 19 communicates with the upper end portion (upflow portion) of the atomizing air flow path 28. Therefore, the pressure of the atomizing air 46 which flows from the air inflow hole 29 into the atomizer outer cylinder 27 and flows into the atomizing air flow path 28 also acts on the liquid fuel stored in the liquid fuel tank i9. The liquid level 23 of 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 2 5 A of the liquid fuel supply pipe 25 (higher In the case of the flow rate, it will continuously flow out, and in the case of a low flow rate, as shown in the example of Fig. 5(a), it will intermittently flow out, and 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. 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 25A of the liquid fuel supply pipe 25, the liquid surface 23 rises, and then While the liquid fuel 24 has flowed out from the front end portion 25A of the liquid fuel supply pipe 25, the liquid surface 23 is lowered, and the flow rate of the liquid fuel 24 flowing out of the liquid fuel supply port 22 is also affected by the fluctuation of the liquid level. It will change slightly, but this flow change is less than the known flow changes. -28- 200821505 On the other hand, 'the atomizing air 46 sent from the air supply pump via the atomizing air supply pipe 30 flows into the sprayer outer cylinder 27 from the air inflow hole 29, and in the liquid fuel tank 19 and the atomizer The atomization air flow path 28 between the outer cylinders 27 flows downward. 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 3 ' in a state where the flow velocity is increased. The two-fluid combining space portion 43 forms a swirling flow, which is merged (mixed) with the liquid fuel 24 flowing out of the liquid fuel outflow hole 22 of the liquid fuel tank 19. 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 sprayed with the atomizing air 46 from the two-fluid spray nozzle 38. The hole 44 is injected into the combustion space portion 13 (flame) to be burned. Further, the initiation of ignition of the atomized liquid fuel 24 is performed by the spark plug 54. Here, the liquid column head enthalpy of the liquid fuel 24 stored in the liquid fuel tank 19 can be described in detail. The liquid column head can be caused by the pressure loss 孔 (hole) when the liquid fuel 24 flows to the liquid fuel outflow hole 22, The kinetic energy 液体 of the liquid fuel 24 from which the liquid fuel outflow hole 22 flows, and the pressure loss APair 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 APair 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 24. Kinetic energy = pv2/2 Further, the height of the liquid surface 23 of the liquid fuel tank 19 in which the liquid fuel 24 is stored is varied by the flow rate of the liquid fuel 24 supplied to the liquid fuel tank -29-200821505 119 via the liquid fuel supply pipe 25. . That is, when the supply flow rate of the liquid fuel supply 24 is increased, the liquid level 23 is increased, and when the supply flow rate of the liquid fuel 24 is decreased, the liquid level 23 is lowered. Therefore, the height of the liquid fuel tank 19 is a height corresponding to the change in the height of the liquid surface 23 in accordance with the adjustment range of the supply flow rate of the specific liquid fuel 24. Further, although the liquid fuel 24 is sprayed into a conical shape from the spray hole 44 as exemplified in Fig. 5(a), the extent (spray angle) of the spray at this time is due to the sectional area of the groove 40 (i.e., the flow to the groove). The flow rate of the atomizing air 46 at 40 o'clock, the size of the spray hole 44 (i.e., the pore diameter), 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 gaseous 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 the gas fuel 49 for combustion of the combustion device, for example, methane, ethane, propylene tert-butane, dimethyl ether, hydrogen, or the like can be used, and in the case where the two-fluid spray combustion device 1 1 is used as a heat source of the recombiner, It is also possible to use the fuel-free pool to generate electricity, and to use the remaining reformed gas that is refluxed toward the two-fluid spray combustion device 1 (refer to Fig. 3). The burner outer cylinder 48 is cylindrical and surrounds the periphery of the gaseous fuel supply pipe 47-30-200821505. The combustion device outer cylinder 48 and the gas fuel supply pipe 47 are concentrically arranged, 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 1 5. Therefore, the combustion air 5 〇 ' supplied from the air supply blower of the combustion air supply system flows downward in the combustion air flow path 15 . 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, if the position of the flat plate 18 is raised, since the first cylinder 16 and the second cylinder 17 must be longer than the illustrated example, the flat plate 18 is the same as the two-fluid spray nozzle 38 as shown in the example. Height, but 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 means of fixing means such as welding, and on the other hand, a plurality of outer peripheral surfaces of the flat plate 18 are formed (four in the illustrated example) The projections 51 and the front end faces of the projections 51 are fixed to the inner circumferential surface of the outer casing 48 of the combustion apparatus by fixing means such as welding. Therefore, the gas fuel supply pipe 47 to the vicinity of the outer tube 48 of the combustion device is closed by the flat plate 18, but the outer peripheral side of the flat plate 18 is formed by the projection 5 1 ' on the outer peripheral surface of the flat plate 18 and the outer tube 48 of the combustion device. A gap is formed between the inner circumferential surfaces 48a, and the gaps are the combustion air circulation holes 52. That is, the combustion air flow path 15 and the combustion space -31 - 200821505 portion 1 3 ' communicate with each other through the combustion air flow holes 52. Therefore, the combustion air 50 flows downward in the combustion air flow path 15, and is blocked by the flat plate 18, and guided to the outer peripheral side of the flat plate 18, thereby being separated from the two-fluid spray nozzle 38 (spray hole 44). The combustion air circulation hole 52 flows into the combustion space portion 13. Further, on the lower surface of the flat plate 18, a first cylinder 16 that extends outward and a second cylinder 17 that extends downward are fixed by fixing means such as welding. The first cylinder 16 is disposed inside the combustion air passage hole 5 2 and is disposed concentrically with the combustion device outer cylinder 48. Further, the cylindrical space between the outer tube 48 of the combustion device and the first cylinder 16 is the second combustion air flow path 53. Therefore, the combustion air 50 that has flowed down through the first combustion air passage 15 and passes through the combustion air passage hole 5 2 flows further downward in the second combustion air flow passage 53. Further, the combustion air 50 flows out from the lower end of the combustion air flow path 53 and is diffused to the entire combustion space portion 13. Therefore, a part of the combustion air 50 flowing from 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 atomizer 1 2 (two-fluid spray nozzle 38). It is supplied (mixed) at a position away from the lower side of the flat plate 18, and is applied to the combustion of the liquid fuel 24. The amount of the combustion air 50 to be mixed into the liquid fuel 24 at this time is, for example, set to an air ratio of an average of 1.5 or less. Further, the remaining combustion air 50 (e.g., about 7% of the total amount) flowing out of the combustion air passage 53 further flows downward, and is mixed with the combustion exhaust gas generated by the combustion. Or, generate a large amount of combustion emissions -32- 200821505 gas. Further, the purpose of providing the first cylinder 16 is to delay supply of a portion of the combustion air 50 to the atomized liquid fuel 24, that is, to the atomized liquid fuel 24 from a position away from the flat plate 18, Thereby, it is possible to prevent the fire from coming into contact with the flat plate 18, so that the coal ash adheres to the flat plate 18. Therefore, the length of the first cylinder 16, that is, the front end position (lower end position) of the first cylinder 16 is the size of the flat plate 18 (the spray hole 44 of the two-fluid spray nozzle 38 to the combustion air circulation hole 52). The relationship between the distances and the distances may be appropriately set. Alternatively, the first cylinder 16 may be omitted, and only the combustion air circulation holes 52 in the outer peripheral portions of the flat plate 18 and the flat plate 18 may be provided, and the combustion air flow holes 5 1 are self-contained. Since the spray holes 44 are separated, a part of the combustion air 50 passing through the combustion air circulation hole 51 is supplied to the atomized liquid fuel 24 at a position away from the lower side of 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 passage hole, the larger the diameter of the two-fluid spray combustion device 11. 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 it is very effective to provide the first cylinder 16 as shown in the example. In this case, the shorter the distance from the spray hole 44 to the combustion air circulation hole 52, the longer the first cylinder -33-200821505 1 6 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 flow hole 52 is shortened, and since the installation position of the first cylinder 16 is also very close to the spray hole 44, the distance from the flat plate 18 to the outer shape portion 24A of the atomized liquid fuel 24 is obtained. Also shortened, the first cylinder 16 cannot be too long. Therefore, such a restriction is also considered, and the second cylinder can be appropriately determined by appropriately determining the distance between the spray hole 44 and the combustion air circulation hole 52 and the length of the first cylinder 16 (including the first cylinder 16 as well). The 17-series position is disposed inside the first cylinder 16 and is concentric with the first cylinder 16 . Further, the purpose of providing the second cylinder 17 is to prevent backwater (convection) of the atomized liquid fuel 24 from being generated in the vicinity of the flat plate 18, thereby preventing the fire from coming into contact with the flat plate 18, and attaching the coal ash to the flat plate 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 second cylinder 17 and the atomized liquid fuel 24, the front end (lower end) of the second cylinder 17 must be positioned outside (upper side) of the outer portion 24A of the atomized liquid fuel 24. That is, the front end (lower end) of the second cylinder 17 can only be extended to the outer shape portion 24A of the atomized liquid fuel 24. For example, as shown in Fig. 1, when the distance from the spray hole 44 of the two-fluid spray nozzle 38 to the second cylinder 17 is L1, and the angle of the horizontal line of the outer shape portion 24A of the liquid fuel 24 that has been sprayed is Θ, Two-fluid spray-34 - 200821505 The length L2 of the front end (lower end) of the mist nozzle 38 (spray hole 44) to the front end (lower end) of the second cylinder 17 must satisfy O <L2€Lltan0. Further, the entire length of the second cylinder 17 is such that the length from the lower surface of the flat plate 18 to the front end (lower end) of the double-fluid spray nozzle 38 (spray hole 44) is lengthened to L2. Further, such a condition is the same as the length of the front end (lower end) of the two-fluid spray nozzle 38 (spray hole 44) to the front end (lower end) of the first cylinder 16 and the entire length of the first cylinder 16 . The distance from the spray hole 44 of the two-fluid spray 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). As described above, the two-fluid spray combustion apparatus 1 1 of the first embodiment has a cylindrical side portion 20 and a bottom portion 2 1 provided at the lower end of the side portion 20, and is provided with the storage from the liquid fuel supply tube 25. The liquid fuel 24 to be supplied is 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 outlet hole 22 opened at the bottom portion 21 The fuel tank 19 is configured to atomize and burn the liquid fuel 24 flowing out of the liquid fuel outflow hole 22 of the liquid fuel tank 19 by the atomizing air 46, whereby the liquid fuel 24 is intermittently supplied from the liquid fuel. When the tube 24 is supplied 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, when the supply flow rate of the pump of the liquid fuel supply system is lowered, and the liquid 24 is intermittently supplied from the liquid fuel supply pipe 25 to the liquid fuel tank 19, the liquid level 23 of the liquid fuel 24 stored in the liquid fuel tank 19 is slightly Up and down, the flow rate of the liquid fuel 24 from the liquid fuel gas outlet hole 22 of the liquid 35-200821505 is slightly changed, and the fluctuation of the liquid fuel supply flow rate is not as large as the conventional one shown in Fig. 13. Therefore, when the liquid fuel supply flow rate is low, stable supply of the liquid fuel 24 can be formed, and it becomes easy to establish stable combustion without causing generation of unburned exhaust gas and misfire. In the two-fluid spray combustion apparatus 1 of the first embodiment, the liquid fuel 22 that flows out of the liquid fuel outflow hole 22 and flows into the two-fluid joint space portion 43 is configured as a flow path for the atomizing air. After flowing to the lower side, the atomizing air introduced into the groove 40 by the atomizing air introducing unit 37 reaches the two-fluid combining space portion 43 and merges with the atomizing air. The spray hole 44 is sprayed together, so that the liquid fuel 24 is well mixed with the atomizing air 46 which is accelerated by the groove (the speed component in the horizontal direction) is well mixed in the two-fluid combining air portion 43, from the two-fluid spray nozzle. The spray hole 44 of 38 is sprayed. Therefore, compared with the case where the two-fluid combining space portion 43 and the groove 40 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, in the two-fluid spray combustion apparatus 11 of the first embodiment, the groove 40 of the atomizing air introduction portion 37 is formed on the upper side, and the wiring direction along the circumference of the two-fluid joint space portion 43 is formed. Thereby, in the two-fluid merging space portion 43, the atomizing air 46 is swirled and 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, further improving the flammability of the liquid fuel 24 of the -36-200821505. Further, in the two-fluid spray combustion apparatus 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 two-fluid merging space portion 43. Since a plurality of positions are formed in a manner, the amount of distribution in the circumferential direction of the liquid fuel 24 sprayed from the spray holes 44 of the two-fluid spray nozzle 38 becomes uniform, and the combustibility of the liquid fuel 24 can be improved. φ Further, by the two-fluid spray combustion apparatus 1 1 of the first embodiment, the coil spring 36 that presses the liquid fuel tank 19 downward is used to form the bottom portion 2 of the liquid fuel tank 19 toward the double Since the atomization air introduction unit 37 of the fluid spray nozzle 38 is pressed and adhered to each other, the lower surface 21b of the bottom portion 21 of the fuel tank 19 is adhered to the upper surface 37a of the atomizing air introduction portion 37, thereby preventing it. A gap is formed between the contact faces 21b, 37a. 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, in the two-fluid spray fuel device 1 of the first embodiment, since the two-fluid joint space portion 43 has an inverted conical 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 can be performed more surely. 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. Further, the two-fluid spray fuel device 11 of the first embodiment has a cylindrical gas fuel flow path formed between the sprayer outer cylinder 27 and the gas fuel supply pipe 47 surrounding the sprayer outer cylinder 27 - 37-200821505 1 4, the gaseous fuel 49 is configured to flow in 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 burned, whereby the cylindrical gas fuel flow path 14 is Since the injected gaseous 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 anti-inflammatory effect due to the gaseous fuel 49 is exerted. Further, in the two-fluid spray fuel device 11 of the first embodiment, when 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 fuel tank 19, When the outflow amount of the liquid fuel 24 of 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 more stably discharged. That is, if the liquid fuel 24 is granulated and falls, and the liquid level 2 3 of the liquid fuel 24 stored in the liquid fuel tank 19 is greatly changed, and the liquid level is extremely low, 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 path 15 flows to the lower combustion air 50, and is shielded by the flat plate 18 to be guided to the flat plate 18. The outer peripheral side is further separated from the two-fluid spray nozzle 38, and flows into the combustion space portion 13 through the combustion air passage hole 52. Therefore, only a part of the combustion air 50 in the combustion space portion 13 is combined with the slave fluid. The injection nozzle 38 is mixed with the sprayed liquid fuel 24, and is applied to the combustion of the liquid fuel 24, and the remaining combustion air 50 is further flowed downward, and -38- due to the aforementioned combustion.
200821505 燃燒排氣混合。因此，藉由一次（一段）之燃燒 給，就能達成燃燒用空氣5 0與液體燃料24的適 就不會過度冷卻火炎，使其產生大量的燃燒排氣 以簡易的構造產生大量的燃燒排氣，且可實現亦 起未燃氣體之產生和失火之虞的雙流體噴霧燃燒 並且由於平板1 8所致，使燃燒用空氣5 0在 體噴霧噴嘴3 8的位置流入到燃燒空間部1 3，因 的燃燒用空氣5 0被供給到燃料的位置，能自平| 下方。因而，火炎的位置也會自平板18遠離下 防止煤灰附著在平板1 8的下面。附著在平板1 8 煤灰量太多的話，雖有可能產生因煤灰所致之雙 噴嘴38的堵塞或煤灰吸收火炎的輻射熱導致雙 器〗2異常加熱等的缺點，但如上所述防止煤灰 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 1 1，由於設置從平板1 8之下面朝下方延伸的燃 供給延遲用的第1圓筒1 6，並在該第1圓筒1 6 置外筒48之間形成連通至燃燒用空氣流通孔52 之燃燒用空氣流路5 3，通過燃燒用空氣流通孔 用空氣5 0，是構成在燃燒用空氣流路5 3流到下 從燃燒用空氣流路5 3之下端’流入燃燒空間部 能使一部份的燃燒用空氣5 0，延遲供給到從雙 噴嘴38被噴霧的液體燃料24。亦即，一部份的 氣50被供給到液體燃料24的位置，能自平板 用空氣供 度混合， 。即，能 不會有引 裝置。 離開雙流 此一部份 反18遠離 方，就能 之下面的 流體噴霧 流體噴霧 附著在平 i燃燒裝置 :燒用空氣 與燃燒裝 的圓筒狀 5 2的燃燒 '方之後， 13，因此 流體噴霧 丨燃燒用空 18遠離下 -39-200821505 Burning exhaust mixing. Therefore, by one-stage (one-stage) combustion, it is possible to achieve the combustion air 50 and the liquid fuel 24 without excessively cooling the fire, causing a large amount of combustion exhaust gas to generate a large number of combustion rows with a simple structure. Gas, and can realize the two-fluid spray combustion which also generates the unburned gas and the fire, and the combustion air 50 flows into the combustion space portion 13 at the position of the body spray nozzle 38 due to the flat plate 18. Because the combustion air 50 is supplied to the fuel position, it can be self-leveling|lower. Thus, the location of the fire is also removed from the plate 18 to prevent the coal ash from adhering under the plate 18. If the amount of coal ash adhering to the flat plate 18 is too large, there may be a disadvantage that the clogging of the double nozzle 38 due to the coal ash or the radiant heat of the coal ash absorbing the flame causes abnormal heating of the double device, but the above prevention is prevented. Below the coal ash board 18, it is possible to prevent the occurrence of related disadvantages. Further, according to the two-fluid spray 1 1 of the first embodiment, the first cylinder 16 for fuel supply delay extending downward from the lower surface of the flat plate 18 is provided, and the first cylinder 16 is placed The combustion air flow path 53 that communicates with the combustion air passage hole 52 is formed between the outer cylinders 48, and the air for combustion air passage hole 50 is formed to flow from the combustion air flow passage 53 to the lower combustion chamber. The lower end of the air flow path 5 3 flows into the combustion space portion to delay supply of a portion of the combustion air 50 to the liquid fuel 24 sprayed from the double nozzle 38. That is, a portion of the gas 50 is supplied to the position of the liquid fuel 24, which can be mixed with the air supply from the flat plate. That is, there can be no lead device. Leaving the double flow, this part of the reverse 18 is far away from the square, and the fluid spray fluid spray below it can be attached to the flat i combustion device: after burning the air and burning the cylindrical shape of the combustion, 13, therefore, the fluid spray丨 Burning air 18 away from the next -39-
200821505 方。因而，火炎的位置也會自平板18遠離下方， 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50被 液體燃料24的位置，自平板1 8遠離下方的作用效 使只設置如上述的平板1 8也能獲得，但如本實施 1，若設置燃燒用空氣供給延遲用的第1圓筒16, 的燃燒用空氣50被供給到液體燃料24的位置，就 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 平板18不能太大，雙流體噴霧噴嘴38至燃燒用空 孔52的距離不夠充分的情況下，供給到液體燃料 部份之燃燒用空氣5 0的量過多，會有過度冷卻火 。對此如本實施形態例1，若設置燃燒用空氣供給 的第1圓筒1 6，不但能將一部份的燃燒用空氣5 0 液體燃料24的位置，自平板1 8遠離下方，此時/方 供給到液體燃料24的一部份之燃燒用空氣5 0的量 適當的量。因而，亦由相關的觀點來看，設置如本 態例1的第1圓筒16很有效，也能藉由設置第1 來縮小平板1 8，達到雙流體噴霧燃燒裝置1 1的小 並且，若藉由本實施形態例1的雙流體噴霧燃 1 1，將從平板1 8之下面朝下方延伸的防回水用之 筒1 7，設置在燃燒用空氣供給延遲用之第1圓筒 側，藉此就能藉由防回水用的第2圓筒1 7，來K 板1 8之下面附近產生液體燃料24的回水（對流） 就能防 供給到 果，即 形態例 一部份 能更確 制等， 氣流通 24的一 炎之虞 ‘延遲用 供給到 :能減低 :，形成 =實施形 圓筒16 型化。 $燒裝置 第2圓 1 6的內 ί止在平 。因此 -40 - 200821505 ，能防止在平板1 8之下面附近回水的液體燃料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50就能在燃燒空間部 1 3良好混合，因此燃燒性提升。 <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墳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 12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4 3 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43，在該雙流體合流空間 -41 _ 200821505 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46 —同從雙流體唷 霧噴嘴3 8的噴霧孔44，噴射到燃燒空間部1 3。 再者，第6圖的雙流體噴霧器1 2的其他部分的構造 ，係與上述實施形態例1 (第4圖）的雙流體噴霧器i 2 相同。並且，連有關本實施形態例2之雙流體噴霧燃燒裝 置11之雙流體噴霧器以外的部分之構造，均爲與上述實 施形態例1 (第1圖〜第3圖）的雙流體噴霧燃燒裝置i i 相同。 若藉由本實施形態例2的雙流體噴霧燃燒裝置η， 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2的的雙流體噴霧燃燒裝置 1 1，由於霧化用空氣導入部3 7的溝6 1，是在上面視之， 形成沿著雙流體合流空間部4 3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4 3之中心軸周呈旋轉對稱之位置關係的 -42- 200821505 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 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12 ，係液體燃料槽1 9之底部2 1的內面（上面）2 1 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2 1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21 b-2爲圓形狀的 水平面。 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 2 1 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3 7b (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1 9，藉此液體燃 -43- 200821505 料槽〗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2 1 b-1、3 7b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43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37的溝並不限於廻旋型，也可爲與 第6圖相同的衝突型。 再者，第7圖的雙流體噴霧器12的其他部分的構造 ’係與上述實施形態例1 (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1 1之雙流體噴霧器以外的部分之構造，均爲與上述實 施形態例1 (第1圖〜第3圖）的雙流體噴霧燃燒裝置1 1 相同。 -44- 200821505 若藉由本實施形態例3的雙流體噴霧燃燒裝置1 i， 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 1 1，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37的錐面部（內周面3 7b)的方式抵接的 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 於液體燃料糟19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）。 並且，在本實施形態例3的雙流體噴霧燃燒裝置11 ，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21b-l)與霧化用空氣導入部37的 錐面部（內周面37b)形成密著，藉此就能防止在該等之 接觸面2 1 b-1、3 7b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。 -45- 200821505 <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 φ 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，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。 • 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。因此，液體燃料槽19，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3 8a (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 簧3 6 (參照第4圖）往下按壓液體燃料槽1 9，藉此液體 -46- 200821505 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21b-1、38b間產生間隙 〇 並且，藉由錐形構造的內面3 8a形成在雙流體噴霧噴 嘴3 8之中央部的倒圓錐狀之空間部，爲雙流體合流空間 部43。微細的噴霧孔44，係形成該雙流體合流空間部43 的中心（倒圓錐狀之空間部43的頂點位置），連通至雙 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4 4而 緩緩縮小的尖細構造。 而且，在液體燃料槽1 9之底部21的下面21 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2 8流到下方的霧化用空氣 46，係在液體燃料槽1 9之底部2 1，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46 —同從雙流體噴霧噴嘴3 8的噴霧孔44，噴射到燃 -47- 200821505 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 ，係與上述實施形態例1 (第4圖）的雙流體噴霧器 相同。並且，連有關本實施形態例4之雙流體噴霧燃燒 置11之雙流體噴霧器以外的部分之構造’均爲與上述 施形態例1 (第1圖〜第3圖）的雙流體噴霧燃燒裝置 相同。 若藉由本實施形態例3的雙流體噴霧燃燒裝置η 可得到如下的作用效果，並且，其他也能得到與上述實 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 1 1，由於從液體燃料流出孔44流出並流入到雙流體合 空間部43的液體燃料24，是構成與在霧化用空氣流路 流到下方之後，在液體燃料槽1 9之底面2 1流到溝7 1 引導到雙流體合流空間部43的霧化用空氣46，在雙流 空間部43合流之後，與該霧化用空氣46 —同從噴霧 44被噴霧的構造，藉此，液體燃料24與因溝71加快 速（水平方向的速度成份增加）的霧化用空氣46在雙 體合流空氣部43良好的被混合，從噴霧孔44被噴霧。 此，與未設置雙流體合流空間部43和溝7 1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 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19,係在以液體燃料槽19 錐面部（底部21之下面21b的外側部分21b-l)嵌入 造 12 裝 實 11 施 置 流 28 被 體 孔 流 流 因 ， 的 之 到 -48- 200821505 雙流體噴霧噴嘴3 8的錐面部（內面3 8 a )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19與雙流體噴霧噴嘴38的中心軸很容易對合。因而， 由方< 液體燃料糟19不是單靠一邊，是在周方向均句的形 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）。 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’由於液體燃料槽丨9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2 4的燃燒性。 並且，在本實施形態例4的雙流體噴霧燃燒裝置11 ，藉由線圈彈簧3 6 (參照第4圖）往下按壓液體燃料槽 1 9，藉此將液體燃料槽丨9的底部21朝雙流體噴霧噴嘴 3 8按壓，使燃料槽19之底部21的錐面部（外側部分 -49- 200821505 2 1 b-1 )與雙流體噴霧噴嘴3 8的錐面部（內面 密著，藉此就能防止在該等之接觸面2 1 b-1、 間隙。因此，能防止霧化用空氣46流到溝71 ，充分發揮因溝7 1所致的廣大區域之噴霧效弄 <實施形態例5> 第9圖（a)是表示有關本發明之實施形f 流體噴霧燃燒裝置的雙流體噴霧器之下側部分 剖面圖，（第9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 的仰視圖（第9圖（a )之L箭頭方向視圖）， )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ί: ，係液體燃料槽19之底部21的內面（上面） (倒圓錐狀）的錐面，在中心（倒圓錐狀之錐 置）形成有微細的液體燃料流出孔22。而且 槽19之底面21的外面（下面）21 b，係外側 爲尖細（倒圓錐狀）的錐面，內側部分21b-2 水平面。 另一方面，雙流體噴霧噴嘴38並不具有 導入部（參照第7圖），與噴霧器外筒27 — 霧化器外筒27的下端（亦可以焊接等來固定 )。雙流體噴霧噴嘴38，係內面（上面）38a 圓錐狀）的錐面。因此，液體燃料槽19，係 38a)形成 38a間形成 以外的部分 i例5之雙 之構造的縱 )，第9圖 燃料槽所示 ’弟9圖（c 商體噴霧12 2 1 a爲尖細 面的頂點位 ，液體燃料 丨部分2 1 b -1 爲Η形狀的 霧化用空氣 體形成在噴 另外一體者 爲尖細（倒 在以其底部 -50- 200821505 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3 8的內面3 8 a (錐面部） 按壓而密著，防止在該等之接觸面21b-1、38b間產生間 隙。 並且，藉由錐形構造的內面38a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 43。微細的噴霧孔44 ’係形成該雙流體合流空間部43的 中心（倒圓錐狀之空間部43的頂點位置），連通至雙流 體合流空間部4 3。即，雙流體合流空間部4 3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。 而且’在液體燃料槽1 9之底部21的下面21 b側，係 在其周方向的四處形成有溝（裂縫）81。該等之溝81係 爲衝突型’形成在上面視之，沿著雙流體合流空間部4 3 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’在韓化用空氣流路2 8流到下方的霧化用空氣 4 6 ’係在液體燃料槽19之底部21，流通到溝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4 3與從液體燃料槽1 9之液體燃料流 -51 - 200821505 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 46 —同從雙流體噴霧噴嘴3 8的噴霧孔44，噴射到燃燒空 間部1 3。 再者，第9圖的雙流體噴霧器12的其他部分的構造 ，係與上述實施形態例1 (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1 1之雙流體噴霧器以外的部分之構造，均爲與上述實 施形態例1 (第1圖〜第3圖）的雙流體噴霧燃燒裝置i i 相同。 若藉由本實施形態例5的雙流體噴霧燃燒裝置丨i， 可得到與如下的上述實施形態例4相同的作用效果，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5的雙流體噴霧燃燒裝置 1 1 ’由於從液體燃料流出孔44流出並流入到雙流體合流 空間部43的液體燃料24，是構成與在霧化用空氣流路28 流到下方之後，在液體燃料槽1 9之底面2 1流到溝8〗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43良好混合，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8 1的情形相比， -52- 200821505 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38的錐面部（內面38a)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19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）。 而且，由於液體燃料槽1 9之底部21的溝81，是以 在上面視之，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4 3，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24，進一步提昇該液體燃料24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。 •53- 200821505 並且’在本實施形態例4的雙流體噴霧燃燒裝置！ i ，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19之底部21的錐面部（外側部分 21b-l)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2 1 b-1、3 8 a間形成 間隙。因此，能防止霧化用空氣4 6流到溝8 1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 〇圖（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10圖（b )是第1 〇圖（a )之N-N線端的橫 剖面圖。 如第1 〇圖所示，在本實施形態例6的雙流體噴霧1 2 ，係液體燃料槽1 9之底部2 1的內面（上面）2 1 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19之底面21的外面（下面）21 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38，係內面（上面）3 8a爲 尖細（倒圓錐狀）的錐面。 -54- 200821505 在液體燃料槽1 9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91係以等間隔設置在側部20的周方向，下面91a 之外側部分91 a-l，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，係在 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38的內面38a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3 8a 形成在雙流體噴霧噴嘴3 8之中央部的倒圓錐狀之空間。 微細的噴霧孔44，係形成該雙流體合流空間部43的中心 (倒圓錐狀之空間部4 3的頂點位置），連通至雙流體合 流空間部43。即’雙流體合流空間部43係位在液體燃料 流出孔22之下方’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。 在霧化用空氣流路28流到下方的霧化用空氣46，係 通過支撐部9 1之間的霧化用空氣流通部9 3，流通到霧化 用空氣流路9 2，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與從液體燃料槽丨9之液體燃料流出孔 22所流出的液體燃料24形成衝突而合流（混合）。其結 -55- 200821505 孔 造 12 裝 實 11 施 置 間 28 部 流 流 此 料 ， 設 之 體 果，液體燃料24在藉由霧化用空氣46被霧化的狀態下 會與霧化用空氣46 —同從雙流體噴霧噴嘴38的噴霧 44，噴射到燃燒空間部13。 再者，第10圖的雙流體噴霧器12的其他部分的構 ，係與上述實施形態例1(第4圖）的雙流體噴霧器 相同。並且，連有關本實施形態例6之雙流體噴霧燃燒 置11之雙流體噴霧器以外的部分之構造，均爲與上述 施形態例1 (第1圖〜第3圖）的雙流體噴霧燃燒裝置 相同。 若藉由本實施形態例6的雙流體噴霧燃燒裝置1 1 可得到如下的作用效果，並且，其他也能得到與上述實 形態例〗相同的作用效果。 即，若藉由本實施形態例6的雙流體噴霧燃燒裝 11，從液體燃料流出孔22流出並流入到雙流體合流空 部43的液體燃料24，是構成與在第1霧化用氣體流路 流到下方之後，通過支撐部9 1之間的霧化用空氣流通 93，流到第2霧化用空氣流路92，被引導到雙流體合 空間部43的霧化用空氣46，在雙流體合空間部43合 之後，與該霧化用空氣46 —同從噴霧孔44被噴霧，藉 ，從液體燃料槽1 9之液體燃料流出孔22流出的液體燃 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38的噴霧孔44被噴射。因此，與未 置雙流體合流空間部43的情形相比，由於液體燃料24 噴霧的廣角變大，液體燃料24確實的被霧化，因此液 -56- 200821505 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_燃燒裝置之構造的縱剖面圖’弟12圖是第11圖之 〇 _ 〇線端的橫剖面圖。 如第π及1 2圖所示，在本實施形態例7的雙流體噴 霧燃燒裝置1 1，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〗。該等 之燃燒用空氣流通孔1 0 1，均設置在比燃燒用空氣流通孔 5 2 (第1圓筒1 6 )更內側。因而，雖然在燃燒用空氣流 路15流到下方的燃燒用空氣50，主要是通過平板18之 外周側的燃燒用空氣流通孔5 2，流通到第1圓筒丨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 部份會在第1圓筒16的內側，通過燃燒用空氣流通孔 1 〇 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u 之其他部分的構造，係與上述實施形態例1 (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11， 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 1 1，在平板1 8，係在比燃燒用空氣流通孔5 2更內側形成 -57- 200821505 有其他的複數個燃燒用空氣流通孔1 0 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回流，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 0 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38之效果。 <實施形態例8> 第1 4圖（a )是表示有關本發明之實施形態例8之雙 流體噴霧燃燒裝置之構造的縱剖面圖，第1 4圖（b )是第 14圖（a)之P-P線端的橫剖面圖，第15圖是表示雙流 體噴霧器之噴霧孔至節流孔板的距離（L )和燃燒空間部 之直徑（D )之比（L/D )與節流孔板的最佳設置位置之 關係的圖。 如第14圖（a)及第14圖（b)所示，在本實施形態 例8的雙流體噴霧燃燒裝置11，係在燃燒裝置外筒48內 設有節流孔板1 2 1。節流孔板1 2 1係爲在中央部開設有圓 形之流通孔（節流孔）122的圓環狀。而且，節流孔板 121係水平配置在延長的燃燒裝置外筒48之下端部，並 位在平板1 8和第1圓筒1 6等的下方，利用焊接等的固定 手段固定在燃燒裝置外筒48的內面。如第14圖（b )所 示，於平面視之，節流孔板1 2 1之流通孔1 2 2，係位在燃 -58- 200821505 燒空間部1 3的中央部。 因而，在燃燒用空間部1 3流到下方的燃燒用空氣5 〇 ，係藉由如以箭頭表示在第1 4圖（a )的節流孔板1 2 1， 被引導到燃燒空間部13之中央部，通過節流孔板ι21的 流通孔122。再者，節流孔板121未必限定於如實線表示 在第1 4圖（a )中的水平板’亦可爲如中心線假想性表示 在第14圖（a )中的傾斜板（倒圓錐狀的板）。 第14圖的雙流體噴霧燃燒裝置11之其他部分的構造 ，係與上述實施形態例1 (第1圖〜第3圖）的雙流體噴 霧燃燒裝置11相同。 因而，若藉由本實施形態例8的雙流體噴霧燃燒裝置 1 1，可得到與上述實施形態例1相同的作用效果，並且， 也能得到如下的作用效果。 即，若藉由本實施形態例8的雙流體噴霧燃燒裝置 11，由於其特徵爲：構成將中央部開設有流通孔122的節 流孔板1 2 1設置在燃燒空間部1 3，藉由節流孔板1 2〗將 在燃燒空間部1 3流到下方的燃燒用空氣5 〇，引導到燃燒 空間部13之中央部’使其通過卽流孔板1 21的流通孔 122，因此可促進燃燒用空氣50與未然氣體（已噴霧的液 體燃料被加熱而氣化且尙未燃燒者）的混合。其結$，_ 於可促進未燃氣體的燃燒，因此能使燃料完全燃燒，也可 將火炎123短炎化。 若詳述的話’流通至燃燒用空氣流路5 3並從燃燒用 空熱流路5 3之下_流入到燃燒空間部1 3的燃燒用空氣 -59- 200821505 5 0 (在未設置第1圓筒1 6的情況下，通過燃燒用 通孔52，流入到燃燒空間部1 3的燃燒用空氣50 ) 邊在燃燒空間部13流到下方、一邊擴大到燃燒空澤 之中央部，藉此與未燃氣體混合，使該未燃氣體燃 是，燃燒用空氣5 0怎麼樣也普及不到燃燒空間部i 央部，一部份的燃燒用空間5 0不會與未燃氣體混 進一步流到下方。因此，在燃燒空間部1 3沒有節 12的情況下，燃燒用空氣50與未燃氣體的混合延 料的未燃部份（未燃氣體）易殘留，火炎123也變: 對此，如上所述，由於在燃燒空間部1 3設置 板1 2 1的情況下，流到下方的燃燒用空氣5 0，會 孔板1 2 1遮擋，引導到中央部的流通孔1 22 (即燃 部1 3的中央部），因此促進燃燒用空間5 0與未燃 混合，並促進未燃氣體的燃燒。因此，燃料易完全 減低C Ο，火炎1 2 3亦短炎化。 而且，若藉由本實施形態例8的雙流體噴霧燃 1 1，由於燃燒用空氣等的流體會暫時在節流孔板1: 通孔1 2 2被節流，因此流體的流量分佈在周方向被 。因此，亦可藉由燃燒排氣於周方向均勻地加熱爐 再者，如第14圖所示，若雙流體噴霧器12的 44至節流孔板1 2 1的距離爲L，燃燒裝置外筒48 (燃燒空間部13的直徑）爲D，即希望L/D爲2， 範圍內（第15圖的區域1)。由於在L/D小於2 下（第15圖的區域II)，一次供給較多量的空氣 空氣流 ，係一 3部1 3 燒。可 3的中 合，會 流孔板 遲，燃 長。 節流孔 被節流 燒空間 氣體的 燃燒， 燒裝置 Π的流 均勻化 等。 噴霧孔 的內徑 〜10的 的情況 ，火炎 -60- 200821505 易冷卻，因此燃料難以氣化，易產生液滴。另一方面，由 於在L/D大於1 〇的情況下（第1 5圖的區域ΠΙ )，空氣 的供給變慢，與溫度下降的未燃氣體混合的比率變多，因 此難以促進未燃氣體的燃燒（與空氣中的〇 2之反應）。 並且，如第14圖所示，若節流孔板121的流通孔 1 2 2之直徑爲（1，即希望（1/0爲0.2〜0.6的範圍內。若小 於0.2，燃燒空間部13的壓力上昇變大，若大於〇.6，空 φ 氣與未燃氣體的混合效果較薄弱。 <實施形態例9> 第1 6圖（a )是表示有關本發明之實施形態例9之雙 流體噴霧燃燒裝置之構造的縱剖面圖，第1 6圖（b )是第 16圖（a)之Q-Q線端的橫剖面圖。並且，第16圖（c) 是相當於第1 6圖（b )的橫剖面圖，表示螺旋彈簧之其他 構造例的圖。 # 如第1 6圖（a )〜第1 6圖（c )所示，在本實施形態 例9的雙流體噴霧燃燒裝置1 1，係在節流孔板1 2 1之上 側設有螺旋彈簧1 2 4。螺旋彈簧1 2 4係在節流孔板1 2 2的 周邊，沿著流通孔1 22的周方向，以一定的間隔配設複數 片（六片），且藉由焊接等的固定手段固定在節流孔板 121的上面和燃燒裝置外筒48的內面。螺旋彈簧124在 平面視之，全爲沿著圓形之流通孔1 22的略接線方向而設 置。因而，如第16圖（b)及第16圖（c)以箭頭所示， 藉由螺旋彈簧1 24，讓通過節流孔板1 2 1的流通孔1 22之 -61 - 200821505 燃燒用空氣50的流動成爲旋流。 再者，螺旋彈簧1 24並不限於流通孔1 22的接線方向 ，於平面視之，側面相對於流通孔1 22之徑向而傾斜亦可 。而且，螺旋彈簧1 24可爲如第1 6圖（b )的平板狀，亦 可爲如第1 6圖（e )地形成彎曲。 第16圖的雙流體噴霧燃燒裝置11之其他部分的構造 ，係與上述實施形態例1、8 (第1圖〜第3圖、第14圖 )的雙流體噴霧燃燒裝置1 1相同。 因而，若藉由本實施形態例9的雙流體噴霧燃燒裝置 1 1，可得到與上述實施形態例1、8相同的作用效果，並 且，也能得到如下的作用效果。 即，若藉由本實施形態例9的雙流體噴霧燃燒裝置 1 1，由於其特徵爲：在節流孔板1 2 1之上側設置螺旋彈簧 124，構成藉由螺旋彈簧124將通過節流孔板121之流通 孔122的燃燒用空氣5 0之流動，形成旋流，因此，如第 1 6圖（a )以箭頭所示，通過節流孔板1 2丨之流通孔1 22 的燃燒用空氣5 5形成廻旋，藉此朝水平方向擴大。其結 果’由於在流通孔122之下方，燃燒用空氣50流動的中 心部之壓力下降，因此如第i 6圖（a )以箭頭所示，燃燒 用空氣5 0形成從外側流入到前述中心部的循環流。因而 ，由於進一步促進燃燒用空氣5 〇與未燃氣體的混合，並 進一步促進未燃氣體的燃燒，因此燃料更易完全燃燒，火 炎123也更短炎化。 -62- 200821505 <實施形態例l〇> 第1 7圖（a )是表示有關本發明之實施形態例i 〇之 雙流體噴霧燃燒裝置之構造的縱剖面圖，第1 7圖（b )是 第17圖（a)之R-R線端的橫剖面圖。 如第17圖（a)及第17圖（c)所示，在本實施形態 例1 〇的雙流體噴霧燃燒裝置11，係在燃燒空間部1 3設 有複數片（在圖示例爲兩片）多孔板12 5。再者，多孔板 125不限於複數片，亦可爲一片。多孔板125係位在節流 孔板1 21之上方，即平板1 8 (第1圓筒1 6 )與節流孔板 1 2 1之間。 多孔板1 25係爲在中央部開設一個較大徑的流通孔 127，且在其周邊部開設多數個較小徑的孔126的圓環狀 之板。而且，多孔板1 2 5係被水平配置在燃燒空間部1 3 並藉由焊接等的固定手段被固定在燃燒裝置外筒48的內 面。如第17圖（b )所示，於平面視之，多孔板12 5之流 通孔1 27，係位在燃燒空間部1 3的中央部。 因而，在燃燒空間部1 3流到下方的燃燒用空氣5 0的 一部份，係藉由多孔板1 25被引導到中央部的流通孔1 27 (即燃燒空間部1 3的中央部），通過流通孔127，其他 的燃燒用空氣50係通過孔126流到下方。例如在上側的 多孔板1 25，係將朝向該多孔板1 25流到下方的燃燒用空 氣50之中的20%引導到中央部，80%通過孔126進一步 流到下方，在下側的多孔板125，係將朝向該多孔板125 流到下方的燃燒用空氣50之中的40%引導到中央部， -63- 200821505 6 0 %通過孔1 2 6進一步流到下方。 第1 7圖的雙流體噴霧燃燒裝置1 1之其他部分的構造 ，係與上述實施形態例1、8、9(第1圖〜第3圖、第14 圖）的雙流體噴霧燃燒裝置11相同。 因而，若藉由本實施形態例1 0的雙流體噴霧燃燒裝 置1 1，可得到與上述實施形態例1、8、9相同的作用效 果，並且，也能得到如下的作用效果。 Φ 即，若藉由本實施形態例1 〇的雙流體噴霧燃燒裝置 1 1 ’由於其特徵爲：在節流孔板1 2 1的上方將中央部開設 有流通孔1 27的多孔板1 25，設置在燃燒空間部1 3，構成 藉由多孔板125將在燃燒空間部13流到下方的一部份燃 燒用空氣5 0，引導到燃燒空間部1 3之中央部，使其通過 多孔板125的流通孔127，因此進一步促進燃燒用空氣5〇 與未然氣體的混合’由於進一步促進未燃氣體的燃燒，因 此燃料更易完全燃燒，火炎1 2 3也進一步短炎化。 <實施形態例1 1> 第1 8圖是表示有關本發明之實施形態例1 1之燃料電 池發電系統之槪要的系統圖。於第1 8圖是表示以上述實 施形態例1〜1 0的任一個雙流體噴霧燃燒裝置i〗，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。 如第.1 8圖所示，在重組器〗i丨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〗〜i 〇 的任一個雙流體噴霧燃燒裝置1 1。在雙流體噴霧燃燒裝 -64- 200821505 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，有關雙流體嘻霧 燃燒裝置11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體或燈 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 φ 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1 1 1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 113’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11 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1 1回流，在此作爲燃燒裝置燃燒用的氣 體燃料利用。 # 若藉由本實施形態例1 1的燃料電池發電系統，由於 以上述實施形態例1〜1 0的任一個雙流體噴霧燃燒裝置 1 1作爲重組器1 11之熱源使用，因此雙流體噴霧燃燒裝 置11會發揮如上述的優異效果，藉此就能達到重組器 111的性能提昇和成本減低等。 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 -65- 200821505 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 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。 -66- 200821505 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、防回水用的第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 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，藉此在平板的外周側設置燃燒用空氣流通孔亦可。 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 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3 8 )，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〕 本發明係有關一種燃燒裝置，例如應用於用來加熱大 容量之燃料電池發電系統的重組器等，必須使其產生大量 的燃燒排氣之情況等極爲有用。 【圖式簡單說明】 -67- 200821505 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。 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’（b )是（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，（b )是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（（a )之D箭頭方向視圖 )° 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’ （b)是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（（a )之E箭頭方向視圖）。 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 剖面ffl ’ （ b )是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（（a)之F箭頭方向視圖）。 胃8 ®( a )是表示有關本發明之實施形態例4之雙 流體I© 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G_G線端的縱剖面圖），（b )是抽出 酉己It ft ttf _雙流體噴霧器之液體燃料槽所示的仰視圖（（ a )之H箭頭方向視圖），（c )是（b )之I箭頭方向視 -68- 200821505 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（（ Ο之L箭頭方向視圖），（c )是（〇之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N_N線端的橫剖面圖。 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。 弟1 2圖是第1 1圖之〇 - 〇線端之橫剖面圖。 第1 3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 燃料的供給流量產生較大變動之形態的圖。 第1 4圖（a )是表示有關本發明之實施形態例8之雙 流體噴霧燃燒裝置之構造的縱剖面圖，（b )是（a )之 p-p線端的橫剖面圖。 第1 5圖是表示雙流體噴霧器之噴霧孔至節流孔板的 距離（L )和燃燒空間部之直徑（D )之比（L/D )與節流 孔板的最佳設置位置之關係的圖。 第1 6圖（a )是表示有關本發明之實施形態例9之雙 -69- 200821505 流體噴霧燃燒裝置之構造的縱剖面圖，（b )是（a )之 Q-Q線端的橫剖面圖，（c)是相當於（b)的橫剖面圖， 表示螺旋彈簧的其他構造例之圖。 第1 7圖（a )是表示有關本發明之實施形態例1 〇之 雙流體噴霧燃燒裝置之構造的縱剖面圖，第1 7圖（b )是 第1 7圖（a )之R-r線端的橫剖面圖。 第1 8圖是表示有關本發明之實施形態例i〗之燃料電 池發電系統之槪要的系統圖。 【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 / 1 5 :燃燒用空氣流路 16 :第1圓筒 17 :第2圓筒 18 :平板 1 9 :液體燃料槽 20 :側部 20a :內周面 20b :外周面 21 :底部 21a :內面（上面） -70· 200821505 21 b :外面（下面） 2 1 b -1 :外側部分 2 1 b - 2 :內側部分 22 :液體燃料流出孔 2 3 :液面 24 :液體燃料 24A :外形部 _ 25 :液體燃料供給管 25A :前端部（下端部） 26 :墊片 27 :噴霧器外筒 27A :下端部 27B :上端部 28 :霧化用空氣流路 29 :空氣流入孔 Φ 30 ··霧化用空氣供給管 3 0A :前端部 31 :蓋體 3 2，3 3 :螺紋部 3 1 A :下部 3 1 B :段部 34 : 〇形環 3 5 :墊片 3 6 :線圈彈簧 -71 200821505 37 :霧化用氣體導入部 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 φ 4 1 :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 4 6 :霧化用空氣 47 :氣體燃料供給管 48 :燃燒裝置外筒 Φ 48a :內周面 49 :氣體燃料 5 0 :燃燒用空氣 5 1 :突起 52 :燃燒用空氣流通孔 53 :燃燒用空氣流路 54 :火星塞 61 :溝 81 :溝 -72- 200821505 91 :支撐部 9 1 a :下面 91a-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 _ 1 1 2 :燃燒爐 1 1 3 :燃料電池 1 2 1 :節流孔板 1 2 2 :流通孔 123 :火炎 124 :螺旋彈簧 125 :多孔板 126 :孔 # 127 :流通孔 -73-200821505 Party. Thus, the location of the fire is also away from the plate 18, and the coal ash adheres to the underside of the plate 18. Further, although the portion of the combustion air 50 is separated from the position of the liquid fuel 24 by the position of the liquid fuel 24 from the lower side of the flat plate 18, only the flat plate 18 as described above can be obtained, but as in the first embodiment, The combustion air 50 that is provided in the first cylinder 16 for the combustion air supply delay is supplied to the position of the liquid fuel 24, and is actually separated from the lower side of the flat plate 18. Further, since the limit plate 18 of the size of the two-fluid spray combustion device 1 is not too large, and the distance between the two-fluid spray nozzle 38 and the combustion hole 52 is insufficient, the combustion air supplied to the liquid fuel portion is 5 If the amount of 0 is too much, there will be excessive cooling. On the other hand, in the first embodiment of the present embodiment, the first cylinder 16 to which the combustion air is supplied can not only move a part of the combustion air 50 from the position of the liquid fuel 24 from the flat plate 18. The amount of combustion air 50 supplied to a portion of the liquid fuel 24 is an appropriate amount. Therefore, from the related point of view, it is effective to provide the first cylinder 16 of the first embodiment, and it is also possible to reduce the flat plate 18 by setting the first one to achieve the small size of the two-fluid spray combustion apparatus 1 1 and if The two-fluid sprayed fuel cell 1 of the first embodiment of the present invention is provided on the first cylinder side for delaying the supply of combustion air, and is provided on the first cylinder side for delaying the supply of combustion air. Therefore, the backwater (convection) of the liquid fuel 24 can be prevented from being generated in the vicinity of the lower surface of the K plate 18 by the second cylinder 17 for preventing back water, that is, the part of the form can be further improved. Confirmation, etc., a turbulent flow of gas circulation 24 'delayed supply: can be reduced:, formation = implementation of the shape cylinder 16 type. $ Burning device 2nd round 1 6 inside ί stop in flat. Therefore, -40 - 200821505, the liquid fuel 24 which is prevented from returning to the water near the lower surface of the flat plate 18 is also 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 sprayed liquid fuel 24) and the combustion air 50 can be in the combustion space. Part 1 3 is well mixed, so the flammability is improved. <Functional Example 2> Fig. 6(a) is a longitudinal sectional view showing the structure of the lower portion of the two-fluid smog device of the two-fluid spray burner according to the second embodiment of the present invention, Fig. (b) is a plan view showing the two-fluid spray nozzle provided in the two-fluid atomizer described above (the arrow E direction of Fig. 6(a)). As shown in Fig. 6, in the two-fluid spray nozzle 38 of the two-fluid atomizer 12 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 4 3 which is circular in shape viewed above and a central axis of the two-fluid confluence space portion 43 (in the illustrated example, a spray) The central axis of the hole 44 is circumferentially rotationally symmetrical (equally spaced in the circumferential direction). In the two-fluid atomizer 21, the atomizing air 46 flowing downward to the atomizing air flow path 28 flows to the groove 61 of the atomizing air introducing unit 37 in the two-fluid atomizing nozzle 38. Thereby, it is guided to the two-fluid junction space portion 43 in a state where the flow rate is accelerated, and the liquid-fuel 24 flowing out from the liquid fuel outflow hole 22 of the liquid fuel tank 19 is in conflict with the two-fluid junction space -41_200821505 portion 43. Confluence (mixed). 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 to be the same as the atomizing air 46 from the two-fluid mist nozzle 38. The spray hole 44 is injected into the combustion space portion 13. Further, the structure of the other portion of the two-fluid atomizer 1 of Fig. 6 is the same as that of the two-fluid atomizer i 2 of the first embodiment (fourth embodiment). Further, the structure of the portion other than the two-fluid atomizer of the two-fluid spray combustion apparatus 11 of the second embodiment is the two-fluid spray combustion apparatus ii of the first embodiment (the first to third figures). the same. According to the two-fluid spray combustion apparatus η 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 other words, in the two-fluid spray combustion apparatus 1 of the second embodiment, the groove 61 of the atomizing air introduction unit 37 is formed in the upper surface, and is formed along the two-fluid joint space portion 43. Radially, 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 to further improve the combustibility of the liquid fuel 24. Further, since the groove 610 of the atomizing gas introduction portion 37 is formed in a plurality of ways in a positional relationship in which the central axis of the two-fluid merging space portion 43 is rotationally symmetrical, a plurality of pairs are formed. The spray hole 44 of the fluid spray nozzle 38 is uniformly distributed by the circumferential direction of the sprayed liquid fuel 24' and the flammability of the liquid fuel 24 can be improved. <Embodiment 3> Fig. 7(a) is a longitudinal sectional view showing a structure of a lower portion of a two-fluid atomizer of a two-fluid spray combustion apparatus according to Embodiment 3 of the present invention, and Fig. 7(b) The top view shown in the two-fluid spray nozzle equipped with the two-fluid atomizer described above is taken out (the arrow direction view of Fig. 7(a)). As shown in Fig. 7, in the two-fluid spray 12 of the third embodiment, the inner surface (upper surface) 2 1 a of the bottom portion 2 1 of the liquid fuel tank 19 is a tapered (inverted conical) tapered surface. A fine liquid fuel outflow hole 22 is formed at the center (the apex position of the inverted conical taper surface). Further, the outer surface (lower surface) 2 1 b of the bottom surface 2 1 of the liquid fuel tank 19 is a tapered (inverted conical) tapered surface, and the inner portion 21 b-2 is circular. level. 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 3 7b (cone surface) of the atomizing air introduction portion 37 by the outer portion 2 1 b-1 (conical surface portion) of the lower surface 2 1 b of the bottom portion 21 thereof. In the state in which the mode is abutted, it is provided on the atomizing air introduction unit 37. In this case, the liquid fuel tank 1 is pressed downward by the coil spring 36 (refer to Fig. 4), whereby the bottom portion 2 1 b of the bottom portion 2 1 of the liquid fuel - 43 - 200821505 chute 9 is the outer side portion 2 1 b-1 (cone surface) is pressed against the inner peripheral surface 37b (cone surface) of the atomizing air introduction portion 37 to prevent a gap from being formed between the contact surfaces 2 1 b-1 and 3 7b. The nozzle body portion 39 is formed with an inverted conical hollow 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 introducing portion 37 is connected to the space portion 42 of the nozzle body portion 309, and the space portions 41, 42 constitute the two-fluid merging space portion 43. That is, the two-fluid merging space portion 43 has a circular shape in plan view (top view), and has a tapered structure which 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 as the groove type 40 of the groove 40 of Fig. 5, and are formed in the upper direction, forming a wiring direction along the circumference of the two-fluid joint space portion 43, and mutually at the center of the two-fluid confluence space portion 43. The circumference of the shaft is a rotationally symmetrical positional relationship (equal spacing in the circumferential direction). In addition, the groove formed in the atomizing air introduction portion 37 is not limited to the gyro type, and may be the same collision type as in Fig. 6. Further, the structure of the other portion of the two-fluid atomizer 12 of Fig. 7 is the same as that of the two-fluid atomizer 12 of the first embodiment (fourth embodiment). Further, the structure of the portion other than the two-fluid atomizer of the two-fluid spray combustion device 1 of the third embodiment is the two-fluid spray combustion device of the first embodiment (the first to third figures). 1 1 is the same. In the two-fluid spray combustion apparatus 1 i of the third embodiment, the following 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 1 of the third embodiment, the liquid fuel tank 197 is formed by 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 liquid gas tank 19 and the two-fluid spray nozzle 3 are provided in the atomizing gas inlet portion 37 in a state in which they are fitted into the tapered surface portion (inner peripheral surface 37b) of the atomizing gas introduction portion 37. The center axis of 8 is easy to match. Therefore, since the liquid fuel waste 19 is 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 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, in the two-fluid spray combustion apparatus 11 of the third 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 turned toward The atomization air introduction unit 37 of the two-fluid spray nozzle 38 presses the tapered surface portion (outer portion 21b-1) of the bottom portion 2 1 of the fuel tank 19 and the tapered surface of the atomizing air introduction portion 37 (inner circumference) The surface 37b) is formed to be dense, thereby preventing a gap from being formed between the contact faces 2 1 b-1 and 3 7b. Therefore, it is possible to prevent the atomizing air 46 from flowing to a portion other than the groove 40, and to sufficiently exhibit the spraying effect of the wide region due to the groove 40. -45- 200821505 <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) The longitudinal section of the G-G line end), Fig. 8(b) is a bottom view of the liquid fuel tank provided with the two-fluid atomizer described above (the arrow direction view of Fig. 8(a)), the eighth Figure (c) is a view of the arrow direction of Figure 8 (b), and Figure 8 (d) is a cross-sectional view of the JJ line end of the eighth Figure (a). As shown in Fig. 8, the inner surface (upper surface) 21a of the bottom portion 21 of the two-fluid spray 12'-based liquid fuel tank 19 of the fourth embodiment is a tapered (inverted-conical) tapered surface at the center. A fine liquid fuel outflow hole 22 is formed at the vertex position of the conical taper. Further, the outer surface (lower surface) 2 1 b of the bottom surface 2 1 of the liquid fuel tank 19 is a tapered (inverted conical) tapered surface, and the inner portion 2 lb-2 is circular. level. 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) 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 19 is fitted to the inner surface 38a (cone surface) of the two-fluid spray nozzle 38 with 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 on 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 liquid - 46 - 200821505 the bottom 2 1 b of the fuel tank 1 9 is the outer side portion 2 1 b B-1 (cone face) is pressed against the inner surface 38a (tapered surface) of the two-fluid spray nozzle 38 to prevent a gap 〇 between the contact faces 21b-1, 38b and by taper The inner surface 38a of the structure is formed in an inverted conical space portion 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 joint space portion 43 (the vertex position of the inverted cone-shaped space portion 43), and communicates with the two-fluid joint space portion 43. That is, the two-fluid merging space portion 43 has a circular shape in plan view (top view), and has a tapered structure which gradually decreases toward the spray hole 44. Further, on the lower surface 21b 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 flows to the bottom 71 of the liquid fuel tank 19, thereby being guided to the groove 71, thereby being guided to the state in which the flow rate is accelerated. The two-fluid merging space portion 43 forms a swirling 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. 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 combined with the atomizing air 46 from the two-fluid spray nozzle 3. The spray hole 44 of 8 is sprayed to the combustion-47-200821505 burned space portion 1 3 °. Further, the configuration of the other portion of the two-fluid atomizer 12 of Fig. 8 is the same as that of the first embodiment (Fig. 4). The fluid sprayer is the same. Further, the structure of the portion other than the two-fluid atomizer for the two-fluid spray combustion device 11 of the fourth embodiment is the same as the two-fluid spray combustion device of the first embodiment (the first to third figures). . According to the two-fluid spray combustion apparatus η of the third 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 device 1 of the fourth embodiment, the liquid fuel 24 that has flowed out from the liquid fuel outflow hole 44 and flows into the two-fluid space portion 43 constitutes a flow path for the atomizing air. After flowing to the lower side, the atomizing air 46 that has flowed to the groove 7 1 in the bottom surface 2 1 of the liquid fuel tank 19 to the two-fluid combining space portion 43 merges with the atomizing air 46 after the double-flow space portion 43 merges. - a structure in which the spray 44 is sprayed, whereby the liquid fuel 24 and the atomizing air 46 which is rapidly added by the groove 71 (the speed component in the horizontal direction is increased) are well mixed in the double body air portion 43 from the spray. Hole 44 is sprayed. Since the wide angle of the spray of the liquid fuel 24 becomes larger as compared with the case where the two-fluid combining space portion 43 and the groove 7 1 are not provided, the liquid fuel 24 is surely atomized, so that the combustibility of the liquid fuel 24 is improved. Further, since the liquid fuel tank 19 is embedded in the tapered portion of the liquid fuel tank 19 (the outer portion 21b-1 of the lower surface 21b of the bottom portion 21), the flow of the body flow is caused by the body flow. -48- 200821505 The two-fluid spray nozzle 38 is disposed on the two-fluid spray nozzle 38 in a state in which the tapered surface (inner surface 38 a ) abuts, and thus, the liquid fuel tank 19 and the two-fluid spray nozzle 38 The center axis is easy to match. Thus < The liquid fuel waste 19 is not a single side, but is a width of the atomizing air flow path 28 formed in the circumferential direction, and the atomizing gas for forming the atomizing air flow path 28 in the circumferential direction can be uniformly formed. The flow of 46 thus 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 forms a swirling flow mixed 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 dual fluid spray nozzle 38 can be more reliably atomized, and the flammability of the liquid fuel 24 can be further increased. Further, since the groove 71 of the bottom portion 21 of the liquid fuel tank 9 is formed in a plurality of positions in which the central axis of the two-fluid joint space portion 43 is rotationally symmetrical, the spray from the two-fluid spray nozzle 38 is formed. The hole 44 is uniformly distributed in the circumferential direction of the sprayed liquid fuel 24, and the combustibility of the liquid fuel 24 can be improved. Further, in the two-fluid spray combustion apparatus 11 of the fourth embodiment, the liquid fuel tank 1 is pressed downward by the coil spring 36 (see Fig. 4), whereby the bottom 21 of the liquid fuel tank 9 is turned toward the double The fluid spray nozzle 38 is pressed to make the tapered surface (outer portion - 49 - 200821505 2 1 b-1 ) of the bottom portion 21 of the fuel tank 19 and the tapered surface of the two-fluid spray nozzle 38 (the inner surface is sealed, whereby The contact surface 2 1 b-1 and the gap are prevented. Therefore, the atomizing air 46 can be prevented from flowing to the groove 71, and the spray effect of the wide area due to the groove 7 1 can be sufficiently exerted. <Embodiment 5> Fig. 9(a) is a cross-sectional view showing the lower side of the two-fluid atomizer of the embodiment f fluid spray combustion apparatus according to the present invention, (a cross-sectional view of the KK line end of Fig. 9(b) (b) is a bottom view of the liquid provided in the two-fluid atomizer (Fig. 9 (a) in the direction of the arrow L), and is a cross-sectional view of the MM line end of Fig. 9(a). As shown in Fig. 9, in the fifth embodiment of the present embodiment, the inner surface (upper surface) (inverted conical shape) of the bottom portion 21 of the liquid fuel tank 19 is at the center (inverted conical shape) A fine liquid fuel outflow hole 22 is formed. Further, the outer surface (lower surface) 21b of the bottom surface 21 of the groove 19 has a tapered (inverted conical) tapered surface and an inner portion 21b-2 horizontal plane. On the other hand, the two-fluid spray nozzle 38 does not have an introduction portion (see Fig. 7), and the lower end of the nebulizer outer tube 27, which is a nebulizer outer tube 27 (may be fixed by welding or the like). The two-fluid spray nozzle 38 is a tapered surface of the inner surface (upper surface 38a). Therefore, the liquid fuel tank 19 has a structure in which a portion other than the formation of 38a is formed between the portions 38a and 5, and the fuel tank shown in Fig. 9 is shown in Fig. 9 (c is a tip of the commercial spray 12 2 1 a). The vertex position of the fine surface, the liquid fuel enthalpy portion 2 1 b -1 is formed in the shape of a crucible atomizing air, and the other one is tapered (pour down to the bottom of the bottom - 50 - 200821505 2 1 2 1 b The outer portion 2 1 b-1 (conical surface) is placed on the inner surface 38a (conical surface) of the two-fluid spray nozzle 38 so as to be in contact with the two-fluid spray nozzle 38. In this case, The liquid fuel tank 19 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 (cone portion) The inner surface 38 a (cone surface) of the two-fluid spray nozzle 38 is pressed and adhered to prevent a gap from being formed between the contact surfaces 21b-1 and 38b. Further, the inner surface 38a of the tapered structure is formed. The inverted conical space in the central portion of the two-fluid spray nozzle 38 is a two-fluid confluence space portion 43. The fine spray hole 44 The center of the two-fluid confluence space portion 43 (the vertex position of the inverted conical space portion 43) is formed, and is communicated to the two-fluid confluence space portion 43. That is, the two-fluid confluence space portion 43 is viewed from the top (top view) It is a circular shape, and its diameter is a tapered structure which gradually shrinks toward the spray hole 44. Further, 'on the lower surface 21b side of the bottom portion 21 of the liquid fuel tank 19, it is formed at four places in the circumferential direction thereof. Grooves (cracks) 81. These grooves 81 are of a conflicting type formed on the upper side, along the radial direction of the two-fluid confluence space portion 4 3 and are rotationally symmetric about the central axis of the two-fluid confluence space portion 43. The positional relationship (equal intervals in the circumferential direction). Therefore, the atomizing air 4 6 ' flowing to the lower portion of the air passage 28 for heating is attached to the bottom 21 of the liquid fuel tank 19, and flows to the groove 81. Thereby, in the state where the flow rate is accelerated, it is guided to the two-fluid confluence space portion 43, where the liquid fuel flows out from the liquid fuel flow-51 - 200821505 outlet hole 22 of the liquid fuel tank 19. 24 conflicts and merge (mixed). The result, liquid The material 24 is well mixed with the atomizing air 46, and the liquid fuel 24 is atomized by the atomizing air 46, and is sprayed from the atomizing air 46 to the spray hole 44 of the two-fluid spray nozzle 38. The structure is injected into the combustion space portion 13. The structure 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 the first embodiment (Fig. 4). The structure of the portion other than the two-fluid atomizer of the two-fluid spray combustion apparatus 1 of the fifth embodiment is the same as that of the two-fluid spray combustion apparatus ii of the first embodiment (the first to third figures). According to the two-fluid spray combustion apparatus 丨i of the fifth embodiment, the same operational effects as those of the fourth embodiment described below can be obtained, and the same operational effects as those of the first embodiment can be obtained. In other words, the two-fluid spray combustion apparatus 1 1 ' according to the fifth embodiment of the present invention is configured as a flow path for the atomizing air by the liquid fuel 24 flowing out of the liquid fuel outflow hole 44 and flowing into the two-fluid joint space portion 43. After flowing to the lower side, the atomizing air 46 that has flowed to the groove 8 in the bottom surface 21 of the liquid fuel tank 19 and guided to the two-fluid joint space portion 43 merges with the mist in the two-fluid space portion 43 The chemical air 46 is configured to be sprayed from the spray hole 44, 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. It is well mixed and sprayed from the spray holes 44. Therefore, compared with the case where the two-fluid combining space portion 43 and the groove 8 1 are not provided, -52-200821505, since the wide angle of the spray of the liquid fuel 24 becomes large, the liquid fuel 24 is surely atomized, so the combustion of the liquid fuel 24 Sexual improvement. Further, since the liquid fuel tank 195 is fitted into 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 surface 38a) 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 waste 19 is not one side, and the width of the atomizing air flow path 28 is uniformly formed in the circumferential direction, the atomizing gas for forming the atomizing air flow path 28 in the circumferential direction can be uniformly formed. The flow of 46 thus 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, since the groove 81 of the bottom portion 21 of the liquid fuel tank 19 is formed in the above-described manner along the wiring direction of the circumference of the two-fluid joint space portion 43, whereby the two-fluid junction space portion 4 3 The atomizing air 46 forms a swirling flow 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 sprayed from the spray holes 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 plurality of grooves 81 of the bottom portion 21 of the liquid fuel tank 19 are formed in a rotationally symmetrical positional relationship in the central axis of the two-fluid joint space portion 43, 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 is uniform, and the flammability of the liquid fuel 24 can be improved. • 53- 200821505 and 'The two-fluid spray combustion apparatus of the fourth embodiment! i, pressing the liquid fuel tank 1 9 by the coil spring 36 (refer to Fig. 4), thereby pressing the bottom 2 1 of the liquid fuel tank 19 toward the two-fluid spray nozzle 38 to make the bottom of the fuel tank 19 The tapered surface portion (outer portion 21b-1) of 21 forms a close contact with the tapered surface (inner surface 38a) of the two-fluid spray nozzle 38, thereby preventing contact between the contact faces 2 1 b-1, 3 8 a A gap is formed. Therefore, it is possible to prevent the atomizing air 46 from flowing to a portion other than the groove 8 1 to sufficiently exert the spraying effect of the wide region due to the groove 81. <Embodiment 6> FIG. 1(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 6 of the present invention, and FIG. 10(b) ) is a cross-sectional view of the NN line end of the first diagram (a). As shown in Fig. 1, the two-fluid spray 1 2 of the sixth embodiment is a tapered (inverted conical) cone on the inner surface (upper surface) 2 1 a of the bottom portion 2 1 of the liquid fuel tank 19. On the surface, a fine liquid fuel outflow hole 22 is formed at the center (the apex position of the inverted conical taper surface). Further, the outer surface (lower surface) 21b of the bottom surface 21 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). In the two-fluid spray nozzle 38, the inner surface (upper surface) 38a is a tapered (inverted conical) tapered surface. -54- 200821505 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 in the system. The support portions 91 are provided at equal intervals in the circumferential direction of the side portion 20, and the outer portions 91a-1 of the lower surface 91a are tapered surfaces that are inclined inward along the inner surface 38a of the two-fluid spray nozzle 38. Therefore, the liquid fuel tank 179 is supported in a state in which 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, and as a result, in the liquid Between the outer surface 2 1 a of the bottom portion 2 1 of the fuel tank 19 and the inner surface 38a 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 merging space portion 43 is an inverted conical space formed in the central portion of the two-fluid spray nozzle 38 by the inner surface 38a of the tapered structure. The fine spray hole 44 forms the center of the two-fluid joint space portion 43 (the vertex position of the inverted conical space portion 43), and communicates with the two-fluid junction space portion 43. That is, the 'two-fluid merging space portion 43 is positioned below the liquid fuel outflow hole 22' in a plan view (top view) as a circular shape, and its diameter is a tapered structure that gradually decreases toward the spray hole 44. The atomizing air 46 that has flowed down to the atomizing air flow path 28 passes through the atomizing air circulation portion 93 between the support portions 91, and flows to the atomizing air flow path 92, and is guided to The two-fluid joint space portion 43 merges (mixes) 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. The knot-55-200821505 hole-making 12-loading 11-parting room 28 parts flow this material, the body fruit, the liquid fuel 24 is atomized by the atomizing air 46 and the atomizing air 46 - The spray 44 from the two-fluid 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. 10 is the same as that of the two-fluid atomizer of the first embodiment (fourth embodiment). Further, the structure of the portion other than the two-fluid atomizer of the two-fluid spray-burning device 11 of the sixth embodiment is the same as that of the two-fluid spray combustion device of the first embodiment (the first to third figures). . According to the two-fluid spray combustion apparatus 1 1 of the sixth embodiment, the following effects can be obtained, and the same operational effects as those of the above-described embodiment can be obtained. In other words, in the two-fluid spray combustion device 11 of the sixth embodiment, the liquid fuel 24 that has flowed out of the liquid fuel outflow hole 22 and flows into the two-fluid merging portion 43 is configured as the first atomizing gas flow path. After flowing to the lower side, the atomizing air flow 93 between the support portions 91 flows to the second atomizing air flow path 92, and is guided to the atomizing air 46 of the two-fluid space portion 43 in the double After the fluidizing space portion 43 is closed, the atomizing air 46 is sprayed from the spray hole 44, and the liquid fuel 24 flowing out of the liquid fuel outflow hole 22 of the liquid fuel tank 19 and the atomizing air 46 are sprayed. After the two-fluid combining space portion 43 is mixed, it is 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 flammability of the liquid - 56 - 200821505 fuel is improved. <Embodiment 7> FIG. 1 is a longitudinal cross-sectional view showing a structure of a two-fluid ejection-combustion apparatus according to Embodiment 7 of the present invention, and FIG. 12 is a cross section of the 〇_ 〇 line end of FIG. Figure. As shown in the πth and 12th views, in the two-fluid spray combustion apparatus 1 of the seventh embodiment, the flat plate 18 is formed into a perforated plate. That is, a plurality of combustion air flow holes 1 are formed in the annular flat plate 18. These combustion air passage holes 010 are provided inside the combustion air passage hole 5 2 (first cylinder 16). Therefore, the combustion air 50 that has flowed down to the combustion air flow path 15 mainly flows through the combustion air circulation hole 52 on the outer peripheral side of the flat plate 18, and flows into the combustion air outside the first cylinder 6 After the flow path 5 3 , the flow space portion 13 flows into the combustion space portion 13 , but a portion thereof flows into the combustion space portion 13 through the combustion air flow hole 1 〇 1 inside the first cylinder 16 . Further, the other portions of the two-fluid spray combustion apparatus u of Figs. 11 and 12 are the same as those of the two-fluid spray combustion apparatus 1 1 of the first embodiment (the first to third figures). According to the two-fluid spray combustion apparatus 11 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 1 of the seventh embodiment, the flat plate 18 is formed inside the combustion air passage hole 5 2 -57-200821505, and a plurality of other combustion air passage holes are formed. 1 0 1, whereby a part of the combustion air 50 passes through the combustion air circulation holes 1 0 1 , so that the flow of the combustion air 50 can be suppressed by the flow of the combustion air 50. The reflux of the combustion air is generated in the vicinity of the lower side to suppress the adhesion of the coal ash to the lower surface 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 101, 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. 4(a) is a longitudinal cross-sectional view showing a structure of a two-fluid spray combustion apparatus according to an eighth embodiment of the present invention, and FIG. 14(b) is a 14th view (a) Cross-sectional view of the PP line end, Figure 15 shows the ratio (L/D) of the distance from the spray hole to the orifice plate of the two-fluid atomizer to the orifice (D) and the orifice A diagram of the relationship between the optimal placement of the board. As shown in Figs. 14(a) and 14(b), in the two-fluid spray combustion apparatus 11 of the eighth embodiment, an orifice plate 221 is provided in the outer cylinder 48 of the combustion apparatus. The orifice plate 1 2 1 is an annular shape in which a circular flow hole (throttle hole) 122 is opened in the center portion. Further, the orifice plate 121 is horizontally disposed at the lower end portion of the elongated burner outer cylinder 48, and is positioned below the flat plate 18 and the first cylinder 16 and the like, and is fixed to the outside of the combustion device by means of fixing means such as welding. The inner face of the barrel 48. As shown in Fig. 14(b), in the plan view, the flow hole 1 2 2 of the orifice plate 1 2 1 is located at the center of the burning space portion 13 of the burning -58-200821505. Therefore, the combustion air 5 流 flowing to the lower side in the combustion space portion 13 is guided to the combustion space portion 13 by the orifice plate 1 2 1 shown in Fig. 4(a) by an arrow. The central portion passes through the flow hole 122 of the orifice plate ι21. Further, the orifice plate 121 is not necessarily limited to the horizontal plate as shown by the solid line in Fig. 14(a), and may be an inclined plate (inverted cone) as shown in Fig. 14(a) as the center line is imaginatively represented. Shaped board). The structure of the other portion of the two-fluid spray combustion apparatus 11 of Fig. 14 is the same as that of the two-fluid spray combustion apparatus 11 of the first embodiment (the first to third figures). Therefore, according to the two-fluid spray combustion apparatus 1 1 of the eighth embodiment, the same operational effects as those of the first embodiment described above can be obtained, and the following effects can be obtained. In other words, the two-fluid spray combustion apparatus 11 of the eighth embodiment is characterized in that an orifice plate 1 2 1 having a flow hole 122 in the center portion is formed in the combustion space portion 13 by the section. The orifice plate 1 2 flows to the lower combustion air 5 在 in the combustion space portion 13 and is guided to the central portion of the combustion space portion 13 to pass through the flow hole 122 of the orifice plate 1 21, thereby promoting The combustion air 50 is mixed with the undesired gas (the liquid fuel that has been sprayed is heated to be vaporized and not burned). The knot $, _ can promote the combustion of unburned gas, so that the fuel can be completely burned, and the fire 123 can be shortened. If it is described in detail, the combustion air that flows to the combustion air flow path 5 3 and flows from below the combustion air heat flow path 5 3 to the combustion space portion 13 - 59 - 200821505 5 0 (the first circle is not set) In the case of the cylinder 16 , the combustion air 50 that has flowed into the combustion space portion 13 through the through hole 52 for combustion flows downward in the combustion space portion 13 and expands to the central portion of the combustion space. When the unburned gas is mixed, the unburned gas is burned, and the combustion air 50 is not popularized in the combustion space portion, and a part of the combustion space 50 is not mixed with the unburned gas. Below. Therefore, in the case where the combustion space portion 13 does not have the knuckle 12, the unburned portion (unburned gas) of the mixed air of the combustion air 50 and the unburned gas is liable to remain, and the smoldering 123 also changes: In the case where the plate 1 1 1 is provided in the combustion space portion 13 , the combustion air 50 flowing downward is blocked by the orifice plate 1 2 1 and guided to the flow hole 1 22 at the center portion (ie, the combustion portion 1) The central portion of 3) thus promotes the mixing of the combustion space 50 with unburned gas and promotes combustion of the unburned gas. Therefore, the fuel is easy to completely reduce C Ο, and the fire 127 is also short-lived. Further, according to the two-fluid spray of the eighth embodiment, the fluid such as combustion air is temporarily throttled in the orifice plate 1: the through hole 1 2 2 , so that the flow rate of the fluid is distributed in the circumferential direction. Be. Therefore, the furnace can be uniformly heated in the circumferential direction by burning the exhaust gas. As shown in FIG. 14, if the distance from the 44 to the orifice plate 1 2 1 of the two-fluid atomizer 12 is L, the outer tube of the combustion device 48 (diameter of the combustion space portion 13) is D, that is, it is desirable that L/D is 2 in the range (region 1 of Fig. 15). Since L/D is less than 2 (area II in Fig. 15), a large amount of air-air flow is supplied at a time, and a portion of 3 3 is burned. The combination of 3 can cause the orifice plate to be late and burn. The orifice is throttled, the space is burned, the gas is burned, and the flow of the burner is homogenized. The inner diameter of the spray hole is ~10. The fire is -60-200821505. It is easy to cool, so the fuel is difficult to vaporize and droplets are easily generated. On the other hand, when L/D is larger than 1 ( (region ΠΙ in Fig. 15), the supply of air becomes slow, and the ratio of mixing with the unburned gas whose temperature is lowered increases, so that it is difficult to promote the unburned gas. Combustion (reaction with 〇2 in the air). Further, as shown in Fig. 14, the diameter of the flow hole 1 2 2 of the orifice plate 121 is (1, that is, it is desirable (1/0 is in the range of 0.2 to 0.6. If less than 0.2, the combustion space portion 13 is The pressure rise becomes larger, and if it is larger than 〇.6, the mixing effect of the empty φ gas and the unburned gas is weak. <Embodiment 9> Fig. 16 (a) is a longitudinal sectional view showing a structure of a two-fluid spray combustion apparatus according to Embodiment 9 of the present invention, and Fig. 16 (b) is a sixteenth diagram (a) ) A cross-sectional view of the QQ line end. Further, Fig. 16(c) is a cross-sectional view corresponding to Fig. 16(b), showing a view of another structural example of the coil spring. As shown in Fig. 16 (a) to Fig. 6 (c), the two-fluid spray combustion apparatus 1 of the ninth embodiment is provided with a coil spring on the upper side of the orifice plate 1 2 1 . 1 2 4. The coil springs 1 2 4 are disposed around the orifice plate 12 2 and are provided with a plurality of sheets (six pieces) at regular intervals along the circumferential direction of the flow holes 1 22 and fixed by fixing means such as welding. The upper surface of the orifice plate 121 and the inner surface of the outer tube 48 of the burner. The coil springs 124 are disposed in plan view and are all disposed along the direction of the wiring of the circular flow holes 1 22 . Therefore, as shown by the arrows in Figs. 16(b) and 16(c), the air for the passage through the orifice 1 22 of the orifice plate 1 22 is made by the coil spring 1 24 -61 - 200821505 The flow of 50 becomes a swirl. Further, the coil spring 1 24 is not limited to the wiring direction of the flow hole 1 22, and the side surface may be inclined with respect to the radial direction of the flow hole 1 22 in plan view. Further, the coil spring 1 24 may have a flat shape as shown in Fig. 16 (b), or may be curved as shown in Fig. 16 (e). The structure of the other portion of the two-fluid spray combustion apparatus 11 of Fig. 16 is the same as that of the two-fluid spray combustion apparatus 1 1 of the above-described first and eighth embodiments (Figs. 1 to 3 and Fig. 14). Therefore, according to the two-fluid spray combustion apparatus 1 1 of the ninth embodiment, the same operational effects as those of the first and eighth embodiments can be obtained, and the following effects can be obtained. In other words, the two-fluid spray combustion apparatus 1 of the ninth embodiment is characterized in that a coil spring 124 is provided on the upper side of the orifice plate 1 2 1 so as to pass through the orifice plate by the coil spring 124. The flow of the combustion air 50 in the flow hole 122 of 121 forms a swirling flow. Therefore, as shown by the arrow in Fig. 16, the combustion air passing through the flow hole 1 22 of the orifice plate 1 2 5 5 forms a mediation, thereby expanding in a horizontal direction. As a result, the pressure at the center portion through which the combustion air 50 flows is lower than the flow hole 122. Therefore, as indicated by an arrow in Fig. 6(a), the combustion air 50 flows from the outside to the center portion. The circulation of the stream. Therefore, since the mixing of the combustion air 5 〇 and the uncombusted gas is further promoted, and the combustion of the unburned gas is further promoted, the fuel is more easily burned, and the flame 123 is also shorter and inflamed. -62- 200821505 <Embodiment Example 1> Fig. 17 (a) is a longitudinal sectional view showing a structure of a two-fluid spray combustion apparatus according to an embodiment of the present invention, and Fig. 17 (b) is a 17th. Figure (a) is a cross-sectional view of the RR line end. As shown in Fig. 17 (a) and Fig. 17 (c), in the two-fluid spray combustion apparatus 11 of the first embodiment, a plurality of sheets are provided in the combustion space portion 13 (two in the illustrated example). Sheet) Porous plate 12 5 . Further, the perforated plate 125 is not limited to a plurality of sheets, and may be one piece. The perforated plate 125 is positioned above the orifice plate 121, i.e., between the plate 18 (the first cylinder 16) and the orifice plate 1 21. The perforated plate 185 is an annular plate in which a large-diameter flow hole 127 is formed in the center portion, and a plurality of holes 126 having a small diameter are formed in the peripheral portion thereof. Further, the perforated plate 1 2 5 is horizontally disposed in the combustion space portion 13 and fixed to the inner surface of the outer casing 48 of the combustion apparatus by a fixing means such as welding. As shown in Fig. 17(b), in the plan view, the through hole 127 of the perforated plate 12 5 is positioned at the central portion of the combustion space portion 13. Therefore, a portion of the combustion air 50 flowing to the lower portion in the combustion space portion 13 is guided to the flow hole 1 27 at the center portion by the perforated plate 156 (that is, the central portion of the combustion space portion 13). Through the circulation hole 127, the other combustion air 50 flows downward through the hole 126. For example, the perforated plate 152 on the upper side guides 20% of the combustion air 50 flowing downward to the perforated plate 155 to the center portion, 80% further flows through the hole 126 to the lower side, and the perforated plate on the lower side. 125, the 40% of the combustion air 50 flowing downward to the perforated plate 125 is guided to the center portion, and -63-200821505 6 0% further flows downward through the hole 126. The structure of the other part of the two-fluid spray combustion apparatus 1 of Fig. 7 is the same as that of the two-fluid spray combustion apparatus 11 of the first, eighth, and eighth embodiments (first to third, fourth and fourth embodiments). . Therefore, according to the two-fluid spray combustion apparatus 1 1 of the first embodiment, the same effects as those of the first, eighth, and eighth embodiments can be obtained, and the following effects can be obtained. Φ That is, the two-fluid spray combustion apparatus 1 1 ' according to the first embodiment of the present embodiment is characterized in that a perforated plate 135 having a flow hole 1 27 is opened at a central portion above the orifice plate 1 2 1 . It is provided in the combustion space portion 13 and is configured to guide a portion of the combustion air 50 flowing downward in the combustion space portion 13 by the perforated plate 125 to the central portion of the combustion space portion 13 to pass through the perforated plate 125. The flow hole 127 further promotes the mixing of the combustion air 5 〇 with the unavailability gas. Since the combustion of the unburned gas is further promoted, the fuel is more easily burned, and the flame 127 is further shortened. <Embodiment 1 1> Fig. 8 is a schematic diagram showing a schematic diagram of a fuel cell power generation system according to an embodiment 1 of the present invention. Fig. 18 is a view showing an example of a case where the two-fluid spray combustion apparatus of the above-described Embodiments 1 to 10 is used as a heat source of a recombiner of a fuel cell power generation system. As shown in Fig. 18, a combustion furnace 1 1 2 is provided in the upper portion of the reformer, and a two-fluid spray of the above-described embodiment of the present invention is inserted from the upper surface of the combustion furnace 1 1 2 . Combustion device 1 1. In the two-fluid spray combustion apparatus-64-200821505, a liquid fuel supply system, an atomization air supply system, and a combustion air supply system, which are not shown, are connected. Further, the details of the two-fluid mist-fogging device 11 are as described above. The recombiner 111 is connected to a raw material supply system (not shown), and a reconstituted fuel such as a hospital 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 the large amount of combustion exhaust gas φ generated by the combustion of the two-fluid spray combustion device 11, thereby generating a reformed gas (hydrogen-rich gas). The reformed gas produced by the reformer 1 1 1 is supplied to the anode side of the fuel cell 1 13 as a fuel for power generation. The fuel cell 113' causes an electrochemical reaction between the reformed gas (hydrogen) supplied to the anode side and the air (oxygen) supplied to the cathode side, thereby generating electricity. The recombined gas which is not used for power generation in the fuel cell 113 is returned to the dual-fluid spray combustion apparatus 1 and is used as a gaseous fuel for combustion of the combustion apparatus. In the fuel cell power generation system according to the first embodiment, the two-fluid spray combustion apparatus 1 of the above-described first to tenth embodiments is used as a heat source of the recombiner 1 11 , so that the two-fluid spray combustion apparatus is used. 11 will exert the excellent effects as described above, whereby the performance improvement and cost reduction of the recombiner 111 can be achieved. Further, in the above, only one liquid fuel outflow hole 22 is provided in the liquid fuel tank 19. However, the present invention is not limited thereto, and a plurality of liquid fuel outflow holes 22 may be provided. Further, in the above, the liquid -65-200821505 fuel outflow hole is provided at the bottom of the liquid fuel tank, but it is not limited thereto, and the 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 collision type is provided in 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, as described above, the structure (invention) of providing a flat plate (shutter), a first cylinder for delaying supply of combustion air, and a second cylinder for preventing back water is not limited to being sprayed. The two-fluid spray combustion device equipped with the above-mentioned two-fluid atomizer of liquid 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. . In addition, in the above, a projection is formed on the outer circumference of the flat plate (shutter), and a combustion air circulation hole is provided on the outer peripheral side of the flat plate (shutter). However, the present invention is not limited thereto, and the flat plate (shading plate) is not limited thereto. 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 flat plate. 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 18 may have a conical shape. In the case of the inclined flat plate, not only the combustion air is separated from the fuel injection nozzle (two-fluid spray nozzle 38), but also has the same function as the first cylinder that delays the supply of the combustion air. [Industrial Applicability] The present invention relates to a combustion apparatus which is useful, for example, in a recombinator for heating a large-capacity fuel cell power generation system, etc., and it is necessary to generate a large amount of combustion exhaust gas. [Brief Description of the Drawings] -67-200821505 Fig. 1 is a longitudinal sectional view showing the structure of a two-fluid spray combustion apparatus according to Embodiment 1 of the present invention. Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1. Fig. 3 is a cross-sectional view taken along line B-B of Fig. 1. Fig. 4(a) is a cross-sectional view showing the enlarged longitudinal sectional view (b) of the two-fluid atomizer equipped with the two-fluid spray burner of Fig. 1 taken along the line C-C of (a). Figure 5(a) is a longitudinal sectional view showing the lower side portion of the two-fluid atomizer, and (b) is a plan view showing the two-fluid spray nozzle provided in the two-fluid atomizer (D arrow (a) Fig. 6(a) is a longitudinal sectional view showing the structure of the lower side portion of the two-fluid atomizer of the two-fluid spray burner according to the second embodiment of the present invention, in which (b) is extracted in the aforementioned double A top view of the two-fluid spray nozzle of the fluid atomizer (E arrow direction view of (a)). Fig. 7(a) is a longitudinal section ffl' (b) showing the structure of the lower side portion of the two-fluid atomizer of the two-fluid spray burner according to the third embodiment of the present invention, which is a pair of the two-fluid atomizers The top view shown by the fluid spray nozzle (the arrow direction view of (a)). The stomach 8 ® (a) is a longitudinal cross-sectional view showing the structure of the lower side portion of the two-fluid atomizer of the two-fluid I_ combustion apparatus according to the fourth embodiment of the present invention (the longitudinal cross-sectional view of the G_G line end of (b)), (b) is the bottom view of the liquid fuel tank of the extracted It ft ttf _ two-fluid atomizer ((a) in the direction of the arrow H direction), (c) is the direction of the arrow (b) I-68-200821505 Fig., (d) 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 (a sectional view of the K-K line end of (b)) (b) is a bottom view showing the liquid fuel tank provided in the two-fluid atomizer described above ((the direction of the arrow L direction), and (c) is a cross-sectional view of the M-Μ line end of the 。. (a) is a longitudinal cross-sectional view showing a structure of a lower portion of a two-fluid atomizer of a two-fluid sprayer according to a sixth embodiment of the present invention, and (b) is a cross-sectional view of the N_N line end of (a). Fig. 1 is a longitudinal sectional view showing the structure of a two-fluid spray combustion apparatus according to an embodiment 7 of the present invention. Fig. 1 2 is a cross-sectional view of the 〇-〇 line end of Fig. 11. Figure (a) is a view showing a form 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, and (b) is shown in a conventional two-fluid spray combustion apparatus. The form of liquid fuel supply flow is greatly changed. Fig. 14(a) is a longitudinal sectional view showing the structure of a two-fluid spray combustion apparatus according to an eighth embodiment of the present invention, and (b) is a cross-sectional view taken along the line pp of (a). Figure 5 is a graph showing the relationship between the distance (L) of the spray hole to the orifice plate of the two-fluid atomizer and the diameter (D) of the combustion space portion (L/D) and the optimum position of the orifice plate. Fig. 16(a) is a longitudinal sectional view showing the structure of a bis-69-200821505 fluid spray combustion apparatus according to an embodiment 9 of the present invention, and (b) is a cross-sectional view of the QQ line end of (a). (c) is a cross-sectional view corresponding to (b), and is a view showing another structural example of the coil spring. Fig. 17(a) is a view showing the structure of the two-fluid spray combustion apparatus according to the first embodiment of the present invention. Fig. 17(b) is a cross-sectional view of the Rr line end of Fig. 7(a). Fig. 18 is a view showing a fuel cell power generation system according to an embodiment of the present invention. System diagram required [Main component symbol description] 11 : Two-fluid spray burner 1 2 : Two-fluid atomizer 1 3: combustion space portion 14: gas fuel flow path / 1 5 : combustion air flow path 16: first cylinder 17: second cylinder 18: flat plate 19: liquid fuel tank 20: side portion 20a: inner circumference Face 20b: outer peripheral surface 21: bottom 21a: inner surface (upper surface) -70·200821505 21 b: outer (lower) 2 1 b -1 : outer portion 2 1 b - 2 : inner portion 22: liquid fuel outflow hole 2 3 : liquid level 24 : liquid fuel 24A : outer shape portion _ 25 : liquid fuel supply pipe 25A : front end portion (lower end portion) 26 : spacer 27 : sprayer outer tube 27A : lower end portion 27B : upper end portion 28 : atomizing air flow Road 29: Air inflow hole Φ 30 · · Atomizing air supply pipe 3 0A : Front end portion 31 : Cover body 3 2, 3 3 : Screw portion 3 1 A : Lower portion 3 1 B : Segment portion 34 : Cylinder ring 3 5: spacer 3 6 : coil spring - 71 200821505 37 : atomization gas introduction portion 37 a : upper surface 37b · inner circumferential surface 3 8 : two-fluid spray nozzle 3 8a : inner surface (upper surface) 3 9 : nozzle body portion 40: groove φ 4 1 : space portion 42 : space portion (recessed portion) 43 : two-fluid merging space portion 44 : spray hole 45 : gap 4 6 : atomizing air 47 : gas fuel supply pipe 48 : burning Device outer cylinder Φ 48a : inner peripheral surface 49 : gaseous fuel 50 : combustion air 5 1 : projection 52 : combustion air flow hole 53 : combustion air flow path 54 : spark plug 61 : groove 81 : groove - 72 - 200821505 91 : support portion 9 1 a : lower surface 91a-1 : outer portion 92 : atomization air flow path 93 : atomization air circulation portion 1 〇 1 : combustion air flow hole 1 1 1 : recombinator _ 1 1 2: Burning furnace 1 1 3 : Fuel cell 1 2 1 : orifice plate 1 2 2 : flow hole 123 : flame 124 : coil spring 125 : perforated plate 126 : hole # 127 : flow hole - 73-