201221868 六、發明說明： 〔相關申請案〕 本申請案係依據日本專利申請案第2010-202294號， 主張優先權。 【發明所屬之技術領域】 本發明係關於一種使通過收容有蓄熱材的蓄熱部而 導入燃燒用空氣供給部的燃燒用空氣從空氣喷出口喷出至 加熱爐内’並且使通過燃料供給部而導入的燃料從燃料喷 出口喷出至加熱爐内，以使燃料在加熱爐内燃燒之蓄熱式 燃燒裂置及使用此種蓄熱式燃燒裝置的加熱爐。特別是在 上述蓄熱式燃燒裝置中具有下列特徵：如上述方式使燃料 在加熱爐内燃燒時，即便在設有上述空氣喷出口或燃料噴 出口之加熱爐的内壁附近，燃燒亦能適當地進行，並且於 燃燒之際能抑制NOx的產生。 【先前技術】 以往，使用一種蓄熱式燃燒裝置，其係在加熱爐中， 為了利用燃燒排出氣體的熱以進行有效率的燃燒，而在非 燃燒時使加熱爐内的燃燒排出氣體通過收容有蓄熱材的蓄 熱部而排出，使燃燒排出氣體的熱蓄熱於蓄熱材’另一方 面’於燃燒時使燃燒用空氣通過收容有如此般蓄熱之蓄熱 材的蓄熱部而予以加熱，使如此般地加熱的燃燒用空氣通 過燃燒用空氣供給部而由空氣噴出口朝加熱爐内噴出，以 使燃料燃燒。 在此，就蓄熱式燃燒裝置而言，係如曰本特開2002 4 323137 201221868 — 139217號公報所示，利用下列構成者：將通過蓄熱有燃 燒排出氣體的熱之蓄熱部而被加熱的燃燒用空氣從空氣導 入部導入混合室，同時通過燃料供給喷嘴將燃料引導至上 述混合室’在該混合室中使上述加熱後的燃燒用空氣與燃 料混合’然後將其從混合室引導至爐側的燃燒室而加以燃 燒。 又’如日本專利第3〇319〇8號公報及日本專利第 3557028號公報所示’利用下列構成:在將蓄熱有燃燒排出 氣體的熱之蓄熱部中加熱後的燃燒用空氣予以導入的燃燒 用空氣供給部中’從一次燃料喷嘴供給一次燃料以使其進 行一次燃燒（primary combustion)，同時在使燃燒用空氣 從上述燃燒用空氣供給部喷出至加熱爐内的空氣喷出口的 周邊’設置使二次燃料喷出至加熱爐内的二次燃料喷出 口，以使二次燃料由此二次燃料喷出口噴出至加熱爐内， 並使此二次燃料在加熱爐内進行二次燃燒（sec〇ndary combustion) ° 然而’如日本特開2002— 139217號公報所示，使混 合有加熱後的燃燒用空氣與燃料的混合氣體於燃燒室燃燒 時，會有燃燒室的燃燒溫度變高且ΝΟχ的產.生變多之問 題。 再者，如日本專利第3031908號公報及日本專利第 3557028號公報所示，於將一次燃料由一次燃料喷嘴供給 至導入加熱後的燃燒用空氣之燃燒用空氣供給部以進行_ 次燃燒，並使一次燃燒後的燃燒用空氣從燃燒用空氣供給 323137 5 201221868 部通過空氣噴出口喷出至加熱爐内，同時使二次燃料從設 置於°亥a氣噴出口周邊的二次燃料喷出口噴出至加熱爐 内以使〜次燃料在加熱爐内進行二次燃燒時，從二次燃 料喷出口嘴出至加熱爐内的二次燃料會立刻與從上述空氣 喷出口嘴出的燃燒用空氣接觸而燃燒，使得此部分的燃燒 ’ Ν〇χ的產生依然變多。 因 llf， _ 以往曾提案將上述二次燃料喷出口設置在偏離 =空氣噴出口的位置，或提高從空氣喷出σ朝加熱爐内 ·.、、:繞用空氣的流速，以使燃燒用空氣與二次燃料在 偏離空乳噴出口、二次燃料喷出口的位置緩緩地接觸而燃 燒，而可抑制Ν〇χ的產生。 然而，如此使燃燒用空氣與二次燃料在偏離空氣噴出 口或二次燃料噴出口的位置緩緩地接觸而燃燒時，會有設 有空氣嘴出口或二次燃料噴出口的内壁附近之加熱爐内的 溫度未充分上昇，且於加熱爐内產生溫度不均，而無法適 當地對被處理物進行加熱處理之問題。此外，在以上述方 式構成之情況下’會有二次燃料未充分燃燒，剩餘的二次 燃料與燃燒排出氣體一起被導入另一蓄熱式燃燒裝置的蓄 熱部，而導致燃燒效率降低的問題，或有在已導入有二次 燃料的蓄熱式燃燒裝置的蓄熱部中進行燃燒，而使該蓄熱 部的蓄熱材過熱等的問題。 【發明内容】 〔發明所欲解決之課題〕 本發明之課題在於解決上述之課題，亦即使通過收容 323137 6 201221868 有蓄熱材的蓄熱部而導入燃燒用空氣供給部的蜓燒用空氣 從空氣喷出口噴出至加熱爐内，同時使通過燃料供給部而 導入的燃料從燃料噴出口喷出至加熱爐内，以使燃料在加 熱爐内燃燒之蓄熱式燃燒裝置及使用此種蓄熱式燃燒裝置 之加熱爐中之課題。 亦即，本發明欲解決之課題為，在上述蓄熱式燃燒裝 置中使燃料於加熱爐内燃燒時，於燃燒之際抑制NOX產 生，並且在設有空氣噴出口或燃料喷出口之加熱爐的内壁 附近亦能適當地進行燃燒，加熱爐的内壁附近的溫度亦充 =地上昇，以防止加熱爐内產生溫度不均，使被處理物適 當地進行加熱處理。再者，在燃料未充分燃燒的狀態下， 抑制與燃燒排出氣體—起被導人另—蓄熱式燃燒裝置的蓄 熱部，以防止燃燒效率降低，防止另-蓄熱式燃燒裝置 中收容於蓄熱部的蓄熱材過熱。 裝置 〔用以解決課題之手段〕 為了解決上述課題，本發明的蓄熱式燃燒裝置係使通 過收谷有ϊ熱材的蓄熱部而導人影纟肖空氣供給部的燃燒 用空氣從空氣喷出口喷出至加熱爐内，同時使通過燃料供 給部而導入的燃料從燃料噴出口喷出至加熱爐内，以使燃 料在加熱爐内燃燒之蓄熱式燃燒装置，其中，將上述之空 氣喷出口與燃料喷出口隔著既定間隔設置，並且於上述燃 燒用空氣供給部之空氣Μ σ的部分，对傾斜成朝加熱 爐内呈錐狀擴展的傾斜部。 在此，本發明的蓄熱式燃燒裝置中，宜將傾斜成朝加 7 323137 201221868 熱爐呈錐狀擴展之上述傾斜部的傾斜角0設在丨。 主 3.5。 的範圍。 又，本發明的蓄熱式燃燒裝置中，上述埏堍用办々 給部呈錐狀擴展前之部分的直徑D a、及呈錐狀擴氣供 斜部中之從傾斜起始位置至空氣喷出口的直線最短距# X ’係以滿足0.5S X/DaS2.0的條件為佳。 離 本發明的蓄熱式燃燒裝置中，上述燃燒用空氣供鉍立 呈錐狀擴展前之部分的直徑Da、及上述空氣嘴出 的中& 與燃料喷出口的中心之間的間隔L係以滿足〇 2s < ^201221868 VI. Description of the Invention: [Related Application] This application claims priority based on Japanese Patent Application No. 2010-202294. [Technical Field] The present invention relates to a method in which combustion air introduced into a combustion air supply unit through a heat storage unit in which a heat storage material is accommodated is discharged from an air discharge port into a heating furnace, and a fuel supply unit is passed through The introduced fuel is ejected from the fuel discharge port into the heating furnace to cause the regenerative combustion cracking of the fuel to be burned in the heating furnace and the heating furnace using the regenerative combustion apparatus. In particular, in the above-described regenerative combustion apparatus, when the fuel is burned in the heating furnace as described above, the combustion can be appropriately performed even in the vicinity of the inner wall of the heating furnace provided with the air discharge port or the fuel discharge port. And can suppress the generation of NOx during combustion. [Prior Art] Conventionally, a regenerative combustion apparatus has been used which is used in a heating furnace to perform efficient combustion by utilizing heat of combustion exhaust gas, and to contain combustion exhaust gas in the heating furnace during non-combustion. The heat storage unit of the heat storage material is discharged, and the heat of the combustion exhaust gas is stored in the heat storage material. On the other hand, the combustion air is heated by the heat storage unit that stores the heat storage material such that the heat storage material is stored. The heated combustion air is discharged into the heating furnace through the combustion air supply unit through the combustion air supply unit to burn the fuel. In the regenerative combustion apparatus, as shown in the Japanese Patent Publication No. 2002 4 323137, 201221868 to 139217, the following configuration is employed: a combustion that is heated by a heat storage unit that stores heat of combustion exhaust gas. Air is introduced into the mixing chamber from the air introduction portion while guiding the fuel to the mixing chamber through the fuel supply nozzle 'mixing the heated combustion air with the fuel in the mixing chamber' and then guiding it from the mixing chamber to the furnace side The combustion chamber is burned. In the following description, the combustion of the combustion air heated in the heat storage unit that stores the heat of the combustion exhaust gas is introduced as described in Japanese Patent No. 3,319,8, and Japanese Patent No. 3,570,028. In the air supply unit, 'primary fuel is supplied from the primary fuel nozzle to perform primary combustion, and the combustion air is discharged from the combustion air supply unit to the periphery of the air discharge port in the heating furnace' Providing a secondary fuel injection port for discharging secondary fuel into the heating furnace, so that the secondary fuel is discharged into the heating furnace from the secondary fuel injection port, and the secondary fuel is subjected to secondary combustion in the heating furnace (sec〇ndary combustion) ° However, as shown in Japanese Laid-Open Patent Publication No. 2002-139217, when a mixed gas of heated combustion air and fuel is mixed in a combustion chamber, the combustion temperature of the combustion chamber becomes high. And the production of cockroaches. Further, as shown in Japanese Patent No. 3031908 and Japanese Patent No. 3557028, a primary fuel is supplied from a primary fuel nozzle to a combustion air supply unit that introduces heated combustion air to perform _-time combustion. The combustion air after the primary combustion is discharged from the combustion air supply 323137 5 201221868 through the air discharge port into the heating furnace, and the secondary fuel is ejected from the secondary fuel injection port provided around the gas outlet of the sea. When the secondary fuel is subjected to secondary combustion in the heating furnace, the secondary fuel discharged from the secondary fuel injection nozzle to the heating furnace immediately contacts the combustion air discharged from the air outlet nozzle. And the burning, so that the combustion of this part of the 'Ν〇χ is still more. Llf, _ In the past, it has been proposed to set the secondary fuel discharge port at a position offset from the air discharge port, or to increase the flow rate from the air to the inside of the heating furnace. The air and the secondary fuel are slowly contacted and burned at a position deviating from the empty emulsion discharge port and the secondary fuel injection port, and generation of cockroaches can be suppressed. However, when the combustion air and the secondary fuel are slowly brought into contact with each other at a position deviating from the air discharge port or the secondary fuel injection port, there is a heating near the inner wall provided with the air nozzle outlet or the secondary fuel injection port. The temperature in the furnace does not rise sufficiently, and temperature unevenness occurs in the heating furnace, and the problem of heat treatment of the workpiece is not properly performed. Further, in the case of the above configuration, the secondary fuel is not sufficiently burned, and the remaining secondary fuel is introduced into the heat storage portion of the other regenerative combustion device together with the combustion exhaust gas, resulting in a problem of lowering the combustion efficiency. There is a problem that combustion occurs in the heat storage unit of the regenerative combustion apparatus to which the secondary fuel has been introduced, and the heat storage material of the heat storage unit is overheated. [Problems to be Solved by the Invention] The object of the present invention is to solve the above-mentioned problems, and to squirt the air for blowing into the combustion air supply unit from the air by the heat storage unit having the heat storage material in 323137 6 201221868. A regenerative combustion apparatus that ejects the outlet into the heating furnace while discharging the fuel introduced through the fuel supply unit from the fuel discharge port into the heating furnace to burn the fuel in the heating furnace and using the regenerative combustion apparatus The problem in the heating furnace. In other words, in the above-described regenerative combustion apparatus, when the fuel is burned in the heating furnace, the NOX generation is suppressed at the time of combustion, and the furnace is provided with an air outlet or a fuel discharge port. The combustion can be appropriately performed in the vicinity of the inner wall, and the temperature in the vicinity of the inner wall of the heating furnace is also raised to prevent temperature unevenness in the heating furnace, and the object to be treated is appropriately heated. Further, in a state where the fuel is not sufficiently burned, the heat accumulating portion of the guided regenerative combustion device is prevented from being combusted with the combustion exhaust gas, thereby preventing the combustion efficiency from being lowered, and preventing the regenerative combustion device from being housed in the heat accumulating portion. The heat storage material is overheated. In order to solve the above-described problems, the regenerative combustion apparatus of the present invention causes the combustion air that has been exposed to the air supply unit to be blown from the air discharge port by the heat accumulating portion that has the hot material in the valley. a regenerative combustion device that discharges fuel introduced into the heating furnace and simultaneously introduces fuel introduced through the fuel supply portion from the fuel discharge port into the heating furnace to burn the fuel in the heating furnace, wherein the above-mentioned air discharge port is The fuel discharge port is provided at a predetermined interval, and the portion of the air Μ σ of the combustion air supply unit is inclined so as to be inclined toward the inside of the heating furnace. Here, in the regenerative combustion apparatus of the present invention, it is preferable to set the inclination angle 0 of the inclined portion which is inclined so as to be tapered in the heat furnace of 7 323137 201221868. Main 3.5. The scope. Further, in the regenerative combustion apparatus according to the present invention, the diameter D a of the portion before the taper expansion portion is tapered, and the inclination start position to the air jet in the tapered air supply and supply inclined portion The straight line shortest distance # X ' of the exit is better than the condition of 0.5SX/DaS2.0. In the regenerative combustion apparatus according to the present invention, the combustion air is supplied with a diameter Da of a portion before the taper expands, and an interval L between the middle of the air nozzle and the center of the fuel discharge port. Meet 〇2s < ^
t)a/T $0.30的條件為佳。 再者，本發明的蓄熱式燃燒裝置中，於使燃料 爐内喷出之燃料喷出口的部分，亦可設置傾斜成朝加加熱 内呈錐狀擴展的傾斜部。 〇熱爐 本發明的加熱爐係作成使用如上所述之蓄熱 裝置。 “、、式燃繞 〔發明的功效〕 本發明的蓄熱式燃燒裝置中，由於係使空氣噴出口與 燃料噴出口隔著既定間隔設置，並且於燃燒用空氣供給部 之二氣喷出口的部分，設有傾斜成朝加熱爐内呈錐狀擴展 的傾斜部’所以使通過收容有蓄熱材的f熱部而導入燃燒 用空氣供給部的燃燒用线從空氣喷出口喷出至加献爐 内，同時使通過燃料供給部而導入的燃料從燃料喷出口喷 ”爐内，以使燃料在加熱爐内燃燒之際，由空氣喷 出口噴出的燃燒用空氣會沿著傾斜成呈錐狀擴展的傾斜部 323137 201221868 而朝加熱爐内擴散地喷出。 而且，以此方式擴散地喷出的燃燒用空氣，會與由上 述燃料喷出口喷出的燃料快速地接觸而燃燒，即便在設有 空氣喷出口或燃料喷出口之加熱爐的内壁附近亦能適當地 進行燃燒，且此部分的溫度亦會上昇。 結果，在使用此種蓄熱式燃燒裝置的加熱爐中，防止 加熱爐内產生溫度不均，被處理物可適當地進行加熱處 理，並且防止燃料在未充分燃燒的狀態下與燃燒排出氣體 一起被導入另一蓄熱式燃燒裝置的蓄熱部，且防止燃燒效 率降低，或收容於另一蓄熱式燃燒裝置的蓄熱部中的蓄熱 材過熱。 又，如上所述，從空氣喷出口喷出的燃燒用空氣會沿 著傾斜成呈錐狀擴展的傾斜部而朝加熱爐内擴散地喷出， 因此擴散喷出的燃燒用空氣會與加熱爐内的燃燒排出氣體 混合，該燃燒用空氣中的氧濃度會降低。並且，如此般氧 濃度降低的燃燒用空氣會擴大成廣角，而與從燃料喷出口 喷出的燃料在靠近加熱爐内壁的位置接觸並進行燃燒，以 防止燃燒時的燃燒溫度急遽上昇，且抑制NOx產生。 ^ 此本發明的加熱爐中，由於在空氣噴出口的部分 設有傾斜成朝加熱爐内呈錐狀擴展的傾斜部，故即便是在 ::::内壁附近亦能進行燃燒，甚至加熱爐内的角落， 又白月匕均句地上昇，且N0x的產生亦受到抑制。 【實施方式j 、下依據圖式，具體說明本發明實施形態之蓄熱式 323137 9 201221868 燃燒裝置及使用該蓄熱式燃燒裝置之加熱爐。此外，本發 明之蓄熱式燃燒裝置及加熱爐不限定於下述實施形態所示 者，在未改變發明要旨的範圍内，可適當加以變更來實 施。 本實施形態中，如第1圖所示，將成對的蓄熱式燃燒 裝置10設成朝加熱爐1的内部相對向。 此處，在上述蓄熱式燃燒裝置10中進行燃燒時，是 將燃燒用空氣引導至收容有蓄熱材11的蓄熱部12，在該 蓄熱部12中將上述燃燒用空氣予以加熱。然後，使以此方 式經加熱後的燃燒用空氣從蓄熱部12通過燃燒用空氣供 給部13而自設置於其前端的空氣喷出口 14朝加熱爐1内 喷出，同時使通過氣體供給管（燃料供給部）15而導入的 燃料從燃料喷出口 16朝加熱爐1内喷出，使以此方式喷出 之燃料與自上述空氣喷出口 14喷出之燃燒用空氣在加熱 爐1内接觸而燃燒。 另一方面，在未進行燃燒的蓄熱式燃燒裝置10中， 使燃料通過氣體供給管15導入燃料喷出口 16的動作停止 而不進行燃燒，同時經由上述蓄熱部12抽吸加熱爐1内的 燃燒排出氣體，使該燃燒排出氣體的熱蓄熱於該蓄熱部12 所收容的蓄熱材11，然後使該燃燒排出氣體排出。 接著，在此實施形態的蓄熱式燃燒裝置10中，如第1 圖及第2圖所示，將空氣喷出口 14與燃料喷出口 16隔著 所期望的間隔設置，並且在上述燃燒用空氣供給部13之空 氣喷出口 14的部分，設有傾斜成朝向加熱爐1呈錐狀擴展 10 323137 201221868 的傾斜部13a。 如上方式，若在燃燒用空氣供給部13的空氣噴出口 14部分設置傾斜成朝加熱爐i呈錐狀擴展的傾斜部= 則由空氣喷出口 14喷出的燃燒用空氣便會沿著傾斜成 加熱爐1呈錐狀擴展的傾斜部13a而往加熱爐1内擴散^ 噴出。 如此般地擴散而喷出的燃燒用空氣會與加熱爐ι〇内 的燃燒排出氣體混合，且該燃燒用空氣中的氧濃度會降 低，並且如第2圖所示’氧濃度降低的燃燒用空氣會擴散 成廣角並與由上述燃料嘴出σ 16噴出的燃料在靠近加執 爐i内壁la的交點位置卩接觸並進行燃燒。例如，如第3 圖所示，在使燃燒用空氣從未設有傾斜部的直線狀之空氣 喷出口 14’直線喷出的情況下，與該燃燒用空氣和從燃料 喷出口 16’喷出的燃料相接觸的交點位置p，相比較，上述 的交點位置P較靠近加熱爐丨的内壁la，使得在設有空氣 喷出口 14、燃料喷出口 16的加熱爐丨的内壁附近，也 能適當地進行燃燒。 因此，即便疋在加熱爐1的内壁la附近，溫度亦能適 當上昇，可防止在加熱爐1内產生溫度不均，被處理物（未 圖示）能適當地進行加熱處理。再者，上述燃料得以在加 熱爐1内充分地燃燒，可防止燃料在未充分燃燒的狀態下 與燃燒排出氣體一起被導向另一蓄熱式燃燒裝置1〇的蓄 熱部12，可防止燃燒效率降低、或收容於另一蓄熱式燃燒 裝置ίο中之蓄熱部12的蓄熱材η過熱。 11 323137 201221868 又，如上所述，當自空氣喷出口 14喷出的燃燒用空 氣沿著傾斜成呈錐狀擴展的傾斜部13a而以往加熱爐1内 擴展的方式喷出時，所喷出的燃燒用空氣會與加熱爐1内 的燃燒排出氣體迅速地混合，而使該燃燒用空氣中的氧濃 度降低。亦即，如第4圖所示，隨著空氣喷出口 14之傾斜 部13a的傾斜角0變大，燃燒用空氣與燃料接觸之上述交 點位置P的燃燒用空氣中的氧濃度會降低，如此，氧濃度 降低的燃燒用空氣與自燃料喷出口 16喷出的燃料接觸而 進行燃燒。 而且，由於燃燒是藉由如上述般氧濃度降低的燃燒用 空氣進行，所以每單位體積的反應熱會變少，儘管如上所 述般燃料會在加熱爐1的内壁la附近與燃燒用空氣接觸而 被燃燒，亦能防止燃燒時之燃燒溫度急劇上昇，且抑制 NOx的產生。 此處，於燃燒用空氣供給部13的空氣喷出口 14的部 分設置傾斜成朝加熱爐1呈錐狀擴展的傾斜部13a時，若 該傾斜角Θ變小，則由空氣喷出口 14喷出至加熱爐1内之 燃燒用空氣的擴散會變少，因而難以充分地獲得上述効 果。另一方面，在該傾斜角0過大時，燃燒用空氣會由傾 斜部13a剝離而產生渦流等，使得燃燒用空氣不會沿著傾 斜部13a被適當地引導至空氣喷出口 14,由空氣喷出口 14 喷出至加熱爐1内之燃燒用空氣的擴散會變差，因而難以 充分地獲得上述効果。因此，宜將上述傾斜部13a的傾斜 角Θ設在Γ至3.5°的範圍。 12 323137 201221868 如上所述，當设有以呈錐狀擴展的方式傾斜的傾 斜邓13a時若该傾斜部13a的長度變短則燃燒用空氣 著傾斜13a被弓丨導至空氣喷出口 14的長度會變短，由 空氣喷出π 14噴出的織用空氣便不會在適當地擴散的 狀態下噴出。另一方面，於將傾斜部13a的長度變長的情 况時燃H氣會容易從傾斜部…剝離，並且裝置會 大型呈錐狀擴展前的部分之誠用空氣供給部 ::二二ϋ:ψ與從呈錐狀擴展之傾斜部13a W傾斜起始 γ Μ 口 14的直線最短距離X，係以滿足〇·5$ X/DaS2.0的條件為佳。 再者’如上所述，脾办友 令二軋嘴出口 14與燃料喷出口 16 隔者既定間隔設置時，芒为* ▲ 工乳噴出口 14與燃料喷出口 16 的間隔太小，則由空惫哈φ 、叉出口 14喷出的燃燒用空氣便會在 未充分擴散的狀態下與由揪 穴田；然枓噴出口 16喷出的燃料接 觸，且在燃燒用空氣中的备、渔 見τ的氧濃度因與燃燒排出氣體的混合 而不會適當地降低的狀離 狀〜'下進行燃燒，進而導致燃燒溫度 上昇而容易產生Ν〇χ。另一 士工 . 乃方面’若空氣喷出口 14與燃 料喷出口 16的間隔太大，則由從空氣喷出口 Η噴出的姆 燒用空氣與由燃料喷出σ 16嘴出的燃料便不會適當地接 觸，而在從加熱爐1的内壁位置進行燃燒，致使 在加熱爐1喊生溫度叫，缝料在未充㈣燒的狀態 下與燃燒排出氣體一起被引道ε 口 ^ ^ t, 做引導至另一蓄熱式燃燒裝置1〇 的畜熱部12。因此，辦爐用办t ·、、、麂用二氣供給部13呈錐狀擴展前 之部分的直徑Da、與上沭办名,丄 疋二虱嘴出口 14的中心和燃料喷 323137 13 201221868 出口 16的中心之間的間隔L係以滿足0.25SDa/LS0.30 的條件為佳。 此外，此實施形態的蓄熱式燃燒裝置10中，雖未顯 示使燃燒用空氣進行一次燃燒的例子，惟可在上述燃燒用 空氣供給部13設置供給一次燃料的一次燃料供給管（未圖 示）與導燃器（未圖示），並使通過此燃燒用空氣供給部 13而導入的燃燒用空氣進行一次燃燒。 又，如第5圖所示，亦可與上述空氣喷出口 14同樣 地在上述燃料喷出口 16的部分設置傾斜成朝加熱爐1内呈 錐狀擴展的傾斜部16a。並且，如上所述，一旦在燃料喷 出口 16的部分亦設置傾斜成朝加熱爐1内呈錐狀擴展的傾 斜部16a，則由該燃料喷出口 16喷出的燃料便會沿著上述 傾斜部16a而朝加熱爐1内擴散地喷出，如上所述，與沿 著傾斜部13a從空氣喷出口 14朝加熱爐1内擴散地喷出的 燃燒用空氣相接觸的交點位置P會更靠近加熱爐1的内壁 la，而在更靠近加熱爐1的内壁la的位置適當地進行燃燒。 【圖式簡單說明】 第1圖係使用本發明之一實施形態之蓄熱式燃燒裝置 的加熱爐之部分說明圖。 第2圖係表示在上述實施形態的蓄熱式燃燒裝置中， 於空氣喷出口的部分設有傾斜成朝加熱爐呈錐狀擴展的傾 斜部之狀態的概略說明圖。 第3圖係空氣喷出口的部分變成直線狀，未設有傾斜 成朝加熱爐呈錐狀擴展的傾斜部之參考例的蓄熱式燃燒裝 14 323137 201221868 置之概略說明圖。 第4圖係表示空氣喷出口之傾斜部的傾斜角0、與在 燃燒用二氧和燃料接觸的交點位置P之燃燒用空氣中的氧 濃度之關係的圖。 第5圖係表示在上述實施形態的蓄熱式燃燒裝置中， 於使燃料朝加熱爐内喷出之燃料噴出D的部分亦設有傾斜 成朝加熱爐内呈錐狀擴展的傾斜部之概略說明圖。 【主要元件符號說明】 1 加熱爐 la 内壁 10 蓄熱式燃燒裝置 11 蓄熱材 12 蓄熱部 13 燃燒用空氣供給部 13a 傾斜部 14、14，空氣噴出口 15 氣體供給管（燃料供給部） 16、16，燃料噴出口 16a 傾斜部t) The condition of a/T $0.30 is better. Further, in the regenerative combustion apparatus of the present invention, the portion of the fuel discharge port that is ejected in the fuel furnace may be provided with an inclined portion that is inclined to expand in a tapered shape in the heating. The heating furnace of the present invention is constructed using the heat storage device as described above. In the regenerative combustion apparatus of the present invention, the air discharge port and the fuel injection port are disposed at a predetermined interval, and the portion of the two air outlets of the combustion air supply unit is provided. The inclined portion that is inclined to expand in a tapered shape in the heating furnace is provided. Therefore, the combustion line that is introduced into the combustion air supply unit through the heat portion that contains the heat storage material is ejected from the air ejection port into the furnace. At the same time, the fuel introduced through the fuel supply unit is sprayed from the fuel injection port into the furnace, so that the combustion air ejected from the air ejection port expands in a tapered shape as the fuel is burned in the heating furnace. The inclined portion 323137 201221868 is ejected and diffused into the heating furnace. Further, the combustion air which is diffused and discharged in this manner is quickly brought into contact with the fuel ejected from the fuel injection port, and is combusted even in the vicinity of the inner wall of the heating furnace provided with the air ejection port or the fuel ejection port. The combustion is carried out properly and the temperature of this part also rises. As a result, in the heating furnace using such a regenerative combustion apparatus, temperature unevenness is prevented from occurring in the heating furnace, and the object to be treated can be appropriately subjected to heat treatment, and the fuel is prevented from being burned together with the combustion exhaust gas in an insufficiently combusted state. The heat storage unit of the other regenerative combustion apparatus is introduced, and the combustion efficiency is prevented from being lowered, or the heat storage material accommodated in the heat storage unit of the other regenerative combustion apparatus is overheated. Further, as described above, the combustion air that is ejected from the air ejection port is diffused into the heating furnace along the inclined portion that is inclined to expand in a tapered shape, so that the combustion air that is diffused and discharged is heated and heated. The combustion exhaust gas in the mixture is mixed, and the oxygen concentration in the combustion air is lowered. Further, the combustion air having a reduced oxygen concentration is expanded to a wide angle, and the fuel discharged from the fuel injection port is brought into contact with the inner wall of the heating furnace to be burned to prevent the combustion temperature during combustion from rising sharply and suppressing. NOx is produced. ^ In the heating furnace of the present invention, since the inclined portion which is inclined to expand in the heating furnace is provided in the portion of the air ejection port, the combustion can be performed even in the vicinity of the inner wall of the :::: even the heating furnace Within the corners, the white moon squats and the production of N0x is also suppressed. [Embodiment j] Hereinafter, a regenerative type 323137 9 201221868 combustion apparatus and a heating furnace using the regenerative combustion apparatus according to an embodiment of the present invention will be specifically described. In addition, the regenerative combustion apparatus and the heating furnace of the present invention are not limited to those shown in the following embodiments, and may be appropriately modified without departing from the scope of the invention. In the present embodiment, as shown in Fig. 1, the pair of regenerative combustion apparatuses 10 are disposed to face the inside of the heating furnace 1. When the combustion is performed in the regenerative combustion apparatus 10, the combustion air is guided to the heat storage unit 12 in which the heat storage material 11 is accommodated, and the combustion air is heated in the heat storage unit 12. Then, the combustion air heated in this manner is ejected from the heat accumulating portion 12 through the combustion air supply portion 13 from the air ejection port 14 provided at the tip end thereof to the inside of the heating furnace 1 while passing through the gas supply pipe ( The fuel introduced into the fuel supply unit 15 is discharged from the fuel discharge port 16 into the heating furnace 1, and the fuel discharged in this manner is brought into contact with the combustion air discharged from the air discharge port 14 in the heating furnace 1. combustion. On the other hand, in the regenerative combustion apparatus 10 that does not perform combustion, the operation of introducing the fuel into the fuel discharge port 16 through the gas supply pipe 15 is stopped without burning, and the combustion in the heating furnace 1 is sucked through the heat storage unit 12 The gas is exhausted, and the heat of the combustion exhaust gas is stored in the heat storage material 11 accommodated in the heat storage unit 12, and then the combustion exhaust gas is discharged. Next, in the regenerative combustion apparatus 10 of the embodiment, as shown in FIG. 1 and FIG. 2, the air discharge port 14 and the fuel discharge port 16 are provided at a desired interval, and the combustion air supply is performed. The portion of the air ejection port 14 of the portion 13 is provided with an inclined portion 13a which is inclined to extend in a tapered shape toward the heating furnace 10 by 10 323137 201221868. As described above, when the inclined portion of the air discharge port 14 of the combustion air supply unit 13 is inclined to expand toward the heating furnace i, the combustion air discharged from the air discharge port 14 is inclined. The heating furnace 1 is diffused and spread out in the heating furnace 1 in a tapered portion 13a. The combustion air that is thus diffused and discharged is mixed with the combustion exhaust gas in the heating furnace, and the oxygen concentration in the combustion air is lowered, and as shown in Fig. 2, the combustion with reduced oxygen concentration is used. The air is diffused into a wide angle and is in contact with and burned by the fuel ejected from the above-described fuel nozzle σ 16 at the intersection of the inner wall la of the furnace i. For example, as shown in Fig. 3, when the combustion air is linearly discharged from the linear air ejection port 14' having the inclined portion, the combustion air and the fuel ejection port 16' are ejected. The intersection position P of the fuel phase contact is relatively close to the inner wall 1a of the heating furnace so that the vicinity of the inner wall of the heating furnace provided with the air discharge port 14 and the fuel discharge port 16 can be appropriately The ground is burning. Therefore, even if it is near the inner wall la of the heating furnace 1, the temperature can be appropriately raised, and temperature unevenness can be prevented from occurring in the heating furnace 1, and the object to be treated (not shown) can be appropriately heated. Further, the fuel can be sufficiently burned in the heating furnace 1, and the fuel can be prevented from being guided to the heat accumulating portion 12 of the other regenerative combustion apparatus 1 together with the combustion exhaust gas in a state of insufficient combustion, thereby preventing the combustion efficiency from being lowered. The heat storage material η of the heat accumulating portion 12 accommodated in the other regenerative combustion device ίο is overheated. In addition, as described above, when the combustion air ejected from the air ejection port 14 is ejected along the inclined portion 13a that is inclined in a tapered shape and is ejected in the conventional heating furnace 1, the ejected air is ejected. The combustion air is rapidly mixed with the combustion exhaust gas in the heating furnace 1, and the oxygen concentration in the combustion air is lowered. That is, as shown in Fig. 4, as the inclination angle 0 of the inclined portion 13a of the air ejection port 14 becomes larger, the oxygen concentration in the combustion air at the intersection point P where the combustion air is in contact with the fuel is lowered, The combustion air having a reduced oxygen concentration comes into contact with the fuel discharged from the fuel discharge port 16 to be combusted. Further, since the combustion is performed by the combustion air having a reduced oxygen concentration as described above, the heat of reaction per unit volume is reduced, although the fuel is in contact with the combustion air in the vicinity of the inner wall 1a of the heating furnace 1 as described above. When it is burned, it can prevent the combustion temperature from rising sharply during combustion and suppress the generation of NOx. When the inclined portion 13a that is inclined to expand toward the heating furnace 1 is provided in a portion of the air outlet 14 of the combustion air supply unit 13, when the inclination angle Θ is small, the air discharge port 14 is ejected. The diffusion of the combustion air into the heating furnace 1 is reduced, so that it is difficult to sufficiently obtain the above effects. On the other hand, when the inclination angle 0 is excessively large, the combustion air is peeled off by the inclined portion 13a to generate a vortex or the like, so that the combustion air is not appropriately guided to the air ejection port 14 along the inclined portion 13a, and is sprayed by the air. The diffusion of the combustion air discharged into the heating furnace 1 by the outlet 14 is deteriorated, so that it is difficult to sufficiently obtain the above effects. Therefore, it is preferable to set the inclination angle of the inclined portion 13a to a range of Γ to 3.5°. 12 323137 201221868 As described above, when the inclined Deng 13a inclined in a tapered manner is provided, if the length of the inclined portion 13a becomes shorter, the combustion air inclined 13a is guided to the length of the air ejection port 14. It will become shorter, and the weaving air sprayed by the air jet π 14 will not be ejected in a state of being properly diffused. On the other hand, when the length of the inclined portion 13a is lengthened, the H gas will be easily peeled off from the inclined portion, and the device will have a large portion of the air supply portion before the expansion of the taper shape: 2:2: It is preferable that the 最 and the straight line shortest distance X from the inclined portion 13a W which is tapered to extend the γ port 14 are satisfied to satisfy the condition of 〇·5$ X/DaS2.0. Furthermore, as described above, when the spleen friend makes the second nozzle outlet 14 and the fuel discharge port 16 are spaced apart from each other, the awn is * ▲ the interval between the squirt outlet 14 and the fuel ejector 16 is too small, and The combustion air ejected from the hip hop φ and the fork outlet 14 is in contact with the fuel ejected from the acupoint field; the squirting port 16 is not sufficiently diffused, and is prepared in the combustion air. The oxygen concentration is burned by the mixing of the combustion exhaust gas without being appropriately lowered, and the combustion temperature is increased to cause enthalpy. In another aspect, if the distance between the air outlet 14 and the fuel discharge port 16 is too large, the fuel blown from the air outlet port and the fuel discharged from the fuel σ 16 will not Properly contacting, and burning from the inner wall position of the heating furnace 1, causing the temperature in the heating furnace 1 to be called, and the sewing material is led to the ε port together with the combustion exhaust gas in the unfilled (four) burning state. The heat generating portion 12 guided to the other regenerative combustion device 1 is made. Therefore, the diameter Da of the portion before the taper expansion of the second gas supply unit 13 for the furnace, and the name of the upper sputum, the center of the sputum outlet 14 and the fuel spray 323137 13 201221868 The interval L between the centers of the outlets 16 is preferably such that the condition of 0.25 SDa/LS 0.30 is satisfied. Further, in the regenerative combustion apparatus 10 of the embodiment, although the combustion air is not subjected to primary combustion, the primary combustion fuel supply unit 13 may be provided with a primary fuel supply pipe (not shown) for supplying primary fuel. The combustion air introduced through the combustion air supply unit 13 is once combusted with a pilot burner (not shown). Further, as shown in Fig. 5, an inclined portion 16a which is inclined to extend in a tapered shape in the heating furnace 1 may be provided in a portion of the fuel discharge port 16 in the same manner as the air discharge port 14. Further, as described above, when the inclined portion 16a which is inclined to expand in the heating furnace 1 is provided in the portion of the fuel discharge port 16, the fuel discharged from the fuel discharge port 16 is along the inclined portion. 16a is diffused and sprayed into the heating furnace 1, and as described above, the intersection P of the contact with the combustion air which is diffused from the air discharge port 14 into the heating furnace 1 along the inclined portion 13a is closer to the heating. The inner wall 1a of the furnace 1 is appropriately burned at a position closer to the inner wall 1a of the heating furnace 1. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial explanatory view showing a heating furnace using a regenerative combustion apparatus according to an embodiment of the present invention. In the regenerative combustion apparatus of the above-described embodiment, a schematic view of a state in which the inclined portion is inclined toward the heating furnace in a tapered shape is provided in the portion of the air discharge port. In the third embodiment, the portion of the air ejection port is linear, and the regenerative combustion device 14 323137 201221868, which is a reference example of the inclined portion that is tapered toward the heating furnace, is not provided. Fig. 4 is a view showing the relationship between the inclination angle 0 of the inclined portion of the air ejection port and the oxygen concentration in the combustion air at the intersection P of the combustion dioxide and the fuel. In the regenerative combustion apparatus of the above-described embodiment, a portion in which the fuel is discharged into the heating furnace D is also provided with an inclined portion that is inclined to expand in a tapered shape in the heating furnace. Figure. [Description of main components] 1 Heating furnace 1 Inner wall 10 Regenerative combustion apparatus 11 Heat accumulating material 12 Heat accumulating part 13 Combustion air supply part 13a Inclined parts 14, 14 and air discharge port 15 Gas supply pipe (fuel supply part) 16 and 16 , fuel injection port 16a inclined portion
Da L P、P， X Θ 空氣供給部呈錐狀擴展前之部分的直徑 噴料如叫中心、之間的間隔 喷二喷:交之=空氣與從燃輸口 傾处至空㈣出口的直線最短距離 323137Da LP, P, X Θ The diameter of the air supply part before the expansion of the cone is called the center, the interval between the two sprays: the intersection = air and the line from the fuel inlet to the air (four) outlet Shortest distance 323137