1379976 六、發明說明： _ 【發明所屬之技術領域】 本發明係關於一種蓄熱式燃燒器及使用該蓄熱式燃 ‘ 燒器之熱處理爐，其中，該蓄熱式燃燒器具有：使燃料從 燃料噴射喷嘴喷出以進行燃燒之燃燒器（burner)部；收 容有蓄熱材料之蓄熱室；及透過蓄熱室將燃燒用空氣從供 排氣口供給至熱處理爐内，並且將該熱處理爐内之燃燒排 氣從供排氣口透過蓄熱室進行排氣之供排氣路。特別是， 具有以下特徵：在藉由使用蓄熱式燃燒器之熱處理爐使鋁 · 等金屬熔融，或使被處理材進行加熱處理的情形下，且在 前述蓄熱式燃燒器之供排氣口的部分附著有由鋁等金屬或 被處理材發生之各種雜質等所構成之附著物的情形下，可 簡單地去除該附著物。 【先前技術】 近年來，在使鋁等金屬熔融，或使各種被處理材進行 加熱處理的熱處理爐中，為了有效地利用燃燒排氣之熱以 φ 謀求省能源化，如專利文獻1至4所示，使用蓄熱式燃燒 器，一般而言，該蓄熱式燃燒器係具有：使燃料從燃料喷 射喷嘴喷出以進行燃燒之燃燒器部；收容有蓄熱材料之蓄 熱室；及透過蓄熱室將燃燒用空氣從供排氣口供給至熱處 理爐内，並且將該熱處理爐内之燃燒排氣從供排氣口透過 蓄熱室進行排氣之供排氣路。 在此，在使用此種蓄熱式燃燒器之熱處理爐中，使用 前述一對蓄熱式燃燒器，在其中一個蓄熱式燃燒器中，將 4 322041 1379976 . 燃燒用空氣從供排氣路透過蓄熱室將將燃燒用空氣從供排 氣口導引至熱處理爐内，並且使燃料氣體從前述燃燒器部 中之燃料喷射喷嘴喷射以進行燃燒，另一方面，在另一個 蓄熱式燃燒器_，將熱處理爐内之燃燒排氣從供排氣口透 過供排氣路導引至收容有蓄熱材料之蓄熱室，並使燃燒排 氣之熱蓄熱在該蓄熱室之蓄熱材料後，透過上述供排氣路 使之排出，且在一對蓄熱式燃燒器中彼此地進行上述操作。 然而，在使銘等金屬溶融或使各種被處理材進行加熱 ® 處理之熱處理爐中，如上所述使熱處理爐内之燃燒排氣從 供排氣口透過供排氣路導引至收容有蓄熱材料之蓄熱室 時，會有以下問題：包含在燃燒排氣中之鋁等金屬或由被 處理材所產生之各種雜質等會附著在前述供排氣口之部分 而逐漸地蓄積，因而造成蓄熱式燃燒器中之燃燒能力逐漸 降低的問題。 因此，如上所述必須去除附著在供排氣口之部分的金 φ 屬等附著物，在習知技術中，係使前述蓄熱式燃燒器之燃 燒停止，使熱處理爐内之溫度充分地降低，作業員進入熱 處理爐内將附著在供排氣口之部分的附著物予以去除，或 分解前述蓄熱式燃燒器之配管等，以進行清掃等作業。 然而，以上述方式去除附著在供排氣口之部分的金屬 等附著物時，會有以下問題：欲使蓄熱式燃燒器之燃燒停 止並使熱處理爐内之溫度充分地降低時需要花費非常長之 時間，作業效率會變得非常差，而且欲再次進行燃燒並使 熱處理爐内之溫度充分地變高時亦需要花費較長之時間， 5 322041 1379976 而使生產性大幅降低的問題。 (先前技術文獻） (專利文獻1)曰本特開平7-113579號公報 (專利文獻2)日本特開平9-222223號公報 (專利文獻3)曰本特開2002-295812號公報 (專利文獻4)曰本特開2007-24335號公報 【發明内容】 (發明所欲解決之課題） 本發明之課題係在於解決：在使用蓄熱式燃燒器之熱 處理爐中，使鋁等金屬熔融或使被處理材進行加熱處理時 之上述各種問題，該蓄熱式燃燒器係具有：使燃料從燃料 喷射喷嘴喷出以進行燃燒之燃燒器部；收容有蓄熱材料之 蓄熱室；及透過蓄熱室將燃燒用空氣從供排氣口供給至熱 處理爐内，並且將該熱處理爐内之燃燒排氣從供排氣口透 過蓄熱室進行排氣之供排氣路。 亦即，本發明之課題為，在將上述蓄熱式燃燒器使用 在熱處理爐時，即使在供排氣口的部分附著有由鋁等金屬 或被處理材發生之各種雜質等所構成之附著物，亦可簡單 地去除該附著物。 (解決課題之手段） 為了要解決上述之課題，本發明之蓄熱式燃燒器係具 有：使燃料從燃料喷射喷嘴喷出以進行燃燒之燃燒器部； 收容有蓄熱材料之蓄熱室；及透過該蓄熱室將燃燒用空氣 從供排氣口供給至熱處理爐内，並且將該熱處理爐内之燃 6 322041 1379976 因此，無須如習知技術在使熱處理爐内之溫度充分地 降低後，作業員進入熱處理爐内將附著在供排氣口之部分 的附著物予以去除，或分解前述蓄熱式燃燒器之配管等， 並進行清掃等作業，而是可在熱處理爐内之溫度降低某種 程度之時間點，利用機械等並藉由清掃構件對附著在供排 氣口之部分的附著物有效率地進行清掃。 結果，在本發明中，可簡單地去除附著在蓄熱式燃燒 器之供排氣口之部分的附著物，不會像習知技術那樣作業 所需之時間非常長而大幅降低生產性。 此外，在將蓄熱式燃燒器之燃燒器部設置在前述供排 氣路之外部，以使燃料從該燃燒器部之燃料噴射喷嘴往從 前述供排氣口喷出之燃燒用空氣噴出並使之燃燒時，如上 所述打開維修用門扉，藉由清掃構件對附著在供排氣口之 部分的附著物進行清掃時，燃燒器部不會成為妨礙，可更 簡單地去除附著在供排氣口之部分的附著物。 【實施方式】 以下根據附圖具體地說明本發明之蓄熱式燃燒器及 熱處理爐。另外，本發明之蓄熱式燃燒器及熱處理爐並非 特別限定於下述實施形態所示者，只要在不變更發明之要 旨範圍内，均可作適當變更來實施。 在此，在本實施形態中，如第1圖所示，在熱處理爐 10之相對向的壁面11，以相對向之方式設置有一對蓄熱式 燃燒器20A、20B。 在此，在上述各蓄熱式燃燒器20A、20B中設置有： 1379976 使燃料分別從燃料噴射噴嘴21〇A、21 〇B、喷出以進行燃燒 之燃燒器部21A、21B ;收容有蓄熱材料220A、220B之蓄 熱室22A、22B ;及透過蓄熱室22A、kb將燃燒用空氣從 供排氣口？30A、230B供給至熱處理爐10内，並且將熱處 理爐10内之燃料排氣從供排氣口 230A、230B透過蓄熱室 22A ' 22B進行排氣之供排氣路23A、23B。 再者，在前述各蓄熱式燃燒器2〇A、2〇B中，分別將 燃燒器部21A、21B設置在前述供排氣路23A、23B之外 •部ώ 在此，在上述各燃燒器部21Α、21Β中，分別在1次 空氣供給喷嘴211Α、211Β的内部設置燃料嘴射喷嘴 210Α、210Β，並使燃料噴射喷嘴21〇α、210Β之前端部通 過設置在_1次空氣供給喷嘴、211Α、211Β之前端側的穩定 器（stabilizer) 212Α、212Β突出，並且在以上述方式突出 之燃料喷射噴嘴21〇A、21〇B的前端部附近設置點火器 ·( ignition plug) 213A、2ΰΒ。 接著’在上述各燃燒器部21A、21Β中進行燃燒時， 透過1次空氣供給管214A、214B對上述丨次空氣供給噴 嘴211A、211B供給1次空氣，並且透過燃料供給管215A、 215B對燃料喷射喷嘴210A、210B供給燃料。接著，將供 給至1次空氣供給喷嘴211A、211B之·丨次空氣透過設置 在前述穩定器212A、212B之多數個貫通孔216A、216B 導引至1次空氣供給噴嘴211A、211B的前端部’並且使 燃料從前述燃料喷射噴嘴210A、210B喷射，並藉由前述 322041 9 1379976 點火器213A、213B進行點火，以使上述燃料暫時燃燒。 此外，在前述各供排氣路23A、23B中，在對熱處理 爐10内進行供排氣之供排氣口 230A、230B與蓄熱室 22A、22B之間，設置由鉸鏈（未圖示）等進行開閉之維 修用門扉24A、24B。 在此’在本實施形態中’在設置維修用門靡24A、24B 時，將前述供排氣口 230A、230B與維修用門靡24A、24B 之間的供排氣路23A、23B之部分形成為直線狀，並且在 各維修用門扉24A、24B分別設置用以監視熱處理爐1 〇内 之火焰狀態的火焰監視用窗25A、25B。 接著，依據第1圖說明在本實施形態之熱處理爐1〇 中，使由鋁等金屬所構成之被處理材（未圖示）熔融或使 其他被處理材（未圖示）進行加熱處理之情形。 在一個蓄熱式燃燒器20A中，於燃燒器部21A中，如 上所述從1次空氣供給管214A對1次空氣供給噴嘴211 a 仏’’’c» 1久空氣，並且將燃料從燃料供給管215 a供給至燃 料喷射噴嘴210A，使燃料朝向從前述供排氣口 23〇A喷出 之燃燒用空氣進行一次燃燒接著，透過前述供排氣路23A 將燃燒用空氣導引至收容有蓄熱材料22〇A之蓄熱室 22A’並藉由蓄熱在蓄熱材料22〇A之熱使該燃燒用空氣加 熱，再使以上述方式加熱之燃燒用空氣透過前述供排氣口 230A從别述燃燒器部21A之附近噴出至熱處理爐1〇内， 以使前述燃料進行二次燃燒。 另—方面，在另一個蓄熱式燃燒器20B中，於其燃燒 322041 10 1379976 點’如第3圖所示，打開前述之維修用門靡24A、24B， 並使在導引棒31之前端設有呈鑛齒狀之去除部32的清掃 構件30 ’從維修用門扉24A、24B之開〇部分導入至呈直 線狀之供排氣路23A、23B的部分。再者，一面使該清掃 構件30旋轉’ 一面藉由上述之呈錯齒狀之去除部32使附 著在供排氣口 230A、230B之部分的附著物X去除。此外， 在如以上方式藉由清掃構件30使附著在供排氣口 23〇a、 230B之部分的附著物X去除時，清掃構件3〇之去除部32 會沿著供排氣路23A、23B適當地導引至供排氣口 230A、 230B之部分，並且藉由該去除部32有效率地將附著物X 從供排氣口 230A、230B去除，因此較佳為將前述去除部 32之直徑設定為與供排氣路μα、23B之内徑大致相同的 直徑或比該内徑稍微小之直徑，該供排氣路23A、23B係 從供排氣口 230A、230B形成直線狀。 如以上之方式構成時，可利用清掃構件30機械性地 簡單去除附著在各蓄熱式燃燒器20A、20B中之供排氣口 230A、230B之部分的附著物X，不會如習知技術般去除 附著在供排氣口 230A、230B之部分的附著物X之作業需 要非常長之時間，且生產性不會大幅地降低。 再者’如上所述在將蓄熱式燃燒器20A、20B中之燃 燒器部21A、21B設置在供排氣路BA、23B之外部時， 如上所述打開維修用門扉24A、24B，藉由清掃構件30對 附著在各供排氣口 230A、230B之部分的附著物X進行清 掃時，各燃燒器部21A、21B不會成為妨礙，可更簡單地 12 322041 1379976 去除附著在各供排氣口 230A、230B之部分的附著物X。 此外，在本實施形態之蓄熱式燃燒器20A、20B中， 雖如上所述將燃燒器部21A、21B設置在供排氣路23A、 23B之外部，但燃燒器部21A、21B之構成並不限定在此。 例如，如第4圖所示，設置用以使燃料喷出至供排氣 路23内之第1燃料噴射噴嘴2101、及用以使燃料喷出至 供排氣口 230之附近的熱處理爐10内之第2燃料噴射噴嘴 2102，以作為燃燒器部21之燃料喷射喷嘴210，且亦可使 • 用設置有使從前述第1燃料喷射喷嘴2101喷出之燃料在供 排氣路23内點燃之點火器213者。此外，利用該燃燒器部 21使燃料燃燒時，在熱處理爐10内之溫度為燃料之點燃 溫度以下時，使燃料從前述第1燃料喷射喷嘴2101喷出至 供排氣路23内，並且透過供排氣路23導引燃燒用空氣， 並藉由前述點火器213點火而使燃料暫時燃燒，同時使燃 燒從設置在供排氣口 230之附近的第2燃料喷射喷嘴2102 φ 喷出至熱處理爐10内，以使該燃料進行二次燃燒。另一方 面，當熱處理爐10内之溫度成為燃料之點燃溫度以上時， 可使燃燒僅從前述第2燃料噴射喷嘴2102喷射，以進行燃 燒。 再者，在使用該燃燒器部21方面，亦在供排氣口 230 與蓄熱室22之間之形成直線狀的供排氣路23之部分，藉 由在供排氣口 230之相反側設置由鉸鏈等進行開閉之維修 用門扉24，而與前述情形同樣地，可藉由清掃構件30簡 單地去除附著在供排氣口 230之部分的附著物X。 13 322041 1379976 【圖式簡單說明】 第1圖係顯示實施本發明之一實施形態之熱處理爐 中，使用成對之蓄熱式燃燒器進行燃燒及蓄熱之狀態的概 略說明圖。 第2圖係顯示實施本發明之一實施形態之熱處理爐 中，當附著物附著在各蓄熱式燃燒器中之供排氣口之部分 而蓄積時停止各蓄熱式燃燒器之燃燒之狀態的概略說明 圖。 第3圖係顯示實施本發明之一實施形態之熱處理爐 中，藉由清掃構件對附著在蓄熱式燃燒器中之供排氣口之 部分的附著物進行清掃之狀態的局部說明圖。 第4圖係顯示實施本發明之一實施形態之熱處理爐 中，使蓄熱式燃燒器中之燃燒器部變更之變更例的概略說 明圖。 【主要元件符號說明】 10 熱處理爐 11 壁面 20、20A、20B 蓄熱式燃燒器 21 ' 21A ' 21B 燃燒器部 22 > 22A ' 22B 蓄熱室 23、23A、23B 供排氣路 24 ' 24A ' 24B 維修用門扉 25、25A、25B 火焰監視用窗 30 清掃構件 14 322041 1379976 31 32 210、210A、210B 211A、211B 212A、212B 213、213A、213B 214A、214B 215A ' 215B 216A、216B 220、220A、220B 230 ' 230A ' 230B 2101 2102 X 導引棒 去除部 燃料喷射喷嘴 1次空氣供給喷嘴 穩定器 點火器 1次空氣供給管 燃料供給管 貫通孔 蓄熱材料 供排氣口 第1燃料喷射喷嘴 第2燃料喷射喷嘴 附著物1379976 VI. Description of the Invention: _ Technical Field of the Invention The present invention relates to a regenerative burner and a heat treatment furnace using the regenerative burner, wherein the regenerative burner has a fuel injection from a fuel a burner portion that ejects a nozzle for combustion; a regenerator that houses the heat storage material; and a combustion regenerator that supplies combustion air from the supply and exhaust port to the heat treatment furnace, and the combustion row in the heat treatment furnace The gas is supplied from the supply and exhaust port through the regenerator to supply and exhaust the exhaust gas. In particular, in the case where a metal such as aluminum or the like is melted by a heat treatment furnace using a regenerative burner, or the material to be treated is subjected to heat treatment, and at the supply and exhaust port of the regenerative burner In the case where a deposit composed of a metal such as aluminum or various impurities generated by the material to be processed is partially adhered, the deposit can be easily removed. [Prior Art] In recent years, in a heat treatment furnace in which a metal such as aluminum is melted or a heat treatment is performed on various materials to be treated, in order to effectively utilize the heat of the combustion exhaust gas, energy is reduced by φ, as in Patent Documents 1 to 4. As shown in the above, a regenerative burner is generally used. The regenerative burner has a burner portion that ejects fuel from a fuel injection nozzle to perform combustion, a regenerator that houses a heat storage material, and a regenerator that passes through the regenerator. The combustion air is supplied from the supply and exhaust port to the heat treatment furnace, and the combustion exhaust gas in the heat treatment furnace is supplied from the supply and exhaust port through the regenerator to supply and exhaust the exhaust gas. Here, in the heat treatment furnace using such a regenerative burner, the above-described pair of regenerative burners are used, and in one of the regenerative burners, 4322041 1379976. combustion air is supplied from the supply and exhaust passages through the regenerator The combustion air will be guided from the supply and exhaust port into the heat treatment furnace, and the fuel gas is injected from the fuel injection nozzle in the burner portion to perform combustion, and on the other hand, in the other regenerative burner _ The combustion exhaust gas in the heat treatment furnace is guided from the supply and exhaust port to the regenerator containing the heat storage material through the supply and exhaust passage, and the heat of the combustion exhaust gas is stored in the heat storage material of the regenerator, and then the exhaust gas is supplied through the exhaust gas. The road is discharged and the above operation is performed on each other in a pair of regenerative burners. However, in the heat treatment furnace in which the metal such as Ming is melted or the various materials to be treated are subjected to heating treatment, as described above, the combustion exhaust gas in the heat treatment furnace is guided from the supply and exhaust port through the supply and exhaust passage to the heat storage. In the regenerator of the material, there is a problem in that a metal such as aluminum contained in the combustion exhaust gas or various impurities generated by the material to be treated adhere to the portion of the supply and exhaust port and gradually accumulate, thereby causing heat storage. The problem of gradually decreasing combustion capacity in a burner. Therefore, as described above, it is necessary to remove the deposit such as gold genus attached to the portion of the supply and exhaust port, and in the prior art, the combustion of the regenerative burner is stopped, and the temperature in the heat treatment furnace is sufficiently lowered. When the worker enters the heat treatment furnace, the deposit attached to the portion of the supply and exhaust port is removed, or the piping of the regenerative burner is decomposed to perform cleaning or the like. However, when the deposit such as metal adhered to the portion of the air supply and exhaust port is removed in the above manner, there is a problem that it takes a long time to stop the combustion of the regenerative burner and sufficiently reduce the temperature in the heat treatment furnace. At the time, the work efficiency becomes very poor, and it takes a long time, 5 322041 1379976, to reduce the productivity, if the combustion is to be performed again and the temperature in the heat treatment furnace is sufficiently increased. (Patent Document 1) Japanese Laid-Open Patent Publication No. Hei 9-222223 (Patent Document No. JP-A-2002-295812) (Patent Document 4) In the heat treatment furnace using a regenerative burner, a metal such as aluminum is melted or processed. In the above-described various problems in the heat treatment of the material, the regenerative burner has a burner portion that discharges fuel from the fuel injection nozzle to perform combustion, a regenerator that houses the heat storage material, and a combustion air that passes through the regenerator The exhaust gas is supplied from the supply and exhaust port to the heat treatment furnace, and the combustion exhaust gas in the heat treatment furnace is passed through the regenerator from the supply and exhaust port to supply and exhaust the exhaust gas. In other words, when the regenerative burner is used in a heat treatment furnace, the deposit of a metal such as aluminum or a material to be processed adheres to a portion of the supply and exhaust port. The attachment can also be removed simply. (Means for Solving the Problems) In order to solve the above problems, the regenerative burner of the present invention includes: a burner unit that discharges fuel from a fuel injection nozzle to perform combustion; a regenerator that stores a heat storage material; The regenerator supplies combustion air from the supply and exhaust port to the heat treatment furnace, and burns the heat in the furnace 6 322041 1379976. Therefore, the worker does not need to be sufficiently lowered in the heat treatment furnace as in the prior art, the operator enters In the heat treatment furnace, the deposit attached to the portion of the supply and exhaust port is removed, or the piping of the regenerative burner is decomposed, and the cleaning or the like is performed, but the temperature in the heat treatment furnace is lowered to some extent. At the point, the attachment of the portion adhering to the air supply and exhaust port is efficiently cleaned by a cleaning member using a machine or the like. As a result, in the present invention, the adhering matter adhering to the portion of the refrigerating port of the regenerative burner can be easily removed, and the time required for the operation of the regenerative burner is not so long as to reduce the productivity. Further, the burner portion of the regenerative burner is disposed outside the supply and exhaust passage so that fuel is ejected from the fuel injection nozzle of the burner portion to the combustion air ejected from the supply and exhaust port and At the time of combustion, when the maintenance sill is opened as described above, when the cleaning member cleans the adhering matter attached to the portion of the air supply and exhaust port, the burner portion does not become an obstacle, and the adhesion to the exhaust gas can be more easily removed. Attachment of part of the mouth. [Embodiment] Hereinafter, a regenerative burner and a heat treatment furnace of the present invention will be specifically described with reference to the drawings. In addition, the regenerative burner and the heat treatment furnace of the present invention are not limited to the embodiments described below, and may be appropriately modified without departing from the scope of the invention. Here, in the present embodiment, as shown in Fig. 1, a pair of regenerative burners 20A and 20B are provided in the opposing wall surface 11 of the heat treatment furnace 10 so as to face each other. Here, each of the regenerative burners 20A and 20B is provided with: 1379976 burner portions 21A and 21B for discharging fuel from the fuel injection nozzles 21A and 21B, respectively, and storing the heat storage material. The regenerators 22A and 22B of 220A and 220B; and the combustion air from the supply and exhaust ports through the regenerators 22A and kb? 30A and 230B are supplied to the heat treatment furnace 10, and the fuel exhaust gas in the heat treatment furnace 10 is exhausted from the supply and exhaust ports 230A and 230B through the regenerators 22A to 22B to supply and exhaust the exhaust passages 23A and 23B. Further, in each of the regenerative burners 2A, 2B, the burner portions 21A, 21B are provided outside the supply and exhaust passages 23A, 23B, respectively. Here, in each of the burners described above In the first and second air supply nozzles 211 Α and 211 设置, the fuel nozzles 210 Α and 210 设置 are provided, and the fuel injection nozzles 21 〇 α and 210 Β are provided at the first end of the fuel injection nozzles 21 〇 α and 210 设置 through the air supply nozzles. At the front end side of the 211 Α, 211 的, stabilizers 212 Α and 212 Β protrude, and igniters 213A and 2 设置 are provided in the vicinity of the front end portions of the fuel injection nozzles 21A, 21B protruding in the above manner. Then, when the combustion is performed in each of the burner portions 21A and 21B, the primary air supply nozzles 211A and 211B are supplied with primary air through the primary air supply pipes 214A and 214B, and the fuel is supplied through the fuel supply pipes 215A and 215B. The injection nozzles 210A, 210B supply fuel. Then, the air supplied to the primary air supply nozzles 211A and 211B is transmitted through the plurality of through holes 216A and 216B provided in the stabilizers 212A and 212B to the tip end portions of the primary air supply nozzles 211A and 211B. Further, fuel is injected from the fuel injection nozzles 210A, 210B, and ignited by the aforementioned 322041 9 1379976 igniters 213A, 213B to temporarily burn the fuel. Further, in each of the supply and exhaust passages 23A and 23B, a hinge (not shown) or the like is provided between the supply and exhaust ports 230A and 230B for supplying and discharging the heat treatment furnace 10 and the regenerators 22A and 22B. The maintenance thresholds 24A and 24B are opened and closed. Here, in the present embodiment, when the maintenance thresholds 24A and 24B are provided, portions of the supply and exhaust ports 23A and 23B between the supply and exhaust ports 230A and 230B and the maintenance thresholds 24A and 24B are formed. The flame monitoring windows 25A and 25B for monitoring the flame state in the heat treatment furnace 1 are provided in each of the maintenance thresholds 24A and 24B. Next, in the heat treatment furnace 1 of the present embodiment, a material to be processed (not shown) made of a metal such as aluminum is melted or another processed material (not shown) is subjected to heat treatment. situation. In one regenerative burner 20A, in the burner portion 21A, as described above, the air is supplied to the primary air from the primary air supply pipe 214A to the primary air 211 a 仏'''c»1, and the fuel is supplied from the fuel. The tube 215a is supplied to the fuel injection nozzle 210A, and the fuel is once combusted toward the combustion air discharged from the supply and exhaust port 23A, and then the combustion air is guided through the supply and exhaust passage 23A to store the heat storage. The regenerator 22A' of the material 22A is heated by the heat of the heat storage material 22A, and the combustion air heated in the above manner is transmitted through the supply and exhaust port 230A from the burner. The vicinity of the portion 21A is ejected into the heat treatment furnace 1 to perform secondary combustion of the fuel. On the other hand, in the other regenerative burner 20B, at the point of burning 322041 10 1379976 points, as shown in Fig. 3, the aforementioned service sills 24A, 24B are opened, and the front end of the guide rod 31 is provided. The cleaning member 30' having the ore-like removing portion 32 is introduced from the opening portion of the maintenance door sills 24A, 24B to the portions of the linear supply and exhaust passages 23A, 23B. Further, the attachment member X attached to the air supply and exhaust ports 230A and 230B is removed by the above-described tooth-shaped removing portion 32 while rotating the cleaning member 30. Further, when the attachment member X adhering to the portion of the air supply and exhaust ports 23a, 230B is removed by the cleaning member 30 as described above, the removal portion 32 of the cleaning member 3A is along the supply and exhaust passages 23A, 23B. The portion of the supply and exhaust ports 230A, 230B is appropriately guided, and the attachment portion X is efficiently removed from the supply and exhaust ports 230A, 230B by the removal portion 32. Therefore, the diameter of the removal portion 32 is preferably used. The diameter is substantially the same as the inner diameter of the supply and exhaust passages μα and 23B or a diameter slightly smaller than the inner diameter, and the supply and exhaust passages 23A and 23B are linearly formed from the supply and exhaust ports 230A and 230B. According to the above configuration, the cleaning member 30 can mechanically easily remove the adhering matter X adhering to the portions of the heat supply and exhaust ports 230A and 230B of the respective regenerative burners 20A and 20B without being as in the prior art. The work of removing the deposits X attached to the portions of the supply and exhaust ports 230A, 230B takes a very long time, and the productivity is not greatly lowered. Further, when the burner portions 21A and 21B of the regenerative burners 20A and 20B are disposed outside the supply and exhaust passages BA and 23B as described above, the maintenance thresholds 24A and 24B are opened as described above by cleaning. When the member 30 cleans the deposit X adhering to the portions of the respective supply and exhaust ports 230A and 230B, the burner portions 21A and 21B do not become obstructive, and can be easily removed from the respective air supply and exhaust ports by 12 322041 1379976. Attachment X of part of 230A, 230B. Further, in the regenerative burners 20A and 20B of the present embodiment, the burner portions 21A and 21B are provided outside the supply and exhaust passages 23A and 23B as described above, but the configurations of the burner portions 21A and 21B are not Limited to this. For example, as shown in FIG. 4, a first fuel injection nozzle 2101 for discharging fuel into the supply and exhaust passage 23 and a heat treatment furnace 10 for discharging fuel to the vicinity of the supply and exhaust port 230 are provided. The second fuel injection nozzle 2102 is provided as the fuel injection nozzle 210 of the burner unit 21, and the fuel discharged from the first fuel injection nozzle 2101 may be ignited in the supply and exhaust passage 23. The igniter 213. Further, when the fuel is burned by the burner unit 21, when the temperature in the heat treatment furnace 10 is equal to or lower than the ignition temperature of the fuel, the fuel is discharged from the first fuel injection nozzle 2101 to the supply and exhaust passage 23, and is permeated. The supply and exhaust passage 23 guides the combustion air, and the fuel is temporarily burned by the ignition of the igniter 213, and the combustion is ejected from the second fuel injection nozzle 2102 φ provided in the vicinity of the supply and exhaust port 230 to the heat treatment. Inside the furnace 10, the fuel is subjected to secondary combustion. On the other hand, when the temperature in the heat treatment furnace 10 becomes equal to or higher than the ignition temperature of the fuel, the combustion can be performed only from the second fuel injection nozzle 2102 to perform combustion. Further, in the case where the burner portion 21 is used, the portion of the supply and exhaust port 230 and the regenerator 22 that forms the linear supply and exhaust passage 23 is also provided on the opposite side of the supply and exhaust port 230. The maintenance door sill 24 that is opened and closed by a hinge or the like can be simply removed from the portion of the air supply and exhaust port 230 by the cleaning member 30 as in the case described above. 13 322041 1379976 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic explanatory view showing a state in which combustion and heat storage are performed using a pair of regenerative burners in a heat treatment furnace according to an embodiment of the present invention. Fig. 2 is a view showing a state in which the combustion of each of the regenerative burners is stopped when the deposits adhere to the portions of the heat supply and exhaust ports of the respective regenerative burners in the heat treatment furnace according to the embodiment of the present invention. Illustrating. Fig. 3 is a partial explanatory view showing a state in which the adhering member attached to the supply and exhaust port of the regenerative burner is cleaned by the cleaning member in the heat treatment furnace according to the embodiment of the present invention. Fig. 4 is a schematic view showing a modified example in which the burner unit in the regenerative burner is changed in the heat treatment furnace according to the embodiment of the present invention. [Description of main components] 10 Heat treatment furnace 11 Wall 20, 20A, 20B Regenerative burner 21 ' 21A ' 21B Burner section 22 > 22A ' 22B Regenerative chamber 23, 23A, 23B Exhaust passage 24 ' 24A ' 24B Maintenance thresholds 25, 25A, 25B Flame monitoring window 30 Cleaning member 14 322041 1379976 31 32 210, 210A, 210B 211A, 211B 212A, 212B 213, 213A, 213B 214A, 214B 215A ' 215B 216A, 216B 220, 220A, 220B 230 '230A ' 230B 2101 2102 X Guide rod removal part fuel injection nozzle primary air supply nozzle stabilizer igniter primary air supply pipe fuel supply pipe through hole heat storage material supply and exhaust port first fuel injection nozzle second fuel injection Nozzle attachment
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