201231901 六、發明說明： 【發明所屬之技術領域】 本發明關於爐加熱用燃燒裝置，在與形成於爐壁的火 焰通過孔連通的狀態，連接於上述爐壁的風箱，設置成在 爐壁側具備有圓筒狀的筒部且從燃燒用空氣供給手段供給 燃燒用空氣的狀態，在中央部具備有使氣體燃料流通的燃 料流路，且在外周部具備有使一次空氣流通的一次空氣流 路而形成爲雙重管狀的長條狀的燃燒器，設置成：將上述 風箱的位於遠離上述爐壁側的背壁部貫穿的狀態，上述燃 燒器的前端部，在其外周面與上述筒部的內周面之間形成 有使上述風箱內的空氣作爲二次空氣流通的二次空氣流路 的狀態，位於上述筒部的內部。 【先前技術】 該爐加熱用燃燒裝置，是用於加熱：將玻璃或金屬等 的被熔解物熔解的熔解爐、或將鍛造件等的被加熱物進行 加熱的加熱爐等的各種爐。 作爲這種爐加熱用燃燒裝置，燃燒器作成具備有：設 置成涵蓋燃燒器全長的狀態而形成燃料流路的燃料供給用 的管狀體、以及其位置將該管狀體的從位於風箱外部的部 位到前端部位的部分予以覆蓋，在其與管狀體之間形成一 次空氣流路，且其與風箱的筒部之間形成二次空氣流路的 空氣供給用的管狀體；來自作爲燃燒用空氣供給手段的送 風機的燃燒用空氣，除了供給到風箱之外，也供給到：空 -5- 201231901 氣供給用的管狀體的位於風箱的外部的部分（例如’參考 專利文獻1 ) » [先前技術文獻] [專利文獻] [專利文獻1] 日本特開2002— 13704號公報（第1圖〜第3圖） 【發明內容】 [發明欲解決的課題] 在以往的爐加熱用燃燒裝置，位於燃燒器的風箱的外 部的燃燒器部分，成爲雙重管狀的較大直徑，所以會有設 計空間變大的缺點，而來自送風機的燃燒用空氣，除了供 給到風箱之外，也供給到：空氣供給用的管狀體的位於風 箱的外部的部位，所以將燃燒用空氣供給到燃燒器的構造 很複雜，並且，會有爐外部的設置空間變大的缺點。 也就是說，爐外部的空間，利用爲用來進行維修等的 作業空間等’使用在各種目的，希望配置於該空間的各種 機器類的緊緻化，而以往的爐加熱用燃燒用裝置，除了構 造複雜之外’在爐外部需要很大的設置空間，而希望緊緻 化。 在該爐加熱用燃燒裝置，將流通於一次空氣流路的一 次空氣量與流通於二次空氣流路的二次空氣量的比例進行 調整’以充分的一次空氣將從燃料流路噴出的氣體燃料進 -6 - 201231901 行充分的一次燃燒，同時以二次空氣進行二次燃燒 狀態、或者以少量的一次空氣將從燃料流路噴出的 料進行燃燒，同時以充分的二次空氣進行二次燃燒 狀態，因應使用狀態來切換上述狀態，而爲了調整 焰的形成狀態，希望能將流通於一次空氣流路的一 量與流通於二次空氣流路的二次空氣量的比例進行 在以往的爐加熱用燃燒裝置’爲了能將流通於 氣流路的一次空氣量與流通於二次空氣流路的二次 的比例進行調整，一般來說，在從送風機將燃燒用 給到風箱的流路、或從送風機將燃燒空氣供給到空 用的管狀體的流路，具有有風量調整用的阻尼器， 具有該阻尼器的話，則爐外部的設置空間就會進一 0 本發明是爲了上述情形所作出，其目的要提供 加熱用燃燒裝置，能將流通於一次空氣流路的一次 、與流通於二次空氣流路的二次空氣量的比例進行 也達成其構造的簡化，並且減少爐外部的設置空間 [用以解決課題的手段] 本發明的爐加熱用燃燒裝置，在與形成於爐壁 通過孔連通的狀態，連接於上述爐壁的風箱，設置 爐壁側具備有圓筒狀的筒部，且從燃燒用空氣供給 給燃燒用空氣的狀態， 形成爲雙重管狀的長條狀的燃燒器，在中央部 的燃燒 氣體燃 的燃燒 燃燒火 次空氣 調整。 —次空 空氣量 空氣供 氣供給 而如果 步變大 —種爐 空氣量 調整， 的火焰 成：在 手段供 具備有 201231901 使氣體燃料流通的燃料流路，且在其外周部具備有使一次 空氣流通的一次空氣流路，設置成貫穿背壁部的狀態’該 背壁部位於上述風箱的遠離上述爐壁側； 上述燃燒器前端部，在其外周面與上述筒部的內周面 之間，形成有：使上述風箱內的空氣作爲二次空氣流通的 二次空氣流路的狀態，位於上述筒部的內部： 上述燃燒器所具備的上述一次空氣流路，在上述燃燒 器的前端部，設置成：讓上述風箱內的空氣從後端部進入 而朝前端側流通的狀態，上述燃燒器，形成爲其前端部作 得較上述燃燒器的其他部分更大直徑的狀態： 設置有：用來將流通於上述一次空氣流路的一次空氣 量與流通於上述二次空氣流路的二次空氣量的比例進行調 整，讓上述燃燒器可在其長邊方向自由調整位置地將其對 於上述風箱的背壁部支承的燃燒器支承手段。 也就是說，從燃燒用空氣供給手段供給到風箱的燃燒 用空氣的一部分，從位於風箱內的一次空氣流路的後端部 進入’作爲一次空氣流通於一次空氣流路，而從燃燒用空 氣供給手段供給到風箱的燃燒用空氣的一部分，作爲二次 空氣而流通於：在位於風箱內的燃燒器的前端部的外周面 與風箱的筒部的內周面之間形成的二次空氣流路，通過燃 料流路流通而從該燃料流路的前端噴出的氣體燃料，與一 次空氣及二次空氣混合而燃燒。 相對於風箱的背壁部’將燃燒器的位置在其長邊方向 調整’藉由將流通於一次空氣流路的一次空氣量與流通於 -8 - 201231901 上述二次空氣流路的二次空氣量的比例進行變更調整，以 充分的一次空氣將從燃料流路噴出的氣體燃料進行充分的 一次燃燒，同時以二次空氣進行二次燃燒的燃燒狀態、或 者以少量的一次空氣將從燃料流路噴出的氣體燃料進行燃 燒，同時以充分的二次空氣進行二次燃燒的燃燒狀態，因 應使用狀態來切換，則能切換燃燒器的燃燒狀態。 也就.是說，藉由相對於風箱的背壁部，將燃燒器的位 置在其長邊方向調整，則能變更將燃燒器的前端部插入於 風箱的筒部內的量，當插入於燃燒器前端部的筒部內的量 變更時，則在燃燒器的前端部的外周面與風箱的筒部的內 周面之間形成的二次空氣流路的流通阻力會增減，則能將 供給到風箱內的燃燒用空氣流通於一次空氣流路的一次空 氣量與流通於上述二次空氣流路的二次空氣量的比例進行 變更調整。 位於燃燒器的風箱的外側的部分，雖然形成使氣體燃 料流通的燃料流路，而由於不需要形成一次空氣流路，所 以變得較小直徑，而能達到減少爐外部的燃燒器的設置空 間。 將流通於一次空氣流路的一次空氣量與流通於二次空 氣流路的二次空氣量的比例進行變更調整，也在爐外部， 只設置有：將來自燃燒用空氣供給手段的燃燒空氣導引到 風箱的流路，所以能達成：供給燃燒用空氣的構造的簡化 、以及將用來供給燃燒用空氣的構造設置在爐外部的設置 空間的減少化。 -9- 201231901 將燃燒器相對於風箱的背壁部支承爲可在其長邊方向 自由調整位置的方式，能以簡單的構造進行，而風箱的背 壁部，由於以外空氣冷卻，所以能防止：將燃燒器支承於 風箱的背壁部的支承手段被燃燒熱量加熱而受損，能維持 長時間良好地進行：將燃燒器在其長邊方向進行位置調整 的方式。 對於在將於燃燒器的前端部具備的一次空氣流路流通 的一次空氣量、與於在燃燒器前端部的外周面與風箱的筒 部的內周面之間形成的二次空氣流路流通的二次空氣量的 比例進行調整，而在風箱內，區劃形成有：將從燃燒用空 氣供給手段供給的燃燒用空氣導引到一次空氣流路的流路 、以及將其導引到二次空氣流路的流路，而且在風箱內裝 備有：將從風箱內對於這些流路導引的空氣量進行調整的 阻尼器，而這種構造的情況，會因爲在風箱內爲了形成流 路所進行的區劃方式、以及在風箱內裝備阻尼器的方式， 容易造成構造複雜化，而在因爲燃燒熱而高溫化的風箱內 ，裝備阻尼器，所以因爲燃燒熱將該阻尼器加熱導致受損 的原因，而很難長期良好地使用。 藉由本發明，能提供一種爐加熱燃燒裝置，作成能將 流通於一次空氣流路的一次空氣量與流通於二次空氣流路 的二次空氣量的比例進行調整，且能達到其構造的簡化， 並且能減少爐外部的設置空間，並且能維持長時間良好地 使用。 在本發明的實施方式， -10- 201231901 設置有：將供給於上述燃燒器的氣體燃料供給量進行 變更調整的燃料調整手段， 上述燃燒用空氣供給手段，可自由變更調整燃燒用空 氣的供給量。 也就是說，藉由燃料調整手段將供給於燃燒器的氣體 燃料供給量進行調整，且配合該氣體燃料供給量的調整， 藉由將從燃燒用空氣供給手段供給的燃燒用空氣的供給量 進行變更調整，在維持著供給：將所供給的氣體燃料進行 燃燒所需要的空氣量的狀態，能變更氣體燃料的燃燒量。 而且，合倂變更氣體燃料的燃燒量的方式，藉由將流 通於一次空氣流路的一次空氣量與流通於二次空氣流路的 二次空氣量的比例進行調整，切換：將大量的氣體燃料， 以充分的一次空氣進行一次燃燒，同時以二次空氣進行二 次燃燒的燃燒狀態、與以少量的一次空氣進行燃燒同時以 充分的二次空氣進行二次燃燒的燃燒狀態；或者切換：將 少量的氣體燃料，以充分的一次空氣進行一次燃燒，同時 以二次空氣進行二次燃燒的燃燒狀態、與以少量的一次空 氣進行燃燒同時以充分的二次空氣進行二次燃燒的燃燒狀 態；能因應使用狀態切換成各種燃燒狀態。 於是可提供一種爐加熱用燃燒裝置，能變更燃燒量， 同時能切換成各種燃燒狀態。 在本發明的實施方式， 上述燃燒器形成爲具備有：設置成涵蓋其全長的狀態 ，形成上述燃料流路的燃料供給用的管狀體；其位置覆蓋 -11 - 201231901 該管狀體的前端部，其與該管狀體之間形成上述一次空氣 流路，且其與上述風箱的筒部之間形成上述二次空氣流路 的筒狀的流路形成體；以及配置在該流路形成體的後端部 與上述燃料供給用的管狀體之間，且形成有一次空氣進入 用的空氣流通孔的保焰板。 也就是說，燃燒器作成：以流路形成體，將形成燃料 流路的燃料供給用的管狀體的前端部予以覆蓋。 而且具備有：配置在流路形成體的後端部與上述燃料 供給用的管狀體之間，且形成有一次空氣進入用的空氣流 通孔的保焰板，所以當氣體燃燒量較少時，能以保焰板保 焰且使氣體燃料良好地燃燒。 當氣體燃燒量較多時，能以風箱的筒部保焰且使大量 的氣體燃料燃燒。 在氣體燃燒量較多或較少時，能變更保焰的型態且使 氣體燃料燃燒，所以在較大範圍使氣體燃燒量變更也能將 其良好地燃燒，換言之，能在較大範圍使氣體燃燒量變更 〇 於是能提供一種爐加熱用燃燒裝置，能在較大範圍使 氣體燃燒量變更》 本發明的實施方式， 讓上述燃燒器在其長邊方向自由移動地嵌合的筒狀的 燃燒器支承體，設置於上述風箱的背壁部，設置有定位體 ’該定位體可自由切換：對於該燃燒器支承體將上述燃燒 器定位的定位狀態、與解除定位的解除狀態； -12- 201231901 上述燃燒器支承手段，以上述燃燒器支承體將上述燃 燒器支承爲可在其長邊方向自由移動，且是以上述定位體 將上述燃燒器的長邊方向的移動予以定位的手段。 也就是說，以將定位體切換成解除燃燒器的定位的解 除狀態，對於設置於風箱的背壁部的筒狀的燃燒器支承體 ，將燃燒器在其長邊方向移動調整，且使定位體成爲定位 狀態的順序，將燃燒器的長邊方向的位置，也就是將流通 於一次空氣流路的一次空氣量與流通於二次空氣流路的二 次空氣量的比例進行調整。 作爲定位體，能夠作成：相對於燃燒器支承體螺合成 在其直徑方向自由移動，將燃燒器的外面按壓的按壓螺栓 〇 以具備有筒狀的燃燒器支承體與定位體的簡單的構造 ，則能將燃燒器在長邊方向移動調整，所以藉由燃燒器支 承手段的簡化，則能達成全體構造的簡化。 在風箱的背壁部設置有筒狀的燃燒器支承體的方式， 即使對於既有設置的風箱也能簡單地進行，所以能良好地 進行：改造既有的裝置來設置燃燒器支承手段，也就是將 既有的裝置改造成本發明的裝置。 於是能提供一種爐加熱用的燃燒裝置，能達到全體構 造的簡化，也能改造既有的裝置，改造成本發明的裝置。 在本發明的實施方式， 設置有：以從爐內排出的排廢氣將從上述燃燒用空氣 供給手段所供給的燃燒用空氣進行預熱的預熱手段。 -13- 201231901 也就是說，藉由預熱手段，以從爐內排出的排廢氣將 從燃燒用空氣供給手段所供給的燃燒用空氣進行預熱，所 以能將爐內高效率地加熱至高溫。 在將燃燒用空氣預熱的情況，雖然風箱內變得溫度更 高，可是風箱的背壁部是以外空氣冷卻，所以即使將燃燒 用空氣預熱的情況，也能防止：將燃燒器支承於風箱的背 壁部的支承手段’被燃燒熱加熱而受損，能維持長時間良 好地進行：將燃燒器在其長邊方向進行位置調整。 於是能提供一種爐加熱用燃燒裝置，能將爐內有效率 地加熱至高溫。 【實施方式】 以下根據圖面來說明本發明的爐加熱用燃燒裝置。 本實施方式的爐加熱用燃燒裝置，如第1圖所示，舉 例顯示使用作爲玻璃熔解爐G的加熱的情況。 也就是說，玻璃熔解爐G，在爐主體1的內部的下方 具備有熔解爐2，爐加熱用燃燒裝置，在熔解槽2的上方的 爐內空間，以形成橫向（也就是水平方向）的火焰F的狀 態使氣體燃料燃燒。 爐加熱用燃燒裝置，如第2圖所示，具備有：燃燒器B 、風箱4、以及送風風扇K ; 該形成爲雙重管狀的長條狀的燃燒器B，具備有在中 央部使氣體燃料流通的燃料流路R，且在其外周部具備有 使一次空氣流通的一次空氣流路A 1 ; -14- 201231901 該風箱4，在連通於爐主體1的爐壁1A的火焰通過孔3 的狀態，連接於爐壁； 該送風風扇Κ，通過空氣流路6將燃燒用空氣供給到 該風箱4而作爲燃燒用空氣供給手段。 在空氣流路6，設置有：以從爐內排出的排廢氣，將 從送風風扇Κ所供給的燃燒用空氣進行預熱的作爲預熱手 段的熱交換部Ε，將燃燒用空氣預熱到例如600°C，而且讓 爐內溫度成爲例如1 〇〇〇°C。 風箱4形成爲：全體爲橫倒姿勢（也就是朝水平延伸 的姿勢）的圓筒狀，且以位於遠離爐壁1 A側的背壁部4 A 將背部關閉的狀態，在上部形成有燃燒用空氣的流入口 5 。而且風箱4的爐壁側的前端部作成與爐壁1A連接的圓筒 狀的筒部T。這裡的筒部T，是定義爲：風箱4的爐壁1A的 外面、與燃燒用空氣的流入口 5的最接近爐壁1A的外面的 點，之間的筒狀部分。 如第2圖及第3圖所示，燃燒器B設置成將風箱4的背壁 部4 A貫穿的狀態，其前端部，以在其外周面與風箱4的筒 部T的內周面之間形成有使風箱內的空氣作爲二次空氣流 通的二次空氣流路A2的狀態，位於筒部T的內部。 而且燃燒器B的前端部，形成爲較燃燒器B的其他部 分更大直徑。在燃燒器B所具備的一次空氣流路A1，在燃 燒器B的前端部，設置成：使風箱內的空氣從下面說明的 流路形成體8的後端部進入而朝前端側流通的狀態° 也參考第4圖及第5圖針對燃燒器B加以說明’燃燒器 -15- 201231901 B，形成爲具備有：設置成涵蓋其全長的狀態而形成燃料 流路R的燃料供給用的管狀體7、其位置覆蓋該管狀體7的 前端部，在其與該管狀體7之間形成一次空氣流路A且在 其與風箱4的筒部T之間形成二次空氣流路A2的筒狀的流 路形成體8、以及配置在該流路形成體8的後端部與管狀體 7之間，且形成有一次空氣進入用的空氣流通孔S的保焰板 9 〇 管狀體7，是由：基端側的筒體7A、與該基端側的筒 體7A的前端外嵌裝的中間的简體7B、以及與該中間的筒 體7B連接的前端的筒體7C所構成；在基端側的筒體7A的 後端部，連接有：用來供給氣體燃料的氣體燃料供給管1〇 〇 中間的筒體7B、前端的筒體7C、及保焰板9是作爲噴 嘴而形成爲一體，該噴嘴的中間的筒體7B，是以螺合狀態 外嵌裝於基端側的筒體7A。 氣體燃料供給管1 〇，如後述，爲了允許燃燒器B在其 長邊方向調整位置，而使用可自由彎曲延伸的可撓性管。 保焰板9，是由：外嵌裝於管狀體7的前端的筒體7C的 環狀的板體9 A、以及其位置沿著該板體9 A的外周方向而 隔著間隔，將該板體9A與流路形成體8連接的支承體9B所 構成；空氣流通孔S，在板體9 A與流路形成體8之間，形 成在鄰接的支承體9B之間。201231901 6. TECHNOLOGICAL FIELD OF THE INVENTION [Technical Field] The present invention relates to a furnace for heating a furnace, which is connected to a bellows of the furnace wall in a state of being communicated with a flame passage hole formed in a furnace wall, and is disposed at a furnace wall The side is provided with a cylindrical tubular portion, and the combustion air is supplied from the combustion air supply means. The central portion is provided with a fuel flow path through which the gaseous fuel flows, and the outer peripheral portion is provided with primary air for circulating the primary air. a long-shaped burner that is formed into a double tubular shape by a flow path, and is provided in a state in which the back wall portion of the wind box that is located away from the furnace wall side is penetrated, and the front end portion of the burner is on the outer circumferential surface thereof A state in which the air in the bellows flows through the secondary air as a secondary air is formed between the inner peripheral surfaces of the tubular portion, and is located inside the tubular portion. [Prior Art] The furnace heating apparatus is a furnace for heating a melting furnace that melts a molten material such as glass or metal, or a heating furnace that heats a workpiece such as a forged product. In the combustion apparatus for furnace heating, the burner is provided with a tubular body for supplying fuel to form a fuel flow path in a state covering the entire length of the burner, and a position of the tubular body from the outside of the bellows. a portion of the portion that is covered by the front end portion, a primary air flow path formed between the portion and the tubular body, and a tubular body for supplying air to the secondary air flow path between the tubular portion and the tubular portion of the wind box; In addition to being supplied to the bellows, the air for combustion of the blower of the air supply means is also supplied to the air-exhaust portion of the tubular body for air supply of the air--5-201231901 (for example, 'Reference Patent Document 1) » [PRIOR ART DOCUMENT] [Patent Document 1] Japanese Laid-Open Patent Publication No. 2002-13704 (FIG. 1 to FIG. 3) [Problems to be Solved by the Invention] Conventional Furnace Heating Device The burner portion located outside the bellows of the burner has a large diameter of a double tube shape, so that there is a disadvantage that the design space becomes large, and the combustion air from the blower is used. In addition to being supplied to the bellows, it is also supplied to the portion of the tubular body for air supply that is located outside the bellows. Therefore, the structure for supplying combustion air to the burner is complicated, and there is a setting outside the furnace. The disadvantage of increasing space. In other words, the space outside the furnace is used as a work space for maintenance, etc., and it is desired to use various types of equipment arranged in the space for various purposes. In addition to the complicated construction, 'there is a large installation space outside the furnace, and it is hoped to be compact. In the furnace heating burner, the ratio of the primary air amount flowing through the primary air flow path to the secondary air amount flowing through the secondary air flow path is adjusted 'to sufficiently purge the gas from the fuel flow path The fuel enters -6 - 201231901, and the primary combustion is performed at the same time, and the secondary combustion state is performed in the secondary air, or the material discharged from the fuel flow path is burned with a small amount of primary air, and the secondary air is sufficiently recharged twice. In the combustion state, the above state is switched depending on the state of use, and in order to adjust the state of formation of the flame, it is desirable to make the ratio of the amount of the primary air flow path to the secondary air flow that flows through the secondary air flow path in the past. In order to adjust the ratio of the primary air amount flowing through the airflow path to the secondary flow flowing through the secondary air flow path, the combustion device for furnace heating generally supplies the combustion flow to the windbox from the blower. Or a flow path for supplying combustion air to the empty tubular body from the blower, and having a damper for adjusting the air volume, and if the damper is provided, The external installation space is further developed. The present invention has been made in view of the above circumstances, and an object thereof is to provide a heating combustion apparatus capable of circulating primary air flow passages and secondary air flow passages through a secondary air flow passage. In addition, the ratio of the structure is also simplified, and the installation space outside the furnace is reduced. [Means for Solving the Problem] The furnace heating apparatus of the present invention is connected to the furnace in a state of being communicated with the passage hole formed in the furnace wall. The bellows of the wall is provided with a cylindrical tubular portion on the side of the furnace wall, and is supplied into the combustion air from the combustion air, and is formed into a double tubular elongated burner, and the combustion gas is burned in the central portion. The combustion burns the fire and the air is adjusted. -Secondary air volume, air supply, and if the step becomes large - the amount of air in the furnace is adjusted, the flame is formed by means of a fuel flow path in which the gas fuel is distributed in 201231901, and the air is circulated in the outer peripheral portion thereof. a primary air flow path is provided in a state of penetrating the back wall portion, wherein the back wall portion is located away from the furnace wall side; and the burner front end portion is between the outer circumferential surface and the inner circumferential surface of the tubular portion a state in which the air in the bellows is used as a secondary air flow path through which the secondary air flows, and is located inside the tubular portion: the primary air flow path provided in the burner is at the front end of the burner The burner is provided in a state in which the air in the bellows enters from the rear end portion and flows toward the front end side, and the burner is formed in a state in which the front end portion is made larger than the other portions of the burner: a method for adjusting a ratio of a primary air amount flowing through the primary air flow path to a secondary air amount flowing through the secondary air flow path Burning may be its rear wall portion of the bellows to the longitudinal direction thereof is supported freely adjust the position of the burner in the supporting means. In other words, a part of the combustion air supplied to the wind box from the combustion air supply means enters from the rear end portion of the primary air flow path located in the wind box, and flows as a primary air to the primary air flow path to be combusted. A part of the combustion air supplied to the wind box by the air supply means flows as secondary air between the outer circumferential surface of the front end portion of the burner located in the wind box and the inner circumferential surface of the tubular portion of the wind box. The secondary air flow path flows through the fuel flow path, and the gaseous fuel discharged from the tip end of the fuel flow path is mixed with primary air and secondary air to be combusted. Adjusting the position of the burner in the longitudinal direction of the back wall portion of the bellows by the amount of primary air flowing through the primary air flow path and the secondary air flow path of the above-mentioned secondary air flow path -8 - 201231901 The ratio of the amount of air is changed and adjusted so that the primary fuel is sufficiently burned once from the fuel flow path, and the secondary combustion is performed in the secondary combustion state, or a small amount of primary air is used in the fuel. When the gaseous fuel discharged from the flow path is combusted and the combustion state of the secondary combustion is performed with sufficient secondary air, the combustion state of the burner can be switched by switching according to the use state. In other words, by adjusting the position of the burner in the longitudinal direction with respect to the back wall portion of the bellows, the amount of inserting the tip end portion of the burner into the tubular portion of the bellows can be changed. When the amount in the cylindrical portion of the front end portion of the burner is changed, the flow resistance of the secondary air flow path formed between the outer circumferential surface of the front end portion of the combustor and the inner circumferential surface of the tubular portion of the wind box is increased or decreased. The ratio of the amount of primary air that is supplied to the primary air flow path to the primary air flow path and the amount of secondary air that flows through the secondary air flow path can be changed and adjusted. The portion located outside the bellows of the burner forms a fuel flow path for circulating the gaseous fuel, and since it does not need to form the primary air flow path, it becomes smaller in diameter, and the burner setting outside the furnace can be reduced. space. The ratio of the primary air amount flowing through the primary air flow path to the secondary air amount flowing through the secondary air flow path is changed and adjusted, and only the combustion air guide from the combustion air supply means is provided outside the furnace. Since the flow path is introduced to the wind box, it is possible to achieve a reduction in the structure for supplying the combustion air and a reduction in the installation space in which the structure for supplying the combustion air is provided outside the furnace. -9- 201231901 The burner is supported by the back wall portion of the bellows so as to be freely adjustable in the longitudinal direction thereof, and can be easily constructed, and the back wall portion of the bellows is cooled by air. It is possible to prevent the support means for supporting the burner in the back wall portion of the wind box from being damaged by the heat of combustion, and it is possible to maintain the position for a long time and to adjust the position of the burner in the longitudinal direction. The secondary air flow path formed between the primary air flow passing through the primary air flow path provided at the front end portion of the burner and the inner circumferential surface of the tubular portion of the wind turbine case at the outer peripheral surface of the burner front end portion The ratio of the amount of secondary air to be circulated is adjusted, and in the windbox, the flow path for guiding the combustion air supplied from the combustion air supply means to the primary air flow path is guided and guided to a flow path of the secondary air flow path, and equipped in the wind box: a damper that adjusts the amount of air guided by the flow paths in the wind box, and the configuration is such that it is in the wind box In order to form the zoning method of the flow path and the manner in which the damper is arranged in the bellows, the structure is complicated, and the damper is equipped in the bellows which is heated due to the heat of combustion, so the heat of combustion will be The damper heating causes damage, and it is difficult to use it well for a long time. According to the present invention, it is possible to provide a furnace heating and combustion apparatus capable of adjusting a ratio of a primary air amount flowing through a primary air flow path to a secondary air amount flowing through a secondary air flow path, and simplification of the structure can be achieved. Moreover, it is possible to reduce the installation space outside the furnace and to maintain good use for a long time. In the embodiment of the present invention, -10-201231901 is provided with a fuel adjusting means for changing the amount of supply of the gaseous fuel supplied to the burner, and the combustion air supply means is capable of freely changing the supply amount of the combustion air. . In other words, the fuel supply amount supplied to the burner is adjusted by the fuel adjusting means, and the supply amount of the combustion air supplied from the combustion air supply means is adjusted in accordance with the adjustment of the supply amount of the gaseous fuel. In the change adjustment, the amount of combustion of the gaseous fuel can be changed while maintaining the supply of the amount of air required to burn the supplied gaseous fuel. Further, by changing the amount of combustion of the gaseous fuel, the ratio of the primary air amount flowing through the primary air flow path to the secondary air amount flowing through the secondary air flow path is adjusted to switch: a large amount of gas is switched a fuel, a combustion state in which primary combustion is performed with sufficient primary air, a combustion state in which secondary combustion is performed in secondary air, and a combustion state in which secondary combustion is performed with a small amount of primary air while secondary combustion is performed with sufficient secondary air; or switching: A small amount of gaseous fuel is burned once with sufficient primary air, while a secondary combustion state of secondary combustion is performed, and a combustion state in which secondary combustion is performed with a small amount of primary air while secondary combustion is performed with sufficient secondary air It can be switched to various combustion states depending on the state of use. Thus, a combustion apparatus for furnace heating can be provided which can change the amount of combustion and can be switched to various combustion states. In the embodiment of the present invention, the burner is formed to include a tubular body for supplying the fuel flow path in a state in which the entire length thereof is provided, and the position of the tubular body is -11 - 201231901 a cylindrical flow path forming body that forms the primary air flow path with the tubular body and forms the secondary air flow path with the tubular portion of the wind box; and a flow path forming body disposed in the flow path forming body A flame shield is formed between the rear end portion and the tubular body for supplying fuel, and an air flow hole for primary air entering is formed. In other words, the burner is formed by covering the front end portion of the tubular body for fuel supply forming the fuel flow path by the flow path forming body. Further, the flame-retardant plate is disposed between the rear end portion of the flow path forming body and the tubular body for fuel supply, and is formed with an air flow hole for primary air entry. Therefore, when the amount of gas combustion is small, The flame shield can be used to keep the flame and the gaseous fuel burns well. When the amount of gas combustion is large, the barrel of the bellows can be flame-proof and a large amount of gaseous fuel can be burned. When the amount of combustion of the gas is large or small, the flame-proof type can be changed and the gaseous fuel can be burned. Therefore, the gas combustion amount can be changed in a large range to be burned well, in other words, it can be made in a large range. In the embodiment of the present invention, the combustion amount of the gas can be changed, and the combustion amount of the gas can be changed in a wide range. In the embodiment of the present invention, the burner is fitted in a tubular shape that is freely movable in the longitudinal direction thereof. The burner support body is disposed on the back wall portion of the wind box, and is provided with a positioning body 'the positioning body is freely switchable: a positioning state for positioning the burner and a release state for releasing the burner for the burner support; 12-201231901 The burner supporting means, wherein the burner support body supports the burner so as to be movable in a longitudinal direction thereof, and means for positioning the movement of the burner in the longitudinal direction by the positioning body . In other words, in the state in which the positioning body is switched to release the position of the burner, the cylindrical burner support provided in the rear wall portion of the bellows is moved and adjusted in the longitudinal direction of the burner. The positioning body is in the order of the positioning state, and the position in the longitudinal direction of the burner, that is, the ratio of the primary air amount flowing through the primary air flow path to the secondary air amount flowing through the secondary air flow path is adjusted. As the positioning body, it is possible to form a simple structure in which a pressing bolt that is slidably coupled to the burner support body in the radial direction and that presses the outer surface of the burner is provided with a cylindrical burner support body and a positioning body. Since the burner can be moved and adjusted in the longitudinal direction, the simplification of the burner supporting means can achieve simplification of the overall structure. The tubular burner support is provided in the back wall portion of the bellows, and it can be easily performed even for the existing bellows. Therefore, the existing device can be modified to provide the burner support means. That is, the existing device is modified to the device of the invention. Thus, it is possible to provide a combustion apparatus for furnace heating, which can achieve simplification of the overall construction, and can also retrofit existing equipment and retrofit the apparatus of the invention. In the embodiment of the present invention, a preheating means for preheating the combustion air supplied from the combustion air supply means by the exhaust gas discharged from the furnace is provided. -13- 201231901 In other words, the exhaust gas discharged from the furnace is preheated by the combustion air supplied from the combustion air supply means by the preheating means, so that the furnace can be efficiently heated to a high temperature. . In the case where the combustion air is preheated, although the temperature inside the bellows is higher, the back wall portion of the bellows is cooled by the outside air, so that even if the combustion air is preheated, it is possible to prevent: the burner The support means 'supported by the back wall portion of the bellows is damaged by the combustion heat, and can be maintained for a long time: the burner is positionally adjusted in the longitudinal direction. Thus, a combustion apparatus for furnace heating can be provided which can efficiently heat the furnace to a high temperature. [Embodiment] Hereinafter, a combustion apparatus for furnace heating according to the present invention will be described based on the drawings. As shown in Fig. 1, the furnace heating apparatus of the present embodiment shows a case where heating as the glass melting furnace G is used as an example. In other words, the glass melting furnace G is provided with a melting furnace 2 below the inside of the furnace body 1, and a furnace heating burner, and an furnace space above the melting tank 2 to form a lateral direction (that is, a horizontal direction). The state of the flame F causes the gaseous fuel to burn. As shown in Fig. 2, the furnace heating apparatus includes a burner B, a bellows 4, and a blower fan K. The elongated burner B formed in a double tubular shape is provided with a gas at the center. The fuel flow path R through which the fuel flows is provided with a primary air flow path A 1 for circulating primary air at the outer peripheral portion thereof. -14- 201231901 The wind box 4 communicates with the flame passage hole of the furnace wall 1A of the furnace main body 1. The state of 3 is connected to the furnace wall; the blower fan Κ supplies the combustion air to the wind box 4 through the air flow path 6, and serves as a combustion air supply means. The air flow path 6 is provided with a heat exchange unit 作为 as a preheating means for preheating the combustion air supplied from the air supply fan 以 by exhausting the exhaust gas discharged from the furnace, and preheating the combustion air to For example, 600 ° C, and let the temperature inside the furnace become, for example, 1 〇〇〇 ° C. The bellows 4 is formed in a cylindrical shape in which the entire posture is a horizontally inclined posture (that is, a posture extending horizontally), and the back portion is closed by the back wall portion 4 A located away from the furnace wall 1 A side, and the upper portion is formed in the upper portion. Inflow port 5 for combustion air. Further, the front end portion of the bellows 4 on the furnace wall side is formed as a cylindrical tubular portion T connected to the furnace wall 1A. Here, the tubular portion T is defined as a cylindrical portion between the outer surface of the furnace wall 1A of the bellows 4 and the point of the inflow port 5 of the combustion air which is closest to the outer surface of the furnace wall 1A. As shown in FIGS. 2 and 3, the burner B is provided in a state in which the back wall portion 4A of the bellows 4 is penetrated, and the front end portion thereof is formed on the outer peripheral surface thereof and the inner circumference of the tubular portion T of the bellows 4. A state in which the air in the wind box flows through the secondary air flow path A2 as the secondary air is formed between the surfaces, and is located inside the tubular portion T. Further, the front end portion of the burner B is formed to have a larger diameter than the other portions of the burner B. In the primary air flow path A1 of the burner B, the front end of the burner B is provided such that the air in the wind box enters from the rear end portion of the flow path forming body 8 described below and flows toward the front end side. In the case of the burner B, the burner B is also described with reference to the fourth embodiment and the fifth embodiment. The burner is configured to have a tubular shape for providing a fuel flow path R in a state in which the entire length is covered. The body 7 is disposed at a position covering the front end portion of the tubular body 7, forming a primary air flow path A between the tubular body 7, and forming a secondary air flow path A2 between the tubular body 7 and the tubular portion T of the wind box 4. The tubular flow path forming body 8 and the flame holding plate 9 disposed between the rear end portion of the flow path forming body 8 and the tubular body 7 and having the air flow hole S for primary air inlet are formed. The cylindrical body 7A on the proximal end side, the simplified body 7B fitted in the middle of the distal end of the cylindrical body 7A on the proximal end side, and the cylindrical body 7C connected to the intermediate cylindrical body 7B; At the rear end portion of the cylindrical body 7A on the proximal end side, a gaseous fuel for supplying gaseous fuel is connected. The cylindrical body 7B in the middle of the tube 1 , the cylindrical body 7C at the tip end, and the flame-proof plate 9 are integrally formed as a nozzle, and the cylindrical body 7B in the middle of the nozzle is fitted to the proximal end side in a screwed state. The cylinder 7A. The gas fuel supply pipe 1 is a flexible pipe that can be bent freely to allow the burner B to adjust its position in the longitudinal direction as will be described later. The flame shield 9 is an annular plate body 9A that is externally fitted to the tubular body 7C at the distal end of the tubular body 7, and its position is spaced apart along the outer circumferential direction of the plate body 9A. The plate body 9A is constituted by a support body 9B connected to the flow path forming body 8. The air flow hole S is formed between the adjacent support body 9B between the plate body 9A and the flow path forming body 8.
在板體9A的內周緣部與外周緣部，形成有：作爲保 焰板9的防止燃燒措施的冷卻用的使空氣流通的冷卻孔U -16- 201231901 ，在前端的筒體7C的板體9A附近，在周方向隔著間隔形 成有用來將氣體燃料朝一次空氣流路A1噴出的複數個噴 出孔1 4，使保焰性提升。 如第1圖所示，設置有’·用來將供給到燃燒器B的氣體 燃料供給量變更調整的作爲燃料調整手段的燃料調整閥V ，且送風風扇K，爲了變更調整燃燒用空氣的供給量，作 成可自由變更調整其旋轉速度。 設置有：與燃料調整閥V及送風風扇K連接，將其動 作進行控制的控制手段Η。該控制手段Η，根據在燃燒量 設定器W所設定的燃燒量，將與設定的燃燒量對應的量的 燃料供給到燃燒器Β，爲了將與設定的燃燒量對應的量的 燃燒用空氣供給到風箱4，而進行：燃料調整閥V的開度 調整及送風風扇Κ的速度調整。控制手段Η，具有CPU或記 憶體或通訊單元，將用來實施控制手段Η所具有的功能的 演算法儲存在記憶體。 如第2圖、第3圖及第6圖所示，爲了將流通於一次空 氣流路Α1的一次空氣量與流通於二次空氣流路Α2的二次 空氣量的比例進行變更調整，設置有：將燃燒器Β在其長 邊方向可自由調整位置地對於風箱4的背壁部4Α予以支承 的燃燒器支承手段D。 加以說明，讓燃燒器Β可在其長邊方向自由移動地嵌 合的筒狀的燃燒器支承體1 2，在藉由螺栓將在其外部附設 的環狀板部1 2 Α固定在背壁部4 Α的狀態，而設置於風箱4 的背壁部4A。作爲定位體可自由切換成：對於該燃燒器 -17- 201231901 支承體12將燃燒器定位的定位狀態、與解除定位的解除狀 態；對於燃燒器支承體螺合成可朝其直徑方向自由移動， 設置有將燃燒器的外面按壓的按壓螺栓13。 燃燒器支承手段D，以燃燒器支承體12將燃燒器B支 承爲在其長邊方向可自由移動，且構成以按壓螺栓13將燃 燒器B的長邊方向的移動予以定位的手段。 而雖然沒有舉例，而在燃燒器B的管狀體7的外面，在 其長邊方向隔著間隔附記有刻度，將該刻度作爲標準，確 認燃燒器B對於燃燒器支承體12的長邊方向的位置，藉此 能辨識燃燒器B的前端部對於風箱4的筒部T的插入量。 如第2圖所示，在本實施方式，舉例風箱4的筒部T的 內徑P爲200mm，燃燒器B的前端部的外徑，也就是流路形 成體8的外徑Q爲大致190mm，流路形成體8的長度Μ爲大 致1 1 0mm，管狀體7的前端的筒體7C的內徑Ν爲80mm，筒 體T的長度L爲大致2 00mm的情況，各部分的尺寸能分別變 更。 流路形成體8的外徑Q對於筒部T的內徑P的比例（Q/P )，設定爲0.8〜0.95較佳’而流路形成體8的長度Μ ’相 對於筒體Τ的內徑Ρ，設定爲其1/2〜3/4範圍的長度。 在本實施方式’氣體燃料的流量調整在50〜100 Nm3/H的範圍，與其配合，燃燒用空氣的流量調整在大致 600〜1200 Nm3/H的範圍，且藉由燃燒器B在長邊方向的 位置調整，如第2圖所示’在將燃燒器B的前端部的全體插 入到筒體T的內部的狀態、與如第3圖所示，將燃燒器B的 -18- 201231901 前端部的長度Μ的一半插入到筒體T的內部的狀態之間的 範圍’來變更將燃燒器Β的前端部插入到筒體τ的內部的 長度。 針對以上所述的爐加熱用燃燒裝置的運轉方法的一個 例子，在以下來說明。 當氣體燃料的供給量較少，也就是氣體燃料的流量較 少時’如第2圖所示，作爲將燃燒器Β的前端部的全體插入 到筒體Τ的內部的狀態，燃燒用空氣很難通過二次空氣流 路Α2流動，而使燃燒用空氣通過一次空氣流路八丨充分地 流動，且以保焰板9保焰而能使氣體燃料燃燒。 當氣體燃料的供給量較多，也就是氣體燃料的流量較 多時，如第3圖所示，作爲將燃燒器Β的前端部的長度Μ的 一半插入到筒部Τ的內部的狀態，燃燒用空氣容易通過二 次空氣流路Α1流動，使燃燒用空氣通過二次空氣流路Α2 充分地流動，且以風箱4的筒部Τ保焰而能使氣體燃料燃燒 〇 在該運轉方法，雖然因爲氣體燃料的供給量的多少而 讓火焰F的長度變化爲長短，而不論氣體燃料的供給量多 少，都能使火焰F的前端側的溫度高溫化。 [其他實施方式] 接著說明其他實施方式。 (1 )在上述實施方式，雖然舉例顯示將本發明的爐 加熱用燃燒裝置適用於玻璃熔解爐G的情況’而本發明的 -19- 201231901 爐加熱用燃燒裝置也能適用於锻造爐等的各種加熱爐。 (2) 在上述實施方式，雖然顯示由讓燃燒器B在其長 邊方向可自由移動地嵌合的筒狀的燃燒器支承體12與定位 體13，構成燃燒器支承手段D的情況’而燃燒器支承手段 D的具體構造可作各種變更。例如當燃燒器支承體12與燃 燒器B之間的摩擦很大的情況，則不一定需要定位體。作 爲定位體，可以利用：在燃燒器支承體12與燃燒器B之間 配置的樹脂、橡膠或其他增大摩擦係數的材料。 (3) 在上述實施方式，是舉例顯示，藉由燃燒器B在 長邊方向的位置調整，在將燃燒器B的前端部的全體插入 到筒體T的內部的狀態、將燃燒器B的前端部的長度Μ的一 半插入到筒體Τ的內部的狀態之間的範圍，來變更將燃燒 器Β的前端部插入到筒體Τ的內部的長度的情況，而也可 例如在將燃燒器Β的前端部的全體插入到筒體Τ的內部的 狀態、將燃燒器Β的前端部的只有前端部分插入到筒體Τ 的內部的狀態之間的範圍，來變更將燃燒器Β的前端部插 入到筒體Τ的內部的長度等，藉由燃燒器Β在長邊方向的 位置調整，變更將燃燒器Β的前端部插入到筒體Τ的內部 的範圍，可因應使用目的進行各種變更。 (4 )在上述實施方式，雖然舉例顯示將火焰通過孔3 形.成爲較爐內側更大直徑的狀態，而也可形成爲直圓筒狀 等，火焰通過孔3的形狀可作各種變更。在上述實施方式 ，雖然舉例顯示將火焰通過孔3形成在爐壁1 Α的情況，而 一般來說，可將形成火焰通過孔3的燃燒器瓦具備於爐壁 -20- 201231901 1 Α 〇 (5) 在上述實施方式，雖然舉例顯示對於爐主體丨配 設有一個燃燒器B的情況，而一般來說，對於爐主體1配設 有複數的燃燒器B。 在配設有複數的燃燒器B的情況，複數的燃燒器B的 燃燒量，不一定需要調整成相同，也能調整成以不同燃燒 量燃燒。 (6) 在上述實施方式，雖然舉例由板體9A與支承板 9B構成保焰板9的情況，而也可以藉由外周部的缺口或孔 部的形成而形成有空氣流通孔S的一片板狀體，來構成保 焰板9等，保焰板9的具體構造可以作各種變更。 [產業上的可利用性] 本發明的爐加熱用燃燒裝置，是可用於加熱：將玻璃 或金屬等的被熔解物熔解的熔解爐、或將鍛造件等的被加 熱物進行加熱的加熱爐等的各種爐。 【圖式簡單說明】 第1圖是爐加熱用燃燒裝置的槪略側視圖。 第2圖是燃燒器安裝部的局部剖面側視圖。 第3圖是燃燒器安裝部的局部剖面側視圖。 第4圖是燃燒器前端部的縱剖側視圖。 第5圖是燃燒器前端部的縱剖正視圖。 第6圖是燃燒器基端部的縱剖後視圖。 -21 - 201231901 【主要元件符號說明】 1 A :爐壁 3 :火焰通過孔 4 :風箱 4A :背壁部 7 :管狀體 8 :流路形成體 9 :保焰板 1 2 :燃燒器支承體 1 3 :定位體 A1 : —次空氣流路 A2:二次空氣流路 B :燃燒器 D :燃燒器支承手段 K :燃燒用空氣供給手段 R :燃料流路 5 :空氣流通孔 T :筒部 V :燃料調整手段 -22In the inner peripheral edge portion and the outer peripheral edge portion of the plate body 9A, a cooling hole U-16-201231901 for cooling the air as a flame-preventing prevention means for preventing the combustion means, and a plate body of the cylindrical body 7C at the tip end are formed. In the vicinity of 9A, a plurality of discharge holes 14 for discharging the gaseous fuel toward the primary air flow path A1 are formed at intervals in the circumferential direction to improve the flame resistance. As shown in Fig. 1, a fuel regulating valve V as a fuel adjusting means for changing the amount of supply of the gaseous fuel supplied to the burner B is provided, and the blower fan K is adjusted to adjust the supply of the combustion air. The amount can be changed and the rotation speed can be adjusted freely. There is provided a control means for connecting the fuel regulating valve V and the blower fan K and controlling the operation thereof. In the control means, the amount of fuel corresponding to the set amount of combustion is supplied to the burner 根据 according to the amount of combustion set in the combustion amount setter W, and the combustion air is supplied in an amount corresponding to the set amount of combustion. To the bellows 4, the opening adjustment of the fuel regulating valve V and the speed adjustment of the blower fan 进行 are performed. The control means 具有, having a CPU or a memory or a communication unit, and storing an algorithm for implementing the functions of the control means in the memory. As shown in FIG. 2, FIG. 3, and FIG. 6, in order to change and adjust the ratio of the primary air amount flowing through the primary air flow path 与1 and the secondary air amount flowing through the secondary air flow path Α2, A burner supporting means D for supporting the burner in the longitudinal direction thereof to support the back wall portion 4 of the bellows 4. In addition, the cylindrical burner support body 1 2 in which the burner 嵌合 can be freely moved in the longitudinal direction thereof is fixed to the back wall by the bolt, and the annular plate portion 1 2 附 attached to the outside thereof is fixed by bolts. The state of the portion 4 is set to the back wall portion 4A of the bellows 4. As the positioning body, the positioning state can be freely switched: for the burner -17-201231901, the positioning state of the support body 12 to position the burner and the release state of the release position; and the burner support body can be spirally combined to be freely movable in the diameter direction thereof. There is a pressing bolt 13 that presses the outside of the burner. The burner supporting means D supports the burner B so as to be movable in the longitudinal direction thereof by the burner supporting body 12, and constitutes means for positioning the movement of the burner B in the longitudinal direction by the pressing bolt 13. Further, although not exemplified, the outer surface of the tubular body 7 of the burner B is marked with a mark at intervals in the longitudinal direction thereof, and the scale is used as a standard to confirm the longitudinal direction of the burner B with respect to the burner support 12. The position by which the insertion amount of the front end portion of the burner B with respect to the tubular portion T of the bellows 4 can be recognized. As shown in Fig. 2, in the present embodiment, the inner diameter P of the tubular portion T of the bellows 4 is 200 mm, and the outer diameter of the front end portion of the burner B, that is, the outer diameter Q of the flow path forming body 8 is substantially 190 mm, the length Μ of the flow path forming body 8 is approximately 110 mm, the inner diameter Ν of the cylindrical body 7C at the tip end of the tubular body 7 is 80 mm, and the length L of the tubular body T is approximately 200 mm, and the size of each portion can be Change separately. The ratio (Q/P) of the outer diameter Q of the flow path forming body 8 to the inner diameter P of the tubular portion T is set to be 0.8 to 0.95, which is preferable, and the length 流 of the flow path forming body 8 is relative to the inside of the cylindrical body. The diameter is set to the length of the range of 1/2 to 3/4. In the present embodiment, the flow rate of the gaseous fuel is adjusted in the range of 50 to 100 Nm 3 /H, and the flow rate of the combustion air is adjusted to be in the range of approximately 600 to 1200 Nm 3 /H, and the burner B is in the longitudinal direction. The position adjustment is as shown in Fig. 2, in which the entire front end portion of the burner B is inserted into the inside of the tubular body T, and as shown in Fig. 3, the front end portion of the burner B is -18-201231901. The range in which the half of the length Μ is inserted into the inside of the tubular body T changes the length in which the front end portion of the burner 插入 is inserted into the inside of the tubular body τ. An example of the operation method of the furnace heating combustion apparatus described above will be described below. When the supply amount of the gaseous fuel is small, that is, when the flow rate of the gaseous fuel is small, as shown in Fig. 2, the combustion air is very large as the entire front end portion of the burner is inserted into the inside of the cylinder bore. It is difficult to flow through the secondary air flow path ,2, and the combustion air is sufficiently flowed through the primary air flow path, and the gas fuel is burned by the flame shield 9 to keep the flame. When the supply amount of the gaseous fuel is large, that is, when the flow rate of the gaseous fuel is large, as shown in Fig. 3, the half of the length Μ of the tip end portion of the burner is inserted into the inside of the tubular portion, and the combustion is performed. The air easily flows through the secondary air flow path ,1, so that the combustion air flows sufficiently through the secondary air flow path Α2, and the gas is combusted by the tubular portion of the wind box 4 to burn the gaseous fuel in the operation method. Although the length of the flame F is changed to be long or short because of the amount of supply of the gaseous fuel, the temperature of the front end side of the flame F can be increased regardless of the supply amount of the gaseous fuel. Other Embodiments Next, other embodiments will be described. (1) In the above embodiment, the combustion apparatus for heating the furnace of the present invention is applied to the case of the glass melting furnace G. The -19-201231901 furnace heating apparatus of the present invention can also be applied to a forging furnace or the like. Various heating furnaces. (2) In the above-described embodiment, the cylindrical burner support body 12 and the positioning body 13 that are movably fitted in the longitudinal direction of the burner B are shown to constitute the burner supporting means D. The specific configuration of the burner supporting means D can be variously changed. For example, when the friction between the burner support 12 and the burner B is large, the positioning body is not necessarily required. As the positioning body, a resin, rubber or other material having a friction coefficient which is disposed between the burner support 12 and the burner B can be utilized. (3) In the above-described embodiment, the position of the burner B in the longitudinal direction is adjusted, and the entire front end portion of the burner B is inserted into the inside of the tubular body T, and the burner B is placed. The length between the state in which the length Μ of the front end portion is inserted into the inside of the tubular body , is changed, and the length at which the front end portion of the burner 插入 is inserted into the inside of the tubular body 变更 is changed, and for example, the burner may be used. The front end portion of the burner is inserted into the inside of the tubular body, and the front end portion of the front end portion of the burner is inserted between the state of the inside of the tubular body , to change the front end portion of the burner. The length of the inside of the tubular body, etc., is adjusted by the position adjustment of the burner Β in the longitudinal direction, and the range in which the front end portion of the burner 插入 is inserted into the inside of the tubular body 变更 is changed, and various changes can be made depending on the purpose of use. (4) In the above embodiment, the flame passage hole 3 is formed to have a larger diameter than the inner side of the furnace, and may be formed into a straight cylindrical shape or the like. The shape of the flame passage hole 3 can be variously changed. In the above embodiment, although the case where the flame passage hole 3 is formed in the furnace wall 1 is shown as an example, in general, the burner tile forming the flame passage hole 3 can be provided on the furnace wall -20-201231901 1 Α 〇 ( 5) In the above embodiment, the case where one burner B is disposed in the furnace main body is exemplified, and in general, the burner main body 1 is provided with a plurality of burners B. In the case where a plurality of burners B are provided, the amount of combustion of the plurality of burners B does not necessarily need to be adjusted to be the same, and can be adjusted to be burned at different amounts of combustion. (6) In the above embodiment, the flame plate 9 is formed by the plate body 9A and the support plate 9B, and a plate having the air flow hole S may be formed by the formation of the notch or the hole portion of the outer peripheral portion. The body is configured to constitute a flame shield 9 or the like, and the specific structure of the flame shield 9 can be variously changed. [Industrial Applicability] The furnace heating apparatus according to the present invention is a heating furnace that can be used to heat a molten material such as glass or metal, or a heating furnace that heats a workpiece such as a forged product. Various furnaces, etc. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic side view of a combustion apparatus for furnace heating. Fig. 2 is a partial cross-sectional side view of the burner mounting portion. Figure 3 is a partial cross-sectional side view of the burner mounting portion. Fig. 4 is a longitudinal sectional side view of the front end portion of the burner. Fig. 5 is a longitudinal sectional front view of the front end portion of the burner. Figure 6 is a longitudinal sectional rear view of the base end of the burner. -21 - 201231901 [Explanation of main component symbols] 1 A : Furnace wall 3: Flame passage hole 4: Bellows 4A: Back wall portion 7: Tube body 8: Flow path forming body 9: Flame shield 1 2 : Burner support Body 1 3 : Positioning body A1 : - Secondary air flow path A2 : Secondary air flow path B : Burner D : Burner support means K : Combustion air supply means R : Fuel flow path 5 : Air flow hole T : Tube Part V: Fuel Adjustment Means-22