1289185 九、發明說明： 【發明所属之技術領域】 - 發明領域 本發明係有關於一種裝入桌上型瓦斯爐等瓦斯爐之瓦 • 5 斯爐用燃燒器。 發明背景 • 如第4圖所示，習知瓦斯爐用燃燒器有：構成為於環狀 燃燒器頭（1)上載置燃燒器蓋(2)者(參照專利文獻U。 1〇 形成於環狀燃燒器頭（1)之上面外周部之錐形座面（11) 係朝中心逐漸地增高，同時於該錐形座面〇1)上載置有燃燒 器蓋(2)之下面外周部之環狀壁(21)。 於燃燒器蓋(2)之前述環狀壁(21)之上端附近係貫通朝 外鈿之口（22)上升之焰口用通路(2〇)，同時於環狀壁(21) 15之下面形成湯汁回流溝(23)。 • 又，形成於燃燒器頭（1)上面之錐形座面（11)之内周部 (11〇)係相較於前述湯汁回流溝(23)或焰口用通路(2…之内 端朝更内側推出。 - 於此種瓦斯爐用職器巾，由於使焰口料路(20)傾斜 2〇為朝焰口（22)上升，因此燃氣會向上喷出，藉此，可生成適 合於鍋子等之加熱之向上姿勢之火焰(F)。 另方面，若自锅子溢出之湯汁(A)自焰口（22)流入焰 口用通路(2〇)内，則該湯汁(A)會受到燃燒器頭⑴上端之錐 形座面（11)之内周部（110)所阻播且導引至朝外側降低之錐 1289185 形座面（11)，並通過湯汁回流溝(23)而朝外部排出。 【專利文獻1】日本專利公開公報特開平11 一 63502號 公報 I：發明内容3 5 發明之揭示 發明所欲解決之課題 然而，於前述習知瓦斯爐用燃燒器中，當來自鋼子之 煮溢情形劇烈時，湯汁(A)會於附著在焰口用通路(20)之頂 面（25)之狀態下趁勢地流至其内端(200)，因此，會有跳過 10錐形座面（11)之内周部（110)而滲入燃燒器頭（1)之瓦斯通路 (13)之問題。 本發明係有鑑於前述問題而成者，目的係於r ^一種瓦 斯爐用燃燒器，其係於疊合狀態下將燃燒器蓋(2)載置於環 狀燃燒器頭（1)上，且於前述燃燒器頭貫通下游端開口 15 (130)朝前述燃燒器頭（1)與前述燃燒器蓋(2)間之疊合邊界 部開放之瓦斯通路（13)，並形成自焰口（22)朝中心側延伸且 接連至刖述瓦斯通路（13)之前述下游端開口（13〇)之焰口用 通路(20)，同時該焰口（22)係朝前述燃燒器蓋(2)之外面開放 者」中，藉由阻斷沿著焰口用通路(2〇)之頂面(25)流向燃燒 2〇器㈣之湯汁⑷岐其掉落至下方，防止湯汁(A)渗入燃 燒器頭（1)之瓦斯通路（13)内。 解決課題之手段 有關用以解決前述問題之申請專利範圍第】項之發明 之解决方法係、别述瓦斯通路⑼之下游端開口（⑽)形成 1289185 於前述焰口（22)之下端上方，且於前述下游端開口（13〇)之 徑向外側設置自前述焰口用通路(2〇)之頂面（25)垂下之垂 下壁(24)」者。 若藉由前述解決方法，則自焰口（22)流入焰口用通路 5 (20)且沿著其頂面（25)流向燃燒器内部之湯汁(A)會到達設 置於前述頂面(25)之垂下壁(24)，如此一來，由於前述垂下 壁(24)相對瓦斯通路（13)之下游端開口（13〇)設置於徑向外 側，因此湯汁(A)會被前述垂下壁(24)攔住，同時導引至下 方並自其下端掉落至焰口用通路(2〇)之下部，此時，由於瓦 1〇斯通路（13)之下游端開口（130)係形成於焰口（22)之下端上 方，因此前述掉落之湯汁會在流入瓦斯通路(13)之下游 端開口（130)前自該下游端開口（13〇)下方之焰口（22)朝外部 流出。 有關申請專利範圍第2項之發明若為「如申請專利範圍 第1項之瓦斯爐用燃燒器，其中用以積存自前述垂下壁(24) 所掉落之湯汁(A)之湯汁襯盤(41)係介於前述燃燒器頭0) 一月述燃燒器蓋(2)間之疊合邊界部且可自由拆裝」者，則 於卸下燃燒器蓋(2)時，積存湯汁(A)且可自由拆裝之湯汁襯 盤(41)會露出。 2〇發明之效果 本發明係具有下述特有之效果。 、若藉由有關申請專利範圍第1項之發明，則自焰口（22) /入之芴汁(A)會在流入形成於燃燒器頭之瓦斯通路（13) 下游^開口（130)如自該下游端㈤口（13〇)下方之焰口㈤ .1289185 朝外部流出，因此該湯汁(A)不會滲入燃燒器頭（丨)之瓦斯通 路（13)内。 又，由於湯汁(A)不會滲入燃燒器頭⑴之瓦斯通路（13) 内’因此可輕易地進行燃燒器頭（1)之内部清掃，同時不用 5擔心前述瓦斯通路（13)内或面對其上游端之瓦斯噴嘴會被 湯汁(A)堵塞。 於申請專利範圍第2項之發明中，由於卸下燃燒器蓋(2) 時積存湯汁（A)且可自由拆裝之湯汁襯盤(41)會露出，因 此’除了前述效果外，亦具有可輕易地進行丟棄積存在湯 10汁襯盤(41)之湯汁(A)的作業。 圖式簡單說明 第1圖係具有有關本發明第1實施形態之瓦斯爐用燃燒 器（B)之瓦斯爐之主要部分截面圖。 第2圖係有關本發明第2實施形態之瓦斯爐用燃燒器（B) 15 之主要部分截面圖。 第3圖係有關本發明第3實施形態之瓦斯爐用燃燒器（B) 之主要部分截面圖。 第4圖係習知例之說明圖。 C實方式;J 2〇發明之較佳實施形態 以下參照附圖說明本發明之較佳實施形態。 [第1實施形態] 如第1圖所示，有關本發明第1實施形態之瓦斯爐用燃 燒器（B)係於自開設在瓦斯爐用之瓦斯爐頂板(3)上的燃燒 .1289185 器用開口（31)朝上方突出之態樣下設置。又，於瓦斯爐頂板 (3)上，火架（4)係配置於包圍瓦斯爐用燃燒器（B)之位置。 瓦斯爐用燃燒器（B)係具有由環狀燃燒器頭（1)與連設 於其下方之混合管（5)所構成之燃燒器本體(6)，同時於疊合 5狀態下在燃燒器頭（1)上載置具有與燃燒器頭（1)相同外徑 之燃燒器蓋(2)。 混合管（5)係作成由同心狀之内•外筒（51)(52)所構成之 雙重筒部（53)連設於喉道部（50)之下游端之結構。 連設於混合管（5)上方之燃燒器頭（1)係具有由連接於 10 前述雙重筒部(53)上端之内•外筒（16)(15)所構成之雙重筒 部（17)。於外筒（15)與内筒（16)之相互間，結合兩者之結合 片（a)係於周方向以預定間距設置。 前述外筒（15)與内筒（16)相互之間隙係構成接連至混 合管（5)内之瓦斯通路（13)，且其下游端開口（130)係面對燃 燒器蓋(2)之下面，藉此，構成為前述瓦斯通路（13)朝燃燒 器頭（1)與燃燒器蓋(2)間之疊合邊界部開放。 於構成燃燒器頭（1)之雙重筒部（17)之外筒（15)上下方 向之中間，外周凸緣（18)係朝瓦斯爐頂板(3)上伸出，同時 於該外周凸緣（18)之上面外周部突設環狀之立起壁（14)，且 20 於該立起壁（14)與外筒（15)間形成環狀凹部（19)。 立起壁（14)之上面係形成為朝中心降低之錐形面 (140)，且該錐形面（14〇)之外端緣（141)係位於外筒（15)之上 端（151)下方，即，位於雙重筒部（π)上端之瓦斯通路（13) 之下游端開口（130)係位於後述焰口（22)之下端上方，藉 1289185 此，蓄積於環狀凹部（19)之湯汁(A)會在流入下游端開口 (130)前自位於該下游端開口（13〇)下方之立起壁（14)之外端 緣(141)朝外部溢出。 前述載置於燃燒器頭（1)上之燃燒器蓋(2)係形成為倒 5碗狀，同時朝周方向以預定間距排列之複數焰口（22)係朝其 外周部開放，又，於燃燒器頭（1)與燃燒器蓋(2)之疊合邊界 部中，自焰口（22)接連至前述瓦斯通路（13)之下游端開口 (130)之領域係構成焰口用通路(2〇)。 於燃燒器蓋(2)之下面突設有定位筒（26)，該定位筒（26) 10係嵌入設置於燃燒器頭（1)中央部之雙重筒（π)之内筒 (16)，同時於前述雙重筒（17)之徑向外側（瓦斯通路(13)之下 游端開口（130)之徑向外侧）突設有與定位筒（26)呈同心狀之 環狀垂下壁(24)。 於此種瓦斯爐用燃燒器中，若使瓦斯爐用燃燒器（B)燃 15燒，則供給自混合管（5)之燃氣會以接連為燃燒器頭（1)之瓦 斯通路（Π)—焰口用通路(20)—燃燒器蓋（2)之焰口（22)之 路徑來流動且於焰口（22)形成火焰(F)，藉此，可加熱鍋子 (9)。 又，若自加熱中之锅子(9)產生煮溢物，則湯汁(a)會自 20 焰口（22)流入焰口用通路(20)且沿著頂面（25)流向燃燒器頭 (1)之瓦斯通路（13)側，如此一來，由於在燃燒器蓋(2)之頂 面（25)設置有相對瓦斯通路（13)之下游端開口（130)位於徑 向外側之垂下壁(24)，因此湯汁(A)會被前述垂下壁(24)攔 住並導引至下方，且自垂下壁(24)之下端掉落、積存於構成 1289185 焰口用通路(20)之底部之環狀凹部（ip)，如此一來，如前所 述，由於瓦斯通路（13)之下游端開口（130)係位於焰口（22) 之下端上方，因此，積存於環狀凹部（19)之湯汁(A)會在流 入瓦斯通路（13)之下游端開口（130)側前自位於該下游端開 5 口（130)下方之焰口（22)之下端（外周凸緣（18)之外端緣（141)) 朝外部溢出，藉此，可防止湯汁(A)流入瓦斯通路（13)。 又，由於湯汁(A)不會滲入燃燒器頭（1)之瓦斯通路(13) 内，因此可輕易地進行燃燒器頭（1)之内部清掃，更不用擔 心瓦斯通路（13)内或面對其上游端之瓦斯喷嘴會被湯汁 10 堵塞。 [第2實施形態] 第2圖係有關第2實施形態之瓦斯爐用燃燒器（B)之主 要邓分截面圖，於該瓦斯爐用燃燒器中，除了燃燒器蓋(2) 之結構外，其他係構成與前述第1實施形態相同。 15 燃燒器蓋(2)係自嵌入設置在燃燒器頭（丨）中央部之内 筒（16)之定位筒(26)上端呈水平地伸出環狀平板(2乃，同時 於該環狀平板(27)上設置有朝上㈣放之複數辅助焰口 (270)。又，於環狀平板(27)之下面有沿著外周之環狀壁(28) 垂下，同時於該環狀壁(28)上，多數朝下方開放之狹縫(29) 2〇係並列設置於周方向該狹縫(29)之外端係構成焰口 ㈤。又，環狀壁(28)係載置於燃燒器頭⑴之外周凸緣⑽ 之上面外周所設置之立起壁（14)上。 於燃燒器蓋(2)之環狀平板(27)上突設有相對構成辦燒 器頭⑴之雙重筒⑼之外筒（15)位於徑向外側之垂:壁 1289185 (24)。於此種瓦斯爐用燃燒器中，即使流入焰口（22)之湯汁 (A)沿著焰口用通路(20)之頂面（25)(環狀平板(27)之下面）移 動至瓦斯通路（13)側，該湯汁(A)亦會被前述相對外筒（15) 位於控向外側之垂下壁（24)攔住並掉落至環狀凹部（丨9)(焰 5 口用通路(20)之下部），此時，由於位於燃燒器頭（1)中央部 之外琦（15)之上端（151)，即，瓦斯通路（13)之下游端開口 (130)係位於焰口（22)之下端上方，因此，積存於形成在燃 燒器頭（1)之外周凸緣（18)之環狀凹部（19)的湯汁(A)會在流 入瓦斯通路(13)前自焰口（22)朝外部排出。 10 又’如第2圖之假想線所示，亦可於形成在燃燒器頭（1) 之外周凸緣（18)之環狀凹部（19)安裝湯汁襯盤(41)且可自由 拆裝’藉此’構成為使湯汁襯盤(41)介於燃燒器頭（丨)與前 述燃燒器蓋(2)間之疊合邊界部，若依此構成，則自垂下壁 (24)所掉落之湯汁(A)可積存於湯汁襯盤(41)，又，由於卸 15下燃燒器蓋(2)時可自由拆裝之湯汁襯盤(41)會露出，因此 可輕易地丟棄積存在該湯汁襯盤(41)之湯汁(A)。 [第3實施形態] 第3圖係有關第3實施形態之瓦斯爐用燃燒器之主 要部分截面圖，該瓦斯爐用燃燒器係自上方將燃燒器蓋(2) 20嵌合於金屬板製燃燒器本體之燃燒器頭（1)部。又，於該瓦 斯爐用燃燒器中，瓦斯通路（13)之下游端開口（130)亦形成 於焰口（22)之下端上方，同時於焰口用通路(2〇)之頂面（25) 突設有相對瓦斯通路（13)之下游端開口（13〇)位於徑向外側 之垂下壁(24)，因此，沿著焰口用通路(2〇)之頂面（25)流向 12 1289185 瓦斯通路（13)側之湯汁(A)在流動途中會被垂下壁(24)攔住 並掉落至焰口用通路(20)之底部，然後自焰口（22)朝外部排 出。 【圖式簡單說明1 5 第1圖係具有有關本發明第1實施形態之瓦斯爐用燃燒 器（B)之瓦斯爐之主要部分截面圖。 第2圖係有關本發明第2實施形態之瓦斯爐用燃燒器（B) 之主要部分截面圖。 第3圖係有關本發明第3實施形態之瓦斯爐用燃燒器（B) 10 之主要部分截面圖。 第4圖係習知例之說明圖。 【主要元件符號說明】 1…燃燒器頭 17, 53…雙重筒部 2···燃燒器蓋 18…外周凸緣 3···瓦斯爐頂板 19…環狀凹部 4…火架 20···焰口用通路 5…混合管 21，28…環狀壁 6···燃燒器本體 22"·焰口 9…锅子 23…湯汁回流溝 11…錐形座面 24···垂下壁 13…瓦斯通路 25…頂面 14…立起壁 26…定位筒 15, 52···外筒 27···環狀平板 16,51···内筒 29…狹縫 13 1289185 3l···燃燒器用開口 41…湯汁概盤 50…喉道部 110···内周部 130···下游端開口 140…錐形面 14l···外端緣 151···上端 200···内端 270…輔助焰口 A…湯汁 a…結合片 B···瓦斯爐用燃燒器 F…火焰1289185 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a burner for a gas stove of a gas furnace such as a table gas furnace. BACKGROUND OF THE INVENTION As shown in Fig. 4, a conventional gas burner burner includes a burner cover (2) placed on an annular burner head (1) (see Patent Document U. The conical seating surface (11) of the upper outer peripheral portion of the burner head (1) is gradually increased toward the center, and the outer peripheral portion of the burner cover (2) is placed on the conical seating surface 1). Annular wall (21). In the vicinity of the upper end of the annular wall (21) of the burner cover (2), a passage for the flame mouth (2〇) which rises toward the opening (22) of the outer cymbal is formed, and is formed under the annular wall (21) 15 at the same time. Soup back to the ditch (23). • Further, the inner peripheral portion (11〇) of the conical seating surface (11) formed on the burner head (1) is compared with the inner end of the soup return groove (23) or the flame outlet passage (2... Pushing out on the inside. - In the case of such a gas stove, the gas is blown upwards by tilting the flame path (20) 2 to the flame outlet (22), thereby generating a suitable gas. The flame (F) of the upward posture of the heating of the pot, etc. On the other hand, if the soup (A) overflowing from the pot flows into the flame passage (2〇) from the flame mouth (22), the soup (A) will be subjected to The inner peripheral portion (110) of the conical seating surface (11) at the upper end of the burner head (1) is blocked and guided to the outwardly lowered cone 1289185 shaped seating surface (11) and passed through the soup return groove (23). [Explanation of the invention] [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. When the steel is boiled, the soup (A) will flow to the top surface (25) of the flame passage (20). The end (200), therefore, has the problem of skipping the inner peripheral portion (110) of the 10 conical seating surface (11) and infiltrating the gas passage (13) of the burner head (1). The present invention is directed to the foregoing problems. The main purpose is to use a burner for a gas burner, which is placed on the annular burner head (1) in a stacked state, and is connected to the burner head. a downstream end opening 15 (130) opens toward the gas passage (13) of the overlapping boundary between the burner head (1) and the burner cover (2), and is formed to extend from the flame port (22) toward the center side and successively To the flame port passage (20) of the downstream end opening (13) of the gas passage (13), and the flame port (22) is open to the outside of the burner cover (2), by means of resistance Break along the top surface (25) of the passageway (2〇) to the broth (4) of the burning 2 〇 (4), and drop it to the bottom to prevent the broth (A) from seeping into the gas passage of the burner head (1) ( 13) The means for solving the problem relates to the solution of the invention of the scope of the patent application for solving the above problems, and the downstream end of the gas passage (9) The port ((10)) forms 1289185 above the lower end of the flame port (22), and is disposed on the radially outer side of the downstream end opening (13〇) from the lower wall of the top surface (25) of the flame path (2〇). (24). By the above-mentioned solution, the broth (A) flowing from the flame port (22) into the flame port passage 5 (20) and flowing along the top surface (25) to the inside of the burner reaches the setting The hanging wall (24) of the top surface (25), such that the lower hanging wall (24) is disposed radially outward with respect to the downstream end opening (13〇) of the gas passage (13), so the soup (A) It will be stopped by the aforementioned hanging wall (24), and guided to the lower side and dropped from the lower end to the lower part of the flame passage passage (2〇). At this time, due to the downstream end opening of the tile 1 〇 passage (13) (130) ) is formed above the lower end of the flame port (22), so that the previously dropped soup will flow from the downstream end opening (130) to the flame opening (23) below the downstream end opening (130). Flowing out to the outside. The invention relating to the second aspect of the patent application is "the burner for a gas burner according to the first application of the patent scope, wherein the soup lining for storing the soup (A) dropped from the hanging wall (24)" The disc (41) is interposed between the burner head 0) and the superimposed boundary between the burner caps (2) in January, and is freely detachable. When the burner cover (2) is removed, the soup is accumulated. The juice (A) and the freely disassemblable soup pan (41) will be exposed. 2. Effect of the Invention The present invention has the following specific effects. According to the invention of claim 1 of the patent application, the self-venting (22) / incoming mash (A) will flow in the downstream of the gas passage (13) formed in the burner head. The flame port (five) .1289185 below the (5) port (13〇) of the downstream end flows out to the outside, so the soup (A) does not penetrate into the gas passage (13) of the burner head (丨). Moreover, since the soup (A) does not penetrate into the gas passage (13) of the burner head (1), the internal cleaning of the burner head (1) can be easily performed without worrying about the aforementioned gas passage (13) or The gas nozzle facing its upstream end will be blocked by the soup (A). In the invention of claim 2, since the soup syrup (A) is stored and the detachable soup lining (41) is exposed when the burner cover (2) is removed, "in addition to the foregoing effects, There is also an operation of easily discarding the soup (A) accumulated in the soup 10 juice liner (41). BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the main part of a gas burner having a gas burner for a gas furnace (B) according to a first embodiment of the present invention. Fig. 2 is a cross-sectional view showing the main part of a gas burner (B) 15 for a gas furnace according to a second embodiment of the present invention. Fig. 3 is a cross-sectional view showing the main parts of a gas burner for a gas furnace (B) according to a third embodiment of the present invention. Fig. 4 is an explanatory view of a conventional example. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. [First Embodiment] As shown in Fig. 1, a gas burner (B) for a gas furnace according to a first embodiment of the present invention is used for combustion from a gas furnace top plate (3) for gas furnaces. The opening (31) is set to protrude upward. Further, on the gas stove top plate (3), the fire frame (4) is disposed at a position surrounding the gas burner (B). The gas burner (B) has a burner body (6) composed of an annular burner head (1) and a mixing tube (5) connected thereto, and is combusted in the state of superposition 5 The burner head (1) carries a burner cover (2) having the same outer diameter as the burner head (1). The mixing pipe (5) is constructed such that a double tubular portion (53) composed of concentric inner and outer cylinders (51) (52) is connected to the downstream end of the throat portion (50). The burner head (1) connected to the mixing pipe (5) has a double cylinder (17) formed by an inner/outer cylinder (16) (15) connected to the upper end of the double cylinder portion (53). . The outer sheets (15) and the inner tube (16) are combined with each other at a predetermined interval in the circumferential direction. The gap between the outer cylinder (15) and the inner cylinder (16) constitutes a gas passage (13) connected to the mixing tube (5), and the downstream end opening (130) faces the burner cover (2). Hereinafter, the gas passage (13) is opened to the overlapping boundary portion between the burner head (1) and the burner cover (2). In the middle of the up-and-down direction of the outer cylinder (15) of the double cylinder portion (17) constituting the burner head (1), the outer peripheral flange (18) projects toward the gas furnace top plate (3) while the outer peripheral flange (18) The upper peripheral portion of the upper portion protrudes from the annular rising wall (14), and an annular recess (19) is formed between the rising wall (14) and the outer cylinder (15). The upper surface of the rising wall (14) is formed as a tapered surface (140) which is lowered toward the center, and the outer edge (141) of the tapered surface (14) is located at the upper end (151) of the outer cylinder (15). Below, that is, the downstream end opening (130) of the gas passage (13) located at the upper end of the double cylinder portion (π) is located above the lower end of the flame port (22) to be described later, and the soup accumulated in the annular recess (19) is borrowed by 1289185. The juice (A) overflows to the outside from the outer edge (141) of the rising wall (14) located below the downstream end opening (13〇) before flowing into the downstream end opening (130). The burner cover (2) placed on the burner head (1) is formed into an inverted bowl shape, and the plurality of flame ports (22) arranged at a predetermined interval in the circumferential direction are open toward the outer periphery thereof, and In the overlapping boundary portion between the burner head (1) and the burner cover (2), the field connected from the flame port (22) to the downstream end opening (130) of the gas passage (13) constitutes a passage for the flame port (2〇) ). A positioning cylinder (26) is protruded from below the burner cover (2), and the positioning cylinder (26) 10 is embedded in the inner cylinder (16) of the double cylinder (π) disposed at the central portion of the burner head (1). At the same time, on the radially outer side of the double cylinder (17) (the radial outer side of the downstream end opening (130) of the gas passage (13), an annular downward wall (24) concentric with the positioning cylinder (26) is protruded. . In such a gas burner burner, if the gas burner is burned with a burner (B), the gas supplied from the mixing tube (5) will be connected to the gas passage of the burner head (1). The flame path (20) - the path of the flame mouth (22) of the burner cover (2) flows and forms a flame (F) at the flame mouth (22), whereby the pot (9) can be heated. Further, if the cooking pot (9) generates a boiled material from the heating, the soup (a) flows from the 20 flame port (22) into the flame port passage (20) and flows along the top surface (25) to the burner head (1). On the side of the gas passage (13), since the top surface (25) of the burner cover (2) is provided with a downstream wall opening (130) opposite to the gas passage (13) on the radially outer side ( 24), so the soup (A) is stopped by the hanging wall (24) and guided to the lower side, and falls from the lower end of the hanging wall (24) and accumulates in the ring forming the bottom of the 1289185 flame mouth passage (20). The recessed portion (ip), as described above, since the downstream end opening (130) of the gas passage (13) is located above the lower end of the flame port (22), the soup accumulated in the annular recess (19) The juice (A) will be at the lower end of the flame port (22) located below the mouth (130) at the downstream end before the downstream end opening (130) side of the gas passage (13) (the outer end of the outer peripheral flange (18) The edge (141)) overflows to the outside, thereby preventing the soup (A) from flowing into the gas passage (13). Moreover, since the soup (A) does not penetrate into the gas passage (13) of the burner head (1), the internal cleaning of the burner head (1) can be easily performed, not to mention the gas passage (13) or The gas nozzle facing its upstream end will be blocked by the soup 10. [Second Embodiment] Fig. 2 is a cross-sectional view showing a main part of a burner for a gas burner (B) according to a second embodiment, in which a burner for a gas burner has a structure other than a burner cover (2). The other system configuration is the same as that of the first embodiment described above. 15 The burner cover (2) is horizontally extended from the upper end of the positioning cylinder (26) of the inner cylinder (16) which is embedded in the central portion of the burner head (丨), and is annularly The plate (27) is provided with a plurality of auxiliary flame ports (270) placed upward (four). Further, under the annular plate (27), there is an annular wall (28) along the outer circumference, and the annular wall (at the same time) 28), most of the slits (29) which are open downwards are arranged side by side in the circumferential direction. The outer end of the slit (29) constitutes a flame port (5). Further, the annular wall (28) is placed on the burner. a rising wall (14) provided on the outer circumference of the upper periphery of the outer peripheral flange (10) of the head (1). A double cylinder (9) opposite to the burner head (1) is protruded from the annular flat plate (27) of the burner cover (2). The outer cylinder (15) is located radially outward: wall 1289185 (24). In such a gas burner, even the soup (A) flowing into the flame port (22) is along the flame path (20). The top surface (25) (below the annular plate (27)) is moved to the side of the gas passage (13), and the soup (A) is also placed on the outer side of the opposite outer cylinder (15) (24) Stop and drop to the annular recess (丨9) (the lower part of the passage (20) of the flame 5 port), at this time, because it is located at the upper end (151) of the gas (15) outside the burner head (1), that is, downstream of the gas passage (13) The end opening (130) is located above the lower end of the flame port (22), so that the soup (A) accumulated in the annular recess (19) formed in the outer peripheral flange (18) of the burner head (1) will flow in. The gas passage (13) is discharged from the flame port (22) toward the outside. 10 Further, as shown by the imaginary line in Fig. 2, it may be formed in the annular recess of the outer peripheral flange (18) of the burner head (1). (19) installing a soup liner (41) and being freely disassembled 'by this' is configured such that the soup liner (41) is interposed between the burner head (丨) and the aforementioned burner cover (2) If the boundary portion is configured as described above, the soup (A) dropped from the hanging wall (24) can be accumulated in the soup liner (41), and freely removed when the burner cover (2) is unloaded 15 Since the detached soup pan (41) is exposed, the broth (A) accumulated in the broth pan (41) can be easily discarded. [Third Embodiment] Fig. 3 is a third embodiment. Sectional view of the main part of the gas burner The burner for the gas burner is fitted with the burner cover (2) 20 from the upper part to the burner head (1) of the burner body of the metal plate. Further, in the burner for the gas furnace, the gas passage (13) The downstream end opening (130) is also formed above the lower end of the flame port (22), and the downstream end opening (13〇) of the gas passage (13) is protruded from the top surface (25) of the flame passage passage (2). The lower vertical wall (24) located on the radially outer side, therefore, flows along the top surface (25) of the flame passage passage (2) to the 12 1289185 gas passage (13) side of the soup (A) which is suspended from the wall during the flow. (24) Stop and drop to the bottom of the flame passage passage (20), and then discharge it toward the outside from the flame port (22). BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the main part of a gas burner having a burner (B) for a gas furnace according to a first embodiment of the present invention. Fig. 2 is a cross-sectional view showing the main parts of a gas burner for a gas furnace (B) according to a second embodiment of the present invention. Fig. 3 is a cross-sectional view showing the main parts of a gas burner (B) 10 for a gas furnace according to a third embodiment of the present invention. Fig. 4 is an explanatory view of a conventional example. [Description of main components] 1... burner head 17, 53... double cylinder 2... burner cover 18... outer peripheral flange 3... gas furnace top plate 19... annular recess 4... fire frame 20··· Flame passage passage 5... Mixing pipe 21, 28... Annular wall 6··· Burner body 22" Flame port 9... Pan 23... Soup backflow groove 11... Conical seat surface 24···Down wall 13... Gas passage 25... top surface 14... standing wall 26... positioning cylinder 15, 52 · outer cylinder 27 · annular plate 16 , 51 · inner cylinder 29 ... slit 13 1289185 3l · burner opening 41 ...the soup plate 50...throat portion 110···inner peripheral portion 130···the downstream end opening 140...the tapered surface 14l···the outer end edge 151···the upper end 200···the inner end 270...the auxiliary Flame mouth A... Soup a... Combine piece B··· Gas burner with burner F... Flame
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