1359927 九、發明說明： K：發明所屬之技術領域3 發明領域 本發明係有關於一種具有在設置於燃燒器本體上之燃 5 燒器頭之周面開口之上下2段焰孔之瓦斯爐用燃燒器。 發明背景 φ 以往，此種瓦斯爐用燃燒器已知的是，燃燒器頭由下 頭構件與上頭構件之2構件所構成，並且燃燒器本體與下頭 1〇 構件之間規劃成下段焰口，下頭構件與上頭構件之間規劃 成上段焰孔（參照如專利文獻1)。又，此種燃燒器中，係將 下段焰孔之其_一個作為藉由點火開關點火之點火焰孔， • 且藉往點火焰孔點火，使火移轉到其他下段焰孔與上段焰 孔以使之點火。 ， 15 然而，設置於一般瓦斯爐用燃燒器之燃燒器頭係由單 φ 一構件所構成’像上述習知例由2構件構成之燃燒器頭係較 為特殊的情況。因此，使用者在清掃燃燒器頭後，恐有在 燃燒器本體僅没置下頭構件而忘記設置上頭構件之虞。其 中，上述習知例中’即使未設置上頭構件，會往由在燃燒 20器本體與下頭構件之間規劃成之下段焰孔之其中之一所構 成之點火焰孔進行點火後，火焰延燒到其他下段焰孔。然 後，在沒有規劃成上段焰孔之上頭構件之狀態下，火焰由 下段焰孔延燒到上方不正常所放出之上段焰孔用混合氣， 產生逆火或燃燒不良。 5 出，因此上段焰口用之混合氣會變得無法往點火焰％ 給，而點火焰口不能點火。因此可避免因為在忘記設置: 頭構件之狀態下點火而產生逆火或燃燒不良。 又，當將乾部設置於上頭構件時，若忘記設置上 件，可能會在點火開關與下頭構件之間進行不正常之b 放電後，於下段焰口點火。㈣於此，若將㈣設置^ 7件，即使忘岐置上頭構件，由於係、妹部與點火開 之間進行火花放電，因此可防止在不正常之火花放電下 於下段焰口點火。 又本發月中’點火焰口宜朝前述下頭構件之周面向 斜-。如此，只要上段焰口用之混合氣往上方之流動 不受上頭齡_•，職合氣不會流人朝下方傾斜之點火 焰口。因此，可更確實防止在忘記設置上㈣件之狀態下 往點火焰口點火。 （ 又’點火焰口由在下頭構件穿孔之孔形成時，要防止 由點火焰口往下頭構件與上頭構件之間的空間之逆火，點 火1 口必須在2_以下。可是，焰孔為2mm左右時，當點 火口 ISIS下頭構件之清洗而被水滴封住時，水滴會變得 無法抽出。此種情況下，在相對於τ頭構件與上頭構件之 間的空間之點火焰口之連通部，設置溝寬小於點火焰口之 孔徑之流人溝，並且上段細狀混合氣經由流入溝而流 入點火焰口的話’由於可藉溝寬小之流入溝防止逆火因 此可加大點火心之孔徑，且容易抽出水，更為有利。 【資 較佳實施例之詳細說明 參照第1圖’ 1係表示瓦斯爐本體、2為覆蓋瓦斯爐本體 1上面之頂板、3為瓦斯爐用燃燒器。頂板2有開口設置燃燒 器用開口2a。又’頂板2上載置有包圍燃燒器用開口 2a且省 略圖示之火架。而且’載置於火架上之調理容器可由燃燒 器3進行加熱。 燃燒器3具有：插通於燃燒器用開口 2a之燃燒器本體 4、及燃燒器本體4上之燃燒器頭5。燃燒器頭5之周面係如 第2圖所示，上下2段的焰孔6U、6L分別留有周方向之間隔 且有多數開口’又，點火焰孔61在周方向1處開口。其中’ 在與火架之複數火架爪相合之周方向複數處未設有上段焰 孔6U，以防止火焰接觸到火架爪而不完全燃燒。因此，下 段焰孔6L之個數稍多於上段焰孔6U之個數。但是，各下段-焰孔6L之面積遠小於各上段焰孔6U之面積，因此，下段焰 孔6L之總面積小於上段焰孔6U之總面積。 燃燒器本體4係由外側筒體41與中間筒體42與内側筒 體43之内外3重筒體所構成。又，燃燒器頭5具有：嵌合於 燃燒器本體4之中間筒體42之筒部5la懸掛設置於内周之環 狀下頭構件51 '及嵌合於燃燒器本體4之内側筒體43之筒部 52a懸掛於内周之環狀上頭構件52。下頭構件51之上面外周 部豎立設有供上頭構件52就位之上環狀壁53，並且於該上 環狀壁53形成有多數存有周方向間隔之構成上段焰孔阳之 溝。而且’該雙溝之上端係由上頭構件52所封閉，藉此在 下頭構件5，1與上頭構件52之間規劃成上段焰孔6U。下頭構 1359927 件51之下面外周部懸掛就位於燃燒器本體4之外側筒體41 之上端部之下環狀壁54，並且於該下環狀壁54形成有多數 存有周方向之間隔之構成下段焰口 6L之溝。而且，該等溝 之下端係由外側筒體41之上端部所封閉，藉此在燃燒器本 5 體4與下頭構件51之間規劃成下段焰孔6L。 燃燒器3更具有：連通燃燒器本體4之中間筒體42與内 侧筒體43之間的空間之上段焰口 6U用之第1混合管7U、及 連通燃燒器本體4之外側筒體41與中間筒體42之間的空間1359927 IX. Description of the invention: K: Technical field to which the invention belongs 3 FIELD OF THE INVENTION The present invention relates to a gas furnace having a lower two-stage flame hole above the peripheral opening of a burner 5 disposed on the burner body burner. BACKGROUND OF THE INVENTION In the past, such burners for gas burners are known in that the burner head is composed of two members of a lower head member and an upper head member, and a lower flame port is planned between the burner body and the lower head member. An upper stage flame hole is planned between the lower head member and the upper head member (refer to Patent Document 1). Moreover, in such a burner, one of the lower flame holes is used as a point flame hole ignited by the ignition switch, and the fire hole is ignited to move the fire to the other lower flame hole and the upper flame hole. To make it ignite. However, the burner head provided in the combustor for a general gas burner is composed of a single φ member. The burner head system composed of two members as in the above-described conventional example is particularly special. Therefore, after cleaning the burner head, the user may forget to set the upper member only when the burner body is not placed. In the above conventional example, even if the upper member is not provided, the flame is ignited by a point flame hole which is formed by one of the lower flame holes between the burner body and the lower member. Extend to the other lower flame holes. Then, in the state where the head member is not planned as the upper flame hole, the flame is extended from the lower flame hole to the upper portion of the flame hole for the upper portion of the flame hole to generate a backfire or poor combustion. 5 out, so the mixture used in the upper part of the flame will become unable to give the point flame %, and the point flame port will not ignite. Therefore, it is possible to avoid backfire or poor combustion due to ignition in the state of forgetting to set: the head member. Further, when the trunk portion is placed on the upper member, if the upper member is forgotten, the abnormal b discharge may be performed between the ignition switch and the lower member, and then the lower portion of the flame may be ignited. (4) In this case, if (4) is set, even if the upper member is forgotten, the spark discharge between the system and the sister and the ignition is prevented, so that the ignition of the lower flame is prevented under abnormal spark discharge. In the middle of the month, the point of the flame should be inclined toward the circumference of the aforementioned lower member. In this way, as long as the flow of the mixture gas from the upper flame is upwards is not subject to the upper age _•, the occupational gas will not flow to the ignition flame that tilts downward. Therefore, it is possible to more surely prevent the ignition of the flame at the point in the state of forgetting to set the upper (four) pieces. (In addition, when the flame port is formed by the hole pierced by the lower member, it is necessary to prevent the backfire from the point flame port to the space between the lower member and the upper member. The ignition port must be below 2_. However, the flame When the hole is about 2 mm, when the head member of the ignition port ISIS is cleaned and sealed by water droplets, the water droplets may not be extracted. In this case, at the point of space between the head member and the upper member. The connecting portion of the flame port is provided with a flow groove having a groove width smaller than the aperture of the point flame port, and the fine mixed gas flowing into the point flame port through the inflow groove is 'to prevent backfire due to the small groove inflow groove. It is more advantageous to increase the diameter of the ignition core and to easily extract water. [For a detailed description of the preferred embodiment, refer to Fig. 1] 1 shows the gas furnace body, 2 is the top plate covering the upper surface of the gas furnace body 1, and 3 is A burner for a gas burner. The top plate 2 has an opening 2a for opening the burner. Further, the top plate 2 has a fire holder that surrounds the burner opening 2a and is omitted, and the conditioning container placed on the fire holder can be used by the burner. 3 into The burner 3 has a burner body 4 inserted through the burner opening 2a and a burner head 5 on the burner body 4. The peripheral surface of the burner head 5 is as shown in Fig. 2, and the upper and lower sections are The flame holes 6U, 6L are respectively spaced apart in the circumferential direction and have a plurality of openings 'again, the point flame hole 61 is open at the circumferential direction 1. Where 'there is no multiple in the circumferential direction of the plurality of fire frame claws of the fire frame There is a flame hole 6U in the upper section to prevent the flame from coming into contact with the flame carrier claws and not completely burning. Therefore, the number of the lower flame holes 6L is slightly larger than the number of the upper flame holes 6U. However, the area of each lower segment-flame hole 6L is far. The area of the lower flame holes 6L is smaller than the total area of the upper flame holes 6L. The burner body 4 is composed of the outer cylinder 41 and the inner cylinder 42 and the inner cylinder 43 inside and outside 3 The burner head 5 has a cylindrical portion 51a that is fitted to the intermediate cylinder 42 of the burner body 4 and is suspended from the annular lower head member 51' disposed on the inner circumference and fitted to the burner body 4. The cylindrical portion 52a of the inner cylindrical body 43 is suspended from the inner circumferential annular upper member 52. The lower member 51 The upper peripheral portion is erected with an annular wall 53 for the upper member 52 to be positioned, and the upper annular wall 53 is formed with a plurality of grooves which are circumferentially spaced to form the upper portion of the flame hole. The upper end is closed by the upper member 52, whereby an upper flame hole 6U is planned between the lower head member 5, 1 and the upper head member 52. The lower outer peripheral portion of the lower head member 1359927 member 51 is located at the burner body 4 An annular wall 54 is formed below the upper end portion of the outer cylindrical body 41, and a groove defining a lower portion of the flame port 6L is formed in the lower annular wall 54. Further, the lower end of the groove is from the outer side. The upper end portion of the cylinder 41 is closed, whereby a lower flame hole 6L is planned between the burner body 5 and the lower head member 51. The burner 3 further has a first mixing tube 7U for connecting the upper portion of the intermediate cylinder 42 and the inner cylindrical body 43 of the burner body 4 to the upper portion of the flame port 6U, and an outer cylinder 41 and the intermediate portion of the communicating burner body 4. Space between the cylinders 42
之下段焰口 6L用之第2混合管7L。而且，由面臨第1與第2 10之各混合管7U、7L之上游端配置之第丨與第2各噴嘴8U、乩 喷出之燃料氣體與一次空氣在各混合管7u、7L混合，並且 供給到來自各混合管7U、7L之混合氣對應之各焰口 6U、 6L。即’來自第1混令管7u之混合氣經由燃燒器本體4之中 間筒體42與内側筒體43之間的空間以及下頭構件51與上頭 15構件52之間的/空間，而供給到上段焰口 611，來自第2混合管The second mixing tube 7L for the lower flame port 6L. In addition, the fuel gas and the primary air which are discharged from the first and second nozzles 8U facing the upstream ends of the first and second mixing tubes 7U and 7L are mixed with the primary air in the respective mixing tubes 7u and 7L, and Each of the flame ports 6U and 6L corresponding to the mixed gas from the respective mixing tubes 7U and 7L is supplied. That is, the mixture from the first mixing tube 7u is supplied via the space between the intermediate cylinder 42 of the burner body 4 and the inner cylinder 43 and the space between the lower member 51 and the upper head member 52. To the upper flame 611, from the second mixing tube
7L之混合氣經由燃燒本體4之外側筒體41與中間筒體 之間的空間以及外側筒體41與下頭構件51之間的空間而供 給到下段焰口 6L。 如此，由於混合氣由個別之遇合管7U、7L以個別之路 20 、徑供給至上段與下段之各焰口 6lJ、g m ，因此可由在上段焰 口 6U與下段焰口 6L兩者燃燒之強 強火狀態到僅在下段焰〇 燃燒之—小_火狀態，在廣範圍内調節火力 又，燃燒器4之外側筒體奶芍古丄斗 尺有由其上段部外周朝下方 延伸之裙部41a。而且覆蓋頂板2夕邮认 败2之燃燒器用開D2a之蓋環9 9 外插於祿部4la，並且可藉由蓋環9防止來自燃燒器開口2a 之湯汁進入。 又燃燒器3附設有：在點火焰口 61點火之點火開關 1〇、及由在與點火開關10之配置位置在燃燒器頭5之周方向 為相反側之位置檢測下段焰口 6L之火焰之熱電偶構成之火 焰檢測元件11。燃燒器3更附設有位於由燃燒器頭5所包圍 之燃燒器内周空間且用以檢測調理容器之溫度之鍋底溫度 檢測器12。 然而，本實施型態之燃燒器3與燃燒器頭5由單一構件 構成之瓦斯爐用燃燒器不同，由於係由下頭構件51與上頭 構件52之2構件構成燃燒器頭5，因此在清掃燃燒器頭3後， 會有僅將下頭構件51設置於燃燒器本體4上而忘記設置上 頭構件52之虞。而且，即使在忘記設置上頭構件52之情況 下，當往點火焰口 61點火時，藉火焰朝下段焰口 61之延燒， 火焰檢測元件11會檢測出火湾，圖示省略之電磁安全間保 持在問問狀態，而由第1與第2之喷嘴su、8L持續喷出燃燒 氣體。而且，不會被上頭構件52限劊，而火焰延燒到朝上 方不正常放出之上段焰口 6U用之混合氣，產生逆火或燃燒 不良·》 因此，在本實施型態中，於下頭構件51設置與點火開 關10對向之部55，並且點火焰口 61在乾部55之下側之下 頭構件51之周面部分開口，且，設置成與下頭構件η與上 頭構件52之間的空間連通，使流動於該空間之上段焰口 6仏 用t之混合氣的一部份流入點火焰口 .61.。 在此，在;記設置上頭構件52之狀態了，由於上段焰 口 6U用之混合氣不會爻到上頭構件52之限制而朝上方放 出，因此上段焰口 6U用之混合氣無法供給至點火焰口 61， 點火焰口無法點火。因此，可防止因為在忘記設置上頭構 件5 2之狀態下點火，火焰檢測元件丨丨檢測火焰，由喷嘴8 υ、 8L持續噴出燃燒氣體，而火焰延燒到朝上方不正常放出之 上段焰口6U用之混合氣，產生逆火或燃燒不良。以下，進 一步詳述點火焰口 61。 本實施型態中，係於下頭構件51之上環狀壁53穿孔設 置有孔，且該孔朝突出設置於該上環狀壁之靶部55之下側 周面部分開口，並藉由該孔形成點火焰口 61。其中，點火 焰口 61係形成為朝第1頭部構件51之周面、即上環狀壁53之 周面朝下方傾斜。 又，相對於下頭構件51與上頭構件52之間的空間之點 火焰口 61之連通口之上環狀壁53之部分53a，係比形成為上 段焰口 6U之溝衰狀壁53之部在_更春徑方_向_肉_方_延4申。 而且，在上環狀壁53之前述部分5_3^_，如第1、_3圖所示，形-成流入溝61a ’並且上段焰口 61用之混合氣經由流入溝61a而 流入點火焰口 61。流入溝61a之溝寬比上段焰口 61之孔徑 小，例如，相對於上段焰口 61之孔徑為4mm，流入溝61a之 溝寬為1.2mm。 只要上段焰口 61用之混合氣往上方之流動不受上頭構 件52限制，混合氣則不會流入本實施型態之;朝下方傾斜之 點火焰口61。又，藉由朝形成上環狀壁53之流入溝61a之徑 1359927 方向内方之延伸部分5 3 a，也可限制上段焰口 6 U用之混合氣 往點火焰口 61流入。因此，可更確實防止在忘記設置上頭 構件52之狀態下朝點火焰口 61點火。 又，如本實施型態，點火焰口 6U係由穿孔於下頭構件 5 51之孔形成時，當該扎直接連通於下頭構件51與上頭構件 52之間的空間時，除了可防止由點火焰口 61往該空間之逆 火之外，點火焰口 61之孔徑必須在2mm以下。可是，當孔 徑為2mm左右時，當因清洗下頭構件51而水滴封住點火焰 口 61時，會變得無法將水抽出。相對於此，本實施型態中， 10由於在相對於下頭構件51與上頭構件52之間的空間之點火 焰口 61之連通部，設置溝寬小於秽火焰口 61之孔徑之流入溝 61a，因此，即使點火焰口 61之孔徑大如4mm左右，而可容 易检水’也可藉流入溝613防止逆火，。又，即使流入溝 6Ia之溝寬狹小，也可輕易將溝内之水吹閘，不會有問題。 15 以上係參照圖示說明本發明之實施型態，但本發明並 不受限於此。例如，前述實施型態令，係由各別之混合管 7U、7L將混合氣供給至上段焰孔6U與下段焰孔6L，但亦可 由共通1個之混合管將混合氣供給到上段焰孔6〇與下段焰 孔6L。又，前述實施型態中，係於豎立設置於下頭構件51 20之上面外周部之上環狀壁53形成為上段焰σ6υ之溝、靶部 55及點火焰口 61之孔，但亦可將形成為上段焰口 6υ之溝之 環狀壁懸掛設置於上頭構件52之下面外周部。此時，只要 於與點火開關10之配置部相合之環狀壁的部分形成缺口， 並於下頭構件51之上面豎立設置突起部，而可與該缺口部 12 1359927The mixture of 7L is supplied to the lower flame port 6L via the space between the outer cylinder 41 and the intermediate cylinder of the combustion body 4 and the space between the outer cylinder 41 and the lower member 51. In this way, since the mixture gas is supplied to the respective flame ports 6lJ, gm of the upper and lower sections by the individual passages 20 and 7L by the individual passages 20, 7L, it can be burned by the strong flame state of both the upper flame port 6U and the lower flame port 6L. Only in the lower-flame-burning-small-fire state, the firepower is adjusted over a wide range, and the outer side of the burner 4 has a skirt 41a extending downward from the outer periphery of the upper section. Further, the burner covering the top plate 2 and the burner 2 is externally inserted into the sill portion 4a, and the broth from the burner opening 2a can be prevented from entering by the cover ring 9. Further, the burner 3 is provided with an ignition switch 1 ignited at the point flame port 61, and a pyroelectric flame for detecting the flame of the lower flame port 6L at a position opposite to the circumferential direction of the burner head 5 at the position where the ignition switch 10 is disposed. The flame detecting element 11 is constructed. The burner 3 is further provided with a pan temperature detector 12 located in the inner peripheral space of the burner surrounded by the burner head 5 for detecting the temperature of the conditioning vessel. However, the burner 3 of the present embodiment is different from the burner for a gas burner in which the burner head 5 is composed of a single member, and since the burner member 5 is constituted by two members of the lower member 51 and the upper member 52, After the burner head 3 is cleaned, there is a possibility that only the lower head member 51 is placed on the burner body 4 and the upper member 52 is forgotten. Further, even in the case where the upper member 52 is forgotten, when the flame port 61 is ignited, the flame detecting element 11 detects the fire bay by the flame burning toward the lower flame port 61, and the electromagnetic safety room omitted in the figure is kept at In the inquiry state, the combustion gases are continuously ejected by the first and second nozzles su and 8L. Moreover, it is not restricted by the upper member 52, and the flame is burned to the upper side, and the mixture gas for the upper flame port 6U is not normally discharged, causing backfire or poor combustion. Therefore, in the present embodiment, the lower end The member 51 is disposed opposite to the ignition switch 10, and the point flame port 61 is open at a peripheral portion of the head member 51 below the lower side of the trunk portion 55, and is disposed to be combined with the lower head member η and the upper member 52. The space between the two is connected to the flame port 6 of the upper part of the space, and a part of the mixture of t flows into the flame port. Here, in the state in which the upper member 52 is disposed, since the mixture gas for the upper flame port 6U is not released to the upper member 52 and is discharged upward, the mixture for the upper flame port 6U cannot be supplied to the point. At the flame port 61, the flame port cannot be ignited. Therefore, it is possible to prevent the flame detecting element from detecting the flame in the state in which the upper member 52 is forgotten to be set, the flame is continuously ejected from the nozzles 8 υ, 8L, and the flame is burned to the upper side and the upper flame port 6U is not normally discharged. Use a mixture of gas to produce backfire or poor combustion. Hereinafter, the point flame port 61 will be further described in detail. In this embodiment, a hole is formed in the annular wall 53 of the lower head member 51, and the hole is opened to a portion of the lower peripheral surface of the target portion 55 of the upper annular wall. This hole forms a point flame port 61. The ignition flame port 61 is formed to be inclined downward toward the circumferential surface of the first head member 51, that is, the circumferential surface of the upper annular wall 53. Further, the portion 53a of the annular wall 53 above the communication port of the flame port 61 with respect to the space between the lower head member 51 and the upper member 52 is formed as the portion of the groove-shaped wall 53 formed as the upper portion of the flame port 6U. In the _ more spring path side _ to _ meat _ party _ extension 4 application. Further, the aforementioned portion 5_3^_ of the upper annular wall 53 is formed into the groove 61a' as shown in Figs. 1, _3, and the mixed gas for the upper flame port 61 flows into the point flame port 61 via the inflow groove 61a. The groove width of the inflow groove 61a is smaller than the diameter of the upper portion flame port 61. For example, the hole diameter with respect to the upper portion of the flame port 61 is 4 mm, and the groove width of the inflow groove 61a is 1.2 mm. As long as the flow of the mixture gas for the upper flame port 61 is not restricted by the upper member 52, the mixture does not flow into the present embodiment; the flame port 61 is inclined downward. Further, by forming the extending portion 5 3 a in the direction of the diameter 1359927 of the inflow groove 61a of the upper annular wall 53, the mixture of the upper flame port 6 U can be restricted from flowing into the point flame port 61. Therefore, it is possible to more surely prevent the ignition of the point flame port 61 in a state where the upper member 52 is forgotten to be set. Further, as in the present embodiment, when the dot flame port 6U is formed by the hole pierced in the lower head member 51, when the wire is directly communicated with the space between the lower head member 51 and the upper head member 52, it is prevented. In addition to the backfire of the point flame port 61 to the space, the aperture of the point flame port 61 must be 2 mm or less. However, when the hole diameter is about 2 mm, when the point flame port 61 is sealed by water droplets by cleaning the lower head member 51, the water cannot be extracted. On the other hand, in the present embodiment, 10 is provided with an inflow groove having a groove width smaller than the aperture of the 秽 flame port 61 due to the communication portion of the flame port 61 at a point of space with respect to the space between the lower head member 51 and the upper head member 52. 61a, therefore, even if the aperture of the point flame port 61 is as large as about 4 mm, the water can be easily detected, and the backflow 613 can be used to prevent backfire. Further, even if the groove width of the inflow groove 6Ia is narrow, the water in the groove can be easily blown off without problems. 15 or more The embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto. For example, in the above embodiment, the mixed gas is supplied to the upper flame hole 6U and the lower flame hole 6L by the respective mixing pipes 7U, 7L, but the mixed gas may be supplied to the upper flame hole by a common mixing pipe. 6〇 and the lower flame hole 6L. Further, in the above-described embodiment, the annular wall 53 is formed as a hole of the upper flame σ6υ, the target portion 55, and the point flame port 61, which is erected on the upper outer peripheral portion of the lower member 5120, but may be An annular wall formed as a groove of the upper flame port 6 is suspended from the outer peripheral portion of the lower surface of the upper member 52. At this time, as long as a portion of the annular wall that is in contact with the arrangement portion of the ignition switch 10 is formed with a notch, and a projection is provided on the upper surface of the lower member 51, the notch portion can be provided with the notch portion 12 1359927
嵌合’且於該突起部形成靶部μ與點火焰口 61即可 又，亦可將與點火開關10對向之靶部設置於上頭構件 52。但是’此種情況下’若忘記設置上頭構件52，在點火 開關10與下頭構件51之間可能會進行不正f之火花放電， 而朝下段焰口 6L點h在此，若在遠離下頭構件51之下段 焰口 6L之點火焰口 61附近部分設置第2靶部，且忘記設置上 頭構件52之情況下，若在點火開_與第2料之間進行火The target portion μ and the point flame port 61 may be formed in the protrusion portion, and the target portion facing the ignition switch 10 may be provided in the upper member 52. However, if the upper member 52 is forgotten in this case, a spark discharge of the misalignment f may occur between the ignition switch 10 and the lower member 51, and the point h of the lower flame port 6L is here, if it is farther from the lower end When the second target portion is provided in the vicinity of the flame port 61 at the lower portion of the flame port 6L of the member 51, and the upper member 52 is forgotten, if the fire is opened between the ignition and the second material,
花放電，則可作到某種程度地防止朝點火焰口乩點火。可 10 15When the flower is discharged, it can be prevented to some extent to ignite the flame. 10 15
是’在設置有上賴件52之狀訂，麟衫决部與點火 開關10之間，而是要在設置於上頭構件52之靶部與點火開 關10之間確實地進行火花放電時，必須將第2靶部與點火開 關10之間的距離（放電間隔）設定在設置於上碩構i牛之靶: 與點火開關10之間的放電間隔2倍以上。因此，忘呓机置上 頭構件52時，並非點火開關1〇與第2靶部之間，只可铲在點 火開關10與下段焰口 6L之附近部分之間“行火花玫電 在下段焰口點火。 2〇 對此，如上述實施型態，若將靶部55設置於下頭構件 51 ’即使在忘記設置上頭構件52之情況下，由於 里在·乾》部 55與點火開關10之間進行火花放電，可確實 止因不正常 之火花放電而於下段焰口 6L點火，更為有利。 t囷式簡單說明3 第1圖係本發明之實施型態之燃燒器之截面圖 第2圖係實施型態之燃燒器之立體圖。 第3圖係實施型態之燃燒器之下頭構件之要苦 ^平面圖。 13 【主要元件符號說明】 1…瓦斯爐本體’ 54...下環狀壁 2…頂板 2a...燃燒器用開口 3.. .瓦斯爐用燃燒器 4.. .燃燒器本體 41.. .外側筒體 41a…裙部 42…中間筒體 43.. .内側筒體 5.. .燃燒器頭 51…下頭構件 52…上頭構件 51¾ 52a_.·筒部 53…上環狀壁 53a...上環狀壁之部分 55.. .乾部 61.. .點火焰口 61a…流入溝 6U…上段媳口 6L…下段焰口 7U...第1混合管 7L...第2混合管 8U.··第1噴嘴 8L...第2喷嘴 9…蓋環 10.. .點火開關 11…火焰檢測元件 12…銷底溫度檢測器When the spark is placed between the target portion of the upper member 52 and the ignition switch 10, the spark is disposed between the target portion of the upper member 52 and the ignition switch 10, The distance (discharge interval) between the second target portion and the ignition switch 10 must be set to be twice or more the discharge interval between the target and the ignition switch 10. Therefore, when the head member 52 is placed on the forcing device, it is not between the ignition switch 1〇 and the second target portion, and only the vicinity of the ignition switch 10 and the lower portion of the flame port 6L can be shoveled. In this case, as in the above embodiment, if the target portion 55 is provided to the lower head member 51', even if the upper member 52 is forgotten, the inner portion 55 and the ignition switch 10 are provided. It is more advantageous to perform the spark discharge to ignite the lower flame port 6L due to the abnormal spark discharge. The simple description of the t囷 type 3 Fig. 1 is a cross-sectional view of the burner of the embodiment of the present invention. A perspective view of a burner of the implementation type. Fig. 3 is a plan view of the head member of the burner of the embodiment. 13 [Description of main components] 1... Gas furnace body '54... Lower annular wall 2... top plate 2a... burner opening 3: burner for gas burner 4. burner body 41.. outer cylinder 41a... skirt 42... intermediate cylinder 43.. inner cylinder 5 .. burner head 51... lower member 52... upper member 513⁄4 52a_.·cylinder 53...upper ring The wall 53a...the upper annular wall portion 55..the trunk 61..the point flame port 61a...the inflow groove 6U...the upper section mouth 6L...the lower section flame port 7U...the first mixing tube 7L...the first 2 mixing tube 8U.··first nozzle 8L...second nozzle 9...cover ring 10... ignition switch 11...flame detecting element 12...pin bottom temperature detector
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