JPH109516A - Premixing gas burner of flat flame type - Google Patents
Premixing gas burner of flat flame typeInfo
- Publication number
- JPH109516A JPH109516A JP15795496A JP15795496A JPH109516A JP H109516 A JPH109516 A JP H109516A JP 15795496 A JP15795496 A JP 15795496A JP 15795496 A JP15795496 A JP 15795496A JP H109516 A JPH109516 A JP H109516A
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- Prior art keywords
- mixed gas
- plate
- gas chamber
- combustion
- sensor
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、元混合式の面状
火炎型バーナーに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an original mixing type planar flame burner.
【０００２】[0002]
【従来の技術】元混合式の面状火炎型バーナーとして、
例えば図２に示した構造の元混合式面状火炎型バーナー
１００Ｂが知られている。図２において、太線で示す箇
所は構成部材の肉厚部分であって、一般に耐熱性の金属
材料、例えばステンレス鋼板などによって構成されてい
る部分であり、ハッチングを施した箇所は混合ガスを通
過させるための導穴１Ａを多数有する燃焼板１の断面部
分である。2. Description of the Related Art As an original mixing type planar flame type burner,
For example, an original mixing type planar flame type burner 100B having the structure shown in FIG. 2 is known. In FIG. 2, a portion indicated by a bold line is a thick portion of a component member, which is generally a portion formed of a heat-resistant metal material, for example, a stainless steel plate, and a hatched portion allows a mixed gas to pass therethrough. Section of the combustion plate 1 having a large number of guide holes 1A.
【０００３】すなわち、このバーナーにおいては、燃料
ガスと、この燃料ガスの燃焼に必要な量の酸素を含む空
気との混合ガスＧ１が、燃焼板１の背面側の混合ガス室
２に供給されて多数の導穴１Ａを通り抜け、外側の燃焼
面１Ｂに平面状に分布する火炎Ｇ２を形成して燃焼する
ように仕組まれている。That is, in this burner, a mixed gas G1 of a fuel gas and air containing an amount of oxygen necessary for combustion of the fuel gas is supplied to a mixed gas chamber 2 on the back side of the combustion plate 1. It is designed to pass through a large number of conducting holes 1A and to form and burn a flame G2 distributed in a plane on an outer combustion surface 1B.
【０００４】この場合の燃焼板１は、厚板状の耐火材
料、例えばセラミックファイバーなどに図のような多数
の微細な導穴１Ａを設けたものを主体として形成されて
いる。[0004] The combustion plate 1 in this case is formed mainly of a thick plate-like refractory material, for example, ceramic fiber or the like, provided with a number of fine conductive holes 1A as shown in the figure.
【０００５】上記構成の面状火炎型バーナーは、先混合
式の単一ノズル型バーナーに比べて燃焼の完結が速いた
め、ＮＯX の発生量が低減できる、火炎Ｇ２が長くなら
ないので装置の小型化が図れる、などと云ったメリット
があり、吸収冷凍機における高温再生器の加熱装置など
としても使用されるようになってきている。[0005] surface-flame burner having the above structure, since faster completion of combustion in comparison with the single nozzle type burner previously mixing type, can be reduced generation amount of NO X, a compact apparatus because a flame G2 does not increase It has been used as a heating device for a high-temperature regenerator in an absorption refrigerator.
【０００６】[0006]
【発明が解決しようとする課題】しかし、上記元混合式
面状火炎型バーナーにおいては、燃焼板１が老朽化する
などして導穴１Ａが大きくなり過ぎると、火炎が混合ガ
ス室２にまで進入し、混合ガス室の全混合ガスが一気に
燃え上がる、いわゆる爆発が起こって危険であるので、
逆火しないようにする必要があり、この点の解決が課題
となっていた。However, in the above-described original mixing type planar flame type burner, if the guide hole 1A becomes too large due to the aging of the combustion plate 1, the flame reaches the mixed gas chamber 2. When entering, the entire mixed gas in the mixed gas chamber burns at once, a so-called explosion occurs and it is dangerous,
It was necessary to prevent a flashback, and solving this point was an issue.
【０００７】[0007]
【課題を解決するための手段】本発明は上記した従来技
術の課題を解決するためになされたもので、燃料ガス
と、この燃料ガスの燃焼に必要な量の酸素を含む空気と
が供給される混合ガス室と、この混合ガス室に臨んで配
設され、混合ガス室から供給される混合ガスが通過して
混合ガス室とは反対側の面に火炎を形成する多穴の燃焼
板を備えた元混合式面状火炎型バーナーにおいて、SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and is provided with a fuel gas and air containing an amount of oxygen necessary for combustion of the fuel gas. And a multi-hole combustion plate which is provided facing the mixed gas chamber and through which the mixed gas supplied from the mixed gas chamber passes and forms a flame on the surface opposite to the mixed gas chamber. In the original mixing type planar flame type burner equipped,
【０００８】混合ガスが通過可能に形成した多穴の板状
部材を混合ガス室の側から燃焼板に近接して設置するよ
うにした第１の構成の元混合式面状火炎型バーナーと、An original mixing type flat flame type burner according to a first configuration, in which a multi-hole plate member formed so as to allow a mixed gas to pass therethrough is installed close to the combustion plate from the side of the mixed gas chamber;
【０００９】この第１の構成の元混合式面状火炎型バー
ナーにおいて、燃焼板と板状多穴部材との間隙が２〜５
０ｍｍであるようにした第２の構成の元混合式面状火炎
型バーナーと、[0009] In the original mixing type planar flame type burner of the first configuration, the gap between the combustion plate and the plate-shaped multi-hole member is 2-5.
An original mixing planar flame type burner of the second configuration, which is set to 0 mm,
【００１０】前記第１または第２の構成の元混合式面状
火炎型バーナーにおいて、燃焼板と板状多穴部材との間
に、温度または圧力を検出することのできるセンサを設
置するようにした第３の構成の元混合式面状火炎型バー
ナーと、[0010] In the original mixing type planar flame type burner of the first or second configuration, a sensor capable of detecting temperature or pressure is provided between the combustion plate and the plate-shaped multi-hole member. An original mixing planar flame type burner of the third configuration,
【００１１】この第３の構成の元混合式面状火炎型バー
ナーにおいて、センサが所定の温度または所定の圧力を
越える温度または圧力を検出したときに、混合ガス室へ
の燃料ガスの供給を停止する燃料遮断装置を設置するよ
うにした第４の構成の元混合式面状火炎型バーナーと、In the third aspect of the present invention, the supply of fuel gas to the mixed gas chamber is stopped when the sensor detects a predetermined temperature or a temperature exceeding a predetermined pressure. An original mixing planar flame type burner having a fourth configuration in which a fuel cut-off device is installed;
【００１２】この第４の構成の元混合式面状火炎型バー
ナーにおいて、センサが出力する情報に基づいて燃料遮
断装置が燃料ガスの供給を停止したときに、燃料遮断装
置の作動を表示する安全装置作動表示器を設置するよう
にした第５の構成の元混合式面状火炎型バーナーと、を
提供することにより、前記従来技術の課題を解決するも
のである。In the fourth aspect of the present invention, when the fuel cutoff device stops supplying the fuel gas based on the information output from the sensor, the safety of the operation of the fuel cutoff device is displayed. A fifth aspect of the present invention is to solve the above-mentioned problems of the related art by providing a fifth embodiment of the present invention, in which an apparatus operation indicator is provided and an original mixing type planar flame type burner.
【００１３】[0013]
【発明の実施の形態】以下、図１に基づいて本発明の一
実施形態を詳細に説明する。なお、理解を容易にするた
め、この図１においても前記図２において説明した部分
と同様の機能を有する部分には、同一の符号を付した。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIG. Note that, in order to facilitate understanding, in FIG. 1 also, portions having the same functions as the portions described in FIG. 2 are denoted by the same reference numerals.
【００１４】図１に示した構成の元混合式面状火炎型バ
ーナー１００においては、多数の通気穴３Ａを有するパ
ンチングメタル３を燃焼板１の内面側に添設し、さら
に、燃焼板１とパンチングメタル３との間に温度または
圧力を検出することのできるセンサ４を介在させてい
る。In the original mixing type flat flame type burner 100 having the structure shown in FIG. 1, a punching metal 3 having a large number of ventilation holes 3A is provided on the inner surface side of the combustion plate 1, and the combustion plate 1 A sensor 4 capable of detecting temperature or pressure is interposed between the punching metal 3 and the punching metal 3.
【００１５】そして、このセンサ４と制御器５、また、
制御器５と燃料遮断装置としての開閉弁６および安全装
置作動表示器７とを通信可能に接続して、センサ４が所
定の温度（例えば、８０〜２００℃）を越える温度を検
出するか、所定の圧力（例えば、５０ｋＰａ）を越える
圧力上昇を検出したときに、開閉弁６が閉じて混合ガス
Ｇ１の混合ガス室２への供給を緊急停止すると共に、安
全装置作動表示器７を作動して開閉弁６が作動したこと
を知らせるように構成する。The sensor 4 and the controller 5, and
The controller 5 is communicably connected to the on-off valve 6 as a fuel cutoff device and the safety device operation indicator 7 so that the sensor 4 detects a temperature exceeding a predetermined temperature (for example, 80 to 200 ° C.) When a pressure rise exceeding a predetermined pressure (for example, 50 kPa) is detected, the on-off valve 6 is closed to urgently stop the supply of the mixed gas G1 to the mixed gas chamber 2 and activate the safety device operation indicator 7. The opening and closing valve 6 is configured to notify that it has operated.
【００１６】パンチングメタル３は、例えば直径が３〜
１０ｍｍ程度の通気穴３Ａを４０〜４００ケ／１００ｃ
ｍ2 程度の密度に開設した耐熱性ステンレス鋼鈑など
を、通気穴３Ａ同士の位置を多少ずらしながら熱容量が
大きくなるように、例えば２〜５枚を重ねるように配設
して構成する。The punching metal 3 has, for example, a diameter of 3 to
About 10mm ventilation hole 3A is 40-400 / 100c
A heat-resistant stainless steel plate or the like having a density of about m 2 is arranged by stacking, for example, two to five sheets so as to increase the heat capacity while slightly shifting the positions of the ventilation holes 3A.
【００１７】このパンチングメタル３を設置することに
より、燃焼板１の導穴１Ａが大きくなるなどして、火炎
Ｇ２が燃焼板１の裏面側に進入しても、混合ガス室２の
混合ガスＧ１に着火して爆発する前に、熱容量が大き
く、且つ、熱伝導率の良いパンチングメタル３により火
炎の熱が急速に失われて消火できるので、爆発の危険が
なくなる。By installing the punching metal 3, even if the flame G 2 enters the back side of the combustion plate 1 due to, for example, the introduction hole 1 A of the combustion plate 1 becoming larger, the mixed gas G 1 Before igniting and exploding, the heat of the flame is rapidly lost by the punching metal 3 having a large heat capacity and good thermal conductivity, and the fire can be extinguished, so that there is no danger of explosion.
【００１８】そして、燃焼板１とパンチングメタル３と
の間にある少量の混合ガスＧ１が、燃焼板１の裏面側に
進入した火炎Ｇ２によって爆発的に燃焼したときには、
この現象がセンサ４によって検出される。When a small amount of the mixed gas G1 between the combustion plate 1 and the punching metal 3 is explosively burned by the flame G2 entering the back surface of the combustion plate 1,
This phenomenon is detected by the sensor 4.
【００１９】すなわち、燃焼板１とパンチングメタル３
との間にある少量の混合ガスＧ１が、爆発的に燃焼する
と、温度と圧力が急激に上昇するので、センサ４によっ
て検出される。そして、このセンサ４が出力する情報に
基づいて開閉弁６が作動し、混合ガスＧ１の混合ガス室
２への供給が停止されると共に、開閉弁６が作動したこ
とが安全装置作動表示器７により表示される。That is, the combustion plate 1 and the punching metal 3
When a small amount of the mixed gas G1 in the explosion burns explosively, the temperature and the pressure rise rapidly, and are detected by the sensor 4. The on-off valve 6 is operated based on the information output from the sensor 4, the supply of the mixed gas G 1 to the mixed gas chamber 2 is stopped, and the operation of the on-off valve 6 is indicated by a safety device operation indicator 7. Is displayed.
【００２０】したがって、広い混合ガス室２にある混合
ガスＧ１の着火・爆発が防止できるだけでなく、損傷を
受けた燃焼板１を修理することができる。Therefore, it is possible not only to prevent ignition and explosion of the mixed gas G1 in the wide mixed gas chamber 2 but also to repair the damaged combustion plate 1.
【００２１】なお、パンチングメタル３の代わりに、１
００メッシュ程度の金網を４〜５枚程度重ねて配置して
もパンチングメタル３と同様の消火作用がある。In place of the punching metal 3, 1
The same fire extinguishing action as that of the punched metal 3 can be obtained even when about 4 to 5 wire meshes of about 00 mesh are arranged one on another.
【００２２】また、パンチングメタル３の代わりに、多
穴のセラミックス板を配置しても良い。セラミックスは
金属より熱伝導率が低いので、金属板のような強い消火
作用はないが、板厚を大きくすると消火作用も強化され
る。Further, instead of the punching metal 3, a ceramic plate having multiple holes may be arranged. Ceramics have a lower thermal conductivity than metal, and therefore do not have a strong fire-extinguishing effect unlike a metal plate. However, a thicker plate enhances the fire-extinguishing effect.
【００２３】また、直径１〜２ｍｍ程度の通気穴３Ａを
多数有するセラミックス板は、保炎作用があるので、消
火できない場合でも火炎Ｇ２は混合ガス室２までは進入
せず、セラミックス板の表面で火炎が維持される。Further, since the ceramic plate having a large number of ventilation holes 3A having a diameter of about 1 to 2 mm has a flame holding effect, even if the fire cannot be extinguished, the flame G2 does not enter the mixed gas chamber 2 and the surface of the ceramic plate has The flame is maintained.
【００２４】そして、このように燃焼板１の内側に添設
したセラミックス板によって保炎された場合にも、燃焼
板１とセラミックス板との間にある少量の混合ガスＧ１
の燃焼はセンサ４によって検出され、このセンサ４が出
力する情報に基づいて開閉弁６が作動し、混合ガスＧ１
の混合ガス室２への供給が停止されて消火が行われると
共に、開閉弁６が作動したことが安全装置作動表示器７
によって表示される。Even when the flame is held by the ceramic plate provided inside the combustion plate 1 as described above, a small amount of the mixed gas G1 between the combustion plate 1 and the ceramic plate can be obtained.
Is detected by the sensor 4, the opening / closing valve 6 is operated based on the information output from the sensor 4, and the mixed gas G 1
Is stopped, the fire is extinguished, and the operation of the on-off valve 6 indicates that the safety device operation indicator 7
Displayed by
【００２５】なお、パンチングメタル３などの板状多穴
部材は、燃焼板１から２〜５０ｍｍ程度離して設置する
のが好ましい。すなわち、その離間距離はセンサ４を取
り付けるスペースが確保できる寸法以上とする。一方、
前記離間距離が大きくなると、装置が大型化するだけで
なく、板状多穴部材と燃焼板１との間の混合ガスＧ１の
量が多くなって、この部分の混合ガスＧ１に着火すると
破壊力が大きくなり過ぎて各部を破損することになるの
で、パンチングメタル３などの板状多穴部材と燃焼板１
とは通常２〜５０ｍｍ程度離して設置する。It is preferable that the plate-shaped multi-hole member such as the punching metal 3 is installed at a distance of about 2 to 50 mm from the combustion plate 1. That is, the separation distance is set to be equal to or larger than a dimension where a space for mounting the sensor 4 can be secured. on the other hand,
When the separation distance increases, not only does the device become larger, but also the amount of the mixed gas G1 between the plate-shaped multi-hole member and the combustion plate 1 increases. Becomes too large, and each part is damaged. Therefore, the plate-shaped multi-hole member such as the punching metal 3 and the combustion plate 1
Is usually set at a distance of about 2 to 50 mm.
【００２６】また、燃焼板１の内側に添設する板状多穴
部材を形成するセラミックス板としては、Ａｌ2 Ｏ3 、
ＳｉＯ2 、ＴｉＯ2 、ＺｒＯ2 、ＭｇＯなどの粉末を単
独、または適宜混合して形成することができる。The ceramic plate forming the plate-shaped multi-hole member attached to the inside of the combustion plate 1 includes Al 2 O 3 ,
Powders such as SiO 2 , TiO 2 , ZrO 2 , and MgO can be used alone or by appropriately mixing them.
【００２７】なお、本発明は上記実施形態に限定される
ものではないので、特許請求の範囲に記載の趣旨から逸
脱しない範囲で各種の変形実施が可能である。Since the present invention is not limited to the above embodiment, various modifications can be made without departing from the spirit of the appended claims.
【００２８】例えば、異常発生時に燃焼を緊急停止する
ための開閉弁６は、図示しない燃料ガスのみの通路に設
置するようにしても良い。For example, the on-off valve 6 for urgently stopping the combustion when an abnormality occurs may be provided in a passage (not shown) for only the fuel gas.
【００２９】[0029]
【発明の効果】以上説明したように、本発明になる元混
合式面状火炎型バーナーによれば、逆火して爆発する危
険がない。特に、請求項３〜５のバーナーにおいては、
燃焼板と板状多穴部材との間にある少量の混合ガスが逆
火で燃焼するとその検出が可能であり、さらに燃料ガス
の供給が緊急停止されて安全が確保されると共に、燃料
の供給が緊急停止されたことが判るので、修理などの対
策も速やかに行える。As described above, according to the original mixing type flat flame type burner of the present invention, there is no danger of backfire and explosion. In particular, in the burners of claims 3 to 5,
If a small amount of mixed gas between the combustion plate and the plate-shaped multi-hole member is burned by flashback, it can be detected, and furthermore, the supply of fuel gas is urgently stopped to ensure safety, and the fuel supply Since it is known that the emergency stop has been performed, measures such as repair can be taken promptly.
【図１】一実施形態の説明図である。FIG. 1 is an explanatory diagram of one embodiment.
【図２】従来技術の説明図である。FIG. 2 is an explanatory diagram of a conventional technique.
１ 燃焼板 １Ａ 導穴 １Ｂ 燃焼面 ２ 混合ガス室 ３ パンチングメタル ３Ａ 通気穴 ４ センサ ５ 制御装置 ６ 開閉弁 ７ 安全装置作動表示器 １１ 燃料ガス １２ 空気 １００ 元混合式面状火炎型バーナー DESCRIPTION OF SYMBOLS 1 Combustion plate 1A Guide hole 1B Combustion surface 2 Mixed gas chamber 3 Perforated metal 3A Vent hole 4 Sensor 5 Control device 6 Open / close valve 7 Safety device operation indicator 11 Fuel gas 12 Air 100 Former mixed type planar flame burner
Claims (5)
な量の酸素を含む空気とが供給される混合ガス室と、こ
の混合ガス室に臨んで配設され、混合ガス室から供給さ
れる混合ガスが通過して混合ガス室とは反対側の面に火
炎を形成する多穴の燃焼板を備えた元混合式面状火炎型
バーナーであって、 混合ガスが通過可能に形成した多穴の板状部材を混合ガ
ス室の側から燃焼板に近接して設置したことを特徴とす
る元混合式面状火炎型バーナー。1. A mixed gas chamber to which a fuel gas and air containing an amount of oxygen necessary for combustion of the fuel gas are supplied, and a mixed gas chamber provided facing the mixed gas chamber and supplied from the mixed gas chamber. Is an original mixing type planar flame type burner provided with a multi-hole combustion plate that forms a flame on the surface opposite to the mixed gas chamber through which the mixed gas passes, and is formed so that the mixed gas can pass therethrough. An original mixing type planar flame type burner characterized in that a plate-like member having a hole is installed near a combustion plate from a side of a mixed gas chamber.
０ｍｍであることを特徴とする請求項１記載の元混合式
面状火炎型バーナー。2. The gap between the combustion plate and the plate-shaped multi-hole member is 2-5.
The original mixing type planar flame type burner according to claim 1, wherein the diameter is 0 mm.
たは圧力を検出することのできるセンサが設置されたこ
とを特徴とする請求項１または２記載の元混合式面状火
炎型バーナー。3. The original mixed planar flame according to claim 1, wherein a sensor capable of detecting temperature or pressure is provided between the combustion plate and the plate-shaped multi-hole member. Type burner.
越える温度または圧力を検出したときに、混合ガス室へ
の燃料ガスの供給を停止する燃料遮断装置が設置された
ことを特徴とする請求項３記載の元混合式面状火炎型バ
ーナー。4. A fuel cut-off device for stopping supply of fuel gas to the mixed gas chamber when a sensor detects a temperature or a pressure exceeding a predetermined temperature or a predetermined pressure. Item 3. An original mixing type planar flame type burner according to item 3.
断装置が燃料ガスの供給を停止したときに、燃料遮断装
置の作動を表示する安全装置作動表示器が設置されたこ
とを特徴とする請求項４記載の元混合式面状火炎型バー
ナー。5. A safety device operation indicator for displaying the operation of the fuel shut-off device when the fuel cut-off device stops supplying the fuel gas based on the information output from the sensor. Item 6. An original mixing type planar flame type burner according to item 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15795496A JP3685554B2 (en) | 1996-06-19 | 1996-06-19 | Original mixed surface flame type burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15795496A JP3685554B2 (en) | 1996-06-19 | 1996-06-19 | Original mixed surface flame type burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH109516A true JPH109516A (en) | 1998-01-16 |
| JP3685554B2 JP3685554B2 (en) | 2005-08-17 |
Family
ID=15661097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15795496A Expired - Fee Related JP3685554B2 (en) | 1996-06-19 | 1996-06-19 | Original mixed surface flame type burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3685554B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100830951B1 (en) | 2006-12-15 | 2008-05-20 | 연세대학교 산학협력단 | A back-flash control apparatus |
| US7921577B2 (en) * | 2006-09-12 | 2011-04-12 | Victaulic Company | Method and apparatus for drying sprinkler piping networks |
| JP2012122701A (en) * | 2010-12-10 | 2012-06-28 | Miura Co Ltd | Combustion device |
| CN103244963A (en) * | 2012-02-10 | 2013-08-14 | 通用电气公司 | Detection system and method to detect flame holding event |
| CN103672894A (en) * | 2013-11-28 | 2014-03-26 | 成都科盛石油科技有限公司 | Flat-flame combustion mechanism |
| CN106247331A (en) * | 2016-08-31 | 2016-12-21 | 程金富 | The energy-saving stove burner of automatic drainage function is had concurrently with negative pressure nozzle |
| CN114353084A (en) * | 2020-09-29 | 2022-04-15 | 芜湖美的厨卫电器制造有限公司 | Burner assembly, hot water equipment and temperature detection device |
-
1996
- 1996-06-19 JP JP15795496A patent/JP3685554B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7921577B2 (en) * | 2006-09-12 | 2011-04-12 | Victaulic Company | Method and apparatus for drying sprinkler piping networks |
| KR100830951B1 (en) | 2006-12-15 | 2008-05-20 | 연세대학교 산학협력단 | A back-flash control apparatus |
| JP2012122701A (en) * | 2010-12-10 | 2012-06-28 | Miura Co Ltd | Combustion device |
| CN103244963A (en) * | 2012-02-10 | 2013-08-14 | 通用电气公司 | Detection system and method to detect flame holding event |
| CN103672894A (en) * | 2013-11-28 | 2014-03-26 | 成都科盛石油科技有限公司 | Flat-flame combustion mechanism |
| CN103672894B (en) * | 2013-11-28 | 2016-02-03 | 成都科盛石油科技有限公司 | Flat-flame combustion mechanism |
| CN106247331A (en) * | 2016-08-31 | 2016-12-21 | 程金富 | The energy-saving stove burner of automatic drainage function is had concurrently with negative pressure nozzle |
| CN106247331B (en) * | 2016-08-31 | 2019-07-30 | 程金富 | The energy-saving stove burner of automatic drainage function is had both with negative pressure nozzle |
| CN114353084A (en) * | 2020-09-29 | 2022-04-15 | 芜湖美的厨卫电器制造有限公司 | Burner assembly, hot water equipment and temperature detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3685554B2 (en) | 2005-08-17 |
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