JP6121814B2 - Comrobana - Google Patents

Comrobana Download PDF

Info

Publication number
JP6121814B2
JP6121814B2 JP2013133330A JP2013133330A JP6121814B2 JP 6121814 B2 JP6121814 B2 JP 6121814B2 JP 2013133330 A JP2013133330 A JP 2013133330A JP 2013133330 A JP2013133330 A JP 2013133330A JP 6121814 B2 JP6121814 B2 JP 6121814B2
Authority
JP
Japan
Prior art keywords
burner
main
sub
valve
main burner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2013133330A
Other languages
Japanese (ja)
Other versions
JP2015007515A (en
Inventor
啓介 森
啓介 森
岡本　英男
英男 岡本
万之 赤木
万之 赤木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rinnai Corp
Original Assignee
Rinnai Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rinnai Corp filed Critical Rinnai Corp
Priority to JP2013133330A priority Critical patent/JP6121814B2/en
Publication of JP2015007515A publication Critical patent/JP2015007515A/en
Application granted granted Critical
Publication of JP6121814B2 publication Critical patent/JP6121814B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Regulation And Control Of Combustion (AREA)
  • Gas Burners (AREA)

Description

本発明は、バーナヘッドの外周面に開口する多数の主炎口を有する主バーナ部と、バーナヘッドの外周面に主炎口の下側で開口する多数の副炎口を有する副バーナ部とを備えるコンロバーナに関する。   The present invention includes a main burner portion having a large number of main flame openings opened on the outer peripheral surface of the burner head, and a sub burner portion having a large number of sub flame openings opened on the outer peripheral surface of the burner head below the main flame opening. It relates to a stove with.

従来、この種のコンロバーナとして、主バーナ部に燃料ガスを供給する主バーナ用ガス供給路と副バーナ部に燃料ガスを供給する副バーナ用ガス供給路との分岐部上流の共通ガス供給路に介設したガス流量調節弁と、主バーナ用ガス供給路に介設した主バーナ用開閉弁とを備え、副バーナ部のみに燃料ガスを供給して副バーナ部のみを燃焼させる状態から主バーナ用開閉弁の開弁で主バーナ部にも燃料ガスを供給して主バーナ部も燃焼させる状態に切換えられるようにしたものが知られている（例えば、特許文献１参照）。   Conventionally, as this type of burner, a common gas supply path upstream of a branch part between a main burner gas supply path for supplying fuel gas to the main burner section and a sub burner gas supply path for supplying fuel gas to the sub burner section And a main burner opening / closing valve interposed in the main burner gas supply passage, and the main gas burner is supplied from the state where only the sub burner portion is burned by supplying fuel gas. It is known that the burner on / off valve is opened so that the fuel gas is supplied to the main burner portion so that the main burner portion is also burned (see, for example, Patent Document 1).

ここで、上記従来例のもので、主バーナ部及び副バーナ部は、主バーナ用と副バーナ用の各混合管の上流端の流入口から一次空気が吸引されるようにした自然給気式バーナで構成され、主バーナ部及び副バーナ部に各混合管を介して空気過剰率（一次空気量／理論空気量）が１未満の混合気が供給されるようにしている。また、従来、主バーナ部に供給される混合気の空気過剰率を副バーナに供給される混合気の空気過剰率よりも高くし、主バーナ部の火炎が二次空気を求めて上方に長くのびることを抑制できるようにしたものも知られている（特許文献２参照）。   Here, in the above-mentioned conventional example, the main burner part and the sub burner part are a natural air supply type in which the primary air is sucked from the inlet of the upstream end of each mixing pipe for the main burner and the sub burner. An air-fuel mixture having an excess air ratio (primary air amount / theoretical air amount) of less than 1 is supplied to the main burner portion and the sub-burner portion via each mixing tube. Further, conventionally, the excess air ratio of the air-fuel mixture supplied to the main burner section is made higher than the excess air ratio of the air-fuel mixture supplied to the sub-burner, and the flame of the main burner section is long in the upward direction for secondary air. There is also known one capable of suppressing the extension (see Patent Document 2).

ところで、コンロバーナで調理容器を加熱する際の熱効率を向上させるには、調理容器をその底面中央部に亘って加熱できるように、バーナ外径（バーナヘッドの外径）を小さくすることが望まれる。然し、バーナ外径を小さくすると、バーナ内部の圧力損失が大きくなって、一次空気の吸引量が減少する。従って、主バーナ部での一次空気不足による燃焼不良を防止する上で、バーナ外径はあまり小さくできず、熱効率を十分に向上するまでには至っていないのが現状である。   By the way, in order to improve the thermal efficiency at the time of heating a cooking container with a stove burner, it is desirable to make a burner outer diameter (outer diameter of a burner head) small so that a cooking container can be heated over the center part of the bottom face. It is. However, if the outer diameter of the burner is reduced, the pressure loss inside the burner increases, and the amount of primary air sucked decreases. Accordingly, in order to prevent a combustion failure due to a shortage of primary air in the main burner portion, the outer diameter of the burner cannot be made very small, and the thermal efficiency has not been improved sufficiently.

そこで、本願出願人は、先に、副バーナ部は自然給気式バーナで構成するが、主バーナ部は、主バーナ用混合管に給気ファンから一次空気を強制的に供給する強制給気式バーナで構成するものを提案した。このように主バーナ部を強制給気式バーナで構成すれば、バーナ外径が小さくて圧力損失が大きくなっても、一次空気不足による燃焼不良を生じない。従って、バーナ外径を小さくして、主バーナ部も燃焼させる強火状態での熱効率を向上させることができる。尚、副バーナ部も強制給気式バーナで構成すると、吹き消えを防止する上で副バーナ部への燃料ガスの供給量を然程絞ることができなくなるが、上記の如く副バーナ部を自然給気式バーナで構成すれば、吹き消えを生ずることなく副バーナ部への燃料ガスの供給量を十分に絞ることができ、ターンダウン比を大きく確保することが可能になる。   Therefore, the applicant of the present application firstly configures the sub-burner unit with a natural air supply type burner, but the main burner unit is a forced air supply that forcibly supplies primary air from the air supply fan to the mixing tube for the main burner. We proposed what consists of an expression burner. If the main burner portion is configured with a forced air supply burner in this way, even if the burner outer diameter is small and the pressure loss is large, combustion failure due to insufficient primary air does not occur. Therefore, it is possible to reduce the outer diameter of the burner and improve the thermal efficiency in a strong fire state in which the main burner portion is also combusted. If the auxiliary burner unit is also composed of a forced air supply type burner, the amount of fuel gas supplied to the auxiliary burner unit cannot be reduced so as to prevent blowout. If the air supply type burner is used, the amount of fuel gas supplied to the sub-burner section can be sufficiently reduced without causing blowout, and a large turndown ratio can be secured.

但し、火力を弱めるために主バーナ用開閉弁を閉弁して副バーナ部のみを燃焼させる状態に切換える場合、主バーナ用開閉弁の閉弁直後は、ガス流量調節弁を通過した燃料ガスの主バーナ用ガス供給路への分流が遮断されることで、副バーナ部への燃料ガスの供給量が一時的に急に増加することになる。そして、自然給気式バーナである副バーナ部への一次空気の供給量は急には増加しないため、ガス供給量の急な増加で相対的に一次空気が不足し、火炎が伸びたり、イエロー（黄炎）となる等の燃焼不良を生ずる。   However, when the main burner on / off valve is closed to switch to a state in which only the sub burner is burned in order to weaken the thermal power, immediately after the main burner on / off valve is closed, the fuel gas that has passed through the gas flow control valve By shutting off the diversion to the main burner gas supply path, the amount of fuel gas supplied to the sub-burner section temporarily increases suddenly. And since the supply amount of primary air to the sub-burner section, which is a natural air supply type burner, does not increase suddenly, the sudden increase in gas supply amount causes a relative shortage of primary air, resulting in a flame or yellow It causes poor combustion such as (yellow flame).

特開２００８−２８１２７１号公報JP 2008-281271 A 特開２００９−５８１９５号公報JP 2009-58195 A

本発明は、以上の点に鑑み、先の提案のコンロバーナを改良し、主バーナ用開閉弁を閉弁して副バーナ部のみを燃焼させる状態に切換えるときに副バーナ部の燃焼不良を生ずることを防止できるようにしたコンロバーナを提供することをその課題としている。   In view of the above, the present invention improves the previously proposed stove burner, and causes the combustion failure of the sub-burner portion when the main burner on-off valve is closed to switch to the state in which only the sub-burner portion is combusted. The challenge is to provide a combustor that can prevent this.

上記課題を解決するために、本発明は、バーナヘッドの外周面に開口する多数の主炎口を有する主バーナ部と、バーナヘッドの外周面に主炎口の下側で開口する多数の副炎口を有する副バーナ部と、主バーナ部に燃料ガスを供給する主バーナ用ガス供給路と副バーナ部に燃料ガスを供給する副バーナ用ガス供給路との分岐部上流の共通ガス供給路に介設したガス流量調節弁と、主バーナ用ガス供給路に介設した主バーナ用開閉弁とを備え、副バーナ部のみに燃料ガスを供給して副バーナ部のみを燃焼させる状態から主バーナ用開閉弁の開弁で主バーナ部にも燃料ガスを供給して主バーナ部も燃焼させる状態に切換えられるようにしたコンロバーナであって、副バーナ部は、副バーナ用混合管の上流端の流入口から一次空気が吸引されるようにした自然給気式バーナで構成され、主バーナ部は、主バーナ用混合管に給気ファンから一次空気を強制的に供給する強制給気式バーナで構成され、使用者の火力調節操作に応じてガス流量調節弁と主バーナ用開閉弁と給気ファンとを制御する制御手段を備えるものにおいて、制御手段は、主バーナ部も燃焼させる状態から主バーナ用開閉弁を閉弁させて副バーナ部のみを燃焼させる状態に切換えるとき、主バーナ用開閉弁を閉弁してから所定時間経過するまでは、給気ファンの回転を継続する制御を行うことを特徴とする。   In order to solve the above-described problems, the present invention provides a main burner portion having a large number of main flame openings opened on the outer peripheral surface of the burner head, and a plurality of sub-openings opened on the outer peripheral surface of the burner head below the main flame openings. A common gas supply path upstream of the branch part of the sub-burner section having a flame outlet, a main burner gas supply path for supplying fuel gas to the main burner section, and a sub-burner gas supply path for supplying fuel gas to the sub-burner section And a main burner opening / closing valve interposed in the main burner gas supply passage, and the main gas burner is supplied from the state where only the sub burner portion is burned by supplying fuel gas. A burner opening / closing valve that supplies fuel gas to the main burner section so that the main burner section is also burned so that the sub burner section is upstream of the mixing pipe for the sub burner. So that primary air is sucked in from the end inlet The main burner section is composed of a forced air supply burner that forcibly supplies the primary air from the air supply fan to the main burner mixing tube, and is adapted to the user's thermal power adjustment operation. And a control means for controlling the gas flow rate adjusting valve, the main burner on-off valve and the air supply fan. The control means closes the main burner on-off valve from a state in which the main burner portion is also combusted, and the auxiliary burner. When switching to a state in which only the part is combusted, control is performed to continue the rotation of the air supply fan until a predetermined time elapses after the main burner on-off valve is closed.

本発明によれば、主バーナ用開閉弁の閉弁直後に副バーナ部へのガス供給量が急に増加して相対的に一次空気が不足しても、給気ファンの継続回転で主バーナ部の炎口である主炎口から流出する空気が副バーナ部に二次空気として供給される。従って、主バーナ用開閉弁を閉弁して副バーナ部のみを燃焼させる状態に切換えるときに、副バーナ部で燃焼不良を生ずることを効果的に防止できる。   According to the present invention, even if the amount of gas supplied to the sub-burner section suddenly increases immediately after the main burner on / off valve is closed and the primary air is relatively short, the main burner is continuously rotated by the supply air fan. The air flowing out from the main flame mouth, which is the flame mouth of the part, is supplied as secondary air to the sub-burner part. Therefore, when the main burner on-off valve is closed to switch to a state in which only the sub-burner portion is combusted, it is possible to effectively prevent the combustion failure in the sub-burner portion.

本発明の実施形態のコンロバーナの斜視図。The perspective view of the stove burner of embodiment of this invention. 図１のＩＩ−ＩＩ線で切断した断面図。Sectional drawing cut | disconnected by the II-II line | wire of FIG. 主バーナ部への燃料ガスの供給開始時の給気ファンの制御内容を示すフロー図。The flowchart which shows the control content of the air supply fan at the time of the supply start of the fuel gas to a main burner part.

図１を参照して、本発明の実施形態のコンロバーナ１は、図示省略したコンロ天板のバーナ用開口に挿通されるバーナボディ２と、バーナボディ２上の環状のバーナヘッド３とを備えている。バーナヘッド３の外周面には、主炎口４ｍとその下側に位置する副炎口４ｓとが夫々周方向の間隔を存して多数開口している。尚、副炎口４ｓの総開口面積は、主炎口４ｍの総開口面積よりも小さい。   Referring to FIG. 1, a stove burner 1 according to an embodiment of the present invention includes a burner body 2 inserted into a burner opening of a stove top plate (not shown), and an annular burner head 3 on the burner body 2. ing. On the outer peripheral surface of the burner head 3, a large number of main flame outlets 4m and auxiliary flame outlets 4s located therebelow are opened at intervals in the circumferential direction. Note that the total opening area of the auxiliary flame opening 4s is smaller than the total opening area of the main flame opening 4m.

バーナボディ２は、図２に示す如く、外側の筒体２１と中間の筒体２２と内側の筒体２３との内外３重の筒体を備えている。バーナヘッド３は、内周にバーナボディ２の中間筒体２２に嵌合する筒部３１ａを垂設した環状の下ヘッド部材３１と、下面内周部にバーナボディ２の内側筒体２３に嵌合する筒部３２ａを垂設した環状の上ヘッド部材３２とで構成されている。   As shown in FIG. 2, the burner body 2 includes an inner and outer triple cylinder body including an outer cylinder body 21, an intermediate cylinder body 22, and an inner cylinder body 23. The burner head 3 is fitted into an annular lower head member 31 having a cylindrical portion 31a fitted to the intermediate cylindrical body 22 of the burner body 2 on the inner periphery, and an inner cylindrical body 23 of the burner body 2 on the inner peripheral portion of the lower surface. It is comprised with the cyclic | annular upper head member 32 which hung the cylindrical part 32a to join.

下ヘッド部材３１の上面外周部には、上ヘッド部材３２が着座する上環状壁３３が立設されている。上環状壁３３には、その上端面から下方に窪む主炎口４ｍとなる溝が周方向の間隔を存して多数形成されている。そして、これらの溝の上端が上ヘッド部材３２により閉塞されることで、下ヘッド部材３１と上ヘッド部材３２との間に主炎口４ｍが画成されるようにしている。また、主炎口４ｍは、下ヘッド部材３１と上ヘッド部材３２とバーナボディ２の中間筒体２２と内側筒体２３とで囲われる空間に連通しており、これら下ヘッド部材３１、上ヘッド部材３２、中間筒体２２及び内側筒体２３で主炎口４ｍを有する主バーナ部１ｍが構成される。   An upper annular wall 33 on which the upper head member 32 is seated is erected on the outer peripheral portion of the upper surface of the lower head member 31. The upper annular wall 33 is formed with a large number of grooves that form a main flame opening 4m that is recessed downward from the upper end surface with a circumferential interval. The upper ends of these grooves are closed by the upper head member 32, so that the main flame opening 4m is defined between the lower head member 31 and the upper head member 32. The main flame opening 4m communicates with a space surrounded by the lower head member 31, the upper head member 32, the intermediate cylinder 22 and the inner cylinder 23 of the burner body 2, and the lower head member 31, the upper head The member 32, the intermediate cylinder 22 and the inner cylinder 23 constitute a main burner portion 1m having a main flame opening 4m.

また、下ヘッド部材３１の下面外周部には、バーナボディ２の外側筒体２１の上端部に着座する下環状壁３４が垂設されている。下環状壁３４には、その下端面から上方に窪む副炎口４ｓとなる溝が周方向の間隔を存して多数形成されている。そして、これら溝の下端が外側筒体２１の上端部により閉塞されることで、バーナボディ２と下ヘッド部材３１との間に副炎口４ｓが画成されるようにしている。また、副炎口４ｓは、下ヘッド部材３１とバーナボディ２の外側筒体２１と中間筒体２２とで囲われる空間に連通しており、これら下ヘッド部材３１、外側筒体２１及び中間筒体２２で副炎口４ｓを有する副バーナ部１ｓが構成される。   Further, a lower annular wall 34 that is seated on the upper end portion of the outer cylinder 21 of the burner body 2 is suspended from the outer peripheral portion of the lower surface of the lower head member 31. The lower annular wall 34 is formed with a large number of grooves serving as the auxiliary flame ports 4s that are recessed upward from the lower end surface thereof with a circumferential interval. Then, the lower end of these grooves is closed by the upper end portion of the outer cylindrical body 21 so that the auxiliary flame opening 4 s is defined between the burner body 2 and the lower head member 31. Further, the auxiliary flame opening 4s communicates with a space surrounded by the lower head member 31, the outer cylinder 21 and the intermediate cylinder 22 of the burner body 2, and these lower head member 31, the outer cylinder 21, and the intermediate cylinder. The body 22 constitutes the auxiliary burner portion 1s having the auxiliary flame opening 4s.

バーナ１は、更に、バーナボディ２の中間筒体２２と内側筒体２３との間の空間に連通する主バーナ用混合管５ｍと、バーナボディ２の外側筒体２１と中間筒体２２との間の空間に連通する副バーナ用混合管５ｓとを備える。図１を参照して、主バーナ用混合管５ｍには、共通ガス供給路６から分岐した主バーナ用ガス供給路６ｍを介して燃料ガスが供給され、副バーナ用混合管５ｓには、共通ガス供給路６から分岐した副バーナ用ガス供給路６ｓを介して燃料ガスが供給される。   The burner 1 further includes a main burner mixing tube 5m communicating with a space between the intermediate cylinder 22 and the inner cylinder 23 of the burner body 2, and an outer cylinder 21 and an intermediate cylinder 22 of the burner body 2. And a sub-burner mixing pipe 5 s communicating with the space between them. Referring to FIG. 1, the fuel gas is supplied to the main burner mixing pipe 5m through the main burner gas supply path 6m branched from the common gas supply path 6, and the sub burner mixing pipe 5s is connected to the common burner mixing pipe 5s. Fuel gas is supplied through a sub-burner gas supply path 6 s branched from the gas supply path 6.

共通ガス供給路６には、元開閉弁６１と、ガス流量調節弁６２とが介設され、また、主バーナ用ガス供給路６ｍには、主バーナ用開閉弁６３が介設されている。そして、主バーナ用開閉弁６３の閉弁と開弁とにより、副バーナ部１ｓのみに燃料ガスを供給して副バーナ部１ｓのみを燃焼させる状態と、主バーナ部１ｍにも燃料ガスを供給して主バーナ１ｍも燃焼させる状態とに切換自在としている。尚、副バーナ部１ｓの周方向一箇所に臨ませて点火プラグ７が設けられており、図示省略した点消火用の操作子の点火操作による点火プラグ７での火花放電で副バーナ部１ｓに点火される。   The common gas supply path 6 is provided with a main opening / closing valve 61 and a gas flow rate adjusting valve 62, and the main burner gas supply path 6m is provided with a main burner opening / closing valve 63. Then, by closing and opening the main burner opening / closing valve 63, the fuel gas is supplied only to the sub-burner portion 1s and only the sub-burner portion 1s is combusted, and the fuel gas is also supplied to the main burner portion 1m. Thus, the main burner 1m can also be switched to a state of burning. An ignition plug 7 is provided so as to face one place in the circumferential direction of the sub-burner portion 1s, and the sub-burner portion 1s is subjected to a spark discharge by the ignition plug 7 by an ignition operation of an unillustrated operating member for ignition. Ignited.

ここで、副バーナ部１ｓは、副バーナ用混合管５ｓの上流端の流入口５ｓａに臨む図示省略したガスノズルからの燃料ガスの噴射に伴い流入口５ｓａから一次空気が吸引されるようにした自然給気式バーナで構成される。一方、主バーナ用混合管５ｍの上流端には給気ファン８が接続されている。そして、主バーナ部１ｍは、給気ファン８から一次空気を強制的に供給する強制給気式バーナで構成される。尚、主バーナ用混合管５ｍの上流端近傍の側面には、混合管５ｍ内部の図示省略したガスノズルに連なるガス流入口５ｍａが設けられており、このガス流入口５ｍａに主バーナ用ガス供給路６ｍが接続される。   Here, the sub-burner portion 1s has a natural structure in which primary air is sucked from the inflow port 5sa as fuel gas is injected from a gas nozzle (not shown) facing the inflow port 5sa at the upstream end of the sub-burner mixing pipe 5s. Consists of an air supply burner. On the other hand, an air supply fan 8 is connected to the upstream end of the main burner mixing pipe 5m. The main burner portion 1m is configured by a forced air supply burner that forcibly supplies primary air from the air supply fan 8. A gas inlet 5ma connected to a gas nozzle (not shown) inside the mixing pipe 5m is provided on the side surface in the vicinity of the upstream end of the main burner mixing pipe 5m, and the main burner gas supply path is connected to the gas inlet 5ma. 6m is connected.

上記元開閉弁６１、ガス流量調節弁６２、主バーナ用開閉弁６３及び給気ファン８は、マイクロコンピュータから成る図示省略した制御手段で制御される。元開閉弁６１は、点消火用の操作子の点火操作で開弁され、消火操作で閉弁されるように制御される。ガス流量調節弁６２は、図示省略した火力調節用の操作子に連動して開度が変化するように制御される。主バーナ用開閉弁６３は、火力調節用操作子が所定の中間位置を超えて強火側に操作されたときに開弁されるように制御される。また、給気ファン８は、火力調節用操作子が中間位置を超えて強火側に操作されたとき、即ち、主バーナ部１ｍで燃焼させるときに、主バーナ部１ｍへの燃料ガスの供給量に対応する基準回転数で回転するように制御される。この基準回転数は、主バーナ部１ｍに供給される混合気の空気過剰率が０．８〜１程度の比較的高い値になるように設定される。   The original opening / closing valve 61, the gas flow rate adjusting valve 62, the main burner opening / closing valve 63 and the air supply fan 8 are controlled by a control means (not shown) including a microcomputer. The original on-off valve 61 is controlled to be opened by the ignition operation of the point fire extinguishing operation element and closed by the fire extinguishing operation. The gas flow rate adjusting valve 62 is controlled so that the opening degree is changed in conjunction with a thermal power adjusting operator (not shown). The main burner on-off valve 63 is controlled so as to be opened when the thermal power adjusting operator is operated to the high fire side beyond a predetermined intermediate position. Further, the supply fan 8 supplies the fuel gas to the main burner 1m when the thermal power adjusting operation element is operated to the high fire side beyond the intermediate position, that is, when the combustion is performed in the main burner 1m. It is controlled to rotate at a reference rotational speed corresponding to. This reference rotational speed is set so that the excess air ratio of the air-fuel mixture supplied to the main burner portion 1m becomes a relatively high value of about 0.8 to 1.

本実施形態の如く主バーナ部１ｍを強制給気式バーナで構成すれば、バーナ外径が小さくて圧力損失が大きくなっても、一次空気不足による燃焼不良を生じない。従って、バーナ外径を小さくして、主バーナ部１ｍも燃焼させる強火状態での熱効率を向上させることができる。尚、副バーナ部１ｓも強制給気式バーナで構成すると、吹き消えを防止する上で副バーナ部１ｓへの燃料ガスの供給量を然程絞ることができなくなるが、本実施形態の如く副バーナ部１ｓを自然給気式バーナで構成すれば、吹き消えの恐れなく副バーナ部１ｓへの燃料ガスの供給量を十分に絞ることができ、ターンダウン比を大きく確保することが可能になる。   If the main burner portion 1m is configured with a forced air supply burner as in this embodiment, even if the burner outer diameter is small and the pressure loss is large, combustion failure due to insufficient primary air does not occur. Accordingly, it is possible to reduce the outer diameter of the burner and improve the thermal efficiency in a high fire state where the main burner portion 1m is also combusted. If the sub-burner unit 1s is also composed of a forced air supply type burner, the amount of fuel gas supplied to the sub-burner unit 1s cannot be reduced so as to prevent blow-off. If the burner unit 1s is composed of a naturally supplied burner, the amount of fuel gas supplied to the sub-burner unit 1s can be sufficiently reduced without fear of blow-off, and a large turndown ratio can be secured. .

ところで、主バーナ用開閉弁６３を閉弁して副バーナ部１ｓのみを燃焼させる状態に切換える場合、主バーナ用開閉弁６３の閉弁直後は、ガス流量調節弁６２を通過した燃料ガスの主バーナ用ガス供給路６ｍへの分流が遮断されることで、副バーナ部１ｓへの燃料ガスの供給量が一時的に急に増加することになる。そして、自然給気式バーナである副バーナ部１ｓへの一次空気の供給量は急には増加しないため、ガス供給量の急な増加で相対的に一次空気が不足し、火炎が伸びたり、イエロー（黄炎）となる等の燃焼不良を生ずる。   By the way, when the main burner on / off valve 63 is closed and switched to a state in which only the sub burner portion 1 s is combusted, immediately after the main burner on / off valve 63 is closed, the main part of the fuel gas that has passed through the gas flow rate control valve 62 By shutting off the branch flow to the burner gas supply path 6m, the amount of fuel gas supplied to the sub-burner portion 1s suddenly increases abruptly. And since the supply amount of the primary air to the sub-burner part 1s which is a natural air supply type burner does not increase suddenly, the primary air becomes relatively short due to a sudden increase in the gas supply amount, and the flame extends. Combustion failure such as yellow (yellow flame) occurs.

そこで、本実施形態では、制御手段により、給気ファン８を以下の如く制御するようにした。即ち、図３に示す如く、主バーナ部１ｍも燃焼させる状態から副バーナ部１ｓのみを燃焼させる状態に切換えるとき、即ち、主バーナ用開閉弁６３を閉弁させたとき（ＳＴＥＰ１）、給気ファン８を継続して回転させる（ＳＴＥＰ２）。そして、主バーナ用開閉弁６３を閉弁してから所定時間（例えば、２秒）経過したか否かを判別し（ＳＴＥＰ３）、所定時間経過するまでは、給気ファン８を回転状態に維持し、所定時間経過後に給気ファン８を停止させる（ＳＴＥＰ４）。   Therefore, in this embodiment, the air supply fan 8 is controlled as follows by the control means. That is, as shown in FIG. 3, when switching from the state where the main burner portion 1m is also combusted to the state where only the sub burner portion 1s is combusted, that is, when the main burner on-off valve 63 is closed (STEP 1), The fan 8 is continuously rotated (STEP 2). Then, it is determined whether or not a predetermined time (for example, 2 seconds) has elapsed since the main burner on-off valve 63 was closed (STEP 3), and the air supply fan 8 is maintained in a rotating state until the predetermined time elapses. Then, the air supply fan 8 is stopped after a predetermined time has elapsed (STEP 4).

これにより、主バーナ用開閉弁６３の閉弁直後に副バーナ部１ｓへのガス供給量が急に増加して相対的に一次空気が不足しても、給気ファン８の継続回転で主バーナ部１ｍの炎口である主炎口４ｍから流出する空気が副バーナ部１ｓに二次空気として供給される。従って、主バーナ用開閉弁６３を閉弁して副バーナ部１ｓのみを燃焼させる状態に切換えるときに、副バーナ部１ｓで燃焼不良を生ずることを効果的に防止できる。   As a result, even if the amount of gas supplied to the sub-burner portion 1s suddenly increases immediately after the main burner on / off valve 63 is closed and the primary air is relatively short, the main burner is continuously rotated by the air supply fan 8. The air flowing out from the main flame mouth 4m which is the flame mouth of the part 1m is supplied as secondary air to the sub-burner part 1s. Therefore, when the main burner on-off valve 63 is closed and the state is switched to the state where only the sub-burner portion 1s is combusted, it is possible to effectively prevent the sub-burner portion 1s from causing a combustion failure.

以上、本発明の実施形態について図面を参照して説明したが、本発明はこれに限定されるものではなく、本発明の趣旨を逸脱しない範囲で種々変形して実施することができる。   As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this, Various deformation | transformation can be implemented in the range which does not deviate from the meaning of this invention.

１…コンロバーナ、１ｍ…主バーナ部、１ｓ…副バーナ部、３…バーナヘッド、４ｍ…主炎口、４ｓ…副炎口、５ｍ…主バーナ用混合管、５ｓ…副バーナ用混合管、６…共通ガス供給路、６ｍ…主バーナ用ガス供給路、６ｓ…副バーナ用ガス供給路、６２…ガス流量調節弁、６３…主バーナ用開閉弁、８…給気ファン。   DESCRIPTION OF SYMBOLS 1 ... Combustor, 1m ... Main burner part, 1s ... Sub burner part, 3 ... Burner head, 4m ... Main flame opening, 4s ... Secondary flame opening, 5m ... Main burner mixing pipe, 5s ... Sub burner mixing pipe, 6 ... Common gas supply path, 6m ... Gas supply path for main burner, 6s ... Gas supply path for sub-burner, 62 ... Gas flow control valve, 63 ... Open / close valve for main burner, 8 ... Air supply fan.

Claims (1)

バーナヘッドの外周面に開口する多数の主炎口を有する主バーナ部と、バーナヘッドの外周面に主炎口の下側で開口する多数の副炎口を有する副バーナ部と、主バーナ部に燃料ガスを供給する主バーナ用ガス供給路と副バーナ部に燃料ガスを供給する副バーナ用ガス供給路との分岐部上流の共通ガス供給路に介設したガス流量調節弁と、主バーナ用ガス供給路に介設した主バーナ用開閉弁とを備え、副バーナ部のみに燃料ガスを供給して副バーナ部のみを燃焼させる状態から主バーナ用開閉弁の開弁で主バーナ部にも燃料ガスを供給して主バーナ部も燃焼させる状態に切換えられるようにしたコンロバーナであって、
副バーナ部は、副バーナ用混合管の上流端の流入口から一次空気が吸引されるようにした自然給気式バーナで構成され、
主バーナ部は、主バーナ用混合管に給気ファンから一次空気を強制的に供給する強制給気式バーナで構成され、
使用者の火力調節操作に応じてガス流量調節弁と主バーナ用開閉弁と給気ファンとを制御する制御手段を備えるものにおいて、
制御手段は、主バーナ部も燃焼させる状態から主バーナ用開閉弁を閉弁させて副バーナ部のみを燃焼させる状態に切換えるとき、主バーナ用開閉弁を閉弁してから所定時間経過するまでは、給気ファンの回転を継続する制御を行うことを特徴とするコンロバーナ。 A main burner portion having a number of main flame openings opened on the outer peripheral surface of the burner head, a sub burner portion having a number of sub flame openings opening on the outer peripheral surface of the burner head below the main flame port, and a main burner portion A gas flow rate control valve provided in a common gas supply path upstream of a branch portion between a gas supply path for a main burner for supplying fuel gas to the gas supply path for a sub burner for supplying fuel gas to the sub burner, and a main burner The main burner on / off valve is provided in the main gas burner, and the main burner on / off valve is opened from the state where fuel gas is supplied only to the sub burner and only the sub burner is combusted. A burner that can be switched to a state in which the main burner is also burned by supplying fuel gas,
The sub-burner section is composed of a natural air supply type burner in which primary air is sucked from the inlet of the upstream end of the sub-burner mixing pipe,
The main burner section is composed of a forced air supply burner that forcibly supplies primary air from the air supply fan to the main burner mixing tube,
In what comprises a control means for controlling the gas flow rate adjusting valve, the main burner on-off valve, and the air supply fan according to the user's thermal power adjusting operation,
When the control means switches from a state where the main burner portion is also burned to a state where the main burner on-off valve is closed and only the sub-burner portion is combusted, a predetermined time elapses after the main burner on-off valve is closed. Is a control burner that performs control to continue rotation of the air supply fan.
JP2013133330A 2013-06-26 2013-06-26 Comrobana Active JP6121814B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013133330A JP6121814B2 (en) 2013-06-26 2013-06-26 Comrobana

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013133330A JP6121814B2 (en) 2013-06-26 2013-06-26 Comrobana

Publications (2)

Publication Number Publication Date
JP2015007515A JP2015007515A (en) 2015-01-15
JP6121814B2 true JP6121814B2 (en) 2017-04-26

Family

ID=52337899

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013133330A Active JP6121814B2 (en) 2013-06-26 2013-06-26 Comrobana

Country Status (1)

Country Link
JP (1) JP6121814B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6530275B2 (en) * 2015-08-18 2019-06-12 リンナイ株式会社 Combustion device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0518517A (en) * 1991-07-08 1993-01-26 Meitoo:Kk Burner
JP4203456B2 (en) * 2004-07-21 2009-01-07 パロマ工業株式会社 Stove burner
JP4415167B2 (en) * 2004-11-15 2010-02-17 パロマ工業株式会社 Gas stove
ITVE20120036A1 (en) * 2012-09-27 2014-03-28 Defendi Italy Srl METHOD OF ADJUSTING THE HEATING POWER OF A GAS BURNER AND A GAS BURNER, PERFECTED THAT USES THE METHOD.

Also Published As

Publication number Publication date
JP2015007515A (en) 2015-01-15

Similar Documents

Publication Publication Date Title
JP5948440B2 (en) Gas-air mixing equipment for combustion equipment
JP2016513783A (en) Dual venturi for combustion equipment
JP5893763B2 (en) Dual venturi for combustion equipment
US20150056563A1 (en) Dual venturi for combustor
JP4877814B2 (en) Comrobana
JP6121814B2 (en) Comrobana
JP5701821B2 (en) Stove burner
JP2011220653A (en) Burner for gas cooking stove, and gas cooking stove
JP6121813B2 (en) Comrobana
JP6215594B2 (en) Comrobana
CN201281332Y (en) Energy saving burner
JP4203456B2 (en) Stove burner
CN201265861Y (en) Energy saving burner
WO2018086220A1 (en) Combustion device and dual-gas source converter thereof
CN201281334Y (en) Energy saving burner
JP2022186104A (en) Gas cooking stove
JP5718855B2 (en) Stove burner
KR20130036023A (en) Gas and air control linkage type high firepower gas-burner
KR100661056B1 (en) Gas valve
CN201281333Y (en) Energy saving burner
CN219119837U (en) Plug valve and kitchen range
CN201259221Y (en) Energy-conserving burner
JP4461369B2 (en) Stove
JP4338195B2 (en) Stove
CN210035489U (en) Energy-saving stove

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20160422

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20170209

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20170307

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20170330

R150 Certificate of patent or registration of utility model

Ref document number: 6121814

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250