JP2008089299A - Cooking stove - Google Patents

Cooking stove Download PDF

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JP2008089299A
JP2008089299A JP2007285609A JP2007285609A JP2008089299A JP 2008089299 A JP2008089299 A JP 2008089299A JP 2007285609 A JP2007285609 A JP 2007285609A JP 2007285609 A JP2007285609 A JP 2007285609A JP 2008089299 A JP2008089299 A JP 2008089299A
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flame
outer peripheral
peripheral edge
mouth
burner head
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Koichi Koto
公一 光藤
Akihiro Miura
晃裕 三浦
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Paloma Kogyo KK
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Paloma Kogyo KK
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<P>PROBLEM TO BE SOLVED: To set minimum input low by improving flame stability when adjusting thermal power from high thermal power to low thermal power. <P>SOLUTION: A flame holding part 24 for holding a flame is formed in a space surrounded by the outer peripheral edge 60 of each protrusion 3 of a burner head 20, the lower face of a hood part 26 and a placing surface of the burner head 20 of a burner body 10, and the flame holding part 24 is divided into a triangular upper flame holding part 24a surrounded by an upper outer peripheral edge 60a and the lower face of the hood part 26, and a lower flame holding part 24b surrounded by the lower face of level difference 23, the lower outer peripheral edge 60b of the protrusion 3 and the placing surface. Consequently, even when thermal power is quickly adjusted from high thermal power to low thermal power to weaken the flame inward, the flame is vertically divided and held well in each of the upper flame holding part 24a and the lower flame holding part 24b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、調理用のこんろに関する。   The present invention relates to a cooking stove.

この種のこんろに用いられるバーナ101は、図8に示されるように、バーナ本体110の上にバーナヘッド120を脱着自在に載置することによって、その外周面に多数の炎口102からなる炎口部を形成する。そして、近年では、環境問題などへの関心の高まりから、調理用こんろにおいても熱効率を向上させることが望まれている。調理用こんろの熱効率を向上させる方法の一つとして、こんろバーナと鍋底との距離を縮めることにより、火炎と鍋底との接触面積を大きくして伝熱面積を大きくする方法が知られているが、この結果として燃焼が悪化することから一次空気の量を増やす対策が採られる。   As shown in FIG. 8, the burner 101 used in this type of stove comprises a large number of flame ports 102 on the outer peripheral surface thereof by detachably mounting the burner head 120 on the burner body 110. Form a flame port. And in recent years, it has been desired to improve the thermal efficiency of cooking stoves because of increasing interest in environmental problems. One way to improve the thermal efficiency of a cooking stove is to increase the heat transfer area by increasing the contact area between the flame and the pan bottom by reducing the distance between the stove burner and the pan bottom. However, since the combustion deteriorates as a result of this, measures to increase the amount of primary air are taken.

ところが、燃焼性能を向上させるために一次空気を増やすと、混合ガスの流速が上がり、炎がリフトしやすくなるという問題が生じてくる。そこで、特許文献1では、図8に示されるように、炎口部の外周面の途中に保炎用の鍔150を設けて火炎のリフトを防止するこんろ101が提案されている。このようなこんろ101では、炎口102から噴出するガスの流れが鍔150により火炎の基端部において乱され渦流状となるために最適な保炎性が確保され炎口102に形成される火炎のリフトは抑えられる。また、炎口部に形成される火炎は最小インプット(インプット:単位時間当たりの燃料ガス供給量(kcal/h))の際には、図8に示されるように、炎口部の外周面の上端aと下端bとが基部となり保炎される。   However, if the primary air is increased in order to improve the combustion performance, the problem arises that the flow rate of the mixed gas increases and the flame is easily lifted. Therefore, in Patent Document 1, as shown in FIG. 8, a pot 101 is proposed in which a flame holding rod 150 is provided in the middle of the outer peripheral surface of the flame opening portion to prevent flame lift. In such a stove 101, the gas flow ejected from the flame opening 102 is disturbed by the flame 150 at the base end of the flame and becomes a vortex, so that optimum flame holding properties are ensured and the flame mouth 102 is formed. Flame lift is suppressed. Further, as shown in FIG. 8, the flame formed in the flame mouth portion is at the outer peripheral surface of the flame mouth portion at the time of the minimum input (input: fuel gas supply amount per unit time (kcal / h)). The upper end “a” and the lower end “b” serve as a base to hold the flame.

特開2001−248809号公報JP 2001-248809 A

しかしながら、強火力から弱火力に向け急激に火力調節を行うと、供給ガス圧の圧力変動により一瞬最小インプットより小さいインプットとなり、図9に示すように、火炎が内側に減退し鍔150に衝突して吹き消えてしまうという問題点がある。そこで、最小インプットをやや余裕を持たせて設定し、強火力から弱火力への急激な火力調節が行われた場合であっても、火炎を上端aと下端bとを基部として保炎するという対策が講じられている。しかし、かかる場合、必然的に上端aと下端bとを基部として保炎できる限界のガス量よりも大きくせざるを得ないという問題点が生じる。   However, if the thermal power is suddenly adjusted from the strong thermal power to the weak thermal power, the input will be smaller than the minimum input for a moment due to the pressure fluctuation of the supply gas pressure, and as shown in FIG. There is a problem that it blows away. Therefore, the minimum input is set with a slight margin, and even when a rapid thermal power adjustment from a strong thermal power to a weak thermal power is performed, the flame is held on the basis of the upper end a and the lower end b. Measures are taken. However, in such a case, there arises a problem that the amount of gas must inevitably be larger than the limit amount of gas that can hold the flame with the upper end a and the lower end b as the base.

本発明は、このような問題点を解消するためになされたものであり、強火力から弱火力へ火力調節した時の保炎性を向上させ、かつ、最小インプットを小さく設定できるようにすることのできるこんろを提供することを目的とするものである。   The present invention has been made to solve such problems, to improve the flame holding property when adjusting the heating power from a strong heating power to a low heating power, and to be able to set the minimum input small. The purpose is to provide a stove that can be used.

上記課題を解決する本発明の請求項1に記載のこんろは、
バーナヘッドの載置面が形成されるバーナ本体と、
当該バーナ本体の載置面上に載置され、外周部に複数の炎口からなる炎口部が形成されるバーナヘッドと、
バーナヘッドの炎口部の外周面の最大外径よりも大径に形成されるとともに、当該バーナヘッドの上端部全周にわたって設けられ、上記炎口部への煮汁等の滴下を防ぐひさし部を有し、
当該ひさし部から複数の突状を放射状にかつ下方に突出して設けて、互いに隣接する突条間に上記各炎口を形成するとともに、
上記ひさし部の下面と、各突条の外周縁と、上記バーナ本体の載置面上面とに囲まれた空間に、上記炎口部からの火炎を保炎するための保炎部を形成したこんろにおいて、
上記各突条の下部外周縁を上部外周縁よりも内側に凹ませて下部外周縁と上部外周縁との境界に段差を形成し、
上記突条の上部外周縁を上方ほど内側となるように傾斜させるとともに、
上記保炎部を、上記ひさし部下面と、突条の上部外周縁とで囲まれた上部保炎部と、上記段差の下面と下部外周縁と上記載置面上面とで囲まれた下部保炎部とにより形成することを要旨とする。
The stove according to claim 1 of the present invention for solving the above-mentioned problem is
A burner body on which the mounting surface of the burner head is formed;
A burner head that is placed on the placement surface of the burner body and in which a flame opening portion comprising a plurality of flame openings is formed on the outer periphery; and
An eaves portion that is formed larger than the maximum outer diameter of the outer peripheral surface of the flame mouth portion of the burner head and that is provided over the entire circumference of the upper end portion of the burner head, and prevents dripping of broth or the like into the flame mouth portion. Have
A plurality of protrusions are provided radially and downwardly projecting from the eaves part, and each flame port is formed between the adjacent protrusions, and
In the space surrounded by the lower surface of the eaves portion, the outer peripheral edge of each protrusion, and the upper surface of the mounting surface of the burner body, a flame holding portion for holding the flame from the flame opening was formed. In the stove,
The lower outer peripheral edge of each protrusion is recessed inward from the upper outer peripheral edge to form a step at the boundary between the lower outer peripheral edge and the upper outer peripheral edge,
Inclining the upper outer periphery of the ridge so as to be inward as it goes upward,
The flame holding portion includes an upper flame holding portion surrounded by the lower surface of the eaves portion and an upper outer peripheral edge of the ridge, a lower holding portion surrounded by the lower surface of the step, the lower outer peripheral edge, and the upper surface of the mounting surface. The gist is to form with a flame part.

また、本発明の請求項2に記載のこんろは、請求項1に記載のこんろにおいて、
上記炎口部の炎口配列の途中に排気逃し用の無炎口部を設け、
当該無炎口部の下部を上部よりも凹ませて段差を形成し、
当該無炎口部の段差の下方にのみ火移り炎口を設け、
上記段差の下面と無炎口部の外周面と上記バーナ本体の載置面とで囲まれた空間に、上記火移り炎口からの火炎を保持する火移り炎用保炎部を形成するとともに、
当該火移り炎口上の段差を、他の部分よりも下方に延びる垂れ下がりとしたことを要旨とする。
The stove according to claim 2 of the present invention is the stove according to claim 1,
In the middle of the flame mouth arrangement of the above-mentioned flame mouth portion, a flameless mouth portion for exhaust escape is provided,
The lower part of the flameless mouth is recessed from the upper part to form a step,
Provide a flame transfer port only below the step of the flameless port,
In the space surrounded by the lower surface of the step, the outer peripheral surface of the flameless mouth portion, and the mounting surface of the burner body, and forming a flame holding portion for the fire transfer flame that holds the flame from the fire transfer flame mouth ,
The gist is that the level difference on the flame transfer flame mouth is a sag that extends downward from other portions.

上記構成を有する本発明の請求項1に記載のこんろは、炎口部の外周面に形成される保炎部を上下に分割して上部保炎部および下部保炎部をそれぞれ形成したため、強火から弱火へのすばやい火力調節時にインプットが設定値の最小インプットよりも小さくなっても、火炎を一瞬上下に分割しそれぞれの保炎部で保炎することができる。すなわち、強火力から弱火力へ火力調節する圧力変動時にインプットが最小インプットよりも小さくなった時には、火炎を、上部保炎部で保炎される上部炎と、下部保炎部で保炎される下部炎とに分割して保炎する。従って、インプットが最小火力時よりも小さくなる圧力変動時の保炎性が向上するため、最小インプットを小さく設定できこんろのターンダウン性能が向上する。   The stove according to claim 1 of the present invention having the above-described configuration is formed by dividing the flame holding portion formed on the outer peripheral surface of the flame opening portion into upper and lower portions and forming the upper flame holding portion and the lower flame holding portion, respectively. Even if the input becomes smaller than the minimum input of the set value at the time of quick firepower adjustment from a high fire to a low fire, the flame can be divided up and down for a moment and the flame can be held in each flame holding section. That is, when the input is smaller than the minimum input when the pressure is changed from high to low, the flame is held in the upper flame holding portion and the lower flame holding portion. Divide into lower flame and hold the flame. Therefore, since the flame holding property at the time of pressure fluctuation when the input becomes smaller than that at the minimum heating power is improved, the minimum input can be set to be small, and the turn-down performance of the stove is improved.

また、突条の上部外周縁を上方ほど内側となるように傾斜させることにより、上部保炎部をその縦断面が三角形状となるようにしたことから、上部保炎部と下部保炎部は、共通の段差を基部として分割炎を保持するので、圧力変動時に内側に減退する火炎を上下に分割しやすく、しかも分割された上下の火炎がこの段差で互いに保炎しあって吹き消えることを確実に防止できる。さらに、上部外周縁を上方ほど内側となるように傾斜させているため、ひさし部と上部外周縁とで囲まれる上部保炎部が鋭角となり火炎の保持力が一層向上する。   In addition, by tilting the upper outer peripheral edge of the ridge so as to be inward as it goes upward, the vertical flame section of the upper flame holding part is triangular, so the upper flame holding part and the lower flame holding part are Since the split flame is held with the common step as the base, it is easy to split the flame that declines inward when pressure changes, and the divided upper and lower flames hold each other at this step and blow out. It can be surely prevented. Furthermore, since the upper outer peripheral edge is inclined so as to be inward as it goes upward, the upper flame-holding part surrounded by the eaves part and the upper outer peripheral edge becomes an acute angle, and the holding power of the flame is further improved.

また、バーナヘッドの最大外径よりも大径のひさし部をバーナヘッドの上端部全周にわたり設けているので、炎口部への煮汁等の滴下を確実に防止できるだけでなく、上部保炎部をより大きく形成して火炎分割時の保炎力を一層大きくすることができる。   In addition, since the eaves part with a diameter larger than the maximum outer diameter of the burner head is provided over the entire circumference of the upper end of the burner head, it is possible not only to reliably prevent dripping of the broth etc. into the flame opening, but also the upper flame holding part. Can be formed larger to further increase the flame holding power when dividing the flame.

本発明の請求項2に記載のこんろバーナは、火移り炎口上に垂れ下がり部を形成することによって、火移り炎用保炎部を狭くし、燃焼ガスをこの狭い下部保炎部から広い空間へと燃焼ガスへ噴出させることから、その燃料ガスを大きく減速させる効果が生じるので、火移り炎のリフトを抑制できる。このため、常に良好な火移り炎を形成でき火力を絞った時でも安定した火移りを行える。   In the stove burner according to claim 2 of the present invention, the flame holding portion for the flame is narrowed by forming a hanging portion on the flame port, and the combustion gas is widened from the narrow lower flame holding portion. Since the fuel gas is jetted into the combustion gas, the fuel gas has an effect of greatly decelerating, so that it is possible to suppress the lift of the flame. For this reason, a good fire transfer flame can be formed at all times, and stable fire transfer can be performed even when the fire power is reduced.

以上説明した本発明の構成・作用を一層明らかにするために、以下本発明のこんろの好適な実施形態について、図1〜図7を用いて説明する。   In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of the stove according to the present invention will be described below with reference to FIGS.

本発明の一実施形態に係るこんろ1は、図1に示されるように、燃料ガスと一次空気を混合するリング状の混合部11を有するバーナ本体10と、このバーナ本体10の上に載置されるバーナヘッド20を有する。バーナ本体10の混合部11は、ガスノズル4から燃料ガスが供給されるスロート部12と連通している。バーナヘッド20の中央には、円筒部27が形成される。また、バーナ本体10の混合部11を形成する円筒状の内壁は、燃焼時の二次空気通路を兼ねたバーナヘッド20の位置決めガイド13となり、バーナヘッド20の円筒部27はこの位置決めガイド13に挿入される。バーナヘッド20の円筒部27の外周には、リング状に混合空間28が設けられており、バーナヘッド20をバーナ本体10に載置すると、混合部11と混合空間28とが一体となって環状混合気室40を形成する。   As shown in FIG. 1, a stove 1 according to an embodiment of the present invention is mounted on a burner body 10 having a ring-shaped mixing portion 11 that mixes fuel gas and primary air, and the burner body 10. The burner head 20 is placed. The mixing portion 11 of the burner body 10 communicates with a throat portion 12 to which fuel gas is supplied from the gas nozzle 4. A cylindrical portion 27 is formed at the center of the burner head 20. The cylindrical inner wall forming the mixing portion 11 of the burner body 10 serves as a positioning guide 13 for the burner head 20 that also serves as a secondary air passage during combustion. The cylindrical portion 27 of the burner head 20 is connected to the positioning guide 13. Inserted. A mixing space 28 is provided in a ring shape on the outer periphery of the cylindrical portion 27 of the burner head 20. When the burner head 20 is placed on the burner body 10, the mixing portion 11 and the mixing space 28 are integrated into an annular shape. A gas mixture chamber 40 is formed.

バーナヘッド20の円筒状外周面には、炎口2を形成するための突条3が放射状にかつ下方に突出して設けられる。互いに隣接する突条3,3の間に炎口溝21が形成され、これにより、上記バーナヘッド20の外周面に、多数の炎口溝21が放射状に所定ピッチで形成される。このバーナヘッド20をバーナ本体10の載置面に載置されることによりバーナヘッドの外周面に多数の炎口2が配列されて炎口部30を形成する。また、図2に示されるように、炎口溝21の配列の途中に(例えば、4個おきに)、炎口2での火炎により発生した燃焼排気を外部へ排出するための排気逃し用無炎口部22が形成される。尚、スロート部12の基端部に設けられたガスノズル4のまわりには、燃料ガスの噴出に伴って燃焼用一次空気を吸引する一次空気吸入口14が形成される。   On the cylindrical outer peripheral surface of the burner head 20, protrusions 3 for forming the flame mouth 2 are provided radially and projecting downward. A flame opening groove 21 is formed between the protrusions 3 and 3 adjacent to each other. As a result, a large number of flame opening grooves 21 are radially formed on the outer peripheral surface of the burner head 20 at a predetermined pitch. By placing this burner head 20 on the mounting surface of the burner body 10, a number of flame ports 2 are arranged on the outer peripheral surface of the burner head to form a flame port portion 30. Further, as shown in FIG. 2, in the middle of the arrangement of the throat grooves 21 (for example, every four), there is no need for exhaust escape for exhausting the combustion exhaust generated by the flame at the crater 2 to the outside. A flame opening 22 is formed. A primary air intake port 14 is formed around the gas nozzle 4 provided at the base end portion of the throat portion 12 to suck the combustion primary air as the fuel gas is ejected.

上記各突条3は、その下部を上部よりも内側に凹むように形成され、これにより各突条3の外周縁60を上部外周縁60aと下部外周縁60bとに上下に分割するとともに、それら各外周縁60a、60bとの間に段差23を形成するようになっている。これにより、バーナヘッド20の各突条3の外周縁60と上記ひさし部26の下面と、バーナ本体10のバーナヘッド20の載置面とに囲まれた空間に炎を保炎するための保炎部24を形成し、この保炎部24を、上部外周縁60aとひさし部26の下面とで囲まれた三角形状の上部保炎部24aと、段差23の下面と突条3の下部外周縁60bと上記載置面とで囲まれた下部保炎部24bとに分割する。   Each of the protrusions 3 is formed so that the lower part is recessed inward from the upper part, whereby the outer peripheral edge 60 of each protrusion 3 is vertically divided into an upper outer peripheral edge 60a and a lower outer peripheral edge 60b. A step 23 is formed between the outer peripheral edges 60a and 60b. As a result, the flame is held in a space surrounded by the outer peripheral edge 60 of each protrusion 3 of the burner head 20, the lower surface of the eaves portion 26, and the mounting surface of the burner head 20 of the burner body 10. The flame holding portion 24 is formed, and the flame holding portion 24 is surrounded by a triangular upper flame holding portion 24 a surrounded by the upper outer peripheral edge 60 a and the lower surface of the eaves portion 26, the lower surface of the step 23 and the lower portion of the ridge 3. It divides | segments into the lower flame holding part 24b enclosed by the periphery 60b and the said mounting surface.

一方、上記無炎口部22の中央部下端部には、図2に示されるように、複数の火移り炎口5が周方向に配列して設けられる。また、上記無炎口部22の外周面も同様に、下部を上部よりも内側に凹ませ、上部と下部との間に段差が設けられているが、上記各火移り炎口5上の段差は炎口部3の段差23よりも下方に伸ばされて垂れ下がり部25にされている。これにより、火移り炎口5付近に、炎口部3の下部保炎部24bよりも上下に狭くされた火移り炎用保炎部24cが形成される。   On the other hand, as shown in FIG. 2, a plurality of fire transfer flame ports 5 are arranged in the circumferential direction at the lower end of the central portion of the flameless port portion 22. Similarly, the outer peripheral surface of the flameless mouth portion 22 has a lower portion recessed inward from the upper portion, and a step is provided between the upper portion and the lower portion. Is extended downward from the level difference 23 of the flame opening 3 to form a hanging portion 25. As a result, the flame-holding portion 24c for the fire-transfer flame that is narrower in the vertical direction than the lower flame-holding portion 24b of the flame-portion portion 3 is formed in the vicinity of the flame-transfer flame mouth 5.

上述したこんろ1によれば、バーナヘッド20の外周面に形成された保炎部24を段差23を境に上下に分割し、それぞれに火炎を保炎できる上部保炎部24aと下部保炎部24bを形成しているため、強火から弱火への火力調節時にインプットが設定値の最小インプットよりも小さくなった際には、火炎を一瞬上下に分割し上部保炎部24aと下部保炎部24bで保炎することができる。すなわち、最小火力時には、図1に示すように、上記炎口部30の上端aと下端bとを基部として保炎部24全体で火炎を保持するが、強火力から弱火力へすばやく火力調節した圧力変動時にインプットがさらに小さくなっても、図3に示すように、上端aと段差23とを基部とする上部保炎部24aで保炎される上部炎と、下端bと段差23とを基部とする下部保炎部24bとで保炎される下部炎とに火炎を分割して保持できる。   According to the above-described stove 1, the flame holding portion 24 formed on the outer peripheral surface of the burner head 20 is divided into the upper and lower sides with the step 23 as a boundary, and the upper flame holding portion 24a and the lower flame holding flame that can hold the flames respectively. Since the part 24b is formed, when the input becomes smaller than the minimum input of the set value at the time of adjusting the heating power from the high fire to the low fire, the upper flame holding part 24a and the lower flame holding part are divided by dividing the flame for a moment. Flames can be held with 24b. That is, at the time of the minimum heating power, as shown in FIG. 1, the flame holding part 24 as a whole is held with the upper end a and the lower end b of the flame opening 30 as the base, but the heating power is quickly adjusted from strong heating power to weak heating power. As shown in FIG. 3, even if the input is further reduced when the pressure fluctuates, the upper flame held by the upper flame holding portion 24a having the upper end a and the step 23 as the base, the lower end b and the step 23 as the base The flame can be divided and held in the lower flame held by the lower flame holding portion 24b.

このような火力調節時の火炎の変化について図4〜図6を用いて詳述する。
強火力時には、図4に示すように、上端aと下端bとを基部として保炎部24全体で大きな火炎が保持される。そして、弱火力へとすばやく火力調節すると、一瞬インプットが設定値の最小インプットよりも小さくなって火炎が内側に減退するが、この際は、図5に示すように、小さな火炎を上下に分割して、上部炎を上端aと段差23とを基部として上部保炎部24aで保持し、下部炎を下端bと段差23とを基部として下部保炎部24bで保持する。弱火力になると、図6に示すように、上端aと下端bとを基部として小さな火炎が保持される。従って、インプットが最小火力時よりも小さくなる圧力変動時の保炎性が向上するため、最小インプットを小さく設定できターンダウン性能が向上し使い勝手の良いこんろ1となる。
The change of the flame at the time of such a thermal power adjustment is explained in full detail using FIGS.
At the time of strong heating, as shown in FIG. 4, a large flame is held in the entire flame holding portion 24 with the upper end a and the lower end b as the base. If the firepower is quickly adjusted to a weak firepower, the input will become smaller than the minimum input value for a moment and the flame will fade inward. In this case, as shown in FIG. The upper flame is held by the upper flame holding portion 24a with the upper end a and the step 23 as the base, and the lower flame is held by the lower flame holding portion 24b with the lower end b and the step 23 as the base. When the heating power is weak, a small flame is held with the upper end a and the lower end b as the base, as shown in FIG. Therefore, since the flame holding property at the time of pressure fluctuation where the input becomes smaller than that at the minimum heating power is improved, the minimum input can be set to be small, the turn-down performance is improved, and the convenient stove 1 is provided.

また、突条3の上部外周縁の上部を上方ほど内側となるように傾斜させて、上部保炎部24aをその縦断面が三角形状の凹空間となるようにしたため、上部保炎部24aと下部保炎部24bは、共通の段差23を基部として分割炎を保持するので、圧力変動時に内側に減退する火炎を上下に分割しやすく、しかも分割された上下の火炎がこの段差23で互いに保炎しあって吹き消えることを確実に防止できる。また、突条3の上部外周縁の上部を上方ほど内側となるように傾斜させることによって上部保炎部24aを大きく形成し、突条3の下部を上部よりも内側にくぼませることによって下部保炎部24bを大きく形成しているため、火炎分割時の保持力が大きなものとなる。さらに、炎口部30の外周面の上方に外周面の最大外径よりも大きな径のひさし部26を設けているので、炎口部30への煮汁等の滴下を確実に防止して炎口詰まりを防止できるだけでなく、上部保炎部24aをより大きく形成することができ火炎分割時の保持力が一層大きくなる。さらに、突条3の上部外周縁60aの外周面の上部を上方ほど内側となるように傾斜させているため、ひさし部26と上部外周縁60aとで囲まれる上部保炎部24aが鋭角となり火炎の保持力が向上する。また、上部外周縁60aの上部を上方ほど内側となるように傾斜させて、炎口面を斜め上向きに形成して炎口面を燃料ガスの噴出方向と直交する側に傾けているため、炎口出口面積を小さくでき、より一層保炎性能が向上するという効果もある。   In addition, the upper flame retaining portion 24a is inclined so that the upper portion of the upper outer peripheral edge of the ridge 3 is inward as it extends upward, so that the vertical cross section of the upper flame retaining portion 24a becomes a triangular concave space. Since the lower flame holding portion 24b holds the divided flame with the common step 23 as a base, it is easy to divide the flame that declines inward when the pressure fluctuates into the upper and lower sides, and the divided upper and lower flames are held together by this step 23. It can surely prevent the flames from blowing out. Further, the upper flame retaining part 24a is formed larger by inclining the upper part of the upper outer peripheral edge of the ridge 3 so as to be inward as it extends upward, and the lower part of the ridge 3 is recessed below the upper part by indenting the lower part. Since the flame part 24b is formed large, the holding force at the time of flame division becomes large. Furthermore, since the eaves portion 26 having a diameter larger than the maximum outer diameter of the outer peripheral surface is provided above the outer peripheral surface of the flame opening 30, it is possible to reliably prevent dripping of broth or the like into the flame opening 30. Not only can clogging be prevented, but the upper flame holding portion 24a can be formed larger, and the holding force at the time of flame division is further increased. Furthermore, since the upper part of the outer peripheral surface of the upper outer peripheral edge 60a of the ridge 3 is inclined so as to be inward, the upper flame holding part 24a surrounded by the eaves part 26 and the upper outer peripheral edge 60a has an acute angle and flame. The holding power is improved. In addition, since the upper part of the upper outer peripheral edge 60a is inclined so as to be inward as the upper side is formed, the flame front surface is formed obliquely upward, and the flame front surface is inclined to the side perpendicular to the fuel gas ejection direction. The mouth outlet area can be reduced, and the flame holding performance is further improved.

尚、火力調整操作していない一定火力である強火力時や中火力時においては、炎口2から噴出するガスの流れが段差23により火炎の基端部において乱され渦流状となるために最適な保炎性が確保され炎口2に形成される火炎のリフトは抑制される。   It should be noted that the flow of gas ejected from the flame outlet 2 is disturbed at the base end portion of the flame by the step 23 and becomes a vortex in the case of a strong heating power or a constant heating power that is not controlled by the heating power. Flame holding property is ensured, and the lift of the flame formed at the flame outlet 2 is suppressed.

また、無炎口部22においては、火移り炎口5上に段差23から下方に伸びる垂れ下がり部25を形成しているため、火移り炎口5付近の火移り炎用保炎部24cが、炎口部3の下部炎口部24bよりも狭くされ、この狭い火移り炎用保炎部24cから燃料ガスが広い空間へと噴出するため大きな減速効果が生じるので、火移り炎のリフトを抑制できる。このため、常に良好な火移り炎を形成でき火力を絞った時でも安定した火移りを行える。ところで、段差23全体にわたって垂れ下がり部25を形成すると燃焼空間が狭くなりすぎ、酸欠のために燃焼性能が悪化してしまうが、本実施形態のこんろ1では、段差23の一部に設けているだけなので燃焼状態を良好に維持できる。また、こんろ1には、図示しない火炎検出用の熱電対が炎口2と向かい合って設けられており、図7に示すように、この熱電対と向かい合う段差23に火移り炎口5上のものと同様に、下方に伸びる垂れ下がり部25を形成してそこでの火炎のリフトを防止して熱電対を常に安定して加熱できるようにしている。尚、図7中では、×印で熱電対の感温部の設置位置を示した。   In addition, in the flameless port portion 22, a drooping portion 25 extending downward from the step 23 is formed on the fire transfer flame port 5, so that the flame holding portion 24 c for the fire transfer flame near the fire transfer flame port 5 is Since the fuel gas is jetted into a wide space from the narrow flame-holding portion 24c for the fire-transfer flame, which is made narrower than the lower flame-portion portion 24b of the flame-portion portion 3, a large deceleration effect is produced, so that the lift of the fire-transfer flame is suppressed. it can. For this reason, a good fire transfer flame can be formed at all times, and stable fire transfer can be performed even when the fire power is reduced. By the way, if the hanging part 25 is formed over the entire step 23, the combustion space becomes too narrow, and the combustion performance deteriorates due to lack of oxygen. However, in the stove 1 of the present embodiment, it is provided in a part of the step 23. The combustion state can be maintained satisfactorily. Further, the stove 1 is provided with a flame detection thermocouple (not shown) facing the flame mouth 2, and as shown in FIG. Similar to the above, a hanging portion 25 extending downward is formed to prevent the flame from being lifted so that the thermocouple can always be heated stably. In addition, in FIG. 7, the installation position of the thermosensitive part of a thermocouple was shown by x mark.

以上本発明の実施形態について説明したが、本発明はこうした実施形態に何等限定されるものではなく、本発明の要旨を逸脱しない範囲において、種々なる態様で実施し得ることは勿論である。   Although the embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and it is needless to say that the present invention can be implemented in various modes without departing from the gist of the present invention.

本実施形態としてのこんろの要部断面図である。(弱火力時)It is principal part sectional drawing of the stove as this embodiment. (Low power) 炎口部及び無炎口部の拡大正面図である。It is an enlarged front view of a flame mouth part and a flameless mouth part. 本実施形態としてのこんろの要部断面図である。(圧力変動時)It is principal part sectional drawing of the stove as this embodiment. (When pressure changes) 本実施形態としてのこんろの炎口付近の拡大図である。(強火力時)It is an enlarged view of the vicinity of the stove of the stove as this embodiment. (High heat) 本実施形態としてのこんろの炎口付近の拡大図である。(圧力変動時)It is an enlarged view of the vicinity of the stove of the stove as this embodiment. (When pressure changes) 本実施形態としてのこんろの炎口付近の拡大図である。(弱火力時)It is an enlarged view of the vicinity of the stove of the stove as this embodiment. (Low power) 熱電対取付位置の説明図である。It is explanatory drawing of a thermocouple attachment position. 従来例としてのこんろバーナの断面図である。(弱火力時)It is sectional drawing of the stove burner as a prior art example. (Low power) 従来例としてのこんろバーナの断面図である。(圧力変動時)It is sectional drawing of the stove burner as a prior art example. (When pressure changes)

符号の説明Explanation of symbols

1…こんろ、2…炎口、3…突条、5…火移り炎口、10…バーナ本体、20…バーナヘッド、22…無炎口部、23…段差、24a…上部保炎部、24b…下部保炎部、25…垂れ下がり部、26…ひさし部、30…炎口部、60a…上部外周縁、60b…下部外周縁。 DESCRIPTION OF SYMBOLS 1 ... Stove, 2 ... Flame port, 3 ... Projection, 5 ... Fire transfer flame port, 10 ... Burner main body, 20 ... Burner head, 22 ... Flameless port part, 23 ... Level difference, 24a ... Upper flame holding part, 24b ... lower flame holding part, 25 ... hanging part, 26 ... eaves part, 30 ... flame opening part, 60a ... upper outer periphery, 60b ... lower outer periphery.

Claims (2)

バーナヘッドの載置面が形成されるバーナ本体と、
当該バーナ本体の載置面上に載置され、外周部に複数の炎口からなる炎口部が形成されるバーナヘッドと、
バーナヘッドの炎口部の外周面の最大外径よりも大径に形成されるとともに、当該バーナヘッドの上端部全周にわたって設けられ、上記炎口部への煮汁等の滴下を防ぐひさし部を有し、
当該ひさし部から複数の突状を放射状にかつ下方に突出して設けて、互いに隣接する突条間に上記各炎口を形成するとともに、
上記ひさし部の下面と、各突条の外周縁と、上記バーナ本体の載置面上面とに囲まれた空間に、上記炎口部からの火炎を保炎するための保炎部を形成したこんろにおいて、
上記各突条の下部外周縁を上部外周縁よりも内側に凹ませて下部外周縁と上部外周縁との境界に段差を形成し、
上記突条の上部外周縁を上方ほど内側となるように傾斜させるとともに、
上記保炎部を、上記ひさし部下面と、突条の上部外周縁とで囲まれた上部保炎部と、上記段差の下面と下部外周縁と上記載置面上面とで囲まれた下部保炎部とにより形成することを特徴とするこんろ。
A burner body on which the mounting surface of the burner head is formed;
A burner head that is placed on the placement surface of the burner body and in which a flame opening portion comprising a plurality of flame openings is formed on the outer periphery; and
An eaves portion that is formed larger than the maximum outer diameter of the outer peripheral surface of the flame mouth portion of the burner head and that is provided over the entire circumference of the upper end portion of the burner head, and prevents dripping of broth or the like into the flame mouth portion Have
A plurality of protrusions are provided radially and downwardly projecting from the eaves part, and each flame port is formed between the adjacent protrusions, and
In the space surrounded by the lower surface of the eaves portion, the outer peripheral edge of each protrusion, and the upper surface of the mounting surface of the burner body, a flame holding portion for holding the flame from the flame opening was formed. In the stove,
The lower outer peripheral edge of each protrusion is recessed inward from the upper outer peripheral edge to form a step at the boundary between the lower outer peripheral edge and the upper outer peripheral edge,
Inclining the upper outer periphery of the ridge so as to be inward as it goes upward,
The flame holding portion includes an upper flame holding portion surrounded by the lower surface of the eaves portion and an upper outer peripheral edge of the ridge, a lower holding portion surrounded by the lower surface of the step, the lower outer peripheral edge, and the upper surface of the mounting surface. It is characterized by being formed by the flame.
上記炎口部の炎口配列の途中に排気逃し用の無炎口部を設け、
当該無炎口部の下部を上部よりも凹ませて段差を形成し、
当該無炎口部の段差の下方にのみ火移り炎口を設け、
上記段差の下面と無炎口部の外周面と上記バーナ本体の載置面とで囲まれた空間に、上記火移り炎口からの火炎を保持する火移り炎用保炎部を形成するとともに、
当該火移り炎口上の段差を、他の部分よりも下方に延びる垂れ下がりとした請求項1に記載のこんろ。

In the middle of the flame mouth arrangement of the above-mentioned flame mouth portion, a flameless mouth portion for exhaust escape is provided,
The lower part of the flameless mouth is recessed from the upper part to form a step,
Provide a flame transfer port only below the step of the flameless port,
In the space surrounded by the lower surface of the step, the outer peripheral surface of the flameless mouth portion, and the mounting surface of the burner body, and forming a flame holding portion for the fire transfer flame that holds the flame from the fire transfer flame mouth ,
The stove according to claim 1, wherein the step on the fire transfer flame mouth is a sag that extends downward from other portions.

JP2007285609A 2007-11-02 2007-11-02 Cooking stove Pending JP2008089299A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010121926A (en) * 2008-10-23 2010-06-03 Rinnai Corp Burner for cooking stove
JP2019174083A (en) * 2018-03-29 2019-10-10 リンナイ株式会社 Burner for cooking stove

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010121926A (en) * 2008-10-23 2010-06-03 Rinnai Corp Burner for cooking stove
JP2019174083A (en) * 2018-03-29 2019-10-10 リンナイ株式会社 Burner for cooking stove
JP7016752B2 (en) 2018-03-29 2022-02-07 リンナイ株式会社 Burner for stove

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