JP2020094714A - Burner for cooking stove, and gas cooking stove - Google Patents

Burner for cooking stove, and gas cooking stove Download PDF

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Publication number
JP2020094714A
JP2020094714A JP2018231350A JP2018231350A JP2020094714A JP 2020094714 A JP2020094714 A JP 2020094714A JP 2018231350 A JP2018231350 A JP 2018231350A JP 2018231350 A JP2018231350 A JP 2018231350A JP 2020094714 A JP2020094714 A JP 2020094714A
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burner
flame
bottom wall
stove
burner portion
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JP7115969B2 (en
Inventor
悠輔 中村
Yusuke Nakamura
悠輔 中村
荒松　政男
Masao Aramatsu
政男 荒松
周作 林
Shusaku Hayashi
周作 林
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Rinnai Corp
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Rinnai Corp
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Priority to JP2018231350A priority Critical patent/JP7115969B2/en
Priority to TW108124434A priority patent/TWI794528B/en
Priority to CN201910908477.2A priority patent/CN111306541A/en
Publication of JP2020094714A publication Critical patent/JP2020094714A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14003—Special features of gas burners with more than one nozzle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

To prevent attachment of boiled-over liquid to burner ports 61 of a lower-stage burner portion 6, in a burner for a cooking stove which includes an annular upper-stage burner portion 5, and the annular lower-stage burner portion 6 disposed at a lower part of the upper-stage burner portion 5 and concentric to the upper-stage burner portion 5, and in which the upper-stage burner portion 5 and the lower-stage burner portion 6 are respectively composed of inner flame-type burners having a plurality of burner ports 51, 61 opened on inner peripheral portions toward a radial inner part at intervals in a circumferential direction.SOLUTION: An inner diameter D1 of a bottom wall portion 52 of an upper-stage burner portion 5 is set to a diameter D2 of an inner peripheral portion on which burner ports 61 of a lower-stage burner portion 6 are opened, or less. Preferably, an inner peripheral edge of the bottom wall portion 52 of the upper-stage burner portion 5 is provided with an eaves portion 52a extended downward.SELECTED DRAWING: Figure 2

Description

本発明は、環状の上段バーナ部と、上段バーナ部の下方に配置される、上段バーナ部と同心の環状の下段バーナ部とを備えるコンロ用バーナ並びにこのコンロ用バーナを備えるガスコンロに関する。 The present invention relates to a stove burner including an annular upper burner portion and an annular lower burner portion concentric with the upper burner portion, which is disposed below the upper burner portion, and a gas stove including the stove burner.

従来、この種のコンロ用バーナとして、上段バーナ部と下段バーナ部を、夫々、内周部に径方向内方に向けて開口する炎口を周方向の間隔を存して複数有する内炎式バーナで構成したものが知られている（例えば、特許文献１参照）。そして、このものでは、下段バーナ部の炎口が開口する内周部の径を上段バーナ部の底壁部の内径よりも小さくしている。 Conventionally, as a burner for a stove of this kind, an internal flame type having an upper burner portion and a lower burner portion, each having a plurality of flame openings that open radially inward on the inner peripheral portion at a circumferential interval. A burner is known (for example, see Patent Document 1). In this structure, the diameter of the inner peripheral portion where the flame opening of the lower burner portion is opened is made smaller than the inner diameter of the bottom wall portion of the upper burner portion.

ところで、コンロ用バーナで加熱する調理容器からの煮こぼれを生ずると、調理容器の底面を伝って煮こぼれ汁が滴下する。そして、上記従来例のコンロ用バーナでは、調理容器の底面を伝って滴下した煮こぼれ汁が下段バーナ部の炎口に付着しやすい。そして、下段バーナ部は手が届きにくく清掃しづらいため、下段バーナの炎口に煮こぼれ汁が付着堆積して、炎口の目詰まりを生ずる恐れがある。 By the way, when spillage occurs from the cooking container heated by the burner for the stove, the spilled juice drips along the bottom surface of the cooking container. In the burner for a stove according to the conventional example described above, the spilled juice dripping along the bottom surface of the cooking container is likely to adhere to the flame opening of the lower burner section. Since the lower burner is hard to reach and difficult to clean, spilled juice may adhere to and accumulate on the flame mouth of the lower burner, resulting in clogging of the flame mouth.

実開平２−１３３５１５号公報Japanese Utility Model Publication No. 2-133515

本発明は、以上の点に鑑み、内炎式バーナで構成される上下２段のバーナ部を備えるコンロ用バーナであって、下段バーナ部の炎口への煮こぼれ汁の付着を防止できるようにしたものを提供することをその課題としている。 In view of the above points, the present invention is a burner for a stove including an upper and lower two-stage burner configured by an internal flame burner, and can prevent sticking of spilled juice to the flame mouth of the lower burner. The challenge is to provide the products that are

上記課題を解決するために、本発明は、環状の上段バーナ部と、上段バーナ部の下方に配置される、上段バーナ部と同心の環状の下段バーナ部とを備えるコンロ用バーナであって、上段バーナ部と下段バーナ部は、夫々、内周部に径方向内方に向けて開口する炎口を周方向の間隔を存して複数有する内炎式バーナで構成されるものにおいて、上段バーナ部の底壁部の内径は、下段バーナ部の炎口が開口する内周部の径以下であることを特徴とする。また、本発明のガスコンロは、上記本発明のコンロ用バーナを備えることを特徴とする。 In order to solve the above problems, the present invention is a burner for a stove including an annular upper burner portion and an annular lower burner portion concentric with the upper burner portion, which is disposed below the upper burner portion, The upper burner portion and the lower burner portion each include an internal flame type burner having a plurality of flame openings that open radially inward in the inner peripheral portion at circumferential intervals, The inner diameter of the bottom wall portion of the portion is less than or equal to the diameter of the inner peripheral portion where the flame opening of the lower burner portion opens. Further, a gas stove according to the present invention is characterized by including the burner for a stove according to the present invention.

本発明のコンロ用バーナによれば、下段バーナ部の炎口が開口する内周部は、上方から見て上段バーナ部の底壁部の下に隠れるため、調理容器の底面を伝って滴下する煮こぼれ汁が下段バーナ部の炎口に付着することを防止できる。 According to the burner for a stove of the present invention, the inner peripheral portion where the flame opening of the lower burner portion is opened is hidden under the bottom wall portion of the upper burner portion when viewed from above, and thus drops along the bottom surface of the cooking container. It is possible to prevent the spilled juice from adhering to the flame mouth of the lower burner.

また、本発明においては、上段バーナ部の底壁部の内周縁に下方にのびる庇部が設けられることが望ましい。これによれば、上段バーナ部の底壁部に落下した煮こぼれ汁が底壁部の下面に回り込むことを庇部で防止できる。従って、煮こぼれ汁が上段バーナ部の底壁部の下面に回り込んで下段バーナ部の炎口に落下付着することを防止できる。 Further, in the present invention, it is desirable that an eave portion extending downward is provided on the inner peripheral edge of the bottom wall portion of the upper burner portion. According to this, the eaves can prevent the spilled juice that has fallen on the bottom wall of the upper burner from wrapping around around the bottom surface of the bottom wall. Therefore, it is possible to prevent the spilled juice from wrapping around the lower surface of the bottom wall of the upper burner and dropping and adhering to the flame opening of the lower burner.

更に、本発明において、下段バーナ部の炎口は、径方向内方に向けて下方に傾斜していることが望ましい。これによれば、下段バーナ部の炎口に仮に煮こぼれ汁が落下しても、炎口の内部に煮こぼれ汁は浸入せず、炎口が目詰まりしにくくなる。 Further, in the present invention, it is desirable that the flame port of the lower burner portion be inclined downward inward in the radial direction. According to this, even if the spilled juice falls into the flame mouth of the lower burner portion, the spilled juice does not enter the inside of the flame mouth and the flame mouth is less likely to be clogged.

また、本発明において、上段バーナ部は、底壁部に着脱自在に載置されるバーナヘッドを有し、底壁部とバーナヘッドとの間に炎口が画成されることが望ましい。これによれば、上段バーナ部の炎口に煮こぼれ汁が付着しても、バーナヘッドを取外すことで炎口に付着した煮こぼれ汁を容易に除去できる。 Further, in the present invention, it is preferable that the upper burner portion has a burner head that is detachably mounted on the bottom wall portion, and a flame port is defined between the bottom wall portion and the burner head. According to this, even if the spilled juice adheres to the flame mouth of the upper burner, the spilled juice adhered to the flame mouth can be easily removed by removing the burner head.

本発明の実施形態のコンロ用バーナを備えるガスコンロの要部の斜視図。The perspective view of the important section of the gas stove provided with the burner for the stove of the embodiment of the present invention. 図１のＩＩ−ＩＩ線で切断した断面図。Sectional drawing cut|disconnected by the II-II line of FIG. 図２のＩＩＩ−ＩＩＩ線で切断した切断平面図。The cutting top view cut|disconnected by the III-III line of FIG. 図２のＩＶ−ＩＶ線で切断した切断平面図。The cutting top view cut|disconnected by the IV-IV line of FIG.

図１、図２を参照して、１は、ガスコンロのコンロ本体、２は、コンロ本体１の上面を覆う天板である。ガスコンロには、天板２に開設したバーナ用開口２１に臨ませて、天板２上の五徳３に載せる鍋等の調理容器を加熱するコンロ用バーナ４が設けられている。五徳３は、環状の五徳枠３１と、五徳枠３１に固定した複数の五徳爪３２とを有している。また、天板２上には、バーナ用開口２１内のコンロ用バーナ４との間の隙間を上方から覆うバーナリング２２が載置されている。更に、コンロ本体１内には、コンロ用バーナ４で囲われる中央空間を通して落下する煮こぼれ汁を受ける汁受１１が設けられている。尚、五徳枠３１は、バーナリング２２及び後述する上段バーナ部５を上方から覆う形状に形成されている。 Referring to FIGS. 1 and 2, reference numeral 1 is a gas stove main body, and 2 is a top plate that covers an upper surface of the stove main body 1. The gas stove is provided with a stove burner 4 which faces a burner opening 21 opened in the top plate 2 and heats a cooking container such as a pot placed on the Gotoku 3 on the top plate 2. The Gotoku 3 has a ring-shaped Gotoku frame 31 and a plurality of Gotoku claws 32 fixed to the Gotoku frame 31. Further, a burner ring 22 is mounted on the top plate 2 to cover a gap between the burner opening 21 and the burner burner 4 from above. Further, inside the stove body 1, there is provided a juice receiver 11 for receiving the spilled juice that falls through the central space surrounded by the burner 4 for the stove. The Gotoku frame 31 is formed in a shape that covers the burner ring 22 and an upper burner portion 5 described later from above.

コンロ用バーナ４は、環状の上段バーナ部５と、上段バーナ部５の下方に配置される、上段バーナ部５と同心の環状の下段バーナ部６とを備えている。上段バーナ部５と下段バーナ部６は、夫々、内周部に径方向内方に向けて開口する炎口５１，６１を周方向の間隔を存して複数有する内炎式バーナで構成されている。以下、上段バーナ部５と下段バーナ部６について詳述する。 The stove burner 4 includes an annular upper burner portion 5 and an annular lower burner portion 6 arranged below the upper burner portion 5 and concentric with the upper burner portion 5. The upper burner portion 5 and the lower burner portion 6 are each composed of an internal flame type burner having a plurality of flame openings 51 and 61 opening inward in the radial direction in the inner peripheral portion at intervals in the circumferential direction. There is. Hereinafter, the upper burner section 5 and the lower burner section 6 will be described in detail.

上段バーナ部５は、板金製の底壁部５２と、底壁部５２の外周部に対する接合部から上方に立ち上がる板金製の外周壁部５３と、外周壁部５３の上端部に径方向内方に張り出すように固定される鋳物製の上壁部５４と、上壁部５４と底壁部５２との間の隙間を閉塞するようにして底壁部５２に着脱自在に載置される内周部のバーナヘッド５５とで構成されている。バーナヘッド５５には、その下面から上方に凹入する炎口５１となる溝が周方向の間隔を存して複数形成されている。そして、バーナヘッド５５を底壁部５２に載置することで、溝の下面が底壁部５２により閉塞され、底壁部５２とバーナヘッド５５との間に炎口５１が画成されるようにしている。尚、図３に示す如く、炎口５１は、周方向一方への傾き角を持って径方向内方に開口している。これにより、上段バーナ部５の燃焼炎が周方向一方に旋回し、調理容器の加熱効率が向上する。 The upper burner portion 5 includes a bottom wall portion 52 made of sheet metal, an outer peripheral wall portion 53 made of sheet metal that rises upward from a joint with the outer peripheral portion of the bottom wall portion 52, and a radial inward direction at an upper end portion of the outer peripheral wall portion 53. An upper wall portion 54 made of a casting which is fixed so as to project to the inside, and an inner wall which is detachably mounted on the bottom wall portion 52 so as to close a gap between the upper wall portion 54 and the bottom wall portion 52. It is composed of a burner head 55 in the peripheral portion. The burner head 55 is formed with a plurality of grooves, which serve as the flame ports 51 recessed upward from the lower surface of the burner head 55, at circumferential intervals. Then, by placing the burner head 55 on the bottom wall portion 52, the lower surface of the groove is closed by the bottom wall portion 52, and the flame port 51 is defined between the bottom wall portion 52 and the burner head 55. I have to. As shown in FIG. 3, the flame port 51 is open radially inward with an inclination angle toward one side in the circumferential direction. As a result, the combustion flame of the upper burner section 5 swirls in one direction in the circumferential direction, and the heating efficiency of the cooking container is improved.

下段バーナ部６は、内周側に上方に立ち上がって径方向内方に張り出すフランジ部６２ａが形成された板金製の底壁部６２と、底壁部６２の外周部に対する接合部から上方に立ち上がって径方向内方にのびるフランジ部６３ａが形成された板金製の上壁部６３とで構成されている。そして、底壁部６２のフランジ部６２ａと上壁部６３のフランジ部６３ａとを接合すると共に、底壁部６２のフランジ部６２ａと上壁部６３のフランジ部６３ａとに、下方に凸のビード６２ｂと上方に凸のビード６３ｂとを周方向に位置をずらして複数形成し、これらビード６２ｂ，６３ｂ内の空隙で炎口６１を構成している。尚、図４に示す如く、炎口６１も、上段バーナ部５の炎口５１と同様に周方向一方への傾き角を持って径方向内方に開口しており、下段バーナ部６の燃焼炎も周方向一方に旋回する。 The lower burner portion 6 is a sheet metal bottom wall portion 62 formed with a flange portion 62a that rises upward on the inner peripheral side and projects inward in the radial direction, and upward from a joint portion of the outer peripheral portion of the bottom wall portion 62. The upper wall portion 63 is made of sheet metal and has a flange portion 63a that rises and extends radially inward. Then, the flange portion 62a of the bottom wall portion 62 and the flange portion 63a of the upper wall portion 63 are joined together, and a bead protruding downward is formed on the flange portion 62a of the bottom wall portion 62 and the flange portion 63a of the upper wall portion 63. 62b and a bead 63b convex upward are formed at a plurality of positions displaced in the circumferential direction, and the flame opening 61 is constituted by the voids in the beads 62b, 63b. It should be noted that, as shown in FIG. 4, the flame port 61 also opens inward in the radial direction with an inclination angle to one side in the circumferential direction, similarly to the flame port 51 of the upper burner section 5, and the combustion of the lower burner section 6 occurs. The flame also turns in one direction in the circumferential direction.

上段バーナ５と下段バーナ部６には図外の各別の混合管を介して混合気が供給される。そして、図示省略した火力調節用の操作子の操作で、下段バーナ部６のみを最小火力で燃焼させるとろ火から下段バーナ部６と上段バーナ部５を夫々最大火力で燃焼させる強火までの範囲でコンロ用バーナ４の火力調節を行うようにしている。尚、とろ火での調理容器の加熱量を可及的に減少できるように、下段バーナ部６の最小火力は上段バーナ部５の最小火力より小さく設定されている。更に、下段バーナ部６に近い汁受１１の加熱を抑制して、汁受１１への煮こぼれ汁の焼き付きを防止できるように、下段バーナ部６の最大火力も上段バーナ部５の最大火力より小さく設定されている。 The air-fuel mixture is supplied to the upper burner 5 and the lower burner section 6 through separate mixing pipes (not shown). Then, by operating an operator for adjusting the thermal power (not shown), only the lower burner section 6 is burned with the minimum thermal power, and the lower burner section 6 and the upper burner section 5 are burned with the maximum thermal power. The heating power of the burner 4 is adjusted. The minimum heating power of the lower burner unit 6 is set to be smaller than the minimum heating power of the upper burner unit 5 so that the heating amount of the cooking container on the simmering fire can be reduced as much as possible. Further, the maximum heating power of the lower burner section 6 is lower than the maximum heating power of the upper burner section 5 so that the heating of the soup tray 11 close to the lower burner section 6 is suppressed to prevent the spilled juice from sticking to the soup tray 11. It is set small.

ところで、下段バーナ部６は手が届きにくく清掃しづらい。そのため、下段バーナ部６の炎口６１の煮こぼれ汁による目詰まりを防止する上で、調理容器の底面を伝って滴下する煮こぼれ汁が下段バーナ部６の炎口６１に付着することを防止できるようにすることが望まれる。 By the way, the lower burner section 6 is hard to reach and difficult to clean. Therefore, in order to prevent clogging of the flame mouth 61 of the lower burner section 6 due to spilled juice, it is possible to prevent the spilled juice dripping along the bottom surface of the cooking container from adhering to the flame mouth 61 of the lower burner section 6. It is desirable to be able to do so.

そこで、本実施形態では、上段バーナ部５の底壁部５２の内径Ｄ１を、下段バーナ部６の炎口６１が開口する内周部の径Ｄ２以下にしている。これによれば、下段バーナ部６の炎口６１が開口する内周部は、上方から見て上段バーナ部５の底壁部５２の下に隠れる。そのため、調理容器の底面を伝って滴下する煮こぼれ汁が下段バーナ部６の炎口６１に付着することを防止できる。 Therefore, in the present embodiment, the inner diameter D1 of the bottom wall portion 52 of the upper burner portion 5 is set to be equal to or less than the diameter D2 of the inner peripheral portion where the flame port 61 of the lower burner portion 6 opens. According to this, the inner peripheral portion where the flame port 61 of the lower burner portion 6 opens is hidden under the bottom wall portion 52 of the upper burner portion 5 when viewed from above. Therefore, it is possible to prevent the spilled juice that drops along the bottom surface of the cooking container from adhering to the flame opening 61 of the lower burner section 6.

また、本実施形態では、上段バーナ部５の底壁部５２の内周縁に下方にのびる環状の庇部５２ａを設けている。これによれば、上段バーナ部５の底壁部５２に落下した煮こぼれ汁が底壁部５２の下面に回り込むことを庇部５２ａで防止できる。従って、煮こぼれ汁が上段バーナ部５の底壁部５２の下面に回り込んで下段バーナ部６の炎口６１に落下付着することを防止できる。尚、庇部５２ａは、下方に向かって径方向内方に若干傾斜しており、庇部５２ａの下端の径が上段バーナ部５の底壁部５２の内径Ｄ１となる。 Further, in the present embodiment, an annular eave portion 52a extending downward is provided on the inner peripheral edge of the bottom wall portion 52 of the upper burner portion 5. According to this, the eaves portion 52a can prevent the spilled juice that has fallen on the bottom wall portion 52 of the upper burner portion 5 from wrapping around around the lower surface of the bottom wall portion 52. Therefore, it is possible to prevent the spilled juice from flowing around the lower surface of the bottom wall portion 52 of the upper burner portion 5 and dropping and adhering to the flame opening 61 of the lower burner portion 6. The eaves portion 52a is slightly inclined inward in the radial direction downward, and the diameter of the lower end of the eaves portion 52a is the inner diameter D1 of the bottom wall portion 52 of the upper burner portion 5.

また、本実施形態では、下段バーナ部６の炎口６１を径方向内方に向けて下方に傾斜させている。これによれば、下段バーナ部６の炎口６１に仮に煮こぼれ汁が落下しても、炎口６１の内部に煮こぼれ汁は浸入せず、炎口６１が目詰まりしにくくなる。また、下段バーナ部６の炎口６１の下方への傾斜により、下段バーナ部６の燃焼炎が上段バーナ部５から離れた位置に形成されるようになり、下段バーナ部６の燃焼炎と上段バーナ部５の燃焼炎との干渉による燃焼性の悪化を防止できる。更に、上記庇部５２ａを設ければ、上段バーナ部５と下段バーナ部６との間の空隙を経由して下段バーナ部６に供給される燃焼用二次空気に下向きの方向成分が与えられるため、下段バーナ部６の燃焼炎がより下向きとなって、下段バーナ部６の燃焼炎と上段バーナ部５の燃焼炎との干渉防止の確実性が向上する。 Further, in the present embodiment, the flame port 61 of the lower burner portion 6 is inclined downward inward in the radial direction. According to this, even if the spilled juice falls into the flame opening 61 of the lower burner section 6, the spilled juice does not enter the inside of the flame opening 61, and the flame opening 61 is less likely to be clogged. Further, due to the downward inclination of the flame opening 61 of the lower burner section 6, the combustion flame of the lower burner section 6 is formed at a position apart from the upper burner section 5, and the combustion flame of the lower burner section 6 and the upper stage It is possible to prevent deterioration of combustibility due to interference with the combustion flame of the burner section 5. Further, if the eaves portion 52a is provided, a downward directional component is given to the secondary combustion air supplied to the lower burner portion 6 through the gap between the upper burner portion 5 and the lower burner portion 6. Therefore, the combustion flame of the lower burner portion 6 becomes more downward, and the certainty of preventing interference between the combustion flame of the lower burner portion 6 and the combustion flame of the upper burner portion 5 is improved.

尚、上記の如く下段バーナ部６の炎口６１への煮こぼれ汁の付着は防止できるが、上段バーナ部５の炎口５１への煮こぼれ汁の付着は防止できない。然し、本実施形態においては、バーナヘッド５５が上段バーナ部５の底壁部５２に着脱自在に載置されているため、バーナヘッド５５を取外すことで、炎口５１に付着した煮こぼれ汁を容易に除去でき、清掃性が悪化することはない。 As described above, the spilled juice can be prevented from adhering to the flame opening 61 of the lower burner portion 6, but the spilled juice cannot be prevented from adhering to the flame opening 51 of the upper burner portion 5. However, in the present embodiment, since the burner head 55 is detachably placed on the bottom wall portion 52 of the upper burner portion 5, by removing the burner head 55, the spilled juice adhering to the flame mouth 51 can be removed. It can be removed easily and cleanability does not deteriorate.

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ない。例えば、上記実施形態では、上段バーナ部５の底壁部５２を板金製としているが、これを鋳物製とすることも可能である。この場合、底壁部５２の上面内周部に環状壁を立設し、この環状壁の上面に着座するようにバーナヘッド５５を設けると共に、環状壁に、その上面から下方に凹入する炎口５１となる溝を周方向の間隔を存して複数形成し、これら溝の上面をバーナヘッド５５により閉塞することで、底壁部５２とバーナヘッド５５との間に炎口を画成してもよい。また、上記実施形態では、上段バーナ部５の上壁部５４をバーナヘッド５５と別体としているが、上壁部５４をバーナヘッド５５と一体化することも可能である。 Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited thereto. For example, in the above embodiment, the bottom wall portion 52 of the upper burner portion 5 is made of sheet metal, but it may be made of casting. In this case, an annular wall is erected on the inner peripheral portion of the upper surface of the bottom wall portion 52, the burner head 55 is provided so as to be seated on the upper surface of the annular wall, and the flame that is recessed downward from the upper surface of the annular wall is provided. By forming a plurality of grooves to be the openings 51 at intervals in the circumferential direction and closing the upper surfaces of these grooves with the burner head 55, a flame opening is defined between the bottom wall portion 52 and the burner head 55. You may. Further, in the above embodiment, the upper wall portion 54 of the upper burner portion 5 is provided separately from the burner head 55, but the upper wall portion 54 can be integrated with the burner head 55.

４…コンロ用バーナ、５…上段バーナ部、５１…炎口、５２…底壁部、５２ａ…庇部、５５…バーナヘッド、６…下段バーナ部、６１…炎口。 4... Burner for stove, 5... Upper burner part, 51... Flame port, 52... Bottom wall part, 52a... Eaves part, 55... Burner head, 6... Lower burner part, 61... Flame port.

Claims (5)

環状の上段バーナ部と、上段バーナ部の下方に配置される、上段バーナ部と同心の環状の下段バーナ部とを備えるコンロ用バーナであって、
上段バーナ部と下段バーナ部は、夫々、内周部に径方向内方に向けて開口する炎口を周方向の間隔を存して複数有する内炎式バーナで構成されるものにおいて、
上段バーナ部の底壁部の内径は、下段バーナ部の炎口が開口する内周部の径以下であることを特徴とするコンロ用バーナ。 A stove burner comprising an annular upper burner portion and an annular lower burner portion concentric with the upper burner portion, which is arranged below the upper burner portion,
The upper burner portion and the lower burner portion each include an internal flame burner that has a plurality of flame ports that open radially inward in the inner peripheral portion with a circumferential interval.
The burner for a stove characterized in that the inner diameter of the bottom wall portion of the upper burner portion is equal to or smaller than the diameter of the inner peripheral portion where the flame opening of the lower burner portion opens. 前記上段バーナ部の前記底壁部の内周縁に下方にのびる庇部が設けられることを特徴とする請求項１記載のコンロ用バーナ。 The burner for a stove according to claim 1, wherein an eave portion extending downward is provided at an inner peripheral edge of the bottom wall portion of the upper burner portion. 前記下段バーナ部の前記炎口は、径方向内方に向けて下方に傾斜していることを特徴とする請求項１又は２記載のコンロ用バーナ。 The burner for a stove according to claim 1 or 2, wherein the flame port of the lower burner portion is inclined downward inward in the radial direction. 前記上段バーナ部は、前記底壁部に着脱自在に載置されるバーナヘッドを有し、底壁部とバーナヘッドとの間に上段バーナ部の前記炎口が画成されることを特徴とする請求項１〜３の何れか１項記載のコンロ用バーナ。 The upper burner section has a burner head that is detachably mounted on the bottom wall section, and the flame opening of the upper burner section is defined between the bottom wall section and the burner head. The burner for a stove according to any one of claims 1 to 3. 請求項１〜４の何れか１項記載のコンロ用バーナを備えることを特徴とするガスコンロ。 A gas stove comprising the burner for a stove according to any one of claims 1 to 4.
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