JP2008002783A - Gas stove - Google Patents

Gas stove Download PDF

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JP2008002783A
JP2008002783A JP2006174995A JP2006174995A JP2008002783A JP 2008002783 A JP2008002783 A JP 2008002783A JP 2006174995 A JP2006174995 A JP 2006174995A JP 2006174995 A JP2006174995 A JP 2006174995A JP 2008002783 A JP2008002783 A JP 2008002783A
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burner
top plate
burner ring
ring
guide portion
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JP2006174995A
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JP4550019B2 (en
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Hiroyasu Sato
裕康 佐藤
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Rinnai Corp
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Rinnai Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To suppress adherence of boiled over soup due to heat to a burner ring in a gas stove provided with the annular burner ring to be attached to a top plate 1 to block a gap between a rim of a burner opening 11 opened in the top plate 1 and an outer circumferential face of a burner 2, and having a guide part 43 to be used as a guide when inserting the burner through the burner ring, suspended in a lower face of the burner ring. <P>SOLUTION: Protrusions 43a increasing a surface area are formed an outer side face of the guide part 43 of the lower face of the burner ring 4. Heat radiation from the guide part 43 is promoted, temperature rise of the burner ring 4 is suppressed, and boiled over soup hardly adheres to the burner ring 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、天板と、天板に開設されたバーナ用開口を通して天板の上方に突出する、上端部外周に多数の炎孔が設けられたバーナとを備えるガスコンロに関する。   The present invention relates to a gas stove that includes a top plate and a burner that protrudes above the top plate through a burner opening provided in the top plate and has a number of flame holes on the outer periphery of the upper end.

従来、この種のガスコンロにおいて、煮こぼれ汁がコンロ本体内に落下することを防止するため、バーナ用開口の周縁とバーナの外周面との間の隙間を閉塞する環状のバーナリングを設けたものが知られている(特許文献１参照)。このバーナリングは天板に装着されており、コンロ本体上に天板をセットする際にバーナがバーナリングに挿通されるようにしている。また、バーナリングの下面には、バーナをバーナリングに挿通する際のガイドとなる筒状のガイド部が垂設されている。   Conventionally, in this type of gas stove, an annular burner ring that closes the gap between the peripheral edge of the burner opening and the outer peripheral surface of the burner is provided in order to prevent the simmered juice from falling into the stove body. Is known (see Patent Document 1). This burner ring is attached to the top plate so that the burner is inserted into the burner ring when the top plate is set on the stove body. In addition, a cylindrical guide portion serving as a guide when the burner is inserted into the burner ring is provided on the lower surface of the burner ring.

ところで、バーナリングはバーナ炎からの輻射熱で高温になる。そのため、バーナリング上に落下した煮こぼれ汁がバーナリングにこびり付きやすくなり、手入れが面倒になる不具合がある。
特開２００２−１３７３９号公報 By the way, burner ring becomes high temperature by the radiant heat from a burner flame. Therefore, there is a problem that the boiled spilled juice that has fallen on the burner ring is easily stuck to the burner ring, and the care is troublesome.
JP 2002-13739 A

本発明は、以上の点に鑑み、バーナリング下面のガイド部を利用してバーナリングの放熱を促進し、煮こぼれ汁のこびり付きを抑制できるようにしたガスコンロを提供することをその課題としている。   In view of the above points, an object of the present invention is to provide a gas stove that uses a guide portion on the lower surface of the burner ring to promote heat dissipation of the burner ring and suppress sticking of boiled juice.

上記課題を解決するために、本発明は、天板と、天板に開設されたバーナ用開口を通して天板の上方に突出する、上端部外周に多数の炎孔が設けられたバーナと、バーナ用開口の周縁とバーナの外周面との間の隙間を閉塞する、天板に装着される環状のバーナリングとを備えるガスコンロであって、バーナリングの下面に、バーナをバーナリングに挿通する際のガイドとなるガイド部が垂設されているものにおいて、ガイド部に表面積を増加するための突条が形成されていることを特徴とする。   In order to solve the above-described problems, the present invention provides a top plate, a burner that protrudes above the top plate through a burner opening provided in the top plate, and has a plurality of flame holes on the outer periphery of the upper end, and a burner A gas stove comprising an annular burner ring attached to the top plate that closes a gap between the peripheral edge of the opening for use and the outer peripheral surface of the burner, and when the burner is inserted into the burner ring on the lower surface of the burner ring In the case where the guide portion serving as the guide is suspended, a protrusion for increasing the surface area is formed on the guide portion.

本発明によれば、バーナリングの下面のガイド部に突条を形成することでバーナリングの表面積が増し、ガイド部からの放熱が促進される。そのため、バーナリングの温度上昇が抑制されて、バーナリングに煮こぼれ汁がこびり付きにくくなる。   According to this invention, the surface area of a burner ring increases by forming a protrusion on the guide part of the lower surface of a burner ring, and the thermal radiation from a guide part is accelerated | stimulated. Therefore, the temperature increase of the burner ring is suppressed, and the spilled juice is less likely to stick to the burner ring.

尚、ガイド部のバーナ側の面(内側面)に突条を形成することも可能であるが、ガイド部の内側面とバーナとの間には熱がこもるため、放熱しにくくなる。これに対し、ガイド部のバーナ側とは逆の外側面に突条を形成すれば、ガイド部の外側面から効率良く放熱されるようになり、有利である。   Although it is possible to form a protrusion on the burner side surface (inner side surface) of the guide part, heat is trapped between the inner side surface of the guide part and the burner, so that it is difficult to dissipate heat. On the other hand, if the protrusion is formed on the outer surface opposite to the burner side of the guide portion, heat is efficiently radiated from the outer surface of the guide portion, which is advantageous.

ところで、バーナリングを天板に装着する手法として、天板の下面に設けられる裏板に、バーナ用開口内に舌片状に張り出す周方向複数箇所の固定部を形成すると共に、バーナリングの下面にこれら固定部に対応する複数の取付け座を形成し、バーナリングを取付け座において固定部にねじ止めすることが考えられる。この場合、ねじ止め前に、各取付け座と各固定部とが重なるようにバーナリングと裏板とを位置決めすることが必要になる。ここで、各取付け座の周方向に隣接して上記ガイド部が設けられていれば、ガイド部の取付け座側の側縁を固定部の側縁に当接させることでバーナリングと裏板とを容易に位置決めでき、バーナリングの装着作業性が向上する。   By the way, as a method of attaching the burner ring to the top plate, on the back plate provided on the lower surface of the top plate, a plurality of fixing portions in the circumferential direction projecting in the shape of tongues in the burner opening are formed, and the burner ring A plurality of mounting seats corresponding to these fixed portions may be formed on the lower surface, and the burner ring may be screwed to the fixed portion at the mounting seat. In this case, before screwing, it is necessary to position the burner ring and the back plate so that each mounting seat and each fixing portion overlap each other. Here, if the guide portion is provided adjacent to each mounting seat in the circumferential direction, the side edge of the guide seat on the mounting seat side is brought into contact with the side edge of the fixed portion, and the burner ring and the back plate Can be positioned easily and burner ring mounting workability is improved.

図１、図２を参照して、１はガスコンロの天板を示している。天板１は、セラミックガラス等のガラス製の平板又はアルミニウム等の金属製の平板で構成されている。天板１にはバーナ用開口１１が開設されており、このバーナ用開口１１を通してバーナ２が天板１の上方に突出している。また、天板１上には、環状の五徳枠３１に複数の五徳爪３２を取付けて成る五徳３がバーナ用開口１１を囲うようにして載置されている。   1 and 2, reference numeral 1 denotes a top plate of a gas stove. The top plate 1 is composed of a flat plate made of glass such as ceramic glass or a flat plate made of metal such as aluminum. The top plate 1 is provided with a burner opening 11, and the burner 2 protrudes above the top plate 1 through the burner opening 11. Further, on the top plate 1, a virtues 3 formed by attaching a plurality of virtues claws 32 to an annular virtuosity frame 31 is placed so as to surround the burner opening 11.

バーナ２は、天板１で覆われるコンロ本体内に配置される混合管２１と、混合管２１の下流端部から上方にのび、バーナ用開口１１を通して天板１の上方に突出する内外２重筒構造のバーナボディ２２と、バーナボディ２２上に載置される環状のバーナヘッド２３とで構成されている。バーナヘッド２３の下面外周部には多数の歯形が垂設されており、バーナ２の上端部外周にこれら歯形間の隙間で構成される多数の炎孔２４が設けられている。   The burner 2 includes a mixing tube 21 disposed in a stove body covered with the top plate 1, and an inner / outer duplex that extends upward from the downstream end of the mixing tube 21 and protrudes above the top plate 1 through the burner opening 11. The burner body 22 has a cylindrical structure, and an annular burner head 23 placed on the burner body 22. A large number of tooth forms are suspended from the outer peripheral portion of the lower surface of the burner head 23, and a large number of flame holes 24 formed by gaps between these tooth shapes are provided on the outer periphery of the upper end portion of the burner 2.

尚、バーナボディ２２の外周には、その外筒部の上端から垂下する筒状のスカート部２２ａが設けられている。また、バーナ２には、スカート部２２ａの外側に位置させて、点火電極２５と失火検知用の熱電対２６とが付設され、更に、バーナヘッド２３を上方から覆うバーナカバー２７が設けられている。バーナカバー２７は、煮こぼれ汁がバーナ２の内径部を通してコンロ本体内に落下することを防止すると共に、コンロ本体内からバーナ２の内径部を通して上昇する空気を炎孔２４の近傍に二次空気として導く機能を有する。   A cylindrical skirt portion 22 a that hangs down from the upper end of the outer cylinder portion is provided on the outer periphery of the burner body 22. In addition, the burner 2 is provided with an ignition electrode 25 and a thermocouple 26 for detecting misfire, and is provided with a burner cover 27 that covers the burner head 23 from above. . The burner cover 27 prevents the boiled spilled juice from dropping into the stove body through the inner diameter portion of the burner 2, and causes the air rising from the inside of the stove body through the inner diameter portion of the burner 2 to enter the secondary air in the vicinity of the flame hole 24. It has the function to lead as.

また、天板１には、バーナ用開口１１の周縁とバーナ２(スカート部２２ａ)の外周面との間の隙間から煮こぼれ汁がコンロ本体内に落下することを防止するため、この隙間を閉塞する環状のバーナリング４が以下の如く装着されている。尚、バーナリング４はアルミニウムのダイキャスト品で構成されている。   Further, the top plate 1 is provided with a gap in order to prevent the spilled juice from falling into the stove body from the gap between the peripheral edge of the burner opening 11 and the outer peripheral surface of the burner 2 (skirt portion 22a). A closed annular burner ring 4 is mounted as follows. The burner ring 4 is made of an aluminum die-cast product.

天板１の下面には、バーナ用開口１１を囲うようにして板金製の裏板１２が設置されている。図３を参照して、裏板１２には、バーナ用開口１１内に舌片状に張り出す周方向３箇所の固定部１３が形成され、また、バーナリング４の下面には、これら固定部１３に対応する周方向３箇所の取付け座４１が形成されている。そして、バーナリング４の外周部下面を天板１のバーナ用開口１１の周辺部上面に着座させると共に、各固定部１３に形成した孔１３ａに下方からねじ４２を挿通して、ねじ４２を各取付け座４１に形成したねじ孔４１ａに螺合させることにより、バーナリング４を天板１に装着している。尚、裏板１２は天板１に固定されておらず、そのため、バーナリング４は天板１に対し水平に動き得る。   A sheet metal back plate 12 is installed on the lower surface of the top plate 1 so as to surround the burner opening 11. Referring to FIG. 3, three fixing portions 13 are formed on the back plate 12 in the circumferential direction so as to project into a tongue piece in the burner opening 11, and these fixing portions are formed on the lower surface of the burner ring 4. Three mounting seats 41 corresponding to 13 are formed in the circumferential direction. Then, the lower surface of the outer peripheral portion of the burner ring 4 is seated on the upper surface of the peripheral portion of the burner opening 11 of the top plate 1, and screws 42 are inserted from below into the holes 13 a formed in the fixing portions 13. The burner ring 4 is attached to the top plate 1 by being screwed into a screw hole 41 a formed in the mounting seat 41. The back plate 12 is not fixed to the top plate 1, so that the burner ring 4 can move horizontally with respect to the top plate 1.

バーナリング４の下面には、更に、バーナ２用のガイド部４３が垂設されている。ガイド部４３の内側面は下方に向けて径方向外方に傾斜するテーパー面に形成されている。かくして、天板１をコンロ本体上にセットする際に、バーナ２がガイド部４３の内側面に案内されてスムーズにバーナリング４に挿通される。そして、バーナリング４がバーナ２に倣って天板１に対し水平に動き、バーナ２がバーナ用開口１１に対し多少芯ずれしていても、バーナ２はバーナリング４に確実に嵌合する。   Further, a guide portion 43 for the burner 2 is provided on the lower surface of the burner ring 4. The inner surface of the guide portion 43 is formed as a tapered surface that inclines radially outwardly downward. Thus, when the top plate 1 is set on the stove body, the burner 2 is guided by the inner surface of the guide portion 43 and smoothly inserted into the burner ring 4. The burner ring 4 moves horizontally with respect to the top plate 1 following the burner 2, and the burner 2 is securely fitted to the burner ring 4 even if the burner 2 is slightly misaligned with respect to the burner opening 11.

バーナ２に付設した点火電極２５と熱電対２６はバーナリング４に形成した対応する孔４４，４５を通してバーナリング４の上方に突出する。そして、点火電極２５と熱電対２６とによりバーナリング４が回り止めされる。また、バーナリング４の外周部には２箇所の凹欠部４６が形成されている。そして、五徳３の複数の五徳爪３２のうち２個の五徳爪３２の下辺部を五徳枠３１の内方に延長し、この延長部３２ａを凹欠部４６に係合させることで、五徳３を回り止めしている。   The ignition electrode 25 and the thermocouple 26 attached to the burner 2 protrude above the burner ring 4 through corresponding holes 44 and 45 formed in the burner ring 4. Then, the burner ring 4 is prevented from rotating by the ignition electrode 25 and the thermocouple 26. Further, two recessed portions 46 are formed on the outer peripheral portion of the burner ring 4. Then, by extending the lower sides of the two five virtue claws 32 among the plural virtue claws 32 of the five virtues 3 to the inside of the five virtue frame 31 and engaging the extension part 32a with the recess 46, the five virtue 3 Is preventing rotation.

上記ガイド部４３は基本的に筒状であるが、点火電極２５の配置部と熱電対２６の配置部では干渉防止のためにガイド部４３が切り欠かれ、更に、各取付け座４１の形成部分でもガイド部４３が切り欠かれている。かくして、各取付け座４１の周方向に隣接してガイド部４３が設けられることになる。ここで、バーナリング４を天板１に装着する際は、裏板１２の各固定部１３にバーナリング４の各取付け座４１をねじ止めする前に、各固定部１３と各取付け座４１とが重なるように裏板１２とバーナリング４とを位置決めすることが必要になる。この位置決めは、取付け座４１に隣接するガイド部４３の側縁を固定部１３の側縁に当接させることで容易に行うことができ、バーナリング４の装着作業性が向上する。   The guide portion 43 is basically cylindrical, but the guide portion 43 is notched in the placement portion of the ignition electrode 25 and the placement portion of the thermocouple 26 to prevent interference, and further, the formation portion of each mounting seat 41 is formed. However, the guide part 43 is notched. Thus, the guide portion 43 is provided adjacent to the circumferential direction of each mounting seat 41. Here, when attaching the burner ring 4 to the top plate 1, before screwing each mounting seat 41 of the burner ring 4 to each fixing portion 13 of the back plate 12, each fixing portion 13, each mounting seat 41, and It is necessary to position the back plate 12 and the burner ring 4 so that they overlap. This positioning can be easily performed by bringing the side edge of the guide portion 43 adjacent to the mounting seat 41 into contact with the side edge of the fixed portion 13, and the workability of mounting the burner ring 4 is improved.

ところで、バーナリング４はバーナ２の炎孔２４から噴出する混合気の燃焼で生ずる火炎からの輻射熱で加熱される。そして、バーナリング４が高温になると、バーナリング４上に落下した煮こぼれ汁がバーナリング４にこびり付きやすくなる。   By the way, the burner ring 4 is heated by the radiant heat from the flame generated by the combustion of the air-fuel mixture ejected from the flame hole 24 of the burner 2. And when the burner ring 4 becomes high temperature, the boiled juice falling on the burner ring 4 is likely to stick to the burner ring 4.

そこで、本実施形態では、ガイド部４３のバーナ２側とは逆の外側面に上下方向に長手の突条４３ａを周方向の間隔を存して複数形成している。これにより、ガイド部４３の表面積が増し、バーナリング４の熱がガイド部４３を介して効率良く放熱されるようになる。その結果、バーナリング４の温度上昇が抑制されて、バーナリング４に煮こぼれ汁がこびり付きにくくなる。   Therefore, in the present embodiment, a plurality of protrusions 43a elongated in the vertical direction are formed on the outer surface opposite to the burner 2 side of the guide portion 43 with a circumferential interval. Thereby, the surface area of the guide part 43 increases, and the heat of the burner ring 4 is efficiently radiated through the guide part 43. As a result, the temperature rise of the burner ring 4 is suppressed, and the spilled juice is less likely to stick to the burner ring 4.

尚、バーナリング４の上面には、煮こぼれ汁がバーナリング４上に滞留しないように、径方向外方に向かう下り勾配が付けられ、更に、フッ素コーティングが施されている。然し、これだけでは煮こぼれ汁が熱でバーナリング４にこびり付くことを防止できない。従って、ガイド部４３に突条４３ａを形成して、ガイド部４３からの放熱を促進することは、煮こぼれ汁のこびり付きを防止する上で非常に重要である。   The upper surface of the burner ring 4 is provided with a downward gradient in the radial direction so that the simmered juice does not stay on the burner ring 4 and is further coated with fluorine. However, this alone cannot prevent the boiled spilled juice from sticking to the burner ring 4 with heat. Therefore, it is very important to form the protrusion 43a in the guide part 43 and to promote the heat radiation from the guide part 43 in order to prevent sticking of the boiled juice.

また、本実施形態では、ガイド部４３からの放熱効率を向上させるため、ガイド部４３の表面に高輻射材料をコーティングしている。これにより、バーナリング４の上面の温度上昇が更に２０〜３０℃程度低減される。高輻射材料としては、フッ素樹脂、シリコーン樹脂、ポリアミドイミド樹脂、ポリイミド樹脂等の黒色系の耐熱性樹脂塗料が好ましい。   In the present embodiment, the surface of the guide portion 43 is coated with a high radiation material in order to improve the heat dissipation efficiency from the guide portion 43. Thereby, the temperature rise of the upper surface of the burner ring 4 is further reduced by about 20 to 30 ° C. As the high radiation material, a black heat-resistant resin paint such as a fluororesin, a silicone resin, a polyamide-imide resin, and a polyimide resin is preferable.

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、本発明はこれに限られない。例えば、上記実施形態では、ガイド部４３の外側面に突条４３ａを形成したが、ガイド部４３の内側面に突条を形成することも可能である。但し、ガイド部４３の内側面とバーナ２との間には熱がこもりやすく、放熱性を向上させるには上記実施形態のようにすることが望ましい。また、上記実施形態では、突条４３ａを上下方向に長手としたが、周方向に長手の突条を形成しても良い。   As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the above embodiment, the protrusion 43 a is formed on the outer surface of the guide portion 43, but it is also possible to form a protrusion on the inner surface of the guide portion 43. However, heat is likely to be trapped between the inner surface of the guide portion 43 and the burner 2, and it is desirable that the above-described embodiment be used to improve heat dissipation. Moreover, in the said embodiment, although the protrusion 43a was made long in the up-down direction, you may form a long protrusion in the circumferential direction.

本発明の実施形態のガスコンロの要部の斜視図。The perspective view of the principal part of the gas stove 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. 実施形態のガスコンロに設けられたバーナリングと裏板の斜め下方から見た斜視図。The perspective view seen from the diagonal lower side of the burner ring provided in the gas stove of embodiment, and a backplate.

符号の説明Explanation of symbols

１…天板、１１…バーナ用開口、１２…裏板、１３…固定部、２…バーナ、２４…炎孔、４…バーナリング、４１…取付け座、４３…ガイド部、４３ａ…突条。   DESCRIPTION OF SYMBOLS 1 ... Top plate, 11 ... Opening for burners, 12 ... Back plate, 13 ... Fixing part, 2 ... Burner, 24 ... Flame hole, 4 ... Burner ring, 41 ... Mounting seat, 43 ... Guide part, 43a ... Projection.

Claims (3)

天板と、天板に開設されたバーナ用開口を通して天板の上方に突出する、上端部外周に多数の炎孔が設けられたバーナと、バーナ用開口の周縁とバーナの外周面との間の隙間を閉塞する、天板に装着される環状のバーナリングとを備えるガスコンロであって、バーナリングの下面に、バーナをバーナリングに挿通する際のガイドとなるガイド部が垂設されているものにおいて、
ガイド部に表面積を増加するための突条が形成されていることを特徴とするガスコンロ。 A top plate, a burner projecting above the top plate through the burner opening provided in the top plate, and having a plurality of flame holes on the outer periphery of the upper end, and between the periphery of the burner opening and the outer peripheral surface of the burner A gas stove comprising an annular burner ring attached to the top plate that closes the gap of the top plate, and a guide portion serving as a guide when the burner is inserted into the burner ring is suspended from the lower surface of the burner ring In things,
A gas stove characterized in that protrusions for increasing the surface area are formed on the guide portion. 前記突条は前記ガイド部のバーナ側とは逆の外側面に形成されていることを特徴とする請求項１記載のガスコンロ。   The gas stove according to claim 1, wherein the protrusion is formed on an outer surface opposite to the burner side of the guide portion. 前記天板の下面に設けられる裏板に、バーナ用開口内に舌片状に張り出す周方向複数箇所の固定部が形成され、これら固定部にねじ止めされる複数の取付け座が前記バーナリングの下面に形成され、これら各取付け座の周方向に隣接して前記ガイド部が設けられていることを特徴とする請求項１又は２記載のガスコンロ。   The back plate provided on the lower surface of the top plate is formed with a plurality of circumferentially fixed portions projecting in a tongue shape in the burner opening, and a plurality of mounting seats screwed to the fixed portions are the burner ring. The gas stove according to claim 1, wherein the guide portion is provided adjacent to a circumferential direction of each of the mounting seats.
JP2006174995A 2006-06-26 2006-06-26 Gas stove Active JP4550019B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013050224A (en) * 2011-08-30 2013-03-14 Harman Co Ltd Gas cooking stove
JP2014224631A (en) * 2013-05-15 2014-12-04 株式会社ハーマン Burner for cooking stove

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5217968A (en) * 1975-07-31 1977-02-10 Hitachi Heating Appliance Co Ltd Gas heater
JPS62148825U (en) * 1986-03-10 1987-09-19
JPH08255680A (en) * 1995-03-17 1996-10-01 Idemitsu Kosan Co Ltd Flat heating element
JPH10185119A (en) * 1996-12-20 1998-07-14 Harman Co Ltd Gas cooking stove
JP2002013739A (en) * 2000-06-28 2002-01-18 Harman Co Ltd Sealing structure between top plate and burner in gas cooker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5217968A (en) * 1975-07-31 1977-02-10 Hitachi Heating Appliance Co Ltd Gas heater
JPS62148825U (en) * 1986-03-10 1987-09-19
JPH08255680A (en) * 1995-03-17 1996-10-01 Idemitsu Kosan Co Ltd Flat heating element
JPH10185119A (en) * 1996-12-20 1998-07-14 Harman Co Ltd Gas cooking stove
JP2002013739A (en) * 2000-06-28 2002-01-18 Harman Co Ltd Sealing structure between top plate and burner in gas cooker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013050224A (en) * 2011-08-30 2013-03-14 Harman Co Ltd Gas cooking stove
JP2014224631A (en) * 2013-05-15 2014-12-04 株式会社ハーマン Burner for cooking stove

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