JP7499085B2 - Gas stove - Google Patents

Gas stove Download PDF

Info

Publication number
JP7499085B2
JP7499085B2 JP2020106764A JP2020106764A JP7499085B2 JP 7499085 B2 JP7499085 B2 JP 7499085B2 JP 2020106764 A JP2020106764 A JP 2020106764A JP 2020106764 A JP2020106764 A JP 2020106764A JP 7499085 B2 JP7499085 B2 JP 7499085B2
Authority
JP
Japan
Prior art keywords
flame
control valve
ignition
valve
operating member
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
JP2020106764A
Other languages
Japanese (ja)
Other versions
JP2022001812A (en
Inventor
雅斗 丹下
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 JP2020106764A priority Critical patent/JP7499085B2/en
Priority to TW109144385A priority patent/TW202200938A/en
Priority to CN202110607509.2A priority patent/CN113898979A/en
Publication of JP2022001812A publication Critical patent/JP2022001812A/en
Application granted granted Critical
Publication of JP7499085B2 publication Critical patent/JP7499085B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/126—Arrangement or mounting of control or safety devices on ranges

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Control Of Combustion (AREA)

Description

本発明は、天板上の五徳に載置した調理容器を加熱するコンロバーナと、コンロバーナの点火操作及び消火操作を行う手動の操作部材と、コンロバーナに対するガス供給路に介設した手動操作される手動式火力調節弁と、ガス供給路に手動式火力調節弁と直列に介設したモータで駆動される電動式火力調節弁とを備えるガスコンロに関する。 The present invention relates to a gas stove equipped with a stove burner that heats a cooking vessel placed on a trivet on the top plate, a manual operating member for igniting and extinguishing the stove burner, a manually operated manual flame control valve that is disposed in the gas supply path to the stove burner, and an electric flame control valve that is driven by a motor that is disposed in series with the manual flame control valve in the gas supply path.

従来、この種のガスコンロとして、操作部材による点火操作時に、手動式火力調節弁を所定の火力位置にする連動機構を設けたものが知られている（例えば、特許文献１参照）。ここで、特許文献１に記載のものでは、上記所定の火力位置を最大火力位置に設定している。然し、このものでは、点火時に、調理容器の底面から外方に火炎が溢れ出る炎溢れを生じて、使用者を驚かせてしまうことがある。 Conventionally, this type of gas stove is known to have an interlocking mechanism that sets the manual flame control valve to a specified flame position when the ignition operation is performed using an operating member (see, for example, Patent Document 1). Here, in the stove described in Patent Document 1, the specified flame position is set to the maximum flame position. However, with this stove, when ignited, flames can overflow outward from the bottom of the cooking container, startling the user.

そこで、上記所定の火力位置を、最小火力位置と最大火力位置との間の点火火力位置に設定し、コンロバーナの火力を中火程度にして、点火時の炎溢れを抑制するようにしたものも従来知られている（例えば、特許文献２参照）。然し、使用者によっては、強い火力で調理を開始したくて、操作部材による点火操作とほぼ同時に手動式火力調節弁を点火火力位置から最大火力位置に切換え操作してしまうことがある。この場合は、点火時の炎溢れを抑制することができなくなる。 Therefore, a known prior art device is to set the above-mentioned predetermined heat position to an ignition heat position between the minimum heat position and the maximum heat position, and set the heat of the stove burner to about medium heat to suppress flame overflow at the time of ignition (see, for example, Patent Document 2). However, some users may want to start cooking with a strong heat and switch the manual heat control valve from the ignition heat position to the maximum heat position almost at the same time as operating the operating member to ignite the stove. In this case, it becomes impossible to suppress flame overflow at the time of ignition.

特開平１１－１０８３４４号公報Japanese Patent Application Laid-Open No. 11-108344 特開平８－３１２９５５号公報Japanese Patent Application Laid-Open No. 8-312955

本発明は、以上の点に鑑み、点火時の炎溢れをより確実に抑制することが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, the present invention aims to provide a gas stove that can more reliably prevent flame overflow when ignited.

上記課題を解決するために、本発明は、天板上の五徳に載置した調理容器を加熱するコンロバーナと、コンロバーナの点火操作及び消火操作を行う手動の操作部材と、コンロバーナに対するガス供給路に介設した手動操作される手動式火力調節弁と、ガス供給路に手動式火力調節弁と直列に介設したモータで駆動される電動式火力調節弁とを備えるガスコンロであって、操作部材による点火操作時に、手動式火力調節弁を最小火力位置と最大火力位置との間の所定の点火火力位置にする連動機構が設けられるものにおいて、操作部材による点火操作時に、電動式火力調節弁を、最小火力位置と最大火力位置との間の所定の中間火力位置にするようにし、この中間火力位置は、手動式火力調節弁を点火火力位置から最大火力位置側に操作しても、コンロバーナの火力が点火火力位置で得られる火力より大きくなることを抑制できる位置に設定されることを特徴とする。 In order to solve the above problems, the present invention provides a gas stove equipped with a stove burner that heats a cooking vessel placed on a trivet on a top plate, a manual operating member that ignites and extinguishes the stove burner, a manually operated manual flame control valve that is interposed in the gas supply path to the stove burner, and an electric flame control valve that is connected in series with the manual flame control valve in the gas supply path and is driven by a motor, and is provided with a linkage mechanism that sets the manual flame control valve to a specified ignition flame position between the minimum flame position and the maximum flame position when the operating member is used for ignition, and is characterized in that when the operating member is used for ignition, the electric flame control valve is set to a specified intermediate flame position between the minimum flame position and the maximum flame position, and this intermediate flame position is set to a position that prevents the flame power of the stove burner from becoming greater than the flame power obtained at the ignition flame position, even if the manual flame control valve is operated from the ignition flame position toward the maximum flame position.

本発明によれば、操作部材による点火操作とほぼ同時に手動式火力調節弁を点火火力位置から最大火力位置に切換え操作しても、点火操作時は電動式火力調節弁が中間火力位置になっているため、コンロバーナの火力が点火火力位置で得られる火力より大きくなることが抑制される。その結果、点火時の炎溢れをより確実に抑制することができる。 According to the present invention, even if the manual flame control valve is switched from the ignition flame position to the maximum flame position almost simultaneously with the ignition operation using the operating member, the electric flame control valve is in the intermediate flame position during the ignition operation, so the flame power of the stove burner is prevented from becoming greater than the flame power obtained in the ignition flame position. As a result, flame overflow during ignition can be more reliably prevented.

また、本発明においては、五徳上に調理容器が無い状態でのコンロバーナの点火を防止するため、五徳上の調理容器の有無を検知する調理容器検知手段を設け、操作部材による点火操作時に、調理容器検知手段で調理容器無しを検知した場合は、電動式火力調節弁を全閉状態にして、コンロバーナへのガス供給を停止することが望まれる。更に、操作部材による消火操作時に、電動式火力調節弁を所定の待機位置に切換えて次の点火操作まで待機させることが考えられる。この場合、待機位置を中間火力位置に設定すれば、点火操作時に電動式火力調節弁を駆動せずに済む。然し、これでは、点火操作時に調理容器無しを検知した場合、電動式火力調節弁を中間火力位置から全閉状態に切換えることが必要になり、この切換に要する時間中に生ガスが放出されてしまう。 In addition, in the present invention, in order to prevent the stove burner from igniting when there is no cooking container on the trivet, a cooking container detection means is provided to detect the presence or absence of a cooking container on the trivet, and if the cooking container detection means detects the absence of a cooking container during the ignition operation using the operating member, it is desirable to fully close the electric flame control valve and stop the gas supply to the stove burner. Furthermore, when the extinguishing operation is performed using the operating member, it is possible to switch the electric flame control valve to a specified standby position and wait until the next ignition operation. In this case, if the standby position is set to the medium flame position, it is not necessary to drive the electric flame control valve during the ignition operation. However, in this case, if the absence of a cooking container is detected during the ignition operation, it is necessary to switch the electric flame control valve from the medium flame position to the fully closed state, and raw gas is released during the time required for this switching.

これに対し、上記待機位置を全閉状態又は全閉状態の近傍の位置に設定しておけば、点火操作時に調理容器無しを検知した場合、電動式火力調節弁を直ちに全閉状態にして、生ガスの放出を防止でき有利である。尚、このものでは、点火操作時に、調理容器検知手段で調理容器有りを検知した場合、電動式火力調節弁を全閉状態又は全閉状態の近傍の待機位置から中間火力位置に切換えればよい。 In contrast, if the standby position is set to the fully closed state or a position close to the fully closed state, if the absence of a cooking container is detected during the ignition operation, the motorized heat control valve can be immediately switched to the fully closed state, which is advantageous in preventing the release of raw gas. Furthermore, in this case, if the presence of a cooking container is detected by the cooking container detection means during the ignition operation, the motorized heat control valve can be switched from the standby position, which is fully closed or a position close to the fully closed state, to the intermediate heat position.

また、本発明において、操作部材による点火操作後、コンロバーナへの点火がコンロバーナに付設する火炎検知素子で検知されたときは、電動式火力調節弁を中間火力位置から最大火力位置に切換えることが望ましい。これによれば、コンロバーナへの点火検知後は、コンロバーナの火力を、電動式火力調節弁で律速されることなく、手動式火力調節弁により最大火力まで増加させることができる。 In addition, in the present invention, when ignition of the stove burner is detected by a flame detection element attached to the stove burner after the ignition operation using the operating member, it is desirable to switch the electric flame control valve from the medium flame position to the maximum flame position. In this way, after ignition of the stove burner is detected, the flame power of the stove burner can be increased to the maximum flame power by the manual flame control valve without being limited by the electric flame control valve.

本発明の実施形態のガスコンロの斜視図。1 is a perspective view of a gas stove according to an embodiment of the present invention; 実施形態のガスコンロのガス配管を示す回路図。FIG. 2 is a circuit diagram showing gas piping of the gas stove according to the embodiment. 実施形態のガスコンロに設けられるコンロバーナ用バルブユニットの切断側面図。3 is a cross-sectional side view of a valve unit for a stove burner provided in the gas stove of the embodiment. FIG. コンロバーナ用バルブユニットに設けられる電磁安全弁と元弁の操作部材による動作を示す要部の切断側面図。1 is a cutaway side view of a key portion showing the operation of an electromagnetic safety valve and a main valve provided in a stove burner valve unit by an operating member. FIG. コンロバーナ用バルブユニットに設けられる操作部材の位置検出のためのマイクロスイッチの作動を示す説明図。An explanatory diagram showing the operation of a microswitch for detecting the position of an operating member provided in a stove burner valve unit. コンロバーナ用バルブユニットに設けられる手動式火力調節弁による火力変化を示すグラフ。1 is a graph showing changes in flame power caused by a manual flame power control valve provided in a stove burner valve unit. 図３のＶＩＩ－ＶＩＩ線で切断した切断平面図。FIG. 7 is a cross-sectional plan view taken along line VII-VII in FIG. コンロバーナ用バルブユニットに設けられる電動式火力調節弁の拡大切断側面図。FIG. 2 is an enlarged cutaway side view of an electric flame control valve provided in a valve unit for a stove burner. コンロバーナ用バルブユニットに設けられる電動式火力調節弁による火力変化を示すグラフ。1 is a graph showing changes in flame power caused by an electric flame power control valve provided in a stove burner valve unit. 実施形態のガスコンロに設けられる調理容器検知手段の動作を模式的に示す説明図。5A to 5C are explanatory diagrams illustrating the operation of a cooking vessel detection means provided in the gas stove of the embodiment. 実施形態のガスコンロにおける電動式火力調節弁の制御内容を示すフロー図。FIG. 4 is a flow chart showing the control of the electric flame power adjustment valve in the gas stove according to the embodiment.

図１に示す本発明の実施形態のガスコンロは、コンロ本体１の上面を覆う天板２に開設した左右一対のバーナ用開口（図示せず）に臨む左右一対のコンロバーナ３，３と、左右夫々のバーナ用開口を囲うようにして天板２上に載置される左右一対の五徳４，４と、コンロ本体１に組み込んだグリル５とを備えている。コンロ本体１の前面パネル１１には、左右のコンロバーナ用の点消火キー１２，１２と、これら点消火キー１２，１２の上方に位置する横方向に揺動自在なコンロバーナ用の火力調節レバー１３，１３と、グリル用の点消火キー１４と、その上方に位置する横方向に揺動自在なグリル５の上火バーナ用と下火バーナ用の上下一対の火力調節レバー１５１、１５２とが設けられている。 The gas stove according to the embodiment of the present invention shown in Fig. 1 comprises a pair of left and right burners 3, 3 facing a pair of left and right burner openings (not shown) opened in a top plate 2 covering the upper surface of the stove body 1, a pair of left and right trivets 4, 4 placed on the top plate 2 so as to surround each of the left and right burner openings, and a grill 5 incorporated in the stove body 1. On the front panel 11 of the stove body 1, there are provided ignition/extinguishing keys 12, 12 for the left and right burners, flame power adjustment levers 13, 13 for the burners located above the ignition/extinguishing keys 12, 12 and capable of swinging laterally, an ignition/extinguishing key 14 for the grill, and a pair of upper and lower flame power adjustment levers 15-1 , 15-2 for the upper and lower burners of the grill 5 located above the ignition/extinguishing keys 12-12 and capable of swinging laterally.

図２を参照して、ガス供給路６は、左右のコンロバーナ３，３にガスを供給するコンロバーナ用の一対のガス供給路６ａ，６ａとグリル５の上火バーナ５１と下火バーナ５２とにガスを供給するグリル用のガス供給路６ｂとに分岐されている。各コンロバーナ用ガス供給路６ａには、電磁安全弁７１と元弁７２と電動式火力調節弁７３と火力調節レバー１３に連動する手動式火力調節弁７４とを備えるコンロバーナ用のバルブユニット７が介設され、グリル用ガス供給路６ｂには、電磁安全弁８１と元弁８２と上火バーナ５１用の火力調節レバー１５１に連動する手動式の上火バーナ用火力調節弁８３１と下火バーナ５２用の火力調節レバー１５２に連動する手動式の下火バーナ用火力調節弁８３２とを備えるグリル用のバルブユニット８が介設されている。 2, the gas supply passage 6 is branched into a pair of gas supply passages 6a, 6a for the burner, which supply gas to the left and right burners 3, 3, and a gas supply passage 6b for the grill, which supplies gas to the upper burner 51 and the lower burner 52 of the grill 5. A valve unit 7 for the burner, which includes an electromagnetic safety valve 71, a main valve 72, an electric flame power control valve 73, and a manual flame power control valve 74 linked to the flame power control lever 13, is interposed in each gas supply passage 6a for the burner, and a valve unit 8 for the grill, which includes an electromagnetic safety valve 81, a main valve 82, a manual upper burner flame power control valve 83-1 linked to the flame power control lever 15-1 for the upper burner 51, and a manual lower burner flame power control valve 83-2 linked to the flame power control lever 15-2 for the lower burner 52, is interposed in the gas supply passage 6b for the grill.

以下、図３を参照して、コンロバーナ用のバルブユニット７について詳述する。尚、グリル用のバルブユニット８の電磁安全弁８１、元弁８２及び手動式火力調節弁８３１，８３２は、コンロバーナ用のバルブユニット７の後述する電磁安全弁７１、元弁７２及び手動式火力調節弁７４と同様の構造になっており、その説明は省略する。 The stove burner valve unit 7 will be described in detail below with reference to Fig. 3. The electromagnetic safety valve 81, the main valve 82, and the manual flame power adjustment valves 831 , 832 of the grill valve unit 8 have the same structures as the electromagnetic safety valve 71, the main valve 72, and the manual flame power adjustment valve 74 of the stove burner valve unit 7, which will be described later, and therefore their description will be omitted.

コンロバーナ用のバルブユニット７は、コンロバーナ用ガス供給路６ａの上流側部分を接続する流入口７０ａとコンロバーナ用ガス供給路６ａの下流側部分を接続する流出口７０ｂとを有するバルブケーシング７０を備えており、このバルブケーシング７０内に、上流側から順に、電磁安全弁７１と元弁７２と電動式火力調節弁７３と手動式火力調節弁７４とが組み込まれている。 The valve unit 7 for the stove burner has a valve casing 70 having an inlet 70a that connects the upstream part of the gas supply line 6a for the stove burner and an outlet 70b that connects the downstream part of the gas supply line 6a for the stove burner. In this valve casing 70, in order from the upstream side, an electromagnetic safety valve 71, a main valve 72, an electric flame control valve 73, and a manual flame control valve 74 are incorporated.

電磁安全弁７１は、弁座７１１と、弁座７１１に上流側たる後方（図３で左方）から着座可能な弁体７１２と、弁体７１２に後方にのびる弁軸７１２ａを介して連結されるアーマチュア７１３と、弁体７１２が弁座７１１から離隔した所定の開弁位置に変位したときにアーマチュア７１３が当接する電磁石７１４と、弁体７１２を弁座７１１に着座する閉弁位置（図３に示す位置）に付勢する弁バネ７１５とを備えている。元弁７２は、弁座７２１と、弁座７２１に後方から着座可能で、後述する操作ロッド７６に固定された弁体７２２と、弁体７２２を弁座７２１に着座する閉弁位置（図３に示す位置）に付勢する弁バネ７２３とを備えている。 The electromagnetic safety valve 71 includes a valve seat 711, a valve body 712 that can be seated on the valve seat 711 from the rear (left side in FIG. 3) on the upstream side, an armature 713 that is connected to the valve body 712 via a valve shaft 712a that extends rearward, an electromagnet 714 that the armature 713 abuts against when the valve body 712 is displaced to a predetermined open position away from the valve seat 711, and a valve spring 715 that urges the valve body 712 to a closed position (position shown in FIG. 3) in which the valve body 712 is seated on the valve seat 711. The main valve 72 includes a valve seat 721, a valve body 722 that can be seated on the valve seat 721 from the rear and is fixed to an operating rod 76 described later, and a valve spring 723 that urges the valve body 722 to a closed position (position shown in FIG. 3) in which the valve body 722 is seated on the valve seat 721.

また、バルブユニット７は、バルブケーシング７０の前端に取付けたガイドブロック７５１に前後方向に摺動自在に支持される手動の操作部材７５を備えている。操作部材７５は、バネ７５２で前方に付勢されて点消火キー１２の裏面に当接しており、点消火キー１２を介して前端の消火位置（図３に示す位置）から後端の点火位置まで押し操作される。更に、操作部材７５は、ハート形のカム溝７５３ａとこれに係合する係合子７５３ｂとから成るプッシュプッシュ機構７５３により、点火位置での押圧解除で消火位置と点火位置との間の所定の燃焼位置に移動して係止され、燃焼位置での押し操作後の押圧解除で消火位置に戻される。 The valve unit 7 also includes a manual operating member 75 supported by a guide block 751 attached to the front end of the valve casing 70 so as to be slidable in the forward and backward directions. The operating member 75 is biased forward by a spring 752 and abuts against the back surface of the ignition/extinguishing key 12, and is pushed from the extinguishing position at the front end (the position shown in FIG. 3) to the ignition position at the rear end via the ignition/extinguishing key 12. Furthermore, the operating member 75 is moved and locked to a predetermined combustion position between the extinguishing position and the ignition position by a push-push mechanism 753 consisting of a heart-shaped cam groove 753a and an engaging piece 753b that engages with it when the operating member 75 is released from the ignition position, and is returned to the extinguishing position when the operating member 75 is released after being pushed at the combustion position.

また、操作部材７５の後方に対向する操作ロッド７６がバルブケーシング７０内に前後方向に進退自在に挿入されている。操作部材７５を消火位置から押し操作すると、操作部材７５に押されて操作ロッド７６が後方に移動し、操作ロッド７６に固定した元弁７２の弁体７２２が弁バネ７２３の付勢力に抗して弁座７２１から離れ、元弁７２が開弁される。操作ロッド７６が更に後方に移動すると、電磁安全弁７１の弁体７１２に操作ロッド７６が当接して、弁体７１２が弁バネ７１５の付勢力に抗して後方に押動される。そして、操作部材７５を点火位置まで押し操作したとき、図４（ａ）に示す如く、アーマチュア７１３が電磁石７１４に当接する開弁位置まで弁体７１２が押動されて電磁安全弁７１が強制開弁されるようにしている。また、操作部材７５を点火位置での押圧解除で弁バネ７２３及びバネ７５２の付勢力により燃焼位置に戻すと、図４（ｂ）に示す如く、元弁７２は開弁状態に維持されるが、操作ロッド７６の後端が電磁安全弁７１の弁座７１１よりも前方に変位して、電磁安全弁７１の強制開弁が解除される。更に、操作部材７５を燃焼位置での押し操作後の押圧解除で弁バネ７２３及びバネ７５２の付勢力により消火位置に戻すと、元弁７２が閉弁される。 In addition, the operating rod 76 facing the rear of the operating member 75 is inserted into the valve casing 70 so as to be freely movable forward and backward. When the operating member 75 is pushed from the extinguishing position, the operating rod 76 is pushed backward by the operating member 75, and the valve body 722 of the main valve 72 fixed to the operating rod 76 moves away from the valve seat 721 against the biasing force of the valve spring 723, and the main valve 72 is opened. When the operating rod 76 moves further backward, the operating rod 76 abuts against the valve body 712 of the electromagnetic safety valve 71, and the valve body 712 is pushed backward against the biasing force of the valve spring 715. Then, when the operating member 75 is pushed to the ignition position, the valve body 712 is pushed to the valve open position where the armature 713 abuts against the electromagnet 714, as shown in FIG. 4(a), and the electromagnetic safety valve 71 is forcibly opened. Furthermore, when the operating member 75 is released from the ignition position and returned to the combustion position by the urging force of the valve spring 723 and the spring 752, the main valve 72 is maintained in an open state as shown in FIG. 4(b), but the rear end of the operating rod 76 is displaced forward of the valve seat 711 of the electromagnetic safety valve 71, and the forced opening of the electromagnetic safety valve 71 is released. Furthermore, when the operating member 75 is released after being pressed in the combustion position and returned to the extinguishing position by the urging force of the valve spring 723 and the spring 752, the main valve 72 is closed.

図５を参照して、ガイドブロック７５１には、操作部材７５の位置を検出するマイクロスイッチ７７が設けられている。このマイクロスイッチ７７は、第１と第２の２つの接点７７１，７７２を有している。操作部材７５が消火位置に存するときは、図５（ａ）に示す如く、第１と第２の両接点７７１，７７２がオフしているが、操作部材７５が燃焼位置に存するときは、図５（ｂ）に示す如く、操作部材７５に設けた第１のカム部７５４１に押されて第１接点７７１がオンし、操作部材７５が点火位置に存するときは、図５（ｃ）に示す如く、操作部材７５に設けた第２のカム部７５４２に押されて、第１接点７７１に加えて第２接点７７２がオンする。 5, the guide block 751 is provided with a microswitch 77 for detecting the position of the operating member 75. The microswitch 77 has two contacts, a first and a second contact 771, 772. When the operating member 75 is in the extinguishing position, both the first and second contacts 771, 772 are OFF as shown in Fig. 5(a), but when the operating member 75 is in the burning position, the first contact 771 is turned ON as shown in Fig. 5(b) by being pushed by a first cam portion 754-1 provided on the operating member 75, and when the operating member 75 is in the ignition position, the second contact 772 is turned ON in addition to the first contact 771 by being pushed by a second cam portion 754-2 provided on the operating member 75, as shown in Fig. 5(c).

第１と第２の各接点７７１，７７２のオンオフ信号は、制御手段たる図外のコントローラに入力される。コントローラは、操作部材７５の消火位置からの押し操作で、操作部材７５が燃焼位置に到達して第１接点７７１がオンしたときに、電磁安全弁７１の電磁石７１４への通電を開始し、操作部材７５が点火位置に到達して第２接点７７２がオンしたときに、コンロバーナ３に付設した点火電極３１でのスパークを行い、コンロバーナ３に点火する。点火後、操作部材７５を燃焼位置に戻すことで第２接点７７２がオフしたときは、点火電極３１でのスパークを終了するが、第１接点７７１がオンしてから所定の待ち時間が経過するまでは電磁安全弁７１の電磁石７１４への通電を継続して、電磁安全弁７１を開弁保持する。この待ち時間の間に、コンロバーナ３に付設した火炎検知素子たる熱電対３２の起電圧が所定レベル以上に上昇すれば、コントローラは、以後、コンロバーナ３の失火で熱電対３２の起電圧が所定レベルを下回るまで電磁石７１４への通電を継続する。操作部材７５を消火位置に戻すことで、第１接点７７１がオフしたときは、電磁石７１４への通電を停止し、元弁７２に加えて電磁安全弁７１を閉弁させる。 The on/off signals of the first and second contacts 771, 772 are input to a controller (not shown) serving as a control means. When the operating member 75 is pushed from the extinguishing position to reach the combustion position and the first contact 771 is turned on, the controller starts energizing the electromagnet 714 of the electromagnetic safety valve 71, and when the operating member 75 reaches the ignition position and the second contact 772 is turned on, a spark is generated at the ignition electrode 31 attached to the burner 3, igniting the burner 3. After ignition, when the operating member 75 is returned to the combustion position to turn off the second contact 772, the spark at the ignition electrode 31 is terminated, but until a predetermined waiting time has elapsed since the first contact 771 was turned on, the electromagnetic safety valve 71 continues to be energized to the electromagnet 714, thereby holding the electromagnetic safety valve 71 open. During this waiting time, if the electromotive force of the thermocouple 32, which is the flame detection element attached to the stove burner 3, rises above a predetermined level, the controller continues to energize the electromagnet 714 until the stove burner 3 misfires and the electromotive force of the thermocouple 32 falls below the predetermined level. When the operating member 75 is returned to the extinguishing position and the first contact 771 is turned off, the electromagnet 714 is stopped from being energized, and the electromagnetic safety valve 71 is closed in addition to the main valve 72.

手動式火力調節弁７４は、流出口７０ｂに連なる弁孔７４１ａを開設した、バルブケーシング７０の上部の弁座７４１と、弁座７４１に上流側たる前方から接近可能なニードル弁体７４２とを備えている。ニードル弁体７４２のバルブケーシング７０外に突出する前端部には、上方にのびるピン７４３が固定されている。また、火力調節レバー１３は、バルブケーシング７０の上端面に突設したボス部７０１により、横方向に揺動自在に軸支されている。更に、火力調節レバー１３には、前後方向に対し横方向に傾斜した長孔状のカム孔１３１が形成されている。そして、ピン７４３を、バルブケーシング７０の上端に固定のガイド板７０２に形成した前後方向に長手のガイド孔７０２ａを通してカム孔１３１に係合させている。これにより、火力調節レバー１３の横方向への揺動で、カム孔１３１を介してピン７４３、即ち、ニードル弁体７４２が前後方向に進退し、コンロバーナ３の火力が調節される。 The manual flame control valve 74 is equipped with a valve seat 741 at the top of the valve casing 70, which has a valve hole 741a connected to the outlet 70b, and a needle valve body 742 that can approach the valve seat 741 from the front, i.e., the upstream side. A pin 743 extending upward is fixed to the front end of the needle valve body 742 that protrudes outside the valve casing 70. The flame control lever 13 is supported by a boss portion 701 protruding from the upper end surface of the valve casing 70 so that it can swing freely in the horizontal direction. Furthermore, the flame control lever 13 is formed with a cam hole 131 in the shape of a long hole that is inclined horizontally with respect to the front-to-rear direction. The pin 743 is engaged with the cam hole 131 through a guide hole 702a long in the front-to-rear direction formed in a guide plate 702 fixed to the upper end of the valve casing 70. As a result, when the flame adjustment lever 13 swings sideways, the pin 743, i.e., the needle valve body 742, moves back and forth through the cam hole 131, adjusting the flame of the stove burner 3.

ここで、ニードル弁体７４２は、弁孔７４１ａに挿入可能なニードル部７４２ａと、弁座７４１に着座可能な閉塞部７４２ｂと、閉塞部７４２ｂが弁座７４１に着座した状態での弁体７４２の上流側から弁孔７４１ａにガスを流すオリフィス孔７４２ｃとを有している。閉塞部７４２ｂが弁座７４１に着座する状態が手動式火力調節弁７４の最小火力位置であって、コンロバーナ３の火力はオリフィス孔７４２ｃで規定される最小火力となる。また、ニードル部７４２ａが弁孔７４１ａから完全に抜け出た状態が、手動式火力調節弁７４の最大火力位置になる。電動式火力調節弁７３を後述する最大火力位置にした状態で、手動式火力調節弁７４を最小火力位置から最大火力位置まで変化させると、コンロバーナ３の火力は図６に示す如く変化する。 Here, the needle valve body 742 has a needle portion 742a that can be inserted into the valve hole 741a, a blocking portion 742b that can be seated on the valve seat 741, and an orifice hole 742c that allows gas to flow from the upstream side of the valve body 742 to the valve hole 741a when the blocking portion 742b is seated on the valve seat 741. The state in which the blocking portion 742b is seated on the valve seat 741 is the minimum heat position of the manual flame control valve 74, and the flame of the stove burner 3 is the minimum heat specified by the orifice hole 742c. Also, the state in which the needle portion 742a is completely removed from the valve hole 741a is the maximum heat position of the manual flame control valve 74. When the motorized heat control valve 73 is set to the maximum heat position described below and the manual heat control valve 74 is changed from the minimum heat position to the maximum heat position, the heat of the stove burner 3 changes as shown in FIG. 6.

また、操作部材７５を点火位置まで押し操作する点火操作時は、連動機構７８を介して手動式火力調節弁７４を最小火力位置と最大火力位置との間の所定の点火火力位置（図３に示す位置）にする。連動機構７８は、図７に示す如く、火力調節レバー１３に一体の一対の羽根部７８１，７８１と、これら羽根部７８１，７８１に前方から対向する操作部材７５に一体の一対の爪部７８２，７８２とで構成されている。一対の羽根部７８１，７８１は、バルブケーシング７０の前面に揺動自在に支持される中間の支点部７８１ａを介して連結されている。火力調節レバー１３が点火火力位置に対応する揺動位置（以下、点火揺動位置と記す）に存するときは、これら羽根部７８１，７８１は、図７に示す中立位置に存する。火力調節レバー１３が点火揺動位置に存しない状態で、操作部材７５を点火位置まで押し込んだときは、片側の羽根部７８１に片側の爪部７８２が当接して、この羽根部７８１が中立位置に押し動かされ、火力調節レバー１３が点火揺動位置に揺動される。これにより、手動式火力調節弁７４は、点火火力位置になる。 In addition, when the operating member 75 is pushed to the ignition position, the manual flame control valve 74 is set to a predetermined ignition flame position (position shown in FIG. 3) between the minimum flame position and the maximum flame position via the interlocking mechanism 78. As shown in FIG. 7, the interlocking mechanism 78 is composed of a pair of blades 781, 781 integral with the flame control lever 13, and a pair of claws 782, 782 integral with the operating member 75 facing the blades 781, 781 from the front. The pair of blades 781, 781 are connected via an intermediate fulcrum 781a that is supported to be freely swingable on the front surface of the valve casing 70. When the flame control lever 13 is in a swing position corresponding to the ignition flame position (hereinafter referred to as the ignition swing position), the blades 781, 781 are in the neutral position shown in FIG. 7. When the operating member 75 is pushed to the ignition position while the flame adjustment lever 13 is not in the ignition swing position, the claw portion 782 on one side comes into contact with the blade portion 781 on one side, pushing the blade portion 781 to the neutral position and swinging the flame adjustment lever 13 to the ignition swing position. This places the manual flame adjustment valve 74 in the ignition flame position.

電動式火力調節弁７３は、コンロバーナ３へのガス供給を停止する全閉状態に切換え自在であって、付勢手段７３４により開き方向に付勢され、ステッピングモータ等から成るモータ７３５により運動変換機構７３６を介して駆動される直動部材７３７により付勢手段７３４の付勢力に抗して全閉状態に切換えられるように構成されている。図８を参照して、より具体的に説明すれば、電動式火力調節弁７３は、弁座７３１と、弁座７３１に接近する閉じ方向（図８の右方）と弁座７３１から離隔する開き方向（図８の左方）とに移動自在な主弁体７３２と、主弁体７３２に対し開き方向に対向する、直動部材７３７に当接する副弁体７３３とを備えている。主弁体７３２は、弁座７３１に開設した弁孔７３１ａに挿入可能なニードル部７３２ａと、弁座７３１に着座可能な弾性材料製の閉塞部７３２ｂと、閉塞部７３２ｂが弁座７３１に着座した状態でも主弁体７３２の上流側から下流側にガスを流すオリフィス孔７３２ｃと、副弁体７３３が着座可能で、オリフィス孔７３２ｃが開口する副弁座７３２ｄとを有している。副弁体７３３には、副弁座７３２ｄに着座した状態でのシール性を向上するため、副弁座７３２ｄに対向する弾性材料製のパッキン７３３ａが取付けられている。 The electric flame control valve 73 can be freely switched to a fully closed state that stops the gas supply to the stove burner 3, and is configured to be switched to the fully closed state against the biasing force of the biasing means 734 by a linear member 737 driven by a motor 735 consisting of a stepping motor or the like via a motion conversion mechanism 736. Explained more specifically with reference to FIG. 8, the electric flame control valve 73 has a valve seat 731, a main valve body 732 that can move in a closing direction (rightward in FIG. 8) approaching the valve seat 731 and an opening direction (leftward in FIG. 8) moving away from the valve seat 731, and a sub-valve body 733 that abuts against the linear member 737 and faces the main valve body 732 in the opening direction. The main valve body 732 has a needle portion 732a that can be inserted into a valve hole 731a opened in the valve seat 731, a blocking portion 732b made of an elastic material that can be seated on the valve seat 731, an orifice hole 732c that allows gas to flow from the upstream side to the downstream side of the main valve body 732 even when the blocking portion 732b is seated on the valve seat 731, and a sub-valve seat 732d on which the sub-valve body 733 can be seated and on which the orifice hole 732c is open. A packing 733a made of an elastic material that faces the sub-valve seat 732d is attached to the sub-valve body 733 to improve sealing performance when seated on the sub-valve seat 732d.

付勢手段７３４は、主弁体７３２を開き方向に付勢する第１の付勢手段７３４ａと、主弁体７３２に対し副弁体７３３を第１の付勢手段７３４ａよりも強い力で開き方向に付勢する第２の付勢手段７３４ｂとで構成されている。また、主弁体７３２に対する副弁体７３３の開き方向への移動を定位置で制止するストッパ手段７３８を備えている。このストッパ手段７３８は、副弁体７３３を囲う主弁体７３２の筒部７３２ｅに形成した窓孔７３８ａと、副弁体７３３の外周面に突設した、窓孔７３８ａに遊びを持って挿入される爪部７３８ｂとで構成されている。そして、窓孔７３８ａの開き方向の端縁に爪部７３８ｂが係合したところで、副弁体７３３が主弁体７３２に対しそれ以上開き方向に移動しないようにしている。 The biasing means 734 is composed of a first biasing means 734a that biases the main valve body 732 in the opening direction, and a second biasing means 734b that biases the sub-valve body 733 in the opening direction relative to the main valve body 732 with a force stronger than that of the first biasing means 734a. It also has a stopper means 738 that stops the movement of the sub-valve body 733 in the opening direction relative to the main valve body 732 at a fixed position. This stopper means 738 is composed of a window hole 738a formed in the cylindrical portion 732e of the main valve body 732 that surrounds the sub-valve body 733, and a claw portion 738b that protrudes from the outer circumferential surface of the sub-valve body 733 and is inserted into the window hole 738a with some play. When the claw portion 738b engages with the edge of the window hole 738a in the opening direction, the sub-valve body 733 is prevented from moving further in the opening direction relative to the main valve body 732.

運動変換機構７３６は、モータ７３５の出力軸７３５ａに連結される雄ねじ７３６ａと、雄ねじ７３６ａが螺合する、回り止めされた摺動子７３６ｂとから成る送りねじ機構で構成されている。摺動子７３６ｂは、運動変換機構７３６の配置部をガスシールするダイヤフラム７３７ａに当接しており、このダイヤフラム７３７ａに直動部材７３７を連結している。 The motion conversion mechanism 736 is composed of a feed screw mechanism consisting of a male screw 736a connected to the output shaft 735a of the motor 735 and a non-rotating slider 736b into which the male screw 736a screws. The slider 736b abuts against a diaphragm 737a that gas-seals the location of the motion conversion mechanism 736, and the linear motion member 737 is connected to this diaphragm 737a.

図８に示す如く、主弁体７３２の閉塞部７３２ｂが弁座７３１に着座すると共に、副弁体７３３が主弁体７３２の副弁座７３２ｄに着座してオリフィス孔７３２ｃを閉塞する状態が、電動式火力調節弁７３の全閉状態であって、コンロバーナ３へのガス供給が停止される。この全閉状態からモータ７３５により運動変換機構７３６を介して直動部材７３７を開き方向に移動させると、副弁体７３３が第２の付勢手段７３４ｂの付勢力により直動部材７３７に追従して開き方向に移動する。主弁体７３２に対する副弁体７３３の開き方向への移動がストッパ手段７３８で制止されるまでは、主弁体７３２の開き方向への移動が第２の付勢手段７３４ｂの付勢力によって阻止されて、主弁体７３２の閉塞部７３２ｂが弁座７３１に着座した状態に維持されると共に、副弁体７３３が副弁座７３２ｄから離隔して、オリフィス孔７３２ｃが開放され、電動式火力調節弁７３は、コンロバーナ３の火力をオリフィス孔７３２ｃで規定される最小火力とする最小火力位置になる。主弁体７３２に対する副弁体７３３の開き方向への移動がストッパ手段７３８で制止された後、副弁体７３３を更に開き方向に移動させれば、主弁体７３２が第１の付勢手段７３４ａの付勢力により副弁体７３３に追従して開き方向に移動し、主弁体７３２の閉塞部７３２ｂが弁座７３１から離隔して、コンロバーナ３の火力が増加する。そして、主弁体７３２のニードル部７３２ａが弁孔７３１ａから完全に抜け出た状態が、電動式火力調節弁７３の最大火力位置になる。手動式火力調節弁７４を最大火力位置にした状態で、電動式火力調節弁７３を全閉状態から最大火力位置まで変化させると、コンロバーナ３の火力は図９に示す如く変化する。 8, the state in which the blocking portion 732b of the main valve body 732 is seated on the valve seat 731 and the sub-valve body 733 is seated on the sub-valve seat 732d of the main valve body 732 to block the orifice hole 732c is the fully closed state of the electric flame control valve 73, and gas supply to the stove burner 3 is stopped. When the linear motion member 737 is moved in the opening direction by the motor 735 via the motion conversion mechanism 736 from this fully closed state, the sub-valve body 733 moves in the opening direction following the linear motion member 737 due to the biasing force of the second biasing means 734b. Until the movement of the sub-valve body 733 in the opening direction relative to the main valve body 732 is stopped by the stopper means 738, the movement of the main valve body 732 in the opening direction is prevented by the biasing force of the second biasing means 734b, the blocking portion 732b of the main valve body 732 is maintained seated on the valve seat 731, the sub-valve body 733 is separated from the sub-valve seat 732d, the orifice hole 732c is opened, and the electric flame power control valve 73 is in the minimum flame power position where the flame power of the stove burner 3 is the minimum flame power defined by the orifice hole 732c. After the movement of the sub-valve body 733 in the opening direction relative to the main valve body 732 is stopped by the stopper means 738, if the sub-valve body 733 is further moved in the opening direction, the main valve body 732 moves in the opening direction following the sub-valve body 733 due to the biasing force of the first biasing means 734a, and the blocking part 732b of the main valve body 732 moves away from the valve seat 731, increasing the flame power of the stove burner 3. Then, when the needle part 732a of the main valve body 732 is completely removed from the valve hole 731a, the electric flame power control valve 73 is at its maximum flame power position. When the electric flame power control valve 73 is changed from the fully closed state to the maximum flame power position with the manual flame power control valve 74 in its maximum flame power position, the flame power of the stove burner 3 changes as shown in FIG. 9.

コンロバーナ３には、五徳４上の調理容器の底面に当接する鍋底温度センサ３３が付設されている。そして、コントローラは、温調モードでの調理が選択されたとき、鍋底温度センサ３３の検出温度が所定の設定温度になるよう電動式火力調節弁７３を介してコンロバーナ３の火力を最小火力と最大火力との間で調節する温調制御を行う。 The stove burner 3 is equipped with a pot bottom temperature sensor 33 that contacts the bottom surface of the cooking container on the trivet 4. When cooking in temperature control mode is selected, the controller performs temperature control to adjust the heat of the stove burner 3 between minimum and maximum heat via the electric heat control valve 73 so that the temperature detected by the pot bottom temperature sensor 33 becomes a specified set temperature.

また、本実施形態のガスコンロは、五徳４上の調理容器の有無を検知する調理容器検知手段９を備えている。具体的には、鍋底温度センサ３３を利用して調理容器検知手段９を構成している。ここで、鍋底温度センサ３３は、昇降自在に支持されている。そこで、図１０に示す如く、鍋底温度センサ３３と一緒に昇降する部材に取付けたドグ９２と協働するマイクロスイッチ９１を設け、これらマイクロスイッチ９１とドグ９２により調理容器検知手段９を構成している。五徳４上に調理容器が無いときは、図１０（ａ）に示す如く、鍋底温度センサ３３が上昇して、マイクロスイッチ９１はオフとなり、五徳４上に調理容器Ｐが有るときは、図１０（ｂ）に示す如く、鍋底温度センサ３３が下降して、マイクロスイッチ９１はドグ９２に押されてオンになる。 The gas stove of this embodiment also includes a cooking vessel detection means 9 that detects the presence or absence of a cooking vessel on the trivet 4. Specifically, the cooking vessel detection means 9 is configured using a pot bottom temperature sensor 33. Here, the pot bottom temperature sensor 33 is supported so that it can be raised and lowered freely. Therefore, as shown in FIG. 10, a microswitch 91 is provided that cooperates with a dog 92 attached to a member that rises and falls together with the pot bottom temperature sensor 33, and the cooking vessel detection means 9 is configured by these microswitch 91 and dog 92. When there is no cooking vessel on the trivet 4, as shown in FIG. 10(a), the pot bottom temperature sensor 33 rises and the microswitch 91 is turned off, and when there is a cooking vessel P on the trivet 4, as shown in FIG. 10(b), the pot bottom temperature sensor 33 falls and the microswitch 91 is pressed by the dog 92 and turned on.

ここで、安全性を確保するには、五徳４上に調理容器が無い状態でコンロバーナ３に点火することを阻止する必要がある。そこで、操作部材７５による点火操作時に、調理容器検知手段９で調理容器無しを検知した場合は、点火電極３１でのスパークを中止し、更に、電動式火力調節弁７３を全閉状態に切換えて、コンロバーナ３から生ガスが放出されないようにしている。 To ensure safety, it is necessary to prevent the stove burner 3 from being ignited when there is no cooking vessel on the trivet 4. Therefore, if the cooking vessel detection means 9 detects that there is no cooking vessel when the operating member 75 is used to ignite the stove, the spark at the ignition electrode 31 is stopped, and furthermore, the motorized flame control valve 73 is switched to a fully closed state to prevent raw gas from being released from the stove burner 3.

また、操作部材７５による点火操作時は、手動式火力調節弁７４を連動機構７８により上記の如く最小火力位置と最大火力位置との間の所定の点火火力位置として、点火時に、調理容器の底面から外方に火炎が溢れ出る炎溢れを生じないようにしている。然し、使用者によっては、強い火力で調理を開始したくて、操作部材７５による点火操作とほぼ同時に手動式火力調節弁７４を火力調節レバー１３の操作で点火火力位置から最大火力位置に切換えてしまうことがある。この場合は、点火時の炎溢れを防止することができなくなる。そこで、操作部材７５による点火操作時に、電動式火力調節弁７３を、最小火力位置と最大火力位置との間の所定の中間火力位置にするようにしている。この中間火力位置は、手動式火力調節弁７４を点火火力位置から最大火力位置側に操作しても、コンロバーナ３の火力が点火火力位置で得られる火力より大きくなることを抑制できる位置、例えば、手動式火力調節弁７４の点火火力位置での開度と同等開度になる位置に設定される。 When the operating member 75 is used to perform the ignition operation, the manual heat control valve 74 is set to a predetermined ignition heat position between the minimum heat position and the maximum heat position by the interlocking mechanism 78 as described above, so that the flame does not overflow from the bottom of the cooking vessel when the ignition operation is performed. However, some users may want to start cooking with a strong heat and may switch the manual heat control valve 74 from the ignition heat position to the maximum heat position by operating the heat control lever 13 almost at the same time as the ignition operation using the operating member 75. In this case, it becomes impossible to prevent the flame from overflowing when the ignition operation is performed. Therefore, when the operating member 75 is used to perform the ignition operation, the motorized heat control valve 73 is set to a predetermined intermediate heat position between the minimum heat position and the maximum heat position. This intermediate heat position is set to a position that prevents the heat of the stove burner 3 from becoming greater than the heat obtained at the ignition heat position, even if the manual heat control valve 74 is operated from the ignition heat position toward the maximum heat position, for example, a position that is set to the same opening as when the manual heat control valve 74 is in the ignition heat position.

これによれば、操作部材７５による点火操作とほぼ同時に手動火力調節弁７４を点火火力位置から最大火力位置に切換え操作しても、点火操作時は電動式火力調節弁７３が中間火力位置になっているため、コンロバーナ３の火力が点火火力位置で得られる火力より大きくなることが抑制される。その結果、点火時の炎溢れをより確実に抑制することができる。 According to this, even if the manual flame control valve 74 is switched from the ignition flame position to the maximum flame position almost simultaneously with the ignition operation using the operating member 75, the electric flame control valve 73 is in the intermediate flame position during the ignition operation, so the flame power of the stove burner 3 is prevented from becoming greater than the flame power obtained at the ignition flame position. As a result, flame overflow at the time of ignition can be more reliably prevented.

以下、コントローラによる電動式火力調節弁７３の制御内容を図１１を参照して説明する。電動式火力調節弁７３の制御では、先ず、ＳＴＥＰ１において、操作部材７５による点火操作が行われたか否か、具体的には、操作部材７５が点火位置まで押し込まれてマイクロスイッチ７７の第１と第２の両接点７７１，７７２がオンしたか否かを判別する。そして、操作部材７５による点火操作時は、ＳＴＥＰ２に進み、マイクロスイッチ９１のオンオフで五徳４上の調理容器の有無を検知する。マイクロスイッチ９１がオンし、調理容器有りを検知した場合は、ＳＴＥＰ３に進み、電動式火力調節弁７３を中間火力位置に切換える。 The control of the electric heat adjustment valve 73 by the controller will be described below with reference to FIG. 11. In controlling the electric heat adjustment valve 73, first in STEP 1, it is determined whether the ignition operation has been performed using the operating member 75, specifically, whether the operating member 75 has been pushed into the ignition position and both the first and second contacts 771, 772 of the microswitch 77 have been turned on. When the ignition operation has been performed using the operating member 75, the process proceeds to STEP 2, where the presence or absence of a cooking vessel on the trivet 4 is detected by the on/off state of the microswitch 91. If the microswitch 91 is turned on and the presence of a cooking vessel is detected, the process proceeds to STEP 3, where the electric heat adjustment valve 73 is switched to the medium heat position.

次に、ＳＴＥＰ４に進み、操作部材７５が燃焼位置に戻されたか否か、具体的には、マイクロスイッチ７７の第１接点７７１がオンで、第２接点７７２がオフになったか否かを判別する。操作部材７５が燃焼位置に戻されると、ＳＴＥＰ５に進み、コンロバーナ３への点火が火炎検知素子たる熱電対３２で検知されたか否か、具体的には、熱電対３２の起電圧が所定レベルに上昇したか否かを判別する。点火が検知されたときは、ＳＴＥＰ６に進んで電動式火力調節弁７３を最大火力位置に切換える。これにより、コンロバーナ３の火力を、電動式火力調節弁７３で律速されることなく、手動式火力調節弁７４により最大火力まで増加させることができる。尚、図示しないが、、温調モードの選択時は、鍋底温度センサ３３の検出温度に基づく電動式火力調節弁７３の制御を行う。 Next, proceed to STEP 4 and determine whether the operating member 75 has been returned to the combustion position, specifically, whether the first contact 771 of the microswitch 77 is on and the second contact 772 is off. When the operating member 75 has been returned to the combustion position, proceed to STEP 5 and determine whether the ignition of the stove burner 3 has been detected by the thermocouple 32, which is the flame detection element, specifically, whether the electromotive voltage of the thermocouple 32 has risen to a predetermined level. When ignition is detected, proceed to STEP 6 and switch the electric flame control valve 73 to the maximum flame position. This allows the flame of the stove burner 3 to be increased to the maximum flame by the manual flame control valve 74 without being regulated by the electric flame control valve 73. Although not shown, when the temperature adjustment mode is selected, the electric flame control valve 73 is controlled based on the temperature detected by the pot bottom temperature sensor 33.

次に、ＳＴＥＰ７に進み、操作部材７５による消火操作が行われたか否か、具体的には、操作部材７５が消火位置に戻されて、マイクロスイッチ７７の第１と第２の両接点７７１，７７２がオフしたか否かを判別する。そして、操作部材７５による消火操作時は、ＳＴＥＰ８で電動式火力調節弁７３を所定の待機位置に切換えた後ＳＴＥＰ１に戻り、次の点火操作まで電動式火力調節弁７３を待機位置で待機させる。 Next, proceed to STEP 7 to determine whether or not the extinguishing operation has been performed using the operating member 75, specifically, whether or not the operating member 75 has been returned to the extinguishing position and both the first and second contacts 771, 772 of the microswitch 77 have been turned off. Then, when the extinguishing operation has been performed using the operating member 75, in STEP 8 the electrically operated fire power control valve 73 is switched to a predetermined standby position, and then the process returns to STEP 1, where the electrically operated fire power control valve 73 waits in the standby position until the next ignition operation.

ＳＴＥＰ２において、マイクロスイッチ９１がオフのままで、調理容器無しを検知した場合は、ＳＴＥＰ９に進んで電動式火力調節弁７３を全閉状態に切換え、更に、ＳＴＥＰ１０で調理容器無しであることを報知するエラー表示を行う。このように電動式火力調節弁７３を全閉状態に切換えれば、点火操作時に電磁安全弁７１と元弁７２とが開弁されていても、コンロバーナ３にガスは供給されない。次に、ＳＴＥＰ１１で操作部材７５による点火操作が終了したか否か、具体的には、操作部材７５が点火位置での押圧解除で燃焼位置に戻されてマイクロスイッチ７７の第２接点７７２がオフされたか否かを判別し、点火操作が終了するまでは、ＳＴＥＰ１０に戻ってエラー表示を継続する。そして、点火操作が終了したときに、ＳＴＥＰ８に進んで電動式火力調節弁７３を待機位置に切換える。 In STEP 2, if the microswitch 91 remains off and no cooking vessel is detected, the process proceeds to STEP 9, the electric heat control valve 73 is switched to a fully closed state, and an error message is displayed in STEP 10 to inform the user that no cooking vessel is present. By switching the electric heat control valve 73 to a fully closed state in this manner, gas is not supplied to the burner 3 even if the electromagnetic safety valve 71 and the main valve 72 are open during the ignition operation. Next, in STEP 11, it is determined whether the ignition operation using the operating member 75 has been completed, specifically, whether the operating member 75 has been returned to the combustion position by releasing the pressure at the ignition position and the second contact 772 of the microswitch 77 has been turned off, and the process returns to STEP 10 to continue displaying the error until the ignition operation is completed. Then, when the ignition operation is completed, the process proceeds to STEP 8, and the electric heat control valve 73 is switched to the standby position.

ここで、待機位置を中間火力位置に設定すれば、操作部材７５による点火操作時に電動式火力調節弁７３を駆動せずに済む。然し、これでは、点火操作時に調理容器無しを検知した場合、電動式火力調節弁７３を中間火力位置から全閉状態に切換えることが必要になり、この切換に要する時間中に生ガスが放出されてしまう。そこで、本実施形態では、待機位置を全閉状態又は全閉状態の近傍の位置、例えば、最小火力位置に設定している。これによれば、点火操作時に調理容器無しを検知した場合、電動式火力調節弁７３を直ちに全閉状態にして、生ガスの放出を防止できる。 Here, if the standby position is set to the intermediate heat position, the motorized heat adjustment valve 73 does not need to be driven when the ignition operation is performed using the operating member 75. However, if this is done, if the absence of a cooking container is detected during the ignition operation, the motorized heat adjustment valve 73 must be switched from the intermediate heat position to a fully closed state, and raw gas will be released during the time required for this switching. Therefore, in this embodiment, the standby position is set to a fully closed state or a position close to the fully closed state, for example, the minimum heat position. According to this, if the absence of a cooking container is detected during the ignition operation, the motorized heat adjustment valve 73 can be immediately switched to a fully closed state to prevent the release of raw gas.

尚、点火操作時に調理容器有りを検知した場合は、電動式火力調節弁７３を全閉状態又は全閉状態の近傍の待機位置から中間火力位置に切換えることが必要になる。但し、電動式火力調節弁７３は、付勢手段７３４により開き方向に付勢されているため、電動式火力調節弁７３を開き方向に動作させる際に殆ど負荷は係らず、モータ７３５を高速回転させることができる。従って、点火操作時に調理容器有りを検知した場合は、電動式火力調節弁７３をモータ７３５の高速回転で全閉状態又は全閉状態の近傍の待機位置から中間火力位置に速やかに切換えて、コンロバーナ３に応答性よく点火することができる。 If the presence of a cooking container is detected during the ignition operation, it is necessary to switch the electric heat control valve 73 from the fully closed state or a standby position close to the fully closed state to the intermediate heat position. However, since the electric heat control valve 73 is biased in the opening direction by the biasing means 734, almost no load is applied when operating the electric heat control valve 73 in the opening direction, and the motor 735 can be rotated at high speed. Therefore, if the presence of a cooking container is detected during the ignition operation, the electric heat control valve 73 can be quickly switched from the fully closed state or a standby position close to the fully closed state to the intermediate heat position by the high speed rotation of the motor 735, and the stove burner 3 can be ignited with good responsiveness.

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、電動式火力調節弁７３を主弁体７３２と副弁体７３３とを備えるものとしているが、単一の弁体を備える型式の電動式火力調節弁を用いることも可能である。更に、上記実施形態では、調理容器検知手段９を、五徳４上の調理容器の有無を鍋底温度センサ３３の昇降を利用して検知するように構成しているが、光学センサ等の他の手段で調理容器検知手段９を構成することも可能である。 Although the embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited thereto. For example , in the above embodiment, the motorized heat control valve 73 is provided with the main valve body 732 and the sub-valve body 733, but it is also possible to use a motorized heat control valve of a type having a single valve body. Furthermore, in the above embodiment, the cooking vessel detection means 9 is configured to detect the presence or absence of a cooking vessel on the trivet 4 by utilizing the rise and fall of the pot bottom temperature sensor 33, but the cooking vessel detection means 9 can also be configured with other means such as an optical sensor.

また、本発明は、調理容器検知手段９を具備しないガスコンロにも適用可能である。この場合は、電動式火力調節弁７３の待機位置を中間火力位置に設定してもよい。更に、上記実施形態において、手動式火力調節弁７４は、揺動式の火力調節レバー１３で操作されるが、回転摘みにより回転操作される型式のものとすることも可能である。 The present invention can also be applied to gas stoves that do not have a cooking vessel detection means 9. In this case, the standby position of the electric heat control valve 73 may be set to a medium heat position. Furthermore, in the above embodiment, the manual heat control valve 74 is operated by a swinging heat control lever 13, but it is also possible to use a type that is rotated by a rotary knob.

２…天板、３…コンロバーナ、４…五徳、６ａ…コンロバーナ用ガス供給路（コンロバーナに対するガス供給路）、７３…電動式火力調節弁、７３５…モータ、７４…手動式火力調節弁、７５…操作部材、７８…連動機構、９…調理容器検知手段。 2...top plate, 3...burner, 4...trivet, 6a...gas supply path for burner (gas supply path for burner), 73...electric flame control valve, 735...motor, 74...manual flame control valve, 75...operating member, 78...linkage mechanism, 9...cooking vessel detection means.

Claims (3)

天板上の五徳に載置した調理容器を加熱するコンロバーナと、コンロバーナの点火操作及び消火操作を行う手動の操作部材と、コンロバーナに対するガス供給路に介設した手動操作される手動式火力調節弁と、ガス供給路に手動式火力調節弁と直列に介設したモータで駆動される電動式火力調節弁とを備えるガスコンロであって、操作部材による点火操作時に、手動式火力調節弁を最小火力位置と最大火力位置との間の所定の点火火力位置にする連動機構が設けられるものにおいて、
操作部材による点火操作時に、電動式火力調節弁を、最小火力位置と最大火力位置との間の所定の中間火力位置にするようにし、この中間火力位置は、手動式火力調節弁を点火火力位置から最大火力位置側に操作しても、コンロバーナの火力が点火火力位置で得られる火力より大きくなることを抑制できる位置に設定されることを特徴とするガスコンロ。 A gas stove comprising a stove burner for heating a cooking vessel placed on a trivet on a top plate, a manual operating member for igniting and extinguishing the stove burner, a manually operated manual flame control valve disposed in a gas supply path to the stove burner, and an electric flame control valve disposed in series with the manual flame control valve in the gas supply path and driven by a motor, wherein an interlocking mechanism is provided for setting the manual flame control valve to a predetermined ignition flame position between a minimum flame position and a maximum flame position when the operating member is used for ignition,
This gas stove is characterized in that, when an ignition operation is performed using an operating member, an electrically operated flame control valve is set to a predetermined intermediate flame position between a minimum flame position and a maximum flame position, and this intermediate flame position is set to a position that prevents the flame power of the stove burner from becoming greater than the flame power obtained at the ignition flame position, even if a manual flame control valve is operated from the ignition flame position toward the maximum flame position. 前記五徳上の調理容器の有無を検知する調理容器検知手段を備え、前記操作部材による点火操作時に、調理容器検知手段で調理容器無しを検知した場合は、前記電動式火力調節弁を全閉状態にして、コンロバーナへのガス供給を停止するようにし、操作部材による消火操作時に、電動式火力調節弁を所定の待機位置に切換えて次の点火操作まで待機させるようにし、この待機位置は、全閉状態又は全閉状態の近傍の位置に設定され、操作部材による点火操作時に、調理容器検知手段で調理容器有りを検知した場合は、電動式火力調節弁を待機位置から前記中間火力位置に切換え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, further comprising a cooking vessel detection means for detecting the presence or absence of a cooking vessel on the trivet, and if the cooking vessel detection means detects the absence of a cooking vessel during the ignition operation using the operating member, the motorized flame control valve is fully closed to stop the gas supply to the stove burner, and when the extinguishing operation is performed using the operating member, the motorized flame control valve is switched to a predetermined standby position to wait until the next ignition operation, and this standby position is set to a position close to the fully closed state, and if the cooking vessel detection means detects the presence of a cooking vessel during the ignition operation using the operating member, the motorized flame control valve is switched from the standby position to the intermediate flame position. 前記操作部材による点火操作後、前記コンロバーナへの点火がコンロバーナに付設する火炎検知素子で検知されたときは、前記電動式火力調節弁を前記中間火力位置から最大火力位置に切換えることを特徴とする請求項１又は２記載のガスコンロ。 A gas stove as claimed in claim 1 or 2, characterized in that, after the ignition operation by the operating member, when the ignition of the stove burner is detected by a flame detection element attached to the stove burner, the electrically operated flame control valve is switched from the intermediate flame position to the maximum flame position.
JP2020106764A 2020-06-22 2020-06-22 Gas stove Active JP7499085B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2020106764A JP7499085B2 (en) 2020-06-22 2020-06-22 Gas stove
TW109144385A TW202200938A (en) 2020-06-22 2020-12-16 Gas stove for suppressing the heat power of the stove burner from becoming larger than the heat power obtained at the ignition heat power position
CN202110607509.2A CN113898979A (en) 2020-06-22 2021-06-01 Gas stove

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020106764A JP7499085B2 (en) 2020-06-22 2020-06-22 Gas stove

Publications (2)

Publication Number Publication Date
JP2022001812A JP2022001812A (en) 2022-01-06
JP7499085B2 true JP7499085B2 (en) 2024-06-13

Family

ID=79187477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020106764A Active JP7499085B2 (en) 2020-06-22 2020-06-22 Gas stove

Country Status (3)

Country Link
JP (1) JP7499085B2 (en)
CN (1) CN113898979A (en)
TW (1) TW202200938A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010014342A (en) 2008-07-03 2010-01-21 Rinnai Corp Fire power regulator in gas cooker
JP2010185634A (en) 2009-02-13 2010-08-26 Rinnai Corp Gas stove
JP2010216693A (en) 2009-03-16 2010-09-30 Rinnai Corp Gas stove
US20200217503A1 (en) 2019-01-04 2020-07-09 Haier Us Appliance Solutions, Inc. Gas cooktop with power management

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010014342A (en) 2008-07-03 2010-01-21 Rinnai Corp Fire power regulator in gas cooker
JP2010185634A (en) 2009-02-13 2010-08-26 Rinnai Corp Gas stove
JP2010216693A (en) 2009-03-16 2010-09-30 Rinnai Corp Gas stove
US20200217503A1 (en) 2019-01-04 2020-07-09 Haier Us Appliance Solutions, Inc. Gas cooktop with power management

Also Published As

Publication number Publication date
TW202200938A (en) 2022-01-01
JP2022001812A (en) 2022-01-06
CN113898979A (en) 2022-01-07

Similar Documents

Publication Publication Date Title
JP2006308228A (en) Gas cooker
JP5538456B2 (en) Gas combustion equipment
JP7499085B2 (en) Gas stove
JP6005080B2 (en) Thermal power control device
JP7303097B2 (en) Gas stove
JP6621684B2 (en) Gas stove
JP6166071B2 (en) Gas stove
JP3566031B2 (en) Gas stove with temperature control function
JP7303098B2 (en) Gas stove
JP6532698B2 (en) Gas stove
JPH11108344A (en) Thermal power adjuster in gas stove
JP6978915B2 (en) Gas stove
CN109869749B (en) Stove and accessory
JP6951275B2 (en) Cooker
JP5530303B2 (en) Gas stove fire extinguishing button
JP7166087B2 (en) Gas stove
JP6512629B2 (en) Gas stove
JP7000141B2 (en) Gas valve device for cooking cookers
JP2019184177A (en) Heating cooker
JP4159554B2 (en) Gas cock device
JP6534266B2 (en) Gas stove
JP5043490B2 (en) Cooking equipment
JPH0330704Y2 (en)
JP6130227B2 (en) Gas stove
JP2001248828A (en) Gas burning appliance

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20230525

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20231124

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20231205

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20240326

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20240417

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: 20240507

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20240603

R150 Certificate of patent or registration of utility model

Ref document number: 7499085

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150