GAS COOKING STOVE

PROBLEM TO BE SOLVED: To provide a gas cooking stove capable of securely detecting foreign matter being approaching a burner within a rage of a predetermined height above a top plate.SOLUTION: A working height of an optical sensor arranged at a distance from a burner is set to be larger than a working height of an optical sensor arranged closely to the burner. A working height of an optical sensor arranged in front of a cooking stove is set to be larger than a working height of an optical sensor arranged behind the cooking stove. A CPU acquires a measurement result of an optical sensor corresponding to a burner having been ignited (S5). When there is an optical sensor such that a measured height of foreign matter is a first working height or less which is less than a second working height (S7: YES), the CPU closes a solenoid valve to control a gas flow rate from a first flow rate or second flow rate to a third flow rate (S21). When there is an optical sensor such that a measured height of foreign matter is larger than the first working height and equal to or less than the second working height (S7: NO, S9: YES), the CPU closes a part of the solenoid valve to control the gas flow rate from the first flow rate to the second flow rate (S51).SELECTED DRAWING: Figure 8 【課題】天板の上方で所定の高さ以下の範囲においてバーナに近づく異物を確実に検出できるガスコンロを提供する。【解決手段】バーナから離れて配置される光センサの作動高さは、バーナの近くに配置される光センサの作動高さよりも高く設定される。コンロの前側に配置された光センサの作動高さは、コンロの後側に配置された光センサの作動高さよりも高く設定される。ＣＰＵは点火したバーナに対応する光センサの測定結果を取得する（Ｓ５）。異物の測定高さが第二作動高さより低い第一作動高さ以下を示す光センサがある場合（Ｓ７：ＹＥＳ）、ＣＰＵは電磁弁を閉鎖し、ガス流量を第１流量又は第２流量から第３流量に制御する（Ｓ２１）。異物の測定高さが第一作動高さより高く第二作動高さ以下を示す光センサがある場合（Ｓ７：ＮＯ、Ｓ９：ＹＥＳ）、ＣＰＵは電磁弁の一部を閉鎖し、ガス流量を第１流量から第２流量に制御する（Ｓ５１）。【選択図】図８