PURPOSE: To simply and effectively conduct a reignition after a flame failure by inserting the photoreceiving part of the photoreceiver of a sensor case, in place, into a burner body, and mounting a light shielding member for generating a pseudo-flame failure signal at a photosensor.
CONSTITUTION: A light shielding member 30 is formed integrally with an inserting groove 31 for preventing invasion of a light by blocking a window hole 28 when the end of a sensor case 27 is inserted. If flame failure occurs at a burner due to certain reason such as the lack of fuel, etc., a photosensor 26 is taken out of a burner body 18, the end of the case 27 is inserted into the groove 31 of the member 30 to shield the invasion of the light to a photoreceiver 29. The burner is reignited by pressing the reset button of the body 18 while outputting a pseudo-flame failure signal from the photosensor 26. Thus, the reignition after the failure can be simply and accurately conducted.
DOI YOSHISANE
MAEDA MANABU
SAKAEDA MASAATSU
YAMAGISHI TADANORI
MATSUDA TAKASHI
FUKUMOTO MASAMI
TOKYO SANYO ELECTRIC CO
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