COMBUSTION EQUIPMENT FOR JUDGING ABNORMALITY OR LIFE

摘要

Combustion equipment which comprises a burner, a combustion fan for supplying air to and exhausting the burner, and an airflow sensor for detecting air volume flowing in an airflow passage leading to an exhaust passage from an air supply passage to the burner. In the equipment, an air volume judgement value providing a criterion of abnormality or life when the combustion fan is rotated at a predetermined number of revolutions is stored, a windless condition is detected when a variation in air volume detected by the airflow sensor with the combustion fan rotated at zero or a given number of revolutions is within a predetermined allowable range, and at that time abnormality or life is detected in the case where the air volume detected by the airflow sensor with the combustion fan rotated at the predetermined number of revolutions falls below the air volume judgement value. In this manner, whether a relationship between air volume and the number of revolutions of the combustion fan is favorable in a condition not influenced by outside wind can be properly judged to provide correct judgement of abnormality or life.