SAFETY APPARATUS PROTECTIVE AGAINST OXYGEN DEFICIENCY

摘要

PURPOSE:To secure safety when oxygen is deficient by interrupting gas in detection of flame changes in such a way that a small output burner formed with a primary flame port and a secondary flame port which are put at an interval to each other is arranted in a case having an air feeding port and an exhaust port. CONSTITUTION:In concurrence of providing a small output detecting burner 20 in a case having an air feeding port at the lower part and an exhaust port at the upper part with providing a thermocouple 35 between a primary flame port 30 situated at the upper extremity of an inner cylinder 29 of the detecting burner 20 and a secondary flame port 33 situated at the upper extremity of an outer cylinder 34, opening condition of a valve body 25 is maintained by exciting an electromagnet 26 of a safety valve 14 with its output. When oxygen is deficient, drop of output through the thermocouple closes a valve body. Opening operation of the valve body 25 is performed by an axle 15.