| 摘要 |
An improvement in safety devices for gas-consuming equipment, such as catalytic heaters, which include a pilot-burner with a metastable flame which displaces itself from its burner when the oxygen content of the ambient air drops below a predetermined limit, thus causing a detector to shut off or greatly reduce the gas supply to the gas-consuming equipment. The improvement comprises the addition of a chamber for ensuring through mixing of the combustible gas with the combustive air prior to combustion, and further including the use of a plurality of flames around the detector.
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