Combustion appliance with a safety device

Details Combustion appliance with a safety device Combustion appliance with a safety device

1980-06-03

1982-11-09

Scott, Samuel

Combustion

Timer, programmer, retarder or condition responsive control

By combustion or combustion zone sensor

73 27R, 236 15E, F23N 524

Patent

active

043582656

ABSTRACT:
There is provided a combustion appliance with a safety device. An oxygen partial pressure sensor made up of a transition metal oxide or rare earth metal oxide is normally disposed in a position in which the excess air ratio downstream of a flame formed by a burner can be detected and, at times of abnormality, within the flame. The resistance change of said oxygen partial pressure is detected and the combustion is stopped when incomplete combustion occurs due to oxygen depression, clogging of the primary air orifice of the burner or clogging of the combustion chamber with the products of combustion.

REFERENCES:
patent: 3971344 (1976-07-01), Gouyou-Beauchamps
patent: 4032286 (1977-06-01), Kobayashi et al.
patent: 4125356 (1978-11-01), Ohashi et al.
patent: 4138881 (1979-02-01), Isenberg
patent: 4221557 (1980-09-01), Jalies
patent: 4234542 (1980-11-01), Romine
patent: 4249156 (1981-02-01), Micheli
"Combustion Sensor" National Technical Report vol. 24, No. 3, Jun. 1978 (Japan).

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