Combustion – Timer – programmer – retarder or condition responsive control – Sensor of first burner controls second burner – e.g. – pilot...
Patent
1978-08-17
1981-08-25
Dority, Jr., Carroll B.
Combustion
Timer, programmer, retarder or condition responsive control
Sensor of first burner controls second burner, e.g., pilot...
F23Q 908
Patent
active
042856620
ABSTRACT:
There is disclosed a control system for a gas fired main and pilot burner assembly of an appliance. The assembly comprises first and second serially connected gas control valves for installation in the gas line to the main burner. A bypass conduit is provided downstream of the first control valve communicating with the pilot burner. A flame sensor such as a thermocouple is mounted adjacent the pilot burner for direct contact with the flame therefrom are included in the system. The valve members of each of the first and second control valves are resiliently biased closed and an independent latching mechanism is provided with each valve structure to hold its respective valve member open. The latching mechanism of each valve is operatively interconnected to the flame sensor so that the valve members are latched in the valve open positions when a flame is present at the pilot burner.
REFERENCES:
patent: 2478386 (1949-08-01), Gauger
patent: 2578194 (1951-12-01), Matthews
patent: 2889872 (1959-06-01), Suesserott
patent: 3108630 (1963-10-01), Forniti
patent: 3290178 (1966-12-01), Loveland
patent: 3508708 (1970-04-01), Caparone et al.
patent: 4073611 (1978-02-01), Kaduki et al.
patent: 4086048 (1978-04-01), Carlson
patent: 4145180 (1979-03-01), Bendorf
Graham Marvin M.
Katchka Jay R.
Dority Jr. Carroll B.
Robertshaw Controls Company
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