Combustion – Timer – programmer – retarder or condition responsive control – Sensor of first burner controls second burner – e.g. – pilot...
Patent
1996-07-05
1998-07-28
Jones, Larry
Combustion
Timer, programmer, retarder or condition responsive control
Sensor of first burner controls second burner, e.g., pilot...
431 46, 431 54, 431 58, 137 65, 251229, F23Q 908
Patent
active
057855110
ABSTRACT:
In this combustion gas control device, an electromechanical control is provided for automatically controlling the supply of the gas to the pilot burner when it is being ignited and subsequently to the main burner. The device has a main chamber, a pilot chamber and an outlet chamber. A spring-biassed valve is provided between the main chamber and the pilot chamber to close communication between the main chamber and pilot and outlet chambers. The spring-biassed valve is opened when a solenoid is actuated to allow gas from the main chamber to flow into the pilot chamber to the pilot outlet for lighting the pilot light. A diaphragm cover is provided between the pilot chamber and outlet chamber while the pilot is lighted to prevent gas from entering the outlet chamber. After the pilot has been lighted the spring-biassed valve is maintained opened by an electromagnetic mechanism while the solenoid is de-energized so as to open the diaphragm cover whereby gas flows to the pilot light as well as the outlet of the device to the burner.
REFERENCES:
patent: 4087231 (1978-05-01), Matthews
patent: 4111640 (1978-09-01), Scott
patent: 4346835 (1982-08-01), Trotter et al.
patent: 4413975 (1983-11-01), Turner et al.
patent: 4971095 (1990-11-01), Kelly et al.
Jones Larry
Wong David W.
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