Open solenoid valve with arc relighter, method to augment flame safeguard
AssigneeOil, Gas and Industrial Process Equipment, Inc.
InventorsScott Cook, Jose Pereira
Life of this patent
Estimating the term…
Abstract
The invention provides a pilot light ignition system comprising a solenoid valve and a flame safeguard controller. Also provided is a pilot light ignition process comprising a normally open solenoid valve that shuts down a main burner gas supply while the pilot is being lit. A fail last position solenoid can also be utilized with the system.
Claims13
A continuous pilot light ignition system incorporating a means to cut off fuel flow to a main burner upon detection of an extinguished pilot light and until a pilot system is relit, said fuel flow remaining cutoff while a flame safeguard component is in the process of cutting off fuel flow to a pilot assembly and the main burner wherein said means to cut off fuel is not energized during fuel flow and requires energy only to close.
A pilot light ignition system incorporating a means to cut off fuel flow to a main burner while a pilot system is being relit, said fuel flow remaining cutoff while a flame safeguard component is in the process of cutting off fuel flow to a pilot assembly and the main burner, wherein the fuel cut off means comprises a fail last position solenoid valve that shuts down when system is being lit and opens after a predetermined time and the flame safeguard component ultimately closes to shut down fuel gas flow to a pilot light and main burner when required parameters are not satisfied.
A pilot light ignition system comprising:
- a) a flame safe guard operably connected to a fail last position solenoid valve;
- and
- b) a pressure switch to detect if the flame safe guard is on before energizing a solenoid valve, thereby opening a main valve supplying fuel gas to a main burner, wherein the pressure switch provides a signal to de-energize a normally open solenoid valve, thereby opening a main valve for supplying fuel gas to a main burner.
A pilot light ignition system comprising:
- a) a flame safe guard operably connected to a fail last position solenoid valve;
- and
- b) a pressure switch to detect if the flame safe guard is on before energizing a solenoid valve, thereby opening a main valve supplying fuel gas to a main burner, wherein if the system detects that the FSG is turned off, then that will signal opening of the fail last position solenoid valve.
A pilot light ignition system comprising:
- a) a flame safe guard operably connected to a fail last position solenoid valve;
- and
- b) a pressure switch to detect if the flame safe guard is on before energizing a solenoid valve, thereby opening a main valve supplying fuel gas to a main burner, wherein if the pressure switch detects that the flame safe guard is turned off, then current is removed from the normally open solenoid to allow a main fuel gas valve to open.
Dependencies are inferred from the claim text.