SERVO GAS SYSTEM, GAS BURNER AND METHOD FOR OPERATING THE GAS BURNER

摘要

Servo gas system (11) for a gas burner (10), namely for controlling a pressure regulation valve (20) positioned in a gas duct (18) of the gas burner, thereby controlling a gas pressure within the gas duct (18) being present downstream of the pressure regulation valve (20) and thereby controlling a pressure difference between a pressure in a burner chamber (12) of the gas burner and said gas pressure within the gas duct (18), the servo gas system (11) comprising a static servo gas flow branch (28) and a dynamic servo gas flow branch (29) being connected in parallel, and a flow sensing element (30) being connected between the static servo gas flow branch (28) and the dynamic servo gas flow branch (29) and providing a signal used to control the pressure regulation valve (20) by an electric actuator (41).

主权项

1. A servo gas system for a gas burner, namely for controlling a pressure regulation valve positioned in a gas duct of the gas burner, thereby controlling a gas pressure within the gas duct being present downstream of the pressure regulation valve and thereby controlling a pressure difference between a pressure in a burner chamber of the gas burner and the gas pressure within the gas duct, the servo gas system comprising:
a static servo gas flow branch and a dynamic servo gas flow branch connected in parallel and fluidly extending from the gas duct of the gas burner downstream of the pressure regulation valve, the dynamic servo gas flow branch having a pressure regulator for regulating a pressure in the dynamic servo gas flow branch downstream of the pressure regulator; a flow sensing element for sensing a flow between the static servo gas flow branch and the dynamic servo gas flow branch, the flow sensing element in fluid communication with the dynamic servo gas flow branch downstream of the pressure regulator; and a controller operatively coupled to the flow sensing element and an electric actuator of the pressure regulation valve of the gas duct, wherein the controller is configured to provide a control signal to the electric actuator for controlling the pressure regulation valve of the gas duct based, at least in part, on the flow sensed by the flow sensing element.