Honeywell G.m.b.h.

Honeywell Technologies Sarl

Honeywell B.v.

Vaillant Gmbh

Albert Hietkamp

Piet Blaauwwiekel

Gerrit Jan Baarda

Frank Van Prooijen

Wim Munsterhuis

Gerwin Langius

Jochen Wriske

Matthias Wodke

In a modulating gas burner, the mixing ratio of a gas/air mixture is controlled over a modulation range of the gas burner by a pneumatic controller. During burner on phases, the combustion quality is monitored via a combustion quality sensor. The combustion quality is used to detect tolerances of the pneumatic controller and/or a potentially changing behavior of the pneumatic controller by checking if the combustion quality is inside or outside a defined combustion quality range. When the combustion quality is inside the defined combustion quality range, the mixing ratio of gas and air of the gas/air mixture is not changed. When the combustion quality is outside the defined combustion quality range, the mixing ratio of gas and air of the gas/air mixture is changed by adjusting a gas throttle to compensate for tolerances of the pneumatic controller and/or for a potentially changing behavior of the pneumatic controller.

Method for operating a gas burner

Device for gas burners

An electromechanical actuator-operated pressure regulator for supplying control pressure for a diaphragm-operated gas control valve, the actuator also operating an on-off control valve for the gas valve. A passageway including a pressure adjusting device for supplying a minimum gas valve output pressure extends from the downstream side of the on-off valve to the gas valve outlet.

Servo pressure regulator for a gas valve

Growing community of inventors

Emmen, Netherlands

Albert Hietkamp