Gas burner regulating system
AssigneeHoneywell International Inc.
InventorsEnno Vrolijk, Tom Gerretsen
Life of this patent
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Abstract
The invention relates to a regulating system for a gas burner. Regulating systems for gas burners are used for guiding a gas flow and a combustion air flow to the burner. The gas flow can be regulated depending on combustion air pressure. Pressure is measured in known regulating devices with the aid of a membrane, that is pneumatically. The pneumatic pressure measurement limits the scope of application of known regulating devices. In the invention regulating device, a sensor (16) is arranged between a first line (10) guiding a gas flow and a second line (12) guiding the combustion air flow, an electric or electronic signal (19) being generated by the sensor that is used to regulate the gas valve (11).
Claims15
A regulating device for a gas burner system, the gas burner system including a first line through which a gas stream flows from a gas valve to a gas nozzle, and a second line through which a combustion air stream flows from a blower, the gas nozzle located downstream from the blower and a throttle point in the second line, the regulating device comprising, in combination:
- a first measuring point on the first line, the first measuring point positioned upstream from the gas nozzle;
- a second measuring point on the second line, the second measuring point positioned upstream of the throttle point;
- a sensor coupled to the first measuring point and the second measuring point, the sensor providing a signal indicating a pressure differential;
- and
- a control unit operative to provide a regulating signal to an actuating drive for controlling the gas valve.
A regulating device for a gas burner system, the gas burner system including a first line through which a gas stream flows from a gas valve to a gas nozzle, and a second line through which a combustion air stream flows from a blower, the gas nozzle located downstream from the blower and a throttle point in the second line, the regulating device comprising, in combination:
- a coupling line connected to the second line downstream of the throttle point and the first line upstream of the gas nozzle, the coupling line containing a first contraction and a second contraction, the first contraction controlling the amount of gas being supplied to the coupling line, the second contraction controlling the amount of air being supplied to the coupling line;
- a first measuring point on the coupling line, the first measuring point positioned between the first contraction and the second contraction;
- a second measuring point on the second line, the second measuring point positioned upstream of the throttle point;
- a sensor coupled to the first measuring point and the second measuring point, the sensor providing a signal indicating a pressure differential;
- and
- a control unit operative to provide a regulating signal to an actuating drive for controlling the gas valve.
A method for regulating a gas-air mixture to a gas burner system, the gas burner system including a first line through which a gas stream flows from a gas valve to a gas nozzle, and a second line through which a combustion air stream flows from a blower, the gas nozzle located downstream from the blower and a throttle point in the second line, comprising in combination:
- providing a signal indicating a differential pressure between the first line and the second line;
- and
- regulating an actuating drive based on the signal, thereby controlling the gas valve.
A method for regulating a gas-air mixture to a gas burner system, the gas burner system including a first line through which a gas stream flows from a gas valve to a gas nozzle and a second line through which a combustion air stream flows from a blower, the gas nozzle located downstream from the blower and a throttle point in the second line, the system further including a coupling line connected to the second line downstream of the throttle point and the first line upstream of the gas nozzle, the coupling line containing a first contraction and a second contraction, the method comprising in combination:
- providing a signal indicating a differential pressure between the second line and the coupling line;
- and
- regulating an actuating drive based on the signal, thereby controlling the gas valve.
Dependencies are inferred from the claim text.