F - Mech Eng,Light,Heat,Weapons – 23 – N
Patent
F - Mech Eng,Light,Heat,Weapons
23
N
F23N 5/00 (2006.01) F23N 1/02 (2006.01)
Patent
CA 2336494
Abstract: A process and apparatus for optimizing fuel combustion at various ambient atmospheric pressures in a gas-fired appliance having a combustion chamber. The gas- fired appliance has an air blower and is capable of delivering a variable flow of combustion air to the combustion chamber. This may be accomplished by varying the speed of the blower motor. Alternatively. the appliance combustion air intake or exhaust conduit may be throttled to vary the amount of combustion air delivered to the combustion chamber. An ambient atmospheric pressure sensor is provided to sense ambient atmospheric pressure and generates a signal representative of ambient atmospheric pressure to a microprocessor. Alternatively. a signal representative of ambient atmospheric pressure may be provided to the microprocessor by manual input. Based on this signal the microprocessor generates a control signal to the air blower to either increase or decrease the amount of combustion air delivered to the combustion chamber to provide optimal fuel combustion at the sensed ambient atmospheric pressure. Alternatively, the throttle may be used to vary the amount of combustion air delivered to the combustion chamber. Optionally, the microprocessor can be used to regulate the amount of fuel delivered to the combustion chamber in relation to the sensed ambient atmospheric pressure. Additional sensors to sense and provide signals to the microprocessor representative of ambient air temperature and blower exhaust air temperature may be provided to further optimize fuel combustion.
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