Draft Inducer Blower
AssigneeRegal Beloit America, Inc.
InventorSteven W. Post
Life of this patent
Estimating the term…
Abstract
A draft inducer blower assembly includes a blower having a fan, a dilution air intake passage, an exhaust gas intake passage, and a discharge passage. The blower is configured to operatively connect to a heater system in a manner to facilitate flow of combustion air into a combustion chamber and to draw dilution air into the blower and to mix the dilution air with the exhaust gases and to facilitate flow of the mixed air and exhaust gases through the vent. The dilution air intake passage is positionable in at least a low flow configuration and a high flow configuration. The dilution air intake passage is more restrictive of intake of dilution air in the low flow configuration than in the high flow configuration.
Claims31
A draft inducer blower assembly for use with a gas-fueled heater system having a combustion chamber and a vent, the blower assembly comprising:
- a blower, the blower having a fan, a dilution air intake passage, an exhaust gas intake passage, and a discharge passage, the dilution air intake passage being configured to be in fluid communication with dilution air, the exhaust gas intake passage being adapted to receive exhaust gasses from the combustion chamber, the discharge passage being configured to be in fluid communication with the vent;
- the blower being configured to operatively connect to the heater system in a manner such that the blower is configured to facilitate flow of combustion air into the combustion chamber and to draw dilution air into the blower and to mix the dilution air with the exhaust gasses and to facilitate flow of the mixed air and exhaust gases through the vent;
- and
- the dilution air intake passage being positionable in at least a low flow configuration and a high flow configuration, the dilution air intake passage being more restrictive of intake of dilution air in the low flow configuration than in the high flow configuration.
A method comprising:
- coupling a draft inducer blower assembly to a gas-fueled heater system, the gas-fueled heater system having a combustion chamber and a vent, the blower assembly comprising a blower, the blower having a fan, a dilution air intake passage, an exhaust gas intake passage, and a discharge passage, the dilution air intake passage being in fluid communication with dilution air, the exhaust gas intake passage being adapted to receive exhaust gasses from the combustion chamber, the discharge passage being in fluid communication with the vent, the blower being operatively connected to the heater system in a manner such that the blower is configured to facilitate flow of combustion air into the combustion chamber and to draw dilution air into the blower and to mix the dilution air with the exhaust gasses and to facilitate flow of the mixed air and exhaust gases through the vent, the dilution air intake passage capable of being in at least a low flow configuration and a high flow configuration, the dilution air intake passage being more restrictive of intake of dilution air in the low flow configuration than in the high flow configuration.
Dependencies are inferred from the claim text.