Heating systems – Combined radiator and boiler – Fluid fuel
Patent
1988-12-28
1990-06-26
Bennet, Henry A.
Heating systems
Combined radiator and boiler
Fluid fuel
237 1236, 126101, 126 99D, 122 20B, F24H 306
Patent
active
049365053
ABSTRACT:
An improved gas-fired heater for supplying heat to a space, such as a vehicle cab, and simultaneously, heat to the engine block for running the vehicle. A heat exchanger simultaneously heats a coolant which supplies heat to the engine block, and air to the vehicle cab. The gas-fired heater comprises an inner duct having opposite front and rear ends with a device at its front end for mixing and igniting a mixture of pressurized fuel and a combustion supporting gas that is discharged through an exhaust conduit from its rear end to an exhaust outlet located adjacent to its front end; an intermediate duct circumscribing the rear portion of the inner duct wherein the space between the inner and intermediate ducts receives a fluid to be heated; an outer duct surround the inner and intermediate duct and the exhaust conduit having opposite forward and rearward ends, respectively, located adjacent to the front and rear ends of the inner duct, and the outer duct having a fluid inlet opening proximate one of the opposite front and rear ends of the inner duct and a fluid outlet opening between the opposite front and rear ends of the inner duct; and a device for supplying a stream of pressurized fluid to the inlet opening of the outer duct for discharge through the outlet opening of the outer duct after having passed over the exteriors of and received heat from the inner and intermediate ducts.
REFERENCES:
patent: 4424934 (1984-01-01), Wilhoite
patent: 4706644 (1987-11-01), Nakai
Bennet Henry A.
Sollecito John
Winger Jon C.
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