Heater

Details Heater Heater

1995-05-24

1999-11-09

Price, Carl D.

Stoves and furnaces

Hot-air furnaces

Liquid or gaseous fuel

126110R, 126 99R, F24H 302

Patent

active

059794330

ABSTRACT:
A heater for heating a stream of air has a burner assembly to heat the stream as it flows along a flow path and a primary heat assembly positioned in the flow path and coupled to the burner assembly for conducting gaseous combustion products. The primary heat exchange assembly has an array of U-shaped heat exchange tubes for conducting hot combustion products generated by the burner assembly to an array of second U-shaped heat exchange tubes for combustion products discharged from the first heat exchange tubes, the second tube having a smaller diameter than the first and being positioned in the space defined by the array of first U-shaped heat exchange tubes. Combustion products leaving the primary heat exchange assembly are passed through a secondary heat exchange assembly before being exhausted.

REFERENCES:
patent: 1842701 (1932-01-01), Vedrinsky
patent: 2582066 (1952-01-01), Resek
patent: 3563212 (1971-02-01), Hoagland
patent: 4751910 (1988-06-01), Allen et al.
patent: 5097819 (1992-03-01), Talbert et al.
patent: 5165386 (1992-11-01), Van Der Veen

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