Dual drainage slope recuperative heat exchanger assembly for fue

Details Dual drainage slope recuperative heat exchanger assembly for fue Dual drainage slope recuperative heat exchanger assembly for fue

1994-02-03

1994-09-20

Yeung, James C.

Stoves and furnaces

Hot-air furnaces

Compressed air

126116R, 165137, 165913, F24H 302

Patent

active

053479807

ABSTRACT:
A fuel-fired forced air condensing furnace has installed therein a recuperative heat exchanger assembly with a primary heat exchange section operative, during furnace operation, to transfer sensible combustion gas heat to air being flowed through the furnace, and a secondary heat exchange section operative to transfer latent combustion gas heat to the air. The secondary heat exchange section includes a finned tube heat exchanger structure extending between spaced apart combustion gas inlet and outlet collector boxes. The finned tube heat exchanger structure is canted in two perpendicular directions relative to the collector boxes in a manner such that combustion gas condensate formed in the secondary heat exchange section during furnace operation will drain into the outlet collector box, and outwardly through a condensate outlet fitting therein, with the heat exchanger in either a vertical air flow orientation or a horizontal air flow orientation in which the assembly has been rotated ninety degrees relative to its vertical air flow orientation about a horizontal axis parallel to the separation direction of the inlet and outlet collector boxes.

REFERENCES:
patent: 4164210 (1979-08-01), Hollowell
patent: 4478158 (1984-10-01), Smith
patent: 4478206 (1984-10-01), Ahn
patent: 4515145 (1985-05-01), Tallman et al.
patent: 4557249 (1985-10-01), Sweedyk
patent: 4561421 (1985-12-01), Hwang et al.
patent: 4603681 (1986-08-01), Clawson
patent: 4653466 (1987-03-01), DeHaan et al.
patent: 4960102 (1990-10-01), Shellenberger
patent: 5097819 (1992-03-01), Talbert et al.

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