Heat exchange furnace with serpentine gas flow path disposed...

Heating – Heat generator heats gas or liquid material in a flow structure

Reexamination Certificate

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C432S223000, C126S09900D, C165S157000

Reexamination Certificate

active

07393206

ABSTRACT:
A heat exchange furnace includes a surrounding wall disposed around a combustion furnace unit so as to define an annular heat exchange space therebetween. Upright buffer plates divide the heat exchange space into a plurality of air chambers communicated with each other. Upper and lower gas-guiding members are connected respectively and fixedly to upper and lower ends of the surrounding wall. Conduit sets are disposed within the heat exchange space, and cooperate with the upper and lower gas-guiding members so as to constitute cooperatively at least one serpentine gas flow path disposed within the heat exchange space.

REFERENCES:
patent: 2357831 (1944-09-01), Judy
patent: 3796547 (1974-03-01), Muenger
patent: 4093022 (1978-06-01), Polyak, Jr.
patent: 4319557 (1982-03-01), Sietmann et al.
patent: 4449510 (1984-05-01), Sukup
patent: 4579102 (1986-04-01), Sukup
patent: 4646820 (1987-03-01), Brightbill et al.
patent: 5205276 (1993-04-01), Aronov et al.
patent: 2004/0031600 (2004-02-01), Kontu
patent: 2007/0169924 (2007-07-01), Bussonnet

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