Fireplace augmented chimney heat exchange system

Details Fireplace augmented chimney heat exchange system Fireplace augmented chimney heat exchange system

2005-04-08

2009-02-10

Ciric, Ljiljana (Lil) V (Department: 3744)

Heat exchange

Structural installation

C165S048100, C165S124000, C165S901000, C237S00200B

Reexamination Certificate

active

07487821

ABSTRACT:
A heat pump circuit is installed into the inner cavity of a chimney venting the combustion gases of a burner servicing a dwelling with the exterior heat pump coil mounted in an annular gap formed around the upper chimney end. A fan driven by the chimney draft augmented by the burner then rotates an exterior rank of blade segments above the annular space to draw ambient air across the exterior coil. A set of gated apertures in the chimney wall both above and below the flue damper then directs zoned airflows up into the chimney and across the inner coil that is deployed at the lower interior chimney opening with the air heated in a chamber surrounding the burner either selectively routed into the chimney to further increase the chimney draft or routed into the dwelling for warmth.

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patent: 6434969 (2002-08-01), Sosnowski

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