Water heater flue with improved heat transfer

Details Water heater flue with improved heat transfer Water heater flue with improved heat transfer

2005-10-25

2005-10-25

Wilson, Gregory (Department: 3749)

Liquid heaters and vaporizers

Flue

Vertical

C122S018300

Reexamination Certificate

active

06957629

ABSTRACT:
A water tank has a central flue to which clips are welded. The clips define baffles and are welded to have a greater heat transfer area where they are joined to the central flue. The individual clips are rectangular and are welded to the flue wall along one side at an angle of 4° rather than the 9° of the prior art so that the clip has a greater weld area. This greater weld area increases the thermal path between the clip and the wall of the central flue.

REFERENCES:
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patent: 4761532 (1988-08-01), Bock
patent: 6354248 (2002-03-01), Bourke
patent: 6675746 (2004-01-01), Gerstmann et al.
“RESIDENTIAL The Invisible Luxury: Hot water on demand!”, Bock Water Heaters brochure, 4 pp.
“We call these our Unique Applications You'll call them one of the wisest investments you'll ever make. The Invisible Luxury: High-efficiency space- and water heating for your home”, Bock Water Heaters brochure, 4 pp.

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