Method for attaching an air duct to a recuperator core

Details Method for attaching an air duct to a recuperator core Method for attaching an air duct to a recuperator core

2005-03-01

2005-03-01

Jimenez, Marc (Department: 3726)

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

C029S890030, C029S428000, C029S726000, C165S166000, C165S170000

Reexamination Certificate

active

06860011

ABSTRACT:
A method of attaching an air duct to a recuperator core may include welding a pair of butterpasses along a length of each of a plurality of core portions, connecting the plurality of core portions to one another to form the recuperator core and a pair of butterpasses extending along a length of the recuperator core, and attaching the air duct to the recuperator core along at least a portion of the pair of butterpasses. The method may also include controllably moving a welding torch into the air duct and along substantially the length of the recuperator core and controllably welding each butterpass to the air duct along substantially the length of the recuperator core without adding metal to the weld.

REFERENCES:
patent: 5555933 (1996-09-01), Darragh et al.
patent: 6158121 (2000-12-01), Ervin et al.
patent: 6267176 (2001-07-01), Bolla et al.

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