Metal working – Means to assemble or disassemble – Heat exchanger
Patent
1996-05-30
1998-10-06
Cuda, I.
Metal working
Means to assemble or disassemble
Heat exchanger
29890042, B23P 1526
Patent
active
058159134
ABSTRACT:
A method of manufacturing a heat exchanger with a plurality of radiation fins which are stacked on a plurality of hairpin tubes or straight tubes includes the steps of clamping bent portions of the hairpin tubes or one ends of the straight tubes in such a manner as to arrest axial movement thereof by a clamp having at least one pair of clamping jaws, press fitting a plurality of mandrels respectively into openings of the hairpin tubes, or openings of the straight tubes which are opposite to the clamped ends to form expanded portions of a predetermined length, moving a plurality of grippers, each of which includes a plurality of gripping strips with their longitudinal axes coaxially aligned with the tubes, from a withdrawal position to an operative position in such a manner as to grip each of the expanded portions of the tubes, while maintaining a predetermined clearance between the adjacent gripping strips, and moving the mandrels within the tubes in such a manner as to expand the tubes through their entire lengths into tight, interlocked relationship with the radiation fins.
REFERENCES:
patent: 4766667 (1988-08-01), Gray
patent: 4839950 (1989-06-01), Stroup
patent: 5003691 (1991-04-01), Milliman et al.
patent: 5070608 (1991-12-01), Gray
patent: 5220727 (1993-06-01), Milliman et al.
patent: 5353496 (1994-10-01), Harman et al.
patent: 5533251 (1996-07-01), Vetter
patent: 5680695 (1997-10-01), Vetter
patent: 5687473 (1997-11-01), Tokura
Cuda I.
Kyoshin Kogyo Co. Ltd.
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