Apparatus for assembling fin plate heat exchangers

Details Apparatus for assembling fin plate heat exchangers Apparatus for assembling fin plate heat exchangers

1984-04-30

1986-04-29

Hall, Carl E.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291574, 29727, 29523, B23P 1526

Patent

active

045847517

ABSTRACT:
A method and apparatus for automatically assembling hairpin tubes in the tube receiving holes of a fin pack unit. Pre-assembled fin pack units are serially moved from one station to the next to receive hairpin tubes, to have bells formed in the open ends of the laced hairpin tubes, to have expansion tools inserted upwardly through the open ends of the hairpin tubes to expand the walls of the tubes outwardly into contact against the fin plates and tube sheets with sufficient force to lock the tubes into the unit, and to have return bends interconnect the bell-like seats of adjacent hairpin tubes and thus complete the heat exchanger flow circuit.

REFERENCES:
patent: 3437133 (1969-04-01), Bullard
patent: 3487523 (1970-01-01), Ames
patent: 3688533 (1972-09-01), Ames
patent: 3824668 (1974-07-01), Wightman
patent: 4195540 (1980-04-01), Franks
patent: 4228573 (1980-10-01), Barnard
patent: 4286486 (1981-09-01), Franks
patent: 4321739 (1982-03-01), Martin et al.
patent: 4459917 (1984-07-01), Michael et al.

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