Reinforced hydraulically expanded coil

Details Reinforced hydraulically expanded coil Reinforced hydraulically expanded coil

1993-05-12

1996-04-16

Leo, Leonard R.

Heat exchange

Expansion and contraction relieving or absorbing means

165 82, 1651341, 165169, 165906, F28F 700

Patent

active

055073395

ABSTRACT:
A reinforced hydraulically expanded flow channel (18) is disclosed which prevents the width of the hydraulically expanded flow channel (18) from changing. This reduces the strain rate in the high strain area next to the welds (16). After the hydraulic expansion process, the ends (20, 22) of the hydraulically expanded flow channel (18) are restrained by a rigid structure (24) such as a tubular member (28). When a tubular member (28) is employed, additional support is provided opposite the desired heat transfer surface (26).

REFERENCES:
patent: 1804624 (1931-05-01), King
patent: 1990738 (1935-02-01), La Porte
patent: 2049708 (1936-08-01), Lieb
patent: 2835961 (1958-05-01), Neel et al.
patent: 2995807 (1961-08-01), Gibbs
patent: 2999308 (1961-09-01), Pauls
patent: 3335789 (1967-08-01), Raskin
patent: 3831246 (1974-08-01), Morris
patent: 4282861 (1981-08-01), Roark
patent: 4295255 (1981-10-01), Weber
patent: 5070607 (1991-12-01), Boardman et al.
patent: 5138765 (1992-08-01), Watson et al.
patent: 5221045 (1993-06-01), McAninch et al.

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