Solderless heat exchanger

Details Solderless heat exchanger Solderless heat exchanger

1980-09-16

1982-02-23

Richter, Sheldon J.

Heat exchange

Side-by-side tubular structures or tube sections

With manifold type header or header plate

291574, 29523, 285137R, 285192, 285222, F28F 916

Patent

active

043165036

ABSTRACT:
A solderless type heat exchanger having an upper and lower tanks, header plates closing the opposing opened ends of respective tanks, a plurality of tubes extending through the head plates to provide a communication between the upper and lower tanks, and a plurality of plate fins attached to the outside of the tubes, the tubes being joined to the header plates and plate fins solely by pressure contact therebetween provided through expansion of the tubes. The header plate is provided with a collared portion around each bore for receiving the corresponding tube and an annular groove is formed around the periphery of each collared portion. The annular groove provides a resiliency which ensures the rigid and stable joint between the tubes and the header plate achieved solely by the pressure contact through the expansion of the tube.

REFERENCES:
patent: 1137600 (1915-04-01), Gallagher
patent: 3349465 (1967-10-01), Pan et al.
patent: 3583478 (1971-06-01), Fieni
patent: 4159741 (1979-07-01), Nonnenmann et al.
patent: 4226280 (1980-10-01), Cenival et al.

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