Automotive oil cooler

Details Automotive oil cooler Automotive oil cooler

1976-07-19

1978-05-02

Myhre, Charles J.

Heat exchange

Non-communicating coaxial enclosures

With communicating coaxial enclosure

165141, 165156, 165184, 184104B, F28D 710

Patent

active

040869598

ABSTRACT:
Submerged oil cooler for automotive vehicles requires only two pricipal parts but can provide more heat transfer at a lower pressure drop than conventional oil coolers which utilize three principal parts. In a preferred embodiment, an outer tube having a helically corrugated surface is hand press fit over an inner tube having an outer surface which is helically finned and has rows of longitudinal grooves formed in the fins. The tubes are sealed at their ends so as to define an extended annular flow channel for oil between the tubes, while permitting engine coolant in which the cooler is submerged to flow through the inner tube. In a modified arrangement, longitudinally milled slots are substituted for the formed grooves.

REFERENCES:
patent: 2870999 (1959-01-01), Soderstrom
patent: 3177936 (1965-04-01), Walter
patent: 3362058 (1968-01-01), Morris et al.
patent: 3643733 (1972-02-01), Hall et al.
patent: 3730229 (1973-05-01), D'Onofrio
patent: 3829285 (1974-08-01), Beck
patent: 3983932 (1976-10-01), Yamaguchi et al.

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