Two fluid heat exchanger

Details Two fluid heat exchanger Two fluid heat exchanger

1978-06-22

1980-11-18

Davis, Albert W.

Heat exchange

Flow passages for two confined fluids

123570, 165 51, F28F 312

Patent

active

042340403

ABSTRACT:
A two fluid heat exchanger adapted for utilization in an exhaust gas recirculation system of an automotive internal combustion engine to reduce the temperature level of the exhaust gas from the combustion cycle that is metered from the exhaust manifold and recycled through the combustion cycle. The heat exchanger has a generally flat configuration with a first pair of flanged dished plates forming an inner chamber and a second pair of flanged dished plates encompassing the first pair of plates to form a fluid envelope around the inner chamber. The flanges of the pairs of plates are joined together with a spacing between the walls of the pairs of plates at the opposite ends with the inner flanges having openings therethrough to communicate between the upper and lower portions of the envelope. The upper plate of the second pair has an inlet opening and an outlet opening for one fluid and a central indentation between the openings to provide a flow pattern around the inner chamber, and a second fluid inlet and outlet communicate with the inner chamber.

REFERENCES:
patent: 2343315 (1944-03-01), Morrison
patent: 2977940 (1961-04-01), Theriault
patent: 3399720 (1968-09-01), Doelz et al.

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