F - Mech Eng,Light,Heat,Weapons – 28 – F
Patent
F - Mech Eng,Light,Heat,Weapons
28
F
F28F 9/02 (2006.01) F25B 39/04 (2006.01) F28D 1/053 (2006.01)
Patent
CA 2131869
ABSTRACT OF THE DISCLOSURE: Restrictions on the major dimension of flattened tubes used in heat exchangers employing oval shaped, two piece headers/tank assemblies can be minimized in a construction including a plurality of flattened tubes (14) each having a minor dimension and a major dimension transverse thereto and extending in spaced parallel relation. Fins (16) are in heat exchange relation with the tubes (14) and a pair of spaced, parallel, elongated headers/tank assemblies (10, 12) are provided between which the tubes (14) extend. At least one of the headers/tank assemblies (10, 12) is a multiple piece header/tank assembly including a header piece (20) and a separate tank piece (22). The header piece (20) is elongated and provided with a plurality of slots (28) sized to receive ends of the tubes (14) with the tube major dimensions being generally transverse to the direction of elongation of the header piece (20). The header piece further includes a peripheral flange (24). The tank piece (22) is elongated, concave and has a peripheral flange (44) nested within the peripheral flange (22) of the header piece (20). The two are bonded together to form a unitary tubular structure and the peripheral flange (42) of the tank piece has alternating crests (52) and valleys (50) with the valleys (50) having a width greater than the tube minor dimension and being aligned with the tube ends. As a consequence, a flow to the tubes (14) is not obstructed by the peripheral flange (42) on the tank piece because of the valleys (50) therein.
Anderson Robert L.
Haasch James T.
Hughes Gregory G.
Kottal Peter C.
Saperstein Zalman P.
Cassan Maclean
Modine Manufacturing Company
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