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A highly efficient parallel flow evaporator is provided by combining a pair of identical units (10), (12) wherein each includes a pair of identical, parallel, spaced headers (40) each having slots (44) receiving the ends of identical flattened tubes (22). Identical tanks (42) are bonded to each of t

A highly efficient parallel flow evaporator is provided by combining a pair of identical units (10), (12) wherein each includes a pair of identical, parallel, spaced headers (40) each having slots (44) receiving the ends of identical flattened tubes (22). Identical tanks (42) are bonded to each of the headers (40) and each has an identical central flat surface (52) and an identical, centrally located port (60). Fins (26) extend between adjacent tubes (22) in each unit (10), (12) and an inlet/outlet fixture (32) is bonded to the flat surfaces (52) of one pair of tanks (42) defined by adjacent tanks (42) of both of the units (10),(12). A cross-over fixture (30) is bonded to the flat surfaces (52) of the other pair of tanks (42) defined by the remaining tanks (42) of both of the units (10),(12). The invention minimizes the number of geometrically different parts, provides an improved distributor (140) for refrigerant, provides an improved inlet passage (108) that provides a uniform stream of refrigerant to the distributor (140) and provides for the direction of refrigerant emanating from the cross-over fixture (30) in a direction parallel to the tubes (22) for improved uniformity.

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A parallel flow evaporator comprising: a pair of identical heat exchange units; each unit including a pair of identical, parallel spaced header and tank constructions, each having slots in one side thereof with the slots in one being aligned with the slots in the other; and a plurality of identical,

A parallel flow evaporator comprising: a pair of identical heat exchange units; each unit including a pair of identical, parallel spaced header and tank constructions, each having slots in one side thereof with the slots in one being aligned with the slots in the other; and a plurality of identical, flattened tubes extending in parallel between said header and tank constructions and having their ends received in aligned ones of the slots and bonded to the header and tank constructions of the corresponding unit; said header and tank constructions each having an identical, generally central flat surface on a side thereof remote from said slots, and identical, generally centrally located ports in said flat surfaces, said units being disposed in side by side relation with corresponding header and tank constructions being in contacting or almost contacting relation; fins extending between adjacent tubes in said units; an inlet/outlet fixture bonded to the flat surfaces of one pair of header and tank constructions defined by adjacent header and tank constructions of both said units and having an inlet port in fluid communication with one of said identical ports in said one pair of header and tank constructions and an outlet port in fluid communication with the other of said identical ports in said one pair of header and tank constructions; and a cross-over fixture bonded to flat surfaces of the other pair of header and tank constructions defined by the remaining header and tank constructions of both said units, and having a first port in fluid communication with one of the identical ports in said other pair, a second port in fluid communication with the other of the identical ports in said other pair, and a fluid passage interconnecting said first and second ports.