Two row bent evaporator

Abstract

A core ( 26 ) extends through a circular bend ( 28 ) greater than 180 degrees to define a first leg ( 30 ) between the bend ( 28 ) and an inlet manifold ( 22 ) and a second leg ( 32 ) between the bend ( 28 ) and an outlet manifold ( 24 ). The legs ( 30, 32 ) are disposed in converging relationship from the bend ( 28 ) towards the manifolds ( 22, 24 ) to define an acute angle (α) between the legs ( 30, 32 ). The manifolds ( 22, 24 ) are aligned in juxtaposed relationship along an alignment axis (Y) and the legs ( 30, 32 ) are disposed in angular relationship to a reference axis (X) to define first and second drainage angles (Θ 1 , Θ 2 ) between the corresponding legs ( 30, 32 ) and the reference axis (X). The second drainage angle (Θ 2 ) is >10 degrees and the first drainage angle is (Θ 1 )>20 degrees and the acute angle (α) is >10 degrees for draining condensate along the legs ( 30, 32 ) toward the juxtaposed manifolds ( 22, 24 ) to establish a common drainage point of the condensate.

1 . A heat exchanger assembly comprising;
 an inlet manifold and an outlet manifold,   a core extending between said manifolds for conveying a working fluid from said inlet manifold to said outlet manifold,   said core extending through a bend to define a first leg between said bend and said inlet manifold and a second leg between said bend and said outlet manifold, and   said bend extending through a circular bend greater than 180 degrees for disposing said legs in converging relationship from said bend towards said manifolds to define an acute angle α between said legs.   
     
     
         2 . An assembly as set forth in  claim 1  wherein said inlet and outlet manifolds are aligned on an alignment axis Y for receiving the flow of air in a transverse direction successively through said second leg and said first leg. 
     
     
         3 . An assembly as set forth in  claim 2  wherein said first and second legs are disposed in angular relationship to a reference axis X extending perpendicular to said alignment axis Y to define a first drainage angle Θ 1  between said first leg and said reference axis X and a second drainage angle Θ 2  between said second leg and reference axis X and said acute angle α is equal to the difference between said drainage angles (Θ 2 -Θ 1 ) for draining condensate along said legs toward said manifolds. 
     
     
         4 . An assembly as set forth in  claim 3  wherein said first leg has a first length L 1  between said bend and said inlet manifold and said second leg has a second length L 2  between said bend and said outlet manifold and said first length L 1  is less than said second length L 2  for aligning said manifolds in juxtaposed relationship along said alignment axis Y for establishing a common draining point of said condensate at said juxtaposed manifolds. 
     
     
         5 . An assembly as set forth in  claim 4  wherein said second drainage angle Θ 2  is equal to or greater than 10 degrees and said first drainage angle Θ 1  is equal to or greater than 20 degrees and said acute angle α is equal to or greater than 10 degrees. 
     
     
         6 . A heat exchanger assembly comprising;
 an inlet manifold and an outlet manifold being cylindrical and extending in spaced and parallel relationship to one another,   a core extending between said manifolds for conveying a working fluid from said inlet manifold to said outlet manifold,   said core including a plurality of tubes extending in spaced and parallel relationship to one another between said manifolds,   said core including a plurality of air fins extending back and forth between adjacent ones of said tubes to present a serpentine pattern extending between said adjacent tubes,   said inlet manifold defining an inlet port for receiving the working fluid,   said outlet manifold defining an outlet port for dispensing the working fluid,   said core extending through a bend to define a first leg having a first length L 1  between said bend and said inlet manifold and a second leg having a second length L 2  between said bend and said outlet manifold,   said first and second manifolds being aligned on an alignment axis Y for receiving the flow of air in a transverse direction successively through said second leg and said first leg,   said first and second legs being disposed in angular relationship to a reference axis X extending perpendicular to said alignment axis Y to define a first drainage angle Θ 1  between said first leg and said reference axis X and a second drainage angle Θ 2  between said second leg and said reference axis X, and   said bend extending through a circular bend greater than 180 degrees for disposing said legs in converging relationship from said bend towards said manifolds to define an acute angle α between said legs equal to the difference between said drainage angles (Θ 2 -Θ 1 ),   said first length L 1  of said first leg being less than said second length L 2  of said second leg for aligning said manifolds in juxtaposed relationship along said alignment axis Y for establishing a common draining point of said condensate at said juxtaposed manifolds,   said second drainage angle Θ 2  being equal to or greater than 10 degrees and said first drainage angle Θ 1  being equal to or greater than 20 degrees and said acute angle α being equal to or greater than 10 degrees for draining condensate along said tubes toward said manifolds.