Abstract: A communication plate extends along and is sandwiched between cylindrical communication manifolds of a first heat exchanger assembly and a second heat exchanger assembly. The communication plate includes a saddling surface arcuate in one direction and a saddling surface arcuate in the opposite direction for engaging in saddle-like fashion the cylindrical shape of the manifolds. The communication plate defines a plurality of communication plate orifices disposed along the communication plate and aligned co-axial with a plurality of communication orifices disposed along the manifolds to seal the communication orifices of the manifolds and establish distributed and sealed fluid communication between the heat exchanger assemblies.

Abstract: A communication plate extends along and is sandwiched between cylindrical communication manifolds of a first heat exchanger assembly and a second heat exchanger assembly. The communication plate includes a saddling surface arcuate in one direction and a saddling surface arcuate in the opposite direction for engaging in saddle-like fashion the cylindrical shape of the manifolds. The communication plate defines a plurality of communication plate orifices disposed along the communication plate and aligned co-axial with a plurality of communication orifices disposed along the manifolds to seal the communication orifices of the manifolds and establish distributed and sealed fluid communication between the heat exchanger assemblies.

Abstract: A communication plate extends along and is sandwiched between cylindrical communication manifolds of a first heat exchanger assembly and a second heat exchanger assembly. The communication plate includes a saddling surface arcuate in one direction and a saddling surface arcuate in the opposite direction for engaging in saddle-like fashion the cylindrical shape of the manifolds. The communication plate defines a plurality of communication plate orifices disposed along the communication plate and aligned co-axial with a plurality of communication orifices disposed along the manifolds to seal the communication orifices of the manifolds and establish distributed and sealed fluid communication between the heat exchanger assemblies.

Abstract: A communication plate extends along and is sandwiched between cylindrical communication manifolds of a first heat exchanger assembly and a second heat exchanger assembly. The communication plate includes a saddling surface arcuate in one direction and a saddling surface arcuate in the opposite direction for engaging in saddle-like fashion the cylindrical shape of the manifolds. The communication plate defines a plurality of communication plate orifices disposed along the communication plate and aligned co-axial with a plurality of communication orifices disposed along the manifolds to seal the communication orifices of the manifolds and establish distributed and sealed fluid communication between the heat exchanger assemblies.

Abstract: A communication plate extends along and is sandwiched between cylindrical communication manifolds of a first heat exchanger assembly and a second heat exchanger assembly. The communication plate includes a saddling surface arcuate in one direction and a saddling surface arcuate in the opposite direction for engaging in saddle-like fashion the cylindrical shape of the manifolds. The communication plate defines a plurality of communication plate orifices disposed along the communication plate and aligned co-axial with a plurality of communication orifices disposed along the manifolds to seal the communication orifices of the manifolds and establish distributed and sealed fluid communication between the heat exchanger assemblies.

Abstract: A coupling of a heat exchanger includes a saddle for engaging a cylindrical manifold. The saddle has an arcuate cross-section extending between a first edge and a second edge. The saddle defines an opening and a tubular member extends through the saddle and between a top edge and a bottom edge. A lip extends outward from the top edge and a skirt interconnects the lip to the opening in the saddle. The tubular member is oblong-shaped adjacent the opening of the saddle and the tubular member has an oblong-shaped portion extending from the bottom edge to adjacent the opening in the saddle and terminating at a transition zone. The tubular member has a circular-shaped portion extending from the transition zone to the top edge. The oblong-shaped portion has a shorter dimension in the direction between the first and second edges than the circular shaped portion.

Abstract: A coupling of a heat exchanger includes a saddle for engaging a cylindrical manifold. The saddle has an arcuate cross-section extending between a first edge and a second edge. The saddle defines an opening and a tubular member extends through the saddle and between a top edge and a bottom edge. A lip extends outward from the top edge and a skirt interconnects the lip to the opening in the saddle. The tubular member is oblong-shaped adjacent the opening of the saddle and the tubular member has an oblong-shaped portion extending from the bottom edge to adjacent the opening in the saddle and terminating at a transition zone. The tubular member has a circular-shaped portion extending from the transition zone to the top edge. The oblong-shaped portion has a shorter dimension in the direction between the first and second edges than the circular shaped portion.

Abstract: A communication plate extends along and is sandwiched between cylindrical communication manifolds of a first heat exchanger assembly and a second heat exchanger assembly. The communication plate includes a saddling surface arcuate in one direction and a saddling surface arcuate in the opposite direction for engaging in saddle-like fashion the cylindrical shape of the manifolds. The communication plate defines a plurality of communication plate orifices disposed along the communication plate and aligned co-axial with a plurality of communication orifices disposed along the manifolds to seal the communication orifices of the manifolds and establish distributed and sealed fluid communication between the heat exchanger assemblies.

Abstract: A manifold having multiple chambers for use in a cross-counterflow heat exchanger assembly includes a first member having arms extending from a base to arm ends. A second member is secured to the first member to define the manifold. The second member includes an inner plate edge that defines a first mating surface that extends inwardly along the inner plate edge from each of the plate ends to mate with arm ends. A wall extends transversely to the inner plate edge to a wall end. The wall end mates with an inner base surface to divide the interior of the manifold into a plurality of chambers. At least one lip extends transversely to the inner plate edge to define a second mating surface that extends perpendicularly from the first mating surface and mates with an inner arm surface of the arms.

Abstract: A manifold for use in a heat exchanger assembly and a method of forming the manifold is disclosed herein. The method starts with the step of separately forming a first member at least partially defining an interior and having a spaced set of first tube slots and a second member having a wall positioned against the first tube slots and dividing the interior into a plurality of chambers. The method is finalized with the step of permanently fixing the first member to the second member to define an first manifold after the separately forming step.

Abstract: A multi tube evaporator with tubes having elongated side passages interconnected by an end crossover passage. The tube has oblong internal bumps in the side passages that have a low angle with the normal and partly spherical bumps in the crossover passage arranged so that heat transfer between the air passing past the tubes and the refrigerant passing through the tubes is by conduction through the walls of the tubes and the boundary layer of refrigerant moving along the inner walls of the tube and by forced convection of heat energy between the boundary layer and the main flow of refrigerant flowing therethrough. The low angle bumps in the side passages provide the least amount of drag of the refrigerant while effectively reducing the thickness of the boundary layer thereof to reduce its insular effect. The spherical bumps in the crossover are insensitive to the direction of flow and help provide a low pressure drop for effectively increasing efficiency of the evaporator.