Patent ID: 8157000

Claim:
A heat exchanger core which comprises: a) first and second groups of interleaved plates which are arranged respectively to carry first and second heat exchange fluids, the plates being bonded to one another and each of the plates in each group being formed in at least one of its faces with at least three platelets, each of which is composed of a group of parallel channels, each channel of which is formed in the first and second groups of plates to provide a tortuous path for the first and second heat exchange fluids, b) ports extending through the first and second groups of plates for conveying the first and second heat exchange fluids to and from the platelets, and c) a plurality of distribution channels connecting the group of channels at opposite ends of each platelet in each of the plates to associated ones of the ports in a manner such that a single group of the distribution channels connects only a single group of the channels to a single port at the end of each platelet, the distribution channels that are associated with each of the platelets in the plates of the first group being disposed in intersecting relationship with the distribution channels that are associated with respective ones of the platelets in the plates of the second group whereby each one of the platelets in the plates of the first group is located in heat exchange juxtaposition with a respective one of the platelets in the plates of the second group.