Heat Exchangers with Improved Heat Transfer Fin Insert

A heat exchanger for regulating the temperature of objects using a coolant, said heat exchanger comprising:

• a bottom plate having a first end, a second end opposite the first end, an outer surface, and an inner surface opposite the outer surface, said bottom plate comprising a first coolant port proximate the first end and a second coolant port proximate the second end;
• a top plate having a first end, a second end opposite the first end, an outer surface, and an inner surface opposite the outer surface, said top plate being sealedly engaged with the bottom plate for circulation of said coolant therethrough between said first and second coolant ports, in which the inner surface of said bottom plate and the inner surface of said top plate collectively defines a coolant chamber;
• and
• a substantially planar fin insert operably situated between said top and bottom plates within the coolant chamber, said fin insert having a first end positioned proximate the first coolant port and a second end positioned proximate the second coolant port, said fin insert comprising a plurality of fins extending longitudinally between the first and second ends of the fin insert, in which each fin includes:
• a pair of angled sidewalls that converge at one end and diverge at an opposite end;
• and
• a substantially flat outer wall that extends across the pair of angled sidewalls at the end where said angled sidewalls diverge,
• wherein the substantially flat outer wall comprises a contacting portion that is in immediate contact with said inner surface of at least one of the top and bottom plate.