US Patent 11415377 Two-stage fractal heat exchanger

A multiple-stage fractal heat exchanger includes two or more first fluid flow paths arranged adjacent to one another. Each first fluid flow path is defined by a main inlet channel on one side which diverges into two or more smaller channels to form a central first fluid flow path. In each of the two or more first fluid flow paths. The two or more smaller channels converge away from the central first fluid flow path into a main outlet channel on an opposite side of the first fluid flow path to the main inlet channel. The main outlet channel of each of the two or more first fluid flow paths is configured to be connected to the main inlet channel of an adjacent first fluid flow path.