Jet impingement plate fin heat exchanger

A two-media laminated jet impingement heat exchanger comprising a heat exchanger core including a plurality of solid heat exchanger plates, a plurality of corrugated heat exchanger plates respectively interposed between and secured to adjacent solid heat exchanger plates so as to define between adjacent heat exchanger plates separate channels for respectively accommodating the two media, said channels being arranged in the heat exchanger core such that the flows of the respective medium through the heat exchanger core alternate, each of said corrugated heat exchanger plates including a plurality of surface portions extending substantially parallel to one another, at least two rows of orifice means provided in the surface portions of the corrugated heat exchanger plates associated with one medium of the two media for enabling a flow of said one medium therethrough, at least one row of orifice means provided in the surface portions of the corrugated heat exchanger plates associated with the other medium of the two media for enabling a flow of said other media therethrough, and wherein said at least two rows of orifice means in said surface portions of the corrugated heat exchanger plates associated with said one medium are offset with respect to corresponding rows in adjacent surface portions such that said one medium flows through the orifice means of said at least two rows of orifice means and impinges on adjacent surface portions of the corrugated heat exchanger plates thereby defining a tortuous flow path for said one medium through the respective channels of the heat exchanger core.