Inverted lid sealing plate for heat exchanger

A stacked plate-type heat exchanger comprising:

• a plurality of heat exchanger plates sealably secured together to form a stack, each of the heat exchanger plates having a planar central portion and inlet and outlet passages for fluid passage, a plurality of fluid channels being defined between the planar central portions, some of the fluid channels being channels for a first fluid and some of the fluid channels being channels for a second fluid to facilitate heat exchange between the first and second fluids, at least a final heat exchanger plate in the stack having a peripheral flange projecting from the planar central portion thereof;
• and
• an end plate having an end plate central planar portion and a peripheral flange projecting from the end plate central planar portion, the peripheral flange of the end plate projecting in an opposite direction and sealably located within and secured to the peripheral flange of the final heat exchanger plate, a further fluid channel for one of the first and second fluids being located between the end plate and the final heat exchanger plate.

A heat exchanger including a first plate having a central planer portion and a peripheral flange projecting therefrom, a second plate having a central planar portion and a peripheral flange projecting therefrom, and a reinforcing plate secured to substantially an entire inner surface of the central planar portion of the second plate, an inner surface of the central planar portion of the first plate spaced apart from and opposing the reinforcing plate and the peripheral flange of the second plate projecting in an opposite direction than the peripheral flange of the first plate and having an outer surface that overlaps with an inner surface of the peripheral flange of the first plate, the overlapping surfaces being sealably joined together, a fluid flow channel having a flow inlet and a flow outlet being defined by the first and second plates and reinforcing plate.