Thin sheet heat exchanger

A heat exchanger comprising, in combination:

• an enclosing frame,
• said enclosing frame having an inlet and outlet for a first fluid and an inlet and outlet for a second fluid, said enclosing frame being connectable to outside duct work,
• a heat exchange plate packing, said heat exchange plate packing being comprised of at least one stack of heat exchange plates and at least one means for terminating said stack,
• each said stack of heat exchange plates being comprised of a plurality of about 90.degree. alternately disposed heat exchange plates,
• each said heat exchange plate being a plane surface rectangle having a pair of opposing sides folded so as to form by each said heat exchange plate gasket sealing surfaces and a fluid flow channel,
• said gasket sealing surfaces being exposed to said enclosing frame,
• each said folded side of each said heat exchange plate being formed of a first and second cut and a first and second fold, said first fold being a forward approximately 90.degree. fold and being parallel to the edge of the said folded side and extending the breadth of the said heat exchange plate, said second fold being a backward approximately 90.degree. fold and being parallel to the said first fold and extending between said first and second cuts,
• each said heat exchange plate containing in its said fluid flow channel a plurality of reinforcement strips,
• each said heat exchange plate having said opposing folded sides sealingly joined to the said opposing unfolded sides of the next alternately disposed heat exchange plate in a stack of heat exchange plates,
• a sealing gasket,
• said sealing gasket being positioned between and securedly held by the said gasket sealing surfaces and the said enclosing frame,
• a means to sealingly join said heat exchange plate to the next said alternately disposed heat exchange plate in a stack of heat exchange plates,
• a means to attach said reinforcement strips to said heat exchange plates,
• a means to sealingly join said at least one stack of heat exchange plates to said terminating means,
• a means to securedly attach said enclosing frame to said heat exchange plate packing.

A heat exchange system comprising in combination, at least one heat exchanger, said heat exchanger comprising, in combination:

• an enclosing frame,
• said enclosing frame having an inlet and outlet for a first fluid and an inlet and outlet for a second fluid,
• said enclosing frame being connectable to outside duct work,
• a heat exchange plate packing,
• said heat exchange plate packing being comprised of at least one stack of heat exchange plates and at least one means for terminating said stack,
• each said stack of heat exchange plates being comprised of a plurality of about 90.degree. alternately disposed heat exchange plates,
• each said heat exchange plate being a plane surface rectangle having a pair of opposing sides folded so as to form by each said heat exchange plate gasket sealing surfaces and a fluid flow channel,
• said gasket sealing surfaces being exposed to said enclosing frame,
• each said folded side of each said heat exchange plate being formed of a first and second cut and a first and second fold, said first fold being a forward approximately 90.degree. fold and being parallel to the edge of the said folded side and extending the breadth of the said heat exchange plate, said second fold being a backward approximately 90.degree. fold and being parallel to the said first fold and extending between said first and second cuts,
• each said heat exchange plate containing in its said fluid flow channel a plurality of reinforcement strips,
• each said heat exchange plate having said opposing folded sides sealingly joined to the said opposing unfolded sides of the next alternately disposed heat exchanger plate in a stack of heat exchange plates,
• a sealing gasket,
• said sealing gasket being positioned between and securedly held by the said gasket sealing surfaces and the said enclosing frame,
• a means to sealingly join said heat exchange plate to the next said alternately disposed heat exchange plate in a stack of heat exchange plates,
• a means to attach said reinforcement strips to said heat exchange plates,
• a means to sealingly join said at least one stack of heat exchange plates to said terminating means,
• a means to securedly attach said enclosing frame to said heat exchange plate packing.