Heat exchanger with parallel flowing fluids

A manifold for the transfer or distribution of two fluids, said manifold comprising:

• a pair of manifold plates consisting of face-to-face, mating ringlike plates each having inner and outer peripheral flanges, substantially annular inner and outer bosses projecting in the same direction from a first plane defined by said outer peripheral flange, and a substantially annular intermediate channel located between the inner and outer bosses and having openings for passage of a first fluid between the two intermediate channels;
• at least one of said intermediate channels having radial ribs formed about the circumference of the channel and extending substantially across the channel, said radial ribs being formed between and separated from said openings formed in the channels and forming cross-over passages that permit a second fluid to flow radially between said inner and outer bosses;
• at least one of said outer bosses having at least one port formed for passage of the second fluid into or out of a sealed first space formed by the two outer bosses;
• and
• means extending over one side of said pair of manifold plates for sealingly enclosing the adjacent intermediate channel of said manifold plates, said enclosing means having one or more apertures formed therein and forming a flow passage for said first fluid to flow between said openings in the intermediate channels and said one or more apertures,
• wherein said inner boss of one of said pair of manifold plates has holes for the passage of said second fluid into or out of a sealed second space formed by the two inner bosses.

A heat exchanger for heat transfer between first and second heat exchanging fluids, said heat exchanger comprising:

• a plurality of stacked plate pairs consisting of face-to-face, mating plates, each plate having edge flanges extending along edges thereof, first and second spaced-apart elongate primary ridges each having a portion thereof located in a common first plane with at least one of said edge flanges, an elongate secondary ridge having a portion thereof located in a second plane spaced from said first plane and substantially parallel thereto, said secondary ridge being provided between an adjacent one of said edge flanges and said first primary ridge of the respective plate, and an intermediate area located between said first and second primary ridges, the intermediate areas of each plate pair having spaced-apart portions to form an inner flow passage between the plates;
• both said primary ridges and said secondary ridge having openings formed therein for the passage of said first and second heat exchanging fluids respectively;
• said secondary ridges being arranged such that in back-to-back plate pairs, the secondary ridges are joined and the respective openings therein communicate to define a manifold for the flow of said second heat exchanging fluid;
• the intermediate areas of back-to-back plate pairs having spaced-apart portions defining outer flow passages therebetween,
• wherein the primary ridges of at least one plate of each plate pair include ribs extending across the width of at least one primary ridge of the at least one plate and distributed along the length of the primary ridge, said ribs being located between and separated from said openings formed in the primary ridge and forming cross-over passages so that the cross over passages of each plate pair permit said secondary heat exchanging fluid to flow transversely across its respective primary ridges and through its respective inner flow passage.

A heat exchanger for heat transfer between first and second heat exchanging fluids, said heat exchanger comprising:

• a plurality of stacked plate pairs consisting of face-to-face mating plates, each plate having edge flanges extending along edges thereof, first and second pairs of spaced-apart elongate primary ridges each having at least a portion thereof located in a common first plane with said edge flanges, three spaced-apart elongate secondary ridges each having a portion thereof located in a second plane spaced from said first plane and substantially parallel thereto, said secondary ridges including a central ridge and two outer ridges located on opposite sides of said central ridge and spaced therefrom, each outer ridge being separated from the central ridge by one of said pairs of primary ridges and an intermediate area located between the respective pair of primary ridges, the intermediate areas of each plate pair having spaced-apart portions forming inner flow passages between the plates of the pair;
• both said primary ridges and said secondary ridges having openings formed therein for the passage of said first and second heat exchanging fluids respectively;
• said secondary ridges being arranged such that in back-to-back plate pairs, the secondary ridges are joined and the respective openings thereof communicate to define three separate manifolds for the flow of said second heat exchanging fluid;
• the intermediate areas of back-to-back plate pairs having space-apart portions defining outer flow passages therebetween,
• wherein the primary ridges of at least one plate of each plate pair include ribs extending across the width of at least two primary ridges of the at least one plate and distributed along the length of the at least two primary ridges, said ribs being located between and separated from said openings in the respective primary ridges and forming crossover passages so that the cross over passages of each plate pair permit said secondary heat exchanging fluid to flow transversely across its respective pairs of primary ridges and through its respective inner flow passages.