Heat exchanger
First Claim
1. In a heat exchanger including a housing and a core part having a plurality of generally parallel partitions defining between them fluid fow passages which are alternately spaced as even-numbered and odd-numbered passages respectively for relatively hot and cold fluids to flow in counter-flow heat exchanger relationship, the improvement wherein said core part comprises:
- (a) a continuous metal strip folded in successive reverse bends thereby defining said partitions and intermediate strips between and connecting said partitions, whereby each two adjacent partitions and intermediate strip define walls of one of said passages with a remaining open side and opposite edge ends,(b) first side closure means for closing a portion of said open sides on said one side of said core,(c) second side closure means for closing a portion of the open sides on said other side of said core,(d) first edge end closure means for closing adjacent edge ends of partitions on one end of said core for establishing between said closed adjacent edge ends openings to said passages,(e) second edge end closure means for closing adjacent edge ends of partitions on the opposite end of said core for establishing between said closed adjacent edge ends openings to said passages,(f) whereby said first and second side closure means together with said first and second edge end closure means establish said passages into a counter-flow system of said even-numbered and odd-numbered passages, and(g) partition spacing means for spacing adjacent partitions which define the walls of a passage to permit angular fluid flow comprising a plurality of separated projections which project from a partition surface toward the adjacent partition which forms the passage, said projections being arranged in a pattern providing for angular fluid flow between projections so that fluid flows angularly throughut the entire passage.
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Accused Products
Abstract
A heat exchanger core is formed from a single foil strip folded into successive U-bends to define alternate fluid passages, with even-numbered passages being for hot fluid and odd-numbered passages being for cold fluid. The folded foil thus defines three walls of each passage with the remaining fourth side open. Top and bottom plates cover and close the open sides of all the hot and cold passages respectively. The ends of certain passages remain open; the ends of other passages are selectively closed by pinching together the ends of adjacent foil walls which define the passages. A pre-formed end plate has apertures between deformable ribs; the apertures are aligned with the ends of open passages, and the ribs overlie and are joined with the pinched ends of the closed passages.
71 Citations
13 Claims
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1. In a heat exchanger including a housing and a core part having a plurality of generally parallel partitions defining between them fluid fow passages which are alternately spaced as even-numbered and odd-numbered passages respectively for relatively hot and cold fluids to flow in counter-flow heat exchanger relationship, the improvement wherein said core part comprises:
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(a) a continuous metal strip folded in successive reverse bends thereby defining said partitions and intermediate strips between and connecting said partitions, whereby each two adjacent partitions and intermediate strip define walls of one of said passages with a remaining open side and opposite edge ends, (b) first side closure means for closing a portion of said open sides on said one side of said core, (c) second side closure means for closing a portion of the open sides on said other side of said core, (d) first edge end closure means for closing adjacent edge ends of partitions on one end of said core for establishing between said closed adjacent edge ends openings to said passages, (e) second edge end closure means for closing adjacent edge ends of partitions on the opposite end of said core for establishing between said closed adjacent edge ends openings to said passages, (f) whereby said first and second side closure means together with said first and second edge end closure means establish said passages into a counter-flow system of said even-numbered and odd-numbered passages, and (g) partition spacing means for spacing adjacent partitions which define the walls of a passage to permit angular fluid flow comprising a plurality of separated projections which project from a partition surface toward the adjacent partition which forms the passage, said projections being arranged in a pattern providing for angular fluid flow between projections so that fluid flows angularly throughut the entire passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification