In a heat exchanger in which the number of parts is small, assembling is easy, bonded portions of each part are fewer and reliability of brazing is improved, a core body is constituted by turning up and bending a strip-shaped metal plate in a fanfold manner, and first flow passages and second flow p
In a heat exchanger in which the number of parts is small, assembling is easy, bonded portions of each part are fewer and reliability of brazing is improved, a core body is constituted by turning up and bending a strip-shaped metal plate in a fanfold manner, and first flow passages and second flow passages are formed alternately in the thickness direction. Both ends of each of the first flow passages are blocked by each come tooth of a pair of comb-state members, and a fin is set within the second flow passages so as to constitute a core. And in the heat exchanger in which a cylindrical casing is fitted with the outer periphery of the core body, the comb-state member has its tooth base crossing perpendicularly with each of the comb tooth and a root of each comb tooth bent in the L-shape along the tooth base, the plane of the tooth base is brought into contact with a turned-up end edge, and each connection portion between the comb-state member and the core body is integrally brazed/fixed.
대표청구항▼
The invention claimed is: 1. A heat exchanger comprising a core body in which a strip-shaped metal plate is turned up and bent in a fanfold manner with turned-up end edges alternately formed at a first end and a second end of a rectangular flat face portion, and flat first flow passages and second
The invention claimed is: 1. A heat exchanger comprising a core body in which a strip-shaped metal plate is turned up and bent in a fanfold manner with turned-up end edges alternately formed at a first end and a second end of a rectangular flat face portion, and flat first flow passages and second flow passages are provided alternately in the thickness direction of the metal plate; a pair of comb-state members, wherein each of the first flow passages of the core body is blocked by a comb tooth of the pair of comb-state members at both end positions of said turned-up end edges; a fin set within said second flow passages; a tubular casing having a first end portion and a second end portion, wherein an outer periphery of the core body is fitted with the tubular casing so as to block adjacent turned-up end edges; an inlet port on an outer face of said casing fluidly connected to the first flow passage; an outlet port on the outer face of said casing fluidly connected to the first flow passage, wherein a first fluid is guided to each of the first flow passages by the inlet port and guided from each of the first flow passages by the outlet port; each of the comb-state members being further comprised of a tooth base, the tooth base having a tooth connecting side, a distal side opposing the tooth connecting side in a first direction from the tooth connecting side to a proximal end position of the end positions of the turned up edges, and a tooth base brazing side extending between the tooth connecting side and the distal side along the turned up edges on the first end of the flat face portion, the tooth base brazing side being attached to the turned up edges on the first end of the flat face portion by brazing; and the comb-state members each including comb teeth, each comb tooth of the comb teeth being comprised of a root and an extending portion, the root being connected to and extending from the tooth connecting side of the tooth base in a second direction opposing said first direction then turning back to the first direction and extending in the first direction to the extending portion, the extending portion being connected to the root where the root extends in the first direction at a position offset in the first direction from the tooth connecting side of the tooth base. 2. The heat exchanger according to claim 1, wherein a tip end portion of each comb tooth of one of the comb-state members has a curved portion, the end of the curved portion is formed so as to face the other comb-state member, and said first fluid is guided from the vicinity of said tooth base of the one comb-state member to each of the first flow passages. 3. The heat exchanger according to claim 2, wherein the tip end of said curved portion is turned up and a turned-up tip end portion is formed, and the turned-up tip end portion is brought into contact with and fixed to a respective one of the turned-up end edges of said core body. 4. A heat exchanger comprising: a core body in which a strip-shaped metal plate is turned up and bent in a fanfold manner with turned-up end edges alternately formed at one end and the other end of a rectangular flat face portion, and flat first flow passages and second flow passages are provided alternately in the thickness direction of the metal plate; a pair of comb-state members each having comb teeth; each of the first flow passages of the core body being blocked by a comb tooth of the pair of comb-state members at end positions of said turned-up end edges, and a fin being set within said second flow passages so as to constitute a core; an outer periphery of the core body being fitted with a tubular casing so as to block adjacent ones of the turned-up end edges; a tubular casing having an inlet port and an outlet port provided on an outer face of said tubular casing, and first and second tubular openings; a first fluid being guided to each of the first flow passages by the inlet and outlet ports; and a second fluid being guided from one of the tubular openings of said casing to another of the tubular openings through each of the second flow passages, wherein: each of said comb-state members has a tooth base that crosses perpendicularly with each of the comb teeth, a root of each of the comb teeth is bent in an L-shape along the tooth base, a plane of the tooth base is in contact with said turned-up end edge, and each connection portion between the comb-state member and the core body is integrally brazed/fixed, and a tip end portion of each of the comb teeth of one of the comb-state members has a curved portion, the end of the curved portion is formed so as to face the other comb-state member, and said first fluid is guided from a vicinity of said tooth base of the one comb-state member to each of the first flow passages, and the tip end of said curved portion is turned up and a turned-up tip end portion is formed, and the turned-up tip end portion is brought into contact with and fixed to a respective one of the turned-up end edges of said core body.
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이 특허에 인용된 특허 (25)
Thyrum,Geoffrey P.; Garner,Scott D., Air-to-air heat exchanger.
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