Heat exchange – Gradated heat transfer structure
Patent
1990-04-20
1991-12-31
Flanigan, Allen J.
Heat exchange
Gradated heat transfer structure
165153, 165173, 165174, F28F 1308
Patent
active
050763547
ABSTRACT:
Here is disclosed a heat exchanger of the multiflow type comprising a plurality of flat tubes and corrugated fins stacked together one on another alternately, an inlet header pipe to which said flat tubes are connected at their one ends, an outlet header pipe to which said flat tubes are connected at their other ends, and partitions provided within said respective header pipes so that a flow of refrigerant folded plural times in zigzag fashion is established along a purality of paths defined between the two header pipes, wherein the corrugated fins and the flat tubes are previously dimensioned within the respective optimal ranges and the number of the paths as well as the numbers of the flat tubes defining the respective paths are also optimally selected so that the passage resistance of the refrigerant and the flow resistance of the cooling air may be effectively reduced while improving the heat exchanging efficiency, and thereby a heat exchanger having a totally high reliability may be obtained.
REFERENCES:
patent: 4201263 (1980-05-01), Anderson
patent: 4332293 (1982-06-01), Hiramatsu
patent: 4469168 (1984-09-01), Itoh et al.
patent: 4693307 (1987-09-01), Scorselletta
patent: 4825941 (1989-05-01), Hoshino et al.
Diesel Kiki Co. Ltd.
Flanigan Allen J.
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