Heat exchange – Side-by-side tubular structures or tube sections – With manifold type header or header plate
Patent
1990-10-22
1992-12-22
Davis, Jr., Albert W.
Heat exchange
Side-by-side tubular structures or tube sections
With manifold type header or header plate
165 67, 165175, 165153, 29890052, 29890043, F28F 902
Patent
active
051727625
ABSTRACT:
A heat exchanger includes a pair of header pipes, tubes disposed between the header pipes, and radiation fins provided along the tubes. Each of the header pipes has a plurality of connection holes for the tubes. Each of the header pipes is formed by bending a longitudinal flat plate in the form of a pipe and connecting the side edge portions of the bent plate to each other. The side edge portions of the bent longitudinal plate have connecting portions which are connected to each other with a junction area larger than the cross-sectional area defined by the thickness and length of each header pipe at a position other than the side edge portions. The connection holes are processed before the longitudinal flat plate is bent, and therefore, can be easily and precisely formed at desired positions. The manufacture of the heat exchanger can be simplified and the cost for the manufacture can be reduced. The connection strength of the side edge portions can be increased by the larger connection area of the connecting portions. The strength of the header pipe can be maintained over a long period of time.
REFERENCES:
patent: 1583758 (1926-05-01), White
patent: 3757855 (1973-09-01), Kun et al.
patent: 4770240 (1988-09-01), Dawson et al.
patent: 4945635 (1990-08-01), Nobusue et al.
patent: 4969512 (1990-11-01), Hisao et al.
Ando Nobuyasu
Aoki Hisao
Shinmura Toshiharu
Sutou Naoyoshi
Davis Jr. Albert W.
Sanden Corporation
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