Header pipes for heat exchanger

Details Header pipes for heat exchanger Header pipes for heat exchanger

1997-12-30

1999-02-09

Lazarus, Ira S.

Heat exchange

Radiator core type

Deformed sheet forms passages between side-by-side tube means

165175, 165906, F28D 102

Patent

active

058681981

ABSTRACT:
The header pipes 3 and 4 of a heat exchanger 1, wherein each of the header pipes is provided with a plurality of tube insertion holes 9 in a longitudinal direction; the ends of tubes 2 are inserted into the tube insertion holes; the extended portions 3a and 4a respectively include longitudinally extended portions respectively extending from the portion provided with the tube insertion holes; further, the extended portions are provided with the reinforcing beads 13 respectively. The beads 13, each having a width equal to the opening width of each of the tube insertion holes 9, are pitched substantially equally as the tube insertion holes. Further, the header pipes 3 and 4 are formed by shaping a flat-sheet header pipe material H into pipes having a predetermined diameter.

REFERENCES:
patent: 5193613 (1993-03-01), Wallis

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