Title:
EXTRUDED MANIFOLD AND METHOD OF MAKING SAME
Document Type and Number:
WIPO Patent Application WO2003040639
Kind Code:
A3
Abstract:
An extruded D-shaped manifold (100) machined from extruded tubing is generally D-shaped in cross-section, with the header (110) being thicker than the tank (120). At least two longitudinal external ribs (140) are formed on the header exterior (110a), preferably positioned symmetrically relative to the longitudinal axis of the header (110). The external ribs (140) provide additional strengthening of the header (110) and act as stops to prevent the heat exchanger fins (504) from contacting the tube/manifold joint, which can lead to leakage when the joint is brazed. The number of external ribs (140) and their location depend on the size of the manifold (100) and the precision required in positioning the heat exhanger tubes (502) in the slots (150). The manifold (100) can be extruded with lengthwise internal ribs (160) extending along the interior sides (110b) of the tank (120) to act as stops for the heat exchanger tubes (502).
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Inventors:
GOWAN JAMES D (US)
COSTELLO NORMAN F (US)
COSTELLO NORMAN F (US)
Application Number:
PCT/US2002/035014
Publication Date:
October 09, 2003
Filing Date:
November 01, 2002
Export Citation:
Assignee:
GOWAN JAMES D (US)
COSTELLO NORMAN F (US)
COSTELLO NORMAN F (US)
International Classes:
F28F9/02; F28F9/18; (IPC1-7): F28F9/02; F28D1/053
Foreign References:
| DE3720483A1 | 1988-01-28 | |||
| JPH05215474A | 1993-08-24 | |||
| US6000461A | 1999-12-14 | |||
| JPH04363591A | 1992-12-16 | |||
| US5062476A | 1991-11-05 |
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