Method for manufacturing aluminum tube and fin heat exchanger using open flame brazing
US8074356B2 · kind B2 · utility
6Cited by
42References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2009 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | May 5, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53117
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
According to the preferred embodiment, an improved method and apparatus for the manufacturing of an aluminum tube and aluminum fin heat exchanger that includes steps for pneumatic cleaning, thermal cleaning, and uncontrolled-atmosphere open-flame autobrazing of hairpins to return bend fittings. The method uses a tube lubrication system that is adjustable to control amount of lubrication applied to the tube prior to final expansion. The method uses a pneumatic coil cleaning station that is adjusted to reduce the residual oil particulate from the expansion process required to be thermally cleaned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.