Indented tube for a heat exchanger
US9149847B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 4, 2005 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Jul 22, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2210/06
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A shell tube and heat exchanger (10) includes a plurality of tubes surrounded by a shell (16). Each tube (12) includes a plurality of indentations. A mold is placed in a desired positions and orientation in a die. A tube is placed in a first position within a die, and the mold crimps the tube to form the desired indentation in the tube. The mold is then released, and the tube is moved relative to the mold to a second position. The mold again crimps the tube to form an additional indentation. Alternately, the mold includes a roller that forms a groove on the tube. The tube is translated or both translated and rotated relative to the mold to form the groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.