Surface enlarging elements for heat-exchanger tubes
US5046556A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1990 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Dec 28, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F1/325
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A tube (10) in a heat exchanger, along which a gas transporting heat travels perpendicular to the longitudinal axis of the tube is provided with surface enlarging elements in the form of pieces of metal (11) having a width (B) substantially equivalent to twice the outer diameter of the tube, and a depth equivalent to approximately half its width. One long side of the piece of metal (11) is provided with a circular recess fitting the tube and extending through an angle of less than 180.degree., and the long edge of the piece of metal facing away from the tube is provided with three slits (14, 15, 16). One of these slits is located centrally and the other two are placed so that the metal tongues (17) produced are substantially equal in width. The central slit is deeper than the others.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.