Heat exchanger tube for heating boilers
US6070657A · kind A · utility
16Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 16, 1996 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Sep 16, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2275/14
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The heat exchanger tube comprises a cylindrical, smooth walled outer tube (1) of steel into which a profiled insert (2) of aluminium is inserted. The profiled insert is constituted by two half shells (3,4) which engage in one another at their longitudinal edges with groove-shaped recesses (7) and rib-like projections (8). Both half shells (3,4) carry longitudinally extending ribs (5) on their internal surface which are so aligned that each half shell with its ribs constitutes a profile which is open on one side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.