Furnace heat exchanger
US6470878B1 · kind B1 · utility
9Cited by
19References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2000 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Oct 23, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2250/102
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A furnace heat exchanger with multiple parallel flow passages with at least two of the passages being partially formed of a pair of opposed sidewalls having wavy cross-sectional shapes wherein the downstream passage has at least as many and preferably more waves than the upstream pass. The wavy shapes are preferably generally sinusoidal in form with the waves of the two sides being substantially in phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.