Furnace heat exchanger
US6793015B1 · kind B1 · utility
28Cited by
19References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2000 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Sep 22, 2021 |
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 wherein at least one flow passage has a cross-sectional shape which transitions from one form to another in a gradual manner so as to reduce the occurrence of stress therein. In one embodiment, the transition is from an oval shape to a wavy shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.