Fin-tube heat exchanger
US9086243B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2007 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Oct 30, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F1/325
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A fin-tube heat exchanger has a plurality of fins (3) arranged parallel to and spaced from each other at a predetermined gap, and a plurality of heat transfer tubes (2) penetrating the fins (3). In each of the fins (3), a first cut-and-raised portion (5a), a second cut-and-raised portion (5b), and a third cut-and-raised portion (5c) are formed in that order by cutting and raising a portion of the each of the fins so as to turn it over from an upstream side to a downstream side. The horizontal cross-sectional shape of each of the first cut-and-raised portion (5a), the second cut-and-raised portion (5b), and the third cut-and-raised portion (5c) is formed in a semicircular shape and curved so as to taper toward the upstream side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.