Heat exchanger, and fin material for said heat exchanger
US10408550B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2014 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Jun 2, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F1/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
There is provided a heat exchanger and a fin material for the heat exchanger that can suppress occurrence of hollow corrosion in a fin and hold cooling performance for a long period of time under a high corrosion environment. The heat exchanger includes an aluminum tube through which a working fluid circulates and an aluminum fin which is bonded to the tube. The fin has a region B around a grain boundary, and a region A around the region B. In the region B, 5.0×104 pieces/mm2 less of Al—Fe—Mn—Si based intermetallic compound, each of which has equivalent circle diameters of 0.1 to 2.5 μm, are present. In the region A, 5.0×104 pieces/mm2 to 1.0×107 pieces/mm2 of Al—Fe—Mn—Si based intermetallic compound, each of which has equivalent circle diameters of 0.1 to 2.5 μm, are present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.