Plate type heat exchanger and method for manufacture thereof
US7179540B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Dec 6, 2001 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | Sep 10, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12979
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A plate type heat exchanger wherein contacting portions of laminated plural plates and fins or contacting portions of laminated plural plates are brazed to form a heat exchange area, characterized in that at least the surface of a plate or fin contacting with a fluid is covered with an alloy comprising in weight ratio 25–35% of chromium, 5–7% of phosphorus, 3–5% of silicon, 0.001–0.1% of at least one selected from the group consisting of aluminum, calcium, yttrium and mischmetal, and balance containing mainly nickel. The alloy may contain 15% or less of iron and or 10% or less of molybdenum.The plate type exchanger exhibits enhanced pressure resistance and is excellent in corrosion resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.