Plate heat exchanger

US9694434B2 · kind B2 · utility

Assignee

• ALFA LAVAL CORPORATE AB · SE

Inventors

• Per Sjödin · Lund, SE
• Kristian Walter · Genarp, SE

Key dates

• Filing date: Mar 27, 2013
• Grant date: Jul 4, 2017
• Expiry date: May 24, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

Disclosed is a method for producing a permanently joined plate heat exchanger comprising a plurality of metal heat exchanger plates having a solidus temperature above 1100° C., provided beside each other and forming a plate package with first plate interspaces for a first medium and second plate interspaces for a second medium, wherein the first and second plate interspaces are provided in an alternating order in the plate package, wherein each heat exchanger plate comprises a heat transfer area and an edge area comprising bent edges which extend around the heat transfer area, wherein a first surface of the plates forms a convex shape and a second surface of the plates forms a concave shape, wherein the heat transfer area comprises a corrugation of elevations and depressions, wherein said corrugation of the plates and the bent edges are provided by pressing the plates. Also disclosed is a plate heat exchanger produced by the method.