Plate heat exchanger

US8887796B2 · kind B2 · utility

Assignee

• ALFA LAVAL CORPORATE AB · SE

Inventors

• Rolf Christensen · Stenungsund, SE
• Fredrik Andreasson · Nanhu, CN
• Rolf Bermhult · Lund, SE
• Håkan Larsson · Halmstad, SE
• Magnus Svensson · Gothenburg, SE

Key dates

• Filing date: Apr 4, 2008
• Grant date: Nov 18, 2014
• Expiry date: Jul 28, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F28F2275/04
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A plate heat exchanger including a plurality of heat exchanger plates joined to each other. Each plate has a heat transfer area, a first porthole area, a second porthole area, a third porthole area and a fourth porthole area. Each porthole area surrounds a porthole having a porthole edge. Each porthole area comprises an annular flat area, a set of inner portions on the annular flat area along the porthole edge, and a set of outer portions along the annular flat area at a distance from the inner portions. The outer portions of the first porthole area have a first relative peripheral position with respect to the inner portions. The outer portions of the fourth porthole area have a second relative peripheral position with respect to the inner portions. The first relative peripheral position includes a peripheral displacement in relation to the second relative peripheral position.