Patent · US Expired

Welded plate heat exchanger

US5638899A · kind A · utility

9Cited by

3References

7Claims

0Family size

Assignee

Alfa Laval Thermal AB · SE

Inventors

Ralf Blomgren · Skanör med Falsterbo, SE
Jarl Andersson · Lund, SE
Mats Nilsson · Lund, SE

Key dates

Filing date	Mar 28, 1995
Grant date	Jun 17, 1997
Priority date	—
Expiry date	Mar 28, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S165/384
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

In a welded plate heat exchanger the edge portion of each heat transferring plate (2) is welded together with the edge portions of a first adjacent heat transferring plate (3) along an outer line (10B) and with the edge portion of a second adjacent heat transferring plate (1) along an inner line (11B). In order to ensure, in connection with welding together of the heat transferring plates from only one direction, that contact is maintained between the plates along said outer line (10B) each heat transferring plate is formed with a stiffening crease (18) outside said outer line. The stiffening crease (18) extends along the edge of plate outside said outer line (10B).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.