| 摘要 |
PCT No. PCT/SE92/00442 Sec. 371 Date Dec. 13, 1993 Sec. 102(e) Date Dec. 13, 1993 PCT Filed Jun. 18, 1992 PCT Pub. No. WO93/00563 PCT Pub. Date Jan. 7, 1993.A plate heat exchanger for heat transfer media, comprising a plurality of heat transfer plates having ridges (11) running adjacent each other, the top portions (13) of which are located on a specific distance from a plane parallel with the plate, and in an angle with these ridges, grooves (12) running adjacent to each other, the bottom portions (14) of which are located on an equal distance from said plane. Each plane portion located between two parallel ridges (11) and two parallel grooves (12), is provided with protrusions (18) and depressions (19), the top portions (20) and bottom portions (21) of which, respectively, are located closed to said plane than said specific distance. At least one of said plate portions (15) is provided with only two protrusions (18) formed in connection to each of said two grooves (12) and only two depressions (19) formed in connection to each of said two ridges (11), and a wall (22), which extends from the top portion (13) of the ridge to the bottom portion (21) of the depression and from the bottom portion (14) of the groove to the top portion (20) of the projection, respectively, shows a height which exceed said specific distance. |
