| 摘要 |
The present invention refers to a plate heat exchanger comprising a package of heat exchange plates (2), each having a peripheral portion (17) and within this a heat exchange portion (9) and several port portions with through-flow ports forming inlet and outlet channels through the package. Said heat exchange plates (2) are permanently joined to each other along their peripheral portions (17) and at a variety of places in the heat exchange portions (9) in such manner that they leave flow passages between adjacent heat exchange plates (2), and between an outer line (13) and an inner line (14) located closer to the inlet and outlet channel, respectively. According to the invention several means (23) is arranged to keep the port portions of the heat exchange plates together, said means (23) being placed between said outer line (13) and adjacent part of the peripheral portion along each of the inlet and outlet channels in the space between the plates communicating with said inlet and outlet channel, respectively. |
