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发明授权
CN101460803B 换热器板和板式换热器 有权

换热器板和板式换热器
摘要：
本发明涉及一种换热器板(3)和包括许多这样的换热器板的板式换热器。每个换热器板包括传热区域(15)，包围传热区域和在传热区域外延伸的边区域(16)，和贯穿换热器板并位于边区域内部和附近的许多孔道(18)，孔道由孔道边限定和具有中心，其中孔道边具有面对边区域的第一边部分(19’)和面对传热区域的第二边部分(19″)，从孔道中心看起来。第一边部分具有褶皱，而且从孔道的中心看起来，第二边部分具有基本上平面的形状。
摘要（英）：

The invention refers to a heat exchanger plate (3), and a plate heat exchanger comprising a number of such heat exchanger plates. Each heat exchanger plate comprises a heat transfer area (15), an edge area (16), which extends around and outside the heat transfer area, and a number of portholes (18), which extend through the heat exchanger plate and are located inside and in the proximity of the edge area. The porthole is defined by a porthole edge and has a centre. The porthole edge has a first edge portion (19'), which faces the edge area, and a second edge portion (19''), which faces the heat transfer area. The first edge portion has a corrugation seen from the centre of the porthole. The second edge portion has a substantially plane shape seen from the centre of the porthole.

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