Heat exchanger

The utility model provides a heat exchanger which comprises an upper cover plate and a lower cover plate, and a plurality of capillary channel layers and a plurality of PCHE printed circuit board type channel layers are arranged between the upper cover plate and the lower cover plate. And the capillary channel layers and the PCHE printed circuit board type channel layers are stacked at intervals. According to the utility model, the structural form that the capillary channel layer and the PCHE printed circuit board type channel layer are crossed and overlapped is adopted, so that higher pressure resistance and better liquidity are realized. 本实用新型提供一种换热器，包括上盖板和下盖板，所述的上盖板和下盖板之间设有多层毛细管通道层和多层PCHE印刷电路板式通道层；所述的毛细管通道层和PCHE印刷电路板式通道层相互间隔层叠设置。本实用新型采用毛细管通道层和PCHE印刷电路板式通道层交叉重叠的结构形式，具有更高的耐压性，更好的流通性。