Patent attributes
A semiconductor module cooler supplies a cooling medium to a cooling medium jacket from outside to cool a plurality of semiconductor elements thermally connected to the cooling medium jacket through a heat sink. The cooling medium jacket has a cooling fin cooling room including an opening for inserting cooling fins, and cooling the cooling fins; a cooling medium introduction port to introduce the cooling medium; a cooling medium diffusion room to diffuse and supply the cooling medium to the cooling fin cooling room; a cooling medium diffusion wall provided in the cooling medium diffusion room in which the cooling medium diffused by the cooling medium diffusion room flows over to be introduced to the cooling fin cooling room side; a cooling medium discharge port discharging the cooling medium to the outside; and a cooling medium convergence room provided between the cooling fin cooling room and the cooling medium discharge port.