Patent attributes
A cooling fluid pump includes a casing having a cylindrical pump chamber inside and an outer surface, the pump chamber having an inner surface, an impeller mounted rotatably inside the pump chamber and having a number of pump vanes, the impeller further having an axial end, a fluid path defined around the impeller in the pump chamber so that a fluid flows through the fluid path upon rotation of the impeller, a discharge port formed in the casing for discharging the fluid inside the fluid path and a suction port formed in the casing for suctioning the fluid into the fluid path upon rotation of the impeller, a protrusion formed on a portion of the inner surface of the pump chamber opposed to the axial end of the impeller, thereby separating the fluid discharged from the discharge port and the fluid suctioned from the suction port as well as pressuring the fluid flowing in the fluid path, and a heat receiving portion formed on a part of the outer surface of the casing overlapping the protrusion.
