Patent ID: 7251137

Claim:
An electronic component cooling apparatus comprising: a heat sink having an electronic component mounting surface on which an electronic component to be cooled is mounted and a coolant path with a coolant inlet and a coolant outlet through which a liquid flows as a coolant to forcibly cool the electronic component mounting surface; a radiator having a liquid path with a coolant inlet and a coolant outlet through which the coolant flows and adapted to air-cool the liquid path to cool the coolant; a motor-driven fan mounted at a heat dissipating portion of the radiator to supply cooling air to the radiator; a first coolant path connecting the coolant outlet of the heat sink to the coolant inlet of the radiator; a second coolant path connecting the coolant outlet of the radiator to the coolant inlet of the heat sink; and a motor-driven pump installed in the first coolant path or the second coolant path to give a moving energy to the coolant: wherein the motor-driven fan includes: an air channel body having a suction port at one end thereof facing a front of the heat dissipating portion of the radiator and a discharge port at the other end thereof; an impeller having a plurality of blades, at least a part of the impeller being arranged inside the air channel body, said plurality of blades each have an edge facing the front of the heat dissipating portion, each of the edges sloping gradually away from the heat dissipating portion as each of the edges extends in a radially outward direction from a rotating center of the impeller; a motor for rotating the impeller so as to draw in air through the suction port and discharge air from the discharge port; and a plurality of engaging pieces integrally provided at the air channel body; and wherein the radiator has a plurality of engaged portions with which the plurality of the engaging pieces engage.