Cooling device

A cooling device comprising:

• a cooling body which is mounted on a heat-generating component and through which a cooling medium as a cooling liquid passes;
• a radiator which cools the cooling medium heated by the cooling body;
• and
• a centrifugal pump which circulates the cooling medium between the cooling body and the radiator,
• wherein the radiator includes a plurality of cooling pipes through which the cooling medium passes, a plurality of heat radiation fins connected to outer peripheral surfaces of the cooling pipes, and a tank chamber to which ends of the plurality of cooling pipes are connected,
• the centrifugal pump includes a motor having a rotor and a stator, an impeller fixed to the rotor and rotated by a power of the motor, and a case body in which a suction port and a discharge port for the cooling medium are formed,
• the motor has a rotation center shaft serving as a rotation center of the rotor and the impeller,
• when one side of the rotation center shaft in an axial direction is a first direction and a direction opposite to the first direction is a second direction,
• the case body is formed in a bottomed cylindrical shape which has a cylindrical portion formed in a cylindrical shape and a bottom portion configured to close one end of the cylindrical portion,
• an axial direction of the cylindrical portion formed in a cylindrical shape coincides with the axial direction of the rotation center shaft,
• the bottom portion closes an end of the cylindrical portion in the first direction,
• a shaft holding portion which holds an end of the rotation center shaft in the first direction is formed in the case body,
• a through-hole which passes through the bottom portion in the axial direction of the rotation center shaft and through which the cooling medium suctioned from the suction port passes is formed at a center of the bottom portion,
• the shaft holding portion is disposed on a side of the bottom portion in the second direction and is connected to a center portion of the bottom portion,
• the centrifugal pump is fixed to the tank chamber in a state in which a bottom surface of the bottom portion on a side in the first direction faces a side surface of the tank chamber on a side in the second direction,
• an annular seal member which prevents a leakage of the cooling medium from a space between the centrifugal pump and the tank chamber is disposed between the bottom surface of the bottom portion and the side surface of the tank chamber to surround the through-hole, and
• an inner peripheral surface of the cylindrical portion connected to a surface of the bottom portion on a side in the second direction and the annular seal member overlap each other when seen in the axial direction of the rotation center shaft.