Patent ID: 11920879
Assignee: NIDEC CORPORATION
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  H | IPC F  H

Claim 0:
1. A heat dissipation device comprising:
a radiator to cool a liquid and extending in a first direction;
a first tank connected to the radiator and through which the liquid passes; and
a pump assembly connected to the first tank to circulate the liquid flowing in from the first tank; wherein
the radiator includes a pipe through which the liquid passes;
the pipe extends along the first direction;
the pump assembly is located on one side of the radiator in the first direction;
the pump assembly includes:
a first pump to feed and circulate the liquid;
a second pump to feed and circulate the liquid; and
a flow path portion to guide the liquid fed out from the first pump and the second pump toward an outside of the pump assembly;

the heat dissipation device further includes:
a casing body in which the first pump and the second pump are located; and
a cover portion to cover an opening on one side of the casing body in the first direction;

the flow path portion is on another side of the cover portion in the first direction;
the casing body includes:
a first pump chamber in which the first pump is located;
a second pump chamber in which the second pump is located;
a second tank that is connected to the first pump chamber and the second pump chamber and through which the liquid flowing in from the first tank passes;
a first inflow port that connects the second tank and the first pump chamber and through which the liquid flows from the second tank into the first pump chamber; and
a second inflow port that connects the second tank and the second pump chamber and through which the liquid flows from the second tank into the second pump chamber;

the flow path portion contacts a side surface of the casing body which is opposed to a second direction, the second direction is orthogonal to the first direction; and
the flow path portion is arranged above the first inflow port and the second inflow port in a third direction orthogonal to the first direction and the second direction.