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

Claim 2:
3. The heat dissipation device according to claim 1, wherein
the casing body includes:
a first outflow port that connects the first pump chamber and the flow path portion and through which the liquid flows out from the first pump chamber to the flow path portion; and
a second outflow port that connects the second pump chamber and the flow path portion and through which the liquid flows out from the second pump chamber to the flow path portion; wherein
the flow path portion includes:
a first check valve downstream of the first outflow port; and
a second check valve downstream of the second outflow port;
the first check valve blocks inflow of the liquid to the first outflow port in a state when the first pump is stopped; and
the second check valve blocks inflow of the liquid to the second outflow port in a state where the second pump is stopped.