Patent ID: 9057367
Filing Date: 2015-06-16
Classification: F04B,G03B,H04N

Abstract:
1. A cooling device comprising: a pump chamber of which a volume can be changed; an inlet flow passage configured to allow a fluid to flow into the pump chamber; an outlet flow passage configured to allow the fluid to flow out from the pump chamber; a fluid resistance element configured to open or close between the inlet flow passage and the pump chamber; a circulation flow passage that is used for circulating the fluid from the outlet flow passage to the inlet flow passage; a first volume adjusting chamber disposed in the circulation flow passage and upstream of the inlet flow passage; a second volume adjusting chamber disposed in the circulation flow passage and downstream of the outlet flow passage; and a connecting unit located outside of the circulation flow passage and configured to connect the first volume adjusting chamber and the second volume adjusting chamber, the first volume adjusting chamber including a first movable portion which adjusts the volume of the first volume adjusting chamber and the second volume adjusting chamber including a second movable portion which adjusts the volume of the second volume adjusting chamber, wherein a movement of the first movable portion and a movement of the second movable portion are coordinated with each other through the connecting unit.