Cooling device

Abstract

To provide a cooling device with a high general purpose in a low cost without performing a processing of a heat sink itself.SOLUTION: A cooling device of the present invention comprises: a heat sink in which a plurality of fins is stood in one main surface of a base plate, and a flow channel is formed between fins; and a plasma actuator in which a pair of electrodes separated by a plate-like dielectric body is off-set and is arranged, and that generates an induction current to an in-surface direction of the main surface of the dielectric body. Then, the plasma actuator is adjacent to an outer side of a flow channel direction end part of the heat sink, and the main surface of the dielectric body and the base plate main surface are arranged in parallel to generate the induction current to the flow channel direction. Therefore, the present invention can provide the cooling device in which a processing of the heat sink is unnecessary, and which has a high generation purpose in a low cost.SELECTED DRAWING: Figure 2

Claims

1. A heat sink having multiple fins erected on one main surface of a base plate, with a flow path formed between the fins, A plasma actuator is provided, comprising a pair of electrodes separated by a plate-shaped dielectric, arranged in an offset manner, which generates an induced flow in the in-plane direction of the main surface of the dielectric, A cooling device comprising, Furthermore, it is equipped with a blower fan that generates airflow in the direction of the flow path. The above blower fan is equipped with the above plasma actuator, The plasma actuator described above is located upstream of the flow direction of the induced flow. The main surface of the dielectric material that generates the induced flow described above is flush with one of the main surfaces of the base plate. A cooling device characterized in that the main surface of the dielectric and the main surface of the base plate are arranged parallel to the outside of the end of the heat sink in the direction of the flow path, thereby generating the induced flow in the direction of the flow path.

2. The cooling device according to Claim 1, characterized in that the frame of the blower fan is a dielectric, and the pair of electrodes are provided to constitute the plasma actuator.

3. A heat sink having a plurality of fins erected on one main surface of a base plate, with a flow path formed between the fins, A plasma actuator is provided, comprising a pair of electrodes separated by a plate-shaped dielectric, arranged in an offset manner, which generates an induced flow in the in-plane direction of the main surface of the dielectric, A cooling device comprising, The plasma actuator is a cooling device characterized in that the electrode gap in the flow direction is narrow in the flow path portion and wide in the fin portion, is adjacent to the outside of the flow path end of the heat sink, and the main surface of the dielectric and the main surface of the base plate are arranged parallel to each other to generate the induced flow in the flow path direction.

4. The cooling device according to claim 3, characterized in that one electrode of the plasma actuator is comb-shaped.

5. The cooling device according to claim 1 or 3, characterized in that the plasma actuator is driven in burst mode.

6. The cooling device according to claim 1 or 3, characterized in that the fins are straight fins.

7. The cooling device according to claim 1 or 3, further comprising a cover on the side opposite to the base plate of the fins.

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