Heat sink airflow control method

JP7873986B2Active Publication Date: 2026-06-15NISSAN MOTOR CO LTD +1
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
NISSAN MOTOR CO LTD
Filing Date
2022-04-19
Publication Date
2026-06-15

AI Technical Summary

⚠Technical Problem

Conventional plasma actuators for heat sinks face issues with increased power consumption due to varying airflow speeds, which affect cooling efficiency and power consumption.

⚗Method used

The airflow control method uses at least two plasma actuators positioned on fins in a heat sink to generate induced airflow, intermittently driven to create vortex flows that enhance cooling efficiency and reduce power consumption by alternating airflow direction with burst driving.

🎯Benefits of technology

This method improves cooling efficiency and reduces power consumption by generating vortex flows that stir the main airflow, promoting heat dissipation without significantly increasing pressure loss.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To solve a problem of high power consumption in conventional cooling devices using plasma actuators.SOLUTION: In a heat sink H in which a plurality of fins 2 are arranged, a method for controlling an airflow in a flow path 3 formed between the fins 2, includes: arranging one plasma actuator P1 and the other plasma actuator P2, respectively for one fin 2 and the other fin 2 forming the flow path 3, in a direction that generates an induced air flow F2 in a direction along a main flow F1 in the flow path 3; intermittently generating the induced air flow F2 by burst driving each of the one plasma actuator P1 and the other plasma actuator P2; and intermittently generating a vortex flow V due to interference between the main flow F1 and the induced air flow F2 in the flow path 3. Accordingly, cooling efficiency is improved and power consumption is reduced in the heat sink H using the plasma actuator P.SELECTED DRAWING: Figure 1
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