均热板散热器的传热特性实验研究

Experimental Investigation of Performance for Vapor Chamber Heat Sinks

为了研究通信设备不同应用场景中散热器传热性能,设计了内嵌均热板散热器、复合芯均热板散热器和金属丝网吸热芯均热板散热器3种不同类型的散热器,针对不同风速、不同放置方向(重力因素)对3种均热板散热器的传热性能进行了实验研究。实验结果表明,在不考虑重力因素的情况下,复合芯均热板散热器具有较好的传热性能,而放置方向(重力因素)对复合芯均热板散热器和单一粉末烧结吸热芯均热板散热器的传热性能影响较大,在散热器设计选型时需要重点考虑均热板散热器的实际应用场景。

In order to study the heat transfer performance of heat sink in different application scenarios of communication equipment,three different types of heat sinks are designed,that is the heat sink with vapor chamber strip base,heat sink with composite wick vapor chamber base and heat sink with wiremesh vapor chamber base.The heat dissipation performance of three kinds of vapor chamber heat sink are studied in different wind speed and different orientations(gravity factor).The experimental results show that,without considering the gravity factor,heat sink with composite wick vapor chamber base has better heat dissipation performance,while the orientation(gravity factor)has a great influence on the heat dissipation performance of heat sink with vapor chamber strip base and heat sink with wiremesh vapor chamber base,so it is necessary to focus on the actual application scenarios of the vapor chamber heat sink in the heat sink design and selection.