Heat Sink With Segmented Heat Transport Member
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Solution Overview
Problem
Existing heat sinks with multiple tube-shaped heat pipes fail to evenly distribute heat input and increase heat resistance due to varying heat reception distances from the heat-generating element, leading to insufficient cooling performance, especially in densely packed electronic devices with high heat generation.
Innovation Solution
A heat sink design featuring a heat transport member with a heat receiving portion thermally connected to the heat-generating element, a tube body connected to a heat insulating or radiating portion, and a heat radiation fin group, where the internal space of the heat transport member communicates with the tube body, allowing a working fluid to flow and distribute heat evenly to the radiation fins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple tube-shaped heat pipes are arranged in parallel to improve cooling characteristics, then the heat receiving area increases, but the heat input cannot be evenly distributed and heat resistance increases due to varying distances from the heat-generating element
Solution Approach 1:
The heat receiving portion is divided into multiple heat receiving units that are arranged in parallel. Each heat receiving unit independently receives heat from the heat-generating element, allowing for even heat distribution across all units and preventing heat resistance increase despite the large total heat receiving area
Solution Approach 2:
Each heat receiving unit is designed with uniform distance from the heat-generating element, ensuring that local heat reception characteristics are consistent across all units. This local uniformity prevents hot spots and ensures reliable cooling performance
2Quantity of substance
If the volume of the heat receiving portion is increased to improve cooling capacity, then more heat can be received, but the heat sink occupies more space
Solution Approach 1:
The heat receiving units are arranged in a planar configuration rather than extending in the depth direction. This allows the heat receiving volume to be increased by utilizing surface area in two dimensions, achieving high cooling capacity while maintaining a compact overall heat sink volume
Solution Approach 2:
The multiple heat receiving units are arranged in a nested or closely packed configuration, maximizing the heat receiving volume within a compact footprint. The units share common structures such as the heat radiation fin group, reducing overall heat sink volume
3Volume of stationary object
If flat portions of heat pipes are arranged in parallel in the longitudinal direction to increase heat receiving volume, then the volume increases, but the heat receiving area of each heat pipe decreases and heat resistance increases
Solution Approach 1:
The heat receiving portion is segmented into multiple independent heat receiving units rather than using a single large heat pipe. Each unit maintains sufficient heat receiving area while the collective arrangement achieves the required heat receiving volume, preventing heat resistance increase
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design ensures uniform heat distribution and increased volume of the heat receiving portion, preventing heat resistance increases, thus achieving excellent cooling performance even with high heat generation from electronic components, while also allowing for space-efficient installation.
Implementation Method 1
a heat transport member (10) having a heat receiving portion (41) thermally connected to a heat-generating element (100)... the internal space of the heat transport member (10) communicates with an internal space of the tube body (31)... a working fluid flows and distribute heat
Implementation Method 2
a heat radiation fin group (20) which are thermally connected to the tube body (31) and in which a plurality of heat radiation fins (21, 22) are arranged
Implementation Method 3
the heat receiving portion (41) thermally connected to a heat-generating element (100)... the internal space of the heat transport member (10) communicates from the heat receiving portion (41) to a connection portion with the tube body (31)
Data Source
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AI summary
An object of the present invention is to provide a heat sink that can equalize heat input in a heat receiving portion and increase a volume of the heat receiving portion, prevent an increase in heat resistance in the heat receiving portion even when a heat generation amount from a heat-generating element increases, and exhibit excellent cooling performance with respect to a cooling target. There is provided a heat sink including: a heat transport member having a heat receiving portion thermally connected to a heat-generating element; a tube body connected to a heat insulating portion or a heat radiating portion of the heat transport member; and a heat radiation fin group which is thermally connected to the tube body and in which a plurality of heat radiation fins are arranged, in which the heat transport member has an integral internal space that communicates from the heat receiving portion to a connection portion with the tube body and is sealed with a working fluid, and the internal space of the heat transport member communicates with an internal space of the tube body.