Heat Sink Flat Segment Direct Contact Thermal Resistance
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Solution Overview
Problem
Existing heat sinks with heat pipes connected to heat-generating elements via a heat receiving block suffer from increased thermal resistance due to the solder layer and require additional components, which complicates the cooling process.
Innovation Solution
A heat sink configuration where the heat pipe has a flat segment at the heat receiving portion that directly contacts the heat-generating element, reducing the need for a heat receiving block and minimizing thermal resistance by enhancing the stability and flatness of the thermal connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heat receiving block is used to thermally connect the heat pipe to the heat-generating element, then the stability of thermal connection is improved, but the thermal resistance increases due to the solder layer
Solution Approach 1:
The invention extracts and removes the heat receiving block from the thermal connection path. Instead of using a separate heat receiving block with solder layer, the heat pipe's heat receiving portion directly contacts the heat-generating element, eliminating the intermediate component and its associated thermal resistance.
Solution Approach 2:
The invention merges the heat pipe's heat receiving portion directly with the heat-generating element, eliminating the need for a separate heat receiving block. This direct integration removes the solder layer and reduces thermal resistance while maintaining stable thermal connection.
2Reliability
If a heat receiving block is used to fix the heat pipe, then the stability of thermal connection is obtained, but the device complexity increases due to additional components
Solution Approach 1:
The invention extracts and removes the heat receiving block from the assembly. The heat pipe is designed with a heat receiving portion that directly contacts the heat-generating element, eliminating the need for this additional component and simplifying the overall device structure.
Solution Approach 2:
The invention combines the heat pipe and heat-generating element into a direct thermal connection, eliminating the heat receiving block as a separate component. This merging reduces the number of parts while maintaining stable thermal connection.
3Reliability
If a solder layer is used to connect the heat pipe to the heat receiving block, then the stability of thermal connection is achieved, but the thermal resistance increases
Solution Approach 1:
The invention extracts and removes the solder layer from the thermal connection path. By eliminating the heat receiving block, the solder layer that would normally be used to attach the heat pipe is also removed, reducing thermal resistance.
Solution Approach 2:
The invention merges the heat pipe directly with the heat-generating element, eliminating the solder layer that would be required if a heat receiving block were used. This direct contact reduces thermal resistance while maintaining stable thermal connection.
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 configuration achieves reduced thermal resistance and improved cooling characteristics for heat-generating elements with high heat generation, while also simplifying the component structure and reducing manufacturing costs.
Implementation Method 1
a heat sink configured to cool a heat-generating element as a cooling target by transporting heat of the heat-generating element to a heat exchanging portion by using a heat transporting function of a heat pipe
Implementation Method 2
The internal space of the heat pipe communicates from the heat receiving portion to the heat dissipation portion and is filled with a working fluid
Implementation Method 3
the section facing the heat-generating element, of the heat receiving portion is a flat segment that is flat along an extending direction of the heat-generating element, and the flat segment directly contacts the heat-generating element
Implementation Method 4
air is moved in a fixed direction to gaps among the radiating fins to expel heat from the radiating fins
Data Source
AI summary
A heat sink that exhibiting excellent cooling characteristics for a heat-generating element by reducing thermal resistance when heat is transferred from the heat-generating element to a heat receiving portion of a heat pipe is provided. The heat sink includes a heat pipe having a heat receiving portion adapted to be thermally connected to a heat-generating element, and a heat exchanging portion thermally connected to a heat dissipation portion of the heat pipe, wherein the heat pipe has an internal space communicating from the heat receiving portion to the heat dissipation portion, and filled with a working fluid, a section facing the heat-generating element, of the heat receiving portion is a flat segment that is flat along an extending direction of the heat-generating element, and the flat segment directly contacts the heat-generating element.