Thermal Fluid Hinge for Portable System Heat Dissipation
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Solution Overview
Problem
Portable information handling systems face challenges in efficiently dissipating thermal energy due to their low profile design, which limits processing component power and causes thermal throttling, especially in convertible configurations where rotationally coupled housing portions increase mechanical stress and restrict thermal dissipation.
Innovation Solution
A system and method that utilize thermal conduits and vapor chambers to transfer thermal energy between rotationally coupled housing portions, managing thermal dissipation by adjusting the saturation point of fluids in vapor chambers and integrating thermally conductive materials like graphite to enhance passive cooling and distribute heat across a greater surface area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a low profile design is used for portable information handling systems, then the device becomes more compact and portable, but thermal energy dissipation becomes inefficient causing thermal throttling
Solution Approach 1:
The patent utilizes the hinge as a three-dimensional thermal pathway that extends thermal conduction beyond the traditional planar housing boundaries. By integrating thermally conductive material within the hinge structure that connects the base housing portion to the lid housing portion, the system creates a vertical and angular thermal dissipation route that leverages the rotational dimension of the hinge mechanism, allowing heat to be conducted along the hinge axis and rejected from previously underutilized housing surfaces.
Solution Approach 2:
The hinge itself serves as a thermal intermediary component, containing thermally conductive material that acts as a heat transfer medium between the base housing portion (containing heat-generating components) and the lid housing portion (providing additional thermal rejection surface). This intermediary structure enables passive thermal transfer without requiring additional active cooling components, resolving the contradiction between compact design and thermal management.
2Adaptability or versatility
If rotationally coupled housing portions are used in convertible configurations, then the device gains configuration flexibility, but mechanical stress increases and thermal dissipation is restricted
Solution Approach 1:
The hinge is designed to perform multiple functions simultaneously: it provides the mechanical rotational coupling for convertible configurations while also serving as a thermal conduction pathway. The integrated thermally conductive material within the hinge structure allows the same component to manage both mechanical movement and thermal transfer, eliminating the need for separate thermal management components that would add complexity or stress.
Solution Approach 2:
The patent merges the mechanical hinge function with the thermal management function by integrating thermally conductive material directly into the hinge structure. This combination allows the hinge to simultaneously enable configuration flexibility through rotation and facilitate thermal dissipation through conduction, reducing the overall mechanical stress that would result from adding separate thermal management components.
3Temperature
If thermally conductive material is integrated in the hinge, then thermal energy transfer between housing portions is enhanced, but device complexity increases
Solution Approach 1:
The patent combines the thermal conduction function with the existing hinge structure by integrating thermally conductive material directly into the hinge. This merging approach allows thermal management to be achieved through the hinge itself rather than requiring separate thermal pathways, thereby enhancing thermal energy transfer while minimizing the increase in device complexity.
Solution Approach 2:
The hinge is designed as a multi-functional component that simultaneously provides mechanical rotation and thermal conduction. By making the hinge universal in its functionality, the patent avoids adding separate components for thermal management, thus enhancing thermal transfer capability without proportionally increasing device complexity.
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 approach enables efficient thermal energy rejection from low profile information handling systems, maintaining component temperatures within thresholds, allowing for higher processing power without throttling and reducing user discomfort from excessive heat.
Implementation Method 1
managing thermal dissipation by adjusting the saturation point of fluids in vapor chambers
Implementation Method 2
integrating thermally conductive materials like graphite to enhance passive cooling and distribute heat across a greater surface area
Implementation Method 3
enables efficient thermal energy rejection from low profile information handling systems
Data Source
AI summary
A portable information handling system transfers thermal energy associated with operation of processing components in a first housing portion to a thermal exchanger in a second housing portion through a hinge that rotationally couples the first and second housing portions. The hinge has first and second axles that each define a channel. Fluid heated at the first housing portion passes through the channel to the thermal exchanger where thermal energy is rejected from the system. In one embodiment, a second hinge having first and second axles that each define a channel provides a return path for the fluid from the second housing portion to the first housing portion.