Flexible Heat Dissipation Device With Bellows Tubes
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Solution Overview
Problem
Conventional loop heat pipes face challenges in accommodating electronic components of varying heights due to inflexible vapor and liquid tubes, leading to increased costs and difficulties in assembly, as they cannot be easily adjusted to match different component levels, resulting in poor contact and heat dissipation efficiency.
Innovation Solution
Incorporating a bellows section with multiple waved stripes on the vapor and liquid tubes allows for flexible bending and adjustment, enabling the heat dissipation device to snugly attach to components of varying heights and absorb bridging forces, thus facilitating assembly and improving heat transfer efficiency across different electronic devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If inflexible metal tubes are used to connect evaporator and condenser, then structural strength is improved, but adaptability to different component heights deteriorates
Solution Approach 1:
The tube structure is transformed from a static rigid configuration to a dynamic flexible one through the addition of bellows sections. These bellows allow the tube to bend and adjust its shape dynamically, enabling adaptation to different component heights while maintaining structural integrity through the elastic properties of the bellows material.
Solution Approach 2:
The patent applies flexible bellows sections to the metal tubes, creating a hybrid structure that combines the strength of metal with the flexibility of bellows. This flexible shell structure allows the tube to bend and conform to varying spatial requirements without compromising the overall structural strength needed to withstand operational pressures.
2Reliability
If tubes are designed to bypass electronic components, then reliability of heat transfer is improved, but device complexity increases
Solution Approach 1:
The flexible tube design serves multiple functions simultaneously: it maintains the heat transfer pathway around electronic components while also providing structural flexibility and absorption of thermal expansion. This multi-functionality reduces the need for additional separate components, thereby managing device complexity while ensuring reliable heat transfer.
Solution Approach 2:
The patent utilizes changes in the tube's geometric parameters through bellows expansion and contraction to navigate around electronic components. By varying the tube's shape and position dynamically, the system maintains reliable heat transfer pathways without requiring complex rigid routing structures.
3Ease of operation
If evaporator and condenser are assembled at different levels, then ease of assembly is improved, but heat dissipation efficiency deteriorates
Solution Approach 1:
The flexible bellows sections enable the tube to dynamically adjust its configuration during assembly, accommodating different assembly levels of evaporator and condenser. This dynamic flexibility allows easy assembly at different heights while maintaining optimal heat transfer efficiency by preserving the continuous fluid pathway despite the height difference.
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
The flexible design allows for effective heat dissipation across various electronic components with height differences, ensuring secure attachment and enhanced heat exchange performance by allowing the device to be bent and aligned with components of different heights, thereby improving assembly and heat transfer efficiency.
Implementation Method 1
the bellows section can be freely bent and deformed by any angle or in any direction
Implementation Method 2
The evaporation section is connected with a heat generation component (such as a central processing unit or a graphics processing unit). When the evaporation section of the loop heat pipe absorbs the heat of the heat generation component
Implementation Method 3
the pure water in the evaporation section is heated and evaporated into vapor. The vapor passes through the vapor tube and flows to the condensation section of the loop heat pipe. The heat is radiated from the condensation section and the vapor is condensed into liquid
Data Source
AI summary
A flexible heat dissipation device includes an evaporator, a vapor tube, a liquid tube and a condenser. The evaporator has at least one vapor chamber. A capillary structure and a working fluid are received in the vapor chamber. Two ends of the vapor tube is respectively in communication with one end of the evaporator and the condenser. Two ends of the liquid tube are respectively in communication with the evaporator and the condenser, whereby the evaporator, the vapor tube, the condenser and the liquid tube form a loop for the working fluid to flow through. At least one bellows section is disposed on one or both of the vapor tube and the liquid tube. The bellows section has multiple waved stripes. More than one of the heights, widths and pitches of the multiple waved stripes are equal to or unequal to each other.