Two-Phase Fluid Radiating Fins for Heat Dissipation
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Solution Overview
Problem
Conventional heat dissipation devices with solid radiating fins struggle to effectively dissipate heat in narrow spaces with low air volume, as they are limited by the heat conductivity of the material and cannot be easily integrated into compact electronic devices without compromising performance.
Innovation Solution
A heat dissipation device featuring a base seat with a first chamber and multiple two-phase fluid radiating fins, where each fin has an internal second chamber, utilizing two working fluids to enhance heat transfer and dissipation, independent of the material's conductivity, allowing for efficient heat management in confined environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If solid radiating fins are used to enlarge heat dissipation area, then heat dissipation area is increased, but heat dissipation effect is limited by material heat conductivity
Solution Approach 1:
The patent replaces solid radiating fins with two-phase fluid radiating fins containing working fluid. The fluid circulates through channels in the fins, absorbing heat from the base seat and transporting it to the radiating surfaces. This hydraulic approach overcomes the limitation of solid material heat conductivity by using fluid circulation to actively transport heat, thereby improving heat dissipation effectiveness while maintaining enlarged heat dissipation area.
Solution Approach 2:
The patent changes the state of matter in the radiating fins from solid to fluid. By using two-phase fluid (liquid-vapor mixture) in the fin channels, the system exploits phase change heat transfer mechanisms which have much higher heat transfer coefficients than solid conduction. This parameter change from solid material to fluid medium resolves the contradiction between large surface area and effective heat dissipation.
2Productivity
If fan is added to create greater air volume for heat dissipation, then heat dissipation capability is improved, but device complexity increases and space requirement increases
Solution Approach 1:
The two-phase fluid radiating fin system is self-driven by natural convection and phase change mechanisms. The working fluid automatically circulates through the fin channels without requiring external power sources or mechanical components like fans. The system uses its own thermal energy to drive the heat transfer process, eliminating the need for additional active components and reducing device complexity while maintaining effective heat dissipation capability.
Solution Approach 2:
The patent replaces the mechanical fan-driven air circulation system with a thermodynamic two-phase fluid circulation system. Instead of using mechanical energy (fan motor) to force air flow, the system uses thermal energy to drive phase change and natural convection of the working fluid. This substitution eliminates mechanical components, reduces device complexity, and removes the need for additional power consumption while achieving effective heat dissipation.
3Reliability
If two-phase fluid radiating fins with internal chambers are used, then heat dissipation effect is improved independently of material conductivity, but device complexity increases
Solution Approach 1:
The two-phase fluid radiating fins incorporate internal channels and chambers nested within the fin structure itself. The working fluid channels are embedded inside the fin walls, creating a nested configuration where the fluid circulation path is integrated into the radiating surface structure. This nesting approach improves heat dissipation effectiveness by providing internal heat transport pathways while minimizing the increase in overall device complexity through integrated design.
Solution Approach 2:
The radiating fins utilize a porous or channelled internal structure to accommodate the two-phase working fluid. The porous material or internal channels provide pathways for fluid circulation while maintaining the external radiating surface area. This approach enables effective two-phase heat transfer within the fin structure without significantly complicating the overall device design, as the porous structure serves multiple functions simultaneously.
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 device achieves better heat dissipation without being affected by material conductivity, effectively managing heat in narrow spaces with low air volume, ensuring prolonged device lifespan by efficiently transferring heat away from heat generation components.
Implementation Method 1
two-phase fluid radiating fins... a first working fluid is disposed in the first chamber... a second working fluid is disposed in the second chamber
Implementation Method 2
Each of the two-phase fluid radiating fins is formed with an internal second chamber... a second working fluid is disposed in the second chamber
Implementation Method 3
two-phase fluid radiating fins... achieve better heat dissipation effect... without being affected by the heat conductivity of the material itself
Data Source
AI summary
A heat dissipation device includes a base seat having a first chamber. The first chamber has multiple partitioning sections to partition the first chamber into multiple rooms without communicating with each other. A first working fluid is disposed in the rooms. Multiple two-phase fluid radiating fins are disposed on upper side of the base seat. Each of the two-phase fluid radiating fins is formed with an internal second chamber in communication with the rooms or not in communication with the rooms. The heat dissipation device can achieve better heat dissipation effect.