Phase-Change Heat Radiator for Uniform Remote Radio Unit Cooling
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Solution Overview
Problem
Conventional remote radio units suffer from poor heat dissipation due to the low thermal conductivity of die-casting aluminum alloy substrates, leading to non-uniform heat distribution and reduced heat dissipation efficiency.
Innovation Solution
A radiator design incorporating a heat dissipation component with an accommodation cavity that vaporizes and condenses cooling liquid to facilitate gas-liquid two-phase heat dissipation, coupled with welding or fastening methods to enhance connection integrity and reduce air leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a die-casting aluminum alloy substrate is used in the radiator, then the structure is simple and easy to manufacture, but the thermal conductivity is low and heat dissipation uniformity is poor
Solution Approach 1:
The patent uses a composite structure combining die-casting aluminum alloy substrate with copper heat sink fins. The copper fins are bonded to the aluminum substrate through a bonding layer, creating a composite material system that leverages the low cost and ease of manufacturing of aluminum while utilizing the superior thermal conductivity of copper for effective heat dissipation. This resolves the contradiction by integrating materials with complementary properties.
Solution Approach 2:
The patent introduces a bonding layer as an intermediary between the aluminum substrate and copper fins. This bonding layer facilitates thermal transfer from the aluminum substrate to the copper fins, enabling effective heat conduction while maintaining the structural simplicity and manufacturing ease of the aluminum-based design. The bonding layer acts as a thermal bridge that resolves the thermal conductivity limitation of pure aluminum.
2Ease of manufacture
If a die-casting aluminum alloy substrate is used in the radiator, then the manufacturing cost is low, but the heat dissipation effect is poor due to low thermal conductivity
Solution Approach 1:
The patent creates a composite structure where inexpensive die-casting aluminum alloy substrate is combined with high-performance copper heat sink fins. The aluminum substrate provides cost-effectiveness and structural integrity, while the copper fins deliver superior heat dissipation performance. This composite approach maintains low manufacturing cost while significantly improving heat dissipation effect.
Solution Approach 2:
The patent applies different material qualities to different parts of the radiator system. The aluminum substrate provides structural support and cost-effectiveness, while the copper fins provide enhanced thermal performance where it is most needed for heat dissipation. This local differentiation of material properties optimizes both cost and performance.
3Device complexity
If conventional die-casting aluminum alloy radiator is used, then the structure is simple, but temperature equalization performance is poor
Solution Approach 1:
The patent employs a composite structure with aluminum substrate and copper fins that enables superior temperature equalization. The copper fins, with their high thermal conductivity, rapidly distribute heat across their surfaces, while the bonding layer ensures efficient thermal coupling with the aluminum substrate. This maintains structural simplicity while dramatically improving temperature equalization performance.
Solution Approach 2:
The bonding layer serves as a thermal intermediary that ensures efficient heat transfer from the aluminum substrate to the copper fins, enabling uniform temperature distribution across the entire radiator surface. This intermediary layer resolves the temperature equalization issue while maintaining structural simplicity.
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 design achieves improved heat dissipation uniformity and efficiency by reducing heat resistance and enhancing temperature equalization, thereby increasing the overall heat dissipation performance of the remote radio unit.
Implementation Method 1
the cooling liquid in the accommodation cavity vaporizes and evaporates into the accommodation cavity after absorbing heat dissipated from the heat source component
Implementation Method 2
the cooling liquid in the accommodation cavity vaporizes and evaporates into the accommodation cavity after absorbing heat dissipated from the heat source component
Implementation Method 3
The vaporized and evaporated working liquid condenses and releases heat when touching an inner wall of the accommodation cavity
Implementation Method 4
Heat of a heat generation element is sequentially diffused onto the substrate and the heat sink fins, and heat is exchanged with an environment by using the substrate and the heat sink fins
Data Source
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AI summary
A radiator (10), a method for manufacturing a radiator (10), and a remote radio unit are provided. The radiator (10) includes a tank (11) and a heat dissipation component (12) disposed in the tank (11). The heat dissipation component (12) includes a housing (121), where the housing (121) has an accommodation cavity (122) for accommodating cooling liquid. The heat dissipation component (12) is in contact with a heat source component (20) of the remote radio unit by using a first opening (111) on one side of the tank (11). The cooling liquid in the accommodation cavity (122) vaporizes and evaporates into the accommodation cavity (122) after absorbing heat dissipated from the heat source component (20). The vaporized and evaporated working liquid condenses and releases heat when touching an inner wall of the accommodation cavity (122) (such as the top of the accommodation cavity (122)) with low temperature, and the condensed cooling liquid flows back to the bottom of the accommodation cavity (122). A cycle is repeated in this way, so that uniform heat dissipation and high temperature equalization performance are implemented, and a heat dissipation effect of the radiator (10) is effectively improved.