Extruded Heat Sink Assembly With End-Plugged Coolant Channels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing extruded heat sinks require separate pipes for flow path formation, occupying space and limiting structural rigidity, while brazing heat sinks have structural rigidity issues due to material degradation.
Innovation Solution
A heat sink assembly with integrally molded ribs forming a continuum by extrusion molding, featuring aligned communication ports and closed ends by end plugs, allowing for internal flow paths without separate pipes, enhancing structural rigidity and simplifying flow path configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If brazing heat sinks are used to form flow paths, then flow path design freedom is improved, but structural rigidity deteriorates due to material degradation
Solution Approach 1:
The flow path and heat sink body are merged into a single integral structure through extrusion molding. The ribs and flow paths are formed as one continuous piece, eliminating the need for separate brazing operations and maintaining structural rigidity while achieving the desired flow path configuration.
Solution Approach 2:
The manufacturing method changes from brazing (joining separate parts) to extrusion molding (forming integral structure). This parameter change in the manufacturing process allows the flow path to be formed as an integral part of the heat sink, preserving material properties and structural rigidity.
2Strength
If extruded heat sinks are used with separate pipes for flow path formation, then structural rigidity is improved, but device complexity increases and space is occupied
Solution Approach 1:
The flow path function previously requiring separate pipes is merged into the heat sink body itself. The ribs are integrally molded to form internal flow paths, eliminating the need for separate pipe components and reducing overall device complexity while maintaining structural rigidity.
Solution Approach 2:
The flow path is nested within the heat sink structure itself. The ribs are molded with internal cavities that form the flow path, creating a nested configuration where the cooling channel is embedded within the solid heat dissipation structure, eliminating external pipes.
3Strength
If extruded heat sinks are used with separate pipes for flow path formation, then structural rigidity is improved, but space occupation increases
Solution Approach 1:
The flow path and heat sink are merged into a single integrated component. By forming the flow path internally within the ribs through extrusion molding, the need for external separate pipes is eliminated, reducing the overall volume and space occupation of the heat sink assembly.
4Adaptability or versatility
If multiple separate components are used for flow path formation, then flow path configuration flexibility is improved, but differential pressure increases due to more components
Solution Approach 1:
Multiple separate flow path components are merged into a single integral structure. The continuous extrusion process creates an uninterrupted flow path through the ribs, eliminating joints and connections between separate components, thereby reducing differential pressure while maintaining flow path configuration flexibility.
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 assembly occupies less space, improves differential pressure, and expands heat dissipation area by reducing components and simplifying flow paths, while maintaining structural rigidity.
Implementation Method 1
a plurality of ribs (110) extending in a first direction parallel to each other with spaces therebetween, the spaces between the ribs forming a flow path (112) through which a coolant flows
Implementation Method 2
the spaces between the ribs forming a flow path (112) through which a coolant flows
Data Source
AI summary
A heat sink assembly including first and second heat sinks having a plurality of ribs integrally molded along a length direction by extrusion molding, the spaces between the ribs forming a flow path through which a coolant flows, the first and second surfaces at both ends of the length direction being open is provided. The first and second heat sinks have communication ports on one side wall adjacent to the second surface, and the first and second heat sinks are integrally formed by the side walls forming a bonding surface in a way that the communication ports align. The ribs of the first and second heat sinks have a lengths such that both ends thereof are spaced apart from the first and second surfaces by a predetermined distance, and the open first and second surfaces of both ends of the first and second heat sinks are closed by end plugs inserted into the first surface and the second surface and spaced apart from the ends of the ribs.