Cold Plate Structural Strength via Segmented Fin Design
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Solution Overview
Problem
Conventional cooling devices with rectangular base plates have low strength in regions without fins, leading to deformation when in contact with heat-generating components.
Innovation Solution
A cooling device design featuring a cold plate with a bottom wall portion, top wall portion, and side wall portion forming a first cooling medium flow passage, including blades on the upper surface and a non-forming region with a first inclined portion that narrows as it extends from the blades, enhancing structural strength and heat transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the base plate has a rectangular shape with plate-shaped fins provided only below the cooling medium inlet and outlet through-holes, then the cooling function is achieved, but the strength in the non-formation region is low causing deformation
Solution Approach 1:
The base plate is segmented into multiple regions: a formation region with plate-shaped fins for cooling, and a non-formation region without fins. By dividing the base plate into these functional segments, the design allows the formation region to provide cooling while the non-formation region maintains structural strength to prevent deformation when contacting heat-generating components.
Solution Approach 2:
Different regions of the base plate are given different properties: the formation region has plate-shaped fins for heat dissipation, while the non-formation region has a smooth upper surface for strong contact with heat-generating components. This local differentiation allows each region to fulfill its specific function optimally.
2Strength
If plate-shaped fins are provided on the base plate, then heat transfer efficiency is improved, but the structural strength in regions without fins is reduced
Solution Approach 1:
The base plate is divided into a formation region with fins for heat transfer and a non-formation region without fins for structural support and uniform contact. This segmentation ensures that the finned region provides cooling while the non-finned region maintains reliability in contacting heat-generating components.
Solution Approach 2:
The base plate exhibits local quality variation: the formation region has plate-shaped fins for enhanced heat transfer, while the non-formation region has a smooth surface for reliable contact. This localized property distribution resolves the contradiction between heat transfer efficiency and contact reliability.
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 improves the strength of the cold plate, preventing deformation and enhancing heat transfer efficiency by ensuring a uniform contact with heat-generating components and optimizing the flow passage for better cooling performance.
Implementation Method 1
The cooling medium that has flowed from the cooling medium inlet through-hole into the space formed between the inner face of the lid body and the main face of the cold plate exchanges heat with the plate-shaped fins
Implementation Method 2
The cooling medium flows through the first cooling medium flow passage, exchanging heat with the plate-shaped fins and flowing out through the cooling medium outlet through-hole
Data Source
AI summary
A cooling device includes a cooling plate with a bottom wall portion with a lower surface which contacts a heat-generating component, a top wall portion which covers an upper surface of the bottom wall portion, a side wall portion which couples the bottom wall portion and the top wall portion, and an internal space which is surrounded by the bottom wall portion, the top wall portion, and the side wall portion to define a first cooling medium flow passage. The bottom wall portion includes blades on the upper surface. An inlet port or an outlet port is on one end side of the first cooling medium flow passage. An inner peripheral wall of the side wall portion includes a first bent portion which is bent convex inward between ends of the blades and the at least one of the inlet port and the outlet port.