Liquid Cooling Device Swirling Element Locking Mechanism
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Solution Overview
Problem
Existing liquid cooling devices for power semiconductor components face challenges in preventing rotation of swirling elements, which can lead to inefficiencies in cooling performance due to potential oscillations and critical rotations.
Innovation Solution
A liquid cooling device design featuring a main body with planar surfaces and tubular cooling recesses, where each swirling element includes an operative section for swirling the cooling liquid and a locking section that interacts with a locking abutment or adjacent swirling element to prevent rotation, ensuring the operative section remains stable within the recess.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If swirling elements are installed in cooling recesses to intensify cooling action, then cooling performance is improved, but rotation of the swirling elements occurs leading to oscillations and reduced reliability
Solution Approach 1:
The swirling element is segmented into two functional parts: an operative section (helical portion) that performs the cooling function by swirling the liquid, and a locking section (protrusion) that prevents rotation. This segmentation allows each part to fulfill its specific function independently, resolving the contradiction between cooling effectiveness and positional stability.
Solution Approach 2:
A locking abutment structure is introduced as an intermediary element between the swirling element and the cooling recess. The locking section of the swirling element engages with the locking abutment, creating a mechanical constraint that prevents rotation while allowing the operative section to effectively swirl the cooling liquid.
2Reliability
If locking mechanisms are added to prevent rotation of swirling elements, then reliability is improved, but device complexity increases
Solution Approach 1:
The locking section is merged with the operative section to form a single integrated swirling element. The locking abutment is merged with the cooling recess structure. This merging approach minimizes the number of separate components while achieving the locking function, thus improving reliability without significantly increasing device complexity.
Solution Approach 2:
The locking abutment structure serves multiple functions: it provides the locking constraint to prevent rotation, maintains the positional alignment of the swirling element, and integrates with the existing cooling recess geometry. This multi-functionality reduces the need for additional specialized locking components.
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 solution effectively prevents rotation of the swirling elements, enhancing the cooling performance by maintaining the operative section's position, thereby improving heat transfer efficiency and reducing thermal resistance.
Implementation Method 1
swirling elements, which swirl a cooling liquid flowing through in such a way that the cooling action is intensified
Data Source
AI summary
A liquid cooling device with a main body has a planar surface for the arrangement of a power semiconductor device. This main body has a first end face and a second end face opposite said first one, and a plurality of tubular cooling recesses extending from the first to the second end face. A first swirling element arranged in an associated cooling recess, wherein the swirling element has an operative section arranged within the associated cooling recess and a locking section, wherein the locking section interacts with a locking abutment and/or with a further swirling element, and therefore prevents rotation of the operative section in the associated recess.