Variable-Height Heat Sink Stages for Downstream Heat Transfer
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Solution Overview
Problem
Data centers housing blockchain miners and other high-density computing devices face significant cooling challenges due to the inefficiency of traditional heat sinks, which experience reduced heat transfer efficiency as cooling air temperature rises, leading to reliability and longevity issues.
Innovation Solution
A heat sink design with progressively increasing fin height and width from intake to exhaust, combined with air separators, to enhance heat dissipation by maintaining cooler air flow to downstream fins, thereby improving thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional plate fin heat sinks with small fin spacing are used to accommodate more fins, then the quantity of fins increases, but heat transfer efficiency deteriorates due to rising cooling air temperature
Solution Approach 1:
The heat sink is divided into multiple stages with progressively increasing fin heights from intake to exhaust. This segmentation allows each stage to operate at different temperature zones, maintaining heat transfer efficiency while accommodating more total fins in the system.
Solution Approach 2:
Instead of increasing fin quantity through small spacing in a single plane, the design transitions to a multi-dimensional approach by varying fin heights across multiple stages. This dimensional change allows more fins to be accommodated without compromising the heat transfer efficiency of individual fins.
2Quantity of substance
If fin spacing is reduced to accommodate more fins, then the quantity of fins increases, but material usage increases
Solution Approach 1:
Different stages of the heat sink have different fin heights tailored to local temperature conditions. Upstream stages with cooler air have shorter fins, while downstream stages with warmer air have taller fins. This local quality variation optimizes heat transfer at each position while reducing overall material consumption compared to a uniform fin design.
3Ease of manufacture
If uniform fin height is used across all stages, then manufacturing is simplified, but heat removal efficiency deteriorates in downstream regions
Solution Approach 1:
The heat sink transitions from a static, uniform fin design to a dynamic configuration where fin height varies across stages. This dynamic adaptation of fin dimensions to temperature gradients maintains heat removal efficiency throughout the heat sink while remaining manufacturable through standard fabrication processes.
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 enhances heat removal efficiency and reduces material usage while maintaining airflow efficiency, improving the reliability and longevity of computing devices by effectively dissipating waste heat.
Implementation Method 1
heat sinks for data miners that vary in height... force air across heat sinks on the computing device in order to extract and exhaust the waste heat
Data Source
AI summary
A heat sink for cooling computing devices is disclosed. The heat sink includes a plurality of fin stages arranged in spaced relation between an intake side and an exhaust side. The plurality of fin stages each include a plurality of fins extending along a flow direction. At least one of the plurality of fin stages is distinct in fin width and/or fin height from another one of the plurality of fin stages.