Passive Flow Rate Adapter Using Thermal Gradient Actuation
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Solution Overview
Problem
Conventional liquid cooling solutions for IT equipment require complex feedback loops, additional control boards, sensors, and motors to adjust coolant flow rates based on temperature, leading to high costs and reliability issues.
Innovation Solution
A passive, on-demand flow rate adapter that uses a temperature gradient to mechanically control the flow rate of a working fluid through chambers, leveraging a flexible diaphragm and gate to adjust flow based on thermal loads without active control components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional feedback loops with sensors and motors are used to control flow rate, then flow rate adjustment capability is improved, but device complexity and cost increase
Solution Approach 1:
The flow adapter autonomously adjusts flow rate by utilizing the temperature gradient of the working fluid itself to actuate the flexible diaphragm and gate mechanism, without requiring external sensors, control boards, or motors. The system serves itself by using its own thermal environment as the actuation source.
Solution Approach 2:
The patent replaces complex electromechanical control systems (sensors, motors, control boards) with a passive thermal-mechanical system. The temperature gradient directly drives flexible diaphragms that mechanically adjust the gate position, substituting electronic control with thermal-mechanical actuation.
2Measurement precision
If conventional feedback loops with additional control equipment are used, then flow rate control precision is improved, but reliability deteriorates
Solution Approach 1:
The system eliminates multiple control components that could fail by using the working fluid's own temperature gradient to directly actuate the flow control mechanism. Fewer components mean fewer potential failure points while maintaining precise flow rate adjustment.
Solution Approach 2:
The patent extracts and removes unnecessary control components (sensors, control boards, motors) from the system, retaining only the essential thermal-mechanical actuation elements. This simplification improves reliability by eliminating potential failure sources while preserving flow control functionality.
3Device complexity
If passive thermal-mechanical system is used, then device complexity is reduced, but flow rate adjustment range may be limited
Solution Approach 1:
The flow adapter is divided into multiple independent chambers (first, second, third, fourth chambers) with separate flexible diaphragms for each. This segmentation allows each chamber to independently respond to temperature gradients and adjust flow rates, providing a cumulative adjustment range that exceeds what a single chamber could achieve.
Solution Approach 2:
The patent transitions from a single-dimensional flow control approach to a multi-dimensional system with multiple chambers arranged in series. Each chamber adds another dimension of flow rate adjustment, enabling a broader overall adjustment range while maintaining passive thermal-mechanical operation.
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
Optimizes coolant flow rates for individual IT equipment, simplifies manifold design, enhances assembly efficiency, and reduces power consumption by eliminating the need for active control systems, while being compatible with existing cooling systems.
Implementation Method 1
a gate movable within the fourth chamber based at least in part on a temperature gradient between working fluid flowing through the first and fourth chambers
Data Source
AI summary
A flow rate adapter includes an enclosure defining an interior, a first partition separating the interior into first and second chambers, a second partition separating the interior into third and fourth chambers, and a flexible diaphragm separating the second and third chambers. Each chamber is fluidly isolated from one another. The second and third chambers are positioned between the first and fourth chambers with the second chamber being positioned adjacent to the first chamber and the third chamber being positioned adjacent to the fourth chamber. The second and third chambers are positioned adjacent to one another. The flow rate adapter includes a gate coupled with the flexible diaphragm. A temperature gradient between working fluid flowing through the first and fourth chambers causes the flexible diaphragm to flex, which moves the gate within the fourth chamber to control the flow rate of the working fluid.