Elastic Baffle Blades for Hybrid Cooling Airflow Management

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Solution Overview

Problem

Hybrid cooling systems for electronic equipment face inefficiencies due to unmanaged airflow interactions between air cooling and liquid cooling, leading to decreased performance and scalability issues, as existing solutions like air baffles are often customized and not flexible enough to adapt to different server chassis and layouts.

Innovation Solution

A baffle unit with elastic members and rotatable blades that adjust airflow resistance dynamically in response to aerodynamic forces, allowing for optimized airflow management and flexible integration across various server chassis and layouts, while minimizing thermal impact on liquid cooling devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional air baffles are used to manage airflow, then airflow direction can be controlled, but each baffle must be customized for specific server chassis and internal layouts, reducing scalability

Engineering Contradiction:
Improveairflow management capabilityVSAvoidscalability across different server configurations
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The baffle system is divided into multiple adjustable segments or blades that can be independently positioned. This segmentation allows the same baffle unit to be configured for different airflow patterns and server layouts without requiring complete customization of the entire baffle structure, thereby improving scalability while maintaining airflow management capability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The baffle incorporates movable and adjustable components that can be dynamically repositioned to adapt to different server chassis and internal layouts. This dynamic adjustability allows a single baffle design to serve multiple configurations, resolving the contradiction between specialized airflow control and scalability.

Inventive Principle:
Principle #15Dynamics

2Loss of energy

If high thermal resistance material is added to prevent heat loss from liquid cooling to air cooling, then heat loss is reduced, but the system becomes less flexible and airflow management is not improved

Engineering Contradiction:
Improveheat loss from liquid coolingVSAvoidsystem flexibility and airflow management
Core Design Contradiction:
Loss of energyVSAdaptability or versatility

Solution Approach 1:

The baffle acts as an intermediary physical barrier between the liquid cooling and air cooling systems. Instead of using thermal resistance materials that block heat transfer, the baffle spatially separates the two cooling domains, preventing unwanted thermal interaction while maintaining system flexibility and enabling active airflow management through its adjustable structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Temperature

If air cooling and liquid cooling are used together in hybrid cooling, then thermal capability is improved, but the two cooling methods can work against each other, decreasing overall system efficiency

Engineering Contradiction:
Improvethermal cooling capabilityVSAvoidsystem efficiency
Core Design Contradiction:
TemperatureVSLoss of energy

Solution Approach 1:

The baffle extracts and redirects airflow away from the liquid cooling components (cold plates). By taking the airflow out of the liquid cooling zone and redirecting it through dedicated air cooling paths, the system prevents air from stealing heat from the liquid-cooled components, thereby eliminating the negative interaction between the two cooling methods and improving overall system efficiency.

Inventive Principle:
Principle #2Taking out (Extraction)

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 enhances cooling efficiency by dynamically adjusting airflow resistance and improving airflow management, ensuring better heat transfer to liquid cooling systems and reducing the need for customized hardware designs, thus increasing scalability and reducing implementation costs.

Implementation Method 1

each baffle blade rotates about and deforms the elastic member in response to aerodynamic forces applied to the one or more baffle blades

Methodology Applied
Scientific EffectAerodynamic forces: Drag

Implementation Method 2

each baffle blade rotates about and deforms the elastic member

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 3

prevent loss of heat from the liquid system to the air

Methodology Applied
Scientific EffectThermal convection: Convection

Data Source

PatentEP4002974B1Device for airflow management and cooling improvement in hybrid-cooled electronics
Publication Date: 2023.08.30 BAIDU USA LLC
  • EP4002974B1 patent drawingFigure 1A~1B
  • EP4002974B1 patent drawingFigure 1C~2A
  • EP4002974B1 patent drawingFigure 2B~3

AI summary

A baffle unit (100, 150, 408, 502a, 502b, 602a, 602b) includes an elastic member (108, 156) and one or more baffle blades (104, 106, 154). Each baffle blade (104, 106, 154) has a first edge (104a, 106a, 154a) and a second edge (104b, 106b, 154b), and each baffle blade (104, 106, 154) has its first edge (104a, 106a, 154a) coupled to the elastic member (108, 156), so that each baffle blade (104, 106, 154) rotates about and deforms the elastic member (108, 156) in response to aerodynamic forces applied to the one or more baffle blades (104, 106, 154).