Flexible Server Cooling Architecture for Air-to-Liquid Switching
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Solution Overview
Problem
Current server cooling systems are either designed for air or liquid cooling, requiring manufacturers to stock two different models and leading to increased inventory costs when heat density increases, necessitating a switch from air to liquid cooling.
Innovation Solution
A server design that allows configuration for either air or liquid cooling, where a removable fan can be replaced with a heat exchanger to switch between cooling modes, reducing the need for multiple inventory units and enabling in-field cooling configuration changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If servers are designed as either air cooled or liquid cooled models, then manufacturers can provide specialized cooling solutions, but manufacturers must stock two different models leading to increased inventory costs
Solution Approach 1:
The server is designed with a universal cooling architecture that can accommodate both air cooling and liquid cooling configurations using the same server model. The cooling configuration is determined by removable fans versus heat exchangers, allowing a single model to serve multiple cooling purposes.
Solution Approach 2:
The cooling system is designed to be dynamically configurable through removable components. Fans can be removed and replaced with heat exchangers, allowing the server to adapt its cooling mode based on operational requirements without changing the fundamental server model.
2Temperature
If air cooled servers are replaced with liquid cooled servers when heat density increases, then adequate cooling is achieved, but all air cooled servers must be replaced leading to increased costs and downtime
Solution Approach 1:
The server allows dynamic reconfiguration of cooling components in the field. When heat density increases, heat exchangers can be installed by removing fans, enabling the server to transition from air cooling to liquid cooling mode without replacement or downtime.
Solution Approach 2:
The cooling capability is changed by modifying the physical state of the cooling system - replacing air-moving components (fans) with liquid-cooling components (heat exchangers), thereby changing the thermal management parameter from air-based to liquid-based cooling.
3Adaptability or versatility
If manufacturers stock two different server models for air and liquid cooling, then customer cooling needs are met, but inventory costs increase
Solution Approach 1:
A single server model is designed to provide both air cooling and liquid cooling capabilities through configurable components. This universal design eliminates the need for manufacturers to maintain separate inventory stocks for different cooling types.
Solution Approach 2:
The patent merges the functionality of separate air-cooled and liquid-cooled server models into a single unified model. The same server chassis and architecture support both cooling modes, consolidating what were previously two distinct product lines into one.
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
This solution reduces inventory costs and allows users to adapt cooling configurations without replacing servers, addressing the limitations of existing binary cooling system designs.
Implementation Method 1
The removable fan is replaced with a heat exchanger
Data Source
AI summary
A server with a flexible cooling scheme is disclosed. The server comprises a case and a fan. When the server is in a first cooling configuration the fan is configured to force the gas past a first area to be cooled and out to the outside of the case through a second opening in the case. When the server is in a second cooling configuration, the server further comprises a heat exchanger located in the first area and configured to seal the first opening in the case thereby preventing outside gas from entering the first area. When the server is in the second cooling configuration, a sealing device is configured to seal the second opening thereby redirecting the first fan to force the gas past the first area to be cooled and back into the first area, thereby re-circulating the gas inside the case.