Server Cooling Circulation Loop via Air Guide Hoods
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Solution Overview
Problem
Conventional server cabinet cooling systems fail to provide even heat radiation, leading to instability and reduced performance due to hot air accumulation, and require excessive space for cold and hot channels, limiting the number of servers that can be efficiently housed.
Innovation Solution
A cooling circulation system comprising a cabinet assembly with first and second fan modules and air guide hoods that form a cooling circulation loop, allowing for independent cooling operations without additional channels, maximizing server density and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional cooling air conditioning system is used in machine room, then heat radiation can be performed, but cold air cannot sufficiently flow to each corner, causing hot air accumulation and system instability
Solution Approach 1:
The invention divides the cooling system into modular rack-level units with dedicated fan modules installed on each rack. Each rack has its own cooling circulation system with fan modules that independently manage heat dissipation for that specific rack, preventing hot air accumulation and ensuring stable operation of each server unit.
2Temperature
If fan module is installed on top of rack to draw hot air outward, then hot air discharge is achieved, but flow path is blocked by servers and bottom hot air cannot be effectively cooled
Solution Approach 1:
The invention transitions from single-direction (top-only) hot air discharge to multi-directional cooling by installing fan modules on multiple surfaces of each rack (top, bottom, front, back). This enables hot air to be discharged from multiple dimensions simultaneously, ensuring comprehensive cooling throughout the rack including the bottom region that was previously ineffective.
3Temperature
If fan module is installed on back side surface to guide airflow through channels, then hot air accumulation at bottom is prevented, but airflow cannot ensure reaching main boards and heat radiation is uneven
Solution Approach 1:
The invention applies different cooling strategies to different regions of the rack based on local heat generation characteristics. Fan modules are strategically positioned on various surfaces (top, bottom, front, back) to create localized cooling zones that direct airflow precisely where heat is generated, ensuring uniform heat radiation across all server components including main boards.
4Reliability
If cold and hot channels are designed inside container machine room to form closed-loop cooling paths, then stable flow field is achieved, but server rack loading capacity is limited and more machine rooms are required
Solution Approach 1:
The invention enables each rack to be self-sufficient in its cooling operation through integrated fan modules that create independent cooling circulation systems. Each rack manages its own heat dissipation without relying on centralized cold and hot channels, eliminating the need for extensive channel infrastructure and maximizing the number of racks that can be loaded into a single container machine room.
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 system achieves even heat radiation and improved operational performance by forming a cooling circulation loop within the cabinet assembly, enabling maximum server loading and efficient use of space without the need for extra channels.
Implementation Method 1
a plurality of heat sink fans is installed on the top of the rack, so as to draw the hot air inside the server rack to the outside
Implementation Method 2
an airflow generated by the fan module respectively passes through channels between main boards of the servers, and then is discharged from a front side surface of the rack
Data Source
AI summary
A cooling circulation system of a server includes a cabinet assembly, a plurality of first fan modules, a plurality of second fan modules, and two air guide hoods. The first fan modules and the second fan modules are disposed on the cabinet assembly. The first fan modules blow a first airflow towards a first direction, and the second fan modules blow a second airflow towards a second direction. The air guide hoods are respectively installed on two ends of the cabinet assembly. The first airflow and the second airflow join each other through the air guide hoods, so as to form a cooling circulation loop inside the cabinet assembly.