Distributive Water-Cooled Heat Dissipation for Server Racks

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Solution Overview

Problem

Conventional water-cooled heat dissipation systems for server racks face uneven heat dissipation due to varying pipeline lengths, leading to reduced fluid flow for servers with the longest connections, necessitating either reduced cooling effectiveness or increased pump costs.

Innovation Solution

A water-cooled pressurized distributive heat dissipation system with a water tank, distributing ducts, branch modules, and converging ducts, where each server has a branch pump and water block, ensuring even fluid flow and distribution along the ranging direction, and optionally connecting multiple servers in a circulating pipeline.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a master pump is used to drive working fluid through flow distribution to water blocks on heat sources, then cooling effect is achieved, but uneven flow distribution occurs due to different pipeline lengths

Engineering Contradiction:

Improveheat dissipation effectVSAvoidworking fluid flow

Core Design Contradiction:

TemperatureVSQuantity of substance

Solution Approach 1:

The system divides the centralized master pump approach into multiple independent branch pumps, one for each server or group of servers. Each branch pump independently controls the flow of working fluid to its designated water blocks, eliminating the flow distribution unevenness caused by varying pipeline lengths in a centralized system.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each branch module is designed with local flow control capabilities through individual branch pumps. This allows each server or server group to receive the appropriate amount of working fluid regardless of its position in the rack, achieving uniform cooling effect across all servers with different pipeline lengths.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If pipeline length is increased to reach servers with longest distance, then all servers can be connected, but flow of working fluid decreases for distant servers

Engineering Contradiction:

Improveserver coverageVSAvoidworking fluid flow

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The system segments the cooling network into multiple independent branches, each with its own pump. This allows servers at different distances from the water tank to be served by locally positioned branch pumps, eliminating the flow reduction problem caused by long pipelines in a centralized distribution system.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Branch pumps act as intermediary devices between the water tank and individual servers. Each branch pump compensates for pipeline length differences by providing localized pressurization, ensuring that servers at the longest distance receive the same working fluid flow as those closer to the water tank.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Temperature

If a larger pump is used to satisfy the lowest effect of heat dissipation, then even cooling is achieved, but costs increase

Engineering Contradiction:

Improveheat dissipation uniformityVSAvoidpump power

Core Design Contradiction:

TemperatureVSPower

Solution Approach 1:

The system replaces a single large master pump with multiple smaller branch pumps. Each branch pump only needs to provide sufficient flow for its designated server or server group, rather than overcoming the total system resistance. This segmentation reduces the power requirement of each pump while achieving uniform cooling across all servers.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system changes the operating parameters of the pumping system by using multiple low-power branch pumps instead of one high-power master pump. Each branch pump operates at optimized flow and pressure levels appropriate for its local server requirements, reducing overall energy consumption while maintaining cooling uniformity.

Inventive Principle:

Principle #35Parameter changes

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 system achieves stable and even fluid flow and heat dissipation across all servers, reducing the need for high-power pumps and minimizing costs while maintaining effective cooling.

Implementation Method 1

water-cooled pressurized distributive heat dissipation system

Methodology Applied

Scientific EffectFluid pressure: Pressure Increase

Implementation Method 2

flow distribution approach to implement an effect of even flow

Methodology Applied

Scientific EffectFluid flow:

Implementation Method 3

water block in a corresponding one of the servers

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 4

dissipating heat of servers in the rack

Methodology Applied

Scientific EffectHeat transfer:

Implementation Method 5

water-cooled heat dissipation system

Methodology Applied

Scientific EffectConvection: Convection

Implementation Method 6

effect of heat dissipation or cooling

Methodology Applied

Scientific EffectThermal energy transfer:

Data Source

PatentUS11044833B2Water-cooled pressurized distributive heat dissipation system for rack

Publication Date: 2021.06.22 TAIWAN MICROLOOPS CORP

AI summary

A water-cooled pressurized distributive heat dissipation system used for dissipating heat of servers in the rack is provided. The servers are fixed in the rack in a ranging direction. The system includes a water tank having a distributing duct, branch modules separately corresponding to the servers and a converging duct. Each branch module has a branch pump and a water block in a corresponding one of the servers. The branch pump of each branch module connects between the distributing duct and the water block. The converging duct connects to the water blocks in the ranging direction.