Cooling system and cooling method

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Solution Overview

Problem

Conventional cooling systems for server rooms face challenges in maintaining operational temperatures when a local air conditioning unit fails, leading to reduced cooling capacity and potential server shutdowns or performance curtailment.

Innovation Solution

A cooling system comprising a duct, a cooler, a monitoring device, and a duct adjustment device that redirects air flow when an abnormality is detected, preventing hot air from being recirculated and ensuring continuous cooling by drawing in cooler air from the server room.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a local air conditioning unit fails, then the cooling capacity for servers is reduced, but the server operational temperature cannot be maintained

Engineering Contradiction:
Improvecooling capacityVSAvoidserver operational temperature
Core Design Contradiction:
ReliabilityVSTemperature

Solution Approach 1:

The patent merges the local air conditioning unit's cooling function with the server room air conditioning system by redirecting the duct to supply cooled air from the central system when the local unit fails. This combination ensures continuous cooling capacity despite the local unit malfunction.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The monitoring device detects abnormalities in the local air conditioning unit before complete failure occurs, and the duct adjustment device proactively redirects the duct to the alternative air source. This preliminary action prevents temperature rise and maintains server operational temperature.

Inventive Principle:
Principle #10Preliminary action

2Device complexity

If the duct continues to supply air to the intake side during abnormality, then the system structure remains simple, but hot air is recirculated to the server

Engineering Contradiction:
Improveduct control systemVSAvoidhot air recirculation
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The monitoring device continuously monitors the cooling state of the local air conditioning unit and provides feedback to the duct adjustment device. When an abnormality is detected, the feedback triggers the duct redirection to prevent hot air recirculation, and when normal operation resumes, the duct returns to its original position.

Inventive Principle:
Principle #23Feedback

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 effectively suppresses functional degradation of servers due to reduced cooling capacity by preventing hot air recirculation and ensuring continuous cooling, even during local air conditioning unit failures.

Implementation Method 1

a cooler that is provided in the duct and that cools the air

Methodology Applied
Scientific EffectHeat transfer: Convection

Data Source

PatentUS20240142122A1Cooling system and cooling method
Publication Date: 2024.05.02 NEC CORP
  • US20240142122A1 patent drawing
  • US20240142122A1 patent drawing
  • US20240142122A1 patent drawing

AI summary

The cooling system includes a duct that draws in air that is drawn in from an intake side of a cooling target, which is disposed in a room adjusted to a predetermined temperature, that absorbs the heat of the cooling target, and that is exhausted from an exhaust side of the cooling target, and that guides the air to the intake side; a cooler that is provided in the duct and that cools the air; a monitoring device that monitors a cooling state of at least one of the cooling target and the cooler; and a duct adjustment device that operates the duct to guide the air in the duct in a direction different from a direction toward the intake side when the monitoring device detects an abnormality in the cooling state.