Modular Indirect Evaporative Cooler Heat Exchanger

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Solution Overview

Problem

Existing indirect evaporative cooler (IEC) systems for data centers are large, bulky, expensive, difficult to install and maintain, and require the entire assembly to be discarded if any part fails a leak test.

Innovation Solution

A modular cooling unit is constructed using overmolded headers and tubes with extended surfaces for watertight connections, allowing for individual module replacement and assembly in various configurations, reducing manufacturing and maintenance costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a one-piece polymer cooling core is used, then the structure is simple and manufacturing is straightforward, but the system becomes large and bulky, difficult to install and service

Engineering Contradiction:
Improvemanufacturing straightforwardnessVSAvoidinstallation and servicing ease
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The cooling core is divided into multiple modular segments that can be independently manufactured, transported, and assembled. Each module contains a portion of the tubes and headers, allowing the system to be constructed from smaller, more manageable units rather than a single large one-piece structure.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If a one-piece polymer cooling core is used, then the structure is simple, but the system becomes expensive to manufacture, operate, and maintain

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidmanufacturing cost efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

By segmenting the cooling core into modular units, each module can be manufactured independently using optimized processes, reducing overall manufacturing complexity and cost. The modular approach allows for parallel production and reduces material waste.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The modular design enables individual modules to be replaced rather than the entire cooling core, reducing maintenance costs and operational downtime. Failed modules can be discarded and replaced with new or refurbished units.

Inventive Principle:
Principle #34Discarding and recovering

3Ease of manufacture

If a one-piece polymer cooling core is used, then the structure is simple, but if any part fails air or water leak tests, the entire assembly has to be removed and discarded

Engineering Contradiction:
Improvestructural simplicityVSAvoidleak test failure consequence
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The cooling core is divided into multiple modular segments with independent leak paths. If one module fails a leak test, only that specific module needs to be replaced rather than the entire cooling core, significantly reducing waste and maintenance costs.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The modular design provides a built-in safety mechanism where leak testing can be performed on individual modules before final assembly. This prevents the need to discard the entire system if a leak is detected in one module.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

4Quantity of substance

If large assemblies are used, then the cooling capacity is sufficient, but the system becomes difficult to install and service

Engineering Contradiction:
Improvecooling capacityVSAvoidinstallation and servicing difficulty
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The cooling core is divided into multiple modular segments that can be independently manufactured, transported, and assembled. Each module contains a portion of the tubes and headers, allowing the system to be constructed from smaller, more manageable units rather than a single large one-piece structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The modular design allows the cooling system to be scaled by adding or removing modules in different configurations, enabling flexible adaptation to various space constraints and cooling requirements without being limited to fixed large assemblies.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 modular approach enables easier installation, reduced costs, and the ability to replace malfunctioning modules without discarding the entire cooling core, improving efficiency and ease of maintenance.

Implementation Method 1

Overmolding may allow the extended surfaces of the plurality of parallel first slots to form over the first ends of the plurality of tubes to create a watertight connection between the first header and the first ends of the plurality of tubes

Methodology Applied
Scientific EffectOvermolding:

Implementation Method 2

applying an adhesive in at least one of the top, bottom, first side, and second side grooves

Methodology Applied
Scientific EffectAdhesion: Adhesive

Implementation Method 3

The at least one spline may be dimensioned to be received and retained by and extend across at least a portion of the top, bottom, first side, and second side grooves

Methodology Applied
Scientific EffectMechanical support: Mechanical Force

Implementation Method 4

The polymer core may include a plurality of tubes that function to exchange heat associated with air coming in from the data center

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Data Source

PatentEP3013495B1Indirect evaporator cooler heat exchanger manufacturing method
Publication Date: 2020.09.23 SCHNEIDER ELECTRIC IT CORP
  • EP3013495B1 patent drawingFigure 1A~1B
  • EP3013495B1 patent drawingFigure 1C
  • EP3013495B1 patent drawingFigure 1D~1F

AI summary

A method for constructing a module of a modular cooling unit includes acquiring a plurality of tubes, each tube having a first end and a second end, and overmolding a first header onto the first ends of the plurality of tubes to form a watertight connection between the first header and the first ends of the plurality of tubes, the first header having a plurality of parallel first slots, each slot of the parallel first slots having an extended surface configured to receive and retain the first end of the tube.