Modular Heat Exchanger Segmentation for Compressed Air Drying

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Solution Overview

Problem

Existing countercurrent heat exchangers for compressed air drying systems are complex and difficult to assemble, making it hard to identify and repair leaks, leading to high waste and maintenance costs as they are often scrapped when issues arise due to their integrated design.

Innovation Solution

The heat exchanger is designed with independent functional elements such as a cooler/heater, evaporator, and condensate separator, which are constructed and assembled separately, allowing for individual testing and easier maintenance, with conduits connecting these elements externally for improved modularity and assembly control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the heat exchanger is designed as a single integrated block with internal conduits, then the structural compactness is improved, but the ease of repair and leak identification deteriorates

Engineering Contradiction:
Improvestructural compactnessVSAvoidease of repair
Core Design Contradiction:
Volume of moving objectVSEase of repair

Solution Approach 1:

The heat exchanger is divided into separate functional elements (cooler/heater, evaporator, condensate separator) that can be manufactured independently and assembled together. This segmentation allows each element to be tested individually for leaks and seals before final assembly, making repair and maintenance much easier while maintaining compactness through modular integration.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If the heat exchanger is designed as a single integrated block, then the manufacturing simplicity is improved, but the manufacturing precision and quality control deteriorates

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidquality of connections and seals
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

By segmenting the heat exchanger into separate functional elements, each element can be manufactured and tested independently with controlled quality. The connections between elements are made externally accessible, allowing verification of seal quality before final assembly, thus improving overall manufacturing precision while maintaining ease of manufacture through standardized modular components.

Inventive Principle:
Principle #1Segmentation

3Device complexity

If the heat exchanger is designed as a single integrated block, then the device complexity is reduced, but the reliability deteriorates due to inability to identify leak locations

Engineering Contradiction:
Improvestructural simplicityVSAvoidreliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The heat exchanger is segmented into distinct functional elements with external connection points. This segmentation enables systematic leak detection by isolating and testing each element individually, thereby improving reliability by allowing rapid identification and repair of leaks without compromising the overall structural simplicity of the modular design.

Inventive Principle:
Principle #1Segmentation

4Device complexity

If the heat exchanger is designed as a single integrated block, then the assembly process is simplified, but the ease of operation and maintenance deteriorates

Engineering Contradiction:
Improveassembly simplicityVSAvoidease of maintenance
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The heat exchanger uses segmented functional elements that are assembled together with external conduits. This segmentation simplifies maintenance operations by allowing individual elements to be accessed, removed, and replaced independently, while the modular assembly process remains straightforward and standardized.

Inventive Principle:
Principle #1Segmentation

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 design simplifies construction, reduces waste by enabling individual element testing and repair, and enhances the reliability and quality of the heat exchanger, improving the overall production cycle and final product quality.

Implementation Method 1

a cooler/heater; in which the hot and humid compressed air coming from the compressor is cooled and dehumidified

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Implementation Method 2

The evaporator in turn receives at the inlet the pre-cooled air exiting from the cooler/heater and cools it to the desired dew point, through heat exchange with a coolant fluid

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Implementation Method 3

the cold air enters the condensate separator in which the minuscule drops of water that have formed in the evaporator collect on the bottom in the form of water

Methodology Applied
Scientific EffectCondensation: Condensation

Data Source

PatentUS11426694B2Perfected heat exchanger and air drying system using the aforesaid heat exchanger
Publication Date: 2022.08.30 CECCATO ARIA COMPRESSA SRL
  • US11426694B2 patent drawing
  • US11426694B2 patent drawing
  • US11426694B2 patent drawing

AI summary

A heat exchanger includes: a cooler/heater, an evaporator and a condensate separator, provided with inlet lines and outlet lines through which flows develop in countercurrent to each other for obtaining through the cooler/heater an incoming flow of hot and humid air and an outgoing flow of cooled cold air. The cooler/heater, the evaporator and the condensate separator are independent units from each other joined by a connection for defining a single-block body on whose outer surface inlet lines and outlet lines are provided. A first conduit places in communication the outlet line with the second inlet line; a second conduit places in communication the first outlet line with the first inlet line; and a third conduit places in communication the first outlet line with the first inlet line. The conduits project from the outer surface that delimits the single-block body.