Micro-Channel Flat Tube Alignment for Heat Exchanger Assembly

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Solution Overview

Problem

In the production of micro-channel heat exchangers, human errors such as incorrect or reversed installation of micro-channel flat tubes occur, leading to inefficiencies in channel size accuracy and heat exchange performance, which are difficult to detect manually.

Innovation Solution

A method involving a collection assembly that moves along a first direction to collect specific information from micro-channel flat tubes, comparing it with pre-stored data using a controller, and adjusting tube positions based on feedback to correct installation errors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manual assembly and inspection methods are used, then device complexity is reduced, but manufacturing precision and reliability deteriorate due to human errors in installation

Engineering Contradiction:
Improvechannel size accuracyVSAvoidprocessing system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical assembly and inspection with an automated optical measurement system. The sampler moves along the first direction to automatically collect specific information (images) of micro-channel flat tubes, and the controller automatically compares the specific information with pre-stored information to generate feedback information. This substitution of manual mechanical operations with automated optical-electrical systems resolves the contradiction by achieving high manufacturing precision through automation while managing device complexity through integrated control.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables self-inspection and self-correction capabilities. The sampler automatically collects information, the controller compares it with pre-stored data, generates feedback, and the instruction circuit automatically generates adjustment instructions. This self-service mechanism eliminates the need for continuous manual intervention, improving manufacturing precision while keeping the system relatively simple through autonomous operation.

Inventive Principle:
Principle #25Self-service

2Manufacturing precision

If automated sampling and feedback systems are implemented, then manufacturing precision improves, but device complexity increases

Engineering Contradiction:
Improvetube positioning accuracyVSAvoidcontrol system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent divides the control system into distinct functional modules: a sampler for collecting specific information, a controller for comparing information and generating feedback, and an instruction circuit for generating adjustment instructions. Each module performs a specific function, which simplifies the overall system design and maintenance while achieving high manufacturing precision through coordinated operation of these segmented components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system implements a closed-loop feedback mechanism where the sampler collects specific information, the controller compares it with pre-stored information to generate feedback information, and the instruction circuit uses this feedback to generate adjustment instructions. This feedback loop ensures high manufacturing precision by continuously monitoring and correcting tube positions, while the modular feedback structure manages device complexity through systematic information flow.

Inventive Principle:
Principle #23Feedback

3Reliability

If manual inspection is used, then device complexity is low, but reliability deteriorates due to undetected installation errors

Engineering Contradiction:
Improveheat exchange performanceVSAvoiddetection system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces manual visual inspection with an automated optical detection system. The sampler automatically moves along the first direction to collect specific information (images) of micro-channel flat tubes, eliminating human error in detection. The controller automatically processes the images to identify installation errors, significantly improving reliability while the automated nature of the system manages the complexity through integration.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system creates digital copies (images) of the micro-channel flat tubes using the sampler, and then compares these copies with pre-stored reference information. This copying approach allows for precise, repeatable detection without the variability of manual inspection, improving reliability while keeping the detection process systematic and manageable in terms of complexity.

Inventive Principle:
Principle #26Copying

Data Source

PatentUS12383993B2Heat exchanger processing method and heat exchanger processing apparatus
Publication Date: 2025.08.12 SANHUA(HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO LTD
  • US12383993B2 patent drawing
  • US12383993B2 patent drawing
  • US12383993B2 patent drawing

AI summary

A heat exchanger processing method, in which a heat exchanger includes a plurality of micro-channel flat tubes, and the heat exchanger processing method includes: providing a plurality of micro-channel flat tubes, in which each micro-channel flat tube includes a plurality of channels extending in a length direction of the micro-channel flat tube, and the plurality of micro-channel flat tubes are spaced in a first direction; moving a collection assembly starting from an initial position along the first direction to collect specific information of one or more micro-channel flat tubes one by one, and transmitting the specific information to a control assembly; comparing, by the control assembly, the specific information with pre-stored information and generating, based on a comparison result, feedback information; generating, by an instruction assembly based on the feedback information, instruction information; and adjusting a position of a corresponding micro-channel flat tube based on the instruction information.