Microchannel Heat Exchanger Tube Support Bracket

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Solution Overview

Problem

Folded or ribbon bent microchannel heat exchangers lack effective support systems, as traditional refrigerant manifolds and frames are not always cost-effective or feasible, leading to potential instability and increased costs.

Innovation Solution

A support system comprising a base with fingers extending into gaps between heat exchange tube segments at the bend, secured by brazing or adhesives, providing structural support and preventing relative movement during the bending process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional refrigerant manifolds are used for support, then the heat exchanger can be supported, but folded or ribbon bent heat exchangers cannot be effectively supported as they lack manifolds at both ends

Engineering Contradiction:
Improvesupport effectivenessVSAvoidapplicability to folded heat exchangers
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent introduces an intermediary support system consisting of a base and support fingers that engage with the heat exchange tube segments. This intermediary structure enables support for folded and ribbon bent heat exchangers that lack traditional manifold support, while maintaining compatibility with conventional heat exchanger designs.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If frames are used to encapsulate and support the heat exchanger, then support is provided, but the cost increases and feasibility is reduced

Engineering Contradiction:
Improvestructural supportVSAvoidcost effectiveness
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The support system is segmented into a base and multiple support fingers that can be positioned at different locations along the heat exchanger. This segmentation allows for targeted support without requiring a complete frame encapsulation, reducing material costs and manufacturing complexity while maintaining structural integrity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support fingers are positioned to engage with specific heat exchange tube segments at critical locations, particularly at bends. This localized support approach provides necessary structural reinforcement only where needed, rather than requiring comprehensive frame support throughout the entire heat exchanger structure.

Inventive Principle:
Principle #3Local quality

3Stability of the object's composition

If support is positioned at the bend, then stability is enhanced and movement is prevented, but the manufacturing process becomes more complex

Engineering Contradiction:
Improveheat exchanger stabilityVSAvoidsupport system complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The support fingers are designed to engage with the existing heat exchange tube segments, utilizing the heat exchanger's own structure for support rather than requiring additional complex external fixtures. The base and fingers work together as a self-contained support system that leverages the heat exchanger's geometry.

Inventive Principle:
Principle #25Self-service

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 support system enhances the stability and cost-effectiveness of heat exchangers by allowing support from various locations along the tube segments, reducing the need for costly frames and preventing movement issues during the bending process.

Implementation Method 1

secured by brazing or adhesives

Methodology Applied
Scientific EffectBrazing: Brazing

Implementation Method 2

secured by brazing or adhesives

Methodology Applied
Scientific EffectAdhesive bonding: Adhesive

Data Source

PatentUS11982491B2Microchannel heat exchanger tube supported bracket
Publication Date: 2024.05.14 CARRIER CORP
  • US11982491B2 patent drawing
  • US11982491B2 patent drawing
  • US11982491B2 patent drawing

AI summary

A heat exchanger includes a plurality of heat exchange tube segments defining a plurality of fluid pathways therein and a plurality of fins disposed between adjacent heat exchange tube segments of the plurality of heat exchange tube segments. A bend is formed in the plurality of heat exchange tube segments defining a first portion of the heat exchanger located at a first side of the bend, and a second portion of the heat exchanger located at a second side of the bend opposite the first side. A support is positioned at or near the bend, the support including and includes a support base and at least one support finger extending from the support base and into a gap between adjacent heat exchange tube segments of the plurality of heat exchange tube segments.