Spiral finned condenser

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Solution Overview

Problem

Existing spiral finned condensers face issues with inefficiency in heat dissipation due to fin damage and deformation caused by direct clamping, leading to reduced cooling performance and increased costs associated with larger volumes.

Innovation Solution

A spiral finned condenser design featuring a wavy inner fin structure and smooth outer fin for uniform heat dissipation, along with a fixing bracket that clamps onto the condensing pipe rather than the fins, ensuring stability and preventing deformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of stationary object

If a small condenser is adopted, then volume and cost are reduced, but dissipation performance degrades

Engineering Contradiction:
ImprovevolumeVSAvoiddissipation performance
Core Design Contradiction:
Volume of stationary objectVSProductivity

Solution Approach 1:

The patent transitions from traditional linear or planar fin arrangements to a three-dimensional spiral configuration. The condensing pipe forms a spiral structure with multiple loops, and the fins wrap around the pipe in a spiral pattern, utilizing spatial volume more efficiently. This dimensional change allows the compact condenser to achieve sufficient heat dissipation surface area within a reduced volume, resolving the contradiction between small size and dissipation performance.

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

2Ease of manufacture

If direct clamping is used to fix the condenser, then assembly is simplified, but fin damage and deformation occur

Engineering Contradiction:
Improveassembly simplicityVSAvoidfin integrity
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent introduces a fixing bracket as an intermediary component between the clamping mechanism and the fins. The bracket is designed to clamp onto the condensing pipe rather than directly contacting the fins, thereby transmitting fixing forces away from the delicate fin structures. This intermediary element enables secure assembly while protecting fin integrity, resolving the contradiction between assembly simplicity and fin reliability.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of manufacture

If uniform fin structure is used, then manufacturing is simplified, but heat dissipation efficiency is reduced

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidheat dissipation efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The patent implements non-uniform fin spacing and dimensions optimized for different locations along the spiral pipe. Fins closer to the pipe center have different characteristics than those on outer loops, where spacing and dimensions are adjusted to account for variations in heat transfer conditions and airflow patterns. This localized optimization enhances overall heat dissipation efficiency while remaining compatible with manufacturing processes, resolving the contradiction between manufacturing simplicity and heat dissipation performance.

Inventive Principle:
Principle #3Local quality

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 design reduces volume, lowers costs, enhances heat exchange efficiency, and maintains fin integrity under pressure, ensuring effective heat dissipation and preventing deformation, thus improving cooling performance and expanding application possibilities.

Implementation Method 1

an inner side of the fin is connected to the condensing pipe and has a wavy structure, and an outer side of the fin is in a smooth structure

Methodology Applied
Scientific EffectHeat exchange: Conduction (thermal)

Implementation Method 2

a fixing bracket that clamps onto the condensing pipe rather than the fins, ensuring stability and preventing deformation

Methodology Applied
Scientific EffectMechanical constraint: Mechanical Force

Data Source

PatentEP3502588B1Spiral finned condenser
Publication Date: 2022.09.28 CHANGZHOU CHANGZHENG HEAT EXCHANGER TECH
  • EP3502588B1 patent drawingFigure 1
  • EP3502588B1 patent drawingFigure 2
  • EP3502588B1 patent drawingFigure 3~4

AI summary

A spiral finned condenser is provided, which comprises: a condensing pipe and a fin; the fin is spirally wound on a surface of the condensing pipe; the condensing pipe forms a cubic structure by means of a plurality of turns and bends. The condenser further comprises a fixing bracket which is clamped and fixed on the condensing pipe. The condenser has the advantages of having a small size, a compact structure and good cooling effects.