Insulated Flow Pipe Structure for Condensation Drainage

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Solution Overview

Problem

In flow pipes, water droplets generated due to dew condensation between the pipe body and the heat insulator can lead to contamination and deterioration, as they often remain between the two components.

Innovation Solution

A flow path structure is integrated into the heat insulator's outer or inner peripheral surface, guiding water droplets to an opening portion for discharge outside, thereby preventing them from staying between the pipe body and the heat insulator, and enhancing heat insulation performance using materials like aerogel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a heat insulator is arranged on the outer periphery of the pipe body, then heat insulation performance is improved, but water droplets generated by dew condensation remain between the pipe body and heat insulator causing contamination and deterioration

Engineering Contradiction:
Improveheat insulation performanceVSAvoidcontamination and deterioration from water droplets
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The harmful water droplets are extracted from the space between the pipe body and heat insulator by providing a discharge path through the heat insulator. The heat insulator includes through-holes or grooves that allow water droplets to be removed from the enclosed space, preventing contamination and deterioration of the pipe body.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The heat insulator acts as an intermediary structure that both insulates heat and provides a controlled path for water droplet discharge. By incorporating through-holes or grooves in the heat insulator, it mediates between the need for thermal insulation and the need to prevent water accumulation, allowing water to pass through without compromising the insulating function.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Strength

If the heat insulator is arranged on the inner peripheral side of the pipe body, then the heat insulator can be protected by the pipe body, but the same water droplet accumulation problem occurs

Engineering Contradiction:
Improveprotection of heat insulatorVSAvoidwater droplet accumulation
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

Water droplets are extracted from the space between the pipe body and heat insulator through through-holes or grooves provided in the heat insulator. This allows water droplets to be removed from the protected internal space, preventing accumulation and related harmful effects while maintaining the protective arrangement.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The heat insulator serves as an intermediary structure that provides both protection (when arranged internally) and water drainage functionality. The through-holes or grooves in the heat insulator create a controlled pathway that allows water to pass through the insulating layer without compromising either the protection function or the drainage function.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Temperature

If conventional heat insulation is used without water discharge paths, then heat insulation is provided, but water droplets remain and cause contamination

Engineering Contradiction:
Improveheat insulationVSAvoidprevention of contamination and deterioration
Core Design Contradiction:
TemperatureVSReliability

Solution Approach 1:

The heat insulator is segmented by providing through-holes or grooves that divide the continuous insulating material into sections. This segmentation creates multiple discharge paths for water droplets, allowing water to be removed from different locations while maintaining thermal insulation through the remaining insulating material.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Water droplets are extracted from the system by providing discharge paths through the heat insulator. The through-holes or grooves enable water to be removed from the space between the pipe body and heat insulator, preventing accumulation and improving reliability while maintaining heat insulation performance.

Inventive Principle:
Principle #2Taking out (Extraction)

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 solution effectively prevents contamination and deterioration by ensuring water droplets are discharged, maintaining the integrity of the flow pipe and improving heat insulation, which reduces thermal deformation and allows for a more compact design of grinding machines.

Implementation Method 1

the outer peripheral surface has a flow path structure configured to form a flow path that guides a water droplet generated between the heat insulator and the pipe body to the opening portion

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

a flow path that guides a water droplet generated between the heat insulator and the pipe body to the opening portion

Methodology Applied
Scientific EffectGravity: Gravitation

Implementation Method 3

the heat insulator may include an aerogel

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Implementation Method 4

the heat insulator may include an aerogel

Methodology Applied
Scientific EffectAerogel: Aerogels

Data Source

PatentUS11649918B2Flow pipe
Publication Date: 2023.05.16 JTEKT CORP
  • US11649918B2 patent drawing
  • US11649918B2 patent drawing
  • US11649918B2 patent drawing

AI summary

There is provided a flow pipe including: a pipe body including a side wall having an opening portion; and a heat insulator arranged at an inner peripheral side of the pipe body and having a flow path through which a fluid flows. The heat insulator has an outer peripheral surface facing with the side wall, and the outer peripheral surface has a flow path structure configured to form a flow path that guides a water droplet generated between the heat insulator and the pipe body to the opening portion.