Ceramic Thermal Container With Metal Pipe Sealing for Corrosion Resistance

Solution Overview

Problem

Existing thermal devices using latent heat of phase transformation substances face issues with durability and corrosion resistance, particularly in metal-based designs, limiting their effectiveness and longevity.

Innovation Solution

A thermal device composed of a ceramic container with a metal pipe, utilizing a ceramic structure that includes a communication path sealed by the metal pipe, enhancing durability and corrosion resistance through a non-similar shape design that alleviates stress and maintains sealing properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a metal container is used in a thermal device, then heat conductivity is improved, but durability and corrosion resistance deteriorate

Engineering Contradiction:

Improveheat conductivityVSAvoiddurability and corrosion resistance

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The patent employs a composite structure consisting of a ceramic container (providing durability and corrosion resistance) combined with a metal pipe insert (providing heat conductivity). This composite design allows the system to simultaneously achieve the thermal performance of metal and the reliability of ceramic materials.

Inventive Principle:

Principle #40Composite materials

2Reliability

If a ceramic container is used in a thermal device, then durability and corrosion resistance are improved, but heat conductivity deteriorates

Engineering Contradiction:

Improvedurability and corrosion resistanceVSAvoidheat conductivity

Core Design Contradiction:

ReliabilityVSTemperature

Solution Approach 1:

The patent employs a composite structure consisting of a ceramic container (providing durability and corrosion resistance) combined with a metal pipe insert (providing heat conductivity). This composite design allows the system to simultaneously achieve the thermal performance of metal and the reliability of ceramic materials.

Inventive Principle:

Principle #40Composite materials

3Temperature

If a metal pipe is inserted into a ceramic container, then heat transfer efficiency is improved, but stress concentration and sealing integrity deteriorate

Engineering Contradiction:

Improveheat transfer efficiencyVSAvoidstress concentration and sealing integrity

Core Design Contradiction:

TemperatureVSStrength

Solution Approach 1:

The patent applies local quality by providing a ceramic coating specifically on the metal pipe insert. This localized ceramic layer reduces stress concentration at the metal-ceramic interface and prevents corrosion, while the metal core maintains heat conductivity. The coating is applied only where needed (on the pipe surface) rather than requiring the entire structure to be ceramic.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent employs a composite structure consisting of a ceramic container (providing durability and corrosion resistance) combined with a metal pipe insert (providing heat conductivity). This composite design allows the system to simultaneously achieve the thermal performance of metal and the reliability of ceramic materials.

Inventive Principle:

Principle #40Composite materials

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 ceramic-based thermal device achieves improved durability and corrosion resistance, allowing efficient heat transfer and maintaining sealing integrity across temperature changes, while being thinner and more resistant to stress compared to metal counterparts.

Implementation Method 1

a part of the metal pipe is inserted into the communication path, and another part is closed

Methodology Applied

Scientific EffectSealing:

Implementation Method 2

The container includes an internal space, an opening portion connected to the internal space, and a communication path connecting the internal space and the opening portion

Methodology Applied

Scientific EffectHeat conduction: Conduction (thermal)

Data Source

PatentUS20250354759A1Thermal device

Publication Date: 2025.11.20 KYOCERA CORP

AI summary

A thermal device according to the present disclosure includes a ceramic container, a fluid, and a metal pipe. The container includes an internal space, an opening portion connected to the internal space, and a communication path connecting the internal space and the opening portion. The fluid is located in the internal space. A part of the metal pipe is inserted into the communication path, and another part is closed.