Magnetically Locking Insulating Tank Casing for Tool-Free Assembly

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Solution Overview

Problem

Existing multi-part insulating tank enclosures are cumbersome to assemble and disassemble, lack sufficient thermal insulation, fail to meet eco-design and recycling principles, and do not provide flexibility in appearance or structural rigidity.

Innovation Solution

A multi-part insulating enclosure with magnetically locking assembly means on the lateral edges of side wall parts, incorporating vacuum insulation panels and compressible materials, allowing for easy assembly and disassembly without tools, optimized packaging, and enhanced thermal insulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If traditional mechanical fastening methods are used to join side wall sections, then structural strength is improved, but assembly and disassembly become cumbersome and time-consuming

Engineering Contradiction:
Improvejoint strengthVSAvoidassembly ease
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The patent replaces traditional mechanical fastening systems (screws, bolts, clips) with a magnetic coupling system. Magnets embedded in complementary joining edges of side wall sections provide automatic attraction and secure joining without mechanical fasteners, enabling tool-free assembly and disassembly while maintaining structural integrity

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

Solution Approach 2:

The magnetic joining system is self-aligning and self-securing. When side wall sections are brought near each other, the magnetic force automatically guides them into proper alignment and secures the joint without requiring manual fastening operations, making the assembly process intuitive and effortless

Inventive Principle:
Principle #25Self-service

2Adaptability or versatility

If multiple separate parts are used to construct the insulating enclosure, then adaptability and ease of packaging are improved, but the number of assembly steps and potential leakage points increase

Engineering Contradiction:
Improvepackaging optimizationVSAvoidnumber of parts
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The insulating enclosure is divided into a limited number of modular side wall sections that can be packaged efficiently and assembled systematically. This segmentation balances the benefits of compact packaging with the need to minimize the number of joints and assembly steps, reducing complexity while maintaining adaptability

Inventive Principle:
Principle #1Segmentation

3Strength

If the insulating enclosure is designed as a fixed permanent structure, then structural rigidity is improved, but maintenance access and recyclability are reduced

Engineering Contradiction:
Improvestructural rigidityVSAvoidmaintenance access
Core Design Contradiction:
StrengthVSEase of repair

Solution Approach 1:

The enclosure transitions from a fixed permanent structure to a dynamic reversible structure. The magnetic joints provide stable, rigid connections during normal operation but allow for easy separation when needed, enabling maintenance access and recyclability without compromising structural integrity during use

Inventive Principle:
Principle #15Dynamics

4Ease of manufacture

If traditional insulation materials and loose wrapping are used, then ease of manufacture is improved, but thermal insulation performance deteriorates due to air circulation by convection

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidthermal insulation performance
Core Design Contradiction:
Ease of manufactureVSLoss of energy

Solution Approach 1:

The patent employs a continuous compressible material layer that forms a tight conformal barrier between the tank and insulating enclosure. This flexible membrane eliminates air gaps and prevents convective air circulation, significantly improving thermal insulation performance while maintaining ease of installation

Inventive Principle:
Principle #30Flexible shells and thin films

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

Facilitates easy assembly and disassembly, provides superior thermal insulation, aligns with eco-design, and offers flexibility in appearance and structural rigidity while ensuring recyclability.

Implementation Method 1

each assembly edge of a side wall part comprises at least two magnetically locking assembly means cooperating respectively with at least two corresponding complementary magnetically locking assembly means

Methodology Applied
Scientific EffectMagnetic locking: Magnetism

Implementation Method 2

which prevents air circulation by convection between the tank and the insulating enclosure

Methodology Applied
Scientific EffectConvection prevention: Convection

Data Source

PatentEP4656966A1Thermally insulating tank casing and tank device comprising such a casing
Publication Date: 2025.12.03 VIESSMANN CLIMATE SOLUTIONS SE
  • EP4656966A1 patent drawingFigure 1
  • EP4656966A1 patent drawingFigure 2
  • EP4656966A1 patent drawingFigure 3

AI summary

The invention relates to an insulating casing (1) for a tank (2) comprising at least two complementary side wall sections (3), joined together by butting their opposite lateral edges (31, 32) to form a hollow cylindrical body. The aforementioned sections (3) together constitute an insulating shell, with the lateral assembly edges (31, 32) of the side wall sections (3) extending along the longitudinal direction (DL) of the cylindrical body. The insulating casing (1) is characterized in that each assembly edge (31, 32) of a side wall section (3) has at least two magnetically locking assembly means (311 or 321) cooperating respectively with at least two corresponding complementary magnetically locking assembly means (321 or 311) present on the assembly edge (32, 31) of the other side wall section (3) with which it is butted together.