Vacuum Insulation Envelope Bag for Complex Container Shapes

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Solution Overview

Problem

Existing vacuum insulation bodies face challenges in maintaining vacuum tightness and longevity due to difficulties in reliably attaching diffusion-tight envelopes to complex container shapes, leading to potential damage and reduced useful life.

Innovation Solution

A prefabricated envelope or partial bag is designed to match the geometry of the envelope body, allowing for easy and secure attachment by being larger or more contoured to fit over the body, reducing tension and risk of damage, and using high-barrier films for vacuum tightness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a diffusion-tight envelope is attached to an envelope body with complex geometry, then vacuum tightness can be achieved, but the attachment process becomes difficult and the envelope is prone to damage

Engineering Contradiction:

Improvevacuum tightnessVSAvoidattachment process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The envelope is prefabricated as a bag or partial bag with geometry adapted to the envelope body before attachment. This preliminary shaping allows the envelope to be customized to match complex container geometries, making the subsequent attachment process easier and more reliable while maintaining vacuum tightness.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The envelope is designed as a flexible bag or partial bag that can be stretched or expanded during attachment to conform to the envelope body's complex geometry. This flexibility enables reliable attachment to irregular surfaces without causing damage to the envelope material.

Inventive Principle:

Principle #30Flexible shells and thin films

2Ease of operation

If the envelope geometry is adapted to match the envelope body shape, then attachment is simplified and damage risk is reduced, but the envelope manufacturing process becomes more complex

Engineering Contradiction:

Improveattachment simplicityVSAvoidenvelope manufacturing

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The envelope is prefabricated with the appropriate geometry in advance, allowing complex shaping to be done during manufacturing rather than during attachment. This transfers the complexity to the manufacturing stage while simplifying the attachment operation.

Inventive Principle:

Principle #10Preliminary action

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 design enhances the longevity and usability of vacuum insulation bodies by simplifying attachment, reducing the risk of damage, and ensuring high vacuum tightness, even on irregular surfaces, thereby extending the useful life of vacuum-insulated containers like refrigerators and freezers.

Implementation Method 1

at least one diffusion-tight envelope (20), which at least partly adjoins the envelope body (10)

Methodology Applied

Scientific EffectDiffusion barrier: Diffusion Barrier

Implementation Method 2

the principle of vacuum heat insulation has long since been known from the prior art

Methodology Applied

Scientific EffectVacuum insulation: Vacuum

Data Source

PatentUS10088221B2Vacuum insulation body

Publication Date: 2018.10.02 LIEBHERR HAUSGERATE LIENZ GMBH

AI summary

The present invention relates to a vacuum insulation body, comprising at least one envelope body and at least one diffusion-tight envelope which at least partly adjoins the envelope body, wherein the envelope at least partly is present as prefabricated bag or partial bag which in its geometry is completely or largely adapted to the shape of the envelope body.