Support beam for a refrigerator
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Solution Overview
Problem
Existing refrigerator support beams face challenges due to the thermal conductivity of metal, which reduces efficiency and allows condensation, and the difficulty in recycling due to mixed materials.
Innovation Solution
A support beam made from a single material, such as polypropylene, with a foam filler providing insulation and reduced thermal conductivity, and a rigid outer shell for structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal strut is used for structural support, then strength and rigidity are improved, but thermal conductivity increases causing reduced refrigerator efficiency and condensation formation
Solution Approach 1:
The patent employs a composite structure consisting of a metal strut core providing structural strength, surrounded by an insulating material layer (such as foam or plastic) that reduces thermal conductivity. This composite design allows the support beam to maintain mechanical integrity while minimizing heat transfer between the interior and exterior of the refrigerator.
2Reliability
If multiple materials (metal and plastic coating) are used to achieve required properties, then strength and insulation are improved, but recyclability deteriorates due to separation difficulty
Solution Approach 1:
The patent addresses recyclability by designing the insulating material layer to be removable or separable from the metal core, enabling the recovery and recycling of the metal component. Alternatively, the design allows for the entire composite beam to be processed as a single unit for recycling, reducing the complexity of material separation compared to traditional coated metal struts.
3Loss of energy
If a filler material is added to the support beam, then insulation performance is improved, but device complexity increases
Solution Approach 1:
The patent utilizes porous or cellular filler materials (such as foam) that provide effective thermal insulation with relatively low density and simplified integration into the support beam structure. The cellular structure of these materials creates air pockets that trap heat, achieving good insulation performance without significantly increasing the overall complexity of the beam design.
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 solution enhances insulation, reduces thermal conductivity, and allows for easy recycling, while maintaining structural rigidity and supporting the refrigerator's external structure and contents.
Implementation Method 1
The use of a filler, particularly a foam or other cellular structure, provides enhanced insulation and reduced thermal conductivity
Data Source
AI summary
A support beam for a refrigerator includes an outer shell defining a cavity, or a spine with a keyed surface, a filler applied to the outer shell or spine, and at least one jamb. The filler and outer shell or spine are formed of the same material. A method of manufacture, a fridge including the support and a kit are also described.