Illuminated trim assembly for appliance
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Solution Overview
Problem
Refrigerator appliances require improved illumination solutions that effectively direct light into cavities while managing heat to prevent overheating, and existing designs often lack efficient integration of light sources and heat management within the trim assembly.
Innovation Solution
A trim assembly for appliances featuring a cabinet with a trim breaker member, a light housing, and a lens that directs light into the compartment, coupled with a heat loop assembly to manage heat, ensuring continuous illumination along the edges and corners without shadows and preventing overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light source is positioned within the trim assembly to illuminate the appliance cavity, then illumination intensity is improved, but heat generation increases causing potential overheating
Solution Approach 1:
The patent extracts the heat management function from the light source assembly by introducing a separate heat loop assembly. The heat loop is positioned to receive heat from the light source channel and dissipate it externally, separating the illumination function from heat management to prevent overheating while maintaining effective lighting.
Solution Approach 2:
The heat loop assembly acts as an intermediary between the light source and the appliance cavity. It intercepts heat generated by the light source before it can accumulate in the compartment, transferring thermal energy away from the illuminated space through dedicated heat dissipation pathways.
2Illumination intensity
If the light source is positioned close to the compartment for effective illumination, then illumination intensity improves, but heat transfer to the compartment increases
Solution Approach 1:
The trim assembly is segmented into distinct functional zones: a light source channel for illumination, a heat loop assembly for thermal management, and a lens assembly for light direction. This segmentation allows the light source to be positioned effectively close to the compartment while the heat loop intercepts thermal energy before it reaches the illuminated space.
Solution Approach 2:
The patent converts the harmful heat generated by the light source into a manageable thermal flow by positioning the heat loop to capture and redirect this thermal energy. The heat that would otherwise be harmful is channeled through a dedicated pathway, transforming a problem into a controlled thermal management system.
3Reliability
If the trim assembly includes both light source and heat management components, then operational reliability improves, but device complexity increases
Solution Approach 1:
The patent merges the light source housing and heat loop assembly into a single integrated trim assembly structure. The light housing and heat loop cover are positioned to work together as unified components, reducing the number of separate assemblies needed while maintaining both illumination and thermal management functions within one integrated unit.
Solution Approach 2:
The trim assembly is designed as a multi-functional unit that simultaneously performs illumination, heat management, and structural functions. The same assembly that houses the light source also incorporates the heat loop, lens mounting, and structural support, reducing overall device complexity by consolidating multiple functions into a single universal component.
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 provides uniform and shadow-free illumination within the appliance cavity while effectively managing heat, enhancing the overall lighting and operational efficiency of the refrigerator.
Implementation Method 1
The lens is configured to direct light into a cavity defined by the appliance cabinet
Implementation Method 2
A heat loop assembly is operably coupled with the trim breaker member. The heat loop assembly includes a cover operably coupled with the trim breaker member and at least partially defining a second channel. A heat loop is positioned within the second channel and is supported by the cover.
Implementation Method 3
A heat loop is positioned within the second channel and is supported by the cover
Data Source
AI summary
An appliance has an illuminated trim assembly that includes an appliance cabinet having first and second sidewalls and a top wall. The appliance cabinet defines a compartment. A trim breaker member extends along a forward edge of the first and second sidewalls and the top wall. A light housing is positioned rearward of the trim breaker member and defines a light source channel. The light source channel has an open end proximate the compartment. A lens extends between the trim breaker member and the light housing. The lens is positioned to separate the light source channel from the compartment. A light source is positioned within the light source channel and is configured to direct light through the lens into the compartment.