Column cabinet construction and method for door construction
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Solution Overview
Problem
Conventional thermoforming methods for producing refrigerator doors and cabinets limit aesthetics, finishes, and material options, and result in stress whitening and poor door gasket seal performance due to material limitations and assembly processes.
Innovation Solution
A refrigerated appliance design featuring a metal inner liner with a framed thermal break member and corner joinery elements, coupled with a cabinet face plate and door components such as a framed profile, inner panel, ladders, gasket, and outer door panel, made from materials like sheet metal or thermoplastic polymers, to enhance thermal insulation and aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If thermoforming plastic is used to form the cabinet or inner panel, then production is simplified, but aesthetics, finishes, and material options are limited
Solution Approach 1:
The door assembly is divided into separate components: an inner panel, an outer door panel, a framed profile, and a thermal break member. This segmentation allows each component to be manufactured independently with optimal materials and processes, then assembled together to achieve both manufacturing efficiency and aesthetic versatility.
Solution Approach 2:
The door assembly uses composite construction combining metal or rigid plastic inner panels with separate outer door panels, framed profiles, and thermal break members. This composite approach enables the use of different materials for different functions, achieving both structural integrity and aesthetic flexibility while maintaining manufacturing simplicity.
2Ease of manufacture
If conventional thermoforming methods are used, then production cost is reduced, but stress whitening occurs and door gasket seal performance deteriorates
Solution Approach 1:
By separating the door into multiple components including the framed profile and outer door panel, the design eliminates the need for high-stress thermoforming processes that cause whitening. Each component can be manufactured using lower-stress processes while maintaining overall structural integrity and seal performance.
Solution Approach 2:
The framed profile acts as an intermediary component that connects the inner panel, thermal break member, and outer door panel. This intermediate structure distributes stresses evenly and provides a stable mounting surface for the door gasket, preventing the stress concentration and whitening that occurs in conventional thermoformed doors.
3Strength
If door dykes of significant size are used in the door liner, then structural support is provided, but aesthetics of the inner door appearance are compromised
Solution Approach 1:
The door dykes are extracted from the inner panel and repositioned to the outer door panel. This allows the inner panel to have a clean, aesthetic appearance without visible structural elements, while the outer panel accommodates the functional door dykes needed for structural support and gasket compression.
Solution Approach 2:
The structural support function is moved from the two-dimensional inner panel surface to the three-dimensional outer door panel structure. This dimensional transition allows structural elements to be hidden from the primary aesthetic view while maintaining their functional support role.
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 improves thermal insulation, enhances aesthetics, and improves door gasket seal performance, addressing the limitations of conventional thermoforming methods by providing a more robust and visually appealing refrigerator construction.
Implementation Method 1
a framed thermal break member having four corner joinery elements coupled to four side thermal breaks
Implementation Method 2
an outer door panel... a gasket
Data Source
AI summary
A refrigerated appliance having a cabinet defining at least one interior compartment, the cabinet having a metal inner liner, a framed thermal break member having four corner joinery elements coupled to four side thermal breaks, and a cabinet face plate. The refrigerated appliance also has a door coupled to the cabinet where the door has a framed profile having four corner joints coupled to four side profiles, an inner panel, two or more ladders, a gasket, and an outer door panel. The framed thermal break member is coupled to the metal liner and the cabinet face plate. The framed profile is coupled to the inner panel, two or more ladders, the gasket, and the outer door panel.