Standoff feature for appliance
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Solution Overview
Problem
Existing appliance assembly technologies face challenges in preventing gaseous bubble entrainment and achieving an airtight seal due to sharp angles and interfaces within the adhesive, leading to stress locations and thermal conduction issues in insulating appliances.
Innovation Solution
A standoff feature with a base having vertical and horizontal members, tapered projections, and flanges is integrated into the appliance assembly, forming smooth surfaces to reduce bubble entrainment and create a buffer between panels, minimizing sharp angles and enhancing the seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If panels are adhered together using conventional assembly methods, then structural integrity is achieved, but gaseous bubble entrainment occurs and airtight seal is compromised
Solution Approach 1:
The standoff feature incorporates rounded surfaces and curved interfaces instead of sharp angles, creating smooth transitions that prevent bubble entrapment during adhesive application. The standoff's geometry features continuous curved surfaces that eliminate pockets where gas bubbles could become entrained, thereby achieving both structural integrity and airtight sealing.
Solution Approach 2:
The standoff feature acts as an intermediary element between panels, providing a controlled interface for adhesive application. This mediator component manages the bonding process by creating a standardized interface that ensures proper adhesive distribution and prevents bubble formation, thereby improving seal reliability without compromising assembly strength.
2Ease of manufacture
If conventional panel assembly is used, then manufacturing simplicity is maintained, but stress locations and thermal conduction issues arise
Solution Approach 1:
The standoff feature introduces localized structural variations at critical bonding interfaces, concentrating stress distribution control at specific locations rather than throughout the entire panel assembly. This local modification allows the rest of the structure to maintain simple geometry while addressing stress concentration issues at the bonding zones where they occur.
Solution Approach 2:
The rounded surfaces of the standoff feature eliminate sharp angles that would create stress concentration points. The curved geometry distributes mechanical stresses more evenly across the bonding interface, preventing localized stress peaks while maintaining ease of manufacture through a relatively simple component design.
3Device complexity
If panels are directly coupled together, then device complexity is minimized, but thermal conduction problems occur in insulating appliances
Solution Approach 1:
The standoff feature serves as a thermal break intermediary between metal panels, interrupting direct thermal conduction paths. This mediator component, positioned at bonding locations, reduces heat transfer while maintaining structural connectivity, thereby improving insulation efficiency without significantly increasing overall device complexity.
Solution Approach 2:
The standoff feature modifies the thermal parameters of the assembly by introducing materials or geometries with different thermal conductivity characteristics at critical locations. This parameter change creates thermal breaks that reduce heat conduction while maintaining mechanical strength, addressing thermal issues without requiring complete redesign of the assembly structure.
Data Source
AI summary
A standoff feature for an appliance includes a connecting member having a first end and a second end. A first side member extends in a first direction from the first end of the connecting member. A second side member is spaced from the first side member. The second side member extends in the first direction from the second end of the connecting member. A first flange extends from a first side edge of the connecting member. The first side edge extends between the first end and the second end. The first flange extends in a second direction from the connecting member. A second flange extends from a second side edge of the connecting member. The second side edge extends between the first end and the second end and opposes the first side edge. The second flange extends in the second direction from the connecting member.