Reversible Appliance Outlet Box With Funnel Drainage and Acoustic Isolation
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Solution Overview
Problem
Existing appliance outlet boxes lack affordable drainage options for condensate and pressure relief, fail to provide acoustic isolation, and require more rigid structural support for noise reduction and vibration control during appliance installations, such as water heaters.
Innovation Solution
The proposed outlet box assembly includes a configurable housing with removable knock-out bodies for easy installation, a funnel assembly for fluid direction, a collet assembly for secure plumbing fittings, and an elastomeric gasket for noise reduction, along with an intumescent fire wrap support bracket for enhanced structural support and fire safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If existing appliance outlet boxes are used, then installation is simple, but drainage options are not cost affordable and acoustic isolation is not provided
Solution Approach 1:
The outlet box is divided into multiple wall portions (first wall portion, second wall portion, third wall portion, fourth wall portion) with separate socket portions for different drainage functions. This segmentation allows independent configuration of drainage options while maintaining acoustic isolation capabilities in each section.
Solution Approach 2:
An elastomeric gasket is introduced as an intermediary material between the outlet box walls and the surrounding structure. This gasket provides acoustic isolation and vibration dampening while maintaining the structural integrity and drainage functionality of the outlet box.
2Strength
If existing appliance outlet boxes are used, then structure is basic, but structural support is not adequate for noise reduction and vibration control
Solution Approach 1:
The outlet box employs composite construction with rigid wall portions providing structural support and an elastomeric gasket providing acoustic isolation. This composite approach enhances strength and vibration control while managing the complexity through functional material differentiation.
Solution Approach 2:
An elastomeric gasket (flexible material) is integrated into the rigid outlet box structure. This flexible component absorbs vibrations and reduces noise transmission while maintaining the overall structural support capability of the rigid housing.
3Ease of operation
If knock out bodies are permanently attached, then structural integrity is maintained, but installation flexibility is reduced
Solution Approach 1:
Knock out bodies are pre-installed in the socket portions during manufacturing, maintaining structural integrity during shipping and installation. The knock out bodies can be easily removed when needed to allow conduit insertion, providing installation flexibility without compromising the permanent structural framework.
Solution Approach 2:
The knock out bodies are designed to be temporarily retained and then discarded (removed) after serving their protective function during shipping. This allows the socket portions to be opened for conduit installation while the main structural integrity of the outlet box remains intact.
Data Source
AI summary
An outlet box assembly includes an outlet box housing, configurable between a first and second orientation, and a funnel assembly. The outlet box housing includes a first wall portion and a second wall portion. The first wall portion includes a first socket portion, including a first knock out portion, and at least one through hole. The first knock out portion includes a first knock out body and an area of weakening. The through hole attaches a plumbing fitting to the first wall portion. The second wall portion includes a second socket portion including a second knock out portion including a second knock out body and an area of weakening. The funnel assembly has a fixed funnel portion and a funnel cover configured to be removably attached to the fixed funnel portion. The funnel assembly is configured to direct fluid to the first or second socket portion.