Dishwasher Gap Baffle Structure for Cabinet Noise Abatement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing dishwashing appliances generate undesirable noise during operation, and previous noise reduction solutions are either complex or expensive to implement.
Innovation Solution
A dishwashing appliance with a sound abating device that includes resilient strips and a baffle portion with chambers, which extends along the sides and top of the appliance to contact cabinetry, effectively blocking sound transmission by creating an impedance mismatch and reducing low-frequency noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If sound abatement features are added to reduce noise, then noise level is reduced, but device complexity and cost increase
Solution Approach 1:
The sound abatement device is nested within the existing appliance structure, utilizing the space between the appliance and cabinetry. The baffle portion with chambers is integrated into a compact form that fits within the available gap, avoiding external additions and maintaining a streamlined design.
Solution Approach 2:
The sound abatement device employs a flexible baffle portion with chamber structures that can adapt to the varying gap distances between the appliance and cabinetry. The resilient nature of the baffle allows it to maintain effective sound blocking while accommodating installation tolerances and different cabinet configurations.
2Object-affected harmful factors
If sound abatement features are added to reduce noise, then noise level is reduced, but manufacturing cost increases
Solution Approach 1:
The baffle portion incorporates chamber structures that function as acoustic absorbers, utilizing air-filled cavities to attenuate sound waves. This approach uses simple geometric configurations rather than expensive specialized acoustic materials, achieving effective sound reduction through structural design alone.
Solution Approach 2:
The sound abatement device is divided into functional segments including the connecting portion and baffle portion with multiple chambers. This segmentation allows for modular manufacturing and assembly, simplifying production processes and reducing overall manufacturing complexity and cost.
3Object-affected harmful factors
If panels with insulated surfaces are used to enclose the appliance, then noise propagation is reduced, but device complexity and cost increase
Solution Approach 1:
Instead of enclosing the entire appliance with insulated panels, the invention extracts and addresses the sound transmission problem at its source by blocking the gap between the appliance and cabinetry. This targeted approach eliminates the need for comprehensive insulation while achieving effective noise reduction.
Solution Approach 2:
The sound abatement device applies sound blocking measures locally at the critical gap interface between appliance and cabinetry, rather than uniformly insulating the entire appliance. This localized treatment focuses resources on the most significant noise transmission path.
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 a cost-effective and efficient noise reduction by attenuating sound transmission between the appliance and cabinetry, improving the overall noise performance without increasing the appliance's cost significantly.
Implementation Method 1
A sound abating device is connected to the body along the opposing sides and the top side... The sound abating device includes a connecting portion for attachment to the body and a baffle portion defining at least one chamber extending longitudinally along the sound abating device... effectively blocking sound transmission by creating an impedance mismatch and reducing low-frequency noise
Data Source
AI summary
A dishwashing appliance is provided having one or more sound abatement features for blocking sound transmission emanating from the appliance during operation. Spaces or gaps present between the dishwashing appliance and the cabinetry in which it is installed can be blocked by features having one or more chambers that attenuate the transmission of sound therefrom. Such sound abatement features can be readily incorporated into the design of a dishwashing appliance and provide a relatively inexpensive alternative to conventional designs.