Disposable Filter Assembly with Overlay for Grease Capture
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Solution Overview
Problem
Commercial kitchens face challenges with grease buildup in exhaust hoods, which poses a fire hazard and requires regular cleaning of baffles, making it labor-intensive and aesthetically unappealing.
Innovation Solution
A filter assembly with a filter media containing oleophilic or fire retardant materials, integrated with a frame having an overlay portion that covers at least 20% but no more than 80% of the filter media, providing a continuous surface for effective grease filtration and easy cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional baffles are used for grease filtration in exhaust hoods, then grease droplets are captured, but the baffles require regular cleaning which is labor-intensive and time-consuming
Solution Approach 1:
The filter assembly is designed as a disposable component that can be easily replaced rather than cleaned. The frame with overlay portion and filter media provides effective grease filtration, and when saturated or soiled, the entire assembly is discarded and replaced with a new one, eliminating the need for labor-intensive cleaning operations while maintaining fire safety
Solution Approach 2:
The filter assembly enables discarding of the contaminated filter media and frame overlay after use. The oleophilic or fire retardant materials in the filter media capture grease droplets, and once the filter is saturated, the entire assembly is discarded rather than cleaned and reused, saving time and labor while maintaining effective fire hazard reduction
2Reliability
If traditional filter assemblies are used, then grease filtration is provided, but the appearance becomes unappealing due to grease buildup
Solution Approach 1:
The filter assembly with its frame and overlay portion is designed as a disposable unit that maintains aesthetic appearance until discarded. The overlay portion provides a clean appearance when installed, and when grease buildup becomes visible or fire hazard risk increases, the entire assembly is replaced rather than cleaned, maintaining aesthetic appearance continuously
Solution Approach 2:
The filter assembly segments the filtration function from the structural frame by using a separate overlay portion that can be aesthetically designed. The overlay portion covers the filter media and provides the visible surface, allowing the aesthetic appearance to be maintained while the filter media performs the grease filtration function
3Ease of operation
If an overlay portion covering more than 80% of the filter media is used, then a continuous surface for cleaning is provided, but the filtration effectiveness is reduced
Solution Approach 1:
The overlay portion is designed to cover only 20-80% of the filter media surface, providing a continuous cleanable surface in the exposed areas while leaving sufficient filter media exposed to maintain effective grease filtration. This local quality approach optimizes both cleaning ease and filtration effectiveness by having different regions serve different functions
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 filter assembly effectively captures grease droplets, reducing the risk of fire hazards and allowing for easy maintenance by being disposable, lightweight, and wipeable, thus improving safety and aesthetics in commercial kitchens.
Implementation Method 1
The web including at least one of a oleophilic material or a fire retardant material
Implementation Method 2
The web including at least one of a oleophilic material or a fire retardant material
Data Source
AI summary
Filter assemblies are disclosed. In particular, filter assemblies including a filter media and an overlay portion covering the filter media are disclosed. Such filter assemblies may provide both acceptable filtering capacity and cleanable visible front surfaces.