Kitchen Hood Filter Mount for Heat-Protected Grease Pads
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Solution Overview
Problem
Existing wool or fiber-based filters in kitchen ventilation systems are prone to degradation from excessive heat and flames, leading to costly replacements and operational difficulties due to the need for additional metal support frames and heat shields.
Innovation Solution
A reusable external support frame embedded with a filter pad made of fibers such as wool, wood-based viscose, or cellulose-based synthetic fibers, which can be tucked into the frame's backside edges, combined with a clip-on bracket system for easy installation and maintenance, allowing for the use of disposable grease filters without welding or structural modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wool or fiber-based filters are used in kitchen ventilation systems, then grease particulates can be absorbed effectively, but the filters are degraded by excessive heat and flames causing holes to form
Solution Approach 1:
A metal support frame acts as an intermediary between the heat/flame environment and the wool filter pad. The frame physically separates the filter medium from direct contact with harmful thermal and flame conditions while maintaining the filter's grease absorption function. The frame serves as a protective barrier that allows the filter to operate in previously hostile environments.
Solution Approach 2:
The invention combines metal support frame material with wool or fiber-based filter pad material to create a composite filter assembly. This composite structure leverages the heat resistance of metal and the grease absorption properties of wool/fiber materials, achieving both thermal stability and filtration effectiveness.
2Duration of action of stationary object
If separate metal support frames and heat shields are added to protect wool filters, then filter durability improves, but device complexity and cost increase
Solution Approach 1:
The support frame and heat shield functions are merged into a single integrated metal support frame structure. This unified component simultaneously provides mechanical support, heat reflection, and flame protection, eliminating the need for separate heat shield components and reducing overall assembly complexity.
Solution Approach 2:
The metal support frame is designed to perform multiple functions: structural support for the filter pad, heat reflection barrier, flame protection shield, and easy installation/removal interface. This multi-functional design reduces the total number of components needed while maintaining comprehensive protection.
3Reliability
If additional metal support frames and heat shields are installed, then filter protection improves, but operator weight burden and installation difficulty increase
Solution Approach 1:
The metal support frame is designed with thin-walled construction that provides adequate structural strength and heat protection while minimizing weight. The frame's geometry and material selection achieve optimal strength-to-weight ratio, making the assembly lightweight enough for easy operator handling.
Solution Approach 2:
The support frame incorporates removable and reconfigurable features that allow dynamic adjustment during installation and maintenance. The frame can be easily assembled, installed, disassembled, and reinstalled without specialized tools or complex procedures, adapting to different filter replacement scenarios.
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, durable, and easy-to-maintain filter system that effectively removes grease particulates, reducing the risk of fire and extending the lifespan of baffle filters by preventing grease accumulation and allowing for easy cleaning and replacement.
Implementation Method 1
the filter pad comprising fibers configured to absorb grease particulates such as, for example, wool fibers, wood-based viscose fibers, and cellulose-based synthetic fibers
Data Source
AI summary
A filter assembly includes: a filter pad including fibers selected from wool fibers, wood-based viscose fibers, and cellulose-based synthetic fibers, the fibers configured to absorb grease particulates; a baffle-type filter; and a support bracket configured to support the filter pad. The support bracket includes: a clip portion that is substantially u-shaped; an attachment portion including a mounting hole formed in a surface thereof; and a support portion arranged between the clip portion and the attachment portion, the support portion configured to support the disposable filter thereon. The filter assembly includes a hanging bracket configured to support the filter pad therein, the hanging bracket including a front wall, an attachment wall including a mounting hole formed in a surface thereof, and a top wall arranged between the front wall and attachment wall. The support bracket and the hanging bracket are configured to mount the filter assembly to an exhaust hood.