Kitchen Appliance Lid Filtration Layout for Cleaner Filter Handling
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Solution Overview
Problem
Existing household cooking appliance lids with filtration sub-assemblies are prone to grease deposits, making it difficult to handle the gripping means, and the filtration efficiency is not optimized, leading to ergonomic and cleaning challenges.
Innovation Solution
The filtration sub-assembly is mounted in an opening on the outer periphery of the seal, away from cooking vapors, with a curved shape and integrated into the lid's design, including a viewing window and a filter holder, allowing for easier removal and improved filtration efficiency, and the lid is pivotally mounted with pivot members to reduce size and enhance access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filtration sub-assembly is engaged in the inlet of the cooking vapor evacuation duct, then the filtration efficiency is improved, but the gripping means is exposed to cooking vapors causing grease deposits and handling difficulty
Solution Approach 1:
The patent divides the lid into distinct functional zones: the filtration sub-assembly is positioned in the lower face away from the duct inlet, while the gripping means is located on the outer face. This spatial segmentation prevents the gripping means from being exposed to cooking vapors while maintaining filtration functionality through the sub-assembly's position in the vapor path.
Solution Approach 2:
The patent introduces an intermediary structure (the lid body) that separates the gripping means from the cooking vapors. The filtration sub-assembly passes through the lid, with its filtering portion in the vapor path and its gripping portion outside the vapor exposure zone, using the lid structure as a mediator to protect the gripping means.
2Reliability
If the filtration sub-assembly is engaged in the inlet of the cooking vapor evacuation duct, then the filtration function is achieved, but the outer face of the lid requires frequent cleaning due to exposed gripping means
Solution Approach 1:
The patent extracts the gripping means from the vapor-exposed zone and relocates it to the outer face of the lid. This separation removes the source of grease contamination from the outer face, significantly reducing cleaning requirements while the filtration sub-assembly maintains its filtering function through its position in the lower face.
3Length of stationary object
If the duct for discharging cooking vapors opens into the lower face, then the height of the cover can be reduced, but the gripping area may be exposed to vapors
Solution Approach 1:
The patent resolves the contradiction by changing the spatial dimension of the gripping area placement. Instead of positioning the gripping means vertically above the duct inlet (which would expose it to vapors), it places the gripping means on the outer horizontal face of the lid, using a different spatial dimension to achieve both compact height and vapor protection.
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
This design prevents grease deposits on the gripping area, enhances filtration efficiency, reduces the lid's height, and simplifies cleaning and filter renewal, while improving user comfort and safety.
Implementation Method 1
The lid (2) comprises a seal (18) provided to prevent the passage of cooking vapors between the lid (2) and the tank (1)
Implementation Method 2
a removable filtration sub-assembly (30) passing through the cooking vapors exhaust duct (10)
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
The lid (2) has a cooking fume evacuating flue (10) connecting a lower face (11) and an upper face (12) of the lid. The lower face carries a seal (18) surrounding the entry of the flue. A curve shaped removable filtration subassembly (30) extends across the flue, and is mounted in an opening (19) of the lower face outside the periphery of the seal. The flue opens into a lateral wall (15) of the lower face. The sub-assembly presents a section curved towards a central part of the lid from the opening of the lower face. A stop cooperates with a retaining element of the sub-assembly. An independent claim is also included for an electrical kitchen appliance, comprising a vat arranged in a case.