Cooktop Downdraft Filter Nesting for Accessible Maintenance
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Solution Overview
Problem
Existing downdraft hoods require difficult maintenance as the access point for replacing active-carbon filter elements is often in a poorly accessible area, necessitating the hood to be displaced or partially disassembled for filter replacement.
Innovation Solution
A cooktop design where the second filter seat is accessible through the first filter seat, allowing both filter elements to be pulled out through the suction opening, simplifying maintenance by placing the access in an easily accessible region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the second filter is placed in a rear area of the support, then the aesthetics of the exposed parts is improved, but the accessibility for maintenance deteriorates
Solution Approach 1:
The second filter seat is nested within the first filter seat structure, allowing the second filter to be accessed through the same opening as the first filter. This nesting arrangement enables maintenance of both filters through a single accessible opening at the front of the cooktop, eliminating the need for a separate rear opening while preserving aesthetic appearance.
2Ease of operation
If an additional opening is formed on the outer surface for filter maintenance, then the accessibility for maintenance is improved, but the device complexity increases
Solution Approach 1:
The first filter seat serves multiple functions: it houses the first filter, provides access to the first filter for maintenance, and simultaneously provides access to the second filter through its structure. This multi-functionality eliminates the need for a separate second filter seat opening, reducing the total number of openings required in the cooktop structure.
3Ease of operation
If the hood is displaced or disassembled to access the second filter, then the accessibility for maintenance is improved, but the loss of time and operational disruption increases
Solution Approach 1:
The second filter seat is pre-positioned within the first filter seat structure during manufacturing, with the opening strategically located to provide direct access to both filters. This preliminary arrangement eliminates the need for disassembly or displacement operations during maintenance, allowing users to access and replace both filters quickly through a single opening.
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 simplifies filter maintenance by allowing both filters to be accessed and replaced without disassembling or displacing the cooktop, improving user convenience and reducing maintenance complexity.
Implementation Method 1
A centrifugal fan is in fluid communication with the suction opening, and particularly has an inlet port in fluid communication with the suction duct. The fan ejects the fumes through a outlet scroll.
Implementation Method 2
the first filter, usually consisting of a metal grid, which is adapted to facilitate condensation of suspended liquid or semi-liquid particulates, such as fats, in the cooking fumes
Implementation Method 3
The second filter requires replacement of the filter elements once they have reached saturation. The second filter comprises one or more elements active-carbon filter elements... adapted to absorb odors from the cooking fumes
Data Source
AI summary
A cooktop may include: a support having a suction opening, top and bottom surfaces, and a connecting edge, with front and rear surfaces, between the top and bottom surfaces; one or more heating elements arranged on the support; and a suction device, connected in fluid communication with the suction opening and configured to draw in cooking fumes, including first and second filters. The first filter may have a first filter element in a first seat, wherein the first seat is accessible through the suction opening. The second filter, located downstream from the first filter, may have second filter elements in a second seat. The first seat may be interposed between the suction opening and the second seat. The second seat may be accessible through the first seat, to allow extraction and/or insertion of the second filter elements through the suction opening, passing through the first seat.