Removable Fan Housing Cover With Airflow Geometry for Easy Cleaning
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Solution Overview
Problem
Existing extractor devices for hobs lack an efficient and easy-to-clean design for their blower housing cleaning openings, requiring complex disassembly and not allowing for dishwasher-safe components.
Innovation Solution
A cover unit with an air guidance geometry, handle unit, and fastening device that allows for easy removal and reattachment, enabling simplified cleaning of the blower housing without disassembling the entire device, and is designed to be dishwasher-safe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cleaning opening is covered by a fixed structure integrated into the housing, then the housing structure is stable and complete, but cleaning requires complex disassembly and cannot be dishwasher-safe
Solution Approach 1:
The cover unit is separated from the housing structure as an independent removable component. The housing is divided into the stationary housing body and the movable cover unit, allowing the cover to be detached for cleaning while the housing remains intact. This segmentation enables the cover to be cleaned separately in a dishwasher without requiring disassembly of the entire housing structure.
2Ease of operation
If the cover unit is made removable for easy cleaning, then cleaning becomes simple and dishwasher-safe, but the fastening mechanism adds structural complexity
Solution Approach 1:
The cover unit is designed to be self-contained with all necessary fastening and handling features integrated into the cover itself. The handle unit and fastening elements are part of the cover unit, allowing it to be easily attached and detached without requiring additional external tools or complex assembly mechanisms. This self-service design simplifies manufacturing while enabling easy user operation.
3Reliability
If the cover unit includes integrated fastening elements, then the cover remains securely attached during operation, but removal requires tools or complex procedures
Solution Approach 1:
The fastening mechanism transitions from a static permanent connection to a dynamic reversible connection. The fastening elements are designed to provide secure attachment during normal operation (reliable fixation) while allowing easy detachment when needed (simple removal). This dynamic characteristic enables the cover to be both securely mounted and easily removable without requiring tools, resolving the contradiction between attachment reliability and ease of removal.
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
Facilitates easy and thorough cleaning of the extractor device by allowing the cover unit to be removed and reattached tool-free, reducing maintenance complexity and extending the device's lifespan.
Implementation Method 1
a first surface with an air guidance geometry for guiding an air flow within the fan housing
Data Source
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Figure 3
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AI summary
The invention relates to a cover unit (118) for covering a cleaning opening of a blower housing for an exhaust device, wherein the blower housing forms a vapor opening, a blower chamber for receiving a blower unit and a channel for directing the vapor from the vapor opening to an air inlet opening of the blower chamber, wherein the channel includes the cleaning opening. The cover unit (118) has a first surface (300) with an air guidance geometry (302) for guiding an airflow within the blower housing (106), a second surface facing away from the first surface (300) with a handle unit as an assembly aid for a user and a fastening device (304) for attaching the cover unit (118) to the exhaust device (104), wherein the fastening device (304) has at least one fastening element (308) arranged on a circumferential edge region (306) of the cover unit (118).