Dishwasher Dosing Device with Two-Part Cover for Fluid-Tight Sealing
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Solution Overview
Problem
Existing dosing devices for pourable cleaning agents in dishwashers lack operational reliability, particularly in preventing moisture ingress and ensuring secure fluid-tight sealing during operation.
Innovation Solution
A dosing device with a two-part housing cover, featuring a cover part for fluid-tight sealing and a closure part with multiple locking elements interacting with locking cams on the housing, providing a multi-point locking mechanism and a bayonet lock design for secure closure, along with a hinged and ring-shaped closure part for easy handling and reduced mechanical stress on the seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-piece housing cover is used for fluid-tight sealing, then the structure is simple, but the operational reliability and sealing security are insufficient
Solution Approach 1:
The housing cover is divided into two separate parts: a cover part that provides fluid-tight sealing and a closure part that provides locking functionality. This segmentation allows each part to be optimized for its specific function, improving overall sealing reliability while maintaining structural simplicity through functional separation.
2Reliability
If a multi-point locking mechanism is implemented, then the sealing security is enhanced, but the device complexity increases
Solution Approach 1:
Multiple locking elements are integrated into a single closure part that rotates as one piece. This merging approach provides multi-point locking security through multiple closure elements while avoiding the complexity of multiple independent locking mechanisms, as all elements are actuated simultaneously through the rotation of one closure part.
Solution Approach 2:
The closure part is designed to rotate dynamically, allowing the locking elements to engage with and disengage from the locking cams through rotational movement. This dynamic mechanism provides secure multi-point locking while maintaining ease of operation and reducing mechanical complexity compared to static or multi-component locking systems.
3Ease of operation
If a hinged housing cover is used, then the ease of operation is improved, but the sealing integrity may be compromised
Solution Approach 1:
The hinged cover is segmented into a cover part that maintains sealing integrity through its hinge connection and a closure part that provides locking. This segmentation allows the hinge to provide ease of operation for opening/closing while the separate closure part ensures sealing integrity through positive locking engagement.
4Ease of operation
If the closure part is designed as a ring-shaped structure, then the ease of operation and visibility are improved, but the manufacturing complexity increases
Solution Approach 1:
The closure part is designed as a ring-shaped structure with curved geometry that provides ergonomic handling and rotational movement. This curved design improves ease of operation and user accessibility while the ring shape can be efficiently manufactured using standard forming processes, balancing manufacturability with operational advantages.
Data Source
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AI summary
The invention relates to a dosing device for the dosed introduction of a pourable cleaning agent into a treatment chamber of a program-controlled cleaning device, in particular a dishwasher, with a housing (11) having a loading opening (12), a rotatable arranged in the housing (11) and via the loading opening (12 ) accessible support unit (14), which is used for the exchangeable accommodation of a storage container (13) provided for accommodating the cleaning agent, and with a housing cover (7) for fluid-tight sealing of the charging opening (12), the housing cover (7) forming the fluid-tight seal of the charging opening (12) and a closure part (9) which is movably arranged on the cover part (8), the closure part (9) being equipped with a plurality of closure elements (16) which each have a housing (11 ) arranged locking cams (17) interact.