Dome-Shaped WC Cleaning Body for Stable Cistern Retention
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Solution Overview
Problem
Existing WC cleaning agents face challenges in maintaining aesthetic appeal, producibility, storability, transportability, and uniform rinsing behavior, while ensuring retention in toilet cisterns under varying flow conditions.
Innovation Solution
A cleaning agent shaped body with a specific geometry, featuring a bearing surface and a dome surface ratio of 1:20 to 4:5, provides improved adhesion and spatial orientation in the cistern, minimizing movement and preventing flushing, with optional imprints and convex polyhedral dome surfaces for enhanced identification and retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional spherical WC cleaning pieces are used, then aesthetic appeal is improved, but reliable retention in the cistern under varying flow conditions deteriorates
Solution Approach 1:
The patent applies asymmetry by transitioning from a symmetric spherical shape to an asymmetric shaped body with a distinct bearing surface and dome surface. The bearing surface has a specific diameter ratio (1:20 to 4:5) creating an asymmetric geometry that provides stable orientation and reliable retention in the cistern while maintaining aesthetic appeal through the dome surface design.
2Duration of action of moving object
If WC cleaning pieces are designed for long rinsing time, then uniform release of active substances is improved, but resistance to incoming water flow deteriorates
Solution Approach 1:
The patent applies spheroidality by incorporating a dome surface with specific curvature characteristics. The dome surface provides a streamlined profile that reduces turbulence and resistance to incoming water flow, while the curved geometry promotes even water distribution across the bearing surface, enabling uniform release of active substances over extended rinsing periods.
3Stability of the object's composition
If cleaning agent shaped bodies are made dimensionally stable, then storability and transportability are improved, but adaptability to different cistern flow conditions deteriorates
Solution Approach 1:
The patent applies local quality by differentiating the properties of different surfaces: the bearing surface is designed with specific dimensional stability characteristics for reliable placement and storability, while the dome surface incorporates adaptive curvature features that respond to varying water flow conditions. This local differentiation allows the shaped body to maintain stability during storage and transport while adapting to different cistern environments during use.
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 shaped body achieves uniform rinsing behavior, predictable retention in the cistern for up to 200 flushing cycles, and effective release of active substances, enhancing product lifespan and usability.
Implementation Method 1
Due to the improved adhesion—associated with this spatial orientation—of the shaped body to the cistern base, the movement of the cleaning agent shaped body in the water reservoir is minimized or completely prevented.
Data Source
AI summary
Cleaning agent shaped bodies having a bearing surface and a dome surface adjoining the bearing surface, the ratio of the maximum diameter of the bearing surface to the maximum diameter of a cross-sectional area of the dome surface parallel to the bearing surface being 1:20 to 4:5. The invention also relates to the use of these bodies and to a method using these cleaning agent shaped bodies.