Multi-Chamber Dosing Cartridge for Extended Active Release
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Solution Overview
Problem
Conventional dosing devices for washing or cleaning agents fail to provide a simultaneous and extended release of different active substances, leading to uneven and short-lasting effectiveness in washing or cleaning processes.
Innovation Solution
A metering device with two distinct active ingredient compositions, one of which includes a water-insoluble carrier material containing at least 10% ethylene-vinyl acetate copolymer, designed to release active ingredients over an extended period through controlled packaging and container design, allowing for multiple dosing cycles in washing machines or dishwashers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If conventional dosing devices are used for washing or cleaning agents, then the device structure is simple, but the release duration of active substances is short and the release uniformity is poor
Solution Approach 1:
The patent divides the dosing device into multiple independent chambers (first chamber, second chamber, third chamber) that can be separately filled with different active substance compositions. Each chamber contains a different composition (e.g., bleach, fabric softener, fragrance) that releases independently, extending the overall release duration while maintaining manageable device complexity through modular design
Solution Approach 2:
The patent implements a nested chamber structure where chambers are arranged concentrically (first chamber in center, second chamber surrounding it, third chamber outermost). This nesting allows multiple dosing functions to be integrated in a compact configuration, extending release duration without proportionally increasing device volume or complexity
2Manufacturing precision
If conventional dosing devices are used, then the device is easy to manufacture, but the release uniformity of active substances is uneven
Solution Approach 1:
The patent applies different release mechanisms to different chambers based on their specific requirements. Each chamber can have tailored opening sizes, release rates, and activation conditions suited to its active substance (e.g., bleach requiring different release characteristics than fragrance). This localized optimization ensures uniform release for each substance while the overall device remains manufacturable through standardized chamber designs
Solution Approach 2:
The patent controls release uniformity by adjusting parameters such as opening size, opening shape, and opening distribution in each chamber. These parameters can be modified during manufacturing to optimize release characteristics for different active substances, achieving precise control over release uniformity without requiring complex manufacturing processes
3Reliability
If multiple active substances are dosed simultaneously, then the cleaning effectiveness is enhanced, but the dosing control becomes complex
Solution Approach 1:
The patent segments different active substances into separate chambers (bleach in first chamber, fabric softener in second chamber, fragrance in third chamber), allowing each substance to be dosed independently and simultaneously. This segmentation enables enhanced cleaning effectiveness through multi-substance action while keeping the dosing control mechanism relatively simple through independent chamber operation
Solution Approach 2:
The patent designs chambers with universal features (similar wall structures, opening mechanisms, and mounting interfaces) that can accommodate different active substance types. This universality allows multiple substances to be dosed simultaneously through a standardized control approach, enhancing cleaning effectiveness without requiring entirely separate control systems for each substance
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 metering device ensures a prolonged and uniform release of active ingredients, extending the effectiveness of washing or cleaning agents across multiple cycles, independent of environmental factors like humidity and temperature.
Implementation Method 1
the carrier material is water-insoluble in at least one active ingredient composition
Implementation Method 2
at least one of the carrier materials is a polymeric material which contains at least 10% by weight of ethylene-vinyl acetate copolymer
Data Source
AI summary
Disclosed is a dosing device for metering agents in washing or cleaning processes. Said dosing device comprises a receptacle as well as a) a first active substance composition which is placed in said receptacle and contains at least one carrier material and at least one agent, and b) a second active substance composition that is arranged in said receptacle and also contains at least one carrier material and at least one agent but differs from the first active substance composition regarding at least one of the ingredients thereof. The inventive dosing device is characterized in that the carrier material in at least one active substance composition is water-insoluble while being suitable for releasing different active substances and distinguishing itself from conventional dosing devices by an improved releasing profile.