Cleaning process
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Solution Overview
Problem
Existing dishwashing methods face challenges in achieving improved cleaning performance and drying efficiency, especially in low-temperature and low-water consumption cycles, without increasing ingredient usage or adding new chemicals.
Innovation Solution
A dishwashing process where nonionic surfactants and anionic polymers are metered into the dishwasher with a time delay, with a specific weight ratio and temperature profile, to enhance cleaning and drying performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If new ingredients such as more effective surfactants, polymers or bleaching agents are added to cleaning agents, then cleaning performance is improved, but the complexity of the cleaning agent composition increases and ingredient availability is limited
Solution Approach 1:
The cleaning agent is divided into two separate components: a solid detergent portion and a liquid portion containing surfactants and polymers. These components are metered separately into the dishwasher at different times (t1 and t2), allowing independent optimization of each component's formulation and dosage without increasing overall composition complexity
Solution Approach 2:
The liquid cleaning agent portion is prepared and stored separately before the washing cycle, and is metered into the dishwasher at a specific time delay during the cycle. This preliminary preparation and timed introduction allows the cleaning agents to be present in the washing liquor at the optimal moment for maximum cleaning effectiveness
2Reliability
If the amount of ingredients used per cleaning cycle is increased, then cleaning performance is improved, but ecological and economic constraints are violated
Solution Approach 1:
Instead of using a large amount of cleaning agents throughout the entire cycle, the invention uses a controlled, time-delayed metering of liquid cleaning agent portion at a specific stage (t2) during the washing cycle. This partial action at the critical moment provides enhanced cleaning performance without requiring increased overall ingredient dosage, thus satisfying ecological and economic constraints
3Reliability
If the aqueous washing liquor is partially removed from the dishwasher interior, then drying performance is improved, but water consumption increases
Solution Approach 1:
The washing liquor is partially removed from the dishwasher interior at specific periodic intervals during the washing cycle (at time t). This periodic removal allows the washing liquor to be replaced with fresh water containing additional cleaning agents, improving drying performance through multiple rinsing phases without requiring continuous high water consumption
4Reliability
If cleaning agents are metered with a time delay into the dishwasher, then cleaning performance in low-temperature cycles is improved, but the process complexity increases
Solution Approach 1:
The liquid cleaning agent portion is prepared and stored in a separate container before the washing cycle begins. The metering system is pre-configured to introduce this liquid portion at a specific time delay (t2) during the cycle, ensuring that the cleaning agents are present in the washing liquor at the optimal moment for low-temperature cleaning effectiveness without requiring complex real-time control
Solution Approach 2:
A metering device acts as an intermediary between the stored liquid cleaning agent and the washing liquor. This intermediary component controls the timed introduction of the liquid portion at t2, simplifying the overall process by decoupling the storage and introduction functions while maintaining the time-delayed metering necessary for improved low-temperature cleaning performance
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 process improves cleaning and drying results without additional ingredients or increased dosages, effectively addressing the limitations of traditional methods in low-temperature and low-water cycles.
Implementation Method 1
a cleaning agent containing surfactants and polymers is dosed into the interior of a dishwasher with a time delay
Implementation Method 2
nonionic surfactant(s)... anionic polymer(s)... to enhance cleaning and drying performance
Implementation Method 3
nonionic surfactant(s)... anionic polymer(s)... with a specific weight ratio... to enhance cleaning and drying performance
Data Source
AI summary
The invention relates to a process for cleaning dishes in a dishwasher, in the course of which the aqueous washing liquor contained in the interior of the dishwasher is at least partly removed from the interior of the dishwasher at a point in time t, characterized in that a dishwasher detergent A, containing a) surfactant(s), b) anionic polymer(s) is metered at a time t1 < t in an amount m1 and at a time t2 > t in an amount m2 into the interior of the dishwasher. The process, according to the invention, differs from conventional cleaning processes in that the formation of deposits is reduced and the drying efficiency improved.