Dishwasher Detergent Dosing Unit With Visible Multi-Cell Level Indication
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Solution Overview
Problem
Existing dishwashers often face issues with determining the remaining detergent level in dosing units, leading to suboptimal washing performance and potential dirty cycles when the detergent runs low, as users struggle to gauge the correct amount of detergent needed for intensive cleaning tasks.
Innovation Solution
A dishwasher with a dosing unit featuring a detergent dispenser and a multi-cell detergent level measuring system that allows for easy visualization of the remaining detergent by rearranging cells based on the door's position, combined with sensors and a control unit for alerts and a transparent design for clear visibility, ensuring accurate measurement and timely refills.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a closed box dosing unit is used to automatically dose detergent, then automated detergent dosing is achieved, but determining the remaining detergent level becomes difficult
Solution Approach 1:
The detergent dispenser is segmented into multiple separate cells (first cell, second cell, third cell) that can be individually filled with detergent. Each cell acts as an independent container, allowing the system to track detergent levels in discrete units. When the door moves from closed to open position, the cells are positioned to display their fill levels, providing visual information about remaining detergent without compromising the automated dosing function.
Solution Approach 2:
The detergent cells are positioned in a vertical arrangement when the door is closed, allowing detergent to flow downward due to gravity. When the door opens, the cells rotate or reposition to a horizontal display orientation, enabling visual inspection of detergent levels. This dimensional transformation allows the same structure to serve both automated dosing and information display functions.
2Manufacturing precision
If the door is kept closed to maintain automated dosing, then dosing accuracy is maintained, but user access to the washing cabin is delayed
Solution Approach 1:
The detergent cells are pre-filled with detergent before the washing cycle begins. The dosing unit is prepared in advance by filling the cells to appropriate levels, so that when the door opens for user access, the detergent is already ready for automated dispensing. This preliminary preparation eliminates the need to open the door for detergent refilling during the cycle.
Solution Approach 2:
The system provides visual feedback about detergent levels through the positioned cells, allowing users to monitor detergent status without opening the door. This feedback mechanism enables users to plan detergent refilling in advance, avoiding interruptions during washing cycles and maintaining dosing accuracy.
3Measurement precision
If multiple cells are used for detergent storage, then detergent level measurement is improved, but device complexity increases
Solution Approach 1:
The detergent cells are designed to automatically position themselves based on door position. When the door closes, gravity causes detergent to flow into the cells and they assume a vertical storage position. When the door opens, the cells naturally reposition to a horizontal display position. This self-positioning mechanism eliminates the need for complex motors or actuators, reducing device complexity while maintaining measurement precision.
Solution Approach 2:
The detergent storage function and the level measurement function are merged into a single integrated structure. The same cells that store detergent also serve as the measurement indicator. By combining these functions, the patent avoids adding separate measurement devices, thereby reducing overall device complexity while achieving precise detergent level measurement.
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 solution provides users with clear, intuitive feedback on the detergent level, preventing dirty cycles and ensuring optimal washing performance by allowing for precise detergent management and timely refills, enhancing both cleaning efficacy and user convenience.
Implementation Method 1
When the door is changed to the closed position, the detergent in the detergent dispenser fills in the cells
Data Source
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AI summary
The present invention relates to a dishwasher (1) comprising a body (2); a washing cabin (3) that is disposed on the body (2) and wherein the washing process is performed; a door (4) that almost completely closes the washing cabin (3) and that has a closed position (K) perpendicular to the floor and an open position (A) almost parallel to the place where access to the washing cabin (3) is provided, and a dosing unit (5) that is disposed on the door (4), wherein the liquid/gel detergent can be filled and that enables the detergent to be transferred to the washing cabin (3) during the washing process.