Dishwasher Automatic Dosing Device Self-Cleaning to Prevent Blockages
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Solution Overview
Problem
Automatic dosing devices in dishwashers can be functionally impaired by contaminants, leading to inadequate cleaning of washing items due to blockages and residue accumulation, which requires manual user intervention for cleaning.
Innovation Solution
A dishwasher with a controller that actuates an automatic dosing device to switch to a cleaning state, running a specific washing program to thoroughly clean the dosing device, including movable components and fluid-tight housings for maintenance access, ensuring the dosing device's functionality without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an automatic dosing device is used to dose cleaning agent, then the convenience of operation is improved, but the reliability deteriorates due to functional impairment from contaminants
Solution Approach 1:
The dosing device is equipped with a self-cleaning capability where the washing machine's washing program automatically cleans the dosing device. The dosing device includes a cleaning opening that allows washing liquid to enter and remove contaminants from the dosing chamber and dosing unit, enabling the device to maintain its own functionality without external intervention.
2Reliability
If the dosing device is sealed to prevent contamination, then the reliability is improved, but the ease of manufacture deteriorates due to complex fluid-tight structures
Solution Approach 1:
The dosing device is divided into separate components: a dosing chamber for storing cleaning agent, a dosing unit for dispensing, and a cleaning opening for maintenance. The fluid-tight housing is segmented into these functional sections, allowing each part to be manufactured separately and assembled, simplifying the overall manufacturing process while maintaining sealing integrity.
3Reliability
If manual cleaning of the dosing device is required, then the reliability can be maintained, but the ease of operation deteriorates due to user intervention
Solution Approach 1:
The dosing device automatically cleans itself during the washing machine's operation. The cleaning opening allows washing liquid to flow through the dosing chamber and dosing unit, removing contaminants automatically. This eliminates the need for users to manually disassemble and clean the dosing device, maintaining reliability while preserving ease of operation.
4Ease of repair
If the dosing device is accessible for cleaning, then the ease of repair is improved, but the object-generated harmful factors increase due to residue accumulation
Solution Approach 1:
The dosing device performs preliminary cleaning action by removing contaminants during each washing cycle before they can accumulate to harmful levels. The cleaning opening enables continuous flushing of the dosing chamber and dosing unit, preventing residue buildup that could lead to blockages or functional impairment.
Data Source
AI summary
Dishwasher, in particular household dishwasher, with a washing compartment a control device for carrying out a washing program from a number of washing programs and with an automatic dosing device for automatically dosing a plurality of dosing quantities from a supply a cleaning agent present as a solid in the washing area, the control device for cleaning the automatic dosing device being set up to control the automatic dosing device to switch to a cleaning state and to control the automatic dosing device for cleaning the automatic Dosing device to carry out a specific wash program from the number of wash programs.