Dishwasher UV Rinse-Liquor Sterilization Without Filter Clogging
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Solution Overview
Problem
Automatic dishwashers face handling challenges due to filter clogging in the rinsing liquor storage system, leading to reduced efficiency and user annoyance from manual cleaning requirements.
Innovation Solution
Incorporating a self-cleaning UV sterilization device that disinfects rinsing liquor before storage, using a UVC lamp and a wiper mechanism to prevent clogging, ensuring sterilized liquor is stored without manual maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter is inserted into the fluidic connection to filter out particles and impurities, then the rinsing liquor is cleaned before storage, but the filter fabric gradually becomes clogged requiring manual cleaning
Solution Approach 1:
The wiper device automatically cleans the UV lamp surface without user intervention. The wiper is displaceably guided in the housing and can move along the UV lamp to wipe off deposits, enabling the sterilization device to maintain its own functionality without requiring manual cleaning by the user
Solution Approach 2:
The patent replaces the mechanical filter system with a UV sterilization system. Instead of using a filter fabric that physically blocks particles, the UV lamp emits ultraviolet radiation to inactivate bacteria and germs in the rinsing liquor, eliminating the clogging problem inherent in mechanical filtration
2Extent of automation
If the wiper is displaceably guided in the housing to move along the UV lamp, then deposits are wiped off automatically, but the wiper mechanism adds device complexity
Solution Approach 1:
The wiper mechanism is designed to be self-actuating through magnetic interaction. The driver with magnet interacts with the wiper containing magnet, causing the wiper to move automatically along the UV lamp without requiring external motors, actuators, or complex control systems
Solution Approach 2:
The patent replaces complex mechanical actuation systems with a magnetic field-based interaction. The driver and wiper use magnetic forces to transmit motion, eliminating the need for mechanical linkages, gears, or motors that would increase device complexity
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 solution simplifies handling by maintaining the dishwasher's functionality through automatic disinfection and cleaning, minimizing contamination and odor risks, and ensuring continuous operation without user intervention.
Implementation Method 1
A UV lamp is arranged inside the housing... The radiation emitted by it acts on the rinsing liquor introduced into the disinfection device, as a result of which bacteria, germs and/or similar biological substances are inactivated, i.e. killed
Implementation Method 2
The wiper is displaceably guided in the housing so that in the event of a proper displacement movement it moves in particular along the UV lamp and thereby wipes off any deposits of particles, impurities, dirt and/or the like
Data Source
Figure 1
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Figure 3a
AI summary
The invention relates to a dishwasher with a washing container (3) providing a washing chamber (4), which has a loading opening (8) that can be closed by means of a pivotably mounted washing chamber door (9), and with a storage container (10) for the intermediate storage of washing liquid, which is fluidically connected to the washing container (3), as well as with a disinfection device (17) inserted into the fluidic connection between the washing container (3) and the storage container (10), wherein the disinfection device (17) has a housing (21), a UV lamp (22) arranged therein, and a scraper (29) that interacts with the UV lamp (22) and the housing (21), wherein the scraper (29) is slidably guided in the housing (21).In order to propose a dishwasher of the type mentioned above which enables an overall simplified handling, the invention proposes a dishwasher of the type mentioned above which is characterized by a germination device inserted into the flow-technical connection between washing container (3) and storage container (10), wherein the germination device (17) has a housing (21), a UV lamp (22) arranged therein and a scraper (29) cooperating with the UV lamp (22) and the housing (21), wherein the scraper (29) is slidably mounted in the housing (21).