Double-Spray Cleaning for Drum Washer Viewing Windows and Gasket Folds
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Solution Overview
Problem
Drum washing machines face challenges in effectively cleaning foam and debris from the watching window and window gasket ring, leading to residual detergent contamination and bacterial growth, which affects washing efficiency and health due to complex and costly existing solutions.
Innovation Solution
A double spraying system with a first nozzle for the outer surface and a second nozzle for the inner fold of the window gasket ring, connected to the inlet solenoid valve, ensures thorough cleaning during washing, rinsing, and dehydration processes, using controlled water flow to prevent re-soaking clothes and reduce contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a spraying pump is added directly for cleaning circularly, then the cleaning capability is improved, but the device complexity and cost increase
Solution Approach 1:
The invention extracts the cleaning function from a separate spraying pump system and integrates it into the existing water supply system by utilizing the inlet solenoid valve and water supply hose. This eliminates the need for additional spraying pumps and complex control systems while maintaining effective cleaning capability through strategic nozzle placement and water flow direction control
Solution Approach 2:
The inlet solenoid valve and water supply hose, originally designed for filling the washing drum, are made multi-functional by adding spraying nozzles that enable both drum filling and window/gasket ring cleaning through the same water supply path. This universal approach eliminates dedicated cleaning components while achieving comprehensive cleaning coverage
2Object-affected harmful factors
If water is led out from the main washing cavity of the water separator for spraying, then the cleaning effect is improved, but the water consumption increases
Solution Approach 1:
The invention performs preliminary cleaning action during the washing cycle by spraying water onto the window and gasket ring before the main washing process completes. The inlet solenoid valve opens during water filling to spray clean water onto surfaces, preventing foam and debris accumulation in advance, thereby reducing the need for additional rinsing water later
3Productivity
If the solenoid valve connects water flow directly to the top of the window gasket ring, then the washing efficiency is improved, but the cleaning coverage is insufficient
Solution Approach 1:
The cleaning system is segmented into multiple spray zones: one nozzle positioned at the top of the window gasket ring for general cleaning and another nozzle specifically targeting the fold area. This segmentation ensures that each difficult-to-reach area receives dedicated water flow, completely eliminating dirt accumulation zones while maintaining high washing efficiency
Solution Approach 2:
Different regions of the window gasket ring receive customized spray treatment: the top area receives water flow for overall cleaning, while the fold area receives targeted spray from a second nozzle positioned to specifically address the crevice. This local quality approach ensures thorough cleaning of each area according to its specific cleaning needs, preventing dirt accumulation in the fold while maintaining efficient washing
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 double spraying system effectively cleans the watching window and window gasket ring, preventing secondary pollution, improving washing efficiency, and reducing bacterial growth while being simple, cost-effective, and energy-efficient.
Implementation Method 1
If the washing machine connects a water flow through the solenoid valve during supplying water
Implementation Method 2
The water flow sprays the clothes directly when supplying water, and quickly wet the clothes, to improve washing efficiency. Meanwhile, the water flow flows through the watching window to flush the foam on the watching window
Data Source
AI summary
A drum washing machine is provided with a double spraying system used for washing the window and the window gasket ring respectively. A first spraying nozzle is connected with the inlet solenoid valve of the washing machine to wash the outer surface of the watching window and the window gasket ring, and a second spraying nozzle to wash the folded inner wall of the window gasket ring. The spraying nozzles are connected to the solenoid valve through a three-way pipe, or connected to the solenoid valve of the washing machine through respective pipes. The double spraying system intakes water and soaks the clothes in the washing process, and/or intakes water and sprays the watching window and the window gasket ring simultaneously, and/or sprays the watching window and the window gasket ring when dehydrating the clothes in the dehydrating process.