Top-Load Washer Drum Rinse Flow for Door Bubble Removal
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Solution Overview
Problem
Conventional top-loading laundry treatment apparatuses face issues with bubbles and contaminants remaining on the door and drum surfaces, leading to reduced washing efficiency and potential user errors, due to the close proximity of the introduction aperture and drum, which can cause water to leak and impurities to stick to laundry.
Innovation Solution
The apparatus includes a tub, a rotatable drum, a door, and an ejection unit with a chamber system that utilizes centrifugal force to guide and discharge water to the door and drum surfaces, ensuring thorough washing and preventing impurities from remaining, while also featuring a pressure reduction unit to manage excessive water pressure and prevent leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the introduction aperture is positioned close to the drum upper end to minimize apparatus volume, then the apparatus achieves compact size, but bubbles and contaminants easily remain on the door and drum surfaces
Solution Approach 1:
The patent extracts the harmful bubbles and contaminants from the door and drum surfaces by introducing a water stream through the ejection unit that flows along the drum circumferential surface and door inner surface, carrying impurities away from these surfaces and preventing them from adhering to the laundry
Solution Approach 2:
The patent introduces water as an intermediary substance that mediates between the washing process and the door/drum surfaces. The water stream acts as a carrier that removes bubbles and contaminants, preventing direct contact between impurities and the door/drum surfaces
2Productivity
If excessive pressure is applied to the wash water in the additional flow channel to improve cleaning effect, then cleaning efficiency increases, but the flow channel may break causing water leakage or backward flow
Solution Approach 1:
The patent provides beforehand cushioning by forming a buffer zone between the water supply aperture and the drum through the chamber structure. This buffer zone absorbs and regulates water pressure, preventing excessive pressure from damaging the flow channel while still enabling effective cleaning through controlled water flow along the drum and door surfaces
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 effectively removes impurities and bubbles from the door and drum surfaces, enhancing washing efficiency and preventing user errors by ensuring complete washing cycles and minimizing water leakage.
Implementation Method 1
an ejection unit with a chamber system that utilizes centrifugal force to guide and discharge water to the door and drum surfaces
Data Source
AI summary
A laundry treatment apparatus includes a tub body configured to store water, a tub cover configured to define an upper surface of the tub body, an introduction aperture defined through the tub cover, a supply aperture provided in the tub cover, and configured to enable supply of water into the tub body, a drum that is rotatably provided in the tub body, and that is configured to receive laundry, the drum including an opening in communication with the introduction aperture, a door configured to open and close the introduction aperture, and an ejection unit configured to eject water introduced into the supply aperture to at least one of the door or to the drum.