Drum-Mounted Electric Liquid Dispenser for Improved Laundry Wetting
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Solution Overview
Problem
Existing laundry washing machines often fail to effectively distribute washing/rinsing liquid throughout the drum, leading to incomplete wetting of laundry, particularly in central and rear parts, and pose safety risks with electric components immersed in washing liquid.
Innovation Solution
A laundry washing machine with an electric liquid supplying device mounted on the drum, powered by a wireless power receiver unit separate from the drum, which dispenses liquid directly where needed, eliminating the need for sliding contacts and enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large amount of water is used for washing, then washing performance is improved, but water consumption increases and energy consumption for heating water increases
Solution Approach 1:
The washing machine drum is segmented into an upper washing chamber and a lower rinsing chamber, allowing separate water management for each function. This enables reduced water consumption while maintaining washing performance through efficient water distribution and reuse.
Solution Approach 2:
The rinsing chamber is nested within the washing chamber structure, with the rinsing drum positioned inside the washing drum. This nested configuration allows compact space utilization and enables the rinsing function to operate with minimal additional water while benefiting from the washing chamber's thermal environment.
2Reliability
If a large amount of water is used for washing, then washing performance is improved, but energy consumption for heating water increases
Solution Approach 1:
The rinsing chamber is nested within the washing chamber structure, with the rinsing drum positioned inside the washing drum. This nested configuration allows compact space utilization and enables the rinsing function to operate with minimal additional water while benefiting from the washing chamber's thermal environment.
Solution Approach 2:
The patent converts the typically wasted hot water from the washing cycle into a useful resource for the rinsing cycle. By routing a portion of the hot wash water to the rinsing chamber, the system transforms what would be waste heat and water into a beneficial pre-heated rinsing medium, reducing the energy required for heating rinse water.
3Reliability
If washing and rinsing are performed in separate cycles, then washing performance is improved, but washing time increases
Solution Approach 1:
The patent merges the washing and rinsing functions into a single integrated cycle by providing two separate chambers (washing chamber and rinsing chamber) that operate simultaneously. The washing drum and rinsing drum work in parallel, allowing both functions to be completed in the time it would traditionally take to complete just one function sequentially.
Solution Approach 2:
The patent adds a spatial dimension to the washing process by creating a vertical arrangement with the washing chamber on the upper level and the rinsing chamber on the lower level. This three-dimensional configuration allows simultaneous operation of both chambers without requiring additional time, effectively transforming a sequential time-based process into a parallel space-based process.
Data Source
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AI summary
The present invention is related to a laundry washing machine (10) comprising: a cabinet (20), a washing tub (30) housed inside the cabinet (20), a drum (50) rotatably housed inside the tub (30), an electric liquid supplying device (200) mounted in/on the drum (50) and configured for dispensing a liquid (3) in an inner region of the drum (30). The invention is also related to a method for operating such a laundry washing machine (10), comprising: - loading laundry within the drum (50); - activating the electric liquid supplying device (200) for dispensing a liquid (3) in an inner region of the drum (30).