Drum Washer Recirculation Pump Layout for Faster Laundry Soaking
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Solution Overview
Problem
Conventional drum washing machines require a long time to soak laundry due to inefficient water circulation, leading to incomplete mixing of detergent and water, which decreases washing efficiency.
Innovation Solution
A drum washing machine with a circulation pump and hoses that recirculate washing water from a tub to the drum, using an inlet pipe and guide to ensure efficient water distribution and mixing within the drum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If washing water is supplied to the tub without circulation, then the structure is simple, but the washing time is long and washing efficiency is poor
Solution Approach 1:
The circulation system is segmented into distinct functional components: circulation pump, circulation hoses with multiple outlets, and inlet pipe with guide. This segmentation allows each component to perform its specific function efficiently while maintaining overall system simplicity.
Solution Approach 2:
The patent uses hydraulic principles by implementing a circulation pump and hose system to move washing water through the drum. The circulation hoses and inlet pipe create fluid pathways that distribute water effectively, applying hydraulic concepts to improve water circulation and washing efficiency.
2Loss of time
If washing water is supplied slowly without circulation, then the system is simple, but the soaking time is long
Solution Approach 1:
The circulation system performs preliminary action by actively distributing washing water throughout the drum before the main washing cycle begins. The pump and hose system pre-soak the laundry by circulating water in advance, reducing the required soaking time.
Solution Approach 2:
The circulation system maintains continuous useful action by constantly moving washing water through the drum during the washing cycle. The circulation pump operates continuously to ensure water is constantly circulated and distributed, preventing stagnation and improving soaking efficiency.
3Productivity
If detergent and washing water are not mixed completely, then the structure is simple, but the washing efficiency deteriorates
Solution Approach 1:
The system uses dynamic water circulation instead of static mixing. The circulation pump creates moving water flow that dynamically mixes detergent and washing water as water circulates through the hoses and enters the drum, eliminating the need for mechanical mixing devices.
Solution Approach 2:
Hydraulic mixing is achieved by using the circulation system to create turbulent water flow that naturally mixes detergent and washing water. The pump-driven circulation creates sufficient fluid dynamics for effective mixing without additional mechanical mixing components.
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
This design significantly reduces washing time by ensuring thorough soaking and mixing of laundry with detergent, enhancing washing and rinsing performance.
Implementation Method 1
a circulation pump for pumping the washing water in the tub and re-supplying the washing water to the inside of the drum
Implementation Method 2
an inlet pipe, connected to one circulation hose, for guiding the washing water guided by the circulation hose to the inside of the drum
Data Source
AI summary
A drum washing machine includes a cabinet forming an external housing of the washing machine, and a tub is installed in the cabinet for containing washing water. A drum is rotatably installed in the tub. A circulation pump pumps the washing water in the tub and resupplies the washing water to the inside of the drum and at least one circulation hose provides a circulation path between the circulation pump and the tub.