Pulsator Water Stream Structure for Stronger Washer Circulation
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Solution Overview
Problem
Washing machines face challenges in securing sufficient spouting pressure for water streams, leading to inefficient detergent circulation and increased foreign substance accumulation, which can cause clogging and recontamination, while also causing abrasion and uneven water distribution, and failing to effectively untangle twisted laundry.
Innovation Solution
A washing machine design featuring a pulsator with a centrifugal blade unit and guide unit that generates a strong water stream through centrifugal force, combined with a filter cap to collect foreign substances and a check valve to manage water flow, ensuring effective detergent circulation and balanced water levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a separate fan is added to the pulsator to spout water stream, then the spouting pressure is improved, but the structure of the pulsator becomes complicated
Solution Approach 1:
The patent combines the water stream spouting function directly into the pulsator structure by forming a water stream passage through the pulsator, eliminating the need for a separate fan. This merging approach achieves strong spouting pressure while maintaining simple pulsator structure.
Solution Approach 2:
The patent uses hydraulic principles by forming a water stream passage through the pulsator that utilizes water pressure and flow dynamics to generate the spouted water stream, achieving effective spouting pressure through fluid mechanics rather than mechanical fan action.
2Productivity
If washing water circulates between the pulsator and drum, then washing is performed, but foreign substances accumulate causing clogging and recontamination
Solution Approach 1:
The patent extracts foreign substances from the circulating washing water by providing a filter cap that collects lint and contaminants. This separation removes harmful factors from the washing system while maintaining the beneficial water circulation for washing efficiency.
Solution Approach 2:
The filter cap acts as an intermediary element between the water circulation system and the washing process, intercepting foreign substances and preventing them from causing clogging or recontamination while allowing clean water to continue circulating.
3Productivity
If water stream is spouted through pulsator, then detergent circulation is improved, but laundry abrasion increases
Solution Approach 1:
The patent applies local quality by directing the spouted water stream specifically onto the drum surface where water collection occurs, rather than indiscriminately throughout the drum. This localized application improves detergent circulation efficiency while reducing unnecessary water impact on laundry, thereby minimizing abrasion.
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 achieves strong spouting pressure for efficient detergent circulation, reduces laundry abrasion, maintains balanced water levels, and effectively untangles twisted laundry, improving overall washing performance while preventing clogging and recontamination.
Implementation Method 1
a centrifugal blade unit rotatably disposed under the pulsator and spouting washing water introduced between the tub and the drum by a centrifugal force due to a rotation
Implementation Method 2
a check valve opening the spouting outlet by the water stream formed by the water stream generation unit
Data Source
AI summary
Provided is a washing machine. The washing machine includes a tub, a drum, a pulsator, a water stream generation unit, a filter cap, and a check valve. The tub contains washing water. The drum is rotatably disposed in the tub and receiving laundry. The pulsator is rotatably disposed inside the drum and has a spouting outlet. The water stream generation unit is disposed under the pulsator and forms a water stream spouted through the spouting outlet by circulating washing water contained between the tub and the drum. The filter cap collects foreign substances floating in washing water spouted through the spouting outlet. The check valve opens the spouting outlet by the water stream formed by the water stream generation unit.