Washing Machine Pulsator Structure for High-Pressure Upstream Water Flow
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Solution Overview
Problem
Existing washing machines face challenges in forming a water flow with high ejection pressure, leading to insufficient washing performance, increased laundry abrasion, and uneven water levels within the drum, particularly due to complex structures and insufficient ejection pressure from centrifugal or fan-assisted methods.
Innovation Solution
A washing machine design featuring a centrifugal blade portion and guide portion that work together to create an upstream water flow with high ejection pressure, using centrifugal force to pressurize water and guide it through the pulsator, allowing for efficient water circulation and detergent distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a fan is added to the pulsator to eject water flow, then the ejection capability is improved, but the structure becomes complicated and ejection pressure remains insufficient
Solution Approach 1:
The patent merges the water flow ejection function into the pulsator structure itself by adding a water flow ejection portion with inclined surfaces, eliminating the need for a separate fan component. This integration maintains ejection capability while simplifying the overall structure.
Solution Approach 2:
The water flow ejection portion features inclined surfaces that guide water flow along curved paths, utilizing the angle of inclination to convert rotational motion into directed ejection flow. This geometric design enables effective water flow generation without additional mechanical components.
2Device complexity
If centrifugal force is used to eject water flow from the rotating pulsator, then the structure is simple, but the ejection pressure is insufficient
Solution Approach 1:
The water flow ejection portion incorporates inclined surfaces that redirect the centrifugal water flow at specific angles. This geometric modification transforms the purely radial centrifugal flow into a directed ejection flow with enhanced pressure and directionality, maintaining structural simplicity.
Solution Approach 2:
The patent modifies the flow parameters by introducing inclined surfaces that change the direction and pressure characteristics of the water flow. The angle of inclination serves as a controllable parameter to optimize ejection pressure without altering the fundamental centrifugal mechanism.
3Quantity of substance
If water flow rotates in the drum, then water circulation occurs, but the water level becomes uneven and laundry abrasion increases
Solution Approach 1:
Instead of allowing water to rotate with the drum in the conventional manner, the invention introduces a separate water flow ejection mechanism that directs water flow in the opposite direction to the drum rotation. This counter-rotating ejection flow creates more uniform water distribution and reduces laundry abrasion while maintaining effective water circulation.
Solution Approach 2:
The water circulation system is segmented into two independent components: the drum rotation that provides mechanical agitation, and the water flow ejection portion that provides controlled water circulation. This segmentation allows each component to perform its function independently, preventing the harmful effects of combined rotational water flow while maintaining both water circulation and gentle laundry treatment.
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 simplifies the pulsator structure, reduces laundry abrasion, maintains equilibrium water levels, and enhances washing performance by forming a high-pressure water flow that effectively circulates detergent within the drum.
Implementation Method 1
a water flow is formed by a centrifugal force of the rotating pulsator, and the water flow is ejected by the centrifugal force
Implementation Method 2
a guide portion configured to guide a water flow pressurized by the centrifugal blade portion to be ejected through the pulsator
Data Source
AI summary
A washing machine includes a cabinet for forming the appearance, a tub provided in the cabinet, a drum rotatably provided in the tub, a pulsator rotatably provided in the drum, a driving motor mounted outside the tub, and rotating the drum and the pulsator, and a water flow forming means provided below the pulsator, and forming a water flow ejected into the drum as an upstream flow.