Drum Washer Spray Control for Even Wetting and Lower Power
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Solution Overview
Problem
Conventional washing machines have inadequate water spray performance, leading to uneven wetting of laundry and sanitation issues due to water distribution problems, and high power consumption and overheating during washing cycles.
Innovation Solution
A washing method that includes a water supply step, a motor actuation step to rotate the drum, and a spray step where water is circulated and sprayed into the drum through gasket nozzles when the motor is stopped, improving water distribution and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water is sprayed through nozzles during motor operation, then washing performance is improved, but motor overheating occurs and power consumption increases
Solution Approach 1:
The patent implements periodic action by controlling the pump to operate intermittently rather than continuously. The control unit activates the pump during specific time intervals when washing performance is needed, then stops it to allow the motor to cool down and reduce power consumption. This periodic operation pattern resolves the contradiction between maintaining washing effectiveness and preventing motor overheating.
2Device complexity
If water is sprayed in one place or direction, then spray mechanism is simple, but laundry cannot be evenly wetted
Solution Approach 1:
The patent applies segmentation by dividing the single spray source into multiple nozzles positioned at different locations and angles around the drum interior. This segmentation allows water to be sprayed from multiple directions simultaneously, achieving even wetting of laundry distributed throughout the drum while maintaining relatively simple individual nozzle structures.
Solution Approach 2:
The patent implements local quality by positioning nozzles with different spray directions and angles at specific locations within the drum. Each nozzle is oriented to target specific areas, creating locally optimized spray patterns that collectively achieve uniform overall coverage. This allows the system to maintain simple nozzle designs while achieving precise control over water distribution.
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 method enhances washing performance by ensuring even wetting of laundry, reducing overheating, and minimizing power consumption by effectively utilizing water circulation and spray nozzles during specific washing cycles.
Implementation Method 1
a spray step of spraying water into the drum through a gasket nozzle by actuating a pump for circulating the water inside the tub
Data Source
AI summary
A method for washing of the present invention comprises: a water supply step of supplying water into a tub; a motor actuating step of actuating the motor for rotating a drum provided inside the tub; and a spray step of spraying water into the drum through a gasket nozzle by actuating a pump for circulating the water inside the tub, when the motor stops.