Washing Machine Cycle for Delicate Garments Without Mechanical Stress
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Solution Overview
Problem
Delicate garments such as jackets and trousers are often damaged by traditional washing programs, necessitating dry cleaning or industrial washing machines, which are inconvenient and costly for frequent use.
Innovation Solution
A washing machine control method involving low-temperature wash cycles with slow rotational movements, substantial water usage, and multiple rinses to prevent damage, using at least 20 liters of water, rotating at 35 rpm or less, with spin speeds not exceeding 100 rpm to prevent mechanical stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional washing programs are used, then washing efficiency is improved, but delicate garments are damaged
Solution Approach 1:
The patent applies parameter changes by modifying multiple washing parameters simultaneously: reducing drum rotation speed to 35 rpm or less, maintaining water temperature at 25°C or lower, and extending washing time to 2-5 seconds per rotational movement. These parameter adjustments transform the aggressive traditional washing process into a gentle cycle that effectively cleans delicate garments without causing mechanical damage
Solution Approach 2:
The patent implements periodic action through alternating phases of drum rotation and stationary periods. The drum performs rotational movements at low speed followed by stationary intervals, creating a rhythmic washing pattern. This periodic action allows garments to be gently agitated during rotation phases and rest during stationary phases, preventing continuous mechanical stress while maintaining washing effectiveness
2Manufacturing precision
If dry cleaning or industrial washing machines are used, then garment cleaning quality is improved, but convenience and cost are worsened
Solution Approach 1:
The patent enables self-service by allowing household washing machines to perform delicate garment washing without requiring users to transport items to professional laundries. The controlled low-speed rotation program empowers consumers to wash delicate garments at home, eliminating the need for external laundry services and providing convenient at-home care for sensitive fabrics
3Productivity
If high-speed spin is used, then water removal efficiency is improved, but mechanical stress on garments increases
Solution Approach 1:
The patent applies parameter changes by capping the spin speed at 100 rpm or less, significantly lower than traditional high-speed spinning. This parameter adjustment reduces centrifugal force and mechanical stress on delicate garments while still achieving adequate water removal through the extended washing cycle and multiple rinse phases
4Use of energy by moving object
If low water amount is used, then energy consumption is reduced, but washing effectiveness decreases
Solution Approach 1:
The patent applies parameter changes by maintaining water temperature at low levels (25°C or less) throughout the washing cycle. This temperature parameter control reduces energy consumption for heating while compensating for lower thermal cleaning power through extended washing time and gentle mechanical agitation, achieving effective cleaning with reduced energy input
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 allows for effective washing of delicate garments without damage, reducing travel and laundry costs by maintaining garment quality through gentle mechanical action and controlled water usage.
Implementation Method 1
a series of rotational movements of said drum are then performed at a speed not exceeding 35 rpm
Implementation Method 2
a spin is then carried out with a speed not exceeding 100 rpm in order to obtain a satellization of the garments in the drum
Implementation Method 3
an initial warming of the wash water is performed up to a reference temperature not exceeding 25° C
Data Source
AI summary
Method for controlling a washing machine comprising the execution of a wash cycle wherein: an amount of water of at least 20 litres is loaded in the machine's drum; an initial warming of the wash water is performed up to a reference temperature not exceeding 25° C; a series of rotational movements of said drum are then performed at a speed not exceeding 35 rpm;a spin is then carried out with a speed not exceeding 100 rpm in order to obtain a satellization of the garments in the drum.