Steam Generator Water Discharge to Prevent Washer Scale Buildup
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Solution Overview
Problem
Conventional washing machines with steam generators face issues with foreign substances, such as lime components, precipitating at the bottom, leading to malfunction and reduced efficiency due to unclear water intake, which affects the water level sensor and steam generation performance.
Innovation Solution
A method for controlling the washing machine that involves automatically discharging water from the steam generator during operation, either at predetermined times or when specific conditions are met, to prevent foreign substances from precipitating, using an auxiliary opening or valve to overflow water into the drum or selectively discharge it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If water is continuously supplied into the steam generator, then steam generation performance is maintained, but foreign substances precipitate at the bottom of the steam generator
Solution Approach 1:
The patent implements periodic discharge of water from the steam generator at predetermined intervals during the washing machine operation. This periodic action removes accumulated foreign substances before they can precipitate and cause malfunction, while maintaining continuous steam generation capability through controlled water supply cycles.
Solution Approach 2:
The patent extracts and removes water containing dissolved foreign substances from the steam generator through a discharge valve. By extracting this contaminated water periodically, the system prevents precipitation of lime components and other foreign substances that would otherwise accumulate and interfere with steam generation.
2Reliability
If water is discharged from the steam generator to remove foreign substances, then steam generator reliability is improved, but steam generation efficiency decreases
Solution Approach 1:
The system performs water discharge at predetermined intervals rather than continuously, maintaining steam generation efficiency by minimizing interruption time. The periodic discharge removes foreign substances to maintain reliability while the brief duration of each discharge event limits impact on overall steam generation productivity.
Solution Approach 2:
The patent discharges only a portion of the water from the steam generator - specifically enough to remove accumulated foreign substances - rather than completely draining and refilling the system. This partial action maintains reliability by removing contaminants while minimizing water loss and time interruption to steam generation.
3Object-affected harmful factors
If manual discharge of water from steam generator is required, then foreign substances are removed, but user convenience decreases
Solution Approach 1:
The washing machine system automatically performs water discharge from the steam generator at predetermined intervals without requiring user intervention. The control unit autonomously operates the discharge valve to remove water containing foreign substances, making the system self-maintaining and eliminating the need for manual cleaning operations by the user.
Solution Approach 2:
The system uses a control unit that monitors operation time and automatically triggers water discharge at predetermined intervals. This feedback-based timing mechanism ensures foreign substances are removed before they can cause malfunction, maintaining both reliability and user convenience through automated decision-making based on operational parameters.
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 approach enhances washing efficiency by preventing foreign substance precipitation and maintaining the steam generator's performance, ensuring effective steam generation and user convenience by automating the process.
Implementation Method 1
a heater 320 for heating the water held within the steam generator 50
Implementation Method 2
The water level sensor 300 senses the water level held within the steam generator 50
Implementation Method 3
a temperature sensor 57 is provided for sensing the temperature of water as well as steam heated by the heater 320
Data Source
AI summary
A method for controlling a washing machine is disclosed. The method for controlling a washing machine having a steam generator includes a step of automatically discharging water of the steam generator outside of the steam generator during the operation of the washing machine. Therefore, according to the present invention, foreign substances may be efficiently prevented from precipitating in the steam generator.