Steam Generator Temperature Feedback in Washing Machines
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Solution Overview
Problem
Conventional washing machines consume a significant amount of water, leading to waste and inefficiency, and often fail to detect errors or malfunctions, which can result in damaged laundry and reduced wash efficiency.
Innovation Solution
A washing machine and control method that utilizes a steam generator with a temperature sensor and control unit to measure and compare initial and heated water temperatures, detecting abnormalities and adjusting washing cycles accordingly, while also optimizing water usage by selecting between steam and non-steam modes based on initial temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If a washing machine uses conventional water-based washing methods, then it can effectively wash laundry, but it consumes a significant amount of water leading to waste
Solution Approach 1:
The patent utilizes phase transition of water from liquid to steam form. The steam generator heats water to produce steam, which is then supplied to the drum for washing. This phase transition allows the washing machine to use steam instead of liquid water, significantly reducing water consumption while maintaining washing effectiveness through the thermal and mechanical action of steam on the laundry.
2Reliability
If the washing machine operates without temperature monitoring, then the system is simpler, but it cannot detect errors or malfunctions in the steam generator
Solution Approach 1:
The patent implements a feedback mechanism using a temperature sensor that continuously monitors the water temperature in the steam generator and sends this information to the control unit. The control unit compares the measured temperature with expected values and can detect abnormalities or malfunctions in the steam generator. This feedback loop enables reliable error detection while keeping the system relatively simple by using basic temperature sensing and comparison logic.
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 solution reduces water waste, enhances wash efficiency, and automatically detects and responds to errors or malfunctions, minimizing laundry damage and optimizing energy use.
Implementation Method 1
heating the water within the steam generator for a set time
Implementation Method 2
measuring an initial temperature of water supplied within a steam generator
Data Source
AI summary
A washing machine and control method thereof are disclosed, by which water waste is reduced and by which an error or malfunction of the washing machine is detected and by which the detected error or malfunction of the washing machine is notified to a user. The present invention includes the steps of measuring an initial temperature of water supplied within a steam generator for providing steam to a drum, heating the water within the steam generator for a set time, measuring a temperature of the heated water within the steam generator, calculating a difference between the heated water temperature and the initial water temperature, and deciding a presence or non-presence of abnormality of the steam generator based on the calculated temperature difference.