High-Frequency Laundry Drying for Low-Temperature Water Evaporation
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Solution Overview
Problem
Conventional laundry drying machines face inefficiencies in power consumption and drying time due to low drying performance and potential damage from high temperatures, as they rely on hot air to evaporate water, which requires high energy and can denature clothes.
Innovation Solution
A laundry treatment machine incorporating a high frequency drying apparatus that uses an oscillating electric field between an anode and a cathode to dry clothes, minimizing structural modifications to existing washers and dryers, and allowing for efficient drying at lower temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hot air drying method is used, then water evaporation from clothes is achieved, but power consumption increases and drying performance remains low
Solution Approach 1:
The patent replaces the thermal convection system (heater and blower) with a high frequency electromagnetic field system. The high frequency generator produces an oscillating electric field that directly interacts with water molecules in clothes, causing molecular vibration and rapid evaporation without requiring heated air circulation, thereby substituting a mechanical thermal system with an electromagnetic field-based system
Solution Approach 2:
The patent changes the drying mechanism from thermal convection to high frequency electromagnetic oscillation. By applying high frequency electric fields (typically in the RF range), water molecules are directly excited and vibrate intensely, generating internal heat through molecular friction that rapidly evaporates moisture, fundamentally changing the physical parameter of energy transfer from external thermal convection to internal electromagnetic excitation
2Productivity
If air temperature is increased to 100 degrees Celsius for water evaporation, then drying efficiency improves, but cloth damage and denaturalization occur
Solution Approach 1:
The patent replaces high temperature thermal drying with high frequency electromagnetic field drying. The oscillating electric field directly energizes water molecules, causing them to vibrate and evaporate at lower ambient temperatures, thereby substituting a high-temperature thermal process with a low-temperature electromagnetic process that avoids thermal damage to fabric
Solution Approach 2:
The patent changes the operating temperature parameter from high temperature (100°C or above) to low temperature (ambient or slightly elevated). The high frequency electromagnetic field enables water evaporation at much lower temperatures by directly exciting water molecules, fundamentally altering the temperature parameter from a harmful high value to a safe low value that preserves fabric integrity
3Reliability
If continuous exhaust of heated air is performed, then water vapor is removed from the drum, but internal temperature drops and operation time of heater increases
Solution Approach 1:
The patent replaces the continuous exhaust system with a condensation-based moisture removal system. The high frequency electromagnetic field rapidly evaporates moisture from clothes, and the resulting water vapor is condensed on the cooler inner wall of the drum, allowing moisture removal without continuous exhaust, thereby substituting a lossy thermal convection system with a more efficient condensation system
Solution Approach 2:
The patent enables continuous high frequency electromagnetic field application throughout the drying cycle without interruption for exhaust operations. The oscillating electric field continuously energizes water molecules, maintaining constant evaporation rate, and the condensation process continuously removes moisture, creating a continuous useful action that eliminates downtime associated with heater operation and exhaust cycles
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 high frequency drying method reduces power consumption and drying time while preventing cloth damage by efficiently evaporating water using an electric field, maintaining high drying efficiency across varying loads and temperatures below 30°C, outperforming traditional hot air drying methods.
Implementation Method 1
a high frequency drying apparatus comprising: an anode to which a high frequency is applied, a cathode electrically insulated from the anode to form an oscillation electric field between the anode and the cathode inside the drying space
Implementation Method 2
The high frequency drying apparatus uses an oscillating electric field between an anode and a cathode to dry clothes, minimizing structural modifications to existing washers and dryers
Data Source
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AI summary
A laundry treatment machine is provided. The laundry treatment machine includes at least one main body, a pedestal, and a high frequency drying apparatus. The at least one main body includes a drum rotatably disposed therein. The pedestal supports the main body and provides a certain drying space for receiving a drying subject. The high frequency drying apparatus includes an anode to which a high frequency is applied and a cathode electrically insulated from the anode to form an oscillation electric field between the anode and the cathode inside the drying space.