Temperature-Switching Dehumidification for Low-Energy Moisture Release
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Solution Overview
Problem
Conventional dehumidifying devices require significant thermal energy to release absorbed moisture, leading to inefficiency, and polymeric moisture-absorbing materials struggle to release moisture from air effectively, often leaving water droplets on the surface.
Innovation Solution
A dehumidifying device utilizing a moisture-absorbing material that exhibits hydrophilicity below a temperature sensitive point and hydrophobicity above it, with a heating section to raise the material's temperature and a rotating section to release moisture as a waterdrop via centrifugal force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional dehumidifying devices heat moisture-absorbing material to release absorbed moisture, then moisture release is achieved, but large amount of thermal energy is consumed
Solution Approach 1:
The patent changes the temperature parameter of the moisture-absorbing material from high temperature (conventional method requiring significant heating) to low temperature (near ambient temperature) by utilizing the phase change properties of the material at specific temperature thresholds, thereby reducing thermal energy consumption while maintaining moisture release capability
Solution Approach 2:
The patent employs a moisture-absorbing material that undergoes phase transition between hydrophilic and hydrophobic states at a specific temperature sensitive point, allowing the material to automatically release absorbed moisture through phase change rather than requiring continuous high-temperature heating, thus improving energy efficiency
2Productivity
If polymeric moisture-absorbing material is heated to release absorbed moisture, then moisture release is achieved, but water droplets remain attached to the material surface
Solution Approach 1:
The patent changes the temperature parameter to be at or near ambient temperature rather than high temperature, which prevents water droplets from adhering strongly to the material surface while still enabling moisture release through phase transition of the moisture-absorbing material
Solution Approach 2:
The patent converts the previously harmful effect of water droplet adhesion into a beneficial feature by operating at temperatures where water droplets naturally form and can be easily collected, transforming the problem of water droplet removal into an opportunity for efficient moisture harvesting
3Productivity
If conventional dehumidifying devices use heat exchangers to cool heated air, then moisture condensation is achieved, but device complexity increases
Solution Approach 1:
The patent extracts and removes the heat exchanger component from the dehumidifying device, replacing it with a moisture-absorbing material that performs both moisture absorption and release functions through temperature-sensitive phase transitions, thereby simplifying the device structure while maintaining condensation capability
Solution Approach 2:
The moisture-absorbing material serves multiple functions: it absorbs moisture from air during normal conditions and releases moisture through phase transition at elevated temperatures, eliminating the need for separate heat exchanger and heating components, thus reducing device complexity
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 configuration allows for efficient moisture release from the dehumidifying material, reducing energy consumption and eliminating the need for additional air flow components, while effectively managing moisture absorption and release cycles.
Implementation Method 1
a moisture-absorbing material that (i) exhibits hydrophilicity in a temperature range equal to or lower than a temperature sensitive point
Implementation Method 2
exhibits hydrophobicity in a temperature range higher than the temperature sensitive point
Implementation Method 3
a heating section which heats, to the temperature range higher than the temperature sensitive point, the moisture-absorbing material that has absorbed moisture
Implementation Method 4
a rotating section which rotates the at least one base material... so that the moisture, which has been absorbed by the moisture-absorbing material, is released as a waterdrop by a centrifugal force
Data Source
AI summary
A dehumidifying device configured such that a dehumidifying material having absorbed moisture can efficiently release moisture. The dehumidifying device carries out dehumidification with a polymeric moisture-absorbing material that (i) exhibits hydrophilicity in a temperature range equal to or lower than a temperature sensitive point which is a given temperature and (ii) exhibits hydrophobicity in a temperature range higher than the temperature sensitive point. The dehumidifying device includes: a substrate to which the polymeric moisture-absorbing material is fixed; a heat generating member which heats, to the temperature range higher than the temperature sensitive point, the polymeric moisture-absorbing material that has absorbed moisture; and a moisture absorbing unit motor which rotates the substrate, so that the moisture, which has been absorbed by the polymeric moisture-absorbing material that is heated to the temperature range higher than the temperature sensitive point, is released as a waterdrop by a centrifugal force.