Dehumidifier
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Solution Overview
Problem
Conventional dehumidifiers struggle to set optimal adsorption and desorption times for desiccant materials based on varying air temperature and humidity conditions, leading to inefficient dehumidification operations.
Innovation Solution
A dehumidifier system with a refrigerant circuit, a moisture adsorption member, and a controller that switches between adsorption and desorption modes based on temperature and humidity readings, using an operation time map to determine the appropriate times for each mode, allowing for adaptive dehumidification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed rotation speed is used for the desiccant material, then the device structure is simple, but the adsorption and desorption times cannot be optimized for different temperature and humidity conditions
Solution Approach 1:
The patent changes the operational parameters (adsorption time and desorption time) based on detected temperature and humidity conditions. The control unit adjusts these time parameters dynamically according to environmental conditions, allowing the system to adapt to different operating environments without requiring a completely complex control architecture.
Solution Approach 2:
The patent implements a feedback mechanism where temperature and humidity detection units continuously monitor environmental conditions, and the control unit uses this feedback information to adjust the adsorption and desorption times. This closed-loop control enables the system to respond to changing conditions while maintaining reasonable structural simplicity.
2Reliability
If the adsorption and desorption times are extended to ensure complete moisture removal, then dehumidification effectiveness is improved, but energy consumption increases
Solution Approach 1:
The patent employs dynamic time adjustment for adsorption and desorption phases based on real-time temperature and humidity detection. Rather than using fixed extended times, the system dynamically optimizes the duration of each phase to achieve effective dehumidification with minimal energy consumption, adapting to current environmental conditions.
Solution Approach 2:
The control unit modifies operational parameters (specifically the durations of adsorption and desorption phases) according to detected environmental conditions. This parameter adjustment allows the system to achieve reliable dehumidification effectiveness while avoiding unnecessary energy consumption that would result from fixed, overly conservative time settings.
3Productivity
If the desiccant material rotates faster to reduce cycle time, then productivity increases, but the adsorption and desorption processes become incomplete
Solution Approach 1:
The patent uses dynamic rotation speed control of the desiccant material based on environmental conditions and process stage. During adsorption phase, the rotation speed is optimized for moisture uptake, and during desorption phase, it is adjusted for moisture release. This dynamic adjustment allows the system to maintain high productivity while ensuring complete moisture removal at each phase.
Solution Approach 2:
The patent implements periodic alternation between adsorption and desorption phases with optimized durations for each. By structuring the operation as periodic cycles with appropriately timed phases, the system achieves high productivity through continuous operation while ensuring that each adsorption and desorption process completes effectively before transitioning to the next phase.
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 enables efficient dehumidification by optimizing adsorption and desorption timing according to the specific conditions, enhancing the dehumidifier's performance and reducing energy consumption.
Implementation Method 1
a moisture adsorption member (20) arranged between the first heat exchanger (12a) and the second heat exchanger (12b) to perform adsorption of moisture contained in air flowing in an air path (1) and desorption of the adsorbed moisture
Implementation Method 2
cooling and heating action of the heat pump
Implementation Method 3
a first heat exchanger (12a) caused to serve as an evaporator
Implementation Method 4
a second heat exchanger (12b) caused to serve as a condenser
Data Source
AI summary
A dehumidifier includes a compressor, a flow path switch, a first heat exchanger, a pressure-reducing device, a second heat exchanger, a moisture adsorption member that is arranged between the first heat exchanger and the second heat exchanger, a fan, a storage unit configured to store an operation time map, and a temperature and humidity detection unit. The controller controls the flow path switch that switches a first operation mode to adsorb moisture by the moisture adsorption member and a second operation mode to desorb moisture adsorbed by the moisture adsorption member. The controller acquires a first time and a second time corresponding to the temperature and humidity detected by the temperature and humidity detection unit from the operation time map, and controls the flow path switch in accordance with the acquired first time and second time.