Dehumidifier Compressor Frequency Control for Power-Saving Mode
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional refrigeration dehumidifiers face issues such as frost formation in low-temperature, low-humidity environments and lack a meaningful power-saving mode, leading to inefficient operation and high energy consumption.
Innovation Solution
A dehumidifier that automatically sets a target humidity value and compressor frequency during a power-saving mode, learning user preferences to optimize energy use while maintaining comfort levels, and adjusts operation based on humidity variations and power prices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the compressor rotation speed is reduced to save power, then energy consumption decreases, but the dehumidification efficiency deteriorates
Solution Approach 1:
The patent applies dynamics by making the compressor rotation speed adjustable and variable based on operating conditions. The control unit dynamically changes the compressor speed according to the difference between current and target humidity levels, allowing the system to optimize between power consumption and dehumidification efficiency in real-time rather than operating at fixed speeds.
Solution Approach 2:
The patent changes the operational parameters of the compressor by adjusting its rotation speed to different levels (first, second, and third rotation speeds) based on humidity conditions. This parameter adjustment allows the system to achieve power savings while maintaining adequate dehumidification performance by operating at lower speeds when humidity differences are small.
2Use of energy by moving object
If the compressor rotation speed is reduced in low-humidity environments, then power consumption decreases, but frost formation risk increases
Solution Approach 1:
The patent implements feedback control by continuously monitoring the humidity level and using this information to adjust the compressor rotation speed. The control unit receives humidity data, compares it with the target value, and based on the difference, determines the appropriate compressor speed. This feedback mechanism prevents frost formation by ensuring the compressor operates at sufficient speeds when needed while saving power when humidity conditions allow.
3Use of energy by moving object
If a power-saving mode is implemented by turning off the dehumidifier, then energy consumption decreases, but user comfort deteriorates due to insufficient humidity control
Solution Approach 1:
The patent applies partial action by operating the compressor at reduced rotation speeds rather than completely shutting it off during power-saving mode. The control unit selects from multiple rotation speed levels, using lower speeds (second or third rotation speeds) to maintain partial dehumidification functionality. This partial operation preserves user comfort and humidity control while achieving meaningful power savings compared to full operation.
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
Reduces energy consumption without compromising comfort, enhances user satisfaction, and prevents respiratory issues by maintaining optimal indoor humidity levels.
Implementation Method 1
a compressor
Implementation Method 2
condense moisture contained in the refrigerant
Implementation Method 3
condense moisture contained in the refrigerant
Data Source
AI summary
A dehumidifier sets a target humidity value based on an input humidity value received through an input interface during a power-saving mode, acquires an indication frequency of a compressor based on the target humidity value and a humidity value detected by a humidity sensor, and reduces the acquired indication frequency of the compressor at a specified rate to control the operation of the compressor.