Dehumidifier
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Solution Overview
Problem
Conventional dehumidifiers consume excessive energy due to high heat exchange capacity in the evaporator when high-temperature and high-humidity air is directly processed, leading to increased compressor power consumption.
Innovation Solution
The dehumidifier incorporates a cold energy storage system using stacked ventilation boards with perpendicular ventilation holes to pre-cool air, reducing the evaporator's heat exchange capacity and incorporating a refrigeration circulation system with a compressor, evaporator, and condenser, along with a humidity sensor and wind wheel for intelligent operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high-temperature and high-humidity air directly passes through the evaporator, then the heat exchange capacity of the evaporator is larger, but the power of the compressor becomes larger and energy consumption increases
Solution Approach 1:
The patent applies preliminary action by introducing a pre-cooling section before the evaporator where air is pre-cooled by cold air from the cold storage chamber. This preliminary cooling reduces the temperature and humidity of the air entering the evaporator, thereby reducing the heat exchange capacity requirement and compressor power consumption while maintaining dehumidification effectiveness.
2Quantity of substance
If the evaporator cools air to below dew point temperature, then moisture is condensed and absolute moisture content is lowered, but the compressor power consumption increases
Solution Approach 1:
The pre-cooling section performs preliminary cooling and partial dehumidification before the evaporator, reducing the moisture content of air entering the evaporator. This preliminary action reduces the workload of the evaporator and compressor while still achieving the required final moisture content level.
Solution Approach 2:
The cold air from the cold storage chamber acts as an intermediary cooling medium. Instead of the compressor directly cooling high-temperature air, the cold storage chamber's cold air is used as an intermediate cooling stage, reducing the direct burden on the compressor and refrigeration cycle.
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 design reduces compressor power consumption, enhances dehumidification capacity, and improves energy efficiency by pre-cooling air before it reaches the evaporator, thereby saving energy and improving performance.
Implementation Method 1
the evaporator is used to cool the air so that moisture in the air is condensed into water droplets
Implementation Method 2
The cold energy storage is disposed between the evaporator and the water tray for collecting the water droplets, absorbing cold energy and cooling the passing air
Implementation Method 3
The condenser is used to heat the air to form dry air
Data Source
AI summary
A dehumidifier includes a dehumidification system. The dehumidification system includes an air inlet, a cold energy storage, an evaporator, the cold energy storage, a condenser, and an air outlet for air to pass in sequence. The air inlet and the air outlet are disposed on a main body of the dehumidifier. The evaporator, the cold energy storage, and the condenser are fixedly mounted in the main body. The evaporator is used to cool the air so that moisture in the air is condensed into water droplets. A water tray is provided under the evaporator to collect the water droplets. The cold energy storage is disposed between the evaporator and the water tray for collecting the water droplets, absorbing cold energy and cooling the passing air. The condenser is used to heat the air to form dry air. The cold energy storage is to cool the air in advance, so that the moist and hot air becomes low-temperature and high-humidity air. The dehumidifier can reduce the power of the compressor, save energy, improve the dehumidification capacity, and improve the energy efficiency.