dehumidifier
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Solution Overview
Problem
Dehumidifiers face inefficiencies due to the supercooling phenomenon in evaporators, which affects the utilization of cold air and results in low dehumidification efficiency, as the coldness of air varies across different positions and flow rates within the device.
Innovation Solution
The dehumidifier design includes a liquid condensing device with a specific arrangement of liquid condensing pipes, where the density and contact area of pipes are optimized to enhance heat exchange, particularly in the second region with a higher density of pipes, improving the utilization of low-temperature air and increasing dehumidification efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the evaporator is used for cooling air, then the air temperature is reduced, but the coldness utilization is insufficient due to supercooling phenomenon and varying flow rates
Solution Approach 1:
The liquid condensing device is divided into three regions (first, second, and third regions) with different pipe densities. The second region has a higher density of liquid condensing pipes to match the lower air flow rate and higher coldness in that area, optimizing local heat exchange efficiency and resolving the contradiction between temperature reduction and coldness utilization.
2Quantity of substance
If the dehumidification capacity is increased, then more moisture is removed from air, but the efficiency is reduced due to supercooling and uneven coldness distribution
Solution Approach 1:
Different regions of the liquid condensing device have different pipe densities tailored to local conditions. The second region with higher pipe density handles the area with lower air flow and higher coldness, maximizing dehumidification efficiency while increasing overall moisture removal capacity without the penalties of supercooling.
Solution Approach 2:
The patent introduces a spatial dimension to the heat exchange process by creating three distinct regions with varying pipe densities along the air flow path. This dimensional approach allows optimization of heat exchange at different locations, improving both dehumidification capacity and efficiency simultaneously.
3Speed
If the air flow rate varies across different positions, then the cooling effect is uneven, but this leads to wasted coldness and reduced overall performance
Solution Approach 1:
The liquid condensing device employs region-specific pipe densities that correspond to local air flow rates. The second region has higher pipe density where air flow is lower, ensuring adequate heat exchange without causing coldness waste, while other regions have appropriate pipe densities matched to their respective flow conditions.
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 improves the utilization of cold air, leading to enhanced dehumidification efficiency by ensuring sufficient heat exchange and reducing the impact of supercooling, resulting in increased dehumidification capacity and performance.
Implementation Method 1
the dehumidifier performs heat exchange with humid air through a heat exchanger, so that moisture in the air condenses into condensed water
Implementation Method 2
moisture in the air condenses into condensed water
Implementation Method 3
The air in the first air channel passes through the evaporator, outer surfaces of the plurality of liquid condensing pipes, and the condenser in sequence
Implementation Method 4
The air in the first air channel passes through the evaporator, outer surfaces of the plurality of liquid condensing pipes, and the condenser in sequence, and then enters the fan and is discharged from the dehumidifier by the fan
Data Source
AI summary
A dehumidifier includes a housing, an evaporator, a condenser, a liquid condensing device, and a fan. The evaporator and the condenser are arranged in sequence in a first direction. A plurality of liquid condensing pipes in the liquid condensing device extend in a second direction, are communicated with a second air channel, and are located in a first region, a second region, and a third region. The first region, the second region, and the third region are arranged in sequence in a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. A contact area between the liquid condensing pipes in the second region and air in a first air channel is greater than contact areas between the air in the first air channel and the liquid condensing pipes in the first region and the third region.