The three-layer wet curtain of the portable air cooler with three wind speed modes has a larger water film contact area, so that the air is fully in contact with the water when it flows through the multi-layer wet curtain, thereby improving the evaporative cooling efficiency and making the cooling effect more obvious. The multi-layer structure allows the air to be cooled multiple times to ensure a lower air outlet temperature, which is particularly suitable for high temperature and dry environments. In addition, the uniform distribution of the three-layer wet curtain avoids the problem of local over-wetting or over-drying that may occur in the single-layer wet curtain, making the cooling process more stable. In contrast, due to the limited water film contact area and low evaporation efficiency of the single-layer wet curtain, it may not achieve the ideal cooling effect in a high temperature environment, and the air is only cooled once, and the cooling capacity is relatively weak.
The multi-layer filtration structure of the three-layer wet curtain can more effectively absorb dust, pollen and other fine particles in the air, improving the cleanliness of the air outlet. Since the water circulates in the multi-layer wet curtain, impurities are not easy to accumulate on a single wet curtain, reducing the risk of clogging and extending the service life of the wet curtain. The filtering capacity of a single-layer wet curtain is limited, and dust easily adheres to the surface. After long-term use, it may affect the ventilation effect, and even breed bacteria or produce odors, so it needs more frequent cleaning and maintenance.
The multi-layer superposition design of the three-layer wet curtain disperses the water pressure and airflow pressure, reducing the problem of easy wear of the single-layer wet curtain, thereby extending the overall service life. At the same time, the multi-layer structure provides better support, the wet curtain is not easy to collapse or deform, and can maintain stable cooling performance for a long time. In contrast, a single-layer wet curtain may be deformed by water scouring and airflow impact after long-term use, affecting the cooling effect. Especially in an environment with high humidity, excessive water absorption may cause the wet curtain to loosen, further reducing ventilation efficiency.
The three-layer wet curtain, with its multi-layer evaporative cooling mechanism, is not only suitable for dry climates, but also can maintain a good cooling effect in semi-humid environments. Even in high-speed wind mode, the multi-layer wet curtain can ensure that the air is fully cooled, and the cooling efficiency will not be reduced due to increased wind speed. The cooling effect of a single-layer wet curtain will be significantly weakened in a humid environment. At the same time, when running at high wind speed, the air may not have enough time to cool down, resulting in an unsatisfactory outlet temperature.