Evaporative coolers (also known as eco-air conditioners, evaporative water-cooled air conditioners, coolers, air coolers, and water-cooled air conditioners) are a complete evaporative cooling and air exchange system that combines cooling, air exchange, dust prevention, and odor removal. Besides providing fresh air and temperature reduction for industrial workshops and public spaces, the key feature of eco-air conditioners is their energy-saving and environmental protection. They are a new eco-friendly product without compressors, refrigerants, or copper pipes. The evaporative cooler operates on the principle of water evaporation, achieving cooling through a physical process, thereby solving the issue of excessive "freon" emissions from conventional air conditioners. It utilizes a wet pad as the cooling medium, where water flows evenly down the wavy surface of the wet pad from top to bottom, ensuring uniform moistening. When the fan draws air, it creates pressure that forces unsaturated air to pass through the porous, moist wet pad surface. This converts a large amount of latent heat from the air, causing the indoor air's dry bulb temperature to drop close to the wet bulb temperature, increasing the humidity. This transforms dry, hot air into clean, cool air, thereby achieving both cooling and humidification.