A circulating air separator is a device that circulates air using a built-in fan. It draws indoor air into the purifier, where the fan repeatedly filters and purifies the air until a high purification rate is achieved before releasing it. This type of device reduces reliance on external equipment, avoids airflow loss, and ensures environmental friendliness, thus being considered a highly efficient, environmentally friendly, and economical particulate matter cleaning device.
A vertical air intake duct, on the other hand, primarily purifies air through natural airflow. It is typically located at the top of the unit, drawing in indoor air through an intake vent. The air then passes through the purifier's filter and purification layers before being released from the bottom outlet. This design allows for rapid purification of indoor air and is particularly suitable for larger spaces.