A regenerative blower, often referred to as a side channel blower or ring blower, is a special kind of non-positive displacement blower. It operates on a unique regenerative principle to move air or gas. These blowers are particularly useful in situations where you need a high volume of airflow at low to moderate pressures or vacuums.
A regenerative blower works by using an impeller that's mounted on a shaft within a ring-shaped housing. As the impeller spins, air is drawn in through an inlet and then pushed outward into the narrow side channels of the housing. These channels guide the air back toward the base of the impeller blades several times before it finally exits through the outlet. This whole process creates a steady flow, building up pressure or vacuum without any pulsations.