Ring Blower by Halward

Industrial Ring blowers are manufactured for both pressure and vacuum service. When a ring blower is used for pressure, it is usually configured for use as air supply units or compressors, while vacuum blowers are frequently used as vacuum pumps or fume/dust exhausters.

All regenerative ring blowers consist of an impeller that spins within a housing. This housing contains both an intake channel and an outboard channel; hence the name side channel blowers. When the impeller moves past the intake port, air is drawn in and trapped between the impeller blades. As the impeller continues to turn, the air is pushed both inward and outward through both channels, and this process continues until the impeller stops rotating.

It is this regenerative process that allows the side channel blower to function as both a pressure blower and a vacuum blower. While the air trapped between two impeller blades represents only a small pressure increase, the sum total of the blades, from intake to outlet, is capable of powerful continuous operating pressures.