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Regenerative Blowers
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Regenerative Blowers

 

Regenerative blowers are low-pressure, high-volume blowers that generate centrifugal airflow. They are used in compression blowers, vacuum blowers, and industrial blower applications. Compression regenerative blowers can be used or configured as a compressor or air supply unit. Vacuum regenerative blowers can be used or configured as a vacuum pump or exhauster for removal or suction of air, fumes, or gases. Selecting regenerative blowers requires an analysis of compressor or vacuum specifications, power sources, and features.

 

Compressor specifications to consider when selecting regenerative blowers include: maximum free air delivery, maximum pressure, and motor power. Free air delivery (FAD) is the actual air produced by the compressor pump at the rated pressure. Maximum FAD is usually rated at a pressure somewhat less than the maximum pressure available. Volume per unit time is the unit of measure. Maximum pressure is the maximum level of air pressure generated by the compressor. Typically, these units are referenced to one atmosphere, as in psig or psi gauge. Note that maximum flow may not occur at maximum pressure. Motor power is the rated power of motor or engine driving compressor pump.

 

 

How They Work

 

Regenerative blowers draw air or other gases into the blower unit by impeller blades passing an inlet port. The impeller blades then accelerate the air in an outward and forward direction using centrifugal action. The air is turned back, or ''regenerated'' by the blower's annular-shaped housing to the base of following blades, where it is again projected outward. Every ''regeneration'' imparts more pressure to the air.

When the air reaches a ''stripper section'' at the outlet, it is ''stripped'' from the impeller and diverted out the blower. (The stripper section is located between the inlet and the outlet where the annulus is reduced in size to fit closely to the sides and tips of the impeller blades.)

The outcome: Pressures generated by the one or two spinning, non-contacting, oil-free impellers are equal to those obtained by many larger multi-stage or positive displacement blowers.

 

 

Advantages

 

1. Energy Efficiency

 

Developing pressures higher than required for applications wastes energy. Regenerative blowers have been engineered to deliver the ideal pressure and flow for properly sized pneumatics at point-of-use.

 

2. Low Maintenance and High Reliability

 

Fewer moving parts reduce wear, tear, maintenance, and downtime to promote sustained blower reliability. Unlike competing technologies incorporating necessary sliding vanes, valves, and pistons, the only contacting moving parts inside a regenerative blower are two permanently sealed ball bearing assemblies.

 

3. Green Performance

 

Regeneratives supply clean air, free of oil, excess moisture, and other compressor-induced contaminants. They further eliminate any need for expensive, high-maintenance outlet filters and dryers or special water and oil traps.

 

 

 



  I & H American Blowers Co., Ltd. All rights reserved.
Address: 25 College Ave. Unit #404, Nanuet, NY, USA 10954
Phone: 914-368-3535 | Fax: 845-230-6600
e-mail: sales@americanih.com
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