ASB Industries, Barberton, Ohio, reports that it recently completed installation of its new electric Gardner Denver multispeed air compressor in conjunction with major electrical upgrades. The newer technology of the Gardner Denver VST 110 two-stage, variable-speed Rotary Screw Air Compressor is being incorporated while electrical upgrades are being completed.
ASB requires stable and consistent compressed air throughout the plant—critical clean and dry air for blasting is fundamental to preparing surfaces for thermal spray and cold spray processes. This new VST 110 has the AirSmart controller with variable frequency drives for pressure and volume optimization. Other benefits include an efficient engine cooling system with engineered advancements to minimize pressure drops and air volume changes during peak production.
Screw technology in the new air compresssor is based on displacement as the fundamental principle: The screw compression components consist of male and female rotors that move toward each other while the volume between the rotors and the housing decreases.
The pressure ratio of the screw depends on the length and dimensions of the screw, and the design of the air discharge port. The screw element is valveless, so there are no mechanical forces that could create an imbalance. The mode of air compression will work at high shaft speeds, providing a large flow rate with a small footprint.
