Industrial air blowers from Busch
side channel blowers for all applications where a pulsation-free volume flow is required.
TYR rotary lobe blowers, providing constant differential pressures for wastewater treatment, pneumatic conveying, or fish farming applications.
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Operating principle of air blowers
Put simply, blowers work by trapping air to increase its pressure, then releasing it. The exact operating principle depends on the type of blower.
Types of industrial air blowers
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Rotary lobe blowers
The rotary lobe blower is a type of positive displacement blower and operates according to the Roots principle. It produces a high air flow at a low pressure. Inside a cylindrical housing, two rotary lobes are mounted in parallel. These three-bladed lobes rotate in opposite directions. The rotation of the lobes traps the air or gas in the space between the rotors and the housing, then transports it to the outlet. There, the air is released, now at a higher pressure.
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Side channel blowers
Side channel blowers transfer the kinetic energy of a rotating impeller to the air or gas and convert it into pressure. The impeller is mounted on the shaft of the motor. Together with the specially shaped housing, it forms the side channel.
The air or gas is drawn into the side channel and compressed. Single-stage side channel blowers discharge it after one rotation. Two-stage versions convey it to the second stage after one rotation. Here, it is compressed again and discharged afterwards. This leads to higher differential pressures.
A side channel blower provides variable airflow at a lower pressure than a rotary lobe blower, but at a higher pressure than a fan.
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