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What is the relationship between the current and pressure of a three-lobe rotary blower?
Release time:
2022-06-08
The three-lobe Roots blower generates greater pressure with increased power under equal speed and voltage conditions. Since power = voltage x current, this means that under equal speed and voltage conditions, a larger current results in greater power, and thus greater pressure. The speed of a three-phase motor is fixed; when pressure builds up, the motor load increases, which can lead to overcurrent and motor burnout. The pressure range is from 9.8 kPa to 98 kPa, but it will not be too high. The three-lobe Roots blower is a positive displacement blower, and the air volume delivered is proportional to the speed. Each rotation of the three-lobe impeller performs three suction and discharge cycles with two impellers. Compared to the two-lobe type, gas pulsation is reduced, load variation is small, mechanical strength is high, noise is low, and vibration is also minimal. Two three-lobe impellers are mounted on two parallel shafts, maintaining a small gap between the impellers, the elliptical casing inner surface, and each impeller. As the impellers rotate in opposite directions at a constant speed, the gas enclosed by the casing and impellers is transported from the intake side to the discharge side. Because the impellers rotate in opposite directions at a certain speed, a specific amount of gas enclosed by the casing and impellers is transported from the intake side to the discharge side. Since the Roots blower is a constant flow blower, the main working parameter is the air volume, and the output pressure depends on the changes in the pipeline and load, with very little variation in air volume.
The three-lobe rotary blower generates greater pressure with increased power under equal speed and voltage conditions. Since power = voltage x current, this means that under equal speed and voltage conditions, a higher current results in greater power, and thus greater pressure. The speed of the three-phase motor is fixed; if the pressure builds up, the motor load increases, which can lead to overcurrent and motor burnout. The pressure range is from 9.8 kPa to 98 kPa, but it will not be too high. The three-lobe rotary blower is a positive displacement blower, and the air volume delivered is proportional to the speed. Each rotation of the three-lobe impeller involves three suction and discharge cycles with two impellers. Compared to the two-lobe type, the gas pulsation is reduced, load variation is small, mechanical strength is high, noise is low, and vibration is also minimal.
Two three-lobe impellers are installed on two parallel shafts, maintaining a small gap between the impellers, the elliptical casing inner surface, and each impeller. As the impellers rotate in opposite directions at a constant speed, the gas enclosed by the casing and the impellers is transported from the intake side to the discharge side. Because the impellers rotate in opposite directions at a certain speed, a specific amount of gas enclosed by the casing and the impellers is transported from the intake side to the discharge side. Since the rotary blower is a constant flow blower, the main working parameter is the air volume, and the output pressure depends on the changes in the pipeline and load, with very little variation in air volume.
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