Cooltron’s backward-curved centrifugal motorized impellers comprise a fan impeller that is fixed to the rotor of an external rotor motor, eliminating the need for an output shaft and resulting in lower bearing loads and vibration-free, high-efficiency operation.
Since the motor and impeller are located directly in the air stream, the impeller also acts as a rotating heat sink, allowing for excellent heat dissipation and efficient motor cooling. This unique coupling of motor and impeller drastically reduces space requirements, allowing for easy installation and making motorized impellers perfectly suited to applications where space is limited.
Direct current (DC) external rotor motors run on 12, 24, or 48 VDC supply. Speed control is much simpler with DC, when compared to AC motorized impellers, because there is no need for an external device. The speed of DC motorized impellers can be controlled using either a 1-10 VDC signal or through pulse-width modulation (PWM).
For applications that require both high efficiency and integrated control, electronically commutated (EC) external rotor motors are available. EC motors have permanent magnets on the rotor and use electronics to control the voltage and current applied to the motor. The electronics provide a broad range of control and monitoring functions.
EC motorized impellers allow for closed loop control of temperature, pressure, and other parameters when either a 1-10 VDC or PWM speed control signal is coupled with an external sensor. Constant pressure control is particularly useful for ducted applications, while constant airflow control is more suited for filtered applications. Alternatively, a potentiometer can be connected to provide a manual form of variable speed control.
DC Motorized Impeller ǀ Backward Curved ǀ 133 x 61 mm
DC Motorized Impeller ǀ Backward Curved ǀ 175 x 62 mm
DC Motorized Impeller ǀ Backward Curved ǀ 175 x 62 mm
DC Motorized Impeller ǀ Backward Curved ǀ 190 x 64 mm
DC Motorized Impeller ǀ Backward Curved ǀ 200 x 65 mm
DC Motorized Impeller ǀ Backward Curved ǀ 220 x 63 mm
DC Motorized Impeller ǀ Backward Curved ǀ 225 x 90 mm
DC Motorized Impeller ǀ Backward Curved ǀ 250 x 80 mm
DC Motorized Impeller ǀ Backward Curved ǀ 280 x 80 mm
DC Motorized Impeller ǀ Backward Curved ǀ 310 x 108 mm
DC Motorized Impeller ǀ Backward Curved ǀ 310 x 140 mm
DC Motorized Impeller ǀ Backward Curved ǀ 310 x 140 mm
DC Motorized Impeller ǀ Backward Curved ǀ 355 x 147 mm
DC Motorized Impeller ǀ Backward Curved ǀ 355 x 170 mm
DC Motorized Impeller ǀ Backward Curved ǀ 400 x 141 mm
EC Motorized Impeller ǀ Backward Curved ǀ 133 x 61 mm
EC Motorized Impeller ǀ Backward Curved ǀ 175 x 62 mm
EC Motorized Impeller ǀ Backward Curved ǀ 190 x 63 mm
EC Motorized Impeller ǀ Backward Curved ǀ 200 x 65 mm
EC Motorized Impeller ǀ Backward Curved ǀ 220 x 63 mm
EC Motorized Impeller ǀ Backward Curved ǀ 225 x 90 mm
EC Motorized Impeller ǀ Backward Curved ǀ 250 x 80 mm
EC Motorized Impeller ǀ Backward Curved ǀ 250 x 110 mm
EC Motorized Impeller ǀ Backward Curved ǀ 280 x 112 mm
EC Motorized Impeller ǀ Backward Curved ǀ 280 x 112 mm
EC Motorized Impeller ǀ Backward Curved ǀ 310 x 108 mm
EC Motorized Impeller ǀ Backward Curved ǀ 310 x 108 mm
EC Motorized Impeller ǀ Backward Curved ǀ 310 x 140 mm
EC Motorized Impeller ǀ Backward Curved ǀ 310 x 140 mm
EC Motorized Impeller ǀ Backward Curved ǀ 355 x 147 mm
EC Motorized Impeller ǀ Backward Curved ǀ 404 x 141 mm
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