Blower assembly with closed-loop feedback

摘要

A closed-loop blower includes a blower assembly having a motorized fan that draws ambient air in through an inlet and exhausts air out an outlet. A control circuit is coupled to the motorized fan and a pressure sensing device near the outlet measures pressure of the exhaust air and generates a pressure signal. The control circuit receives the pressure signal and adjusts the speed of the motorized fan to obtain a desired pressure at the outlet. Temperature and motor speed readings may also be detected and input to the control circuit to adjust the speed of the motor and thus the fan. An input device may be provided to adjust the desired pressure values or the control circuit may be programmed with the desired value.