POWER SAVING SYSTEM OF INDUCTION MOTOR OPERATION CONTROL IN VENTILATION AND ASPIRATION AGGREGATES Russian patent published in 2009 - IPC F24F11/00 

FIELD: heating.

SUBSTANCE: system is intended for control of driving electric induction motor operation in ventilation and aspiration aggregates. System includes air duct 1 with branches 2, driving electric motor 3 of exhauster with fan 4, with the motor input connected to first output of electric motor 3 control unit 5, exhauster gate 6 connected to electric motor 7. Dust sensors 8 in the same amount as branches 2 are installed in dust accumulation locations. Electric contacts 9 refer to electric motor actuation circuit. Control units 10 of electric motors 11 of gates 12 are installed at branches 2. Dust sensor 8 output and electric contacts 9 of electric motor actuation circuit are connected to respective inputs of unit 10. First input of unit 10 is connected to input of respective electric motor 11, second input is connected over respective input of unit summer 13 to input of unit 5, second output of which is connected to respective first input of control unit 14 switching block controller 15 subsystem of step-up voltage converters of electrostatic separator 16 field. Also device includes control unit 17 of electric motor 7, control and adjustment sensor 18 of electrostatic separator de-electrifying, dust sensor 19 at output of electrostatic separator 16.

EFFECT: improved reliability.

1 dwg