Turbo blower capable of operating in surge area

A turbo blower capable of operating in a surge area, comprising:

• a turbo blower machine unit (100) increasing pressure of external air flowing inside and then discharging the external air;
• and a turbo blower control unit (200) driving the turbo blower machine unit (100) such that the turbo blower machine unit (100) is stably operated for a predetermined time even in a surge area (SR),
• wherein the turbo blower machine unit (100) that suctions air, increases the pressure of the air, and then discharges the air includes:
• a body housing (110) having a predetermined size in which a predetermined space is formed;
• an air inlet (120) formed on a side of the body housing (110);
• a turbo blower (130) disposed in the body housing (110) and suctioning and discharging air flowing into the air inlet (120);
• an air discharge cone pipe (140) coupled to the turbo blower (130) and sending the air discharged through the turbo blower (130) to the body housing (110);
• a turbo blower silencer (150) suppressing and decreasing noise generated from the inside of the body housing (110);
• the electric valve (160) of which the degree of opening/closing is automatically controlled due to a surge;
• and
• a blow-off valve (170) being automatically opened/closed in accordance with the status of the turbo blower (130), discharging air temporarily increased in pressure to the outside in order to prevent backflow of air increased in pressure and instantaneous reduction of operation efficiency (flow rate) when the air increased in pressure through the turbo blower (130) flows to the air discharge cone pipe (140), installed on the air discharge cone pipe (140) to effectively suppress pulsation that is generated when the turbo blower (130) is operated and pulsation that may be generated in next-order operation during operation, preventing collision of the air that is suctioned and the air that is discharged after the pressure is increased, increasing the time for discharging the air increased in pressure, and preventing damage to an impeller (132) of the turbo blower (130), and protecting the turbo blower (130),
• wherein the turbo blower (130) control includes:
• a turbo blower casing (131) having an air intake duct (IA) and an air discharge duct (OA);
• an impeller (132) suctioning air into the turbo blower casing (131), increasing the pressure of the air, and then discharging the air;
• a turbo blower motor (133) composed of rotor (R) and a stator (S) that rotate the impeller (132);
• and
• a cooler (134) preventing an increase of the internal temperature of the turbo blower casing (131),
• energy is applied to the air that is suctioned into the air intake duct (IA) by rotation of the impeller (132), thereby increasing the amount and pressure of air and discharging the air increased in pressure to the air discharge duct (OA),
• wherein the turbo blower control unit (200) that controls operation of the turbo blower machine unit (100) in a normal area (CR) and a surge area (SR) due to a temporary surge includes:
• an inverter (210) supplying power to the turbo blower machine unit (100);
• an operation panel (220) setting and checking a real-time status of the turbo blower machine unit (100) powered through the inverter (210);
• a surge area detection driver (230) controlling the turbo blower machine unit (100) to be stably operated for a predetermined time even in a surge area (SR);
• a data storage unit (240) storing data about an operation history, a surge operation (SR) history, and a surge history of the turbo blower machine unit (100);
• and
• a controller (250) controlling the inverter (210), the operation panel (220), the surge area (SR) detection driver (230), and the data storage unit (240),
• controls the turbo blower machine unit (100) to keep stably operating for a predetermined time even in the surge area, so the operation in the surge area (SR) is induced to operation in a normal area,
• wherein the surge area detection driver (230) includes:
• a surge area sensing unit (231) sensing whether the operation status of the turbo blower machine unit (100) is operation in the normal area or operation in the surge area;
• an automatic control valve activator (232) automatically controlling an electric valve (160) in accordance with the degree of opening/closing set by the manager when the surge area sensing unit (231) senses the operation in the surge area;
• a surge area operation maintainer (233) keeping the operation of the turbo blower machine unit (100) by operation of the automatic control valve activator (232);
• and
• a surge area operation stopper (234) suspending the operation of the turbo blower machine unit (100) when the surge area operation maintainer (233) determines that the turbo blower machine unit (100) is operated in the surge area by not a temporary surge, but a surge that damages to the turbo blower machine unit (100),
• wherein the automatic control valve activator (232) that automatically controls the electric valve (160) in accordance with the degree of opening/closing set by the manager includes:
• a first automatic control valve range setting module (233a) setting the degree of opening/closing of the electric valve (160) according to the continuation time of a surge generated in the turbo blower machine unit (100) such that the turbo blower machine unit (100) operates in the surge area, under the assumption that the degree of opening/closing of the electric valve (160) is 0[%] to 100[%];
• a second automatic control valve range setting module (233b) setting the degree of opening/closing of the electric valve (160) according to the continuation time of a surge generated in the turbo blower machine unit (100) such that the turbo blower machine unit (100) operates in the surge area, except for the range set by the first automatic control valve range setting module (233a);
• and
• a third automatic control valve range setting module (233c) setting the degree of opening/closing of the electric valve (160) according to the continuation time of a surge generated in the turbo blower machine unit (100) such that the turbo blower machine unit (100) operates in the surge area, except for the ranges set by the first automatic control valve range setting module (233a) and the second automatic control valve range setting module (233b),
• wherein an operation range is enlarged such that operation in a surge area is allowed within a range in which the turbo blower machine unit (100) is not damaged is enlarged by setting and controlling the degree of opening/closing of the electric valve (160) according to generation and continuation time of a surge, and the turbo blower machine unit (100) is controlled to be stably operated for a predetermined time set in advance by a manager in the surge area in consideration of the performance of the turbo blower machine unit (100) and the status of a line for supplying air.