EQUIPPMENT FOR PREVENTING THE FLOWING BACKWARD OF BLOWER FOR HVAC

摘要

Equipment for preventing a blower for an HVAC(Heating Ventilation and Air Conditioning) from flowing backward is provided to improve an amount of wind and efficiency by reducing back flow into a gap between the bell mouse and the ventilation wheel. In equipment for preventing a blower for an HVAC from flowing backward, a plurality of blades(130) is vertically formed on a ventilation wheel(110) along a circumference direction. A motor(140) rotatably drives the ventilation wheel. A ventilation case has an intake port with a bell mouse(150), wherein the ventilation wheel and the motor are received inside of the ventilation case. A plurality of bands(160a,160b,160c) is formed around a top portion of the ventilation wheel in a direction vertical to the blades. At least three periods increase an amount of wind and efficiency of the blower. And, the equipment for preventing the blower for an HVAC from flowing backward reduces noises by reducing an abnormal pressure disturbance due to the backward flow.