DEVICE FOR CONSTANT AIR VOLUME CONTROL, CAPABLE OF CONTROLLING AIR VOLUME WITHOUT ELECTRICAL CONNECTION BY THE PRESSURIZATION FORCES OF A FLUID TO AN AIR VOLUME CONTROL UNIT AND AN ELASTIC UNIT TO AN AIR VOLUME CONTROL UNIT

摘要

PURPOSE: A device for constant air volume control is provided to accurately control air volume by reducing the error range of constant air volume flowing to the inside through the effort of a fluid and an elastic unit by equipping a duct partition for partitioning inside a duct.;CONSTITUTION: A device for constant air volume control comprises an air volume control unit(110), a duct partitioning unit(140), an elastic unit(130), and a stopper(120). An air volume adjustment unit is rotatably connected to a joint shaft(104) inside a duct(102). The duct partitioning unit divides the duct into two parts in the flowing direction of a fluid inside the duct for applying the pressure variation of the fluid which is compressed in the inlet side to air volume control unit. The elastic unit is joined to the joint shaft and constantly maintains the flow rate of the duct by controlling the rotation and opening of the air volume control unit through the pressure variation. The stopper is joined to the joint shaft in order to rotate the air volume control unit within a predetermined area.;COPYRIGHT KIPO 2013