US 11,927,974 B2
Flow rate control device with compliant structure
Kwang Kun Park, Daejeon (KR); Jun Seong Lee, Daejeon (KR); and Kee Joo Lee, Daejeon (KR)
Assigned to Korea Aerospace Research Institute, Daejeon (KR)
Filed by Korea Aerospace Research Institute, Daejeon (KR)
Filed on Nov. 17, 2021, as Appl. No. 17/528,365.
Claims priority of application No. 10-2020-0156225 (KR), filed on Nov. 20, 2020.
Prior Publication US 2022/0163982 A1, May 26, 2022
Int. Cl. G05D 7/01 (2006.01); F02K 9/60 (2006.01)
CPC G05D 7/012 (2013.01) [F02K 9/605 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A flow rate control device formed inside a pipe through which a fluid flows, comprising:
a main plate formed inside the pipe so as to face a fluid flow direction and including a through hole formed at the center thereof, the through hole having a perimeter;
a sub-plate disposed in front of the through hole of the main plate, the sub-plate having a circumference, and corresponding to the size of the through hole; and
a cylindrical column connecting the perimeter of the through hole and the circumference of the sub-plate to each other, the column having a length from the through hole to the sub-plate, the column including a side surface and a plurality of holes in the side surface for discharging the fluid through the column, the plurality of holes being formed in a circular shape or a polygonal shape, and wherein the plurality of holes are configured to be expanded and contracted by a pressure applied to the sub-plate; and
wherein the sub-plate is displaced by inflowing fluid, and wherein the column has a compliant structure such that the length of the column decreases as the sub-plate is displaced by the inflowing fluid, and
wherein a hole is formed at the center of the sub-plate, and ends of a plurality of guides having a rod shape are attached to a rear surface of the sub-plate.