US 11,986,755 B2
Double pipe for uniformly distributing flow
Young-Hwa Choi, Gunpo-si (KR)
Appl. No. 17/421,781
Filed by TECHNOLOGY TRADING, LLC., Seoul (KR)
PCT Filed Nov. 14, 2019, PCT No. PCT/KR2019/015517
§ 371(c)(1), (2) Date Jul. 9, 2021,
PCT Pub. No. WO2020/145499, PCT Pub. Date Jul. 16, 2020.
Claims priority of application No. 10-2019-0004000 (KR), filed on Jan. 11, 2019.
Prior Publication US 2022/0088514 A1, Mar. 24, 2022
Int. Cl. F15D 1/02 (2006.01); B01D 35/02 (2006.01); F16L 41/03 (2006.01); F16L 55/00 (2006.01)
CPC B01D 35/02 (2013.01) [F15D 1/02 (2013.01); F16L 41/03 (2013.01); F16L 55/00 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A double pipe for uniformly distributing a flow that is installed in a water purification device, where water purification is done in a plurality of filters by distributing and supplying source water to the plurality of filters,
the double pipe comprising:
an outer tube with a plurality of fluid supply holes penetrated through an outer surface thereof in a length direction, spaced at regular intervals, and a plurality of branch pipes protruded to communicate to the fluid supply holes and serve as a passageway that lets in water to the plurality of filters; and
an inner tube, one end of which is open to supply the source water to the inside, and the other end of which is closed inside the outer tube, with a plurality of discharge holes formed on an outer surface thereof to discharge the fluid to the outside, wherein the other end of the inner tube is brought to a closed state by making tight contact with an inner side surface of the outer tube, and wherein a separate resistance member with a through hole penetrated therethrough to pass the fluid through is fitted in such a way as to wrap around the inner tube, in order to increase resistance to the flow of fluid flowing out through the discharge hole.