US 12,379,074 B2
Pressure vessel and method of manufacturing pressure vessel
Cheol Hwan Kim, Yongin-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on May 10, 2023, as Appl. No. 18/195,674.
Claims priority of application No. 10-2022-0177521 (KR), filed on Dec. 16, 2022.
Prior Publication US 2024/0200729 A1, Jun. 20, 2024
Int. Cl. F17C 13/06 (2006.01); B05B 1/06 (2006.01)
CPC F17C 13/06 (2013.01) [B05B 1/06 (2013.01); F17C 2203/0663 (2013.01); F17C 2205/0352 (2013.01); F17C 2209/234 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A pressure vessel comprising:
a vessel part including a liner and a fiber-reinforced layer surrounding an outer surface of the liner; and
a nozzle part positioned at an end of the vessel part,
wherein the nozzle part includes:
a nipple having at least a portion inserted into the liner; and
an inner sleeve inserted between the outer surface of the liner and an inner surface of the fiber-reinforced layer, the inner sleeve having a flow path groove extending in an extension direction of the liner;
wherein a direction toward the end to which the nozzle part is connected is a first direction and a direction opposite to the first direction is a second direction, among an extension direction of the vessel part, and wherein the nipple includes an insertion fitting part inserted into the vessel part;
wherein the insertion fitting part includes a coupling protrusion part protruding from an outer surface of an end of the insertion fitting part in the first direction;
wherein the inner sleeve includes an inner coupling step coupled to the coupling protrusion part;
wherein the liner includes a sleeve fixing groove concavely formed on the outer surface of the liner; and
wherein the inner sleeve includes a sleeve protrusion protruding from an inner surface of the inner sleeve and inserted into the sleeve fixing groove.