US 11,835,182 B2
Vacuum heat-insulation device for low-temperature tank
Daejun Chang, Daejeon (KR); Hyunjun Park, Daejeon (KR); and Jungwoog Kim, Daejeon (KR)
Assigned to LATTICE TECHNOLOGY CO., LTD., Daejeon (KR)
Appl. No. 17/593,053
Filed by LATTICE TECHNOLOGY CO., LTD., Daejeon (KR)
PCT Filed Mar. 7, 2019, PCT No. PCT/KR2019/002667
§ 371(c)(1), (2) Date Sep. 7, 2021,
PCT Pub. No. WO2020/179956, PCT Pub. Date Sep. 10, 2020.
Prior Publication US 2022/0178496 A1, Jun. 9, 2022
Int. Cl. F17C 3/08 (2006.01); F17C 3/04 (2006.01)
CPC F17C 3/08 (2013.01) [F17C 3/04 (2013.01); F17C 2201/0157 (2013.01); F17C 2203/0304 (2013.01); F17C 2203/0391 (2013.01); F17C 2203/066 (2013.01); F17C 2203/0629 (2013.01); F17C 2205/0107 (2013.01); F17C 2205/0188 (2013.01); F17C 2205/0352 (2013.01); F17C 2221/033 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A vacuum heat-insulation device for a low-temperature tank, the vacuum heat-insulation device comprising:
a low-temperature tank having a storage space for accommodating an ultra-low-temperature fluid therein;
a low-temperature heat-insulation layer provided to surround an outer shell of the low-temperature tank; and
a vacuum jacket having an internal space maintained in a vacuum state and sealed to surround an outer surface of the low-temperature heat-insulation layer to maintain airtightness with the outside,
wherein the vacuum jacket has a flexible structure in which at least a portion thereof is contracted or expanded, and
wherein the vacuum jacket includes:
a plurality of smooth portions surrounding the outer surface of the low-temperature heat-insulation layer and made of flat plates spaced apart from each other by a predetermined distance, and
a deformable joint portion formed between the plurality of smooth portions and having the flexible structure.