US 11,926,000 B2
Refrigerator and apparatus for fabricating the same
Wonyeong Jung, Seoul (KR); Deokhyun Youn, Seoul (KR); Jangseok Lee, Seoul (KR); and Hyungson Ki, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR); and UNIST ACADEMY-INDUSTRY RESEARCH CORPORATION, Ulsan (KR)
Filed by LG ELECTRONICS INC., Seoul (KR); and UNIST ACADEMY-INDUSTRY RESEARCH CORPORATION, Ulsan (KR)
Filed on Mar. 23, 2021, as Appl. No. 17/209,776.
Application 17/209,776 is a division of application No. 15/771,186, granted, now 10,987,757, previously published as PCT/KR2016/008525, filed on Aug. 2, 2016.
Claims priority of application No. 10-2015-0151204 (KR), filed on Oct. 29, 2015; and application No. 10-2015-0151256 (KR), filed on Oct. 29, 2015.
Prior Publication US 2021/0229214 A1, Jul. 29, 2021
Int. Cl. B23K 26/08 (2014.01); B23K 26/12 (2014.01); B23K 26/20 (2014.01); B23K 26/244 (2014.01); B23K 26/28 (2014.01); B23K 37/04 (2006.01); B23K 101/12 (2006.01); F25D 23/06 (2006.01)
CPC B23K 26/08 (2013.01) [B23K 26/123 (2013.01); B23K 26/127 (2013.01); B23K 26/206 (2013.01); B23K 26/244 (2015.10); B23K 26/28 (2013.01); B23K 37/0435 (2013.01); F25D 23/06 (2013.01); B23K 2101/12 (2018.08); F25D 2201/14 (2013.01); F25D 2500/02 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An apparatus for fabricating a vacuum adiabatic body of a refrigerator, the apparatus comprising:
a laser source to provide a laser beam;
a jig including:
a base configured to support a base material of the vacuum adiabatic body and a sheet configured to resist heat conduction from the base material, and
at least one cover provided opposite to the base, wherein the jig is configured to position the base material and the sheet to be welded to each other by the laser beam; and
a vacuum pump configured to apply a vacuum pressure to the jig,
wherein the base includes a groove through which the vacuum pressure is applied to the sheet such that the vacuum pressure pulls a portion of the sheet into the groove,
wherein the at least one cover includes:
a first body cover; and
a second body cover interposed between the first body cover and the sheet, the first body cover being formed of a first material, the second body cover being formed of a second material that is more deformable than the first material, and
wherein:
the base material includes a first plate and a second plate that are spaced apart, and
the second body cover is configured to support the sheet such that at least one edge of the sheet is pressed against the first plate and the second plate.