US 12,145,790 B2
Cooling tank, water purifier having same, and cooling tank manufacturing method
Kyu-Jun Kim, Seoul (KR); Chul-Ho Kim, Seoul (KR); Young-Hoon Hong, Seoul (KR); and Min-Chul Yong, Seoul (KR)
Assigned to COWAY CO., LTD., Chungcheongnam-do (KR)
Appl. No. 17/779,377
Filed by COWAY CO., LTD., Chungcheongnam-do (KR)
PCT Filed Dec. 4, 2020, PCT No. PCT/KR2020/017592
§ 371(c)(1), (2) Date May 24, 2022,
PCT Pub. No. WO2021/112604, PCT Pub. Date Jun. 10, 2021.
Claims priority of application No. 10-2019-0161061 (KR), filed on Dec. 5, 2019; and application No. 10-2019-0161063 (KR), filed on Dec. 5, 2019.
Prior Publication US 2022/0402681 A1, Dec. 22, 2022
Int. Cl. B65D 81/38 (2006.01); B29C 44/12 (2006.01); B29C 44/42 (2006.01); B29K 75/00 (2006.01); B29L 31/00 (2006.01); F25D 31/00 (2006.01)
CPC B65D 81/38 (2013.01) [B29C 44/1257 (2013.01); B29C 44/42 (2013.01); B29K 2075/00 (2013.01); B29K 2995/0015 (2013.01); B29L 2031/712 (2013.01); F25D 31/003 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A cooling tank comprising:
a tank body in which a water accommodation space is formed;
a foaming case surrounding an external peripheral surface of the tank body; and
a foamed thermal insulating material formed by a foaming process after a foaming agent is introduced into a foaming space between the external peripheral surface of the tank body and the foaming case,
wherein the foamed thermal insulating material is integrated with the tank body and the foaming case by the foaming process, and
an air outlet for discharging air from the foaming space during the foaming process is formed in the foaming case,
wherein an injection port for injecting the foaming agent is formed in the foaming case;
wherein the injection port is formed adjacent to one side of the foaming case, and the air outlet comprises a main outlet formed oppose the injection port and adjacent to an opposite side of the foaming case; and
wherein the main outlet is provided for discharging air from the foaming case therethrough, and a shielding film member shielding for leakage of the foamed thermal insulating material is installed at the main outlet.