US 11,892,204 B2
Nested freezers for storage and transportation of covid vaccine
Uttam Ghoshal, Austin, TX (US); and Brandon Lee Noska, Hallettsville, TX (US)
Assigned to Sheetak, Inc., Austin, TX (US)
Filed by Sheetak, Inc., Austin, TX (US)
Filed on Dec. 31, 2020, as Appl. No. 17/139,341.
Claims priority of provisional application 63/116,440, filed on Nov. 20, 2020.
Prior Publication US 2022/0163242 A1, May 26, 2022
Int. Cl. F25B 21/02 (2006.01); H01L 23/38 (2006.01); H10N 10/17 (2023.01)
CPC F25B 21/02 (2013.01) [H01L 23/38 (2013.01); H10N 10/17 (2023.02); F25B 2321/0212 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A nested thermal cooler system, the system comprising:
a first cooling assembly comprising:
a first housing;
a first cooling apparatus inside the first housing; and
a first thermal conductive layer forming a first cavity inside the first housing;
a second cooling assembly disposed within the first cavity, the second cooling assembly comprising:
a second housing;
a second cooling apparatus comprising at least one thermoelectric module embedded in the second housing; and
a second thermal conductive layer forming a second cavity inside the second housing;
a first wire wound magnetic core disposed inside the first housing;
a second wire wound magnetic core disposed outside the first housing, wherein the second wire-wound magnetic core is proximate to the first wire wound magnetic core;
a rectifier circuit in electrical communication with the first wire wound magnetic core; and
a power regulator in electrical communication with the rectifier circuit.