US 11,913,670 B2
Sealed box container, main machine of heat recovery switching device, and refrigeration device
Huajun Mao, Foshan (CN); and Shuqing Liu, Foshan (CN)
Assigned to GD MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD., Foshan (CN); and MIDEA GROUP CO., LTD., Foshan (CN)
Appl. No. 17/764,981
Filed by GD MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD., Foshan (CN); and MIDEA GROUP CO., LTD., Foshan (CN)
PCT Filed Mar. 18, 2020, PCT No. PCT/CN2020/080062
§ 371(c)(1), (2) Date Mar. 30, 2022,
PCT Pub. No. WO2021/098102, PCT Pub. Date May 27, 2021.
Claims priority of application No. 201922003797.1 (CN), filed on Nov. 19, 2019.
Prior Publication US 2023/0027551 A1, Jan. 26, 2023
Int. Cl. F24F 13/22 (2006.01); F24D 3/10 (2006.01); F24F 1/26 (2011.01); F24F 1/34 (2011.01)
CPC F24F 13/22 (2013.01) [F24D 3/1058 (2013.01); F24F 1/26 (2013.01); F24F 1/34 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A sealed box container within a main machine for a heat recovery switching device, the sealed box container comprising:
a plurality of box bodies spliced to define a sealed cavity and provided with a through hole in communication with the sealed cavity, the sealed cavity being configured to accommodate a pipeline assembly of the main machine, and the pipeline assembly being coupled to an external pipeline via the through hole;
wherein a diameter of the through hole gradually increases along direction of inside of the sealed cavity to outside of the sealed cavity, and the through hole is provided with a sealing ring.