US 12,130,070 B2
Air-cooled refrigerator and air duct shielding device thereof
Yancheng Zhao, Qingdao (CN); Huan Zhang, Qingdao (CN); Falin Yang, Qingdao (CN); and Baolong Mao, Qingdao (CN)
Assigned to QINGDAO HAIER REFRIGERATOR CO., LTD., Qingdao (CN); and HAIER SMART HOME CO., LTD., Qingdao (CN)
Appl. No. 17/921,626
Filed by QINGDAO HAIER REFRIGERATOR CO., LTD., Qingdao (CN); and HAIER SMART HOME CO., LTD., Qingdao (CN)
PCT Filed Dec. 18, 2020, PCT No. PCT/CN2020/137536
§ 371(c)(1), (2) Date Oct. 26, 2022,
PCT Pub. No. WO2021/218191, PCT Pub. Date Nov. 4, 2021.
Claims priority of application No. 202010348051.9 (CN), filed on Apr. 28, 2020.
Prior Publication US 2023/0160624 A1, May 25, 2023
Int. Cl. F25D 17/08 (2006.01); F25D 17/04 (2006.01)
CPC F25D 17/08 (2013.01) [F25D 17/045 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An air duct shielding device suitable for an air-cooled refrigerator, the air duct shielding device comprising:
a fan base having a plurality of air outlets;
a first adjusting part having a rotary disc portion and a plurality of first shielding sheets arranged at intervals, the first adjusting part being configured to controllably rotate around an axis of the rotary disc portion; and
a second adjusting part provided between the first adjusting part and the fan base, the second adjusting part having a plurality of second shielding sheets arranged at intervals;
wherein when the first adjusting part rotates around the axis of the rotary disc portion, the second adjusting part is driven to rotate, such that the first shielding sheet and/or the second shielding sheet completely shield(s), partially shield(s) or completely expose(s) each air outlet, thereby adjusting an air outlet area of each of the plural air outlets.