US 12,276,135 B2
Refrigerator
Peng Lyu, Qingdao (CN); Hao Zhang, Qingdao (CN); Jiaming Li, Qingdao (CN); Zhanpeng Cui, Qingdao (CN); and Sen Mou, Qingdao (CN)
Assigned to QINGDAO HAIER REFRIGERATOR CO., LTD., Qingdao (CN); and HAIER SMART HOME CO., LTD., Qingdao (CN)
Appl. No. 18/245,121
Filed by QINGDAO HAIER REFRIGERATOR CO., LTD., Shandong (CN); and HAIER SMART HOME CO., LTD., Shandong (CN)
PCT Filed Sep. 7, 2021, PCT No. PCT/CN2021/116939
§ 371(c)(1), (2) Date Mar. 13, 2023,
PCT Pub. No. WO2022/057687, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 202010969257.3 (CN), filed on Sep. 15, 2020.
Prior Publication US 2023/0358077 A1, Nov. 9, 2023
Int. Cl. E05B 47/00 (2006.01); F25D 23/02 (2006.01)
CPC E05B 47/0046 (2013.01) [F25D 23/028 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A refrigerator, comprising:
a refrigerator body;
a main door disposed at an outer side of the refrigerator body, and a secondary door disposed at an outer side of the main door;
a first magnet, disposed in an area of the refrigerator body opposite the main door;
a second magnet, disposed in an area of the secondary door opposite the main door; and
an electromagnetic assembly, disposed on the main door and configured to controllably or operably generate a magnetic attraction force for attracting the first magnet or a magnetic attraction force for attracting the second magnet, the electromagnetic assembly comprising:
a first electromagnet, disposed at a side of the main door facing the refrigerator body;
a second electromagnet, disposed at a side of the main door facing the secondary door;
a first control switch, electrically connected to the first electromagnet and disposed on the secondary door; and
a second control switch, electrically connected to the second electromagnet and disposed on the main door;
wherein the first control switch is configured to receive an on command from a user when the user operates the first control switch before wanting to open the secondary door, to correspondingly perform on control on a circuit in which the first electromagnet is located; and the first electromagnet is configured to controllably switch on a power supply of the first electromagnet under the action of the first control switch to generate the magnetic attraction force for attracting the first magnet, so that the main door remains in a closed state while the user opens the secondary door; and
the second control switch is configured to receive an on command from the user when the user operates the second control switch before wanting to open the main door, to correspondingly perform on control on a circuit in which the second electromagnet is located; and the second electromagnet is configured to controllably switch on a power supply of the second electromagnet under the action of the second control switch to generate the magnetic attraction force for attracting the second magnet, so that the secondary door remains a closed state while the user opens the main door.