US 12,000,605 B2
Method for controlling balanced frosting of outdoor units in multi-split air-conditioning system
Baitian Zhuo, Qingdao (CN); Bin Shi, Qingdao (CN); Shaojiang Cheng, Qingdao (CN); Ruigang Zhang, Qingdao (CN); and Jun Wang, Qingdao (CN)
Assigned to Qingdao Haier Air-conditioning Electronic Co., Ltd, Shandong (CN); and Haier Smart Home Co., Ltd., Shandong (CN)
Appl. No. 17/641,973
Filed by Qingdao Haier Air-conditioning Electronic Co., Ltd, Shandong (CN); and Haier Smart Home Co., Ltd., Shandong (CN)
PCT Filed Sep. 4, 2020, PCT No. PCT/CN2020/113395
§ 371(c)(1), (2) Date Mar. 10, 2022,
PCT Pub. No. WO2021/052193, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 201910877989.7 (CN), filed on Sep. 17, 2019.
Prior Publication US 2022/0307713 A1, Sep. 29, 2022
Int. Cl. F24F 11/42 (2018.01); F24F 11/64 (2018.01)
CPC F24F 11/42 (2018.01) [F24F 11/64 (2018.01)] 10 Claims
OG exemplary drawing
 
1. A method for controlling balanced frosting of outdoor units in a multi-connection air conditioning system, the method comprising:
calculating frosting degrees of all outdoor units in an outdoor unit set;
judging whether the outdoor unit set satisfies a frosting imbalance condition based on the frosting degrees of all the outdoor units and a preset frosting imbalance threshold; and
when the outdoor unit set satisfies the frosting imbalance condition, selectively controlling actual output capacities of the outdoor units in the outdoor unit set based on the frosting degrees of all the outdoor units, and making a total amount of the actual output capacities of all the outdoor units not less than a required total amount of the output capacity of the outdoor unit set.