US 12,421,639 B2
Ventilation control method for laundry device
Kai Liu, Qingdao (CN); Sheng Xu, Qingdao (CN); Ziqiang Wang, Qingdao (CN); and Mingli Zhou, Qingdao (CN)
Assigned to QINGDAO HAIER LAUNDRY ELECTRIC APPLIANCES CO., LTD, Qingdao (CN); and HAIER SMART HOME CO., LTD., Qingdao (CN)
Appl. No. 18/250,635
Filed by Qingdao Haier Laundry Electric Appliances Co., Ltd, Shandong (CN); and Haier Smart Home Co., Ltd., Shandong (CN)
PCT Filed Oct. 14, 2021, PCT No. PCT/CN2021/123666
§ 371(c)(1), (2) Date Apr. 26, 2023,
PCT Pub. No. WO2022/068946, PCT Pub. Date Apr. 7, 2022.
Claims priority of application No. 202011192315.2 (CN), filed on Oct. 30, 2020.
Prior Publication US 2023/0407541 A1, Dec. 21, 2023
Int. Cl. D06F 33/43 (2020.01); D06F 35/00 (2006.01); D06F 39/06 (2006.01); D06F 39/08 (2006.01); D06F 103/44 (2020.01); D06F 105/02 (2020.01); D06F 105/54 (2020.01)
CPC D06F 33/43 (2020.02) [D06F 35/008 (2013.01); D06F 39/06 (2013.01); D06F 39/088 (2013.01); D06F 2103/44 (2020.02); D06F 2105/02 (2020.02); D06F 2105/54 (2020.02)] 10 Claims
OG exemplary drawing
 
1. A ventilation control method for a clothing washing apparatus, wherein the clothing washing apparatus comprises a drum assembly, a clothing treatment agent dispenser and a water inflow pipe; an inlet of the water inflow pipe is communicated with the clothing treatment agent dispenser, and an outlet of the water inflow pipe is communicated with the drum assembly; the clothing washing apparatus further comprises an air inflow pipe communicating outside of the clothing washing apparatus with the drum assembly, and a siphon device connected with the water inflow pipe; an air inflow fan is arranged in the air inflow pipe, and the siphon device is arranged to be capable of discharging water in the water inflow pipe when water in the water inflow pipe reaches a siphoning height, so that the water inflow pipe is communicated with the outside of the clothing washing apparatus;
the ventilation control method comprising:
acquiring a present current of the air inflow fan when the air inflow fan is turned on;
determining whether a water seal is formed by water in the water inflow pipe based on the present current, wherein when the present current reaches a preset current value, it indicates that a water seal is formed by the water in the water inflow pipe, and wherein when the present current does not reach the preset current value, it indicates that the water seal is not formed by the water in the water inflow pipe;
if the preset current value is reached, releasing the water seal by injecting water into the water inflow pipe to allow the water level of the water in the water inflow pipe to rise under the action of the air inflow fan until the siphoning height is reached to trigger the siphon device to discharge the water in the water inflow pipe, and then ventilating the drum assembly; and
the preset current value is not reached, directly ventilating the drum assembly.