US 12,325,947 B2
Additive feeding device and washing machine
Tao Huang, Shandong (CN); Baozhen Cheng, Shandong (CN); and Bingheng Zhou, Shandong (CN)
Assigned to QINGDAO HAIER WASHING MACHINE CO., LTD., Shandong (CN); and HAIER SMART HOME CO., LTD., Shandong (CN)
Appl. No. 17/632,272
Filed by QINGDAO HAIER WASHING MACHINE CO., LTD., Shandong (CN); and HAIER SMART HOME CO., LTD., Shandong (CN)
PCT Filed Jul. 31, 2020, PCT No. PCT/CN2020/106235
§ 371(c)(1), (2) Date Feb. 2, 2022,
PCT Pub. No. WO2021/023113, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 201910713104.X (CN), filed on Aug. 2, 2019; application No. 201910713123.2 (CN), filed on Aug. 2, 2019; and application No. 201910713792.X (CN), filed on Aug. 2, 2019.
Prior Publication US 2022/0275560 A1, Sep. 1, 2022
Int. Cl. D06F 33/37 (2020.01); D06F 39/02 (2006.01); D06F 105/02 (2020.01); D06F 105/42 (2020.01)
CPC D06F 39/022 (2013.01) [D06F 33/37 (2020.02); D06F 39/02 (2013.01); D06F 39/028 (2013.01); D06F 2105/02 (2020.02); D06F 2105/42 (2020.02)] 14 Claims
OG exemplary drawing
 
1. An additive feeding device, comprising,
a water supply pipeline; and
a liquid storage box containing an additive;
wherein a suction structure comprises a connecting pipeline which is at least partially connected with the water supply pipeline in parallel, a power unit for providing suction power is arranged on the connecting pipeline, the liquid storage box is connected with the connecting pipeline, and a control device for controlling a flow direction and/or on-off of a liquid in a pipeline is arranged on the water supply pipeline and/or the connecting pipeline, and the control device is used for pumping the additive into the water supply pipeline, or enabling a fed water stream to flow through the connecting pipeline to flush the power unit;
the power unit is composed of a pump which is connected into the connecting pipeline in series, an inlet end and an outlet end of the connecting pipeline are respectively connected with the water supply pipeline, and the liquid storage box is connected with the connecting pipeline at upstream of an inlet end of the pump through a liquid pumping pipeline;
a position where the outlet end of the connecting pipeline communicates with the water supply pipeline is located at downstream of a communicating position of the inlet end of the connecting pipeline and the water supply pipeline; and
a first one-way check valve for controlling liquid to flow only from a connecting position of the inlet end of the connecting pipeline to a connecting position of the outlet end of the connecting pipeline is arranged on the water supply pipeline connected with the connecting pipeline in parallel; and a second one-way check valve for controlling liquid to only flow from the liquid storage box to the connecting pipeline is arranged on the liquid pumping pipeline.