US 12,250,912 B2
Plant cultivation apparatus and water supply control method therefor
Hoon Seok Choi, Seoul (KR); and Tae Yang Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/771,133
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Aug. 13, 2020, PCT No. PCT/KR2020/010721
§ 371(c)(1), (2) Date Apr. 22, 2022,
PCT Pub. No. WO2021/080140, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 10-2019-0131343 (KR), filed on Oct. 22, 2019.
Prior Publication US 2022/0295714 A1, Sep. 22, 2022
Int. Cl. A01G 9/24 (2006.01); A01G 27/00 (2006.01)
CPC A01G 9/247 (2013.01) [A01G 27/003 (2013.01); A01G 27/008 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A plant cultivation apparatus comprising:
a cabinet defining a cultivation space accommodating at least one bed, plants being cultivated in the cultivation space;
a door for opening and closing the cultivation space;
a liquid supply module provided in the cultivation space to supply feed liquid to the bed;
a residual liquid detection sensor configured to detect whether residual liquid of the feed liquid supplied to the bed is present; and
a controller configured to control the liquid supply module based on whether residual liquid of the feed liquid supplied to the bed is present,
wherein the bed has a depression which is formed to be recessed from an inner bottom of the bed to receive and store the feed liquid from the liquid supply module, and
wherein the bed is formed with a sensing protrusion which protrudes from a bottom surface of the depression, the sensing protrusion having an upper surface positioned higher than the bottom surface of the depression and lower than a bottom surface of the bed, and
wherein the residual liquid detection sensor is disposed below the sensing protrusion and detects whether residual liquid on the sensing protrusion is present.