公开(公告)号：US11641971B2

公开(公告)日：2023-05-09

申请号：US16701071

申请日：2019-12-02

Applicant: LG ELECTRONICS INC.

Inventor： Jun Ho Kim ,  Min Jung Kim ,  Yoo Jin Choi ,  In Jun Park ,  Sung Jin Kim

IPC: A47J31/00 ,  A47J31/52 ,  A47J31/44 ,  A23F5/26

CPC classification number: A47J31/002 ,  A23F5/262 ,  A47J31/4475 ,  A47J31/525

Abstract: According to the present disclosure, when drip coffee is extracted, it may learn drip coffee recipe information of a barista to be imitated and extract the drip coffee based on the learned reference acidity and reference concentration. The extracted drip coffee may be compared with the learned reference acidity and the reference concentration and evaluated, and when the acidity and concentration of the drip coffee are matched with the reference acidity and the reference concentration, the drip coffee having the same acidity and concentration as the drip coffee may be extracted. Alternatively, when the acidity and concentration of the drip coffee are not matched with the reference acidity and the reference concentration, drip coffee having the same or/and similar acidity and concentration as or/and to the reference acidity and the reference concentration may be extracted by changing extraction conditions of the drip coffee through reinforcement learning.