PROBLEM TO BE SOLVED: To provide a liquid mixer capable of aiming at cost reduction and space reduction, and excellent in quality assurance and easiness of filling into a container and to provided a liquid mixing method.SOLUTION: A liquid mixer 10 includes a first storage part 1 for storing first liquid L1, a connection pipe 2 having a first end 2a connected to a lower part 1a in a vertical direction of the first storage part 1, a second storage part 3 having an upper part 3a connected to a second end 2b of the connection pipe 2, a liquid supply part 4 for supplying second liquid L2 into the second storage part 3, and a decompression part 5 for decompressing a vapor-phase part 8 of an upper part in the second storage part 3 to a pressure lower than the atmospheric-pressure.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】低コスト化および省スペース化を図ることができ、かつ製品の品質確保および容器への充填しやすさの点で優れた液体混合装置および液体混合方法を提供する。【解決手段】第一液体L1が貯留された第一貯留部1と、第一貯留部1の鉛直方向における下部1aに第一端部2aが接続された接続管2と、接続管2の第二端部2bに上部3aが接続された第二貯留部3と、第二貯留部3内に第二液体L2を供給する液体供給部4と、第二貯留部3内の上部の気相分8を大気圧より低い圧力に減圧する減圧部5と、を備える液体混合装置10。【選択図】図1
