The carburetor and the steam style pipes of option, it has with the oppositions style pipes and the humidity controller of option, the device to which the above-mentioned steam style pipe and the above-mentioned opposition flow tube part, demarcates both sides each one of the membrane at least, concentrates the steam. The steam style pipes and the oppositions style pipes of correspondence where plural lines up alternately can exist. As for the steam style pipes and the oppositions style pipes which line up alternately, for example, stratified constitution or being concentric, it can be tubular arrangement of the same axis. In addition, (1) the solution evaporating, step and (2) density of the active ingredient almost forms the steam which is in the above-mentioned 1st ratio, evaporates to 1st side of the membrane step and (3) the flow of the steam is offered offering another flow of the gas to 2nd side of the membrane, the above-mentioned 1st active ingredient in 1st side with that: Solvent ratio the said 1st active ingredient: The 2nd active ingredient which is larger than solvent ratio: It includes with the step which it makes solvent ratio increase, offers another flow of the gas, the active ingredient in the solvent is included, the 1st active ingredient: The method of forming the active ingredient which is concentrated from the solution which possesses solvent ratio.< Selective figure >Figure 2オプションの気化器と、蒸気流導管と、対向流導管と、オプションの湿度コントローラとを備え、上記蒸気流導管及び上記対向流動管の少なくとも一部が、膜の両側それぞれを画定する、蒸気を濃縮する装置。複数の交互に並ぶ蒸気流導管及び対応の対向流導管が存在し得る。交互に並ぶ蒸気流導管及び対向流導管は、例えば、層状構成又は同心で同軸の管状配置であり得る。また、(1)溶液を気化して、有効成分の濃度がほぼ上記第1の比にある蒸気を形成する、気化するステップと、(2)膜の第1の側へ蒸気の流れを提供するステップと、(3)膜の第2の側へガスの別の流れを提供して、それにより第1の側における上記第1の有効成分:溶媒比を該第1の有効成分:溶媒比よりも大きい第2の有効成分:溶媒比へ増大させる、ガスの別の流れを提供するステップとを含む、溶媒中の有効成分を含み第1の有効成分:溶媒比を有する溶液から濃縮された有効成分を生成する方法。【選択図】図2
