PROBLEM TO BE SOLVED: To provide a gas separator enabling an increase in concentration of a specific gas by operating continuously a pressure-swing device.SOLUTION: The gas separator includes the pressure-swing device fluctuating the pressure of a mixture gas by a fixed part and a movable portion, an adsorbing cylinder housing an adsorbent adsorbing the specific gas from the mixture gas compressed by the pressure-swing device, a storage tank pooling the gas separated by the adsorbing cylinder, and a reproduction means desorbing the gas adsorbed by the adsorbent by backflowing a part of the gas sent to the storage tank and introducing it to the adsorbent, and is characterized in that the specific gas is separated continuously from the mixture gas by the PSA method. The movable portion of the pressure-swing device fluctuates continuously (without standing still). A position detecting means detecting a fluctuation position of the movable portion is provided, and is constituted such that the gas sent to the storage tank side is introduced to the adsorbent in a fluctuation range previously set of the movable portion.COPYRIGHT: (C)2009,JPO&INPIT【課題】 圧力変動装置を連続的に動作させて特定の気体の濃度を高くすることができる気体分離装置を提供する。【解決手段】 固定部と可動部によって混合気体の圧力を変動させる圧力変動装置と、この圧力変動装置で圧縮される混合気体から特定の気体を吸着する吸着剤を収容した吸着筒体と、この吸着筒体によって分離された気体を貯留させる貯留タンクと、前記吸着剤に吸着された気体を前記貯留タンク側に送られた気体の一部を逆流させて当該吸着剤に導き脱着させる再生手段とを含み、PSA法により混合気体から特定の気体を連続的に分離する気体分離装置であって、前記圧力変動装置の可動部は(静止することなく)連続的に変動するようになっていて、可動部の変動位置を検出する位置検出手段を設け、前記可動部が予め定められた変動範囲において、前記貯留タンク側に送られた気体を前記吸着剤へ導くように構成した。【選択図】 図1
