PROBLEM TO BE SOLVED: To provide an oxygen concentrator which can curtail production costs with easier assembly.SOLUTION: The oxygen concentrator 1 is constituted of a plurality of components which contains an adsorption cylinder 2 for housing an adsorbent able to selectively adsorb nitrogen contained in material air, a storage tank 3 for temporarily storing an oxygen concentrated gas generated with the adsorption cylinder 2, a gas transfer means 4 for transferring the material air, the oxygen concentrated gas or an exhaust gas, an electromagnetic valve 6 for opening or closing or switching a game passage connected to the adsorption cylinder 2 and a control means 8 for controlling the gas transfer means and/or the electromagnetic valve. Also provided are a support body 9 made of a resin for supporting the plurality of components being positioned at prescribed locations and a plurality of covers 10 made of a resin for covering the outside of the support body 9. The support body 9 is injection molded.COPYRIGHT: (C)2008,JPO&INPIT【課題】組み立てが容易で製造コストを削減することのできる酸素濃縮装置を提供する。【解決手段】酸素濃縮装置1を、原料空気に含まれる窒素を選択的に吸着しうる吸着剤が収容された吸着筒2と、吸着筒2で生成された酸素濃縮ガスを一時的に貯留するための貯留タンク3と、原料空気、酸素濃縮ガス又は排気ガスを移送するためのガス移送手段4と、吸着筒2に接続されたガス流路の開閉又は切替を行うための電磁弁6と、ガス移送手段及び/又は電磁弁を制御するための制御手段8とを含む複数の部品で構成し、該複数の部品を所定の箇所に位置決めして支持するための樹脂製の支持体9と、支持体9の外側を覆う複数の樹脂製のカバー10とを備えたものとした。支持体9は、射出成形によって成形した。【選択図】図3