PROBLEM TO BE SOLVED: To provide an oxygen enricher usable in the time when a patient is at home and/or out of home including being in a car for moving or the like.SOLUTION: The oxygen enricher of the present invention is equipped with a compressor for generating compressed air by compressing raw material air, a piping for cooling the compressed air of which the temperature will rise, an adsorption cylinder for storing a catalyst for adsorbing nitrogen from the compressed air and releasing oxygen, and a cooling means for cooling the compression means and the cooling piping by sending air and is characterised by being equipped with an unwoven fabric made of a polyolefinic fiber having a fiber diameter of 1-4 &mum and a polyolefinic short fiber having a fiber diameter of 20-30 &mum in a proper place on the inner surface. Also, it is characterised in that the proper place on the inner surface is at least the inside of a sound proofing room housing the compression means. Furthermore, it is characterised in that the polyolefinic fiber is a polypropylenic fiber.COPYRIGHT: (C)2009,JPO&INPIT【課題】 患者の在宅及び/または外出時(車内移動時等を含む)でも使用が可能な酸素濃縮装置の提供。【解決手段】本発明の酸素濃縮装置は、原料空気を圧縮して圧縮空気を発生するコンプレッサと、温度が上昇する圧縮空気を冷却する冷却配管と、圧縮空気中から窒素を吸着し酸素を放出する触媒を貯蔵した吸着筒と、圧縮手段および冷却配管を送風により冷却する冷却手段とを備えた酸素濃縮装置であって、内面の適所に繊維径1~4μmのポリオレフィン系繊維と繊維径20~30μmのポリオレフィン系短繊維とからなる不織布を設けたことを特徴とする。また、内面の適所は、圧縮手段を収容する防音室の少なくとも内側であることを特徴とする。また、ポリオレフィン系繊維がポリプロピレン系繊維であることを特徴とする。【選択図】 図1
