To provide an oxygen enrichment machine which a user is prevented from aspiring the various germs or the like together with oxygen-enriched air even when various germs or the like grow in the middle of a path.
The oxygen enrichment machine includes a main body 1 having an oxygen enrichment means, an oxygen-enriched air discharging means 13 to supply the oxygen-enriched air produced by the main body to the user and connection pipes 23 and 24 which constitute a path from the above main body 1 to the oxygen-enriched air discharging means 13, and is disposed with an antibacterial agent, a bactericidal agent or both of them at least on a part of the inner surface of the path from the above oxygen enrichment means to the discharging means, thereby even when the various germs or the like grow in the middle of the path, the various germs or the like can be eliminated by the function of the antibacterial agent, the bactericidal agent or both of them disposed at least on the part of the inner surface of the path, so that the user can be prevented from aspiring the various germs or the like together with the oxygen-enriched air.
HAYASHI NOBUHIRO
Tomoyasu Sakaguchi
Hiroki Naito