PURPOSE: To obtain an equipment for enriching oxygen capable of simplifying the constitution, the structure and control thereof and furthermore of being efficiently operated.
CONSTITUTION: Adsorption columns 15, 16 packed with a nitrogen adsorbent 6 and a moisture adsorbent 7 are provided. On air pump 2, a five-way valve 3 and a check valve 4 are provided at one piece respectively. An equipment for enriching oxygen is controlled only by ON/OFF of the five-way valve 3 exclusive of operation of the air pump. Further the five-way valve 3 is turned ON/OFF by detecting the states of the adsorbents with an oxygen sensor 10 or a pressure sensor 11. The equipment is miniaturized and the constitution, the structure and control are simplified according to it. The equipment is obtained which is capable of being efficiently operated in accordance with change and deterioration in performance of the adsorbents.
NAKA REIJI
KAWASHIMA MASAE
TSUNODA TERUO
YAMAZAKI HIROSHI
YAMASHITA HISAO
YAMADA RYOKICHI
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