Title:
OXYGEN CONCENTRATION APPARATUS, CONTROL METHOD, AND CONTROL PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/186175
Kind Code:
A1
Abstract:
Provided are: an oxygen concentration apparatus which can be prevented from the decrease in a pilot pressure in a supply flow path opening/closing part or a discharged gas flow path opening/closing part can be prevented, in which at least one of the supply flow path opening/closing part and the discharged gas flow path opening/closing part is a pilot-operated solenoid valve; a control method; and a control program. An oxygen concentration apparatus is provided, which is configured such that the application of a pressure to adsorption columns that have been decreased in pressure is started prior to a pressure equalization step, and therefore the decrease in pressure in both of the adsorption columns can be prevented during the pressure equalization step, resulting in the prevention of the decrease in pilot pressure in a supply flow path opening/closing part or a discharged gas flow path opening/closing part in which at least one of the supply flow path opening/closing part and the discharged gas flow path opening/closing part is a pilot-operated solenoid valve.
Inventors:
FUJITA NORIHIRO (JP)
Application Number:
PCT/JP2022/008494
Publication Date:
September 09, 2022
Filing Date:
March 01, 2022
Export Citation:
Assignee:
TEIJIN PHARMA LTD (JP)
International Classes:
C01B13/02; B01D53/047
Foreign References:
| JP2008173284A | 2008-07-31 | |||
| JP2008229493A | 2008-10-02 | |||
| JP2009532184A | 2009-09-10 | |||
| JP2011092622A | 2011-05-12 | |||
| US20170065926A1 | 2017-03-09 | |||
| JPH08257341A | 1996-10-08 | |||
| JP2002079030A | 2002-03-19 | |||
| JPH11207128A | 1999-08-03 | |||
| JP2006062932A | 2006-03-09 |
Attorney, Agent or Firm:
TAMEYAMA Taro (JP)
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