US 12,458,916 B2
Oxygen concentration device
Yuichi Hirai, Tokyo (JP); and Akinobu Muramoto, Tokyo (JP)
Assigned to Teijin Pharma Limited, Tokyo (JP)
Appl. No. 17/914,646
Filed by Teijin Pharma Limited, Tokyo (JP)
PCT Filed Mar. 25, 2021, PCT No. PCT/JP2021/012447
§ 371(c)(1), (2) Date Sep. 26, 2022,
PCT Pub. No. WO2021/193791, PCT Pub. Date Sep. 30, 2021.
Claims priority of application No. 2020-058147 (JP), filed on Mar. 27, 2020.
Prior Publication US 2023/0120349 A1, Apr. 20, 2023
Int. Cl. B01D 53/047 (2006.01); A61M 16/10 (2006.01); B01D 53/04 (2006.01)
CPC B01D 53/047 (2013.01) [A61M 16/101 (2014.02); B01D 53/0415 (2013.01); B01D 2253/108 (2013.01); B01D 2256/12 (2013.01); B01D 2257/102 (2013.01); B01D 2259/402 (2013.01); B01D 2259/4533 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A pressure swing adsorption oxygen concentration device equipped with an adsorption cylinder filled with an adsorbent selectively adsorbing nitrogen rather than oxygen to separate and generate oxygen in pressurized air, a compressor to supply pressurized air, and a flow path switching means for switching between a flow path for an adsorption step and for a desorption step, wherein the adsorption cylinder is a replaceable adsorption cylinder cartridge, and an axis line of the adsorption cylinder, which is the gas flow direction, intersects with either connection axis in an end part for supplying pressurized air to the adsorption cylinder or an end part for extracting oxygen from the adsorption cylinder,
wherein the adsorption cylinder cartridge is equipped with two adsorption cylinders, one of which is generating oxygen in an adsorption step while the other adsorption cylinder is performing a desorption step to desorb nitrogen for regeneration, and an adsorption cylinder fixing base having two flow paths for supplying pressurized air to each adsorption cylinder in a direction perpendicular to the gas flow direction in the cylinder and a raw material air supply end part, and both are fixed in an integrated state,
wherein a piping nozzle to supply pressurized air from the compressor via the flow path switching means and the raw material air supply end part of the adsorption cylinder cartridge form a connection mechanism with detachable fitting, and an O-ring is provided at a concave part of the raw material air supply end part of the fixing base.