US 2012/0234173 A1Published application

Oxygen concentrator

AssigneeMetran Co., Ltd.

InventorsTran Ngoc PHUC, Shinichi Nakane

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Abstract

The present invention provides oxygen concentrators which achieve reliable pressure control in the oxygen columns with reduced number of components for pressure control in the oxygen columns, and also easy maintenance and reduced power consumption. PSA, PVSA, or VSA oxygen concentrator consisting of oxygen concentration columns BF1 and BF2, pressure control means for adjusting pressure in the oxygen concentration columns, and oxygen tank T for storing concentrated oxygen, comprises mechanical flow control means SC1 which regulates flow from the oxygen tank to the oxygen concentration columns. Pressures in the oxygen concentration columns BF1 and BF2 are kept within a predetermined range by the function of mechanical flow control means SC1 placed in between the oxygen concentration columns and the oxygen tank.

Claims6

Dependent claims

A PSA, PVSA, or VSA oxygen concentrator comprising at least one oxygen concentration column for concentrating oxygen to a predetermined range by swinging high pressure side and low pressure side of the oxygen concentration column to adsorb nitrogen from taken air;

a pressure controlling means for adjusting pressure of said oxygen concentration column;
and
an oxygen tank for storing generated concentrated oxygen;
said oxygen concentrator comprising:
the first mechanical flow control means placed between said oxygen concentration column and said oxygen tank;
said first mechanical flow control means passing generated concentrated oxygen from said oxygen concentration column to said oxygen tank when pressure difference between said oxygen concentration column and said oxygen tank reaches a predetermined range;
and
the second mechanical flow control means placed between said oxygen concentration column and said oxygen tank;
said second mechanical flow control means controlling flow from said oxygen tank to said oxygen concentration column, and keeping the pressure in said oxygen concentration columns in a predetermined range.

6 more elements

Dependencies are inferred from the claim text.