초록 ▼

In addition to oxygen concentrator apparatus utilizing two zeolite beds and alternating, pressure controlled pressurization and exhaust cycles, with a swash plate cylindrical pump having a pressure sensitive idle mode, improved oxygen concentrator apparatus is also disclosed. The improved oxygen con

In addition to oxygen concentrator apparatus utilizing two zeolite beds and alternating, pressure controlled pressurization and exhaust cycles, with a swash plate cylindrical pump having a pressure sensitive idle mode, improved oxygen concentrator apparatus is also disclosed. The improved oxygen concentrator apparatus has an isothermal, high volume, low pressure air flow system with unrestricted air conducting lines and ports throughout for more efficient and effective oxygen production. It includes a unique rotary vane pump designed for essentially isothermal air pumping and has precision collet mounted rotor with centering apparatus, tapered vanes for reduced wear and erosion, and combination cast iron pump chamber liner with external aluminum finned casing to enhance both durability and heat dissipation. It also includes a combination double one-way and balancer valve for controlling the flow of oxygen-enriched air downstream from the zeolite beds.

대표청구항 ▼

Oxygen concentrator apparatus, comprising: two beds of zeolitic material, each bed being in an enclosed container; a pump for pumping air into said zeolitic bed, said pump having an internal chamber, an intake port for conducting air into said chamber, an exhaust port for conducting air out of said

Oxygen concentrator apparatus, comprising: two beds of zeolitic material, each bed being in an enclosed container; a pump for pumping air into said zeolitic bed, said pump having an internal chamber, an intake port for conducting air into said chamber, an exhaust port for conducting air out of said chamber, and air moving means for moving air from said intake port to said exhaust port, said exhaust port being sufficiently large in relation to said chamber to result in substantially isothermal air flow through said pump; sequence valve means for directing air from said pump first to one of said zeolitic beds while exhausting the other zeolitic bed to the atmosphere, and alternately, for directing air from said pump to said other zeolitic bed while exhausting said one zeolitic bed to the atmosphere, said valve means having internal ducts and ports therein at least as large in cross-sectional area as said exhaust port on said pump such that there is no restriction to air flow therethrough, and air flow pipes connecting said exhaust port to said sequence valve means and connecting said sequence valve means to said beds, all of said air flow pipes having cross-sectional areas at least as large as the cross-sectional of said exhaust port such that there is no restriction to air flow therethrough. In the method of concentrating oxygen, utilizing the steps of pumping air through one zeolitic bed while purging and exhausting air from a second zeolitic bed by venting said second zeolitic bed to the atmosphere from one end and directing a portion of oxygen-enriched air from said first bed into the opposite end of said second bed and vice versa in sequential steps, the improvements comprising the steps of pumping and flowing the air isothermally into said beds through conduits and valves, all of which have no restrictions in cross-sectional area therethrough from the air pump to the beds.