Abstract: There is provided a portable oxygen concentrator. The portable oxygen concentrator comprises a sieve bed comprising an inlet and an outlet; a first region of adsorbent material adjacent the inlet; and a second region of adsorbent material adjacent the outlet. The first and second regions of adsorbent material comprise beads of adsorbent material. The first region comprises beads of a first size and the second region comprises beads of a second size which is larger than the first size.

Abstract: A rotary control valve and a sieve bed module assembly for use in pressure swing adsorption processes to make enriched oxygen product gas for therapy in patients is disclosed. The valve includes a stepping motor with a single shaft extending between ends. At ends of the valve, an air side valve function and oxygen side valve function are provided. Each end includes a stationary plate (stator) with ports, and a disc (rotor) that rotates with the shaft, opening and closing ports to achieve the desired valve function. The valve is integrated into the assembly between two sieve beds and a product storage tank is directly coupled to the oxygen side. Placement of the motor, shaft, and movable parts in the valve and mounting of the beds, valve, and tank in the assembly, result in more compact designs. The motor can be programmed to obtain multiple, different PSA processes and flexibility.

Abstract: A rotary control valve and a sieve bed module assembly for use in pressure swing adsorption processes to make enriched oxygen product gas is disclosed. The valve includes a stepping motor with a single shaft extending between ends. At ends of the valve, an air side valve function and oxygen side valve function are provided. Each end includes a stationary plate (stator) with ports, and a disc (rotor) that rotates with the shaft, opening and closing ports to achieve the desired valve function. The valve is integrated into the assembly between two sieve beds and a product storage tank is directly coupled to the oxygen side. Placement of the motor, shaft, and movable parts in the valve and mounting of the beds, valve, and tank in the assembly, result in more compact designs. The motor can be programmed to obtain multiple, different PSA processes and flexibility.

Abstract: A rotary control valve and a sieve bed module assembly for use in pressure swing adsorption processes to make enriched oxygen product gas for therapy in patients is disclosed. The valve includes a stepping motor with a single shaft extending between ends. At ends of the valve, an air side valve function and oxygen side valve function are provided. Each end includes a stationary plate (stator) with ports, and a disc (rotor) that rotates with the shaft, opening and closing ports to achieve the desired valve function. The valve is integrated into the assembly between two sieve beds and a product storage tank is directly coupled to the oxygen side. Placement of the motor, shaft, and movable parts in the valve and mounting of the beds, valve, and tank in the assembly, result in more compact designs. The motor can be programmed to obtain multiple, different PSA processes and flexibility.

Abstract: A rotary control valve and a sieve bed module assembly for use in pressure swing adsorption processes to make enriched oxygen product gas is disclosed. The valve includes a stepping motor with a single shaft extending between ends. At ends of the valve, an air side valve function and oxygen side valve function are provided. Each end includes a stationary plate (stator) with ports, and a disc (rotor) that rotates with the shaft, opening and closing ports to achieve the desired valve function. The valve is integrated into the assembly between two sieve beds and a product storage tank is directly coupled to the oxygen side. Placement of the motor, shaft, and movable parts in the valve and mounting of the beds, valve, and tank in the assembly, result in more compact designs. The motor can be programmed to obtain multiple, different PSA processes and flexibility.

Abstract: The invention relates to an oxygen separation device (12, 14), comprising a gas inlet (29, 31) at a primary side for guiding a flow of oxygen comprising gas into the oxygen separation device (12, 14) and having a gas outlet (33, 35) at a secondary side for guiding a flow of oxygen enriched gas out of the oxygen separation device (12, 14), at least one oxygen separation area (20, 22) with an oxygen separation sorbent (16, 18) being capable of separating oxygen from an oxygen comprising gas by sorbing at least one component of the oxygen comprising gas apart from oxygen and being contaminatable by a contaminant, and a decontamination area (21, 23) with a decontamination material (17, 19) for decontaminating the oxygen comprising gas from at least one contaminant, wherein the oxygen separation area (20, 22) and the decontamination area (21, 23) are fluidly connected by a spacer (76, 78) comprising at least one diffusion reducing channel (80, 82), wherein the spacer (76, 78) has a value of diffusion reduction rR

Abstract: The present system is an adsorption system for separating air into a concentrated gas component, which has an air supply, a compressor for receiving and compressing the air supply, providing a compressed air supply, and molecular sieve material for separating the compressed air supply into a concentrated gas component. The adsorption system delivers at least 5 liters per minute (LPM) of concentrated gas component from the molecular sieve material in which the system has a specific total weight per LPM<9 lbs/LPM. Additionally, an output quantity of the concentrated gas is delivered by the adsorption system and a purging quantity of the concentrated gas is dispensed into a sieve chamber of the adsorption system undergoing a purge cycle. The purging quantity has a value equal to or less than the difference between the maximum quantity and the output quantity, and the purging quantity is controlled based on the output quantity.

Abstract: The invention relates to an oxygen separation device (12, 14), comprising a gas inlet (29, 31) at a primary side for guiding a flow of oxygen comprising gas into the oxygen separation device (12, 14) and having a gas outlet (33, 35) at a secondary side for guiding a flow of oxygen enriched gas out of the oxygen separation device (12, 14), at least one oxygen separation area (20, 22) with an oxygen separation sorbent (16, 18) being capable of separating oxygen from an oxygen comprising gas by sorbing at least one component of the oxygen comprising gas apart from oxygen and being contaminatable by a contaminant, and a decontamination area (21, 23) with a decontamination material(17, 19) for decontaminating the oxygen comprising gas from at least one contaminant, wherein the oxygen separation area (20, 22) and the decontamination area (21, 23) are fluidly connected by a spacer (76, 78) comprising at least one diffusion reducing channel (80, 82), wherein the spacer (76, 78) has a value of diffusion reduction rR o

Abstract: The present system is an adsorption system for separating air into a concentrated gas component, which has an air supply, a compressor for receiving and compressing the air supply, providing a compressed air supply, and molecular sieve material for separating the compressed air supply into a concentrated gas component. The adsorption system delivers at least 5 liters per minute (LPM) of concentrated gas component from the molecular sieve material in which the system has a specific total weight per LPM<9 lbs/LPM. Additionally, an output quantity of the concentrated gas is delivered by the adsorption system and a purging quantity of the concentrated gas is dispensed into a sieve chamber of the adsorption system undergoing a purge cycle. The purging quantity has a value equal to or less than the difference between the maximum quantity and the output quantity, and the purging quantity is controlled based on the output quantity.