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Controlling oxygen concentrator timing cycle based on flow rate of oxygen output

A concentrator and controller technology, which is applied in the field of oxygen concentrator timing cycle control based on the oxygen output flow rate, can solve the problems of reducing oxygen purity, unfavorable carrying nitrogen, unfavorable and other problems, and achieves improved reliability, significant cost savings, and low oxygen flow rate Effect

Active Publication Date: 2017-02-22
CAIRE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A fixed cycle time detrimentally reduces the purity of the oxygen delivered at low flow rates and detrimentally entrains nitrogen at high flow rates by retaining argon in the oxygen produced

Method used

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  • Controlling oxygen concentrator timing cycle based on flow rate of oxygen output
  • Controlling oxygen concentrator timing cycle based on flow rate of oxygen output
  • Controlling oxygen concentrator timing cycle based on flow rate of oxygen output

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Embodiment Construction

[0014] A gas concentrator system is disclosed that includes a controller that selectively controls the gas flow through two or more gas streams based on at least two of a measured gas flow rate, a measured ambient temperature, and a measured ambient pressure. At least a portion of the circulation of a pressurized gas mixture of multiple sieve beds; in order to reduce or optimize the pressure and associated compressor load for optimum efficiency, cost, size or other design parameters of concern or any of these combination. The controller can vary the cycle time and switching time between pressurization mode, equalization mode and discharge mode in order to reduce peak pressure and compressor load. In one embodiment, the system includes two or more independent valves that control the flow of the pressurized gas mixture to the sieve bed. In this regard, the controller selectively controls two or more valves based on at least two of the measured flow rate, ambient temperature, an...

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Abstract

A control circuit of an oxygen concentrator maintains pressure within a compressor of the oxygen concentrator. The control circuit includes a microprocessor that controls functioning of a controller based on two or more of: a user-adjustable flow rate of oxygen delivered by the oxygen concentrator to a user, an ambient temperature, and an ambient pressure. The functioning of the controller further controls the adsorption of various gases by sieve beds of the oxygen concentrator to produce oxygen enriched gas.

Description

[0001] Cross References to Related Applications [0002] This application claims co-pending U.S. Patent Application Serial No. 61, entitled "Controlling Oxygen Concentrator Timing Cycle Based on Flow Rate of Oxygen Output," filed March 28, 2014 / 971632 priority. This provisional application is incorporated herein by reference and claims priority up to the filing date. Background technique [0003] Oxygen concentrators typically allow a user (eg, a patient) to adjust the oxygen flow rate based on a clinician's recommendation. Mechanically, these oxygen concentrators include a control scheme for regulating the oxygen flow rate. An oxygen concentrator typically includes a compressor to compress ambient air to support oxygen production, one or more molecular sieve beds to concentrate the oxygen, and an oxygen tank to store the concentrated oxygen. [0004] Traditional control schemes for such oxygen concentrators include high pressure molecular sieve beds at low oxygen flow rat...

Claims

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Application Information

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IPC IPC(8): A61M16/10B01D53/14
CPCA61M2205/3358B01D53/0476B01D2255/50B01D2256/12B01D2257/102B01D2259/40009B01D2259/40081B01D2259/402B01D2259/4533A61M16/202A61M16/101A61M16/0063A61M16/201A61M2202/0208A61M2205/3334A61M2205/50A61M2205/3368
Inventor B.哈特
Owner CAIRE