A control system for an onboard oxygen generating system (OBOGS) includes a gain control communicatively coupled to an oxygen sensor configured to measure an oxygen concentration outputted from the OBOGS. The gain control selectively switches between unbalanced and balanced bed cycling modes of the OBOGS to produce a target oxygen concentration based on demand. A corresponding method includes providing a gain control communicatively coupled to an oxygen sensor configured to measure an oxygen concentration outputted from the OBOGS, controlling the OBOGS to operate in the unbalanced bed cycling mode when a low demand is placed on the OBOGS whereby the gain control provides a short bed cycle and a corresponding long cycle of a fixed cycle time, and switching the OBOGS to operate in the balanced bed cycling mode when a high demand is placed on the OBOGS. The balanced bed cycling mode operates at a decreased bed cycle time.

Method for separating gaseous carbon dioxide from air, in particular from ambient atmospheric air (1), by cyclic adsorption/desorption using a sorbent material (3), wherein said sorbent material (3) is a solid inorganic or organic, non-polymeric or polymeric support material functionalized on the surface with amino functionalities capable of reversibly binding carbon dioxide, with a specific BET surface area, preferably measured by nitrogen adsorption, in the range of 1-20 m2/g.

A super enriched personal oxygen concentrator system that discards argon as waste, including a personal oxygen concentrator operatively attached to a first bed for absorbing nitrogen and second bed for absorbing oxygen, and an argon waste outlet operatively attached to the first and second beds for eliminating argon from the system. A method of using the system of the present invention, by absorbing nitrogen from compressed air from a POC with a first bed, absorbing oxygen with a second bed, discarding unabsorbed argon from the compressed air as waste, desorbing enriched oxygen product, and providing a 99% oxygen product. A fluid supply warning and communication system, wherein a primary fluid reservoir is connected to the personal oxygen concentrator system. A method of using the fluid supply warning and communication system.

A ventilator includes a bidirectional breath detection airline and a flow outlet airline. The flow outlet airline includes an airline outlet. The flow outlet airline is configured to be connected to an invasive ventilator circuit or a noninvasive ventilator circuit. The breath detection airline includes airline inlet. The airline inlet is separated from the airline outlet of the flow outlet airline. The ventilator further includes a pressure sensor in direct fluid communication with the breath detection airline. The pressure sensor is configured to measure breathing pressure from the user and generate sensor data indicative of breathing by the user. The ventilator further includes a controller in electronic communication with the pressure sensor. The controller is programmed to detect the breathing by the user based on the sensor data received from the pressure sensor.

A VOC removal system removes VOCs from an exhaust fluid of a semiconductor process. The VOC removal system measures current VOC removal parameters and passes them to an analysis model trained with a machine learning process. The analysis model predicts a future VOC removal efficiency based on the current VOC removal parameters. The analysis model generates adjustment parameters based on the current VOC removal parameters and the predicted future VOC removal efficiency. A control system adjusts the VOC removal system based on the adjustment parameters.

Deleterious gas is captured from atmospheric air using capture units dispersed across a geographic region. Each unit has a filter that is capable of capturing compounds from the gas from air when air is passed through the filter by fans. The units additionally include a sensor for sensing a level of the gas in the air. An electronic processor controls the fan, and communicates data from the sensor to other units and/or a central electronic processor. The electronic processors of the units or the central processor controls the fan speed of units in areas of higher concentration of the gas, selecting which units to become active based upon a proximity of each unit to the gas concentration, as well as a direction of movement of the concentration. A communicated presence of errors or a low battery state of a unit, is used by the processor to select other units nearby for operation instead of the affected unit.

A wheel lock or clip for maintaining position of a thumbwheel or wheel of a rotary actuated delivery device includes an arcuate or curved body having a live hinge extending therefrom, the hinge connected to an arm having an engagement tooth extending therefrom. The tooth is operatively connected to tab for actuation by a user to disengage the engagement tooth from teeth of gear or barrel of a wheel or a thumbwheel of the rotary actuated device to thereby allow free movement of the wheel or thumbwheel.

Provided is a system for adsorbing a gaseous component comprising nitrogen from a pressurized flow of air containing the gaseous component. The system comprises a first adsorption bed, and a second adsorption bed. Each of the adsorption beds are suitable for selectively adsorbing the gaseous component from the flow of air to produce a product gas having a higher oxygen concentration than that of the air. The system includes an adjustable feed gas supply which alternately supplies the first adsorption bed and the second adsorption bed with the air. The first adsorption bed is supplied with air during a first half cycle of operation of the system, and the second adsorption bed is then supplied with air during a second half cycle of operation of the system. The feed gas supply enables adjustment of at least one parameter relating to the amount or respective amounts of air being supplied to the first adsorption bed in the first half cycle and/or to the second adsorption bed in the second half cycle. A connection and valve assembly is provided between the first and second adsorption beds. The connection and valve assembly diverts a portion of the product gas, produced from the respective absorption bed being supplied with the flow of air during the respective half cycle, to the other adsorption bed. This causes previously adsorbed gaseous component to be released from latter. The released gaseous component then escapes from the system, e.g. to the atmosphere, via a vent. A sensor system determines a measure of the flow rate of waste gas, including the released gaseous component, escaping from the system via the vent. The at least one parameter can be adjusted based on the measure in order to tune the performance of the system. Further provided is a method for operating the system.

A hybrid nitrogen gas generation system includes a membrane nitrogen gas generator and a pressure swing absorption nitrogen generator. A gas comprising nitrogen is purified to a first nitrogen purity using one of the membrane nitrogen gas generator and the pressure swing absorption nitrogen generator. The gas is either bypassed around the other of the membrane nitrogen gas generator and the pressure swing absorption nitrogen generator to provide the gas having the first nitrogen purity or the gas is purified to a second nitrogen purity using the other of the membrane nitrogen gas generator and the pressure swing absorption nitrogen generator.

An oxygen concentration system may comprise a pressure sensor, a movement sensor, and a controller configured to use one or more pressure signals obtained from the pressure sensor and a movement signal obtained from the movement sensor to determine when to release a bolus of oxygen enriched air. In some implementations, the controller may adjust a trigger threshold based on an initial pressure signal obtained from the pressure sensor and the movement signal obtained from the movement sensor. In some implementations, the controller may adjust a pressure signal obtained from the pressure sensor based on the movement signal obtained from the movement sensor. In some implementations, the controller may detect a potential onset of inhalation from a pressure signal obtained from the pressure sensor and determine whether to verify the potential onset of inhalation based on the movement signal obtained from the movement sensor.