Product manifolds for use with portable oxygen concentrators and portable oxygen concentrators including such product manifolds. A product manifold for use with a portable oxygen concentrator includes a first product port, a second product port, an accumulator port, an output port, and a flow path. The flow path operatively coupling each of the first product port, the second product port, the accumulator port, and the output port to one another. The product manifold includes a plurality of control ports. Each of the control ports fluidly coupling the flow path. The product manifold includes a first orifice disposed in a first portion of the flow path; a second orifice disposed in a second portion of the flow path; and a third orifice disposed in a third portion of the flow path. Each of the first orifice, the second orifice, and the third orifice being formed by an electrical forming process and having a thickness of between about 0.0025 inches and about 0.004 inches.

A process for producing an adsorbent comprising activated carbon, wherein the process comprises a molding step of molding an adsorbent through a plurality of stages, and wherein the molding step comprises molding in a final stage performed by tableting.

An energy system with hydration of magnesium hydride, including: a magnesium hydride storage tank, a Covapor unit, a storage battery, a hydrogen buffer and temperature regulation tank, a meter, a molecular sieve filter, a hydrogen fuel cell, an exhaust gas purifier, a water tank, and an air purifier. A water outlet of the hydrogen fuel cell is connected to a water inlet of the magnesium hydride storage tank. A hydrogen outlet of the magnesium hydride storage tank is connected to a hydrogen inlet of the hydrogen fuel cell. A thermal conductive medium outlet of the magnesium hydride storage tank is connected to a jacket of the molecular sieve filter and the Covapor unit, respectively, and a jacket outlet of the molecular sieve filter and an outlet of the Covapor unit are respectively connected to a thermal conductive medium inlet of the magnesium hydride storage tank.

A configurable oxygen concentrator for providing various flow rates and volumes of concentrated oxygen to a patient includes an electro-mechanical assembly having a housing with a first face, a second face and an outer surface. The oxygen concentrator also includes a first battery, a second battery, a first adsorbent container and a second adsorbent container. The first and second batteries are removably mountable to the first face and the first and second adsorbent containers are removably mountable to the second face to permit modification of the concentrated oxygen capacity and operating life of the concentrator as the patient progresses through different stages of a breathing disease. The first battery has a first battery capacity that is less than a second battery capacity of the second battery. The first adsorbent container has a first adsorbent capacity that is less than a second adsorbent capacity of the second adsorbent container.

An adsorbent material module includes a plurality of tubular adsorbent materials and a plurality of medium materials. Each of the tubular adsorbent materials includes at least one channel and at least one adsorbent layer. The adsorbent layer surrounds the at least one channel. The medium materials are coated on two ends of each of the tubular adsorbent materials, respectively, and the medium materials have a thermal conductivity function or an electrical conductivity function.

An air treatment system for at least partially removing at least one gaseous contaminant contained in indoor air of a room structured for human occupants. The system may comprise an air treatment assembly having an indoor air inlet configured to receive indoor airflow directly from a room, a regenerable adsorbent material configured to adsorb at least one gaseous contaminant contained in the indoor airflow, at least one airflow element for directing the indoor airflow to flow through the air treatment assembly, an indoor air outlet for expelling the indoor air, from the air treatment assembly back into the room, a purge air inlet configured to receive and direct purge air over and/or through the adsorbent material for removal of at least a portion of the at least one gaseous contaminant, and a purge air outlet for expelling the purge air out of the air treatment assembly.

A system for extracting carbon dioxide from a mixture of gases that include at least carbon dioxide, wherein a reservoir is provided that contains a material capable of adsorbing the carbon dioxide, the reservoir having an inlet for the mixture and an outlet for a mixture that is at least partially purified of carbon dioxide, where the system also includes at least one element for heating the reservoir, at least one electronic control circuit that causes a heating of the reservoir when at least one condition is fulfilled, so as to give rise to the desorption of the carbon dioxide adsorbed on the material contained in the reservoir.

The present disclosure provides, in one embodiment, a filter device comprising a mouthpiece, a filter assembly in communication with the mouthpiece for filtering air exhaled into the mouthpiece, and an outlet check valve which permits air to be exhaled through the mouthpiece into the filter assembly, and substantially prohibits air from being inhaled from the filter assembly into the mouthpiece.

An air cleaner includes a case, an air inlet, an air outlet, a grill covering the air inlet to filter airborne oil droplets, a fan to suction air through the air inlet and discharge air out of the air outlet, a roll filter provided between the grill and the fan to filter oil mist, and a filter roller to cut the roll filter. The roll filter includes a roller and a filter sheet wound around the roller, and the filter sheet may be unwound to extend behind the grill. When the filter sheet becomes dirty, the roll filter is further unwound so that a clean section is provided behind the grill, and the filter cutter may cut off the dirty section. During cutting, a clamp holds down the filter sheet. The case includes a slit through which the dirty section of the filter sheet passes for discarding.

An air filter including a filter support that supports polymeric sorbent particles. The polymeric sorbent is the reaction product of a divinylbenzene/maleic anhydride precursor polymeric material with a nitrogen-containing compound. The air filter may be used for capturing e.g. reactive gases.