42 results about "Chemical oxygen generator" patented technology

The oxygen generation system includes a chemical oxygen generator that creates oxygen through an exothermic chemical reaction that creates sufficient heat to pose a serious risk to a user. The oxygen generation system therefore includes a containment layer to permit safer administration of oxygen from a chemical oxygen generator by shielding a user from and/or dissipating the heat generated by the chemical generator. The oxygen generation system may be handheld and portable for use in extreme, remote, and/or hostile conditions, locations, environments, and situations with a simple activation method easily operated under stress without any preparation or maintenance.

Provided herein is a hybrid system for generating oxygen on-board an aircraft for passengers and/or flight crew to breath. The system includes a first chemical oxygen generator component configured to promptly supply oxygen suitable for breathing upon an emergency situation arising and during an initial descent mode. Heat produced from the exothermic decomposition reactions inherent in several types of chemical oxygen generators can be harvested and feed to a second oxygen generator. The second oxygen generator is a solid electrolyte oxygen separation system that catalytically separates oxygen from air inside specialized ceramic materials at high temperatures, about 650° C. to 750° C., using electrical voltage. The ability to feed heat from the first oxygen generator to the second oxygen generator substantially reduces the lag time until the second ceramic oxygen generator is available to take over as the oxygen supply.

The present invention provides a system and method for supplying, generating, conserving, and managing oxygen that is ideally suited for use on-board an aircraft for supply of breathable oxygen to passengers and flight crew. The system includes several components that together optimize oxygen utilization while reducing costs from maintenance and added weight of traditional pressurized gaseous cylinders. Components of the system include a pressurized cylinder of oxygen enriched gas or a chemical oxygen generator for rapid use in emergency situations, an on-board oxygen generator (OBOG) of the ceramic oxygen generator (COG) type incorporating solid electrolyte oxygen separation (SEOS) technology, a controller, a pulsed oxygen supplier, a crew/passenger breathing mask, and one or more sensors including sensors that detect inhale/exhale phases and communicate with the controller so that flow of oxygen may be regulated for conservation and to adapt to physiological needs.

A chemical oxygen generator includes multiple parallel sequentially connected chemical core sections that extend the duration of operation of the chemical oxygen generator. An end of a first core section is contiguous with a chemical core high reactivity section, and a thermal insulation layer is disposed between an end of a second core section and the chemical core ignition plate, as well as between the bodies of the first and second core sections. A chemical core transition section is disposed between the other end of the first core section and the second core section, to insure that the reaction front propagates properly.

A portable chemical oxygen generator for delivering oxygen to a patient is described. The generator includes a housing containing a reaction chamber. Within the reaction chamber is a quantity of a peroxide adduct. A valve is provided with a lower portion of the valve in fluid communication with the reaction chamber. An upper portion of the valve is in fluid communication with a reservoir that holds a quantity of an aqueous solution. An internal chamber is formed within the valve by releasable seals that separate the internal chamber from the upper portion of the valve and a lower portion of the valve. The internal chamber holds a quantity of a peroxide-decomposing catalyst. The generator also includes a valve actuator. Operation of the valve actuator releases the seals in the valve and creates a fluid path from the reservoir through the internal chamber into the reaction chamber. When the valve is actuated, the aqueous solution flows from the reservoir through the internal chamber and into the reaction chamber. This flow washes the catalyst into the reaction chamber along with the aqueous solution. The solution and catalyst mix with the peroxide adduct and cause an oxygen-generating reaction.

A thermite torch is disclosed that contains a thermite composition made of a bimodal mixture of nano-sized particles and micro-sized particles. Also disclosed is a tankless exothermic torch comprising a rod and a handle that contains a gas generating compound in the handle. The thermite torch gun does not require a tank of compressed gas. Elimination of this tank mitigates dangers and logistical burdens associated with it presence and use, without compromising operation or cutting performance. The rod may contain a high-density mixture of oxygen-releasing and/or heat-releasing chemicals. Preferably, the mixture comprises a bimodal-blend of nanometer and micrometer-sized particles in a closely-packed configuration to fill interstitial voids. The gun may contain an ignition module and power supply for initiating directed high-temperature flame jetting, and for turning it on/off/on when a solid-chemical oxygen generator is mounted in the gun.

The invention relates to an oxygen breathing device for an aircraft, in particular for oxygen supply to crew member in a cockpit of an aircraft, comprising a filter unit having an inflow port and an outflow port, the filter unit being adapted to extract nitrogen from an air flow flowing from the inflow port to the outflow port through the filter unit, wherein the filter unit is adapted to receive compressed air, preferably, bleed air from a precompressor stage of a turbine driving the aircraft, or directly by a separate electrically driven compressor, via a bleed air supply line connected to the inflow port, a first pressure regulator in the bleed air supply line, a first water separator which is arranged in the bleed air supply line in flow direction of the bleed air before the first pressure regulator and a connection port which can be brought in fluid communication with said outflow port of the filter unit and which is adapted to be coupled to at least one oxygen supply mask via an oxygen supply line. According to the invention, a chemical oxygen generator comprising at least one substance adapted to produce oxygen in a chemical reaction and to provide said oxygen to an outflow port of said oxygen generator is provided. The outflow port of said chemical oxygen generator is connected to an auxiliary oxygen supply line and a control unit is adapted to selectively provide oxygen from the filter unit or the chemical oxygen generator to an oxygen supply mask coupled to the connection port.

Detailed is an aircraft oxygen emergency device including a chemical oxygen generator, an oxygen supply line including a first line section connecting the chemical oxygen generator with a flow regulator unit, and a second line section connecting the flow regulator unit with at least one oxygen mask for supplying oxygen to a mouth or a nose (or both) of a person at a breathing pressure.

The invention relates to an emergency oxygen device for at least one passenger of an aircraft, comprising a chemical oxygen generator and/or oxygen pressure cylinder including an oxygen source and a starter unit adapted for initiating a reaction in said oxygen source producing oxygen, at least one oxygen mask each connected with the oxygen source such that an oxygen fluid flow from said oxygen source after said starter unit has initiated the reaction is receivable at the oxygen mask, an activation assembly for activating the starter unit, and whereby the activation assembly comprises an actuator assembly comprising a shape memory material based actuator. The invention further relates to a method for activating an emergency oxygen device for at least one passenger of an aircraft, initiating by means of a starter unit a reaction of an oxygen source producing oxygen, wherein a chemical oxygen generator and/or oxygen pressure cylinder includes the oxygen source, receiving at an oxygen mask an oxygen fluid flow from said oxygen source after said starter unit has initiated the reaction, wherein each of the oxygen masks is connected with the oxygen source, activating the starter unit by means of an activation assembly, whereby the passengers emergency release action and the reaction initiation of the source are coupled by means of a shape memory material based actuator of an actuator assembly, wherein the activation assembly comprises the actuator assembly.

The invention relates to a chemical oxygen generator drug block forming device, and belongs to the technical field of oxygen generators. The chemical oxygen generator drug block forming device comprises a base, fixed supporting columns, a mold fixing plate, a crossbeam plate, a pressure applying device, a mold core, a mold sleeve, a hollow mold, a compression lead screw, a handwheel and a pressingblock, the fixed supporting columns are arranged on the two sides of the base, the mold fixing plate and the crossbeam plate are sequentially arranged on the upper part of the base, the mold sleeve is mounted on the mold fixing plate, and the hollow mold is arranged in the mold sleeve; and the pressure applying device is located on the base, the mold core is arranged on the upper part of the pressure applying device, the pressing block is arranged on the lower part of the compression lead screw, the handwheel is arranged on the upper part of the compression lead screw, the handwheel drives the compression lead screw to move up and down, and the compression lead screw drives the pressing block to seal the hollow mold. The chemical oxygen generator drug block forming device can be used forlaboratory manufacturing or small-batch pressing of chemical oxygen generator drug blocks, meanwhile, the problem that drug blocks are prone to being broken during manual removing of an inner mold isavoided, demolding is convenient and fast, and the pressing efficiency of the drug blocks is improved.

The invention discloses an assembling line of an isolated chemical oxygen generator self-rescuer. The assembling line comprises stop cylinders, oxygen generation tank clamps, a circulating conveying assembling line device and oxygen generation tanks. The oxygen generation tank clamps are multiple, each oxygen generation tank clamp is uniformly arranged on the circulating conveying assembling line device and is fixedly connected with the circulating conveying assembling line device, and the oxygen generation tanks are installed in the oxygen generation tank clamps. The front of the operation direction of each oxygen generation tank is provided with one stop cylinder. Each oxygen generation tank clamp is composed of an oxygen generation tank clamp body and a tool plate integrated with the oxygen generation tank clamp body, wherein the tool plates are fixedly connected with the circulating conveying assembling line device. The assembling line is simple in structure, reasonable in design, and convenient to use and operate, belongs to a semi-automatic manual production line, greatly improves production efficiency of the isolated chemical oxygen generator self-rescuer, improves product quality, and achieves obvious effects on control for production cost due to the fact that labor is greatly saved due to the circulating conveying assembling line device.

The invention relates to a purification material and a purification bed layer for a chemical oxygen generator, and belongs to the technical field of gas purification. The total mass of the purification material finished product is 100%, and the purification material finished product comprises the following components in percentage by mass: 50%-95% of a carbon monoxide purifying material; 5%-50% of an acid gas purification material; the carbon monoxide purification material comprises a noble metal catalyst taking platinum and palladium as active components, the acid gas purification material is more than one of soda lime, quick lime and calcium hydroxide; the purification bed layer is provided with a top-layer solid filter material, and more than one layer of carbon monoxide purification material and more than one layer of acid gas purification material are arranged below the top-layer solid filter material. The purification material can improve the quality of gas generated by the chemical oxygen generator; the purification bed layer can increase the path length of gas generated by the chemical oxygen generator and improve the purification effect on impurity gas.

Described is an oxygen breathing device, including a casing, the casing accommodating, in a non-activated condition, an oxygen source, in particular a chemical oxygen generator or an oxygen pressure tank, a starter device for initiating a flow of oxygen out of the oxygen source, a buffer connected to the oxygen source, the buffer being adapted to temporarily store oxygen produced in the oxygen source, at least one oxygen mask connected via an oxygen supply line to the buffer wherein a flexible buffer is provided in the oxygen breathing device and connected to the oxygen source.