Dragerwerk Aktiengesellschaft

Draegerwerk, Ag

Uwe Gerdts

Rainer Ernst

Karsten Vogeler

Udo Burchardt

Hans-Christoph Bechthold

The invention relates to a chemical oxygen generator having a chemical charge arranged within a housing. This chemical charge is brought to an exothermal oxygen-releasing reaction by an ignition device with the reaction running through the chemical charge in the form of a reaction front defining a surface and starting from the ignition-end wall of the housing. The oxygen generator has at least one reaction-control member arranged within the chemical charge. A generator of this kind is improved in that the oxygen flow and the supply duration can be influenced by the material and/or the shape of the reaction-control member. The improvement is achieved in that one or more reaction-control members made of sheet metal are arranged parallel to the direction of movement of the reaction front. As an alternative, the reaction-control member can be configured in the form of a spiral conveyor which is made of sheet metal or a thermally-insulating material. Furthermore, the reaction-control member can be a spirally-wound band made of sheet metal or a thermally-insulating material and arranged in a can-shaped housing.

Chemical oxygen generator having a reaction-control member

A device for decomposition of a multicomponent gas, especially air, and its enrichment in at least one component, whereby a supply gas line connects a gas source to a first device having a separation forechamber, and a second separation chamber. A branch line is connected to the forechamber from which a secondary product gas can be removed. Each of the separation chambers can be operated in the favorable pressure range for an effective separation, especially when operating at low supply gas pressures. The configurations of the separation chambers are oriented to the required demand for the individual components. Also, the efficiency of a permeation device having a permeation chamber and a retentate chamber is improved. For this purpose, the separation forechamber and the permeation chamber are operated in parallel and both are supplied with feed gas, whereby the permeate chamber of the permeation device can be flushed with the waste gas from the separation forechamber across the branch line.

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Ratzeburg, Germany

Uwe Gerdts