Humdifier and heater for air to be inhaled for connection to an inhalation conduit of a respirator
AssigneeDragerwerk Aktiengesellschaft
InventorsGeorg-Wilhelm Oetjen, Frank Benthin
Life of this patent
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Abstract
A humidifier and heater for air to be inhaled for connection to an inhalation conduit of a respirator comprises a housing having a bundle of vapor permeable fiber tubes which have evaporation fiber wall surfaces extending therethrough. A packing is arranged adjacent each end of the housing in said tubes and seals the space in the housing around the tubes between the packing. The tubes in the interior of the housing in the space have a coating on their exteriors of at least either copper or silver. Warm water is circulated into the housing in the space around the tubes and the inhalation air is directed through the tubes or vice versa.
Claims3
A respirator humidifier and heater for air to be inhaled for connection to an inhalation conduit of a respirator, comprising a housing having a bundle of vapor permeable fiber tubes with evaporation fiber wall surfaces extending therethrough, a packing adjacent each end of said tubes sealing a space in said housing around said tubes between said packings, said tubes and the interior of said housing having a thin porous coating on their exterior surfaces of at least one of copper and silver, means for passing inhalation air into the housing in the space around said tubes between said packings, means for circulating warm water through said tubes, wherein said at least one of copper and silver are evaporated onto the surfaces in a vacuum.
A respirator humidifier and heater for air to be inhaled for connection to an inhalation conduit of a respirator, comprising a housing having a bundle of vapor permeable fiber tubes with evaporation fiber wall surfaces extending therethrough, a packing adjacent each end of said tubes sealing a space in said housing around said tubes between said packings, said tubes and the interior of said housing having a thin porous coating on their exterior surfaces of at least one of copper and silver, means for passing inhalation air into the housing in the space around said tubes between said packings, means for circulating warm water through said tubes, wherein said at least one of copper and silver are applied to the surfaces by sputtering.
Dependencies are inferred from the claim text.