METHOD OF PRODUCING A BREATHING MIXTURE AND AN APPARATUS FOR APPLYING THE METHOD

1. Method of producing a breathing mixture by mixing of compressed gases with regulated feed to a mask, characterized in that the gas mixture is fed in a circulating stream at a volume flow rate of 3-120 l/min, the mixture being cleaned of carbon dioxide, moisture and harmful trace contaminants wherein the temperature of said gas mixture being inhaled regulated within the range of -10 - +130 degree C, feeding to the mask binary or multi-component gas mixtures, regulating qualitative and quantitative composition thereof, the gas mixture contains oxygen and at least one of the following gases in quantities of up to 95 %: helium, and/or argon, and/or neon, and/or krypton, and/or xenon, and/or radon, and/or nitrogen, and/or nitrous oxide, and/or sulphur hexafluoride, or a mixture thereof. 2. Method as claimed in Claim 1, wherein pharmaceutical preparations can also be introduced into the breathing mixture. 3. Method as claimed in Claims 1 or 2, wherein the level of inhaled carbon dioxide can be adjusted in the range of 0.0001-5% using the exhaled carbon dioxide. 4. Method as claimed in one of the preceding Claims, wherein the resistance to inhale is reduced by raising the pressure. 5. Method as claimed in one of the preceding Claims, wherein the conditions of CO2 absorption are improved by increasing the velocity of said gas mixture flow through the absorbing layer and inhaled amount of CO2 is regulated by separating the inhaled gas mixture flow into two parts, one of which is fed through the absorber and the other around it. 6. An apparatus for producing a breathing mixture comprising a device for obtaining said gas mixture, having a source (1) of compressed gas, connected by pipes (6) via the mixture content regulators and gas mixture flow meter, a respirator bag (5), the inhale (17) and the exhale (18) valves with the mask (19), an oxygen gas analyser (14) and a control unit (8), wherein the device for obtaining said gas mixture represents containers (1) and (3) with compressed oxygen and, at least with one of the following gases: helium, and/or argon, and/or neon, and/or krypton, and/or xenon, and/or radon, and/or nitrogen, and/or nitrous oxide, and/or sulphur hexafluoride, or a mixture thereof, connected with said respirator bag (5) via pipes (6) having stop valves (2) and (4),wherein at least said container (1) with compressed oxygen is provided with a valve (7) remote controlled from said control unit (8) and the apparatus has a circulation loop, compri