| 摘要 |
FIELD: individual supplies. ^ SUBSTANCE: invention concerns devices of individual organism protection as a whole, particularly for protection of respiratory organs to create comfortable conditions at low, subnormal, elevated and high temperatures, and to recycle moisture lost with breath with complex air intake treatment, and can be applied in mining, chemical and construction industry etc. Respiration mask includes case with hole for oral respiration, made of thin damp-proof material, and insert. Insert includes several functional layers alternating in sequence and forming heat exchange surface in the form of convex pack of some to some dozen mm. Mask layer alternation algorithm is designed similar to human respiratory system structure and allows production of insulation masks which make up to 2 l of air sufficient for breath in closed limited space, including up to 500 ml of expired air and 1500 ml of air for compensation of reflex respiratory center aspiration. Curve radius and area of external surface exceed curve radius and area of internal surface, thus forming divergent microchannels of heat exchange surface. Mask features tape for attachment to human head. ^ EFFECT: extended operation capabilities. ^ 2 dwg |
