REGENERATIVE CARTRIDGE OF ISOLATING RESPIRATORY SYSTEM Russian patent published in 2013 - IPC A62B19/00 

FIELD: fire-prevention facilities.

SUBSTANCE: invention relates to regenerative cartridges of isolating respiratory systems using fixed oxygen. The regenerative cartridge of isolating respiratory system comprises a housing with graining regenerative product, a launch briquette and a lid. In the central part of the housing along the axis the airway tube is installed. Inside the airway tube the perforated cup is located with a gap with the filter placed on it. The airway tube is made with diamond-shaped cross-section with rounded tops and is provided with perforation in the lower part. The cross sectional area of the airway tube is 0.06-0.08 cross-sectional area of the cartridge housing. The length of the airway tube from the wall of the cartridge housing along its minor axis is 0.3-0.4 minor axis length, the length of the airway tube from the wall of the cartridge housing along its major axis is 0.3-0.4 the major axis length. The lower part of the airway tube protrudes behind the layer of regenerative product.

EFFECT: regenerative cartridge has stable characteristics in the degree of waste of the regenerative product and the ratio of the resistance values during inhalation and exhalation.

2 dwg