Breathing protective device

Abstract

The respiratory protection device comprises a filter body (1) having a filter (8) with a filter chamber (40) and a first wall part (45) with a plurality of through holes (47, 47a), at least one The filter (2) in the filter part in the wall part, and the mouthpiece (9) which is arranged to be introduced and received in the user's mouth and the opening in the second wall part (46) of the filter part (8) There is an air passage between ( 53 ) and an opening ( 54 ) at the end of the mouthpiece to be introduced into the user's mouth. The feature is: the filter part (8) has a first end (5), a second end (7) and first and second wall parts (45, 46) extending between the two ends, the filter part is elongated, when the mouth When the profile is inserted into the user's mouth, it extends parallel to the line between the corners of the user's mouth. The first wall part of the filter part has a plurality of through holes (47, 47a) in at least one area, which in the area where the through holes are placed The middle and inner sides extend straight in the direction of the long axis of the filter, the filter part is placed in the filter part chamber, along the second wall part and covers the opening of the wall part, a stopper arranged at the first end is closed during inhalation and opened during exhalation A return valve (3, 33), at least one passage (40) for exhaled air extending between the opening of the first wall part of the filter part and the check valve at the first end of the filter part.

Description

technical field [0001] The invention relates to a respiratory protection device comprising a filter body having a filter with a filter chamber and a first wall part having a plurality of through holes, the respiratory protection device comprising at least one A filter in the filter chamber in the wall part and a mouthpiece arranged to be introduced into and received in the user's mouth, and an opening in the second wall part in the filter part and at its end There is an air passage between an opening to be introduced into the user's mouth. Background technique [0002] Respiratory protection in use today is either the very advanced but traditional gas mask, or simpler respiratory protection that covers the mouth and nose. Gas masks have their own specific field, being used in extremely hazardous environments where advanced air purification is required. Simple, traditional mouth and nose covering respiratory protection devices are widely used in environments where air purif...

AI Technical Summary

Problems solved by technology

However, all of the protective devices disclosed in these publications have deficiencies and / or disadvantages and have not achieved any widespread use to the best of the Applicant's knowledge.

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