Ventilation and noise reduction housing and assembly, ventilation and moisture retention apparatus, breathing mask assembly, and breathing support device

Abstract

A ventilation and noise reduction housing and assembly, a ventilation and moisture retention apparatus, a breathing mask assembly and a breathing support device are provided. The ventilation and noise reduction housing includes a respiratory passage segment, one end thereof is a ventilation and noise reduction housing connection end, and the other end thereof is a respiratory tube communication end. The wall of the respiratory passage segment includes a mounting wall segment, that is provided with exhaust vents and a supporting protrusion structure protruding from the outer surface of the mounting wall segment, the supporting protrusion structure is used for supporting a ventilation and noise reduction core of a ventilation and noise reduction unit provided on the mounting wall segment, such that a ventilation gap is at least partially maintained between the ventilation and noise reduction core and the outer surface of the mounting wall segment.