Ventilation assembly and ventilation device

Abstract

A ventilation assembly includes: an air blowing apparatus for sucking gas from an air suction port and discharging same from an air discharging port; and a housing internally provided with: an air feeding cavity in communication with the air suction port of the air blowing apparatus and provided with an air inlet in communication with the outside; an air discharging cavity in communication with the air discharging port of the air blowing apparatus and used for being connected to a ventilation tube worn by a patient; and a connecting cavity that allows the air feeding cavity to be in communication with the air discharging cavity, so that part of gas in the air discharging cavity flows back to the air suction port of the air blowing apparatus through the connecting cavity and air feeding cavity. The ventilation assembly solves the problem of large noise of ventilation assemblies and ventilation devices.

Dependencies are inferred from the claim text.