Ventilator for use in e.g. breathing assistance apparatus, has leakage collection chamber, which is intermediate between volute and compartment, traversed by shaft of motor, where chamber includes exhaust outlet

摘要

The ventilator has a compartment (6) in which an electric motor (5) is placed, where the compartment includes an end wall (13) traversed by a shaft of the motor and supplied by pressurized air. Leakage collection chamber (7) intermediate between a volute (2) and the compartment is traversed by the shaft of the motor, where the chamber includes an exhaust outlet (20). The shaft of the motor includes a deflecting body (17) to separate the respective flows of air and oxygen and to orient the flows according to a direction perpendicular to the shaft.