Abstract: There is provided a CPAP device in which an outflow sound of air is reduced while size reduction/weight reduction is maintained. The CPAP device includes a blower unit 10 which houses a turbofan 50 to draw in air and sends out the air and in which an air outflow opening to allow the air sent out from the turbofan 50 to flow out is formed, and a silencer 60 which is attached to one end of a hose 70 to feed the air flowing out from the air outflow opening to a mask 200 attached to a patient, is attachably and detachably attached to the air outflow opening of the blower unit 10 and reduces the outflow sound of the air flowing out from the air outflow opening, and the silencer 60 includes a regulating plate 69.

Abstract: A CPAP device in which the compatibility between size reduction/weight reduction and reduction of inflow sound is achieved is provided. The CPAP device includes a housing 11 which includes an air inflow opening 11a and an air outflow opening 11b, a turbofan 50 which is housed in the housing 11 to draw in air and send out the air, and a silencer 40 which is housed in the housing 11, composed of sound absorbing members 41 and 42, includes an air flow path 411 having a tabular shape, and reduces an inflow sound of the air flowing in from the air inflow opening 11a to feed the air to the turbofan 50.