US 11,452,828 B2 · CPAP device

Abstract

According to one embodiment, a CPAP device includes a housing, a fan, and a sound absorbing material. The housing has a first air inlet and a first air outlet, and a flow channel guiding air sucked through the first air inlet to the first air outlet. The fan has a second air inlet and a second air outlet, the second air inlet is disposed in the direction intersecting the flow channel, and the second air outlet is disposed in the direction along the flow channel. The sound absorbing material is provided with a recess constituting a part of the flow channel and facing the second air inlet of the fan, the recess having a diameter which is greater than a diameter of the second air inlet of the fan and which is equal to or smaller than the width of the flow channel.

Claims9

Dependent claims

A CPAP device comprising:

a housing comprising a first air inlet and a first air outlet, and a flow channel guiding air sucked through the first air inlet to the first air outlet, wherein the flow channel comprises a first portion and a second portion;
a fan comprising a second air inlet and a second air outlet, the second air inlet being disposed in a direction intersecting the flow channel, the second air outlet being disposed in a direction along the flow channel;
and
a sound absorbing material provided with a recess constituting part of the flow channel and facing the second air inlet of the fan, wherein the first portion is upstream of the recess and extends between the first air inlet and the recess, and wherein a bottom of the recess is lower than a lowest point of the first portion of the flow channel.

1 more element

Dependencies are inferred from the claim text.

CPAP device

Life of this patent

CPAP device

Life of this patent

Abstract

Claims9