CPAP device

A CPAP device comprising:

• a blowing unit including a built-in blower;
• a housing case including the blowing unit;
• a water storage tank to be housed in a housing space of the housing case;
• and
• a heater to vaporize water stored in the tank, wherein
• the housing case includes an insertion-ejection opening for insertion and ejection of the tank,
• a portion of an internal surface of the housing case is a first surface slanted relative to a surface perpendicular to an insertion-ejection direction for the tank through the insertion-ejection opening and facing toward a side of the insertion-ejection opening,
• a first portion of an external surface of the tank is a first facing surface to come into direct or indirect contact with the first surface when the tank is housed in the housing space and a second portion of the external surface of the tank is a second facing surface opposite the first surface of the tank,
• the first surface or a surface among internal surfaces of the housing case surrounded by the first surface includes a first case aperture to provide communication between inside and outside of the housing case,
• the tank includes a first tank aperture to provide communication between inside and outside of the tank, in a position facing the first case aperture when the tank is housed in the housing space,
• wherein the tank is housed in the housing space such that the first facing surface and the second facing surface are at least partially enclosed by the housing case,
• wherein a first seal member being an elastic body to seal a space between the first case aperture and the first tank aperture is interposed between the first surface and the first facing surface, and
• wherein the first surface and the first facing surface are in contact with each other with the first seal member interposed therebetween when the tank is housed in the housing space,
• wherein
• the first seal member is shaped like a circular loop and has a laminated structure comprised of a plurality of layers with respect to a center axis direction of the circular loop of the first seal member, and
• one of the plurality of layers is comprised of a material differing in elastic modulus from a material of at least another one of the plurality of layers.

A CPAP device comprising:

• a blowing unit including a built-in blower;
• a housing case including the blowing unit;
• a water storage tank to be housed in a housing space of the housing case;
• and
• a heater to vaporize water stored in the tank, wherein
• the housing case includes an insertion-ejection opening for insertion and ejection of the tank,
• a portion of an internal surface of the housing case is a first surface slanted relative to a surface perpendicular to an insertion-ejection direction for the tank through the insertion-ejection opening and facing toward a side of the insertion-ejection opening,
• a first portion of an external surface of the tank is a first facing surface to come into direct or indirect contact with the first surface when the tank is housed in the housing space and a second portion of the external surface of the tank is a second facing surface opposite the first surface of the tank,
• the first surface or a surface among internal surfaces of the housing case surrounded by the first surface includes a first case aperture to provide communication between inside and outside of the housing case,
• the tank includes a first tank aperture to provide communication between inside and outside of the tank, in a position facing the first case aperture when the tank is housed in the housing space,
• wherein the tank is housed in the housing space such that the first facing surface and the second facing surface are at least partially enclosed by the housing case,
• a second portion of the internal surface of the housing case is a second surface intersecting with both of the insertion-ejection direction and the first surface and facing toward the side of the insertion-ejection opening,
• the second surface includes a second case aperture to provide communication between the inside and the outside of the housing case, and
• the second facing surface includes a second tank aperture to provide communication between the inside and the outside of the tank, in a position facing the second case aperture when the tank is housed in the housing space.

A CPAP device comprising:

• a blowing unit including a built-in blower;
• a housing case including the blowing unit;
• a water storage tank to be housed in a housing space of the housing case;
• and
• a heater to vaporize water stored in the tank, wherein
• the housing case includes an insertion-ejection opening for insertion and ejection of the tank,
• a portion of an internal surface of the housing case is a first surface slanted relative to a surface perpendicular to an insertion-ejection direction for the tank through the insertion-ejection opening and facing toward a side of the insertion-ejection opening,
• a portion of an external surface of the tank is a first facing surface to come into direct or indirect contact with the first surface when the tank is housed in the housing space,
• the first surface or a surface among internal surfaces of the housing case surrounded by the first surface includes a first case aperture to provide communication between inside and outside of the housing case,
• the tank includes a first tank aperture to provide communication between inside and outside of the tank, in a position facing the first case aperture when the tank is housed in the housing space,
• a first seal member being an elastic body to seal a space between the first case aperture and the first tank aperture is interposed between the first surface and the first facing surface,
• the first surface and the first facing surface are in contact with each other with the first seal member interposed therebetween when the tank is housed in the housing space,
• a stopper portion to prevent the tank from being removed through the insertion-ejection opening of the housing case to the outside of the housing case is mounted in the housing case, and
• the stopper portion is in contact with a contact portion of the tank from the side of the insertion-ejection opening in the insertion-ejection direction when the tank is housed in the housing space of the housing case.