Blower

1. A CPAP system for delivery of a flow of breathable gas at a continuously positive pressure in a range of about 2-30 cmH 2 O to a patient for treatment of sleep disordered breathing, the CPAP system comprising:

a patient interface including a sealing arrangement adapted to form a seal with a patient's nose and/or mouth; and

a PAP device including:

a casing adapted to fit on top of a patient's head in use, the casing including a wall structure defining a casing interior; and

a blower structured to generate the flow of breathable gas at the continuously positive pressure in the range of about 2-30 cmH 2 O, the blower including a housing and an outlet tube extending outwardly from the housing, the outlet tube structured to direct the flow of breathable gas exiting the blower,

wherein the blower and outlet tube thereof is enclosed within the wall structure of the casing,

wherein the outlet tube of the PAP device is in fluid communication with the patient interface, and the outlet tube of the PAP device is angled and/or curved along its length towards a lower wall of the wall structure of the casing so that the outlet tube is adapted to direct the flow of breathable gas towards the patient interface and the patient's nose and/or mouth.

2. The CPAP system according to claim 1 , wherein the blower is supported by the lower wall.

3. The CPAP system according to claim 1 , wherein the blower is suspended from an upper wall of the wall structure of the casing.

4. The CPAP system according claim 1 , wherein the outlet tube includes an inlet end and an outlet end, and the outlet end includes a deflection angle that is larger than a deflection angle of the inlet end.

5. The CPAP system according to claim 4 , wherein a top portion of the inlet end defines an angle with respect to horizontal of about 6° and a top portion of the outlet end defines an angle with respect to horizontal of about 13°, and a bottom portion of the inlet end defines an angle with respect to horizontal of about −2° and a bottom portion of the outlet end defines an angle with respect to horizontal of about 5°.

6. The CPAP system according to claim 1 , wherein the outlet tube of the blower is coupled to a casing outlet of the casing.

7. The CPAP system according to claim 6 , further comprising a flexible tube member coupled between the outlet tube and the casing outlet.

8. The CPAP system according to claim 1 , wherein the outlet tube includes an inlet end and an outlet end, the inlet end defining an internal diameter that is smaller or narrower than an internal diameter defined by the outlet end.

9. The CPAP system according to claim 1 , wherein the outlet tube is bent or arcuate along its length with a radius of curvature that changes along its length.

10. The CPAP system according to claim 1 , wherein the outlet tube includes a curvature that increases along its length with a maximum curvature provided at an outlet end of the outlet tube.

11. The CPAP system according to claim 1 , wherein the patient interface is adapted to support the casing on top of the patient's head.

12. The CPAP system according to claim 1 , wherein the outlet tube is coupled to a casing outlet of the casing, and the casing outlet is angled and/or curved to direct the flow of breathable gas towards the patient interface in use.

13. The CPAP system according to claim 1 , wherein the outlet tube is spaced apart from the wall structure of the casing.

14. The CPAP system according to claim 1 , wherein the outlet tube includes an outlet end arranged within the casing interior of the casing.

15. The CPAP system according to claim 1 , wherein the blower and outlet tube thereof include a separate and distinct structure from the casing.

16. The CPAP system according to claim 1 , further comprising a support structure structured to support the blower within the casing and absorb vibrations and/or noise from the blower in use.