A blower includes a stationary portion including an inlet and an outlet, a rotating portion provided to the stationary portion, and a motor adapted to drive the rotating portion. The inlet and outlet are co-axially aligned. The stationary portion includes a housing, a stator component provided to th
A blower includes a stationary portion including an inlet and an outlet, a rotating portion provided to the stationary portion, and a motor adapted to drive the rotating portion. The inlet and outlet are co-axially aligned. The stationary portion includes a housing, a stator component provided to the housing, and a tube providing an interior surface. The rotating portion includes one or more bearings that are provided along the interior surface of the tube to support a rotor within the tube. In an embodiment, the blower is structured to supply air at positive pressure.
대표청구항▼
1. A blower, comprising: a stationary portion including an inlet, an outlet, a housing, a stator component provided to the housing, and a tube providing an interior surface and an exterior surface, the inlet and outlet being co-axially aligned;a rotating portion including a rotor; anda motor includi
1. A blower, comprising: a stationary portion including an inlet, an outlet, a housing, a stator component provided to the housing, and a tube providing an interior surface and an exterior surface, the inlet and outlet being co-axially aligned;a rotating portion including a rotor; anda motor including at least one magnet and a stator assembly,the rotating portion is provided to the stationary portion and the motor is adapted to drive the rotating portion,the rotor is located within the tube and the at least one magnet is provided to the rotor within the tube, the rotor being supported by one or more bearings that are provided along the interior surface of the tube, andthe stator assembly is provided along the exterior surface of the tube,wherein the stator component includes an annular base including a plurality of stator vanes, the tube structured to extend from the base, and the stationary portion includes a shield that cooperates with the stator component to support and maintain the stator assembly in an operative position, andwherein at least a portion of the stator assembly and a wall of the housing define a portion of a gas flow path to direct gas from a first side of the motor proximal the inlet to a second side of the motor distal the inlet. 2. A blower according to claim 1, wherein the stator component is integrally formed as a one piece structure. 3. A blower according to claim 1, wherein at least a portion of the tube is sufficiently magnetically transparent to allow a magnetic field to pass through it. 4. A blower according to claim 1, wherein the blower is a multi-stage blower. 5. A blower according to claim 4, wherein the rotating portion includes one impeller provided on one side of the motor and one impeller provided on the other side of the motor. 6. A blower according to claim 4, wherein the stationary portion is structured to allow airflow to enter and exit each stage in an axial direction. 7. A blower according to claim 1, wherein the bearings are different sizes. 8. A blower according to claim 7, wherein one end of the tube includes a first surface adapted to support a first bearing and an opposite end of the tube includes a second surface adapted to support a second bearing having a smaller size than the first bearing. 9. A blower according to claim 1, wherein the stator vanes are structured to support and maintain the stator assembly of the motor in an operative position. 10. A blower according to claim 9, wherein an inner portion of the stator vanes is structured to engage and support windings of the stator assembly and an outer portion of the stator vanes is structured to engage and support a stator of the stator assembly. 11. A blower according to claim 10, wherein the inner portion is recessed or reduced in height with respect to the outer portion. 12. A blower according to claim 1, wherein the shield is structured and positioned to isolate the stator vanes from impeller blades of the rotating portion. 13. A blower according to claim 1, wherein the shield includes one or more tabs that are adapted to engage within respective slots provided by the housing and/or stator component. 14. A blower according to claim 1, wherein the shield includes an inlet conduit and outlet conduit to provide a short circuit of pressure around the tube. 15. A blower according to claim 12, wherein the stationary portion includes a second shield that directs airflow towards the outlet. 16. A blower according to claim 15, wherein the second shield includes a plurality of stator vanes that are structured to support and align the second shield at the outlet. 17. A blower according to claim 15, wherein the housing provides a plurality of stator vanes to direct airflow towards the outlet, and the stator vanes are structured to support and align the second shield. 18. A blower according to claim 1, wherein at least a portion of the stator assembly is exposed to the gas flow path which allows cooling of the stator assembly as gas flows through the stationary portion in use. 19. A blower according to claim 1, wherein the rotating portion includes at least one impeller adapted to be driven by the motor. 20. A blower according to claim 19, wherein at least one impeller includes a mixed flow configuration in which impeller blades are bent or sloped downwardly with respect to an axis of an impeller hub. 21. A blower according to claim 20, wherein each of the impeller blades includes an end portion having a longitudinal axis that is bent or sloped downwardly at an angle with respect to the axis of the impeller hub. 22. A blower according to claim 21, wherein the angle is in the range of about 90°-160°. 23. A blower according to claim 20, wherein the stationary portion is tapered to match the mixed flow configuration of the impeller. 24. A blower according to claim 1, wherein the housing includes first and second housing parts. 25. A blower according to claim 24, wherein the housing parts cooperate to define a slot adapted to receive and support an edge of the stator component. 26. A blower according to claim 25, further comprising a sealing arrangement between the first and second housing parts. 27. A blower according to claim 26, wherein the sealing arrangement includes a first seal to provide a seal between end portions of the housing parts and a second seal to provide a seal between the edge of the stator component and the housing parts. 28. A blower according to claim 27, wherein the first and second seals are overmolded to the end portion of one of the housing parts. 29. A blower according to claim 27, wherein the stator component includes a protrusion adapted to engage the second seal. 30. A blower according to claim 24, wherein the housing parts are secured to one another by multiple snap-fit members. 31. A blower according to claim 1, wherein the blower is structured to supply air at positive pressure. 32. A blower according to claim 1, wherein the motor includes a stator having a ring-shaped main body and a plurality of stator teeth extending radially inwardly from the main body on which windings are wound. 33. A blower according to claim 1, wherein the motor includes windings that are wound directly on the tube. 34. A PAP device comprising a blower according to claim 1. 35. A respiratory device for generating a supply of pressurized gas to be provided to a patient for treatment, the device comprising a blower according to claim 1. 36. A blower, comprising: a stationary portion including an inlet and an outlet;a rotating portion provided to the stationary portion; anda motor adapted to drive the rotating portion,the stationary portion including a housing and a stator component provided to the housing,wherein the stator component includes a tube adapted to support a rotor of the rotating portion and a cage that surrounds the tube,wherein the motor includes a stator assembly that is provided along an exterior surface of the tube,wherein the cage includes an annular shield portion, an annular base portion, and a plurality of spaced apart side walls extending between the annular shield portion and the annular base portion, each side wall including an interior surface structured to engage the stator assembly and an exterior surface, the exterior surface of each side wall and a wall of the housing defining a portion of a gas flow path to direct gas from a first side of the motor proximal the inlet to a second side of the motor distal the inlet. 37. A blower according to claim 36, wherein the cage is structured to support and maintain the stator assembly in an operative position. 38. A blower according to claim 37, wherein the spaced apart side walls define openings into the cage. 39. A blower according to claim 38, wherein at least a portion of the stator assembly is exposed to the gas flow path which allows cooling of the stator assembly as gas flows through the stationary portion in use. 40. A blower according to claim 36, wherein the base portion is structured to support the stator component within the housing. 41. A blower according to claim 36, wherein the shield portion is structured to direct gas in use. 42. A blower according to claim 36, wherein the tube and the cage are structured to extend from the shield portion. 43. A blower according to claim 36, wherein the stator component is integrally formed as a one-piece structure. 44. A blower according to claim 36, wherein the rotating portion includes one or more bearings that are provided along an interior surface of the tube to support the rotor within the tube. 45. A blower according to claim 36, wherein the inlet and outlet are co-axially aligned. 46. A blower according to claim 36, wherein the cage is cylindrical. 47. A blower according to claim 36, wherein the blower is structured to supply air at positive pressure. 48. A blower according to claim 36, wherein the blower is a multi-stage blower. 49. A blower according to claim 48, wherein the rotating portion includes one impeller provided on one side of the motor and one impeller provided on the other side of the motor. 50. A blower according to claim 36, wherein the motor includes a stator having a ring-shaped main body and a plurality of stator teeth extending radially inwardly from the main body on which windings are wound. 51. A blower according to claim 36, wherein the motor includes windings that are wound directly on the tube. 52. A PAP device comprising a blower according to claim 36. 53. A respiratory device for generating a supply of pressurized gas to be provided to a patient for treatment, the device comprising a blower according to claim 36.
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