A fan assembly includes a motor-driven impeller for creating an air flow, a casing including an interior passage for receiving the air flow, and a plurality of air outlets for emitting the air flow from the casing. The casing defines and extends about an opening through which air from outside the ca
A fan assembly includes a motor-driven impeller for creating an air flow, a casing including an interior passage for receiving the air flow, and a plurality of air outlets for emitting the air flow from the casing. The casing defines and extends about an opening through which air from outside the casing is drawn by the air flow emitted from the air outlets. The fan assembly also includes at least one heater for heating at least a first portion of the air flow, and means for diverting at least a second portion of the air flow away from said at least one heater. The plurality of outlets includes at least one first air outlet for emitting the relatively hot first portion of the air flow and at least one second air outlet for emitting the relatively cold second portion of the air flow.
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1. A fan assembly comprising a nozzle for creating an air current, the nozzle comprising: an interior passage for receiving an air flow, and for dividing a received air flow into a plurality of air streams; anda plurality of air outlets for emitting the air flow from the nozzle, the nozzle defining
1. A fan assembly comprising a nozzle for creating an air current, the nozzle comprising: an interior passage for receiving an air flow, and for dividing a received air flow into a plurality of air streams; anda plurality of air outlets for emitting the air flow from the nozzle, the nozzle defining an opening through which air from outside the nozzle is drawn by the air flow emitted from the air outlets;wherein the interior passage extends around the opening, and houses a heating arrangement for heating a first portion of each air stream and at least one air diverting surface for diverting a second portion of each air stream away from the heating arrangement;and the plurality of air outlets comprises at least one first air outlet for emitting the first portions of the air streams, and at least one second air outlet for emitting the second portions of the air streams,wherein the heating arrangement comprises a plurality of heater assemblies each for heating a respective first portion of the air flow, andwherein said at least one air diverting surface comprises a plurality of walls located within the interior passage each for diverting a respective second portion of the air flow away from a heater assembly. 2. The fan assembly of claim 1, wherein the nozzle is arranged to emit the first and second portions of each air stream simultaneously. 3. The fan assembly of claim 1, wherein the air outlets are arranged to emit the air flow through the opening. 4. The fan assembly of claim 1, wherein the nozzle comprises a chassis for retaining the heating arrangement within the interior passage, and wherein the chassis comprises said at least one air diverting surface. 5. The fan assembly of claim 1, wherein the interior passage comprises, for each air stream, a first channel for conveying the first portion of the air stream to one of the plurality of air outlets, a second channel for conveying the second portion of the air stream to another one of the plurality of air outlets, and a wall for separating the first channel from the second channel. 6. The fan assembly of claim 5, wherein the wall is integral with at least one air diverting surface. 7. The fan assembly of claim 5, wherein the nozzle comprises an inner annular casing section and an outer annular casing section which define the interior passage and the opening, and wherein the wall is located between the casing sections. 8. The fan assembly of claim 7, wherein the wall is connected to one of the casing sections. 9. The fan assembly of claim 7, wherein each first air outlet is located between an internal surface of the outer casing section and an inner wall. 10. The fan assembly of claim 7, wherein each second air outlet is located between an external surface of the inner casing section and an inner wall. 11. The fan assembly of claim 7, wherein the second channel is arranged to convey the second portion of the air stream along an internal surface of one of the casing sections. 12. The fan assembly of claim 7, wherein the wall comprises a plurality of spacers for engaging at least one of the inner casing section and the outer casing section. 13. The fan assembly of claim 5, wherein each of the first channel and the second channel is shaped so as substantially to reverse the flow direction of a respective portion of the air stream. 14. The fan assembly of claim 1, wherein said at least one first air outlet is located adjacent said at least one second air outlet. 15. The fan assembly of claim 14, wherein said at least one first air outlet is located alongside said at least one second air outlet. 16. The fan assembly of claim 1, wherein the heater assemblies are located on opposite sides of the opening. 17. The fan assembly of claim 1, wherein said at least one first air outlet comprises a plurality of first air outlets located on opposite sides of the opening. 18. The fan assembly of claim 1, wherein said at least one second air outlet comprises a plurality of second air outlets located on opposite sides of the opening. 19. The fan assembly of claim 1, wherein each air outlet is in the form of a slot. 20. The fan assembly of claim 19, wherein each air outlet has a width in the range from 0.5 to 5 mm. 21. The fan assembly of claim 1, wherein the heating arrangement comprises at least one ceramic heater. 22. The fan assembly of claim 5, wherein the interior passage houses at least one air diverting surface for diverting a third portion of each air stream away from the heating arrangement, and comprises, for each air stream, a third channel for conveying the third portion of the air stream along an internal surface of one of the casing sections. 23. The fan assembly of claim 22, wherein the interior passage is shaped to re-combine the first portion and the third portion of the air stream upstream from said at least one first air outlet. 24. The fan assembly of claim 1, comprising a base housing a system for creating the air flow, and wherein the nozzle is connected to the base. 25. A fan assembly comprising a nozzle for creating an air current, the nozzle comprising: an interior passage for receiving an air flow, and for dividing a received air flow into a plurality of air streams; anda plurality of air outlets for emitting the air flow from the nozzle, the nozzle defining an opening through which air from outside the nozzle is drawn by the air flow emitted from the air outlets;wherein the interior passage extends around the opening, and houses a heating arrangement for heating a first portion of each air stream and at least one air diverting surface for diverting a second portion of each air stream away from the heating arrangement;and the plurality of air outlets comprises at least one first air outlet for emitting the first portions of the air streams, and at least one second air outlet for emitting the second portions of the air streams,wherein the interior passage comprises, for each air stream, a first channel for conveying the first portion of the air stream to one of the plurality of air outlets, a second channel for conveying the second portion of the air stream to another one of the plurality of air outlets, and a wall for separating the first channel from the second channel, andwherein each of the first channel and the second channel is shaped so as substantially to reverse the flow direction of a respective portion of the air stream. 26. The fan assembly of claim 25, wherein the nozzle is arranged to emit the first and second portions of each air stream simultaneously. 27. The fan assembly of claim 25, wherein the air outlets are arranged to emit the air flow through the opening. 28. The fan assembly of claim 25, wherein the wall is integral with at least one air diverting surface. 29. The fan assembly of claim 25, wherein the nozzle comprises an inner annular casing section and an outer annular casing section which define the interior passage and the opening, and wherein the wall is located between the casing sections. 30. The fan assembly of claim 29, wherein the wall is connected to one of the casing sections. 31. The fan assembly of claim 29, wherein each first air outlet is located between an internal surface of the outer casing section and an inner wall. 32. The fan assembly of claim 29, wherein each second air outlet is located between an external surface of the inner casing section and an inner wall. 33. The fan assembly of claim 29, wherein the second channel is arranged to convey the second portion of the air stream along an internal surface of one of the casing sections. 34. The fan assembly of claim 29, wherein the wall comprises a plurality of spacers for engaging at least one of the inner casing section and the outer casing section. 35. The fan assembly of claim 25, wherein said at least one first air outlet is located adjacent said at least one second air outlet. 36. The fan assembly of claim 35, wherein said at least one first air outlet is located alongside said at least one second air outlet. 37. The fan assembly of claim 25, wherein said at least one first air outlet comprises a plurality of first air outlets located on opposite sides of the opening. 38. The fan assembly of claim 25, wherein said at least one second air outlet comprises a plurality of second air outlets located on opposite sides of the opening. 39. The fan assembly of claim 25, wherein each air outlet is in the form of a slot. 40. A fan assembly comprising a nozzle for creating an air current, the nozzle comprising: an interior passage for receiving an air flow, and for dividing a received air flow into a plurality of air streams; anda plurality of air outlets for emitting the air flow from the nozzle, the nozzle defining an opening through which air from outside the nozzle is drawn by the air flow emitted from the air outlets;wherein the interior passage extends around the opening, and houses a heating arrangement for heating a first portion of each air stream, at least one first air diverting surface for diverting a second portion of each air stream away from the heating arrangement and at least one second air diverting surface for diverting a third portion of each air stream away from the heating arrangement;and the plurality of air outlets comprises at least one first air outlet for emitting the first portions of the air streams, and at least one second air outlet for emitting the second portions of the air streams,wherein the interior passage comprises, for each air stream, a first channel for conveying the first portion of the air stream to one of the plurality of air outlets, a second channel for conveying the second portion of the air stream to another one of the plurality of air outlets, a wall for separating the first channel from the second channel, and a third channel for conveying the third portion of the air stream along an internal surface of one of the casing sections. 41. The fan assembly of claim 40, wherein the interior passage is shaped to re-combine the first portion and the third portion of the air stream upstream from said at least one first air outlet. 42. The fan assembly of claim 40, wherein the nozzle is arranged to emit the first and second portions of each air stream simultaneously. 43. The fan assembly of claim 40, wherein the air outlets are arranged to emit the air flow through the opening. 44. The fan assembly of claim 40, wherein the wall is integral with at least one air diverting surface. 45. The fan assembly of claim 40, wherein the nozzle comprises an inner annular casing section and an outer annular casing section which define the interior passage and the opening, and wherein the wall is located between the casing sections. 46. The fan assembly of claim 45, wherein the wall is connected to one of the casing sections. 47. The fan assembly of claim 45, wherein each first air outlet is located between an internal surface of the outer casing section and an inner wall. 48. The fan assembly of claim 45, wherein each second air outlet is located between an external surface of the inner casing section and an inner wall. 49. The fan assembly of claim 45, wherein the second channel is arranged to convey the second portion of the air stream along an internal surface of one of the casing sections. 50. The fan assembly of claim 45, wherein the wall comprises a plurality of spacers for engaging at least one of the inner casing section and the outer casing section. 51. The fan assembly of claim 40, wherein said at least one first air outlet is located adjacent said at least one second air outlet. 52. The fan assembly of claim 51, wherein said at least one first air outlet is located alongside said at least one second air outlet. 53. The fan assembly of claim 40, wherein said at least one first air outlet comprises a plurality of first air outlets located on opposite sides of the opening. 54. The fan assembly of claim 40, wherein said at least one second air outlet comprises a plurality of second air outlets located on opposite sides of the opening. 55. The fan assembly of claim 40, wherein each air outlet is in the form of a slot.
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