Fan assembly
First Claim
Patent Images
1. An annular nozzle for a fan assembly, the nozzle comprising:
- an outer wall and an inner wall surrounded by the outer wall, the inner wall defining a bore having a bore axis and having a cross-sectional profile in a plane containing the bore axis which is in a shape of part of a surface of an airfoil, wherein the airfoil has a leading edge, a trailing edge, and a chord line extending between the leading edge and the trailing edge, wherein the chord line extends in a direction from the leading edge to the trailing edge towards the bore axis;
an air outlet located at or towards the trailing edge of the airfoil for emitting an air flow; and
an interior passage located between the inner and outer walls, and extending about the bore axis for receiving the air flow, wherein the interior passage comprises an air channel that extends towards the air outlet in a direction extending away from the chord line such that the air flow emitted from the air outlet is in the direction extending away from the chord line and the bore axis, the extending direction of the chord line, and the extending direction of the air channel are nonparallel.
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Abstract
A fan assembly includes an annular nozzle and a system for creating a primary air flow. The nozzle includes an outer wall and an inner wall surrounded by the outer wall, the inner wall defining a bore having a bore axis. The nozzle also includes an interior passage located between the inner and outer walls, and extending about the bore axis for receiving an air flow, and an air outlet located at or towards the front of the nozzle for emitting the air flow. The nozzle is configured to emit the air flow through the air outlet in a direction extending away from the bore axis.
229 Citations
19 Claims
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1. An annular nozzle for a fan assembly, the nozzle comprising:
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an outer wall and an inner wall surrounded by the outer wall, the inner wall defining a bore having a bore axis and having a cross-sectional profile in a plane containing the bore axis which is in a shape of part of a surface of an airfoil, wherein the airfoil has a leading edge, a trailing edge, and a chord line extending between the leading edge and the trailing edge, wherein the chord line extends in a direction from the leading edge to the trailing edge towards the bore axis; an air outlet located at or towards the trailing edge of the airfoil for emitting an air flow; and an interior passage located between the inner and outer walls, and extending about the bore axis for receiving the air flow, wherein the interior passage comprises an air channel that extends towards the air outlet in a direction extending away from the chord line such that the air flow emitted from the air outlet is in the direction extending away from the chord line and the bore axis, the extending direction of the chord line, and the extending direction of the air channel are nonparallel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A fan assembly comprising a system for creating a primary air flow and an annular nozzle comprising:
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an outer wall and an inner wall surrounded by the outer wall, the inner wall defining a bore having a bore axis and having a cross-sectional profile in a plane containing the bore axis which is in a shape of part of a surface of an airfoil, wherein the airfoil has a leading edge, a trailing edge, and a chord line extending between the leading edge and the trailing edge, wherein the chord line extends in a direction from the leading edge to the trailing edge towards the bore axis; an air outlet located at or towards the trailing edge of the airfoil for emitting the air flow; and an interior passage located between the inner and outer walls, and extending about the bore axis for receiving the air flow, wherein the interior passage comprises an air channel that extends towards the air outlet in a direction extending away from the chord line such that the air flow emitted from the air outlet is in the direction extending away from the chord line and the bore axis, the extending direction of the chord line, and the extending direction of the air channel are nonparallel.
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Specification