초록 ▼

A high-pressure vane-axial fan assembly is provided. A rotor assembly has a plurality of rotor blades disposed circumferentially around and extending radially outward from a hub. Each rotor blade has an airfoil cross-section and is constructed to define a straight-ruled leading edge that extends out

A high-pressure vane-axial fan assembly is provided. A rotor assembly has a plurality of rotor blades disposed circumferentially around and extending radially outward from a hub. Each rotor blade has an airfoil cross-section and is constructed to define a straight-ruled leading edge that extends outward from the hub. The rotor blade is rotated along its span relative to the straight-ruled leading edge. The plurality of rotor blades defines a solidity of greater than 1. A stator assembly has a plurality of stator vanes disposed circumferentially around and extending radially from the frame. There are a lesser number of stator vanes than rotor blades. The stator assembly is positioned adjacent the rotor assembly such that an axial gap is defined between the trailing edge of the rotor blades and the leading edge of the stator vanes. The axial gap increases with radial distance from the hub as defined by the shape of the trailing edge of the rotor blades and the shape of the leading edge of the stator vanes. The axial gap is a minimum of the rotor blade's axial chord length along a central portion thereof.

대표청구항 ▼

1. A fan assembly comprising:a hub having an axis of rotation; a plurality of rotor blades disposed circumferentially around and extending radially outward from said hub, each of said plurality of rotor blades having a straight-ruled leading edge that extends outward from said hub with unequal angul

1. A fan assembly comprising:a hub having an axis of rotation; a plurality of rotor blades disposed circumferentially around and extending radially outward from said hub, each of said plurality of rotor blades having a straight-ruled leading edge that extends outward from said hub with unequal angular spacing between said leading edge of adjacent ones of said plurality of rotor blades, each of said plurality of rotor blades having a trailing edge that extends from said hub at a skew angle measured in a radial plane of said hub with respect to a first line extending radially outward from said axis of rotation, each of said plurality of rotor blades having an axial chord length defined across a central portion thereof and parallel to said axis of rotation, said plurality of rotor blades further defining a solidity of greater than 1; a frame; a plurality of stator vanes disposed circumferentially around and extending radially from said frame, said plurality of stator vanes being lesser in number than said plurality of rotor blades, each of said plurality of stator vanes having a leading edge that extends from said frame at: i) an inclined angle measured in said radial plane with respect to a second line extending radially outward from said axis of rotation, and ii) a lean angle measured in an axial plane of said frame with respect to a third line extending radially outward from said axis of rotation; and said frame with said plurality of stator vanes being positioned adjacent said hub with said plurality of rotor blades to define an axial gap between said trailing edge of each of said plurality of rotor blades and said leading edge of each of said plurality of stator vanes, said axial gap increasing with radial distance from said hub as defined by said skew angle and said inclined angle, said axial gap being a minimum of said axial chord length.