Fan assembly of built-in generator

Abstract

The invention belongs to the structural design scheme of aero-engines and relates to a fan assembly of a built-in generator. The fan assembly is composed of a fan rotor, a coupling shaft, an air inletsupport plate, an air inlet cone, a motor and a bearing, wherein the fan rotor is a self component of the generator and rotates at a high speed; the front end of the fan rotor is connected with the coupling shaft; a motor rotor is mounted on the coupling shaft; the fan rotor drives the motor rotor to rotate through the coupling shaft; the air inlet support plate is mounted on a fan casing; the fan casing is connected with a bearing casing; the fan casing and the bearing casing are self force transmitting components of the generator; the air inlet cone is mounted on the air inlet support plateand is static; a sealing structure is arranged at the connecting position of the air inlet cone and the rotor; and a motor stator a bearing for supporting the motor rotor are fixedly mounted on the air inlet cone. The fan assembly can improve the power supply capacity of the generator and reduces the weight of the generator; and the built-in motor is convenient to mount and easy to maintain.

Description

technical field [0001] The invention relates to an aeroengine fan assembly, in particular to a fan assembly with a built-in generator. Background technique [0002] With the increase of power-consuming accessories such as aircraft onboard radars, sensors, weapons, etc., the aircraft requires more and more power for the power supply of the engine. The power obtained by the output power of the "aircraft accessory case-generator" route is not enough to meet the power demand of the aircraft. In order to further increase the power supply capacity of the engine and meet the operational needs of the aircraft, a scheme of building a generator in the fan of the aeroengine for power extraction is proposed. [0003] Although the mechanical transmission power output method used on the high-voltage rotor is mature and widely used, it requires a complex and heavy transmission device. If the low-voltage rotor adopts the mechanical transmission method to output power, the weight burden on ...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of low output power efficiency and large additional weight of the existing mechanical transmission methods, and propose a fan assembly with a built-in generator, which extracts power from the low-pressure rotor and realizes the growth of the power supply capacity of the engine

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