Bearing assembly of aero-engine and aero-engine

Abstract

The invention relates to a bearing assembly of an aero-engine, which is supported between a main shaft and a bearing seat, and comprises: a bearing, having a split type bearing inner ring; an oil collecting ring, attached to one side of the bearing in the axial direction; and a nozzle, spraying right towards the oil collecting ring and used for spraying lubricating oil for lubricating the bearing, wherein the main shaft is provided with a groove body, the groove body is located in a sleeving area of the main shaft and the oil collecting ring, the groove body and the oil collecting ring jointly form a lubricating oil channel, and the lubricating oil channel can receive lubricating oil sprayed from the nozzle and convey the lubricating oil to the split type bearing inner ring. According to the embodiment, efficient radial oil collection and under-ring oil supply of the aero-engine bearing can be achieved, it is ensured that the performance of a bearing oil supply device is stable and efficient at all state points of an engine, especially at large state points with severe conditions, the bearing is well lubricated and cooled, and the light weight of the oil supply device is facilitated to a certain extent.

Description

technical field [0001] The present disclosure relates to the field of gas turbines, in particular to a bearing assembly of an aeroengine and the aeroengine. Background technique [0002] The bearings of advanced aero-engines have high speed, large load, and compact installation space, which makes the lubrication and cooling design for it face a dilemma different from that of ordinary bearings. First, when the DN (speed factor) value of the bearing exceeds a certain range, the ordinary spray lubrication method can no longer meet the requirements of the bearing on the lubrication and cooling effect, the cleanliness of the lubricating oil, and the vibration, etc., and the oil supply method under the ring must be used instead; Second, due to the consideration of engine performance and weight reduction, the installation space of the bearing is continuously compressed, which makes the traditional oil supply design under the ring with an axial oil collection device difficult to imp...

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Problems solved by technology

[0007] In view of this, the embodiment of the present disclosure provides a bearing assembly of an aero-engine, and provides a feasible alternative to the design defects existing in the prior art, solves the problem of low efficiency of the oil supply device, and can ensure Points, especially high-speed, high-load, high-flow large state points, the performance of the bearing oil supply device is stable and efficient, and the bearings are well lubricated and cooled

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