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Bearing housing with flexible joint

a flexible joint and bearing housing technology, applied in the direction of bearing unit rigid support, machines/engines, mechanical equipment, etc., can solve problems affecting their performan

Active Publication Date: 2020-10-01
PRATT & WHITNEY CANADA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a gas turbine engine with a bearing assembly that can adjust its position to compensate for different loads. This allows the bearings to move relative to each other, which improves the engine's performance and reduces its maintenance costs. The technical effect of this innovation is a more efficient and reliable gas turbine engine.

Problems solved by technology

Due to the forces inherent to gas turbine engine operation, and as they are the interface between shafts and a support structure, the bearings are exposed lo loads, vibrations, etc that may affect their performance over time.

Method used

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  • Bearing housing with flexible joint
  • Bearing housing with flexible joint
  • Bearing housing with flexible joint

Examples

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Embodiment Construction

[0012]FIG. 1 illustrates a gas turbine engine 10 of a type preferably provided for use in subsonic flight, generally comprising in serial flow communication a fan 12 through which ambient air is propelled, a compressor section 14 for pressurizing the air, a combustor 16 in which the compressed air is mixed with fuel and ignited for generating an annular stream of hot combustion gases, and a turbine section 18 for extracting energy from the combustion gases. The fan 12, the compressor section 14, and the turbine section 18 are rotatable about a central axis 11.

[0013]The compressor section 14, fan 12 and turbine section 18 have rotating components which can be mounted on one or more shafts 20, 22, which, in this embodiment, rotate concentrically around the central axis 11. Bearings 24 are used to provide smooth relative rotation between a shaft (20 or 22) and casings 26, 28 (FIG. 2) (non-rotating component), and / or between the two shafts 20, 22 which rotate at different speeds.

[0014]R...

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Abstract

There is disclosed a gas turbine engine including a bearing housing having at least two bearings axially spaced from one another relative to a central axis. The bearing housing has a case between the at least two bearings having a joint configured for relative axial movement between the bearing supports. A method of operating a bearing assembly including the bearing housing is also disclosed.

Description

TECHNICAL FIELD[0001]The application relates generally to gas turbine engines and, more particularly, to bearing housing assemblies used in such engines.BACKGROUND OF THE ART[0002]In a gas turbine engine, a rotary shaft holding compressor / fan and turbine blades is rotatably mounted within a casing via bearings. The bearings are typically located radially inwards relative to the annular flow path formed by duct walls of the casing. A bearing housing usually encloses the bearings and defines a bearing cavity for receiving lubricant for lubricating the bearings. Due to the forces inherent to gas turbine engine operation, and as they are the interface between shafts and a support structure, the bearings are exposed lo loads, vibrations, etc that may affect their performance over time.SUMMARY[0003]In one aspect, there is provided a gas turbine engine comprising a bearing housing having at least two bearings axially spaced from one another relative to a central axis, the bearing housing h...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F01D25/16
CPCF05D2220/32F05D2240/54F16C2360/23F05D2240/91F16C19/16F05D2260/15F01D25/164F01D5/027F02C7/06F05D2230/642F05D2260/609F05D2260/98F16C19/54F16C27/04F16C33/6659F16C33/6685F16C35/042F16C2240/30
Inventor LEFEBVRE, GUYSYNNOTT, REMY
Owner PRATT & WHITNEY CANADA CORP