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US 8,418,495 B2Granted
Air cycle machine integrated rotor and shaft
AssigneeHamilton Sundstrand Corporation
InventorsBrent J. Merritt, Craig M. Beers
Life of this patent
Estimating the term…
Abstract
An air cycle machine includes two turbines and a compressor mounted on an integral shaft. The integral shaft includes a plurality of shaft sections that are welded together and machined in a single set-up process into a desired shaft shape to provide highly aligned bearing surfaces. The shaft includes three stops that cooperate with three fasteners to secure the two turbines and the compressor on the shaft.
Claims21
An air cycle machine (ACM) comprising:
- a shaft including a first shaft section having a first shaft section diameter, wherein the first shaft section comprises a first stop segment having a first axially facing surface, the first stop segment being connected to a second shaft section having a second shaft section diameter that is larger than the first shaft section diameter;
- and
- a first turbine mounted on said first shaft section adjacent said first axially facing surface.
An air cycle machine (ACM) comprising:
- a shaft formed from a plurality of shaft sections including at least a first shaft section having a first shaft section diameter and a second shaft section having a second shaft section diameter that is greater than said first shaft section diameter, wherein said plurality of shaft sections are connected by at least one welded joint;
- a first turbine mounted on said shaft;
- a second turbine mounted on said shaft;
- and
- a compressor mounted on said shaft between said first turbine and said second turbine.
2 more elements
Dependencies are inferred from the claim text.