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US 10,539,137 B2Granted
Active clearance management in screw compressor
AssigneeTrane International Inc.
InventorsJay H. Johnson, Steven Lotspaih
Life of this patent
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Abstract
A compressor includes a housing defining a working chamber. The housing further includes a bore and an endplate disposed toward a discharge end. The compressor further includes a rotor having helical threads, the rotor being configured to be housed in the bore, a rotor clearance, a controllable bearing supporting the rotor, and a controller configured to control the controllable bearing such that the controllable bearing moves the rotor in a manner to reduce and/or enlarge the rotor clearance.
Claims17
A compressor comprising,
- a housing defining a working chamber, the housing including a first bore, and an endplate disposed toward a discharge end,
- a first rotor having helical threads, the first rotor being configured to be housed in the first bore,
- one or more first rotor clearances each defined by an outer dimension of the first rotor in relation to one of one or more static components in the compressor,
- a controllable bearing supporting the first rotor,
- a second bore in the housing;
- a second rotor disposed in the second bore, the second rotor has helical threads intermeshing with the helical threads of the first rotor;
- a rotor-to-rotor clearance is defined between the first rotor and the second rotor;
- and
- a controller to control the controllable bearing such that the controllable bearing moves the first rotor in a manner to reduce or enlarge at least one of the one or more first rotor clearances, and such that the controllable bearing moves the first rotor in a manner to reduce or enlarge the rotor-to-rotor clearance.
6 more elements
Dependencies are inferred from the claim text.