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US 2019/0093657 A1Published application
Suction side slide valve for a screw compressor
AssigneeIngersoll-Rand Company
InventorsSam Palliathu Joseph, Lova Raju Pothabattula
Life of this patent
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Abstract
The present disclosure is directed to a screw compressor system having a rotor housing with a pair of screw rotors rotatably supported within a compression chamber. A suction side slide valve is in fluid communication with an inlet to the compression chamber. The suction side slide valve is movable between a closed position and a fully open position to define a variable suction side inlet volume for controlling capacity of the compressor.
Claims20
A compressor system comprising:
- a rotor housing;
- a compression chamber positioned within the housing, the compression chamber having a suction side and a discharge side;
- male and female screw rotors rotatably meshed together within the compression chamber, the screw rotors operable for compressing a working fluid;
- an inlet opening connected to the housing upstream of the compression chamber;
- a discharge port connected to the housing downstream of the compression chamber;
- an inlet port defined between the housing and the screw rotors on the suction side of the housing prior to fluid compression;
- and
- a suction side slide valve operably connected to the housing, the slide valve movable between first and second positions defined as fully closed and fully open to vary the size of the inlet port.
5 more elements
A screw compressor comprising:
- a rotor housing having an inlet, an outlet and a compression chamber positioned therebetween, the compression chamber having a suction side and a discharge side;
- a pair of screw rotors rotatably supported within the compression chamber;
- a suction side slide valve in fluid communication with the compressor inlet, the suction side slide valve being movable between a closed position and a fully open position.
A method for controlling a screw rotor comprising:
- directing a working fluid into an inlet of a rotor housing, the rotor housing having a suction side and a discharge side;
- moving a suction side slide valve to a desired position on the suction side of the rotor housing to control a flow capacity of the compressor, the suction side slide valve defining a movable boundary of a suction inlet volume;
- filling the suction inlet volume with the working fluid;
- compressing the working fluid in a compression chamber defined by a pair of meshed screw rotors and the rotor housing;
- and
- discharging compressed working fluid.
3 more elements
Dependencies are inferred from the claim text.