ROTARY SCREW COMPRESSOR
First Claim
1. An apparatus comprising:
- a screw compressor rotor having an exterior compression surface defined by a helical shape, the helical shape axially extending from a first end to a second end and having a helical grooved valley situated between opposing helical valley walls, the screw compressor rotor having a cooling fluid inlet disposed in the first end to receive a cooling fluid and a plurality of separate cooling passages disposed internal to the screw compressor rotor, the plurality of separate cooling passages in fluid communication with the cooling fluid inlet such that the cooling fluid inlet feeds cooling fluid to the plurality of separate cooling passages, the plurality of cooling passages having cross sectional areas that increase along a direction from an upstream end to a downstream end of the plurality of cooling passages.
3 Assignments
0 Petitions
Accused Products
Abstract
A gas compressor is disclosed that includes a first rotor having a first rotor body, the first rotor body including a plurality of helical lobes, an infernal volume within the first rotor body defined by a wall, and a turbine disposed within the internal volume, the turbine including a turbine body and a plurality of airfoils extending substantially radially from the turbine body to the wall, where the internal volume is structured to enable a cooling fluid to flow therethrough. The gas compressor further includes a second rotor body including a plurality of helical flutes, an inlet manifold and an outlet manifold, both disposed within the second rotor body, and a body channel within at least one flute extending from and in fluid communication with the inlet manifold to the outlet manifold, where the body channel is structured to enable a cooling fluid to flow therethrough.
17 Citations
20 Claims
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1. An apparatus comprising:
a screw compressor rotor having an exterior compression surface defined by a helical shape, the helical shape axially extending from a first end to a second end and having a helical grooved valley situated between opposing helical valley walls, the screw compressor rotor having a cooling fluid inlet disposed in the first end to receive a cooling fluid and a plurality of separate cooling passages disposed internal to the screw compressor rotor, the plurality of separate cooling passages in fluid communication with the cooling fluid inlet such that the cooling fluid inlet feeds cooling fluid to the plurality of separate cooling passages, the plurality of cooling passages having cross sectional areas that increase along a direction from an upstream end to a downstream end of the plurality of cooling passages. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus comprising:
a compressor rotor having an external helical compression surface structured for engagement with a complementary shaped compressor rotor to form a rotary screw compressor, the external helical compression surface including a helical valley formed between adjacent helical walls, the compressor rotor having an inlet aperture into which passes a cooling fluid for passage to an interior of the compressor rotor an outlet aperture from which passes the cooling fluid, and an open interior volume located between the inlet aperture and outlet aperture and into which is disposed a plurality of turbine blades having an airfoil shape oriented to extract work from the cooling fluid traversing through the open interior volume. - View Dependent Claims (9, 10, 11, 12)
- 13. The apparatus of chum 8, wherein the turbine is one of an impulse turbine and a reactive turbine.
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16. An apparatus comprising:
a screw compressor including a first compressor rotor structured to rotate about a first axis and having a first compression surface, a second compressor rotor structured to rotate about a second axis and having a second compression surface, the first and second compressor rotors configured for complementary engagement via first and second compression surfaces and operable to produce a pressure rise in a compressible gas when the first compressor rotor and second compressor rotor are rotated about the first axis and second axis, respectively, the first compressor rotor having an internal cooling circuit structured to flow a first compressor rotor cooling fluid and thereby absorb heat generated during compression of the compressible gas, the second compressor rotor including a turbine disposed radially inward of the second compression surface and structured to extract work from a second compressor rotor cooling fluid passing internal to the second compressor rotor. - View Dependent Claims (17, 18, 19, 20)
Specification