Screw compressor including a single screw rotor with first and second screw groove being bilaterally symmetric
AssigneeDaikin Industries, Ltd.
InventorsMohammod Anwar Hossain, Masanori Masuda, Kaname Ohtsuka
Life of this patent
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Abstract
A screw compressor includes a rotatable screw rotor and a plurality of gate rotors. The screw rotor has helical grooves formed in an outer circumferential surface of the screw rotor. The gate rotors have a plurality of radially disposed teeth meshing with the grooves of the screw rotor. The helical grooves include a first screw groove and a second screw groove. The first screw groove compresses a fluid from one end side of the screw rotor to an other end side of the screw rotor. The second screw groove compresses the fluid from the other end side of the screw rotor to the one end side of the screw rotor.
Claims11
A screw compressor, comprising:
- a single rotatable screw rotor having helical grooves formed in an outer circumferential surface of the single rotatable screw rotor;
- a plurality of gate rotors, each of the plurality of gate rotors having a plurality of teeth that are radially disposed in relation to a gate rotor rotation axis of the gate rotor and mesh with the helical grooves of the single rotatable screw rotor;
- and
- an intermediate bearing disposed axially between a first screw groove and a second screw groove along the screw rotor rotation axis,
- the helical grooves including
- the first screw groove configured and arranged to compress a fluid from one end of the single rotatable screw rotor towards an other end of the single rotatable screw rotor, and
- the second screw groove configured and arranged to compress the fluid from the other end of the single rotatable screw rotor towards the one end of the single rotatable screw rotor,
- the first screw groove and the second screw groove being arrayed along a rotational axis direction of the single rotatable screw rotor and being bilaterally symmetric relative to the intermediate bearing.
A screw compressor comprising:
- a single rotatable screw rotor having helical grooves formed in an outer circumferential surface of the single rotatable screw rotor;
- a plurality of gate rotors each of the plurality of gate rotors having a plurality of teeth that are radially disposed in relation to a gate rotor rotation axis of the gate rotor and mesh with the helical grooves of the single rotatable screw rotor;
- and
- a minor portion, in which the helical grooves are not formed, disposed axially between a first screw groove and a second screw groove along the screw rotor rotation axis, the helical grooves including
- the first screw groove configured and arranged to compress a fluid from one end of the single rotatable screw rotor towards an other end of the single rotatable screw rotor, and
- the second screw groove configured and arranged to compress the fluid from the other end of the single rotatable screw rotor towards the one end of the single rotatable screw rotor,
- the first screw groove and the second screw groove being arrayed along a rotational axis direction of the single rotatable screw rotor and being bilaterally symmetric relative to the minor portion.
Dependencies are inferred from the claim text.