Helical compressor with internal bearings

A compressor comprising:

• a male rotor assembly which comprises:
• an axially adjustable elongate male helical-shaped rotor having a first axial cylindrical cavity therethrough;
• an axially adjustable first stationary shaft axially aligned with the male helical-shaped rotor and through the first axial cylindrical cavity;
• and
• a first bearing assembly rotationally connecting the first axial cylindrical cavity and male rotor, the first bearing assembly comprising first radial bearings and first axial thrust bearings with the first radial bearings mounted inside the first axial cylindrical cavity at each end thereof and with the first axial thrust and/or bearings mounted in a middle portion of the first axial cylindrical cavity;
• a housing for housing the male helical-shaped rotor and the housing also rotationally fixes the first stationary shaft within a first housing cavity of the housing;
• a female rotor assembly which comprises:
• an axially adjustable elongate female helical-shaped rotor having a second axial cylindrical cavity therethrough, which is in register with the male helical-shaped rotor;
• an axially adjustable second stationary shaft axially aligned with the female helical-shaped rotor and through the second axial cylindrical cavity;
• and
• a second bearing assembly rotationally connecting the second axial cylindrical cavity and female rotor, the second bearing assembly comprising second radial bearings and second axial thrust bearings with the second radial bearings mounted inside the second axial cylindrical cavity at each end thereof and with the second axial thrust and/or radial bearings mounted in a middle portion of the second axial cylindrical cavity;
• wherein the housing also houses the female helical-shaped rotor and the housing also rotationally fixes the second stationary shaft in a second housing cavity within the housing;
• wherein the housing defines an aperture at an end for allowing at least a portion of an end of either the male helical-shaped rotor or the female helical-shaped rotor and its associated shaft to protrude there through, such that a driving means can be mounted on the end of the male helical-shaped rotor or the female helical-shaped rotor or be received by the driving means;
• wherein the driving means is coupled to either the male helical-shaped rotor or the female helical-shaped rotor;
• and
• wherein the male helical shaped rotor and the female helically shaped rotor define working cavities therebetween which capture, drive and compress a fluid substance forward when the male helical-shaped rotor and the female helical-shaped rotor are driven.