Fluid compressor

Abstract

An apparatus includes an electric motor including a rotor and a stator, and a compression device including a compression chamber and a compression mechanism. The compression chamber is within either the rotor or the stator of the electric motor.

1 . An apparatus comprising:
 an electric motor including a rotor and a stator; and   a compression device including a compression chamber and a compression mechanism, the compression chamber being within either the rotor or the stator of the electric motor.   
     
     
         2 . The apparatus according to  claim 1 , wherein the compression chamber is inside the rotor of the electric motor. 
     
     
         3 . The apparatus according to  claim 1 , wherein the compression chamber is inside the stator of the electric motor. 
     
     
         4 . The apparatus according to  claim 1 , further comprising:
 a seal including an inner race and an outer race.   
     
     
         5 . The apparatus according to  claim 4 , further comprising:
 a seal ring located between the inner race and the outer race and configured to change position when the electric motor is turned on.   
     
     
         6 . The apparatus according to  claim 5 , wherein the seal ring moves from a position in the inner race when the motor is off to a position partially within the outer race when the motor is turned on. 
     
     
         7 . The apparatus according to  claim 4 , further comprising:
 a plurality of metal spheres located between the inner race and the outer race.   
     
     
         8 . The apparatus according to  claim 4 , further comprising:
 a seal ring located in contact with a surface of the inner race and a surface of the outer race.   
     
     
         9 . An apparatus comprising:
 an electric motor including a rotor, a stator, and a shaft, the rotor including a central passage, at least a portion of the shaft being located in the central passage of the rotor;   an upper bearing supporting an upper end of the rotor, the upper bearing extending into an upper portion of the central passage of the rotor; and   a lower bearing supporting a lower end of the rotor, the lower bearing extending into a lower portion of the central passage of the rotor.   
     
     
         10 . An apparatus comprising:
 an electric motor including a rotor and a stator; and   a seal including an upper race, a lower race, and a seal ring, the seal ring located in an annular groove in an outer perimeter of the upper race, the annular groove in the outer perimeter of the upper race being adjacent to an annular groove in an inner perimeter of the lower race such that when the upper race rotates with the rotor, the seal ring moves at least partly into the annular groove in the inner perimeter of the lower race to seal an interface between the upper and lower races.