| 摘要 |
<p>A compressor (101) for a refrigeration unit having a stator (106), a rotor (133) orbiting in engagement with the stator (106) to cyclically open, fill with refrigerant gas from at least one inlet port (103), compress and discharge compressed refrigerant gas through at least one discharge port (104), a rotary drive for orbiting the rotor (133), a driven element (120) of a magnetic coupling (121) in driving connection with the rotary drive, a sealed casing (102) for the ports (103, 104) and enclosing all of the foregoing components, a driving element (125) of the magnetic coupling (121) outside of the casing (102) in close proximity to the driven element (120), a motor (124) to rotate the driving element (125), and at least two equalizer shafts (143, 144) inserted into the chamber (136) and biased towards the rotor (133) to overcome any displacement within the chamber (136) and to maintain equal pressure during the revolution of the rotor (133). The rotor may be a three lobed rotor journalled on an eccentric (135) carried by a shaft (118) of the rotary drive and having a ring gear (139) driven by a gear (137) of the rotary drive having the same eccentricity as the eccentric (135) and rotated in synchronism therewith, the gear ratio of the ring gear to the eccentric being three to one.</p> |
