Patent ID: 6102669
Filing Date: 2000-08-15
Classification: F04B

Abstract:
A compressor comprising:a suction chamber;a discharge chamber;a crank chamber;a drive shaft having an outer surface, said drive shaft rotated by a vehicle engine;a swash plate rotatable with said drive shaft within said crank chamber, said swash plate and said drive shaft having a tilt angle between them;a center sleeve slidably mounted on said drive shaft, a position of said center sleeve responsive to said tilt angle;a control valve mechanism for controlling said tilt angle by regulating an introduction of a gas from said discharge chamber to said crank chamber; anda relief passage for relieving gas from said crank chamber to said suction chamber, said relief passage comprising:an axial hole in said drive shaft, said axial hole having an opening at one end of said drive shaft and an end within said drive shaft;a vertical hole in said drive shaft, said vertical hole having two openings on said surface of said drive shaft and perpendicular to said axial hole, said vertical hole intersecting said axial hole near the end of said axial hole; anda passage in fluid connection with said suction chamber and said opening of said axial hole;wherein an aperture of said two openings is regulated by the position of said center sleeve.