Through vane type rotary compressor with specific chamber configuration

A through vane type rotary compressor comprising:

• housing means for enclosing said compressor,
• said housing including means defining a hollow interior chamber together with suction and discharge ports on opposite sides of said interior chamber,
• rotor means rotatably mounted within said interior chamber, said rotor means including an eccentrically mounted rotor, said rotor being in contact with said housing at one predetermined spot, said rotor means including at least one vane having a predetermined length, said rotor including means defining at least one slit extending therethrough and arranged to pass through the center of said rotor, said at least one vane being slidably engaged within said at least one slit so that both ends thereof remain in contact with the interior surface of said chamber, wherein the volume between the rotor and the interior surface of said chamber is changed with rotation of the rotor, and wherein the configuration of the inner surface of said chamber is defined by a curve such that the relative acceleration R of said at least one vane to said rotor is expressed by the following formula:
• R=C1.omega..sup.2 (cos .theta.-cos 3.theta.)
• wherein C1 stands for a constant, .omega. represents the angular velocity and .theta. represents the rotation angle so that a minimum increasing clearance from said contact spot exists between said rotor and said housing along an arc extending for about 28.degree. in the region adjacent the point where the angle of rotation .theta. equals zero.