High performance dual chamber rotary vane compressor

A high performance rotary vane compressor, comprising:

• a) a housing having two opposed chambers, each of said chambers being defined by an outer contour, each of said chambers having an inlet port and a discharge port;
• b) a rotor rotatably disposed within said housing between said chambers, said rotor carrying at least four vanes, each vane having a tip and being reciprocably received within a slot formed in said rotor, whereby, rotation of said rotor causes said vanes to extend outwardly so that said vane tips engage said outer contours of said chambers;
• c) each outer contour being defined by a mathematical formula including a sine function, said formula being used to define a contour radius of a said outer contour at each angular location therealong, said contour radius being limited to, at maximum, a major radius of an ellipse to restrict bending loads and deflections of said vanes, each said outer contour, in a direction of rotation of said rotor, rapidly increasing in radius from adjacent an inlet port thereof to an elliptical major radius to thereby increase displacement of each chamber over elliptical shape displacement;
• d) said mathematical formula being as follows:
• Rm=Re+a* (Re-Rr) (sin2.theta.).sup.n
• where
• Rm=Radius as modified
• Re=elliptical radius
• a=+1 for an upper half of said housing and -1 for a lower half of said housing
• Rr=rotor radius
• n=an experimentally derived exponent
• .theta.=the particular angular displacement.