Patent ID: 6676385
Filing Date: 2004-01-13
Classification: F01C,F02B,F02G,F04C

Abstract:
A rotary positive displacement compressor assembly comprising a housing having a curved inner surface with a profile equidistant from a trochoidal curve, an eccentric mounted on a shaft disposed within said housing, a rotor mounted said eccentric shaft which comprised of a bore with an axial centerline, a front face, aback face, a first side, a second side, and a third side, a first partial bore disposed at the intersection of the first side and the second side, a second partial bore disposed at the intersection of said second side and said third side, a third partial bore disposed at the intersection of said third side and said first side, a first roller disposed and rotatably mounted within said first partial bore, and a third roller disposed and rotatably mounted within said third partial bore, wherein:(a) a first opening is formed between and communicates between said front face and said first side, a second opening is formed between and communicates between said back face and said first side, a third opening is formed between and communicates between said front face and said second side, a fourth opening is formed between and communicates between said back face and said second side, fifth opening is formed between and communicates between said front face and said third side, and a sixth opening is formed between and communicates between said back face and said third side; and (b) a first transverse rotor centerline extends through said first side, a second transverse rotor centerline extends through said second side, and a third transverse rotor centerline extends through said third side, provided that each of said first transverse rotor centerline, said second transverse rotor centerline, and said third transverse rotor centerline also extends through said axial centerline said rotor; and (c) said first opening is comprised of a first opening centerline, said second opening is comprised of a second opening centerline, provided that the first opening centerline and said second opening centerline are each offset from said first transverse rotor centerline by at least 0.1 inches and from about 0.x to about 4.x, wherein x is equal to the width of said first opening and said second opening, respectively; and (d) said third opening is comprised of a third opening centerline, said fourth opening is comprised of a fourth opening centerline, provided that said third opening centerline and said fourth opening centerline are each offset from said third transverse rotor centerline by at least 0.1 inches and from about 0.x to about 4.x, wherein x is equal to the width of said third opening and said fourth opening, respectively; and (e) said fifth opening is comprised of a fifth opening centerline, said sixth opening is comprised of a sixth opening centerline, provided that said fifth opening centerline and said sixth opening centerline are each offset from said third transverse rotor centerline by at least 0.1 inches and from about 0.x to about 4.x, wherein x is equal to the width of said fifth opening and said sixth opening, respectively; and wherein a degree to which said first opening centerline, said third opening centerline, and said fifth opening centerline are offset from said rotor transverse centerlines are the same; and wherein a degree to which said second opening centerline, said fourth opening centerline, and said sixth opening centerline are offset respectively, from said first rotor transverse centerline, said second rotor transverse centerline, and said third rotor transverse centerline, are the same.