Patent ID: 6042351
Filing Date: 2000-03-28
Classification: F04C

Abstract:
A high side rotary compressor comprising:a shell having a first end and a second end;a cylinder having a bore containing pump structure including a vane and a piston coacting with said cylinder to define suction and compression chambers;said cylinder being fixedly located in said shell near said first end;a first bearing underlying said bore and secured to said cylinder and extending towards said first end;a second bearing secured to said cylinder, overlying said bore and extending towards said second end;a motor including a rotor and a stator;said stator being fixedly located in said shell between said cylinder and said second end and axially spaced from said cylinder and said second bearing;an eccentric shaft supported by said first and second bearings and including an eccentric operatively connected to said piston;said rotor secured to said shaft so as to be integral therewith and located within said stator so as to define therewith an annular gap;means for supplying gas to said pump structure;a discharge fluidly connected to said shell;a discharge port located in said second bearing;a recess located in said cylinder and communicating with said discharge port;a valve overlying said discharge port;said valve having an axis extending between two ends with a first end being secured to said second bearing so as to permit flexure of said valve and a second end coacting with said discharge port to control flow therethrough;a notch formed in said discharge port on the cylinder side of said second bearing and on the side of said discharge port towards said first end of said valve;a muffler overlying said valve;a discharge flow path extending between said compression chamber and said discharge and including said recess, said notch in said second bearing, said discharge port, said valve and, said muffler and the interior of said shell; andsaid recess and said notch coacting to direct flow into said discharge port in a streamlined fashion with flow from said discharge port discharging into said muffler and thence passing into the interior of said shell.