초록 ▼

A direct suction hermetic compressor assembly is disclosed including a hermetically sealed housing having enclosed therein a compressor mechanism discharging compressed gas refrigerant into the interior of the housing, thereby creating a high pressure housing. The compressor mechanism includes a cra

A direct suction hermetic compressor assembly is disclosed including a hermetically sealed housing having enclosed therein a compressor mechanism discharging compressed gas refrigerant into the interior of the housing, thereby creating a high pressure housing. The compressor mechanism includes a crankcase defining a suction cavity into which low pressure suction gas is directly introduced. Bearings in the crankcase communicate between the housing interior and the suction cavity, and rotatably support a crankshaft. Annular seals received within grooves in the crankshaft bear against the bearings and are actuated and lubricated by oil fed from within the grooves to prevent high to low pressure gas leakage and to facilitate bearing lubrication. A scotch yoke mechanism operably couples a plurality of radially disposed pistons to a crankshaft eccentric portion within the suction cavity. Oil ducts open onto the loaded surface of the eccentric to limit oil leakage into the suction cavity.

대표청구항 ▼

A compressor assembly, comprising: a hermetically sealed housing having a discharge pressure space therein; a crankcase within said housing, said crankcase including a pair of axially aligned sleeve bearings and a plurality of cylinders formed therein, said crankcase including a suction cavity into

A compressor assembly, comprising: a hermetically sealed housing having a discharge pressure space therein; a crankcase within said housing, said crankcase including a pair of axially aligned sleeve bearings and a plurality of cylinders formed therein, said crankcase including a suction cavity into which said pair of bearings and said plurality of cylinders open, each of said pair of bearings having a first end in communication with said discharge pressure space and a second end in-communication with said suction cavity; a crankshaft rotatably journalled in said pair of bearings and having an eccentric portion located in said suction cavity; a plurality of pistons operably coupled to said eccentric portion and operably disposed in respective said cylinders for compressing and discharging refrigerant into said discharge pressure space; and seal means for separating said suction cavity from said discharge pressure space such that during compressor operation pressure leakage from said discharge pressure space into said suction cavity through said pair of bearings is substantially eliminated, said seal means comprising a pair of annular sealing elements each disposed between said crankshaft and a respective one of said pair of bearings.