Rotary vane refrigerant gas compressor

Claim 2

A rotary vane refrigerant gas compressor comprising a compressor housing having a cavity therein, an inlet into said cavity and a discharge outlet from said cavity, a rotor means mounting said rotor for rotation in said cavity, the axis of rotation of said rotor being offset from the center of said cavity, said rotor having a plurality of slots therein, vanes movably located in said slots separating said cavity into a plurality of moving chambers, said vanes cooperating with said cavity walls and said rotor to compress gas supplied to said cavity from said inlet and to discharge said compressed gas through said discharge outlet, an oil sump housing attached to said compressor housing, means for supplying oil from said sump housing to said cavity, said discharge outlet opening into said oil sump housing, a valve normally closing said discharge outlet and adapted to open when the pressure of gas and oil on the upstream side thereof exceeds a predetermined value, and a separator device in said sump in the path of gas and oil discharged from said discharge outlet, at least one fastening device securing said separator device to said compressor housing, said separator device comprising at least two sections spaced apart from one another, each section including a screen and a perforated plate adjacent and on the downstream side of said screen, said separator device including an L-shaped deflector to prevent gas and oil discharged from said discharge port from bypassing said separator, said fastening device passing through one leg of said L-shaped deflector.

Claim 3

A rotary vane refrIgerant gas compressor as set forth in claim 1 wherein said compressor has an outlet passage, one of said sections extending beyond said deflector and causing gas and oil passing through said separator to pass through the portion of said one section extending beyond said deflector before passing to said outlet passage.

Claim 4

A rotary vane refrigerant gas compressor as set forth in claim 2 further including a second fastening device having an opening therethrough, said means for supplying oil from said sump housing to said cavity including a tube extending from said sump through said second fastening device, said compressor housing having a port therein opening into said cavity, said tube opening into said port.

Claim 5

A rotary vane refrigerant gas compressor comprising a compressor housing having a cavity therein, an inlet into said cavity and a discharge outlet from said cavity, a rotor, means mounting said rotor for rotation in said cavity, the axis of rotation of said rotor being offset from the center of said cavity, said rotor having a plurality of slots therein, vanes movably located in said slots separating said cavity into a plurality of moving chambers, said vanes cooperating with said cavity walls and said rotor to compress gas supplied to said cavity from said inlet and to discharge said compressed gas through said discharge outlet, an oil sump housing attached to said compressor housing, means for supplying oil from said sump housing to said cavity, said discharge outlet opening into said oil sump housing, a valve normally closing said discharge outlet and adapted to open when the pressure of gas and oil on the upstream side thereof exceeds a predetermined value, and a separator device in said sump in the path of gas and oil discharged from said discharge outlet, fastening means securing said separator device to said compressor housing, said fastening means including one fastening device having an opening therethrough, said means for supplying oil from said sump to said cavity including a tube extending from said sump housing through said one fastening device, said compressor housing having a port therein opening into said cavity, said tube opening into said port.

Claim 6

A rotary vane refrigerant gas compressor comprising a compressor housing having a cavity therein, an inlet into said cavity and a discharge outlet from said cavity, a rotor, means mounting said rotor for rotation in said cavity, the axis of rotation of said rotor being offset from the center of said cavity, said rotor having a plurality of slots therein, vanes movably located in said slots separating said cavity into a plurality of moving chambers, said vanes cooperating with said cavity walls and said rotor to compress gas supplied to said cavity from said inlet and to discharge said compressed gas through said discharge outlet, an oil sump housing attached to said compressor housing, means for supplying oil from said sump housing to said cavity, said discharge outlet opening into said oil sump housing, a valve normally closing said discharge outlet and adapted to open when the pressure of gas and oil on the upstream side thereof exceeds a predetermined value, and a separator device in said sump in the path of gas and oil discharged from said discharge outlet, fastening means securing said separator device to said compressor housing, said fastening means including one fastening device having an opening therethrough, said means for supplying oil from said sump to said cavity including a tube extending from said sump housing through said one fastening device, said compressor housing having a port therein opening into said cavity, said tube opening into said port.

Claim 7

A rotary vane refrigerant gas compressor as set forth in claim 4 wherein said cavity is noncircular, and has a first portion having a curvature generally corresponding to the curvature of said rotor, and a second portion having less curvature than said first portion.

Claim 8

A rotary vane refrigerant gas compressor as set forth in claim 4 wherein each vane includes a tip edge extending along the outer periphery thereof adjacent the trailing side of the vane, and a tapered portion extending from said tip edge to the leading side of said vane.

Claim 9

A rotary vane refrigerant gas compressor comprising a compressor housing having a cavity therein, an inlet into said cavity and a discharge outlet from said cavity, a rotor, means mounting said rotor for rotation in said cavity, the axis of rotation of said rotor being off-set from the center of said cavity, said rotor having a plurality of slots therein, vanes movably located in said slots separating said cavity into a plurality of moving chambers, said vanes cooperating with said cavity walls and said rotor to compress gas supplied to said cavity from said inlet and to discharge said compressed gas through said discharge outlet, an oil sump housing attached to said compressor housing, means for supplying oil from said sump housing to said cavity, said discharge outlet opening into said oil sump housing, a valve normally closing said discharge outlet and adapted to open when the pressure of gas and oil on the upstream side thereof exceeds a predetermined value, and a separator device in said sump in the path of gas and oil discharged from said discharge outlet, at least one fastening device securing said separator device to said compressor housing, said means for supplying oil from said sump hosuing to said cavity including a tube extending from saiD sump housing to a lubricating passage in said housing, said lubricating passage opening into said cavity, said tube having a filter on the end thereof in said sump housing, said separator device including a generally L-shaped deflector to prevent gas and oil discharge from said discharge port from bypassing said separator, said fastening device passing through one leg of said generally L-shaped deflector.

Claim 10

A rotary vane refrigerant gas compressor comprising a compressor housing having a cavity therein, an inlet into said cavity and a discharge outlet from said cavity, a rotor, means mounting said rotor for rotation in said cavity, the axis of rotation of said rotor being off-set from the center of said cavity, said rotor having a plurality of slots therein, vanes movably located in said slots separating said cavity into a plurality of moving chambers, said vanes cooperating with said cavity walls and said rotor to compress gas supplied to said cavity from said inlet and to discharge said compressed gas through said discharge outlet, an oil sump housing attached to said compressor housing, means for supplying oil from said sump housing to said cavity, said discharge outlet opening into said oil sump housing, a valve normally closing said discharge outlet and adapted to open when the pressure of gas and oil on the upstream side thereof exceeds a predetermined value, and a separator device in said sump in the path of gas and oil discharged from said discharge outlet, at least one fastening device securing said separator device to said compressor housing, said means for supplying oil from said sump hosuing to said cavity including a tube extending from saiD sump housing to a lubricating passage in said housing, said lubricating passage opening into said cavity, said tube having a filter on the end thereof in said sump housing, said separator device including a generally L-shaped deflector to prevent gas and oil discharge from said discharge port from bypassing said separator, said fastening device passing through one leg of said generally L-shaped deflector.

Claim 11

A rotary vane refrigerant gas compressor as set forth in claim 7 wherein said compressor has an outlet passage, one of said sections extending beyond said deflector and causing gas and oil passing through said separator to pass through the portion of said one section extending beyond said deflector before passing to said outlet passage.

Claim 12

A rotary vane refrigerant gas compressor as set forth in claim 7 wherein each vane includes a tip edge extending along the outer periphery thereof adjacent the trailing side of the vane, and a tapered portion extending from said tip edge to the leading side of said vane.

Claim 13

A rotary vane refrigerant gas compressor as set forth in claim 7 wherein said cavity is noncircular, and has a first portion having a curvature generally corresponding to the curvature of said rotor, and a second portion having less curvature than said first portion.