Compressor scroll provided with an oil sump fairing

A scroll compressor including:

• a hermetic casing provided with a suction inlet configured to supply the scroll compressor with refrigerant to be compressed;
• a compression unit arranged within the hermetic casing and configured to compress the refrigerant supplied by the suction inlet;
• a drive shaft configured to drive an orbiting scroll of the compression unit in an orbital movement, the drive shaft being rotatable around a rotation axis;
• an electric motor coupled to the drive shaft and configured to drive in rotation the drive shaft about the rotational axis (A), the electric motor including a rotor which is secured to the drive shaft and a stator which is disposed around the rotor, the stator including a stator core and stator windings wound on the stator core, the stator windings defining an upper stator end winding and a lower stator end winding;
• an oil sump located at a lower part of the hermetic casing;
• a refrigerant guiding device configured to force a main part of the refrigerant, entering the scroll compressor through the suction inlet, to flow through the electric motor from the upper stator end winding to the lower stator end winding, before reaching the compression unit;
• an oil sump fairing arranged between a lower axial end of the electric motor and a free surface of oil stored in the oil sump, the oil sump fairing being configured to prevent a refrigerant flow, flowing downwardly through the electric motor and coming out of the electric motor, from directly impacting the free surface of the oil stored in the oil sump;
• wherein the oil sump fairing includes:
• a bottom portion which is facing the lower axial end of the electric motor, the bottom portion having an inner circumferential edge and an outer circumferential edge;
• and
• a circumferential wall portion extending along the outer circumferential edge of the bottom portion and upwardly from said outer circumferential edge;
• further including a flow passage defined by an inner surface of the hermetic casing and an outer circumferential surface of the oil sump fairing;
• and
• wherein the bottom portion is conically shaped, the outer circumferential edge of the bottom portion being closer to the oil sump than the inner circumferential edge of the bottom portion.

A scroll compressor including:

• a hermetic casing provided with a suction inlet configured to supply the scroll compressor with refrigerant to be compressed;
• a compression unit arranged within the hermetic casing and configured to compress the refrigerant supplied by the suction inlet;
• a drive shaft configured to drive an orbiting scroll of the compression unit in an orbital movement, the drive shaft being rotatable around a rotation axis;
• an electric motor coupled to the drive shaft and configured to drive in rotation the drive shaft about the rotational axis (A), the electric motor including a rotor which is secured to the drive shaft and a stator which is disposed around the rotor, the stator including a stator core and stator windings wound on the stator core, the stator windings defining an upper stator end winding and a lower stator end winding;
• an oil sump located at a lower part of the hermetic casing;
• a refrigerant guiding device configured to force a main part of the refrigerant, entering the scroll compressor through the suction inlet, to flow through the electric motor from the upper stator end winding to the lower stator end winding, before reaching the compression unit;
• and
• an oil sump fairing arranged between a lower axial end of the electric motor and a free surface of oil stored in the oil sump, the oil sump fairing being configured to prevent a refrigerant flow, flowing downwardly through the electric motor and coming out of the electric motor, from directly impacting the free surface of the oil stored in the oil sump;
• and
• further including a flow passage defined by an inner surface of the hermetic casing and an outer circumferential surface of the oil sump fairing, said flow passage extending around an entire outer circumference of the oil sump fairing.