Patent ID: 11971036
Assignee: GUANGDONG MEIZHI PRECISION-MANUFACTURING CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A compressor comprising:
a shell defining a cavity;
a compression assembly, wherein a part of the compression assembly is fixedly connected to the shell and located in the cavity, and the cavity is divided into a first cavity and a second cavity by the compression assembly;
a motor, wherein a part of the motor is arranged in the first cavity, wherein a part of the shell located below a central axis of the motor is a first shell, and wherein the motor comprises:
a crankshaft, wherein a first end of the crankshaft is located in the first cavity, and a second end of the crankshaft is connected to the compression assembly;
a rotor, sleeved on the first end of the crankshaft; and
a stator, sleeved on an outer-side wall of the rotor, wherein an interval is formed between at least a part of an outer-side wall of the stator and an inner-side wall of the shell;

an oil sump arranged in the second cavity; and
an oil return channel arranged in the compression assembly and configured to communicate the first cavity with the second cavity,
wherein:
the oil return channel is provided with an oil inlet facing the first cavity, and the oil inlet has a dividing line parallel to a horizontal plane where the central axis of the motor is located,
a distance between the dividing line and an inner-side wall of the first shell is a first relative distance,
the first relative distance is greater than 0 mm and less than or equal to 12% of an inner diameter of the shell, and
a sectional area of the interval on a cross section of the crankshaft is a first sectional area, a sectional area of the oil return channel on a cross section of the crankshaft is a second sectional area, and the second sectional area is less than or equal to 30% of the first sectional area.