Scroll compressor

A scroll compressor, comprising:

• a shell;
• a first scroll fixed to the shell, the first scroll comprising a first end plate and a first scroll wrap;
• a second scroll, the second scroll comprising a second end plate and a second scroll wrap, and the first scroll wrap extending from the first end plate toward the second end plate and the second scroll wrap extending from the second end plate toward the first end plate, such that the second scroll wrap and the first scroll wrap fit with each other to form a compression cavity for compressing a medium;
• an electric motor;
• and
• a screw oil pump, driven by the electric motor, a top end of the screw oil pump fitting with the second scroll, and a lower end of the screw oil pump extending into an oil bath located at a bottom of the shell;
• wherein, the screw oil pump comprises:
• a shaft, which is connected to the electric motor to be rotated and is provided with a first channel extending along an entire length of the shaft for feeding oil, a top end of the shaft being fixed to the second end plate;
• a feeding piece, provided with a spirally rising thread;
• and
• a cylindrical accommodating piece, which accommodates the feeding piece with a gap between the cylindrical accommodating piece and the feeding piece,
• wherein, one of the feeding piece and the accommodating piece is fixed to the shaft, and the other one of the feeding piece and the accommodating piece is fixed in the shell, such that oil is fed to the first channel along the thread when the feeding piece and the accommodating piece rotate relatively to each other.