Scroll compression mechanism and scroll compressor

A scroll compressor, comprising:

• a housing comprising a housing body, a top cover and a bottom cover, wherein a partition plate is provided in the housing so that the partition defines a high-pressure area with the top cover and the partition plate defines a low-pressure area with the housing body and the bottom cover;
• and
• a compression mechanism provided in the low-pressure area, comprising:
• a non-orbiting scroll member and an orbiting scroll member comprising an orbiting scroll end plate, wherein the orbiting scroll member and the non-orbiting scroll member cooperate with each other to define a series of working fluid chambers comprising a central compression chamber and a fluid suction chamber;
• and
• an oil supply passage for supplying lubricating oil from a lubricating oil source into the scroll compression mechanism,
• wherein the scroll compression mechanism further comprises:
• an adjusting valve comprising a movable valve body;
• and
• a fluid pressure passage comprising a first end and a second end,
• wherein the first end is in fluid communication with a first pressure source to apply a first pressure to a first side end of the movable valve body, the second end is in fluid communication with a second pressure source to apply a second pressure to a second side end of the movable valve body, so that based on a pressure difference between the first pressure and the second pressure the movable valve body can selectively move toward a first direction of reducing a flow cross-sectional area of the oil supply passage and toward a second direction, which is opposite to the first direction, of increasing the flow cross-sectional area of the oil supply passage, thereby adjusting an oil supply amount to the scroll compression mechanism,
• wherein the second pressure source is the fluid suction chamber or the low pressure area outside the scroll compression mechanism.