Scroll compressor having a discharge port

Scroll compressor having a discharge port

  • CN 106,168,212 B
  • Filed: 04/22/2016
  • Issued: 01/01/2021
  • Est. Priority Date: 05/22/2015
  • Status: Active Grant
First Claim
Patent Images

1. A scroll compressor is characterized by comprising:

  • a closed container;

    a compression mechanism portion which is provided in the closed container and has a fixed scroll and an oscillating scroll, and in which plate-like spiral teeth provided on respective seat plate portions of the fixed scroll and the oscillating scroll are combined with each other to form a plurality of compression chambers;

    a motor that drives the compression mechanism;

    a main shaft that is rotatably inserted through a swing bearing into a boss portion provided on a surface of the base plate portion of the swing scroll opposite to the plate-shaped spiral wrap, and that is rotated by the motor to thereby cause the swing scroll to swing; and

    a discharge valve mechanism that covers a discharge port provided in the fixed scroll, allows a refrigerant gas to flow from the compression chamber to an internal space of the closed casing through the discharge port, and prevents a reverse flow of the refrigerant gas,the main shaft has an oil supply path that penetrates the main shaft in an axial direction of the main shaft and supplies refrigerating machine oil stored in an oil storage portion at a lower portion of the closed casing to a sliding portion including the compression mechanism portion based on a pressure difference between a pressure in the closed casing and a pressure in an external space of the boss portion,the seat plate portion of the oscillating scroll has a pressure path that communicates an outer space of the boss portion with an innermost chamber located innermost in a radial direction among the plurality of compression chambers,a pressure path check valve mechanism that allows the refrigerant gas to flow from an outer space of the boss portion toward the innermost side chamber and prevents a reverse flow of the refrigerant gas is provided in the pressure path,the rocking bearing is disposed on an inner side surface of the boss portion, and the oil flowing out from the upper end opening of the oil supply path is supplied between the main shaft and the rocking bearing, and flows into an outer space of the boss portion after lubricating the sliding portion,during a reverse rotation operation of the motor, the refrigerant gas flows from the space outside the boss portion to the innermost chamber through the pressure path, and the pressure in the space outside the boss portion is reduced to supply oil through the oil supply path.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×