Lubricating oil supply apparatus and compressor using lubricating oil supply apparatus

A compressor comprising a lubricating oil supply apparatus, the lubricating oil supply apparatus comprising:

• a rotational shaft;
• a hollow lubricating oil supply path formed along a longitudinal direction of the rotational shaft;
• a lubricating oil supply portion installed at a lower end of the rotational shaft to supply lubricating oil to the lubricating oil supply path;
• a bypass hole provided at a side surface of the rotational shaft to allow a space outside of the rotational shaft and the lubricating oil supply path to communicate;
• and
• a valve body installed on the rotational shaft to open and close the bypass hole, wherein the valve body comprises:
• a valve that opens and closes the bypass hole;
• and
• a spring that elastically presses the valve in a direction toward a center of the rotational shaft, and wherein a degree of opening of the bypass hole is determined based on a degree of opening of the valve, which is subjected to a centrifugal force generated by rotation of the rotational shaft, moving in a direction away from the center of the rotational shaft while overcoming an elastic force of the spring.

A lubricating oil supply apparatus, comprising:

• a rotational shaft;
• a hollow lubricating oil supply path formed in the rotational shaft;
• a lubricating oil supply portion installed at a lower end of the rotational shaft to supply lubricating oil to the lubricating oil supply path;
• a bypass hole provided at a side surface of the rotational shaft to allow a space outside of the rotational shaft and the lubricating oil supply path to communicate;
• and
• a valve body installed on the rotational shaft to open and close the bypass hole, wherein the valve body comprises:
• a valve that opens and closes the bypass hole;
• and
• a spring that elastically presses the valve in a direction toward a center of the rotational shaft, wherein a degree of opening of the bypass hole is determined based on a degree of opening of the valve, and wherein the degree of opening of the bypass hole increases as a rotational speed of the rotational shaft increases.