Lubricating oil supply apparatus and compressor using lubricating oil supply apparatus

A compressor, comprising:

• a rotational shaft provided with a lubricating oil supply path formed along a longitudinal direction of the rotational shaft;
• a frame provided with a rotational support to support rotation of the rotational shaft;
• a motor provided on the rotational shaft and the frame to rotate the rotational shaft in a first direction and a second direction opposite to the first direction with respect to the frame;
• a housing in which lubricating oil is stored at a lower portion thereof and the frame is accommodated at an upper portion of a lubricating oil storage space;
• and
• a lubricating oil supply apparatus installed at a first end of the rotational shaft, wherein at least a portion of the lubricating oil supply apparatus is submerged in the lubricating oil storage space to supply the lubricating oil to the lubricating oil supply path, wherein the lubricating oil supply apparatus comprises:
• a fixed portion provided with an oil inlet, an inner space that communicates with the oil inlet, and an oil chamber that communicates with the oil inlet through the inner space without directly communicating with the oil inlet;
• and
• a rotational portion accommodated in the inner space of the fixed portion and coupled to the rotational shaft to rotate together with the rotational shaft, wherein the rotational portion comprises:
• a space provided at a location spaced apart from a rotational center of the rotational portion in a radial direction and encircling the rotational center of the rotational portion as the rotational portion rotates;
• and
• an oil outlet provided at the rotational center of the rotational portion to be connected to the oil chamber and the lubricating oil supply path, and wherein the oil inlet and the oil chamber each are provided at a location that faces a turning locus of the space so that, as the rotational portion rotates, oil introduced into the space through the oil inlet moves together in a state of being stored in the space, and the oil is supplied from the space to the oil chamber when the space faces the oil chamber, and the oil in the oil chamber is supplied to the lubricating oil supply path through the oil outlet.

A lubricating oil supply apparatus for a bidirectionally rotating compressor, the lubricating oil supply apparatus configured to be installed at an end of a rotational shaft provided with a lubricating oil supply path formed along a longitudinal direction of the rotational shaft to supply lubricating oil to the lubricating oil supply path when the rotational shaft is rotated in a first direction or a second direction opposite to the first direction, wherein the lubricating oil supply apparatus comprises:

• a fixed portion provided with an oil inlet, an inner space that communicates with the oil inlet, and an oil chamber that communicates with the oil inlet through the inner space without directly communicating with the oil inlet;
• and
• a rotational portion accommodated in the inner space of the fixed portion and coupled to the rotational shaft to rotate together with the rotational shaft, wherein the rotational portion comprises:
• a space provided spaced apart from a rotational center of the rotational portion in a radial direction;
• and
• an oil outlet provided at the rotational center of the rotational portion to be connected to the oil chamber and the lubricating oil supply path, and wherein the oil inlet and the oil chamber are each provided at a location facing a turning locus of the space so that, as the rotational portion rotates in either the first direction or the second direction, oil introduced into the space through the oil inlet moves together in a state of being stored in the space, and the oil is supplied from the space to the oil chamber when the space faces the oil chamber, and the oil in the oil chamber is supplied to the lubricating oil supply path through the oil outlet.