Compressor

Abstract

A compressor according to the present invention includes an oil separation mechanism and an oil supply mechanism. The oil separation mechanism includes an oil separation chamber and an oil drain path. The oil supply mechanism includes an oil supply port. The oil drain path includes a first flow path formed by penetrating a second partition of a housing and configured to open toward a first partition of a housing from the oil separation chamber, and a second flow path recessed in at least one of the first partition and the second partition and formed by the cooperation of the first partition and the second partition so as to get communicated with the first flow path. An outlet of the second flow path is located at a higher level in a vertical direction than an inlet of the second flow path while avoiding a direction facing the oil supply port.

1 . A compressor comprising:
 a housing;   a compression mechanism accommodated in the housing, forming a suction chamber, a discharge chamber, and a compression chamber in conjunction with the housing, and adapted to suck refrigerant into the compression chamber from the suction chamber, compress the refrigerant, and discharge the refrigerant to the discharge chamber;   an oil separation mechanism provided in the discharge chamber and adapted to separate lubricating oil from the refrigerant and store the lubricating oil in the discharge chamber; and   an oil supply mechanism adapted to lead the lubricating oil in the discharge chamber to the compression mechanism,   wherein the housing comprises a housing body provided with an inner circumferential surface extending in a circumferential direction, a first partition provided in the housing body and adapted to separate the compression chamber and the discharge chamber from each other, and a second partition coupled to the first partition and provided with the oil separation mechanism,   the oil separation mechanism comprises an oil separation chamber formed in the second partition and adapted to separate the lubricating oil from the refrigerant led from the compression chamber, and an oil drain path adapted to communicate the oil separation chamber with the discharge chamber,   the oil supply mechanism comprises an oil supply port formed in the second partition and configured to open vertically downward to take in the lubricating oil from the discharge chamber,   the oil drain path comprises a first flow path formed by penetrating the second partition and configured to open toward the first partition from the oil separation chamber and a second flow path recessed in at least one of the first partition and the second partition and formed by the cooperation of the first partition and the second partition so as to be communicated with the first flow path, and   an outlet of the second flow path is located at a higher level in a vertical direction than an inlet of the second flow path while avoiding a direction facing the oil supply port.   
     
     
         2 . The compressor according to  claim 1 , wherein the outlet of the second flow path is placed face-to-face with the inner circumferential surface of the housing body. 
     
     
         3 . The compressor according to  claim 1 , wherein if a normal is defined at a position where the outlet of the second flow path comes face-to-face with the inner circumferential surface of the housing body, the second flow path intersects the normal at an acute angle. 
     
     
         4 . The compressor according to  claim 1 , wherein:
 the housing comprises a cylinder block in which a cylinder chamber is formed, the housing body configured to surround the cylinder block, the first partition configured to form the discharge chamber between the cylinder block and the housing body, and the second partition;   the compression mechanism comprises a rotor installed in the cylinder chamber rotatably around a rotational axis with a plurality of vane grooves formed therein and vanes installed advanceably/retractably in the respective vane grooves;   the compression mechanism forms the compression chamber defined by one face of the cylinder chamber, an inner circumferential surface of the cylinder chamber, another face of the cylinder chamber, an outer circumferential surface of the rotor, and the respective vanes;   a back pressure chamber is provided between each of the vanes and the corresponding one of the vane grooves; and   the oil supply port is communicated with the back pressure chambers through a back pressure flow path.   
     
     
         5 . The compressor according to  claim 4 , wherein the first partition includes a side plate configured to form one face of the cylinder chamber. 
     
     
         6 . The compressor according to  claim 4 , wherein the first partition includes a gasket.