Vane rotary compressor

Abstract

Disclosed herein is a vane rotary compressor in which a fluid such as a refrigerant is compressed, with the volume of a compression chamber being reduced during the rotation of a rotor. In addition, disclosed is a vane rotary compressor having a configuration such that a space between a cylinder and a housing is divided into a high-pressure chamber, from which a high-pressure refrigerant is discharged, and an oil storage chamber in which oil included in the refrigerant is separated and stored, and having an oil decompression structure using a gap between a rotor and a head portion.

What is claimed is: 
     
         1 . A vane rotary compressor comprising:
 a hollow cylinder;   a housing including a cylinder portion which is formed with a space portion to mount the cylinder, and a first head portion which is formed integrally with the cylinder portion so as to close one axial side of the cylinder portion;   a second head portion to close the other axial side of the cylinder portion;   a rotor which is mounted within the cylinder and rotates by the power of a drive source;   a plurality of vanes which protrudes from an outer peripheral surface of the rotor toward an inner peripheral surface of the cylinder and divides a hollow portion of the cylinder into a plurality of compression chambers;   a high-pressure chamber which is formed in one side of the housing, into which a high-pressure refrigerant compressed in each of the compression chambers is discharged, and which is formed with a discharge hole communicating with a discharge port; and   an oil storage chamber which is formed in the other side of the housing and stores oil separated by an oil separation pipe provided at the discharge port.   
     
     
         2 . The vane rotary compressor according to  claim 1 , wherein the high-pressure chamber includes a muffler space which is formed to protrude from one side of an outer peripheral surface of the cylinder portion, and the discharge hole is formed at one side of the muffler space. 
     
     
         3 . The vane rotary compressor according to  claim 1 , wherein the oil storage chamber is formed on an outer peripheral surface of the housing to radially protrude therefrom. 
     
     
         4 . The vane rotary compressor according to  claim 1 , wherein an oil guide hole is formed to extend from one side of the oil storage chamber to one side of a mounting groove to which a rear end of a rotational shaft of the rotor is mounted. 
     
     
         5 . The vane rotary compressor according to  claim 4 , wherein a first expansion groove is formed along an edge of the mounting groove. 
     
     
         6 . The vane rotary compressor according to  claim 5 , wherein a second expansion groove is formed in the form of an involute curve to extend radially outwards from one side of the first expansion groove. 
     
     
         7 . The vane rotary compressor according to  claim 6 , wherein the rotor is formed with a plurality of oil passages which axially penetrates the rotor so as to communicate with the second expansion groove, and the second expansion groove is located at a position corresponding to the oil passages. 
     
     
         8 . The vane rotary compressor according to  claim 7 , wherein an extension groove is formed along an edge of an insertion hole into which a front end of the rotational shaft is inserted, so as to communicate with the oil passages. 
     
     
         9 . The vane rotary compressor according to  claim 5 , wherein at least one second expansion groove is spaced radially outwards from the first expansion groove and formed along a circumferential direction thereof. 
     
     
         10 . The vane rotary compressor according to  claim 9 , wherein the second expansion groove is formed in the form of a circular arc corresponding to a region between a suction hole and an outlet formed at one side of the cylinder in a compression rotation direction of the rotor. 
     
     
         11 . The vane rotary compressor according to  claim 9 , wherein the rotor is formed with a plurality of oil passages which axially penetrates the rotor so as to communicate with the second expansion groove, and the second expansion groove is located at a position corresponding to the oil passages. 
     
     
         12 . The vane rotary compressor according to  claim 11 , wherein an extension groove is formed along an edge of an insertion hole into which a front end of the rotational shaft is inserted, so as to communicate with the oil passages. 
     
     
         13 . The vane rotary compressor according to  claim 1 , wherein one end of each of the vanes is hinge-coupled to one side of the outer peripheral surface of the rotor, and the other end thereof comes into contact with the inner peripheral surface of the cylinder, depending on the rotation of the rotor. 
     
     
         14 . The vane rotary compressor according to  claim 13 , wherein the inner peripheral surface of the cylinder is formed in the form of an involute curve along a circumferential direction thereof.