Scroll compressor with supporting member in axial direction

Abstract

A scroll compressor includes a case, a fixed scroll having a fixed wrap, and an orbiting scroll having an orbiting wrap coupled to the fixed wrap to define compression chambers. A driving motor has a crankshaft, the crankshaft having one end portion coupled to the orbiting scroll, a main frame and an auxiliary frame fixed onto an inner wall of the case to support the crankshaft, respectively, and a thrust plate having an annular shape and interposed between the auxiliary frame and the crankshaft to support the crankshaft in an axial direction, wherein a plurality of oil channels are formed on a surface of the thrust plate so as to communicate an inside and an outside of the thrust plate with each other.

1 . A scroll compressor comprising a case;
 a fixed scroll having a fixed wrap;   an orbiting scroll having an orbiting wrap coupled to the fixed wrap to define compression chambers, the orbiting scroll performing an orbiting motion with respect to the fixed scroll;   a driving motor having a crankshaft, the crankshaft having one end portion coupled to the orbiting scroll;   a main frame and an auxiliary frame fixed onto an inner wall of the case to support the crankshaft, respectively; and   a thrust plate having an annular shape and interposed between the auxiliary frame and the crankshaft to support the crankshaft in an axial direction,   wherein a plurality of oil channels are formed on a surface of the thrust plate so as to communicate an inside and an outside of the thrust plate with each other.   
     
     
         2 . The compressor of  claim 1 , wherein the plurality of oil channels have a linear shape. 
     
     
         3 . The compressor of  claim 2 , wherein each of the plurality of oil channels extends to be inclined with respect to a radial direction of the annular thrust plate. 
     
     
         4 . The compressor of  claim 1 , wherein the oil channels are formed to allow oil existing outside the thrust plate to be introduced to an inside of the thrust plate in response to rotation of the crankshaft. 
     
     
         5 . The compressor of  claim 4 , wherein if it is assumed that an end of each oil passage located outside the thrust plate is an inlet port and another end thereof located inside the thrust plate is an outlet port, the outlet port is located by being spaced apart from the inlet port by a predetermined angle on a circumference with respect to a rotating direction of the crankshaft. 
     
     
         6 . The compressor of  claim 1 , wherein the thrust plate is located lower than an appropriate minimum oil level. 
     
     
         7 . The compressor of  claim 1 , wherein a protrusion is formed at an outer circumferential portion of the thrust plate so as to be inserted into a stopping groove formed at the auxiliary frame. 
     
     
         8 . A scroll compressor comprising:
 a case;   first and second supporting units fixed to the case;   a crankshaft rotatably supported by the first and second supporting units, the crankshaft having a facing surface facing the second supporting unit in an axial direction;   a driving motor to rotate the crankshaft;   a compression unit coupled to the crankshaft to compress fluid; and   a thrust bearing member located between the facing surfaces of the crankshaft and the second supporting unit,   wherein the thrust bearing member comprises an oil introduction element disposed to be sunk in lubricating oil and configured to allow the lubricating oil to be introduced between frictional surfaces in response to rotation of the crankshaft.   
     
     
         9 . The compressor of  claim 8 , wherein the thrust bearing member is fixed to the second supporting unit to be prevented from being rotated. 
     
     
         10 . The compressor of  claim 8 , wherein the oil introduction element comprises a plurality of oil channels formed on a surface of the thrust bearing member. 
     
     
         11 . The compressor of  claim 10 , wherein the thrust bearing member has an annular shape, and the oil channels extend to communicate inside and outside of the thrust bearing member with each other. 
     
     
         12 . The compressor of  claim 11 , wherein the plurality of oil channels have a linear shape. 
     
     
         13 . The compressor of  claim 12 , wherein each of the plurality of oil channels extends to be inclined with respect to a radial direction of the thrust plate. 
     
     
         14 . The compressor of  claim 11 , wherein if it is assumed that an end of each oil passage located outside the thrust plate is an inlet port and another end thereof located inside the thrust plate is an outlet port, the outlet port is located by being spaced apart from the inlet port by a predetermined angle on a circumference with respect to a rotating direction of the crankshaft.