Tilting plate type compressor

Abstract

A tilting plate type compressor includes: cylinder bores; a crank chamber; a drive shaft rotatably supported by a bearing provided within a bearing cavity; a tilting plate provided within the crank chamber and capable of swingably rotating due to a rotation of the drive shaft; and pistons capable of reciprocating within the cylinder bores due to swingably rotating of the tilting plate; an extraction path communicating between the crank chamber and a suction chamber; and an intake path communicating between the crank chamber and a discharge chamber. The extraction path includes an intra-axis path provided within the drive shaft and opens into the bearing cavity. The intake path opens into the bearing cavity and communicates with the crank chamber via the bearing cavity. According to the compressor, it can be prevented much as possible that oil leaks from the crank chamber through the extraction path.

1 . A tilting plate type compressor comprising:
 a housing within which a plurality of cylinder bores and a crank chamber communicating with the plurality of cylinder bores are provided;   a drive shaft rotatably provided within the housing so as to penetrate the crank chamber and supported by the housing via a bearing provided within a bearing cavity;   a tilting plate provided within the crank chamber and capable of swingably rotating due to a rotation of the drive shaft;   a plurality of pistons capable of reciprocating within the plurality of cylinder bores, respectively, due to swingably rotating of the tilting plate;   an extraction path communicating between the crank chamber and a suction chamber; and   an intake path communicating between the crank chamber and a discharge chamber; wherein   the extraction path includes an intra-axis path provided within the drive shaft and opens into the bearing cavity, and   the intake path opens into the bearing cavity and communicates with the crank chamber via the bearing cavity.   
   
   
       2 . The compressor according to  claim 1 , wherein
 an expanded cavity communicating with the bearing cavity is provided around the bearing cavity, and   the intra-axis path opens into the expanded cavity.   
   
   
       3 . The compressor according to  claim 1 , wherein
 the intake path opens into the bearing cavity at a farther position from the crank chamber than an opening position of the intra-axis path into the bearing cavity.   
   
   
       4 . The compressor according to  claim 1 , wherein
 the intake path opens at a lower position within the bearing cavity under an installed condition of the compressor.   
   
   
       5 . The compressor according to  claim 2 , wherein
 the intake path opens into the expanded cavity at a farther position from the crank chamber than an opening position of the intra-axis path into the expanded cavity.   
   
   
       6 . The compressor according to  claim 2 , wherein
 the intake path opens at a lower position within the expanded cavity under an installed condition of the compressor.