Compressor with built-in oil separator

Abstract

A compressor with a built-in centrifugal oil separator is characterized in that the oil separator is formed between a first member and a second member constituting a compressor by the coupled structure of the first member and the second member. In the compressor, by simplifying the structure of the oil separation part, the productivity can be improved, the cost can be reduced, and the freedom of the design of the discharge port position can be ensured.

1 . A compressor with a built-in centrifugal oil separator characterized in that said oil separator is formed between a first member and a second member constituting a compressor by a coupled structure of said first member and said second member. 
   
   
       2 . The compressor with a built-in oil separator according to  claim 1 , wherein said oil separator includes at least a separation chamber separating an oil component and a gas component of oil-containing gas introduced from a discharge chamber from each other by utilizing a centrifugal force, a communication hole provided between said separation chamber and said discharge chamber, and a lower hole leading oil separated in said separation chamber down to an oil storage chamber positioned under said separation chamber. 
   
   
       3 . The compressor with a built-in oil separator according to  claim 1 , wherein a gas passageway is provided between said oil separator and a discharge port connected to outside of said compressor, and said gas passageway is also formed between said first member and said second member by said coupled structure of said first member and said second member. 
   
   
       4 . The compressor with a built-in oil separator according to  claim 2 , wherein said separation chamber is formed in a cylindrical shape whose generating line extends straightly. 
   
   
       5 . The compressor with a built-in oil separator according to  claim 2 , wherein said separation chamber is formed in a cylindrical shape whose generating line is curved. 
   
   
       6 . The compressor with a built-in oil separator according to  claim 2 , wherein an opening of said communication hole toward said separation chamber is directed to said oil storage chamber side. 
   
   
       7 . The compressor with a built-in oil separator according to  claim 2 , wherein a plurality of communication holes are provided. 
   
   
       8 . The compressor with a built-in oil separator according to  claim 7 , wherein openings of said plurality of communication holes toward said separation chamber are directed in a same direction. 
   
   
       9 . The compressor with a built-in oil separator according to  claim 7 , wherein directions of openings of said plurality of communication holes toward said separation chamber are changed from each other. 
   
   
       10 . The compressor with a built-in oil separator according to  claim 3 , wherein a stepped portion or a weir portion is provided in said gas passageway. 
   
   
       11 . The compressor with a built-in oil separator according to  claim 2 , wherein a second discharge chamber different from said discharge chamber is formed between said separation chamber and a discharge port connected to outside of said compressor. 
   
   
       12 . The compressor with a built-in oil separator according to  claim 1 , wherein said compressor is a scroll-type compressor, one of said first member and said second member is a fixed scroll forming member, and the other is a compressor casing.