Oil Separator Built-In Compressor

Abstract

Provided is an oil separator built-in compressor, which prevents a drop in the separating ability of an oil separator while reducing a pressure loss in a communication hole formed between a discharge chamber and an oil separation chamber and which also considers the working feasibility of a casing. The oil separator built-in compressor comprises: a separation chamber arranged adjacent to the discharge chamber and formed entirely thereof into a space in order to separate an oil-containing gas being introduced, centrifugally into gas and oil so that the separated oil flows downward whereas the separated gas is released upward; and the communication hole formed between the discharge chamber and the separation chamber in order to introduce the oil-containing gas from the discharge chamber into the separation chamber. The oil separator built-in compressor is characterized in that the oil separator is formed of the joint structure of two members for constituting the compressor, and in that a portion of the inner wall face of the communication hole is formed at a position farther from the joining face of the joint structure than the inner wall face of the separation chamber.

1 . An oil separator built-in compressor comprising:
 a separation chamber which is arranged adjacent to a discharge chamber and an inside of which is formed entirely into a space so as to separate an oil-containing gas introduced, centrifugally into gas and oil so that a separated oil flows downward whereas a separated gas is released upward; and   a communication hole, which is formed between said discharge chamber and said separation chamber and which introduces said oil-containing gas from said discharge chamber into said separation chamber,   characterized in that an oil separator is formed from a joint structure of two members for constituting a compressor, and in that a portion of an inner wall surface of said communication hole is formed at a position farther from a joining face of said joint structure than said inner wall surface of said separation chamber.   
     
     
         2 . The oil separator built-in compressor according to  claim 1 , wherein said communication hole is formed at a position farthest from said joining face of said joint structure. 
     
     
         3 . The oil separator built-in compressor according to  claim 1 , wherein a plural of said communication holes are arrayed in a vertical direction. 
     
     
         4 . The oil separator built-in compressor according to  claim 3 , wherein said communication holes are opened in a same direction toward said separation chamber. 
     
     
         5 . The oil separator built-in compressor according to  claim 3 , wherein said communication holes are opened in different directions toward said separation chamber. 
     
     
         6 . The oil separator built-in compressor according to  claim 3 , wherein said communication holes are formed so as to make an array pitch P [mm] of said communication holes and a vertical width W [mm] of each communication hole satisfy a following formula:
     W+ 2 ≦P≦W+ 7.   
     
     
         7 . The oil separator built-in compressor according to  claim 1 , provided with said oil separator which has a lower hole to deliver said oil separated in said separation chamber into an oil storing chamber located below said separation chamber. 
     
     
         8 . The oil separator built-in compressor according to  claim 1 , wherein said separation chamber is formed into a cylindrical shape of which bus part extends linearly. 
     
     
         9 . The oil separator built-in compressor according to  claim 1 , wherein said separation chamber is formed into a cylindrical shape of which bus part curves. 
     
     
         10 . The oil separator built-in compressor according to  claim 1 , wherein a compressor is a scroll type compressor, wherein one of said two members is a fixed scroll forming member and another is a compressor casing. 
     
     
         11 . The oil separator built-in compressor according to  claim 1 , wherein a compressor is a compressor for an automotive air conditioning system.