Compressor

Abstract

[Object of the Invention] The object of the present invention is to provide a compressor comprising a scroll compressing mechanism provided with a fixed scroll having an end plate and a scroll body projecting from the end plate and a movable scroll having an end plate and a scroll body projecting from the end plate and meshing with the fixed scroll to form a plurality of operation chambers between them, and a housing accommodating the scroll compressing mechanism, wherein the housing cooperates with the end plate of the fixed scroll to form a discharge passage communicating with the scroll compressing mechanism and a discharge port connected to the higher pressure side portion of an external coolant circuit, the discharge passage is provided with a first discharge chamber opposing the center portion of the end plate of the fixed scroll, an oil separation chamber communicating with the first discharge chamber and opposing the outer peripheral portion of the end plate of the fixed scroll, and a second discharge chamber communicating with the oil separation chamber and opposing the outer peripheral portion of the end plate of the fixed scroll, characterized in that the compressor comprises means for placing the discharge port into communication with the second discharge chamber independently of the location of the discharge port. [Disclosure of the Invention] A compressor comprises a scroll compressing mechanism provided with a fixed scroll having an end plate and a scroll body projecting from the end plate and a movable scroll having an end plate and a scroll body projecting from the end plate and meshing with the fixed scroll to form a plurality of operation chambers between them, and a housing accommodating the scroll compressing mechanism. The housing cooperates with the end plate of the fixed scroll to form a discharge passage communicating with the scroll compressing mechanism and a discharge port connected to the higher pressure side portion of an external coolant circuit. The discharge passage is provided with a first discharge chamber opposing the center portion of the end plate of the fixed scroll, an oil separation chamber communicating with the first discharge chamber and opposing the outer peripheral portion of the end plate of the fixed scroll, and a second discharge chamber communicating with the oil separation chamber and opposing the outer peripheral portion of the end plate of the fixed scroll. A through hole is formed in the housing to extend from the outer surface of the housing to the second discharge chamber through the discharge port, thereby placing the discharge port into communication with the second discharge chamber. A closing member is disposed to close the end of the through hole on the side of the outer surface of the housing.

1 . A compressor comprising a scroll compressing mechanism provided with a fixed scroll having an end plate and a scroll body projecting from the end plate and a movable scroll having an end plate and a scroll body projecting from the end plate and meshing with the fixed scroll to form a plurality of operation chambers between them, and a housing accommodating the scroll compressing mechanism, wherein the housing cooperates with the end plate of the fixed scroll to form a discharge passage communicating with the scroll compressing mechanism and a discharge port connected to the higher pressure side portion of an external coolant circuit, the discharge passage is provided with a first discharge chamber opposing the center portion of the end plate of the fixed scroll, an oil separation chamber communicating with the first discharge chamber and opposing the outer peripheral portion of the end plate of the fixed scroll, and a second discharge chamber communicating with the oil separation chamber and opposing the outer peripheral portion of the end plate of the fixed scroll, a through hole is formed in the housing to extend from the outer surface of the housing to the second discharge chamber through the discharge port, thereby placing the discharge port into communication with the second discharge chamber, and a closing member is disposed to close the end of the through hole on the side of the outer surface of the housing. 
     
     
         2 . A compressor of  claim 1 , wherein the closing member is a seal bolt. 
     
     
         3 . A compressor of  claim 1 , wherein the closing member is a relief valve for discharging the coolant gas to the external environment when the pressure of the coolant gas discharged from the compressing mechanism exceeds a predetermined level.