Scroll compressor

Abstract

A scroll compressor 1 includes: a scroll unit 6 ; a crank mechanism 44 ; a housing 2, 4 in which the scroll unit 6 is accommodated and which has a suction port 22 of refrigerant provided in an outer peripheral wall 2 b located on the outer peripheral side of the scroll unit 6 ; and a sealing device 30 which seals between the housing 2, 4 and a rotary shaft 24 , wherein the housing 2, 4 includes: a crank chamber 48 in which the crank mechanism 44 is positioned; a seal chamber 50 in which the sealing device 30 is positioned; a communication hole 52, 58 which communicates the crank chamber 48 with the seal chamber 50 ; and a first guide groove 54 which extends from an opening of the communication hole 52, 58 in the seal chamber 50 to the vicinity of the sealing device 30.

1 . A scroll compressor, comprising:
 a scroll unit for compressing a refrigerant by orbiting of a movable scroll relative to a fixed scroll;   a crank mechanism for converting rotary motion of a rotary shaft into orbiting motion of the movable scroll and transferring the orbiting motion;   a housing for accommodating the scroll unit, the housing including a suction port of the refrigerant on an outer peripheral wall located on an outer peripheral side of the scroll unit; and   a sealing device for sealing between the housing and the rotary shaft, wherein   
       the housing includes:
 a crank chamber in which the crank mechanism is positioned, 
 a seal chamber in which the sealing device is positioned, 
 a communication hole for communicating the crank chamber with the seal chamber, and 
 a first guide groove extending from an opening of the communication hole in the seal chamber to a vicinity of the sealing device, and wherein 
 the crank mechanism includes a counterweight attached to the rotary shaft, and 
 the communication hole is formed at a position which is intermittently covered with the counterweight as the counterweight circles. 
 
     
     
         2 . The scroll compressor according to  claim 1 , wherein
 the housing further includes a second guide groove in which an opening of the communication hole in the crank chamber is positioned.   
     
     
         3 . (canceled) 
     
     
         4 . The scroll compressor according to  claim 1 , wherein
 the communication hole is inclined along a circling direction of the counterweight with respect to a radial direction of the rotary shaft.   
     
     
         5 . The scroll compressor according to  claim 1 , wherein
 the counterweight has an inclined surface inclined with respect to an axis of the rotary shaft.   
     
     
         6 . The scroll compressor according to  claim 1 , wherein
 the counterweight has a stepped surface protruding in a radial direction of the rotary shaft.