Hermetic compressor

Abstract

A compressing unit of a hermetic compressor includes a suction valve placed at an opening of a compressing room and a suction muffler. The muffler includes a suction muffler body which forms a sound-deadening space, a first communicating path which communicates with the suction valve and with the sound-deadening space, and a second communicating path which communicates with a hermetic container and with the sound-deadening space. An opening, situated in the sound-deadening space, of the first communicating path, and an opening, situated in the sound-deadening space, of the second communicating path are both open in the same direction. In addition, a sound-insulating wall is disposed on the wall of the muffler body at a place at least confronting both of the openings. This structure achieves low noise and high efficiency.

1 . A hermetic compressor comprising: 
 an electric motor unit;    a compressing unit driven by the electric motor unit;    a hermetic container accommodating the electric motor unit and the compressing unit; and    the compressing unit comprising: 
 a suction valve disposed at an opening of a compressing room and 
 a suction muffler having:  
 a suction muffler body for forming a sound-deadening space;  
 a first communicating path for communicating with the suction valve and with the sound-deadening space; and  
 a second communicating path for communicating with the hermetic container and with the sound-deadening space,  
 
   wherein an opening, situated in the sound-deadening space, of the first communicating path, and an opening, situated in the sound-deadening space, of the second communicating path are open in a substantially identical direction, and    wherein a wall of the suction muffler body has a sound-insulating wall at a place at least confronting both of the openings situated in the sound-deadening space.    
     
     
         2 . The hermetic compressor of  claim 1 , wherein the sound-insulating wall is formed of a part of the suction muffler body.  
     
     
         3 . The hermetic compressor of  claim 2 , wherein the sound-insulating wall and the wall of the suction muffler body form a blocked space.  
     
     
         4 . The hermetic compressor of  claim 2 , 
 wherein the suction muffler is made from synthetic resin and formed of at least two components, and    wherein the sound-insulating wall is disposed vertically with respect to an opening face of the suction muffler body.    
     
     
         5 . The hermetic compressor of  claim 1 , wherein the sound-insulating wall works as a guiding wall for guiding gas sucked from the second communicating path to the first communicating path smoothly.  
     
     
         6 . The hermetic compressor of  claim 5 , wherein a sectional view of the guiding wall shows like letter U.