Suction muffler for hermetic compressor

Abstract

Disclosed is a suction muffler for a hermetic compressor. The suction muffler includes first and second bodies coupled to each other. The first and second bodies have coupling protrusion and recess formed in corresponding positions, respectively. A coupling rib protrudes from the coupling protrusion, and a coupling channel is formed as an indentation on the coupling recess. Coupling guide surfaces are formed on corresponding portions of the coupling rib and recess, respectively, so that the coupling protrusion and recess can be fastened to each other more smoothly. The coupling guide surfaces of the coupling protrusion and recess guide and facilitate the coupling between the first and second bodies. The coupling protrusion and recess are coupled to each other by geometric characteristics so that no separate process is necessary to couple the first and second bodies to each other. This improves the productivity and quality of the suction muffler.

1 . A suction muffler for a hermetic compressor, comprising:
 a first body having an inner space having an opening;   a second body having an inner space having an opening, the second body being coupled to the first body to create a space for allowing a working fluid to flow and for removing noise; and   a coupling protrusion and a coupling recess having a coupling rib and a coupling channel formed in corresponding positions along rims of the openings of the inner spaces of the first and second bodies, respectively, so that the first and second bodies are coupled to each other by coupling the coupling rib and the coupling channel to each other.   
   
   
       2 . The suction muffler as claimed in  claim 1 , wherein the coupling rib of the coupling protrusion protrudes in a direction perpendicular to a direction of coupling between the first and second bodies, and the coupling channel of the coupling recess is an indentation extending in the direction perpendicular to the direction of coupling between the first and second bodies. 
   
   
       3 . The suction muffler as claimed in  claim 2 , wherein the coupling rib protrudes outward along an outer surface of one of the first and second bodies, and the coupling channel is an indentation formed along an inner surface of the other of the first and second bodies. 
   
   
       4 . The suction muffler as claimed in  claim 3 , wherein the coupling rib is formed along the entire outer surface of one of the first and second bodies. 
   
   
       5 . The suction muffler as claimed in  claim 3 , wherein the coupling rib is formed intermittently along the outer surface of one of the first and second bodies. 
   
   
       6 . The suction muffler as claimed in  claim 1 , wherein a coupling guide surface is formed in at least one of corresponding positions on the coupling rib of the coupling protrusion and on the coupling recess to guide coupling between the coupling protrusion and the coupling recess. 
   
   
       7 . The suction muffler as claimed in  claim 6 , wherein the coupling guide surface is a rounded surface. 
   
   
       8 . The suction muffler as claimed in  claim 6 , wherein the coupling guide surface is a chamfer. 
   
   
       9 . The suction muffler as claimed in  claim 6 , wherein a spacer is formed on one of the first and second bodies to force a surface of the coupling rib, the surface lying opposite the coupling guide surface, against a lateral surface of the coupling channel.