Acoustic Muffler for a Hermetic Compressor

Abstract

Acoustic muffler for a hermetic compressor, comprising: a hollow base; a cover to be coupled to the hollow base, said parts of hollow base and cover including respective peripheral flanges to be mutually seated according to a seating plane; and a retention means, attaching the hollow base to the cover at the junction of said peripheral flanges, each peripheral flange presenting a respective seating surface provided with at least one recess and one rib radially adjacent and which are shaped to respectively complement one rib and one recess of the seating surface of the other peripheral flange, each rib and recess being continuous and provided to define a locking between the parts of hollow base and cover against relative spacing apart movements in said seating plane, and to define continuous sealing radial labyrinths between the interior and the exterior of the acoustic muffler, at the junction of said peripheral flanges.

1 . Acoustic muffler for a hermetic compressor, comprising:
 a hollow base;   a cover to be coupled to the hollow base, said parts of hollow base and cover including respective peripheral flanges to be mutually seated according to a seating plane; and   a retention means, attaching the hollow base to the cover at the junction of said peripheral flanges,   wherein each peripheral flange presents a respective seating surface provided with at least one recess and one rib radially adjacent and which are shaped to respectively complement one rib and one recess of the seating surface of the other peripheral flange, each rib and recess being continuous and provided to define a locking between the parts of hollow base and cover against relative spacing apart movements in said seating plane, and to define continuous sealing radial labyrinths between the interior and the exterior of the acoustic muffler, at the junction of said peripheral flanges, each part of rib and recess presenting a triangular profile.   
   
   
       2 . The suction muffler, as set forth in  claim 1 , wherein each rib is consecutively provided with a recess in the respective seating surface. 
   
   
       3 . The suction muffler, as set forth in  claim 2 , wherein each recess is defined immediately adjacent to a rib. 
   
   
       4 . The suction muffler, as set forth in  claim 1 , wherein the seating surface of the peripheral flange of the cover has a rib provided in a radially outermost way. 
   
   
       5 . The suction muffler, as set forth in  claim 4 , wherein the ribs and the recesses are provided in a circumferential region of the respective seating surface, spaced from a radially innermost edge of the respective peripheral flange. 
   
   
       6 . The suction muffler, as set forth in  claim 5 , wherein the adjacent and coplanar side walls of a rib and a consecutive recess in the same peripheral flange, axe disposed in a plane inclined in relation to the seating plane. 
   
   
       7 . The suction muffler, as set forth in  claim 1 , wherein each rib and each recess present a respective height corresponding to about 15% to 65% the width of the respective peripheral flange. 
   
   
       8 . The suction muffler, as set forth in  claim 1 , wherein the retention means comprises a peripheral sealing belt with a C-shaped profile and which is over-injected around the junction region of the mutual seated peripheral flanges, pressing the latter.