Suction muffler for a hermetically enclosed refrigerant compressor

Abstract

The invention concerns a suction muffler ( 1 ) for a hermetically enclosed refrigerant compressor with a housing ( 2, 3 ) having, between an inlet ( 10 ) and an outlet ( 11 ), a first muffling chamber ( 8 ) in the flow direction and a second muffling chamber ( 9 ) in the flow direction, an insert ( 7 ) being arranged between the muffling chambers ( 8, 9 ), the insert ( 7 ) having a passage ( 18 ) that connects the muffling chambers ( 8, 9 ) to each other. It is endeavoured to obtain a certain degree of freedom when positioning the suction mufflers in the case of the compressor. For this purpose, the insert ( 7 ) has a tube ( 12 ) that is led through the second muffling chamber ( 9 ), one end of the tube ( 12 ) being led through the housing ( 2 ), the other end opening into the first muffling chamber ( 8 ).

1 . A suction muffler for a hermetically enclosed refrigerant compressor with a housing having, between an inlet and an outlet, a first muffling chamber in the flow direction and a second muffling chamber in the flow direction, an insert being arranged between the muffling chambers, the insert having a passage that connects the muffling chambers to each other, wherein the insert has a tube that is led through the second muffling chamber, one end of the tube being led through the housing, the other end opening into the first muffling chamber. 
     
     
         2 . The suction muffler according to  claim 1 , wherein the housing has an outwardly projecting first tube connection, the tube being led through said connection. 
     
     
         3 . The suction muffler according to  claim 1 , wherein the housing has an inwardly guided, second tube connection, through which the tube is led. 
     
     
         4 . The suction muffler according to  claim 3 , wherein the second tube connection has a length, which corresponds to at least 75% of the smallest distance between the insert and the housing in the area of the second tube connection. 
     
     
         5 . The suction muffler according to  claim 3 , wherein the insert has a jacket tube, which surrounds the second tube connection, at least on part of its length. 
     
     
         6 . The suction muffler according to  claim 5 , wherein the jacket tube has a length, which corresponds to at least 75% of the shortest distance between the insert and the housing in the area of the second tube connection. 
     
     
         7 . The suction muffler according to,  claim 1  wherein the tube projects through the insert. 
     
     
         8 . The suction muffler according to  claim 1 , wherein the passage between the muffling chambers is formed by a tube channel, which is arranged in the insert and projects over the insert on both sides. 
     
     
         9 . The suction muffler according to  claim 8 , wherein the tube channel and an outlet channel are arranged in series in the flow direction along the same axis. 
     
     
         10 . The suction muffler according to  claim 1 , wherein the tube has an opening, which lies opposite a curved bottom wall of the housing. 
     
     
         11 . The suction muffler according to  claim 10 , wherein in the first muffling chamber the housing has a gas guiding wall, which surrounds the tube on a part of its circumference. 
     
     
         12 . The suction muffler according to  claim 10 , wherein the curved bottom wall extends into a guiding surface, which is at least partly arranged in parallel with the axis.