Discharge silencer for a hermetically encapsulated refrigerant compressor

Abstract

The invention relates to a discharge silencer ( 6 ) for a hermetically encapsulated refrigerant compressor ( 1 ), which comprises a piston/cylinder unit ( 4 ) that compresses a refrigerant and has a compression chamber ( 3 ) and which is enclosed by a hermetically sealed compressor housing ( 2 ), wherein the compression chamber ( 3 ) is supplied with refrigerant coming from an evaporator through a suction silencer ( 5 ) and discharges refrigerant compressed by the piston/cylinder unit ( 4 ) into a pressure line ( 7 a, b ) through the discharge silencer ( 6 ). According to the invention, the discharge silencer ( 6 ) comprises a main body ( 8 ), on which an inlet flange ( 9 ) for the refrigerant coming from the piston/cylinder unit ( 4 ) is arranged, and an outlet channel ( 10 ), through which the refrigerant can be led into a pressure line ( 7 a, b ) that supplies a condenser with compressed refrigerant. The main body ( 8 ) has four side walls ( 11, 12, 13, 14 ), which each have a longitudinal extension and a width extension that is shorter than the longitudinal extension, wherein the two side walls ( 11, 12 ) having larger areas are opposite each other and are curved in the same direction when viewed in a direction parallel to the longitudinal extension.

1 - 11 . (canceled) 
     
     
         12 . Hermetically encapsulated refrigerant compressor ( 1 ), having a piston/cylinder unit ( 4 ) that compresses a refrigerant and has a compression chamber ( 3 ), and is driven by an electric motor ( 25 ), as well as a hermetically sealed compressor housing ( 2 ) that surrounds this unit, wherein the compression chamber ( 3 ) is supplied with a refrigerant coming from an evaporator, by way of a suction silencer ( 5 ), and discharges compressed refrigerant into a pressure line ( 7   a, b ), by way of a discharge silencer ( 6 ), by means of the piston/cylinder unit ( 4 ), wherein the discharge silencer ( 6 ) surrounds and sheathes an edge or bend ( 23 ) of the electric motor ( 25 ) or a part of it and/or of the piston/cylinder unit ( 4 ), seen in the viewing direction of the edge or bend ( 23 ), wherein the discharge silencer ( 6 ) has a basic body ( 8 ) on which an inlet flange ( 9 ) for the refrigerant coming from the piston/cylinder unit ( 4 ) is disposed, and an outlet channel ( 10 ), by way of which the refrigerant can be transferred to a pressure line ( 7   a, b ) that supplies a condenser with compressed refrigerant, and which basic body ( 8 ) has four side walls ( 11 ,  12 ,  13 ,  14 ), each having a longitudinal expanse and a shorter width expanse, in comparison with the former, wherein the two side walls ( 11 ,  12 ) that have a larger surface area lie opposite one another and are configured to be curved, in the same direction, in each instance, when viewed in a viewing direction parallel to the longitudinal expanse; wherein the curvature of the one of the side walls ( 12 ) that is larger in surface area takes place discontinuously, in the form of at least two partial surfaces ( 12   a ,  12   b ) disposed at an angle relative to one another; wherein the discharge silencer ( 6 ) is attached to the piston/cylinder unit ( 4 ) in such a manner that the edge ( 15 ) formed between the at least two partial surfaces ( 12   a ,  12   b ) runs directly in front of the edge or bend ( 23 ) of the electric motor ( 25 )) and/or of the piston/cylinder unit ( 4 ); and wherein the curvature of the other of the side walls ( 11 ) that is larger in surface area corresponds, at least in certain sections, to the curvature of the compressor housing ( 2 ) in the region of the placement of the discharge silencer within the compressor housing ( 2 ), seen in a viewing direction along the axis ( 27 ) of the crankshaft ( 26 ) of the electric motor ( 25 ). 
     
     
         13 . Hermetically encapsulated refrigerant compressor ( 1 ) according to  claim 12 , wherein the edge or bend ( 23 ) is an edge of the stator sheet-metal package ( 24 ) of the electric motor ( 25 ). 
     
     
         14 . Hermetically encapsulated refrigerant compressor ( 1 ) according to  claim 12 , wherein the curvature of the other side wall ( 11 ) that is larger in surface area takes place continuously, preferably following the shape of an arc.