Hermetically encapsulated refrigerant compressor

Abstract

The hermetically encapsulated refrigerant compressor includes a cylinder, a reciprocating piston arranged in the cylinder and having a reciprocating piston axis, a valve plate comprising a suction valve opening and a discharge valve, a cylinder head on the side of the valve plate facing away from the cylinder, a cylinder head cover which has an outlet for compressed refrigerant, and a sound absorber. On the side of the valve plate facing away from the cylinder, a nozzle is arranged as an inlet for refrigerant to be drawn in, the nozzle having a first end arranged at the suction valve opening and a second end. The nozzle is inclined at a maximum angle of inclination of between −45° and +45° in relation to the reciprocating piston axis. The sound absorber has a housing with a suction opening into which the second end of the nozzle leads.

1 .- 8 . (canceled) 
     
     
         9 . A hermetically encapsulated refrigerant compressor comprising a cylinder formed in a cylinder block and having an open end, a reciprocating piston arranged in the cylinder and having a reciprocating piston axis along which the reciprocating piston reciprocates, a valve plate comprising a suction valve opening and a discharge valve, the valve plate being attached to the cylinder block at the open end of the cylinder, a cylinder head on the side of the valve plate facing away from the cylinder, the cylinder head defining a cylinder head space at least above a portion of the valve plate which contains the discharge valve, the cylinder head comprising a cylinder head cover which has an outlet for compressed refrigerant,
 wherein, on the side of the valve plate facing away from the cylinder, a nozzle is arranged as an inlet for refrigerant to be drawn in, the nozzle having a first end leading to the suction valve opening and a second end opposite to the first end, with the nozzle being inclined at a maximum angle of inclination of between −45° and +45° in relation to the reciprocating piston axis, and   wherein the refrigerant compressor has a sound absorber arranged outside of the cylinder head and comprising a housing, the housing defining a cavity and a suction opening for refrigerant to be drawn into the cavity and a discharge opening for refrigerant to be discharged from the cavity being formed in the housing, the nozzle passing through the cylinder head cover or, if the cylinder head covers only a portion of the valve plate which contains the discharge valve, the nozzle being arranged outside of the cylinder head space, the second end of the nozzle leading to the cavity of the sound absorber through the discharge opening.   
     
     
         10 . A refrigerant compressor according to  claim 9 , wherein the nozzle comprises a pipe section or a conical hollow body. 
     
     
         11 . A refrigerant compressor according to  claim 9 , wherein the nozzle has a curved or kinked configuration, with the maximum angle of inclination of any portion of the nozzle ranging between −45° and +45° in relation to the reciprocating piston axis. 
     
     
         12 . A refrigerant compressor according to  claim 9 , wherein the nozzle is integral with the cylinder head cover. 
     
     
         13 . A refrigerant compressor according to  claim 9 , wherein the nozzle has a shape which essentially corresponds to the cross-sectional area of the suction valve opening, in particular an essentially circular or elliptical shape. 
     
     
         14 . A refrigerant compressor according to  claim 9 , wherein the housing of the sound absorber is made of a synthetic material. 
     
     
         15 . A refrigerant compressor according to  claim 9 , wherein the discharge opening is arranged in a side wall of the housing of the sound absorber, with the discharge opening being arranged in the upper half of a side wall of the housing of the sound absorber. 
     
     
         16 . A refrigerant compressor according to  claim 9 , wherein the discharge opening is arranged in a top side or a bottom side of the housing of the sound absorber.