Refrigerant Compressor

Abstract

A hermetically encapsulated refrigerant compressor, comprising a hermetically sealed compressor housing, in the interior of which a piston-cylinder unit works which compresses a refrigerant, whose cylinder housing ( 3 ) is sealed by means of a valve plate ( 16 ) comprising a pressure bore ( 25 ) and an intake bore ( 15 ), and an intake duct and a pressure duct are provided through which refrigerant is drawn into the intake bore ( 15 ) via a suction valve and is compressed via a pressure valve from the pressure bore ( 25 ) into the pressure duct, with a muffler ( 11 ) preferably being arranged in the intake duct. A clamping element ( 18 ) is provided which clamps the valve plate ( 16 ) at least along a section of its circumference, preferably along the entire circumference, against the cylinder housing ( 3 ).

1 . A hermetically encapsulated refrigerant compressor, comprising a hermetically sealed compressor housing, in the interior of which a piston-cylinder unit works which compresses a refrigerant, whose cylinder housing ( 3 ) is sealed by means of a valve plate ( 16 ) comprising a pressure bore ( 25 ) and an intake bore ( 15 ), and an intake duct and a pressure duct are provided through which refrigerant is drawn into the intake bore ( 15 ) via a suction valve and is compressed via a pressure valve from the pressure bore ( 25 ) into the pressure duct, with a muffler ( 11 ) preferably being arranged in the intake duct, wherein a clamping element ( 18 ) is provided which clamps the valve plate ( 16 ) at least along a section of its circumference, preferably along the entire circumference, against the cylinder housing ( 3 ). 
   
   
       2 . A hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the clamping element ( 18 ) comprises a substantially J-shaped cross section. 
   
   
       3 . A hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the clamping element ( 18 ) is arranged in the form of an annulus. 
   
   
       4 . A hermetically encapsulated refrigerant compressor according to  claim 1 , wherein undercuts ( 19 ) are provided on the cylinder housing ( 3 ) which can be latched together with an end section of the clamping element ( 18 ). 
   
   
       5 . A hermetically encapsulated refrigerant compressor according to  claim 4 , wherein the other end section of the clamping element ( 18 ) forms a first clamping leg ( 18   a ) which clamps the valve plate ( 16 ) against the cylinder housing ( 3 ). 
   
   
       6 . A hermetically encapsulated refrigerant compressor according to  claim 5 , wherein a carrier element forming the pressure valve ( 33 )—preferably in the form of a pressure leaf spring—which rests in a planar manner on the valve plate ( 16 ) is arranged between the clamping legs ( 18   a ) and the valve plate ( 16 ). 
   
   
       7 . A hermetically encapsulated refrigerant compressor according to  claim 5 , wherein a sealing element ( 34 ) which rests in a planar manner on the valve plate ( 16 ) is arranged between the valve plate ( 16 ) and the clamping legs ( 18   a ). 
   
   
       8 . A hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the cylinder housing comprises a shoulder ( 27 ) in which the valve plate ( 16 ) is sunk at least partly. 
   
   
       9 . A hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the surface of the valve plate ( 16 ) averted from the piston ( 4 ) is flush with the cylinder housing ( 13 ). 
   
   
       10 . A hermetically encapsulated refrigerant compressor according to  claim 5 , wherein the clamping element ( 18 ) comprises at least one further clamping leg ( 18   b ) which clamps a component ( 23 ,  24 ) forming the pressure duct or intake duct against the valve plate ( 16 ) or in the intake bore ( 15 ) and/or the pressure bore ( 25 ). 
   
   
       11 . A hermetically encapsulated refrigerant compressor according to  claim 1 , wherein a further clamping element ( 30 ) is provided which can be latched to the clamping element ( 18 ) and clamps the component ( 23 ,  24 ) forming the pressure duct or the intake duct against the valve plate ( 16 ) or in the intake bore ( 15 ) and/or the pressure bore ( 25 ). 
   
   
       12 . A hermetically encapsulated refrigerant compressor according to  claim 5 , wherein the clamping element ( 18 ) comprises at least one further clamping leg ( 18   b ) which clamps the cylinder cover ( 17 ) against the valve plate ( 16 ). 
   
   
       13 . A hermetically encapsulated refrigerant compressor according to  claim 5 , wherein a further clamping element ( 30 ) is provided which can be latched to the clamping element ( 18 ) and clamps the cylinder cover ( 17 ) against the valve plate ( 16 ).