Refrigerant compressor

Abstract

A hermetically encapsulated refrigerant compressor which comprises a hermetically sealed compressor housing ( 1 ), in the interior of which a piston-cylinder unit which compresses a refrigerant and a suction pipe ( 2 ) and a pressure pipe ( 3 ) are provided, with refrigerant flowing via the suction pipe ( 2 ) to the piston-cylinder unit and the refrigerant compressed by the piston-cylinder unit being conveyed out of the compressor housing ( 1 ) via the pressure pipe ( 3 ), with connection openings ( 5 ) for the suction pipe ( 2 ) and the pressure pipe ( 3 ) being provided on the compressor housing ( 1 ), with the connection of the suction pipe ( 2 ) and pressure pipe ( 3 ) to the connection openings ( 5 ) occurring in a hermetically tight manner by means of a connection apparatus ( 9 ) and with the connection apparatus ( 9 ) comprising a preferably sleeve-like body element ( 8 ) and at least one spacer element ( 7 ) which spaces the body element ( 8 ) from the suction pipe ( 2 )/pressure pipe ( 3 ). It is provided in accordance with the invention that the body element ( 8 ) is attached to an outside ( 13 ) of the compressor housing ( 1 ) outside of the connection opening ( 5 ) by enclosing the same in a hermetically sealing manner.

1 . A hermetically encapsulated refrigerant compressor which comprises a hermetically sealed compressor housing ( 1 ), in the interior of which a piston-cylinder unit which compresses a refrigerant and a suction pipe ( 2 ) and a pressure pipe ( 3 ) are provided, with refrigerant flowing via the suction pipe ( 2 ) to the piston-cylinder unit and the refrigerant compressed by the piston-cylinder unit being conveyed out of the compressor housing ( 1 ) via the pressure pipe ( 3 ), with connection openings ( 5 ) for the suction pipe ( 2 ) and the pressure pipe ( 3 ) being provided on the compressor housing ( 1 ) which enable the overflow of the refrigerant from the outside of the compressor housing ( 1 ) into the interior of the compressor housing ( 1 ) and vice-versa, with the connection of the suction pipe ( 2 ) or pressure pipe ( 3 ) to the connection openings ( 5 ) occurring in a hermetically tight manner by means of a connection apparatus ( 9 ), with the connection apparatus ( 9 ) comprising a preferably sleeve-like body element ( 8 ) and at least one spacer element ( 7 ) which spaces the body element ( 8 ) from the suction pipe ( 2 )/pressure pipe ( 3 ), wherein the body element ( 8 ) is attached to an outside ( 13 ) of the compressor housing ( 1 ) outside of the connection opening ( 5 ) by enclosing the same in a hermetically sealing manner. 
   
   
       2 . A hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the spacer element ( 7 ) consists of a material that has a lower thermal conductivity than the body element ( 8 ). 
   
   
       3 . A hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the body element ( 8 ) and preferably the spacer element ( 7 ) is made of austenitic steel. 
   
   
       4 . A hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the spacer element ( 7 ) is made of foamed glass, plastic or a ceramic material. 
   
   
       5 . A hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the spacer element ( 7 ) is arranged between body element ( 8 ) and the suction pipe ( 2 )/pressure pipe ( 3 ) and encloses the suction pipe ( 2 )/pressure pipe ( 3 ) in a hermetically sealing manner. 
   
   
       6 . A hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the spacer element ( 7 ) is a section, preferably an end section of the body element ( 8 ), which extends under an angular inclination, preferably a right angle, relative to the axis of the suction pipe ( 2 )/pressure pipe ( 3 ) and encloses the suction pipe ( 2 )/pressure pipe ( 3 ) in a hermetically sealing manner. 
   
   
       7 . A hermetically encapsulated refrigerant compressor according to  claim 6 , wherein the section or end section of the body element ( 8 ) encloses the suction pipe ( 2 )/pressure pipe ( 3 ) at a section of the circumference which lies outside of the connection opening ( 5 ) or outside of cross-sectional wall surface of the compressor housing ( 1 ) which is projected in the normal direction onto the circumferential surface of the body element ( 8 ). 
   
   
       8 . A hermetically encapsulated refrigerant compressor according to  claim 6 , wherein the section or end section of the body element ( 8 ) which is arranged as a spacer element ( 7 ) ends in an annular opening. 
   
   
       9 . A hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the body element ( 8 ) has a contact section ( 10 ) and is fastened with the same to the outside ( 13 ) of the compressor housing ( 1 ), with the diameter of the connection opening ( 5 ) preferably being larger than the outer diameter of the section of the body element ( 8 ) which is guided through the connection opening ( 5 ), so that an abutting surface area ( 11 ) of the connection opening ( 5 ) is spaced from the body element ( 8 ). 
   
   
       10 . A hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the body element ( 8 ) and/or the spacer element ( 7 ) are arranged in several parts.