Refrigerant Compressor

Abstract

A hermetically encapsulated refrigerant compressor having a hermetically sealed compressor housing, in whose interior a piston-cylinder unit operates, whose cylinder housing ( 1 ) is closed using a valve plate ( 2 ) having a pressure hole ( 10 ) and a suction hole ( 16 ), and a suction channel and a pressure channel are provided. Preferably V-shaped sealing beads ( 23 ) or sealing projections ( 22 ) are provided in the valve plate ( 2 ) and the front face of the component ( 9 ) forming the suction channel is equipped along its suction contact edge ( 17 ) with sealing projections ( 22 ) or sealing beads ( 23 ) essentially corresponding to the V-shaped sealing beads ( 23 ) or sealing projections ( 22 ), the sealing projections ( 22 ) being implemented differently from the sealing beads ( 23 ) in their geometrical design and/or having a different volume.

1 . A hermetically encapsulated refrigerant compressor having a hermetically sealed compressor housing, in whose interior a piston-cylinder unit, which compresses a refrigerant, operates, whose cylinder housing ( 1 ) is closed using a valve plate ( 2 ) having a pressure hole ( 10 ) and a suction hole ( 16 ), and a suction channel and a pressure channel are provided, via which refrigerant is suctioned via a suction valve ( 32 ) into the suction hole ( 16 ) and is compressed via a pressure valve ( 15 ) from the pressure hole ( 10 ) in the pressure channel, the suction channel being formed by a channel-shaped component ( 9 ), which is connected sealingly along a suction contact edge ( 17 ) to the valve plate ( 2 ) and which connects the suction hole ( 16 ) to a preferably provided suction noise damper ( 3 ), wherein preferably V-shaped sealing beads ( 23 ) or sealing projections ( 22 ) are provided in the valve plate ( 2 ) and the front face of the component ( 9 ) forming the suction channel, which faces toward the valve plate ( 2 ), is equipped along its suction contact edge ( 17 ) with sealing projections ( 22 ) or sealing beads ( 23 ) essentially corresponding to the V-shaped sealing beads ( 23 ) or sealing projections ( 22 ), whereas the sealing projections ( 22 ) being implemented differently from the sealing beads ( 23 ) in their geometrical design and/or having a different volume. 
     
     
         2 . A hermetically encapsulated refrigerant compressor having a hermetically sealed compressor housing, in whose interior a piston-cylinder unit, which compresses a refrigerant, operates, whose cylinder housing ( 1 ) is closed using a valve plate ( 2 ) having a pressure hole ( 10 ) and a suction hole ( 16 ), and a suction channel and a pressure channel are provided, via which refrigerant is suctioned via a suction valve ( 32 ) into the suction hole ( 16 ) and is compressed via a pressure valve ( 15 ) from the pressure hole ( 10 ) in the pressure channel, the suction channel being formed by a channel-shaped component ( 9 ), which is connected sealingly to the valve plate ( 2 ) along a suction contact edge ( 17 ) and which connects the suction hole ( 16 ) to a preferably provided suction noise damper ( 3 ), wherein the pressure channel is formed by an independent component ( 8 ) completely enveloping the pressure channel, which is tightly connected to the valve plate ( 2 ) along a pressure contact edge ( 13 ) formed by an end section of the component ( 8 ), preferably V-shaped sealing beads ( 23 ) or sealing projections ( 22 ) being provided in the valve plate ( 2 ) and the front face of the component ( 8 ) forming the pressure channel, which faces toward the valve plate ( 2 ), being equipped along its pressure contact edge ( 13 ) with sealing projections ( 22 ) or sealing beads ( 23 ) essentially corresponding to the V-shaped sealing beads ( 23 ) or sealing projections ( 22 ), whereas the sealing projections ( 22 ) being implemented as different in their geometrical design from the sealing beads ( 23 ) and/or having a different volume. 
     
     
         3 . The hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the pressure hole ( 10 ) and the movable part of the pressure valve ( 15 ) are situated inside the area enclosed by the pressure contact edge ( 13 ). 
     
     
         4 . The hermetically encapsulated refrigerant compressor according to  claim 3 , wherein the ratio of the cross-sectional area of the pressure hole ( 10 ) to the area enclosed by the pressure contact edge ( 13 ) is greater than 1/12. 
     
     
         5 . The hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the area enclosed by the pressure contact edge ( 13 ) exceeds the area of the mobile parts of the pressure valve ( 15 ) by less than 50%. 
     
     
         6 . The hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the component ( 8 ) forming the pressure channel has a section ( 8   a ) directly adjoining the pressure hole ( 10 ) and leading away from the valve plate ( 2 ), and a further section ( 8   b ) adjoining this section ( 8   a ), which runs radially outward in relation to the cylinder hole, preferably at a distance to the valve plate ( 2 ) and preferably parallel thereto. 
     
     
         7 . The hermetically encapsulated refrigerant compressor according to  claim 6 , wherein the section ( 8   a ) leading away from the valve plate ( 2 ) and/or the further section ( 8   b ) of the pressure channel ( 8 ) is/are manufactured from plastic. 
     
     
         8 . The hermetically encapsulated refrigerant compressor according to  claim 6 , wherein an insulating material, preferably made of rubber or plastic, is situated between the further section ( 8   b ) and the valve plate ( 2 ). 
     
     
         9 . The hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the component ( 8 ) forming the pressure channel and the component ( 9 ) forming the suction channel are each manufactured in one piece and/or are preferably manufactured jointly in one piece, the two components ( 8 ,  9 ) manufactured jointly in one piece preferably being in contact along an intermediate wall, but at least along connecting webs. 
     
     
         10 . The hermetically encapsulated refrigerant compressor according to  claim 1 , wherein the pressure valve ( 15 ) closing the pressure hole ( 10 ) is fastened in the component ( 8 ) forming the pressure channel. 
     
     
         11 . The hermetically encapsulated refrigerant compressor according to  claim 1 , wherein a pressure chamber ( 8   a ), which does not fall below a predefined minimum volume, is provided in the component ( 8 ) forming the pressure channel. 
     
     
         12 . The hermetically encapsulated refrigerant compressor according to  claim 11 , wherein the pressure chamber ( 8   a ) is situated directly adjoining the pressure hole ( 10 ) in the component ( 8 ) forming the pressure channel. 
     
     
         13 . The hermetically encapsulated refrigerant compressor according to  claim 1 , wherein a clamping element ( 7 ) is provided, which clamps the valve plate ( 2 ) to the cylinder housing ( 1 ) along at least a section of its circumference, but preferably along the entire circumference. 
     
     
         14 . The hermetically encapsulated refrigerant compressor according to  claim 13 , wherein the clamping element ( 18 ) has an essentially J-shaped cross-section. 
     
     
         15 . The hermetically encapsulated refrigerant compressor according to  claim 13 , wherein the clamping element ( 7 ) is implemented as circular. 
     
     
         16 . The hermetically encapsulated refrigerant compressor according to  claim 13 , wherein one or more undercuts ( 27 ), which are engageable with an end section of the clamping element ( 7 ), are provided on the cylinder housing ( 1 ). 
     
     
         17 . The hermetically encapsulated refrigerant compressor according to  claim 16 , wherein the other end section of the clamping element ( 7 ) forms a first clamping section ( 7   b ), which clamps the valve plate ( 2 ) to the cylinder housing ( 1 ). 
     
     
         18 . The hermetically encapsulated refrigerant compressor according to  claim 13 , wherein the clamping element ( 7 ) has at least one further clamping section ( 7   a ), which clamps the components ( 8 ,  9 ) forming the pressure channel or the suction channel to the valve plate ( 2 ) or in the suction hole ( 16 ) and/or the pressure hole ( 10 ) respectively. 
     
     
         19 . The hermetically encapsulated refrigerant compressor according to  claim 13 , wherein a further clamping element ( 29 ) is provided, which is engageable on the clamping element ( 7 ) and clamps the components ( 8 ,  9 ) forming the pressure channel or the suction channel to the valve plate ( 2 ) or in the suction hole ( 16 ) and/or the pressure hole ( 10 ) respectively. 
     
     
         20 . The hermetically encapsulated refrigerant compressor according to  claim 1 , wherein separate fasteners ( 11 ) are provided or a separate fastener ( 7   b ) is provided for fastening the valve plate ( 2 ) to the cylinder housing ( 1 ). 
     
     
         21 . The hermetically encapsulated refrigerant compressor according to  claim 20 , wherein the separate fasteners are screws ( 11 ). 
     
     
         22 . The hermetically encapsulated refrigerant compressor according to  claim 20 , wherein a clamping element is provided, which is engageable on the cylinder housing ( 3 ) and clamps the components ( 8 ,  9 ) forming the pressure channel or the suction channel to the valve plate ( 2 ) or in the suction hole ( 16 ) and/or the pressure hole ( 10 ) respectively.