Linear compressor

Abstract

The invention concerns a linear compressor ( 1 ) with a piston ( 16 ) reciprocating in a cylinder ( 8 ), a linear motor acting upon the piston ( 16 ) and a resonance spring arrangement ( 5 ) connected with the piston ( 16 ). It is endeavoured to reliably avoid damaging the compressor during operation. For this purpose, the resonance spring arrangement ( 5 ) has a fixed stop ( 48 ) allocated to the upper dead point of the piston ( 16 ).

1 . Linear compressor with a piston reciprocating in a cylinder, a linear motor acting upon the piston and a resonance spring arrangement connected with the piston, characterised in that the resonance spring arrangement ( 5 ) has a fixed stop ( 48 ) allocated to the upper dead point of the piston ( 16 ).  
   
   
       2 . Linear compressor according to  claim 1 , characterised in that the cylinder ( 8 ) and the stop ( 48 ) are displaceable in relation to each other in the movement direction of the piston ( 16 ) during the mounting of the linear compressor ( 1 ).  
   
   
       3 . Linear compressor according to  claim 1  or  2 , characterised in that the resonance spring arrangement ( 5 ) has at least one plate spring ( 33 ), which gradually comes to rest on the stop ( 48 ), when the piston ( 16 ) moves in the direction of its upper dead point.  
   
   
       4 . Linear compressor according to one of the  claims 1  to  3 , characterised in that the stop is located in a stop housing, whose extension is adapted to the cross-section of the linear motor.  
   
   
       5 . Linear compressor according to  claim 4 , characterised in that the plate spring ( 33 ) has in the unloaded state a predetermined distance to the stop housing ( 37 ).  
   
   
       6 . Linear compressor according to one of the  claims 1  to  5 , characterised in that the stop ( 48 ) has a convex contact surface.  
   
   
       7 . Linear compressor according to one of the  claims 3  to  6 , characterised in that the plate spring ( 33 ) has at least one arched arm ( 41 ).  
   
   
       8 . Linear compressor according to  claim 7 , characterised in that the plate spring ( 33 ) has several arched arms ( 41 ), which are located and mutually interlocked in the form of several spirals.  
   
   
       9 . Linear compressor according to  claim 7  or  8 , characterised in that the plate spring ( 33 ) has an annular outer section ( 35 ), from which the arms ( 41 ) extend radially inwards.  
   
   
       10 . Linear compressor according to  claim 9 , characterised in that the outer section ( 35 ) has fixing openings ( 40 ), slots ( 42 ) separating adjacent arms ( 41 ) from each other extending into an area between the fixing openings ( 40 ).  
   
   
       11 . Linear compressor according to one of the  claims 3  to  10 , characterised in that the plate spring ( 33 ) and the stop housing ( 37 ) have an auxiliary positioning device ( 46 ,  47 ), which ensures an allocation by angle of the plate spring ( 33 ) and the stop housing ( 37 ) in relation to each other.  
   
   
       12 . Linear compressor according to one of the  claims 3  to  11 , characterised in that a central area ( 34 ) of the plate spring ( 33 ) has an opening ( 39 ), through which is guided an element ( 28 ) connected with the piston ( 16 ).  
   
   
       13 . Linear compressor according to one of the  claims 1  to  12 , characterised in that the stop ( 48 ) is located on a side of the linear motor facing away from the cylinder ( 8 ).