Air conditioning compressor for a vehicle and vehicle

Abstract

The invention relates to an air conditioning compressor ( 1 ) for a vehicle ( 24 ), in particular a motor vehicle ( 25 ), having a compression chamber ( 18 ) having an inlet ( 7 ) for a cooling medium to be compressed and an outlet ( 8 ) for the compressed cooling medium, wherein a wall of the compression chamber ( 18 ) is formed at least in sections by a translationally displaceable piston ( 3 ). According to the invention, the end of the piston ( 3 ) facing away from the compression chamber forms at least one wall region of a control pressure chamber ( 19 ). The invention further relates to a vehicle having an air conditioning apparatus.

1 . An air-conditioning compressor ( 1 ) for a vehicle ( 24 ), having a compression chamber ( 18 ) which has an inlet ( 7 ) for a cooling medium to be compressed and an outlet ( 8 ) for the compressed cooling medium, wherein a wall of the compression chamber ( 18 ) is formed at least in regions by a piston ( 3 ) which is displaceable in a translatory fashion, characterized in that the piston ( 3 ) forms, at an end facing away from the compression chamber, at least one wall region of a control pressure chamber ( 19 ). 
     
     
         2 . The air-conditioning compressor as claimed in  claim 1 , characterized in that at least one of the inlet ( 7 ) and the outlet ( 9 ) is formed at an end region ( 6 ), which is remote from the piston ( 3 ), of the compression chamber ( 18 ). 
     
     
         3 . The air-conditioning compressor as claimed in  claim 1 , characterized in that at least one of the inlet ( 7 ) and the outlet ( 8 ) has in each case one check valve ( 9 ,  10 ). 
     
     
         4 . The air-conditioning compressor as claimed in  claim 1 , characterized in that the piston ( 3 ) has at least none restoring spring ( 20 ). 
     
     
         5 . The air-conditioning compressor as claimed in  claim 4 , characterized in that the restoring spring ( 20 ) is formed as a helical spring ( 21 ) and arranged in the compression chamber ( 18 ). 
     
     
         6 . The air-conditioning compressor as claimed in  claim 1 , characterized in that the control pressure chamber ( 19 ) is incorporated into a hydraulic circuit ( 29 ). 
     
     
         7 . The air-conditioning compressor as claimed in  claim 6 , characterized in that the control pressure chamber ( 19 ) has a high-pressure port ( 12 ) and a low-pressure port ( 13 ) for the hydraulic circuit ( 29 ). 
     
     
         8 . The air-conditioning compressor as claimed in  claim 1 , characterized in that at least one of the low-pressure and the high-pressure port ( 12 ,  13 ) has in each case one switchable valve ( 14 ,  15 ). 
     
     
         9 . A vehicle ( 24 ), having a drive device ( 26 ) and having an air-conditioning device ( 31 ) which has an air-conditioning compressor ( 1 ) according to  claim 1 . 
     
     
         10 . The vehicle as claimed in  claim 9 , characterized in that the control pressure chamber ( 19 ) is incorporated into a hydraulic circuit ( 29 ) of the drive device ( 26 ). 
     
     
         11 . The air-conditioning compressor as claimed in  claim 1 , characterized in that the inlet ( 7 ) and the outlet ( 9 ) are formed at an end region ( 6 ), which is remote from the piston ( 3 ), of the compression chamber ( 18 ). 
     
     
         12 . The air-conditioning compressor as claimed in  claim 1 , characterized in that the inlet ( 7 ) and the outlet ( 8 ) have in each case one check valve ( 9 ,  10 ). 
     
     
         13 . The air-conditioning compressor as claimed in  claim 1 , characterized in that the low-pressure and the high-pressure port ( 12 ,  13 ) have in each case one switchable valve ( 14 ,  15 ).