Side-channel compressor (1) for a fuel cell system (37) for conveying and/or compressing a gas, in particular hydrogen, having a housing (3), wherein the housing (3) has a housing upper part (7) and a housing lower part (8), having a compressor chamber (30) which is situated in the housing (3) and which has at least one encircling side channel (19), having a compressor wheel (2) which is situated in the housing (3) and which is disposed so as to be rotatable about a rotation axis (4), wherein the compressor wheel (2) on the circumference thereof has blades (5) which are disposed in the region of the compressor chamber (30), and having a gas inlet opening (14) and a gas outlet opening (16) which are in each case configured on the housing (3) and which by way of the compressor chamber (30), in particular the at least one side channel (19), are fluidically connected to one another. According to the invention, the compressor wheel (4) herein has at least one connection bore (21) which in a radial manner to the rotation axis (4) runs through at least one of the blades (5) and which connects an internal chamber (44) of the side-channel compressor (1) to a separation chamber (34).
展开▼
