Side-channel blower for an internal combustion engine, comprising a wide interrupting gap

A side-channel blower for an internal combustion engine, the side-channel blower comprising:

• a flow housing;
• an impeller configured to rotate in the flow housing;
• a drive unit configured to drive the impeller;
• a housing wall comprising a radially delimiting housing wall, the housing wall being configured to radially surround the impeller;
• impeller blades arranged in a radially outer region of the impeller, the impeller blades being configured to open in a radially outward direction;
• a radial gap arranged between the impeller and the housing wall;
• an inlet;
• an outlet;
• two flow channels for a gas, a respective one of the two flow channels being respectively formed axially opposite to the impeller blades in the flow housing, the two flow channels being configured to connect the inlet to the outlet and to be fluidically connected to one another via intermediate spaces between the impeller blades;
• an interruption zone arranged between the outlet and the inlet, the interruption zone being configured to interrupt the two flow channels in a peripheral direction;
• and
• a radial interrupting gap arranged between the impeller and the radially delimiting housing wall in the entire interruption zone, the radial interrupting gap being 0.005 to 0.03times a diameter of the impeller,
• wherein,
• the interruption zone is further configured to extend over an angle which is between 20° and 40° of a total circumference of the flow housing.