Air intake device for an extractor hood, comprising - a fan housing, having an air intake opening and an air outlet opening, - a motor arranged inside the fan housing having a drivable motor shaft which can rotate around a central axis and having an axial front face and an outer circumferential face, - an extraction fan arranged inside the fan housing, which has a reception recess with a bottom surface and an inner circumferential face for plugging the extraction fan onto and for removing the extraction fan from said motor shaft, - a latching connection device for detachably connecting said extraction fan and said motor shaft and - a rotary driving device for rotary driving said extraction fan by means of the rotatable motor shaft, characterized in that - said latching connection device has at least one spring-loaded latching projection at either the outer circumferential face of said motor shaft or at the inner circumferential face of said reception recess of said extraction fan, and a circumferential rear-engaging projection provided for rear-engaging through the at least one latching projection, at either the inner circumferential face of said reception recess of said extraction fan or at the outer circumferential face of said motor shaft, and - said rotary driving device has an engaging projection, which is either arranged at said motor shaft or in said reception recess of said extraction fan, and a freewheeling path extending longitudinally along a partial circular line for said engaging projection, being formed either inside the reception recess of said extraction fan or at said motor shaft, and along which said engaging projection can be moved when the extraction fan is plugged onto the motor shaft and when said motor shaft and said extraction fan are moving relatively rotationally, - wherein said freewheeling path has a movement restricting surface for receiving the engaging projection and thus for driving said extraction fan by means of the rotatable motor shaft. - a fan housing, having an air intake opening and an air outlet opening, - a motor arranged inside the fan housing having a drivable motor shaft which can rotate around a central axis and having an axial front face and an outer circumferential face, - an extraction fan arranged inside the fan housing, which has a reception recess with a bottom surface and an inner circumferential face for plugging the extraction fan onto and for removing the extraction fan from said motor shaft, - a latching connection device for detachably connecting said extraction fan and said motor shaft and - a rotary driving device for rotary driving said extraction fan by means of the rotatable motor shaft, characterized in that - said latching connection device has at least one spring-loaded latching projection at either the outer circumferential face of said motor shaft or at the inner circumferential face of said reception recess of said extraction fan, and a circumferential rear-engaging projection provided for rear-engaging through the at least one latching projection, at either the inner circumferential face of said reception recess of said extraction fan or at the outer circumferential face of said motor shaft, and - said rotary driving device has an engaging projection, which is either arranged at said motor shaft or in said reception recess of said extraction fan, and a freewheeling path extending longitudinally along a partial circular line for said engaging projection, being formed either inside the reception recess of said extraction fan or at said motor shaft, and along which said engaging projection can be moved when the extraction fan is plugged onto the motor shaft and when said motor shaft and said extraction fan are moving relatively rotationally, - wherein said freewheeling path has a movement restricting surface for receiving the engaging projection and thus for driving said extraction fan by means of the rotatable motor shaft.