EP3653275

The invention provides a counter-current swimming device for a swimming pool, the device comprising:- a lower housing part having an inlet,- an upper housing part, connected to the lower housing part- an outlet nozzle connected to the upper housing part, so that the lower housing part, the upper housing part and the outlet nozzle form a flow channel,wherein the device further comprises:- a propeller screw configured to, when the device is installed in a swimming pool, accelerate water into the inlet, and- a motor coupled to the propeller screw,wherein the upper housing part has an upper housing part entrance and an upper housing part exit, wherein the upper housing part entrance has a larger cross section than the upper housing part exit. The coupling between the motor and the propeller screw may be a magnetic coupling with permanent magnets on the propeller side of the coupling.