Dual-rotor motor having heat dissipation

An electric motor comprising:

• a pot-shaped outer rotor;
• an inner rotor;
• and
• a stator configured to carry excitation coils, wherein the stator is formed as a hollow cylinder and engages in the outer rotor and is connected with its front face to a housing or to a part of the electric motor fixedly connected to the housing, the stator comprising yokes containing the excitation coils and supports arranged between the yokes;
• wherein the electric motor has a water cooling system and an air cooling system, wherein the water cooling system is configured to cool the excitation coils, the housing, or both;
• wherein the supports comprise at least one channel for water cooling in a region between adjacent pole shoes of the yokes, the at least one channel including an inflow channel, a return channel, and a connecting channel configured to connect the inflow channel and the return channel.