Insulated electrical drive unit for swivel drive of lamellas of lamellar window utilized for indoor swimming pool, has drive rotary shaft that is sealed opposite to passages by seals, where seals are subjected to oil on one side

摘要

The unit (1) has an electric motor (3) with a drive rotary shaft (4), where the electric motor is arranged in a closed protective housing (2). The drive rotary shaft is sealed opposite to protective housing passages (5, 5') by radial rotary shaft seals (6, 6'), where the radial rotary shaft seals are subjected to oil on one side. An oil reservoir (8) is provided between the radial rotary shaft seals and seals the drive rotary shaft opposite to the housing passages. The oil reservoir is arranged in an annular space (9) between radial rotary shaft sealing rings.