Patent ID: 6416302
Filing Date: 2002-07-09
Classification: F04C

Abstract:
A screw compressor with two rotors mounted in a rotor housing (3) with parallel axes, that engage one another with screw-shaped teeth and tooth gaps, and that convey air during operation from a suction end toward a pressure end of the rotor housing (3) and in the process compress the air, with a gear housing (1) located at one end of the rotor housing (3) in which a drive shaft (17) is mounted with drive gears (19, 21) for the rotors (9, 11) and in which oil lubrication is provided for the drive gears, andwith a synchronizing gear (25, 27) that couples the rotors (9, 11) to run together in opposite directions synchronously without touching, characterized in that the gear housing (1) has the form of a disc-shaped pedestal and is provided with means (31, 33) to fasten the gear housing (1) to a support, that the rotor housing (3) freely projects out from the gear housing (1), that an oil supply container (7) that communicates with the gear housing (1) freely projects out from the gear housing (1) essentially parallel to the rotor housing (3), wherein between the rotor housing (3) and the oil supply container (7) is an air gap (41) that results in a thermal separation, that in a sealing arrangement (103, 105) that seals pressure side shaft journals (23, 29) of the rotors (9, 11) in the rotor housing (3) there is a breather space (107) that is connected to the atmosphere via a ventilation channel (109) designed into the rotor housing (3), and that the ventilation channel (109) opens up to the side of the rotor housing (3) facing the oil supply container (7) so that it is shielded against direct access by the oil supply container (7) mounted in front of it.