Screw compressor having rotors mounted on one side

A screw compressor assembly for compressing a fluid medium, the screw compressor assembly comprising:

• a drive unit configured to drive a first shaft and a second shaft, the first shaft having a first end and a second end, the first end configured to be driven by the drive unit;
• a compressor unit including a compressor housing, a housing lid coupled to the compressor housing, a main rotor, and a subsidiary rotor, the first shaft rotatably driving the main rotor and the second shaft rotatably driving the subsidiary rotor;
• and
• a bearing unit disposed between the drive unit and the compressor unit, the bearing unit housing the first shaft and the second shaft and including a pair of gearwheels, each one of the pair of gearwheels respectively coupled to the first shaft and the second shaft and configured to drive the second shaft with respect to the first shaft,
• wherein the housing lid includes an outlet through which the fluid medium is discharged, and wherein the compressor unit includes cooling channels carrying a cooling agent.

A screw compressor assembly for compressing a fluid medium, the screw compressor assembly comprising:

• a drive unit configured to drive a first shaft and a second shaft, the first shaft having a first end and a second end, the first end configured to be driven by the drive unit;
• a compressor unit including a compressor housing, a housing lid coupled to the compressor housing, a main rotor, and a subsidiary rotor, the first shaft rotatably driving the main rotor and the second shaft rotatably driving the subsidiary rotor;
• and
• a bearing unit disposed between the drive unit and the compressor unit, the bearing unit housing the first shaft and the second shaft and including a pair of gearwheels, each one of the pair of gearwheels respectively coupled to the first shaft and the second shaft and configured to drive the second shaft with respect to the first shaft,
• wherein the housing lid includes an outlet through which the fluid medium is discharged, and wherein the compressor unit includes cooling channels carrying a cooling agent, wherein at least a portion of the cooling channels extend into the housing lid and are disposed around the outlet.

A screw compressor assembly for compressing a fluid medium, the screw compressor assembly comprising:

• a drive unit configured to drive a first shaft and a second shaft, the first shaft having a first end and a second end, the first end configured to be driven by the drive unit;
• a compressor unit including a compressor housing, a housing lid coupled to the compressor housing, a cooling jacket, a main rotor, and a subsidiary rotor, the first shaft rotatably driving the main rotor and the second shaft rotatably driving the subsidiary rotor;
• and
• a bearing unit disposed between the drive unit and the compressor unit, the bearing unit housing the first shaft and the second shaft and including a pair of gearwheels, each one of the pair of gearwheels respectively coupled to the first shaft and the second shaft and configured to drive the second shaft with respect to the first shaft,
• wherein the housing lid includes an outlet through which the fluid medium is discharged, and wherein the cooling jacket is disposed around the compressor housing and defines cooling channels carrying a cooling agent, wherein at least a portion of the cooling channels extend into the housing lid and are disposed around the outlet.