Co-Rotating Compressor

A compressor comprising:

• a shell assembly having a shell body, an end cap, and a partition, wherein the shell assembly defines a discharge-pressure chamber and a discharge-pressure space;
• a compression mechanism housed within the shell assembly and configured to compress a fluid to a discharge pressure;
• a driveshaft housed within the shell assembly, engaged with the compression mechanism, and fixed to rotate with at least a portion of the compression mechanism;
• and
• a motor housed within the shell assembly and configured to rotate the driveshaft,
• wherein the driveshaft includes a longitudinal aperture configured to receive the fluid at a suction pressure,
• wherein the shell body, the end cap, and the partition define the discharge-pressure space,
• wherein the compression mechanism and the motor are housed in the discharge-pressure space, and
• wherein the partition includes an aperture through which the fluid at the discharge pressure flows from the discharge-pressure chamber to the discharge-pressure space.

A compressor comprising:

• a shell assembly having a shell body, an end cap, and a partition;
• a compression mechanism housed within the shell assembly and configured to compress a fluid to a discharge pressure;
• a driveshaft housed within the shell assembly, engaged with the compression mechanism, and fixed to rotate with at least a portion of the compression mechanism;
• a bearing supporting the driveshaft;
• and
• a motor housed within the shell assembly and configured to rotate the driveshaft,
• wherein the driveshaft includes a longitudinal aperture configured to receive the fluid at a suction pressure,
• wherein the compression mechanism and the motor are housed in the suction-pressure chamber,
• wherein the shell body, the end cap, and the partition define the suction-pressure chamber,
• wherein a suction gas inlet fitting is attached to the shell assembly and is configured to provide a first portion of the fluid at the suction pressure to the longitudinal aperture, and
• wherein a second portion of the fluid at the suction pressure flows from the suction gas inlet fitting to the suction-pressure chamber through a flow path that extends through the bearing and radially outside of the longitudinal aperture.

A compressor comprising:

• a shell assembly;
• and
• a compression mechanism housed within the shell assembly and configured to compress a fluid to a discharge pressure;
• a driveshaft housed within the shell assembly, engaged with the compression mechanism, and fixed to rotate with at least a portion of the compression mechanism;
• a motor housed within the shell assembly and including a rotor that engages the driveshaft and is configured to rotate the driveshaft;
• and
• a fluid passage extending from a fluid inlet to a fluid outlet, the fluid passage extending through a longitudinal aperture in the driveshaft and the compression mechanism, and
• the fluid passage extending into the shell assembly and through the motor such that heat is transferred from the motor to fluid flowing through the longitudinal aperture in the driveshaft.