Compressor including end cap having internal features and methods of assembling the same

A compressor comprising:

• a main bearing housing comprising:
• a plurality of circumferentially-extending slots defined on a radial outer surface of the main bearing housing, and
• a main bearing alignment hole extending from a top surface of the main bearing housing and partially through the main bearing housing;
• a scroll assembly positioned in engagement with the main bearing housing, the scroll assembly comprising:
• a non-orbiting scroll comprising a plurality of flanges positioned on a radial outer surface of the non-orbiting scroll;
• a scroll alignment hole defined by and extending through the scroll assembly, wherein each flange of the non-orbiting scroll engages a corresponding one of the slots on the main bearing housing to connect the main bearing housing to the scroll assembly and axially constrain the main bearing housing and the scroll assembly;
• and
• an orbiting scroll meshingly engaged with the non-orbiting scroll;
• and
• an alignment pin extending through the scroll alignment hole and into the main bearing alignment hole to align the main bearing housing and the scroll assembly.

A method of assembling a compressor, the method comprising:

• positioning a main bearing housing into engagement with an annular axial ledge of an upper end of a compressor shell;
• engaging a slot on the main bearing housing with a flange on a scroll assembly;
• aligning a main bearing alignment hole on the main bearing housing with a scroll alignment hole on the scroll assembly;
• and
• inserting an alignment pin through the scroll alignment hole and into the main bearing alignment hole to inhibit relative rotation between the non-orbiting scroll and the main bearing housing;
• aligning an internal feature on an end cap with the scroll assembly;
• compressing the main bearing housing and the scroll assembly between the internal feature formed on the end cap and the annular axial ledge of the compressor shell;
• and
• attaching the end cap to the upper end of the compressor shell while the main bearing housing and the scroll assembly are compressed with the internal feature of the end cap and the axial ledge such that the attachment of the end cap to the compressor shell retains a compressive force against the main bearing housing and the scroll assembly.