Patent ID: 6196816
Filing Date: 2001-03-06
Classification: F04C

Abstract:
A scroll compressor comprising:an orbiting scroll member having a base and a wrap extending from said base, said orbiting scroll wrap having a non-uniform thickness along its length;a non-orbiting scroll member having a base and a wrap extending from said base, said wrap of said non-orbiting scroll wrap also having a non-uniform thickness along its length, said orbiting and said non-orbiting scroll wraps interfitting to define a plurality of compression chambers;a suction port and a discharge port;said non-orbiting scroll communicating through a passage with a source of refrigerant, said passage extending through said base of said non-orbiting scroll into at least two injection ports at a location intermediate said suction and discharge ports, and said two injection ports associated with at least two of said compression chambers, said injection ports being unequal in at least one of size and position; andwherein one of said injection ports has a portion undercut into said non-orbiting scroll wrap.