Scroll Compressor With Unloader Assembly

摘要

A compressor may include a shell, orbiting and non-orbiting scrolls, an unloader bushing assembly and a drive shaft. The unloader bushing assembly may include a drive bushing and a spring. The drive bushing includes an outer surface engaged with the orbiting scroll and may define an opening extending from a first bushing end to a second bushing end. The spring may include a body disposed within the opening of the drive bushing and may include first and second spring ends with at least a portion of the first spring end extending laterally from the body and overlapping the first bushing end. At least a portion of the second spring end may extend laterally from a body and overlap the second bushing end to secure the spring within the drive bushing. The drive shaft may include a crank pin disposed within the opening of the drive bushing and engaging the spring.

主权项

1. A compressor comprising:
an orbiting scroll; a non-orbiting scroll meshingly engaged with said orbiting scroll; a drive bushing having an outer surface engaged with said orbiting scroll and defining a longitudinally extending opening extending from a first longitudinal bushing end to a second longitudinal bushing end, said drive bushing including a ramped inner surface at least partially defining said longitudinally extending opening; a spring including a longitudinally extending body disposed within said longitudinally extending opening of said drive bushing and having first and second longitudinal spring ends, said first longitudinal spring end including a first tab extending from said body and out of said longitudinally extending opening, said second longitudinal spring end including a second tab extending from said body and out of said longitudinally extending opening, said first and second tabs retaining said spring within said drive bushing, said spring including a third tab disposed between said first and second tabs and extending outward from said body; and a drive shaft including an eccentric crank pin disposed within said longitudinally extending opening of said drive bushing and engaged with said spring, said ramped inner surface of said drive bushing is angled relative to a longitudinal axis of said eccentric crank pin, said body of said spring disposed between said ramped inner surface and said eccentric crank pin.