Patent ID: 11879464
Assignee: MAHLE INTERNATIONAL GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A scroll-type electric compressor configured to compress a refrigerant, comprising:
a housing defining an intake volume and a discharge volume;
a refrigerant inlet port coupled to the housing and configured to introduce the refrigerant to the intake volume;
a refrigerant outlet port coupled to the housing and configured to allow compressed refrigerant to exit the scroll-type electric compressor from the discharge volume;
a drive shaft located within the housing, having first and second ends and defining a center axis, the drive shaft being centered on the center axis;
a concentric protrusion located at the second end of the drive shaft and being centered on the center axis and extending away from the drive shaft along the center axis, the second end of the drive shaft including a drive pin aperture having an offset axis, the offset axis being parallel to the center axis;
a motor located within the housing and coupled to the drive shaft to controllably rotate the drive shaft about the center axis;
a drive pin located within the drive pin aperture and extending away from the drive shaft, the drive pin being centered on the offset axis;
a compression device including a fixed scroll located within, and being fixed relative to, the housing and an orbiting scroll coupled to the drive shaft, the orbiting scroll and the fixed scroll forming compression chambers for receiving the refrigerant from the intake volume and compressing the refrigerant as the drive shaft is rotated about the center axis, the orbiting scroll having an inner circumferential surface;
a swing-link mechanism coupled to the drive shaft and having first and second apertures for receiving the concentric protrusion and the drive pin and an outer circumferential surface; and,
a ball bearing positioned between, and adjacent to each of, the inner circumferential surface of the orbiting scroll and the outer circumferential surface of the swing-link mechanism, the drive shaft, drive pin, orbiting scroll and swing-link mechanism being arranged to cause the orbiting scroll to rotate about the center axis in an eccentric orbit.