Electric compressor with scroll bearing injection orifice

A scroll-type electric compressor having a central axis and being 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;
• an inverter section including:
• an inverter housing,
• an inverter back cover connected to the inverter housing and forming an inverter cavity,
• an inverter module mounted inside the inverter cavity and adapted to convert direct current electrical power to alternating current electrical power;
• a motor section including:
• a motor housing forming a motor cavity and being mounted to the inverter housing,
• a drive shaft located within the motor housing, having first and second ends and defining the central axis, and a motor located within the motor housing to controllably rotate the drive shaft about the central axis, and,
• 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 central axis, the orbiting scroll having a first side and a second and an oil aperture through the orbiting scroll from the first side to the second side,
• a swing-link mechanism coupled to the drive shaft,
• a ball bearing positioned between, and adjacent to each of the orbiting scroll and the swing-link mechanism, the drive shaft, orbiting scroll and swing-link mechanism being arranged to cause the orbiting scroll to orbit the central axis in an eccentric orbit, and,
• a pin having an oil orifice and press fit within the oil aperture of the orbiting scroll, wherein the oil orifice is configured to allow oil to pass through the orbiting scroll to the ball bearing;
• and
• a front cover, wherein the housing is formed by the inverter back cover, the inverter housing, the motor housing, the fixed scroll and the front cover.

A compression device for use with a scroll-type electric compressor configured to compress a refrigerant, the scroll-type electric compressor including a housing, a refrigerant inlet port, a refrigerant outlet port, an inventor module, a motor and a drive shaft, wherein the housing defines an intake volume and a discharge volume, the refrigerant inlet port being coupled to the housing and configured to introduce the refrigerant to the intake volume, the refrigerant outlet port being coupled to the housing and configured to allow compressed refrigerant to exit the scroll-type electric compressor from the discharge volume, the inverter module being mounted inside the housing and adapted to convert direct current electrical power to alternating current electrical power, the motor being mounted inside the housing, the drive shaft coupled to the motor, the compression device configured for receiving the refrigerant from the intake volume and compressing the refrigerant as the drive shaft is rotated by the motor, the compression device comprising:

• 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 a central axis, the orbiting scroll having a first side and a second and an oil aperture through the orbiting scroll from the first side to the second side,
• a swing-link mechanism coupled to the drive shaft,
• a ball bearing positioned between, and adjacent to each of the orbiting scroll and the swing-link mechanism, the drive shaft, orbiting scroll, and swing-link mechanism being arranged to cause the orbiting scroll to orbit the central axis in an eccentric orbit, and,
• a pin having an oil orifice and press fit within the oil aperture of the orbiting scroll, wherein the oil orifice is configured to allow oil to pass through the orbiting scroll to the ball bearing.