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Electrically driven compressors and methods for circulating lubrication oil through the same

  • US 20020136652A1
  • Filed: 03/25/2002
  • Published: 09/26/2002
  • Est. Priority Date: 03/26/2001
  • Status: Abandoned Application
First Claim
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1. A scroll compressor comprising:

  • a fixed scroll and a movable scroll having respective scroll walls, the scroll walls slidably contacting each other and defining a compression chamber between the fixed scroll and the movable scroll, an electric motor rotatably driving the movable scroll, whereby a refrigerant is drawn from a suction-side region, is compressed within the compression chamber and is then discharged to a discharge-side region as the movable scroll rotates relative to the fixed scroll, wherein a refrigerant flow channel is defined from the suction side region to the discharge side region via the compression chamber, a motor housing defining a substantially sealed motor chamber, wherein the electric motor is disposed within the motor chamber, a communication path linking the refrigerant flow channel to the motor chamber and a lubricating oil supply route defined between a discharge-side region of the refrigerant flow channel and an area proximal to slide contact portions of the scroll walls of the fixed and movable scrolls, the lubricating oil supply route being arranged and constructed so that a difference between the pressure at the discharge-side region of the refrigerant flow channel and the pressure at the area proximal to the slide contact portions of the scroll walls of the fixed and movable scrolls urges lubricating oil towards the slide contact portions of the scroll walls of the fixed and movable scrolls via the lubricating oil supply route.

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