Motor driven two-stage centrifugal air-conditioning compressor

Details Motor driven two-stage centrifugal air-conditioning compressor Motor driven two-stage centrifugal air-conditioning compressor

2006-02-14

2006-02-14

Koczo, Jr., Michael (Department: 3746)

Pumps

Motor driven

Motor rotor intermediate coaxial pump rotors

C417S044100, C417S250000, C417S365000, C417S370000, C417S423800

Reexamination Certificate

active

06997686

ABSTRACT:
A two-stage compressor for generating necessary pressure differential for air-conditioning applications with air-cooled, water-cooled and evaporative-cooled condensing systems using low-pressure refrigerant, such as R134a, is provided. A rotating assembly is mounted for rotation in a compressor housing and includes a shaft, a thrust bearing disk associated with the shaft to maintain an axial position of the rotating assembly, a motor rotor mounted on the shaft, and first and second impellers mounted for rotation with the shaft. First and second journal bearings are mounted in the compressor housing to support the shaft and maintain radial positioning of the rotating assembly. Volute housings including a spiral-shaped volute are associated with each of the impellers to collect and further discharge gas compressed by the impellers. Diffusers having air-foil shaped vanes are locate in the volute channels adjacent the discharge outlets of the impellers to aide in the discharge of gas from the impellers.

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