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Rotary compressor with the stationary crankshaft.

Number: pap. 1226

Author(s) : DREIMAN N.

Summary

Novel rotary compressor provides an unitary assembly, in which a rotor of the driver -external rotor electric motor, is radially integrated with a pump and arranged on a stationary crankshaft which is fixedly connected to the hermetic housing and supports as a rigidly fixed to it motor stator so spinning rotor block and an eccentrically fit revolving piston with integrally formed or rigidly fixed vane. The rotor block and eccentrically fit revolving piston are assembled without clearance in between and have line rolling contact where tangential (linear) velocities of both are unidirectional and equal in magnitude. Such coupling of two cylindrical bodies having rolling contact is used to transfer motion from the rotor block (driver) to the revolving piston (follower). Such arrangement is not only supplement basic moment transferred to the revolving piston by rigidly fixed vane (coupler) but also reduce and eliminate frictional and leakage losses. Novel rotary compressor further comprises the following: a suction gas delivery system which eliminates external accumulator, provides cooling of the motor and delivered refrigerant into suction chamber under higher pressure (supercharged) due to action of the build-in impeller; a discharge system utilizing a tubular thin-walled discharge valve and circular expansion cavity equipped with nozzles through which the discharge gas ejects tangentially from side of the revolving piston in direction opposite to the direction of rotation to produce reaction force and momentum which will also supplement moment transferred to the revolving piston by rigidly fixed vane; a lubricating oil system employing positive displacement oil pump, oil channels bored in the crankshaft and plurality of oil accumulated circular pockets which prevents formation of “gas lock” condition and accelerates delivery of oil to bearings and mating surfaces, said oil which is thrown outward by centrifugal force will not only lubricate, but will also form linear or annular shaped liquid seal at the edges of abutting parts and, consequently, reduce leakage losses.

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Pages: 10 p.

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Details

  • Original title: Rotary compressor with the stationary crankshaft.
  • Record ID : 30012833
  • Languages: English
  • Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
  • Publication date: 2014/07/14

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