Development of a mathematical model of the unlubricated compressor stage of the rotary-vane type with a new tribological configuration

The paper proposes design of the unlubricated compressor stage of the rotary-vane type with a new tribological scheme. It is introducing the sealing plates with flanges resting on the unloading rolling bearings positioned in the cylinder end covers. The paper provides experimental results of studying power losses due to friction in the new and traditional stages. A mathematical model for computing power losses due to friction in the unlubricated compressor stage of the rotary-vane type with a new tribological scheme was developed. The computation error was not exceeding 10%. Analysis of the calculation results and experimental study demonstrates that power losses due to friction in the working chamber of a new unlubricated rotary-vane compressor in the rotor speed range of 1000...3700 min–1 are by 4–20 times less than in such a traditional design.
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