Rotary positive displacement machines,申请号US19780946320-传众专利搜索

Rotary positive displacement machines

申请公布号：US4224016(A)

申请号：US19780946320

申请日期：1978.09.27

申请公布日期：1980.09.23

申请人：

BROWN, ARTHUR E.

发明人：BROWN, ARTHUR E.

分类号：F01C1/18;F01C1/12;F01C1/20;F04C18/18;F04C18/20;(IPC1-7):F01C1/08;F04C18/08

主分类号：F01C1/18

摘要：The machines may function as a rotary compressor, vacuum pump, expansion engine, or the like. Two interengaging rotors rotate within intersecting bores in a casing structure. Two higher pressure ports are located one in each flat end wall of the casing. One rotor opens and closes the two higher pressure ports so as to control the flow of air or gas through same. The optimum number of teeth or lobes for each rotor is two. The port controlling first rotor has lobes of small included angle so as to reduce the effect of a precompression loss. The coacting second rotor has lobes of larger included angle so as to improve performance.