Helical screw rotor profiles

Details Helical screw rotor profiles Helical screw rotor profiles

F - Mech Eng,Light,Heat,Weapons

04

D

230/39

F04D 17/06 (2006.01) F01C 1/08 (2006.01)

Patent

CA 1215956

HELICAL SCREW ROTOR PROFILES Abstract of the Disclosure The invention concerns helical- or screw-type driving and driven rotors having lands and intervening grooves for coacting engagement, within a housing of a machine, such as a gas compressor or expander, the rotors having im- proved, more efficient, profiles. The profiles are de- fined with contiguous elliptic and involute sections to improve the pressure angle, and the profiles are config- ured to define rotor-to-rotor sealing surfaces in closure of a compressed gas pocket in which, the pocket gas pres- sure always urges or torques the driven rotor in the positive or forward-rotary direction.

406907

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