ROTARY-VANE VACUUM PUMP Russian patent published in 2016 - IPC F04C25/02 F04C18/344 F04C29/02 

FIELD: engines and pumps.

SUBSTANCE: invention relates to vacuum rotary pumps used in automotive industry for creating vacuum in vehicle brake actuator boosters, as well as in hydraulic or pneumatic systems. Rotary vacuum pump comprises housing 1 in form of oval chamber, side plates 2, sealing opposite end surfaces of housing 1, rotor 3 running in eccentric position relative to housing 1 center, blade 4, during rotor 3 rotation dividing housing 1 cavity into two spaces. Blade 4 is made solid from carbon filled material. In blade 4 body two groups of 2n longitudinal channels are made, uniformly spaced apart parallel to longitudinal axis and directed from blades 4 ends towards each other. On the side of oil supplying channel 6 in blade 4 by 2n transverse channels 9 are made in the area of each of longitudinal channels groups, perpendicular to longitudinal channels and communicating with them. Throughout blade 4 ends length grooves-recesses are made.

EFFECT: simplified pump design, increasing its reliability and efficiency.

3 cl, 4 dwg