PUMP UNIT, IN PARTICULAR, FOR HELICOPTER LUBRICATION Russian patent published in 2017 - IPC F04C11/00 F04C2/10 

FIELD: pumps.

SUBSTANCE: invention relates to lubrication pump unit in helicopters. Pump unit (1) contains drive shaft (3), passing along longitudinal axis, casing (2) containing side wall (8), limiting inlet opening (38) and delivery opening, rear wall (9) and front wall, opposite to each other, and transverse axes, delivery device, mounted in casing (2) and containing two rotary pumps (34), passing along corresponding axes parallel to longitudinal axis. Pumps (34) are diametrically opposite. Unit includes transmission (66), which distributes shaft (3) movement between pumps (34). Transmission (66) is placed into casing (2) compartment. Front wall has axial opening (13), through which shaft (3) is installed. Casing (2) has oil pipeline, connecting delivery opening with opening (13).

EFFECT: invention is aimed at creation of pump unit, capable to achieve relatively high volumetric efficiency, and prevent from cavitation without increasing its radial dimensions in order that, it was suited for installation in available mounting seat, formed in helicopter reduction gearbox.

12 cl, 7 dwg