STEPPING PIEZOELECTRIC MOTOR Russian patent published in 2020 - IPC H02N2/04 F04B17/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the electrical equipment. Step-type piezoelectric motor comprises a housing, a runner located in the housing and consisting of in-series connected rear and front spacer piezoelectric sliders, a piezoelectric actuator. Rear slider includes rear piezoactuator. Piezoelectric actuator is movable relative to the body in the direction of changing its length. Front slider includes front piezoactuator. Engine comprises cooling fluid pump to suction liquid from container. In the piezo-actuators there are internal channels and four connecting passes connecting in series: the cooling liquid pump outlet to the internal channel of the rear piezo-actuator, internal channel of rear piezo-actuator with internal channel of travel piezo-actuator, inner channel of travel piezo-actuator with internal channel of front piezo-actuator, inner channel of front piezoelectric actuator with capacitance.

EFFECT: technical result consists in increase in overhaul period of stepped piezoelectric motor due to reduced overheating.

3 cl, 3 dwg