Patent · US Active

Electric and hydraulic machine

US11990819B2 · kind B2 · utility

0Cited by

24References

20Claims

0Family size

Assignee

Bosch Rexroth Corporation · DE

Inventors

Enrique Busquets · Greer, US
Uwe Neumann · Coburg, DE
Andrea Vacca · West Lafayette, US
Federico Zappaterra · West Lafayette, US

Key dates

Filing date	Nov 24, 2020
Grant date	May 21, 2024
Priority date	—
Expiry date	Jul 2, 2042

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D29/5806
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An electric and hydraulic machine includes a housing defining a motor chamber and a pump chamber, a motor comprising a rotor and a stator positioned within the motor chamber, and a pump comprising a pumping element positioned within the pump chamber, the pumping element movable by the motor to displace fluid in the pump chamber. The pump chamber includes a low-pressure chamber and a high-pressure chamber, a unit inlet defined by the housing and in communication with the low-pressure chamber, and a unit outlet defined by the housing and in communication with the high-pressure chamber. The pump chamber is positioned radially inward of the motor chamber such that the pump is nested within the motor. A radial cooling channel extends in a radial direction from the low-pressure chamber to the motor chamber such that fluid in the pump chamber communicates with the rotor and the stator to cool the motor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.