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1. WO2020002612 - ELECTRIC MOTOR PUMP SYSTEM AND METHOD

Publication Number WO/2020/002612
Publication Date 02.01.2020
International Application No. PCT/EP2019/067353
International Filing Date 28.06.2019
IPC
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1
Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12
having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
26
Control
28
for machines or pumps with stationary cylinders
29
by varying the relative positions of a swash plate and a cylinder block
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1
Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12
having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
26
Control
30
for machines or pumps with rotary cylinder block
32
by varying the relative positions of a swash plate and a cylinder block
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49
Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups F04B1/-F04B47/196
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49
Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups F04B1/-F04B47/196
06
Control using electricity
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49
Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups F04B1/-F04B47/196
08
Regulating by delivery pressure
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49
Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups F04B1/-F04B47/196
10
Other safety measures
F04B 1/29 (2006.01)
F04B 1/32 (2006.01)
F04B 49/00 (2006.01)
F04B 49/06 (2006.01)
F04B 49/08 (2006.01)
F04B 49/10 (2006.01)
CPC
F04B 1/295
F04B 1/324
F04B 49/002
F04B 49/06
F04B 49/08
F04B 49/103
Applicants
  • EATON INTELLIGENT POWER LIMITED [IE/IE]; 30 Pembroke Road Dublin, 4, IE
Inventors
  • SHAND, Charles; GB
  • STACEY, Mark; GB
  • ORDE, Simon; GB
  • BIRCH, Steve; GB
  • DEVAN, Stephen; US
  • GALLOWAY, Phil; US
  • SCOTT, Douglas; US
  • CHAPMAN, Daniel; US
Agents
  • EATON IP GROUP EMEA; Route de la Longeraie 7 1110 Morges, CH
Priority Data
62/691,92529.06.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ELECTRIC MOTOR PUMP SYSTEM AND METHOD
(FR) SYSTÈME ET PROCÉDÉ DE MOTOPOMPE ÉLECTRIQUE
Abstract
(EN)
An electric motor pump system includes a variable displacement pump (100), an electric motor connected to drive the variable displacement pump, a first control piston (120) configured to limit an output pressure characteristic of the pump, and a second control piston (160) controlled via a servo valve (150) according to an output speed of the electric motor. The second piston (160) is configured to maintain a substantially constant output flow of the pump as the output speed of the electric motor changes. The first and second control pistons (120, 160) may act on a yoke (130) of the variable displacement pump.
(FR)
La présente invention concerne un système de motopompe électrique comprenant une pompe à cylindrée variable (100), un moteur électrique relié pour entraîner la pompe à cylindrée variable, un premier piston de commande (120) conçu pour limiter une caractéristique de pression de sortie de la pompe, et un deuxième piston de commande (160) commandé par une servovalve (150) en fonction d'une vitesse de sortie du moteur électrique. Le deuxième piston (160) est conçu pour maintenir un débit de sortie sensiblement constant de la pompe lorsque la vitesse de sortie du moteur électrique change. Les premier et deuxième pistons de commande (120, 160) peuvent agir sur une culasse (130) de la pompe à cylindrée variable.
Latest bibliographic data on file with the International Bureau