EP 0750116 B1 20010523 - Control method for displacement-type fluid machine, and apparatus thereof
Title (en)
Control method for displacement-type fluid machine, and apparatus thereof
Title (de)
Verfahren für die Regelung von Verdrängungstyp-Fluidmaschinen und Einrichtung hierfür
Title (fr)
Procédé de réglage pour le déplacement des machines de type fluide et dispositif pour celui-ci
Publication
Application
Priority
JP 17542995 A 19950619
Abstract (en)
[origin: EP0750116A1] A method and an apparatus for controlling a displacement-type fluid machine which handles fluid including gas and/or liquid for increasing or decreasing pressure of the fluid or transporting the fluid, comprising: provision of an alternating current motor for driving the displacement-type fluid machine; and provision of a frequency converter which is capable of conducting frequency conversion up to a range higher than the power source frequency to adjust the number of revolutions of the motor; wherein the number of revolutiong is adjusted so that input current to the motor is kept constant, regardless of any change in operating pressure of the displacement-type fluid machine, whereby the displacement-type fluid machine is operated maintaining the process values within an allowable limit without effecting repeated actuation and stopping of the machine.
IPC 1-7
IPC 8 full level
F04B 49/20 (2006.01); F04C 14/08 (2006.01); F04D 15/00 (2006.01)
CPC (source: EP)
F04B 49/20 (2013.01); F04C 14/08 (2013.01); F04B 2203/0204 (2013.01); F04C 2270/01 (2013.01); F04C 2270/075 (2013.01); F04C 2270/095 (2013.01); F04C 2270/40 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0750116 A1 19961227; EP 0750116 B1 20010523; DE 69612911 D1 20010628; DE 69612911 T2 20020328; JP H094591 A 19970107
DOCDB simple family (application)
EP 96109849 A 19960619; DE 69612911 T 19960619; JP 17542995 A 19950619