EP 3708836 A4 20210519 - AIR COMPRESSOR AND AIR COMPRESSOR CONTROL METHOD
Title (en)
AIR COMPRESSOR AND AIR COMPRESSOR CONTROL METHOD
Title (de)
LUFTKOMPRESSOR UND VERFAHREN ZUR STEUERUNG EINES LUFTKOMPRESSORS
Title (fr)
COMPRESSEUR D'AIR ET PROCÉDÉ DE COMMANDE DE COMPRESSEUR D'AIR
Publication
Application
Priority
- JP 2017216797 A 20171109
- JP 2018035763 W 20180926
Abstract (en)
[origin: EP3708836A1] The present invention provides an air compressor that reduces a load torque at the time of starting. A compressor 1 includes a compressor body 2, an electric motor 6 that drives the main body 2, and a current supply circuit 21 that supplies a current to the electric motor 6. The circuit 21 is switchable between a steady operation mode in which a rated voltage of a power supply is applied to the electric motor and a start mode in which a voltage lower than the rated voltage is applied to the electric motor. The compressor 1 further includes an intake adjustment valve 100 switchable between an opened state and a closed state, and a controller 20 that controls the modes of the circuit 21 and the opened and closed states of the valve 100. The controller 20 determines whether or not the electric motor 6 reaches a rated rotational speed. The valve 100 is closed and the circuit 21 is set to the start mode for a period from a start time to a steady operation start time when it is determined that a rotational speed of the electric motor 6 reaches the rated rotational speed, and the circuit 21 is switched to the steady operation mode and the valve 100 is opened in synchronization with the switching for a period after the steady operation start time.
IPC 8 full level
F04B 49/06 (2006.01); F04B 35/04 (2006.01); F04B 39/02 (2006.01); F04B 39/06 (2006.01); F04B 49/03 (2006.01); F04C 28/06 (2006.01)
CPC (source: EP)
F04B 35/04 (2013.01); F04B 39/02 (2013.01); F04B 39/062 (2013.01); F04B 49/03 (2013.01); F04B 49/065 (2013.01); F04C 28/06 (2013.01); F04B 2201/0402 (2013.01); F04B 2203/0202 (2013.01); F04B 2203/0209 (2013.01); F04B 2205/09 (2013.01)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 2019093007A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3708836 A1 20200916; EP 3708836 A4 20210519; CN 111279078 A 20200612; CN 111279078 B 20220419; JP 2019085974 A 20190606; JP 6761402 B2 20200923; SG 11202003684V A 20200528; WO 2019093007 A1 20190516
DOCDB simple family (application)
EP 18875396 A 20180926; CN 201880072536 A 20180926; JP 2017216797 A 20171109; JP 2018035763 W 20180926; SG 11202003684V A 20180926