EP 0914184 A1 19990512 - APPARATUS AND METHOD FOR MANIPULATING PARTICLES IN A LIQUID MEDIUM BY ULTRASONIC WAVES
Title (en)
APPARATUS AND METHOD FOR MANIPULATING PARTICLES IN A LIQUID MEDIUM BY ULTRASONIC WAVES
Title (de)
VORRICHTUNG UND VERFAHREN FÜR DIE BEEINFLUSSUNG VON PARTIKELN IN EINEM FLÜSSIGMEDIUM MITTELS ULTRASCHALLWELLEN
Title (fr)
APPAREIL ET PROCEDE PERMETTANT DE MANIPULER DES PARTICULES DANS UN MILIEU LIQUIDE AU MOYEN D'ONDES ULTRASONIQUES
Publication
Application
Priority
- GB 9701239 W 19970508
- GB 9609819 A 19960510
- GB 9618424 A 19960904
Abstract (en)
[origin: WO9743026A1] The invention relates to an apparatus and a method for munipulating particles in a liquid medium by ultrasonic waves. A vessel is provided for receiving the particle-carrying liquid, as well as means, such as an ultrasonic transducer for generating an ultrasonic standing wave in the vessel such that particles are attracted to nodal fronts of the standing wave. The standing wave is intermittently suppressed, whilst the particle-carrying liquid is oscillated relative to the transducer. If the oscillation and the intermittency are carried out in synchronisation, the particles can be shepherded from one nodal front to another in a prescribed direction to concentrate them for separation from the liquid medium. The invention has application to separation or concentration of inorganic or organic particulate matter in laboratory or industrial processes.
IPC 1-7
IPC 8 full level
G01N 1/10 (2006.01); B01D 21/00 (2006.01); B01D 21/28 (2006.01); B01D 43/00 (2006.01); B01J 19/10 (2006.01); B01J 43/00 (2006.01); B25J 7/00 (2006.01); B81C 99/00 (2010.01); C02F 1/36 (2006.01); C12M 1/00 (2006.01); G01N 1/36 (2006.01)
CPC (source: EP)
B01D 21/283 (2013.01); B01D 43/00 (2013.01); B01J 19/10 (2013.01)
Citation (search report)
See references of WO 9743026A1
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
WO 9743026 A1 19971120; EP 0914184 A1 19990512; JP 2001502225 A 20010220
DOCDB simple family (application)
GB 9701239 W 19970508; EP 97920846 A 19970508; JP 54061997 A 19970508