EP 1238715 A1 20020911 - Multifrequency ultrasonic structural actuators
Title (en)
Multifrequency ultrasonic structural actuators
Title (de)
Multifrequenz-Ultraschall-Betätigungsvorrichtung für Aufbaukomponente
Title (fr)
Actionneur structurel ultrasonique multifréquence
Publication
Application
Priority
EP 01810227 A 20010305
Abstract (en)
The propagation of ultrasonic energy in arbitrary shaped solid structures (D), heavy and very-thick-walls metal containers, pressurized reservoirs, very-thick metal-walls autoclaves, in different mechanical oscillating structures and systems,... is realized using a novel ultrasonic structural, multifrequency actuator (including very particular multifrequency ultrasonic power supply, also the subject of this invention), able to initiate ringing and relaxing, multimode mechanical oscillations (harmonics and sub harmonics) in any heavy-duty, bulky and rigid system, producing pulse-repetitive, phase, frequency and amplitude-modulated bulk-wave-excitation (covering and sweeping extremely large frequency area). Such ultrasonic driving is creating uniform and homogenous distribution of acoustical activity on a surface and inside of the vibrating system, while avoiding creation of stationary and standing waves structure, making that the complete vibrating system is fully agitated. Multifrequency ultrasonic structural actuator is ideal for agitating arbitrary distant and arbitrary shaped liquid and solid masses placed in different open or pressurized vessels, containers, autoclaves, reservoirs and pipes, transferring vibrations via wave-guide solid rod fixed betweem the transducer and a loading mass (where loading mass presents an oscillating body, and/or oscillating vessel, autoclave, container...). This invention presents an extension and continuation of the previous patent, originating from the same Author/Inventor (see 1 060 789 A1), explaining the additional aspects of particular electronics necessary to drive ultrasonic transducers in a multifrequency and multi-mode oscillating regime/s, while keeping high efficiency of electric and ultrasonic energy transfer and/or transformation. Fields o f possible applications related to this invention are: Ultrasonic Cleaning, Welding,Material Processing, Sonochemistry, Liquid Metals treatment, Atomization, Materials Testing, Aging and Stress Release, Homogenization, Process Industry, etc. <IMAGE>
IPC 1-7
IPC 8 full level
B06B 1/02 (2006.01)
CPC (source: EP)
B06B 1/0246 (2013.01); B06B 1/0276 (2013.01)
Citation (search report)
- [Y] US 5421829 A 19950606 - OLICHNEY MICHAEL D [US], et al
- [Y] US 5880580 A 19990309 - JOHANSEN DAVID K [US]
- [Y] US 5834871 A 19981110 - PUSKAS WILLIAM L [US]
- [A] US 5276376 A 19940104 - PUSKAS PETER J [US]
- [A] US 5754016 A 19980519 - JOVANOVIC VIDAN [US], et al
- [A] US 5917266 A 19990629 - MURAI KATSUMI [JP], et al
- [A] US 5900690 A 19990504 - GIPSON LAMAR HEATH [US], et al
- [A] US 6016821 A 20000125 - PUSKAS WILLIAM L [US]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 01810227 A 20010305