SECRETLY INSTALLED STATIONARY ULTRASONIC DEVICE FOR CONTROLLING CYANOBACTERIAL BLOOM OF SMALL WATER BODIES Russian patent published in 2024 - IPC C02F1/36 

FIELD: physics.

SUBSTANCE: invention relates to devices for suppressing growth and development of cyanobacteria of all types using ultrasound in small water bodies of natural and artificial origin. Device comprises connected by assembly operations a step-up generator power supply, a capacitive storage, an electric oscillation generator, a unit of emitters based on piezoelectric transducers, control unit based on microcontroller, underwater electric cable and shore DC power supply unit with voltage from 12 to 24 V. Generator of electric oscillations is made with possibility of programmed tuning for operation at resonance frequencies of piezoelectric transducers in unit of radiators. Coastal power supply unit is made with a converter which compensates for losses in the cable and ensures constant operating voltage, is made with possibility of operation in constant mode. Emitters of the emitter unit are configured to select natural resonance frequencies near frequencies of suppression of algae. Power supply unit is configured to generate voltage up to 100 V. Control unit contains a modem for communication of the underwater unit with the ground one. Emitter unit is configured to form any desired beam pattern. Unit of emitters is made so that to enable structural connection of several identical modules into a cascade connected to a common generator. Piezoelectric transducers of the emitter unit are made in the form of rings with the possibility of operation at natural frequencies selected according to the most pronounced effect on a certain type of algae. Unit of radiators is equipped with foam plastic float providing vertical tension of cables and arrangement of radiator in water column.

EFFECT: increased area of ultrasonic action on cyanobacteria in water body.

1 cl, 2 dwg