US 9,724,721 B2Granted

Pneumoacoustic bar atomizer

OwnerAndrey Nikolaevich Dubrovskyinventor

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Abstract

A mechanical device used to atomize liquids. The device eliminates circular instability at elevated generation frequencies, producing drops of 30-40μ. This is achieved when the central bar has been made with the diameter equal to the diameter of the nozzle. The longitudinal grooves in the central bar are located at the distance which does not exceed the quarter of the wave length of the nozzle working frequency. The depth of grooves at the central bar 8, their width t, number n, the generation frequency f, the width of the resonance groove of the pneumoacoustic bar nozzle a and the distance between the circular gas nozzle H and the bottom of the ring-like resonator were selected based on the ratio: S=n·8·t, where S is the aggregate cross section of grooves upon the preset gas efficiency; 12.5˜f·8˜15; 1.8˜a/8˜2.1; 7˜H/8˜8.

Claims3

Dependent claims

A pneumoacoustic nozzle comprising:

a cylindrical body having a central cylindrical hole and an inlet gas channel extending therethrough;
a central bar inserted into the central cylindrical hole and having a part projecting from the cylindrical body, and having an inlet channel for liquids;
a liquid circular chamber in fluid communication with the inlet channel for liquids;
a nozzle for liquids in fluid communication with the liquid circular chamber and embracing the central bar;
a ring-like resonator mounted on the projecting part of the central bar, which working part faces the cylindrical body, the working part having an annular resonance groove formed therein
wherein the gas nozzle and the nozzle for liquids are coaxially installed, the nozzle for liquids being located further on along a radius as measured from a central axis line of the cylindrical body;
a feedwell having an internal surface, the feedwell embracing the cylindrical body, forming a circular chamber and nozzle for liquids are made by longitudinal grooves in the cylindrical body, the grooves being limited by the internal surface of the feedwell, wherein the central bar has a diameter equal to the diameter of the gas nozzle and the longitudinal grooves are separated from each other by a distance that does not exceed a quarter length of a working frequency of the gas nozzle.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/759,657Filed 15 Aug 2013
Priority: RU 201313499126 Jul 2013
Published: US 2015/0343478 A13 Dec 2015
Granted: 8 Aug 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

B05B 17/06
Operating with special methods: using ultrasonic or other kinds of vibrations
B01F 23/2132
By spraying or atomising of the liquids: using nozzles
B01F 23/21321
Using nozzles: high pressure atomization, i.e. the liquid is atomized and sprayed by a jet at high pressure
B05B 17/0692
Using ultrasonic or other kinds of vibrations: generated by a fluid