SU219328A1 - JET FOR SPRAYING LIQUIDS - Google Patents

Description

The invention relates to nozzles for spraying liquids, including high-viscosity liquids, and can be used to inject fuel into combustion chambers of engines in installations for the chemical and other industries.

Known nozzles for spraying liquids, including high-viscosity liquids, comprise a housing with a sleeve installed therein, forming an annular channel for supplying a fluid to be sprayed, and a central tube for feeding the atomizer, at the end of which a rod with an ultrasonic oscillation generator is fixed.

These nozzles are adapted for relatively low fluid flow rates, as the flow rate, generator size and sprayer flow rate increase significantly with increasing flow rates, which causes great difficulties in operation. A feature of the proposed spray nozzle is that a swirler is installed in the feed channel for the sprayed liquid for example, centrifugal type.

The combination of the atomization of the fluid under the action of oscillations excited by the generator and the centrifugal forces arising in the vortical flow of the sprayed liquid creates favorable conditions for the operation

nozzles in a wide range of performance.

At low flow rates, when its pressure is not enough to ensure high-quality atomization, the energy generated by the oscillation generator acts, and the oscillations can be applied in a wide frequency band: sonic, ultrasonic and hypersonic, depending on the requirements

Required nozzles for operation.

At high flow rates, the nozzle can operate as a mechanical one, where sputtering occurs under the influence of centrifugal forces, arising, in a vorticated spray of fluid created by a swirl or tangential supply of fluid to the channel.

The drawing shows the proposed nozzle in the section.

A sleeve 2 is installed in the housing 1, forming an annular channel 3 for supplying a sprayed liquid with the inner wall of the housing and an output annular nozzle 4.

Channel 3 has a swirl 5 for

impart fluid movement. A central pipe 6 is installed along the nozzle axis to supply a sprayer, for example steam, air.

hypersonic vibrations. The frequency of oscillations excited by the generator 8 is determined by its shape and depth.

Subject invention

A nozzle for spraying liquids, including high-viscosity liquids, comprising a housing with a sleeve placed inside.

forming an annular fluid supply channel, a central tube for the spray gun, a rod mounted on the end of the tube with an oscillator of the required frequency, characterized in that, in order to expand the range of the nozzle capacity, a swirler, for example, centrifugal, is installed in the spray liquid supply channel.