SU797783A1 - Generator of super-fine aerosols - Google Patents

Description

one

The invention relates to devices for producing highly dispersed mechanical aerosols used for treating plants, rooms, granaries, as well as for air conditioning, aerogenic vaccination and inhalation chemotherapy.

A known aerosol generator with a pump-free fluid supply, including an engine on a drive shaft of which a valve-sprayer is installed in the form of a disk with windows and jumpers, and a reflector with a liquid collector enclosed in a housing with an outlet nozzle 11,

However, such generators have a low yield of highly dispersed aerosols, which significantly affects the irrigation density.

The closest to the proposed is a highly dispersed generator. an aerosol containing a spray chamber with inlet and outlet nozzles, an annular reflector disposed therein, a fluid collector, sprayers, and compressed gas and liquid supply systems.

In this device, high-pressure gas enters the chamber and helps remove large droplets when it hits the stove. The mist formed in the chamber is carried away by compressed gas supplied under the slab to a cyclone separator to separate the remaining large droplets 2.

The disadvantage of it is low productivity in the production of highly dispersed aerosols. In addition, the spraying chamber and the cyclone separator are made separately, which complicates the design of the generator, and the fog is carried from the chamber to the separator by additionally supplied with compressed gas, which leads to an increase in

5 energy costs.

The purpose of the invention is to improve the performance of the generator.

This goal is achieved by the fact that a highly dispersed aerosol generator containing a spray chamber with inlet and outlet nozzles, an annular reflector placed in it, a fluid collector, sprayers and compressed gas and liquid supply systems, sprayers are installed in the spray chamber Cordalno.

In addition, the generator is provided with an additional tangentially installed gas inlet in the spray chamber.

FIG. 1 shows a highly dispersed aerosol generator; general view; in fig. 2 is a view A-A in FIG. one.

The highly dispersed aerosol generator contains a spraying chamber 1 with 2 inlets and 3 outlets, an annular reflector 4 placed in it, a collection 5 of liquid. In the cylindrical part of the chamber 1 gas-liquid atomizers 6, for example, pneumomechanical, are chordally placed. The bottom and lid of the chamber 1 are tapered.

The generator also contains a compressed gas supply system in the form of a pipeline 7 through which compressed gas is supplied from a source (not shown) to the atomizers 6, and a fluid supply system connected via a recirculation main 8 to a liquid collection 5 and including a reservoir 9, pipelines 10 and pump 11.

In addition, the generator is provided with an additional inlet pipe 12 tangentially installed in the spraying chamber for gas supply with a flap 13.

The generator works in the following way.

The liquid from the reservoir 9 is supplied to the sprays m, after the expiration of which it disintegrates into droplets. Subsequent fragmentation of the droplets and swirling of the flow in the vortex chamber 1 is compressed with gas flowing from gas-liquid nebulizers 6. The sprayed liquid is entrained in a swirling flow, resulting in large droplets separated on the walls of the chamber, SCr 5 and reflector 4 and collected in collection 5, and small drops are collected through the outlet 3. The separated liquid through the recirculation line 8 is returned for subsequent spraying into the tank 9.

The control of the aerosol dispersion composition during the generation process is carried out by controlling the gas flow rate entering the swirling chamber through the inlet 12, for example, from a fan (not shown in the drawing).

The dispersed composition of the aerosol withdrawn through the outlet depends on the speed of the swirling flow and the diameter of the annular reflector, and the capacity is determined by the amount of liquid entering the spray, the ratio of the flow rate of the liquid and the gas, and the gas flow through the generator.

An example of an implemented device. Water is sprayed compressed

air with the following parameters: Internal diameter of the vortex chamber, mm. 2000 Capacity of sprayer, kg / h 250 5 Number of dispensers, pcs20 Ratio of air and water flow rates, kg / kg 0, l-0, fe Air pressure, IPA 0.3 0 Water pressure, MPa 0.5 Output efficiency for particles with a diameter of 0 -25 µm, kg / h Up to 1000 The use of this aerosol 5 generator provides simplification

constructions, increase in productivity, mobility of control of aerosol dispersion composition, increase of efficiency of aerosol generation process.

Claims (2)

1. A highly dispersed aerosol generator comprising a spray chamber with 5 inlets and outlets, an annular reflector arranged therein, a liquid collector, sprayers and compressed gas and liquid supply systems, characterized in that In order to improve generator performance, sprayers are installed chordally in the spray chamber. 2. A generator according to Claim 1, characterized in that it is provided with an additional gas feed inlet that is tangentially mounted in the spray chamber. Sources of information taken into account expertise 1. Authors certificate of USSR 351512, cl. B 05 B 1/00, 1971. 2. The UK patent number 1460908, cl. In 2 F, pub. 1977 (prototype).