SU915858A1 - Pneumatic generator of aerosols - Google Patents

Description

The invention relates to medical equipment, namely, inhalers.

A pneumatic aerosol generator is known, which contains reservoirs for the sprayed fluid, connected by a connecting tube, fluid supply channels, one spray nozzles with concentrically mounted nozzles and inlets for supplying compressed air to the nozzles opposite one another, a tank with a float valve connected to the water mains and through a check valve with connecting tube [1].

However, the known device has a complex structure and low reliability, which reduces the quality of the prepared aerosols.

The purpose of the invention is to simplify the design and increase reliability by ensuring the alignment of the nozzles.

This goal is achieved by the fact that the pneumatic generator of aerosols, including sprayers, tank, air supply pipes installed in the side walls of the tank, and channels for supplying fluid, is equipped with a spray

2

the camera is inserted into the tank, the nozzles are made in the form of coaxial through holes in the side walls of the spray chamber and the tank, and the channels for the fluid supply are made in the form of grooves

5 between the walls of the spray booth and the reservoir to connect the nozzles to the bottom of the reservoir.

FIG. 1 shows a pneumatic aerosol generator, longitudinal section; in fig. 2 is a section A-A in FIG. one.

The aerosol generator contains a tank 1 with air inlets 2 installed in its wall and a spray chamber 3 inserted into tank 1. There are 15 coaxial holes 4 in the side wall of tank 1 communicating with nozzles 2, and holes 5 coaxial in the side wall of spray chamber 3 with holes 4. At the same time between the walls of the tank 1 and the chamber 3 there are grooves 6, which communicate the transitional parts of the holes 4 and 5 with the bottom of the tank 1. Thus, the generator nozzles are made in the form of through coaxial holes 4 and 5 in bo ovyh walls of the tank 1 and the dispersion chamber 3 and the supply channels

four

915858

3

liquids are grooves 6 between the walls of the tank 1 and the chamber 3.

The aerosol generator works as follows.

Compressed air hoses are connected to nozzles 2. In the tank 1 pour the liquid from which they wish to receive the aerosol. * By applying compressed air into the air jet nozzles 2 formed holes 4, flow through the openings 5. In this case, a vacuum grooves 6 under the action of which the liquid from the cavity ₁₀ rezervua- ra 1 is sucked and atomized in the holes 5. The resulting spray jets collide in the central part of the spray booth 3, resulting in small droplets of spray. The smallest fraction of the spray liquid 15 is carried out of the Ka'mer 3 by an upward flow of air flowing out of the holes 5, and a larger fraction of droplets settles to the bottom of the tank 1 and will be re-sawed. _ten

Thus, the device of the aerosol generator allows to significantly simplify the design and reduce material consumption. In addition, the coaxiality of the sprayers provides increased reliability of the pneumatic aerosol generator and improved quality of aerosols.

Claims (1)

Claim A pneumatic aerosol generator including sprayers, a reservoir, air supply nozzles installed in the side walls of the reservoir, and fluid supply channels, characterized in that, in order to simplify the design and increase reliability of operation by ensuring coaxiality of the sprayers, it is equipped with a spray chamber inserted into the reservoir , nozzles are made in the form of coaxial through holes in the side walls of the spray chamber and the tank, and the fluid supply channels are made in the form of grooves between the walls of the spray Call duration and the reservoir chamber to communicate with the lower part dispensers tank.