SU826094A1 - Liquid-gas ejector - Google Patents

Description

one

The invention relates to inkjet technology.

Known liquid-gas ejector containing the active nozzle, mixing chamber, diffuser and nozzles supplying active and passive media I

The ejector has low productivity.

Closest to the proposed liquid-gas ejector containing an active nozzle with tangentially located connections for supplying an active liquid medium, a mixing chamber with a diaphragm located in its output section and a connection for supplying a passive medium with axial blades 2.

However, in this liquid-gas ejector, the efficiency decreases with increasing backpressure, which is associated with a violation of the process of restructuring the torch of the active medium flowing from the nozzle.

The purpose of the invention is to increase efficiency

This goal is achieved by the fact that the mixing chamber is equipped with a supersonic diffuser installed in its output section and coaxially enclosed in a casing having tangential openings, and coaxially with the chamber

mixing is installed with the possibility of axial movement of the shell, forming a diffuser with the walls. The camera communicates with the active nozzle.

 FIG. 1 shows an ejector, longitudinal section; in fig. 2 is a view A of FIG. one; in fig. 3 - section BB

in fig. one.

o

The liquid-gas ejector contains an active nozzle 1 with tangentially located branch pipes 2 for supplying an active liquid medium, a mixing chamber 3 with a diaphragm 4 located in its output section and a nozzle 5 for supplying a passive medium with axial blades 6. The mixing chamber 3 is equipped with an assembly installed in its output section and coaxially with her supersonic diffuser 7, enclosed in a casing 8,

0 having tangential holes 9, and coaxially with the mixing chamber 3, the shell 10 forming the chamber with the walls of the diffuser is axially displaced. The camera communicates with the active nozzle 1 through a pipeline 11 with a locking element 12. Provision is made for the supply of a liquid medium into the chamber through a pipeline 13 with an axial element 14.

Claims (2)

0 Liquid medium is supplied through tangentially located nozzles. 2 supplying the active liquid medium to the active nozzle 1, Expired. From the nozzle 1 in the form of a liquid torch, the active medium captures the passive gaseous medium entering the 3flow chamber through the nozzle 5 supplying the passive medium with axial blades 6 Formed with a rotating liquid-gas mixture presses at the end of the mixing chamber 3 by the annular diaphragm 4 and is intensively twisted. Due to this increase in time, the surface of the cone of the plume is rebuilt, and due to centrifugal forces it is pressed against the inner surface of the mixing chamber 3, thus forming a dense, gas-impermeable layer of liquid, which contributes to an increase in the ejection capacity of the torch, which is no longer dependent on the diameter of the droplets dispersed liquid. The liquid-gas mixture formed enters the diffuser 7, where the kinematic energy of the flow is partially converted into potential. In this case, 2 operating modes are possible. At low counterpressures, the mixture leaving the liquid-gas diffuser 7 at considerable speed creates a vacuum zone in KciMepe bounded by the walls of the supersonic diffuser 7 and the shell 10. At this operating mode, the locking element 12 and the pipeline 11 open the chamber communicates with the vacuum zone created by the rotation of the rotation of the fluid in the active nozzle 1, in its axial part. However, due to the pressure difference in the receiving 3tHe mixing chamber 3 in the chamber of the shell 10 through the housing 8 and tangent The orifices will create a gas flow sucked through the chamber from shell 10 due to the kinetic energy of the jet flowing out of diffuser 7. By axially moving the shell 10, the gap at the exit of the diffuser 7 and the wall of the shell 10 are adjusted. the size of the gap at the exit of the diffuser 7 is reduced, to a minimum. The locking element 12 is closed and the locking element 14 is opened. In this case, the pressurized fluid fills the chamber, 2 in the shell 10, passes through the tangential openings 9 of the casing 8, twists and, due to centrifugal forces, expires in the form of a torch directed upwards into the zone of the mixing chamber 3. When this happens, the torch of the fluid flowing from the housing 8 interacts with the torch of the fluid flowing out of the active nozzle 1. This leads to more intense turbulization of the surface of the torch of the fluid and an increase in the gas trapping degree in the mixing chamber 3. Thus, by intensifying the process of mixing passive and active media in various operating modes of the ejector, its efficiency is increased. Claim 1. Liquid-gas ejector containing an active nozzle with tangentially located connections for supplying an active liquid medium, a mixing chamber with a diaphragm located in its output section and a nozzle for supplying a passive medium with axial blades, characterized in that, in order to increase the efficiency of KciMepa mixing equipped with a supersonic diffuser installed in its output section and coaxially enclosed in a casing having tangential holes, and coaxially with a mixing chamber installed with the possibility of axial transmission The shell of the chamber forming the chamber with the walls of the diffuser is 2. The ejector according to claim 1, wherein the chamber is in communication with the active nozzle. Sources of information taken into account in the examination 1. The Federal Republic of Germany patent 855656, cl. 59 C 11, published. 1949. 2. USSR author's certificate K-623999, cl. F 04 f 5/00, 1977. at Phie, 5