SU542076A1 - Swirl tube - Google Patents

Description

one

This invention relates to a vortex tube with a cooled, hot end.

Vortex tubes are known in which a cooling jacket is included in a closed circulation loop equipped with a coil g and a bellows is installed at the hot end of the tube to circulate the working fluid during pressure fluctuations 1.

The disadvantage of such a vortex tube is the inefficient circulation of the cooling fluid in the absence of a hot flow pulsation.

Known vortex tubes with a cooling water jacket, having a nozzle, made in the form of a vortex ejector, the active 15 nozzle of which is connected to the cavity of the hot end by means of a pipeline in the throttle zone f 2.

The disadvantage of such vortex tubes is the increased flow of water from the evaporation mirror. 0

Vortex tubes are also known, comprising a housing with a nozzle inlet and a jacket at the hot end filled with porous material, cooling of the jacket is ensured by a coil placed in it, connected-5

to the refrigerant circuit. 3.

Such vortex tubes require significant refrigerant costs (for example, water), which does not allow them to be used in conditions with limited resources.

The purpose of the invention is to increase efficiency.

This is achieved by the fact that the part of the jacket adjacent to the nozzle inlet is made free of porous material and connected to a coil located in the tank filled with liquid refrigerant and connected to the ejector, the active nozzle of which is connected to the hot end of the pipe, and the mixing chamber through the tank communicated with the refrigerant inlets placed on the side surface of the jacket into the porous material.

FIG. 1 schematically shows the proposed vortex tube; in fig. 2 - swirl chamber with nozzle input.

Claims (3)

The nozzle inlet 1 of compressed gas is located tangentially to the swirl chamber 2 of the vortex tube. A diaphragm 3 is connected to the chamber 2 for the exit of cold air and a hot end 4 of a pipe made of B111 sotokloploprovodny material. The amount of hot air escaping from the pipe is controlled by the throttle valve 5, the hot end 4 of the pipe is enclosed in a cooling jacket b filled with porous material 7, for example, felt placed in cooling jacket 6 so that the nozzle 1 is left empty of the porous material Section 8. Cooling jacket 6 is equipped with taps 9 on inlets 10 for metering coolant supply to the inside of porous material 7. At the same time, the first section of taps 9 is located in the cross section of the throttle valve 5, the second in section, the first section in the direction lepip the swirl chamber 2 at a distance 3-5 inside diameters of the pipe and valve tre THii - s section spaced from the second oecheni present in the same direction at a distance of 2-4 pipe diameters. Inputs 10 are connected by pipeline 11 to the cavity of the supply tank 12, in which the coil 13 is placed. The coil 13 is connected on one side with the outlet 14 of the condensate and coolant vapor from section 8 of the cooling jacket 6, and on the other with a vortex or jet ejector 15, an active nozzle which (not shown) is connected to the hot end 4. The ejector 15 is in communication with the tank 12, the E-pipe tube works as follows. When gas (air) is fed through the nozzle j-iOE. 1 into chamber 2, the gas flow is separated into hot and cold components. The axial section — the cold part of the divided flow exits through the diaphragm 3 peripheral — the combustible part, possessing E) high temperature, pressure and turbulence, vigorously releases the heat to the hot end 4 of the pipe cooled by a coolant film coming from the supply tank 12 to the inlets 10 through taps 9 , providing adjustment of the cooling network depending on the mode of operation of the vortex tube. During the operation of the vortex tube, a thin film of the coolant evaporates, as a result of which there is an intensive heat removal from the hot end of the tube. The vapor and liquid particles of the secondary carrier, aspirated by the ejector 15, pass through the coil 13 installed in the tank 12 and condense, and then through the ejector 15 re-enter the feed tank 12 for further use. The advantages of the proposed vortex tube are a lower coolant flow rate, a higher amount of cold air compared to the uncooled tube (0.76 - and XJ 0.88 vs. L 0.3), as well as an additional lowering of the temperature of cold air by 89 ° at 0, 88 Compared to cooling with running water in the cooling system of the proposed pipe, the flow rate was reduced from 8O / l / h to 4.6 l / h. Claims of the invention A vortex tube comprising a housing with a nozzle inlet and a jacket at the hot end filled with a porous material, characterized in that, in order to improve efficiency, a portion of the jacket adjacent to the nozzle inlet is free from the porous material and connected to the coil, located in the tank, filled with liquid refrigerant and connected to the ejector, the active nozzle of which is connected to the hot end of the pipe, and the mixing chamber through the tank communicates with the inputs on the side of the jacket refrigerant in porous material. Sources of information taken into account in the examination: 1. Author's certificate number 337620, 25 B 9/02, 1972 2. Certificate of authorship No. 485286, F 25 B 9 / O2, 1974 3. US patent number 346O373, 73-17, 1969