Nozzle of vortex tube
A technology of vortex tubes and nozzles, which is applied in the refrigeration field of Ming Dynasty, can solve the problems of large energy loss, small unit cooling capacity, and low energy separation efficiency, so as to increase the cold flow rate, increase the unit cooling capacity, increase the unit cooling capacity and The effect of cooling coefficient
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Embodiment 1
[0046] In this implementation, compared with the existing ordinary nozzles, only the profile of the nozzle flow channel 1 is changed. As shown in FIG. 8 and FIG. 9, the nozzle 6 of the present invention and the cold end tube 4 of the vortex tube are integrated as a whole. Replace the parts and install the corresponding position of the vortex tube. The Mach number at the exit of the nozzle flow channel is 0.57, and the Mach number at the entrance is 0.19.
[0047] Ordinary rectangular nozzle size: cold air hole diameter 5.6mm, swirl chamber diameter 13mm, nozzle outer circumference is straight
[0048] Diameter 20mm, nozzle runner groove width L=2mm, nozzle runner groove depth H=1mm,
[0049] The nozzle material is plexiglass.
[0050] Archimedes spiral nozzle: same size and material as ordinary rectangular nozzle
[0051] The size of the nozzle of the present invention: the groove width at the entrance of the nozzle flow channel L e =3mm, the groo...
Embodiment 2
[0055] At the same time, change the nozzle flow channel 1 profile and the nozzle inlet flow channel shape. Refer to Figures 3, 4, and 5 for details, the number of nozzle runners is 3, and the slot width at the inlet of runner 2 before air intake is L 0 ′ Is 7.2mm, and the nozzle 6 and the cold end pipe 4 are connected by ribs. The assembly of the nozzle and other parts of the vortex tube is shown in FIG. 10. Other dimensions of the nozzle: same as the first embodiment.
[0056] effect:
[0057] The inlet pressure is 0.4MPa (absolute pressure), the inlet temperature is 24°C, the hot end pipe is 140mm long, and the number of nozzles is 3. The nozzle vortex tube of the present invention has a cold flow rate of 56.2%, reaching the lowest cold end temperature of -5.5°C; and under the same test conditions, using an ordinary rectangular nozzle, the vortex tube reaches the lowest cold end temperature when the cold flow rate is 48.5% Temperature -0.7°C. When the cold flow rate of the nozzl...
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