Double-inlet vortex tube

Abstract

The invention discloses a double-inlet vortex tube which comprises a cold end tube and a hot end tube, a separation pore plate used for separating cold and hot airflow is arranged at the joint of the cold end tube and the hot end tube, and the hot end tube is connected with a high-pressure gas tube used for introducing high-pressure gas. A vortex chamber used for separating high-pressure gas into hot air flow and cold air flow is arranged in the hot end pipe, and an air supply type air pressure balancing device used for pushing the cold air flow to flow towards the cold end pipe and driving the hot air flow to flow out is arranged on the side, away from the cold end pipe, of the hot end pipe. According to the vortex tube, cold air flow in the vortex chamber can be quickly blown to the cold end tube to be discharged through the air supply mechanism, so that the cold loss caused by contact with hot air flow in the countercurrent process is reduced, and the refrigeration efficiency is improved; and meanwhile, the temperature and the flow of the cold-end airflow are accurately controlled by adjusting the air inlet pressure of the high-pressure air inlet pipe or adjusting the airflow speed and the air inlet pressure of the airflow introduced into the air supply mechanism.

Description

[Technical field] The invention relates to the technical field of refrigeration, and in particular to a double-inlet vortex tube. [Background technology] A vortex tube is a mechanical device that is mainly used to separate high-pressure gas into cold flow and hot flow, and then output them from the output tubes at both ends. It can be used to cool down electronic equipment or parts that need to be cooled sharply. Its working principle is mainly to introduce external high-pressure gas into the vortex tube, expand and accelerate the gas through the vortex tube, and then form a high-speed vortex in the vortex tube. Through the pressure difference between the cold and hot end output tubes at both ends, the accelerated and expanded airflow forms a reflux gas, which is then separated and transformed into cold and hot airflows, and then the cold and hot airflows are separated and output through the output tubes at both ends for cooling or heating.

[0003] The existing vortex tube is provided with a hot end control valve. By adjusting the opening size of the hot end control valve, the ratio of the cold and hot airflows can be adjusted, so that the temperature and flow rate of the cold end airflow can be controlled, and then the different cooling effects of the vortex tube can be adjusted. However, since the cold end airflow is mainly formed by the cold airflow at the axis encountering the hot end control valve and then flowing back to the cold end outlet, the counterflowing cold airflow will encounter the hot airflow to cause cold flow loss, which makes the vortex tube's cooling efficiency and cooling effect poor; at the same time, by adjusting the opening size of the hot end control valve to control the temperature and flow rate of the cold end airflow, there are many uncertain factors and uncontrollable links, making it impossible to accurately control the cooling effect of the vortex tube. [Summary of the invention] In order to solve the problem that the current vortex tube has a backflow phenomenon, which causes cold air flow loss, resulting in poor refrigeration efficiency and refrigeration effect of the vortex tube, and the technical problem that the refrigeration effect of the vortex tube cannot be accurately controlled, the present invention proposes a double-inlet vortex tube.

[0005] The present invention is achieved by the following technical solutions: A double-inlet vortex tube comprises a cold end tube and a hot end tube, wherein a separation orifice plate for separating cold and hot air flows is provided at the connection between the cold end tube and the hot end tube, a high-pressure gas pipe for introducing high-pressure gas is connected to the hot end tube near the cold end tube, a vortex chamber for separating the high-pressure gas into a hot air flow and a cold air flow is provided in the hot end tube, and a continuous air supply type air pressure balance device for pushing the cold air flow to flow in the direction of the cold end tube and driving the hot air flow to flow out is provided on the side of the hot end tube away from the cold end tube.

[0006] In the double-inlet vortex tube as described above, the air supply type air pressure balancing device comprises an air supply mechanism for introducing air flow to maintain the air pressure balance of the cold and hot air flows in the vortex chamber, and an exhaust mechanism for exhausting the hot air flow.

[0007] In a double-inlet vortex tube as described above, the air supply mechanism includes an air supply pipe for introducing air flow and a sleeve in which the air supply pipe is sleeved, and the sleeve is used to adjust the position of the air supply pipe in the hot end pipe to adjust the cooling effect of the vortex tube.

[0008] In a double-inlet vortex tube as described above, the air supply pipe is provided with an air outlet and an air inlet, the air outlet is a conical opening, and the air outlet is smaller than the air inlet, so that the incoming air flow has sufficient kinetic energy to blow the cold air flow in the vortex chamber to the cold end pipe for discharge.

[0009] In the double-inlet vortex tube as described above, the exhaust mechanism includes an air flow path formed between the outer wall of the air supply pipe and the inner wall of the hot end pipe and the inner wall of the sleeve.

[0010] In the double-inlet vortex tube as described above, the air supply mechanism further comprises an anti-deviation component for preventing the sleeve from rotating and deviating, and a positioning component for positioning the sleeve.

[0011] In the double-inlet vortex tube as described above, the anti-deflection component includes a convex strip arranged on the hot end tube and a groove arranged on the inner wall of the sleeve, and the convex strip and the groove form a keyway fit.

[0012] In the double-inlet vortex tube as described above, the positioning assembly includes a positioning groove opened on the sleeve and a positioning piece for cooperating with the positioning groove for positioning. The positioning groove cooperates with the positioning piece for positioning, so that the sleeve can be positioned and fixed after being moved to a suitable position.

[0013] In the double-inlet vortex tube as described above, a plurality of connecting pieces are provided between the air supply pipe and the sleeve, so that the air supply pipe also moves synchronously when the sleeve moves.

[0014] A double-inlet vortex tube as described above, wherein the sleeve adjusts the position of the air supply pipe in the hot end pipe within a range of 15-65 mm; The air flow velocity of the air supply pipe is 20-80m / s, and the air inlet pressure is 0.1-0.3Mpa; The inlet pressure of the high-pressure gas introduced into the high-pressure gas pipe is 0.2-0.6Mpa.

[0015] A pressure stabilizing chamber for stabilizing the pressure of the introduced high-pressure gas is provided between the high-pressure gas pipe and the hot end pipe, and a flow channel for distributing the stabilized high-pressure gas to the vortex chamber is provided in the hot end pipe, so that a high-speed rotating vortex can be formed in the vortex chamber.

[0016] Compared with the prior art, the double-inlet vortex tube proposed in the present invention has the following beneficial effects: 1. The double-inlet vortex tube proposed in the present invention includes an air supply type air pressure balancing device, which can maintain the air pressure balance of cold and hot air flows in the vortex chamber through the air supply mechanism, so that the cold air flow in the vortex chamber can be quickly blown to the cold end pipe for discharge, reducing the cold loss caused by contact with the hot air flow during the countercurrent process and improving the refrigeration efficiency; at the same time, by adjusting the air intake pressure of the high-pressure air intake pipe or adjusting the air flow speed and air intake pressure of the air supply mechanism, the temperature and flow rate of the cold end air flow can be accurately controlled, so that the user can flexibly adjust the cooling effect or heating effect of the vortex tube according to different application scenarios.

[0017] 2. The air supply mechanism proposed in the present invention includes an air supply pipe and a sleeve. The position of the air supply pipe in the vortex chamber can be adjusted through the sleeve, so as to achieve different cooling effects, thereby achieving precise control of the temperature and flow rate of the cold end airflow, so that the user can flexibly adjust the cooling effect or heating effect of the vortex tube according to different application scenarios.

[0018] 3. The positioning mechanism proposed in the present invention includes a convex strip arranged on the hot end tube and a groove arranged on the inner wall of the sleeve. The convex strip and the groove form a keyway fit, which can effectively prevent the sleeve from rotating and deviating on the hot end tube, avoid changes in the air flow path, thereby reducing the occurrence of unexpected failures and improving the stability and reliability of the equipment; it can also achieve precise control of the position of the air supply pipe, thereby achieving precise adjustment of the cold end air flow temperature and flow, so that the vortex tube can meet the adjustment requirements of different refrigeration effects.

[0019] 4. The pressure-stabilizing chamber proposed in the present invention can effectively reduce the fluctuation of high-pressure gas when entering the vortex tube, ensure that the gas pressure and flow entering the vortex chamber tend to be stable, so that a more uniform and stable vortex can be formed in the vortex chamber, thereby improving the separation efficiency of cold and hot air flows.

Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the decomposition of the present invention; Figure 3 It is a cross-sectional schematic diagram of the present invention; Figure 4 for Figure 3 A magnified image of area A; Figure 5 It is a schematic diagram of the structure of the gas supply mechanism of the present invention; Figure 6 for Figure 5 Schematic cross-sectional view of ; Figure 7It is a rear view structural schematic diagram of the air supply mechanism of the present invention; Figure 8 Another structural schematic diagram of the present invention; Fig. 9 for Figure 8 Schematic cross-section diagram of . [Specific implementation method] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] Specific embodiments, combined with Figures 1 to 9 As shown, the technical scheme of the present invention is further illustrated, a double-inlet vortex tube, comprising a cold end tube 10 and a hot end tube 11, wherein a separation orifice plate 12 for separating cold and hot air flows is provided at the connection between the cold end tube 10 and the hot end tube 11, a high-pressure gas pipe 20 for introducing high-pressure gas is provided on the side of the hot end tube 11 close to the cold end tube 10, a vortex chamber 30 for separating the high-pressure gas into a high-energy hot air flow and a low-energy cold air flow is provided in the hot end tube 11, and an air supply type air pressure balancing device 40 for continuously supplying air for pushing the cold air flow to flow toward the cold end tube 10 and driving the hot air flow to flow out is provided on the side of the hot end tube 11 away from the cold end tube 10, wherein the air supply type air pressure balancing device 40 comprises an air supply mechanism 41 for introducing air flow to maintain the air pressure balance of the cold and hot air flows in the vortex chamber 30, and an exhaust mechanism 42 for exhausting the hot air flow. The vortex tube can maintain the air pressure balance of the cold and hot air flows in the vortex chamber 30 through the air supply mechanism 41, so that the cold air flow in the vortex chamber 30 can be quickly blown to the cold end tube 10 for discharge, reducing the cold loss caused by contact with the hot air flow during the backflow process and improving the refrigeration efficiency; at the same time, by adjusting the air intake pressure of the high-pressure air intake pipe 20 or adjusting the air flow speed and air intake pressure of the air supply mechanism 41, the temperature and flow rate of the cold end air flow can be accurately controlled, so that the user can flexibly adjust the cooling effect or heating effect of the vortex tube according to different application scenarios.

[0024] Furthermore, as a preferred implementation mode of the present invention but not a limitation, the air supply mechanism 41 is used for an air supply pipe 411 for introducing air flow and a sleeve 412 for sleeve-mounting the air supply pipe 411, and the sleeve 412 is used for adjusting the position of the air supply pipe 411 in the hot end tube 11 to adjust the cooling effect of the vortex tube.

[0025] Furthermore, as a preferred embodiment of the present invention but not limiting, a plurality of connectors 43 are provided between the air supply pipe 411 and the sleeve 412, so that when the sleeve 412 moves, the air supply pipe 411 also moves synchronously; The sleeve 412 can move left and right along the hot end pipe 11 to adjust the position of the air supply pipe 411 in the hot end pipe 11. The adjustment range of the sleeve 412 for adjusting the position of the air supply pipe 411 in the hot end pipe 11 is 15-65 mm. In addition, the connecting member 43 is a strip rib, and there are three connecting members 43 . The three connecting members 413 are arranged in a circle. In a specific implementation process, the number and shape of the connecting members 43 can be adjusted accordingly according to actual needs.

[0026] In this embodiment, by adjusting the position of the air supply pipe in the vortex chamber, different cooling effects can be adjusted, thereby achieving precise control of the temperature and flow rate of the cold end airflow, so that the user can flexibly adjust the cooling effect or heating effect of the vortex tube according to different application scenarios.

[0027] Further, as a preferred embodiment of the present invention but not limiting, the air supply pipe 411 is provided with an air outlet 4111 and an air inlet 4112, and the air outlet 411 of the air supply pipe 411 is smaller than the air inlet 412, so that the air flow entering has sufficient kinetic energy to blow the cold air flow in the vortex chamber 30 to the cold end pipe 10 for discharge; The air outlet 411 is a conical opening, and a smooth conical surface is formed between the air outlet 411 and the air supply pipe 411, so that the hot air flow can be discharged quickly and effectively.

[0028] In addition, the air flow velocity of the air supply pipe 411 is 20-80 m / s, and the air intake pressure is 0.1-0.3 Mpa.

[0029] In this embodiment, the design of the tapered air outlet helps to reduce the eddy and turbulence of the hot air flow, so that the hot air flow can be discharged more smoothly and quickly; the air outlet of the air supply pipe is smaller than the air inlet, so a higher air flow velocity can be formed at the air outlet, so that the cold air flow can be more effectively pushed out from the cold end pipe, reducing the mixing of the cold air flow and the hot air flow during the backflow process, and improving the cooling efficiency; at the same time, the smaller air outlet can more accurately adjust the ratio and temperature of the cold and hot air flows, so as to better control the temperature and flow of the cold end air flow, and meet the user's demand for cooling effect in different application scenarios.

[0030] Further, as a preferred embodiment of the present solution but not a limitation, the exhaust mechanism 42 includes an air flow path formed between the outer wall of the air supply pipe 411 and the inner wall of the hot end pipe 11 and the inner wall of the sleeve 412 .

[0031] In this embodiment, the exhaust mechanism can more effectively discharge the hot air flow out of the hot end tube, thereby adjusting the ratio of the cold and hot air flows in the vortex chamber, and then effectively adjusting the flow rate and temperature of the cold end air flow, thereby improving the cooling effect and cooling efficiency of the vortex tube.

[0032] Furthermore, as a preferred implementation of the present scheme but not a limitation, the air supply pipe 411 and the sleeve 412 are made of high pressure resistant and corrosion resistant metal materials. The air supply pipe 411 and the sleeve 412 can also be made of other materials that are resistant to high pressure, corrosion and have a wide temperature range.

[0033] Furthermore, as a preferred implementation of the present solution but not a limitation, the air supply mechanism 41 also includes an anti-deviation component 413 for preventing the sleeve 412 from rotating and deviating, and a positioning component 414 for positioning the sleeve 412 .

[0034] Furthermore, as a preferred implementation of the present solution but not a limitation, the anti-deflection component 413 includes a convex strip 4131 arranged on the hot end tube 11 and a groove 4132 arranged on the inner wall of the sleeve 412, and the convex strip 4131 and the groove 4132 form a keyway fit.

[0035] In this embodiment, the convex strips and grooves matched with the keyway can effectively prevent the sleeve from rotating and deviating on the hot end tube, avoid changes in the airflow path, thereby reducing the occurrence of unexpected failures and improving the stability and reliability of the equipment; the convex strips and grooves matched with the keyway can also accurately control the position of the air supply pipe, thereby achieving precise adjustment of the cold end airflow flow and temperature, so that the vortex tube can meet the adjustment requirements of different refrigeration effects; at the same time, the keyway matching design allows the user to adjust the position of the air supply pipe in the vortex chamber through a simple sliding operation, which has a simple structure and convenient operation.

[0036] Further, as a preferred embodiment of the present invention but not limiting, the positioning assembly 414 includes a positioning groove 4141 provided on the sleeve 412 and a positioning member 4142 for cooperating with the positioning groove 4141 for positioning. The positioning groove 4141 cooperates with the positioning member 4142 for positioning, so that the sleeve 412 can be positioned and fixed after being moved to a suitable position. The positioning member 4142 is a cross flat head screw. In a specific implementation process, the positioning member 4142 can also be replaced with other components that can cooperate with the positioning groove 4141 for positioning.

[0037] In this embodiment, the design of the positioning groove and the positioning member can ensure that the air supply pipe is fixed in position after adjustment, thereby avoiding the deviation of the adjusted position due to vibration or external factors, thereby affecting the cooling effect and cooling efficiency.

[0038] Further, as a preferred embodiment of the present invention but not limiting, a pressure stabilizing chamber 21 for stabilizing the pressure of the high-pressure gas introduced is provided between the high-pressure gas pipe 20 and the hot end pipe 11, and a flow channel 22 for distributing the stabilized high-pressure gas to the vortex chamber 30 is provided in the hot end pipe 11, so that a high-speed rotating vortex can be formed in the vortex chamber 30; There are multiple flow channels 22 to make the high-pressure gas more evenly distributed in the vortex chamber 30 .

[0039] In this embodiment, the design of the pressure stabilizing chamber can effectively reduce the fluctuation of high-pressure gas when entering the vortex tube, ensure that the pressure and flow of gas entering the vortex chamber tend to be stable, so that a more uniform and stable vortex can be formed in the vortex chamber, and the separation efficiency of cold and hot airflows can be improved; The design of the flow channel can ensure that the stabilized high-pressure gas can enter the vortex chamber at a consistent speed and direction, thereby forming a high-speed rotating vortex in the vortex chamber, which in turn helps to improve the separation efficiency of cold and hot air flows and enhance the refrigeration effect.

[0040] Furthermore, as a preferred implementation of the present solution but not a limitation, the intake pressure of the high-pressure gas introduced into the high-pressure gas pipe 20 is 0.2-0.6Mpa.

[0041] Furthermore, as a preferred implementation of the present scheme but not a limitation, the high-pressure gas pipe 20 is made of a high-pressure resistant and corrosion-resistant metal material. The high-pressure gas pipe 20 may also be made of other materials that are resistant to high pressure, corrosion and have a wide temperature tolerance range.

[0042] Furthermore, as a preferred implementation mode of the present invention but not a limitation, when the intake pressure of the high-pressure gas introduced into the high-pressure gas pipe 20 is 0.4 MPa, the adjustment distance of the air supply pipe 411 in the hot end pipe 11 is 55 mm, the air flow velocity of the air flow introduced into the air supply pipe 411 is 45 m / s, and the intake pressure is 0.1 MPa, the cooling effect of the vortex tube reaches the best.

[0043] Furthermore, as a preferred implementation of the present scheme but not a limitation, the cold end tube 10 and the hot end tube 11 are made of high pressure resistant and corrosion resistant metal materials. The cold end tube 10 and the hot end tube 11 can also be made of other materials with high pressure resistance, corrosion resistance and a wide temperature tolerance range.

[0044] The working principle of this embodiment is as follows: The double-inlet vortex tube proposed in the present invention abandons the design of the traditional vortex tube hot end regulating valve. Through the cooperation of the high-pressure air inlet pipe 20 and the air supply type air pressure balance device 40, the backflow phenomenon in the vortex chamber 30 is avoided, and the refrigeration efficiency is improved. The specific principle is: First, high-pressure gas is introduced through the high-pressure air inlet pipe 20. After the pressure is stabilized in the pressure-stabilizing chamber 21, the high-pressure gas enters the vortex chamber 30 through the flow channel 22. The high-pressure gas is separated into high-energy hot air flow and low-energy cold air flow due to the action of centrifugal force in the vortex chamber 30. The high-energy hot air flow will move along the tube wall toward the hot end tube 11 and be discharged through the exhaust mechanism 42, and the low-energy cold air flow is concentrated at the axis. At this time, the air supply pipe 411 of the air supply mechanism 41 introduces air flow to maintain the pressure balance of the hot and cold air flows in the vortex chamber 30, so that the cold air flow at the axis can be quickly blown to the connection between the cold end tube 10 and the hot end tube 11, and discharged from the cold end tube 10 through the separation orifice plate 12. At the same time, the hot air flow is discharged along the air flow path formed by the outer wall of the air supply pipe 411, the inner wall of the hot end tube 11, and the inner wall of the sleeve 412. The air flow introduced through the air supply pipe 411 quickly guides the cold air flow to the cold end pipe 10 for discharge, which can prevent the cold air flow from mixing with the hot air flow in the vortex chamber 30, reduce the loss of the cold air flow, and improve the refrigeration efficiency.

[0045] If you want to adjust the refrigeration effect of the vortex tube, the temperature and flow rate of the cold-end airflow, you can adjust the intake pressure of the high-pressure intake pipe 20 or adjust the airflow velocity, intake pressure and position of the air supply pipe 411 of the air supply mechanism 41. In this embodiment, when the intake pressure of the high-pressure gas pipe 20 is 0.4Mpa, the adjustment distance of the air supply pipe 411 in the hot-end pipe 11 is 55mm, the airflow velocity of the air supply pipe 411 is 45m / s, and the intake pressure is 0.1Mpa, the refrigeration effect of the vortex tube is optimal.

[0046] Ordinary technicians in the relevant field should understand that the above is an implementation method provided in combination with specific content, and it is not considered that the specific implementation of the present invention is limited to these descriptions. At the same time, due to different industry naming, it is not limited to the above naming, nor is it limited to English naming. Any similarity or similarity with the method, structure, etc. of the present invention, or a number of technical deductions or substitutions made on the premise of the concept of the present invention, should be regarded as the protection scope of the present invention.

Claims

1. A double inlet vortex tube, characterized in that: The invention comprises a cold end tube (10) and a hot end tube (11), wherein a separation orifice plate (12) for separating cold and hot air flows is provided at the connection point between the cold end tube (10) and the hot end tube (11), a high-pressure gas pipe (20) for introducing high-pressure gas is connected to the hot end tube (11) on the side close to the cold end tube (10), a vortex chamber (30) for separating the high-pressure gas into a hot air flow and a cold air flow is provided in the hot end tube (11), and a continuous air supply type air pressure balance device (40) for driving the cold air flow to flow in the direction of the cold end tube (10) and driving the hot air flow to flow out is provided on the side of the hot end tube (11) away from the cold end tube (10).

2. A double-inlet vortex tube according to claim 1, characterized in that: The air supply type air pressure balancing device (40) comprises an air supply mechanism (41) for introducing air flow to maintain the air pressure balance of the cold and hot air flows in the vortex chamber (30), and an exhaust mechanism (42) for exhausting the hot air flow.

3. A double-inlet vortex tube according to claim 2, characterized in that: The air supply mechanism (41) comprises an air supply pipe (411) for introducing air flow and a sleeve (412) sleeved inside the air supply pipe (411); the sleeve (412) is used to adjust the position of the air supply pipe (411) inside the hot end pipe (11) to adjust the cooling effect of the vortex tube.

4. A double-inlet vortex tube according to claim 3, characterized in that: The air supply pipe (411) is provided with an air outlet (4111) and an air inlet (4112); the air outlet (4111) is a conical opening; the air outlet (4111) is smaller than the air inlet (4112) so that the incoming air flow has sufficient kinetic energy to blow the cold air flow in the vortex chamber (30) toward the cold end pipe (10) for discharge.

5. A double-inlet vortex tube according to claim 3, characterized in that: The exhaust mechanism (42) comprises an air flow path formed between the outer wall of the air supply pipe (411), the inner wall of the hot end pipe (11), and the inner wall of the sleeve (412).

6. A double-inlet vortex tube according to claim 3, characterized in that: The air supply mechanism (41) further comprises an anti-deviation component (413) for preventing the sleeve (412) from rotating and deviating, and a positioning component (414) for positioning the sleeve (412).

7. A double-inlet vortex tube according to claim 6, characterized in that: The anti-deflection component (413) comprises a convex strip (4131) provided on the hot end tube (11) and a groove (4132) provided on the inner wall of the sleeve (412), wherein the convex strip (4131) and the groove (4132) form a keyway fit.

8. A double-inlet vortex tube according to claim 6, characterized in that: The positioning assembly (414) comprises a positioning groove (4141) formed on the sleeve (412) and a positioning member (4142) for cooperating with the positioning groove (4141) for positioning. The positioning groove (4141) and the positioning member (4142) cooperate for positioning, so that the sleeve (412) can be positioned and fixed after being moved to a suitable position.

9. A double-inlet vortex tube according to claim 3, characterized in that: A plurality of connecting pieces (43) are provided between the air supply pipe (411) and the sleeve (412), so that when the sleeve (412) moves, the air supply pipe (411) also moves synchronously.

10. A double-inlet vortex tube according to claim 3, characterized in that: The sleeve (412) adjusts the position of the air supply pipe (411) in the hot end pipe (11) within a range of 15-65 mm; The air flow velocity of the air supply pipe (411) is 20-80 m / s, and the air intake pressure is 0.1-0.3 Mpa; The inlet pressure of the high-pressure gas introduced into the high-pressure gas pipe (20) is 0.2-0.6 MPa; A pressure stabilizing chamber (21) for stabilizing the pressure of the introduced high-pressure gas is provided between the high-pressure gas pipe (20) and the hot end pipe (11), and a flow channel (22) for distributing the stabilized high-pressure gas to the vortex chamber (30) is provided in the hot end pipe (11), so that a high-speed rotating vortex can be formed in the vortex chamber (30).

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