Double-inlet vortex tube

Abstract

The utility model 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 air flow 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]

[0002] This utility model relates to the field of refrigeration technology, and in particular to a dual-inlet vortex tube. [Background Technology]

[0004] A vortex tube is a mechanical device primarily used to separate high-pressure gas into cold and hot streams, which then flow out from separate outlet pipes at both ends. It can be used for cooling electronic equipment or for rapidly cooling components. Its working principle involves introducing external high-pressure gas into the vortex tube, where it expands and accelerates, creating a high-speed vortex within the tube. The pressure difference between the hot and cold outlet pipes causes the accelerated gas to flow back, separating into hot and cold streams, which are then output separately through the outlet pipes for cooling or heating.

[0005] Existing vortex tubes are equipped with a hot-end control valve. By adjusting the opening size of the hot-end control valve, the ratio of hot and cold airflows can be adjusted, thereby controlling the temperature and flow rate of the cold-end airflow and thus adjusting the cooling effect of the vortex tube. However, since the cold-end airflow mainly relies on the cold airflow at the axis encountering the hot-end control valve and flowing back to the cold-end outlet, the reverse flow of cold airflow encounters the hot airflow, causing cold flow loss, resulting in poor cooling efficiency and effect of the vortex tube. At the same time, controlling the temperature and flow rate of the cold-end airflow by adjusting the opening size of the hot-end control valve has many uncertainties and uncontrollable links, making it impossible to precisely control the cooling effect of the vortex tube. [Utility Model Content]

[0007] To address the current problems of backflow in vortex tubes, which leads to cold air loss and poor cooling efficiency and effect, as well as the inability to precisely control the cooling effect of vortex tubes, this invention proposes a dual-inlet vortex tube.

[0008] This utility model is achieved by the following technical solution:

[0009] A dual-inlet vortex tube includes a cold-end tube and a hot-end tube. A separation orifice plate for separating hot and cold airflows 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 side of the hot-end tube near the cold-end tube. A vortex chamber for separating the high-pressure gas into hot and cold airflows is provided inside the hot-end tube. A gas supply type pressure balancing device for continuously supplying gas to push the cold airflow towards the cold-end tube and drive the hot airflow out is provided on the side of the hot-end tube away from the cold-end tube.

[0010] As described above, in a dual-inlet vortex tube, the air-supply type pressure balancing device includes an air supply mechanism for introducing airflow to maintain the pressure balance of hot and cold airflows in the vortex chamber, and an exhaust mechanism for discharging hot airflow.

[0011] As described above, in a dual-inlet vortex tube, the air supply mechanism includes an air supply pipe for introducing airflow and a sleeve that houses the air supply pipe. The sleeve is used to adjust the position of the air supply pipe inside the hot end of the tube to adjust the cooling effect of the vortex tube.

[0012] As described above, in a dual-inlet vortex tube, the air supply pipe has an outlet and an inlet. The outlet is a conical opening, smaller than the inlet, so that the incoming airflow has sufficient kinetic energy to blow the cold airflow in the vortex chamber toward the cold end pipe for discharge.

[0013] As described above, in a dual-inlet vortex tube, the exhaust mechanism includes an airflow path formed between the outer wall of the supply pipe, the inner wall of the hot-end pipe, and the inner wall of the sleeve.

[0014] As described above, in a dual-inlet vortex tube, the air supply mechanism further includes an anti-deviation component to prevent the sleeve from rotating and a positioning component to position the sleeve.

[0015] As described above, in a dual-inlet vortex tube, the anti-deviation component includes a protrusion on the hot end tube and a groove on the inner wall of the sleeve, wherein the protrusion and the groove form a keyway fit.

[0016] As described above, in a dual-inlet vortex tube, the positioning assembly includes a positioning groove formed on the sleeve and a positioning element for positioning in conjunction with the positioning groove. The positioning groove and the positioning element cooperate to position the sleeve so that it can be fixed in place after it has been moved to a suitable position.

[0017] As described above, in a dual-inlet vortex tube, multiple connectors are provided between the air supply pipe and the sleeve so that the air supply pipe moves synchronously when the sleeve moves.

[0018] As described above, in a dual-inlet vortex tube, the adjustment range of the position of the sleeve regulating air supply pipe inside the hot end tube is 15-65mm.

[0019] The airflow velocity entering the air supply pipe is 20-80 m / s, and the inlet pressure is 0.1-0.3 MPa;

[0020] The inlet pressure of the high-pressure gas pipe is 0.2-0.6 MPa.

[0021] A pressure-stabilizing cavity is provided between the high-pressure gas pipe and the hot-end pipe for stabilizing the incoming high-pressure gas. The hot-end pipe is provided with a flow channel for distributing the stabilized high-pressure gas to the vortex chamber, so that a high-speed rotating vortex can be formed in the vortex chamber.

[0022] Compared with the prior art, the dual-inlet vortex tube proposed in this utility model has the following beneficial effects:

[0023] 1. The dual-inlet vortex tube proposed in this utility model includes a gas-supply type pressure balancing device. This gas-supply type pressure balancing device can maintain the pressure balance of the cold and hot airflows in the vortex chamber through the gas supply mechanism, so that the cold airflow in the vortex chamber can be quickly blown to the cold end tube for discharge, reducing the loss of cold air caused by contact with the hot airflow during the counterflow process and improving the cooling efficiency. At the same time, by adjusting the inlet pressure of the high-pressure inlet pipe or adjusting the airflow speed and inlet pressure of the gas supply mechanism, the temperature and flow rate of the cold end airflow can be precisely controlled, so that users can flexibly adjust the cooling or heating effect of the vortex tube according to different application scenarios.

[0024] 2. The gas supply mechanism proposed in this utility model includes a gas supply pipe and a sleeve. The position of the gas supply pipe in the vortex chamber can be adjusted through the sleeve, which can achieve different cooling effects. This allows for precise control of the temperature and flow rate of the cold end airflow, enabling users to flexibly adjust the cooling or heating effect of the vortex tube according to different application scenarios.

[0025] 3. The positioning mechanism proposed in this utility model includes a protrusion on the hot end tube and a groove on the inner wall of the sleeve. The protrusion and the groove form a keyway fit, which can effectively prevent the sleeve from rotating and shifting 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. It can also achieve precise control of the position of the air supply pipe, thereby achieving precise adjustment of the temperature and flow rate of the cold end airflow, so that the vortex tube can meet the adjustment requirements of different cooling effects.

[0026] 4. The pressure stabilizing chamber proposed in this utility model can effectively reduce the fluctuations when high-pressure gas enters the vortex tube, ensuring that the gas pressure and flow rate 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 hot and cold air. [Attached Image Description]

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0030] Figure 2This is an exploded view of the present invention;

[0031] Figure 3 This is a cross-sectional schematic diagram of the present invention;

[0032] Figure 4 for Figure 3 Enlarged view of region A;

[0033] Figure 5 This is a schematic diagram of the gas supply mechanism of this utility model;

[0034] Figure 6 for Figure 5 A cross-sectional schematic diagram;

[0035] Figure 7 This is a rear view schematic diagram of the gas supply mechanism of this utility model;

[0036] Figure 8 This is another structural schematic diagram of the present invention;

[0037] Figure 9 for Figure 8 A cross-sectional schematic diagram.

Detailed Implementation Methods

[0039] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0040] Specific embodiments, combined with Figures 1 to 9As shown, the technical solution of this utility model is further explained. A dual-inlet vortex tube includes a cold end tube 10 and a hot end tube 11. A separation orifice plate 12 for separating cold and hot airflows 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 near the cold end tube 10. A vortex chamber 30 for separating high-pressure gas into high-energy hot airflow and low-energy cold airflow is provided inside the hot end tube 11. A gas supply type pressure balancing device 40 for continuously supplying gas to push the cold airflow towards the cold end tube 10 and drive the hot airflow out is provided on the side of the hot end tube 11 away from the cold end tube 10. The gas supply type pressure balancing device 40 includes a gas supply mechanism 41 for introducing gasflow to maintain the pressure balance of cold and hot airflows in the vortex chamber 30 and an exhaust mechanism 42 for discharging hot airflow. The vortex tube maintains a pressure balance between hot and cold airflows within the vortex chamber 30 via the air supply mechanism 41. This allows the cold airflow within the vortex chamber 30 to be quickly blown towards the cold end pipe 10 for discharge, reducing the loss of cooling capacity caused by contact with hot airflow during the counter-current process and improving cooling efficiency. Simultaneously, by adjusting the intake pressure of the high-pressure intake pipe 20 or adjusting the airflow speed and intake pressure of the air supply mechanism 41, the temperature and flow rate of the cold end airflow can be precisely controlled, allowing users to flexibly adjust the cooling or heating effect of the vortex tube according to different application scenarios.

[0041] Furthermore, as a preferred embodiment of this solution and not a limitation, the gas supply mechanism 41 is used for the gas supply pipe 411 through which the airflow is introduced and the sleeve 412 that houses the gas supply pipe 411. The sleeve 412 is used to adjust the position of the gas supply pipe 411 inside the hot end pipe 11 so as to adjust the cooling effect of the vortex tube.

[0042] Furthermore, as a preferred embodiment of this solution and not a limitation, a plurality of connectors 43 are provided between the air supply pipe 411 and the sleeve 412 so that the air supply pipe 411 moves synchronously when the sleeve 412 moves.

[0043] The sleeve 412 can move left and right along the hot end tube 11 to adjust the position of the air supply tube 411 inside the hot end tube 11. The adjustment range of the sleeve 412 for adjusting the position of the air supply tube 411 inside the hot end tube 11 is 15-65mm.

[0044] Furthermore, the connector 43 is a strip rib, and there are three connectors 43 arranged in a circle. In specific implementation, the number and shape of the connectors 43 can be adjusted according to actual needs.

[0045] In this embodiment, by adjusting the position of the air supply pipe in the vortex chamber, different cooling effects can be achieved, thereby enabling precise control of the temperature and flow rate of the cold end airflow. This allows users to flexibly adjust the cooling or heating effect of the vortex tube according to different application scenarios.

[0046] Furthermore, as a preferred embodiment of this solution and not a limitation, the air supply pipe 411 is provided with an air outlet 4111 and an air inlet 4112. The air outlet 411 of the air supply pipe 411 is smaller than the air inlet 412, so that the incoming airflow has sufficient kinetic energy to blow the cold airflow in the vortex chamber 30 toward the cold end pipe 10 for discharge.

[0047] 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 to enable the rapid and effective discharge of hot air.

[0048] In addition, the air velocity of the air supply pipe 411 is 20-80 m / s, and the air pressure is 0.1-0.3 MPa.

[0049] In this embodiment, the conical air outlet design helps reduce eddies and turbulence in the hot airflow, allowing the hot airflow to be discharged more smoothly and quickly. The air outlet of the air supply pipe is smaller than the air inlet, which can create a higher airflow velocity at the air outlet, thereby more effectively pushing the cold airflow out of the cold end pipe, reducing the mixing of cold and hot airflows during the backflow process, and improving cooling efficiency. At the same time, the smaller air outlet allows for more precise adjustment of the ratio and temperature of the cold and hot airflows, thereby better controlling the temperature and flow rate of the cold end airflow and meeting the user's cooling effect requirements in different application scenarios.

[0050] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the exhaust mechanism 42 includes an airflow 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.

[0051] In this embodiment, the exhaust mechanism can more effectively discharge hot airflow outside the hot end tube, thereby enabling the adjustment of the ratio of hot and cold airflow in the vortex chamber, and thus effectively adjusting the flow rate and temperature of the cold end airflow, improving the cooling effect and cooling efficiency of the vortex tube.

[0052] Furthermore, as a preferred embodiment of this solution and not a limitation, the gas supply pipe 411 and the sleeve 412 are made of high-pressure resistant and corrosion-resistant metal materials. The gas supply pipe 411 and the sleeve 412 may also be made of other materials with high pressure resistance, corrosion resistance and a wide temperature range.

[0053] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the gas supply mechanism 41 further 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.

[0054] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the anti-deviation component 413 includes a protrusion 4131 disposed on the hot end tube 11 and a groove 4132 disposed on the inner wall of the sleeve 412, wherein the protrusion 4131 and the groove 4132 form a keyway fit.

[0055] In this embodiment, the keyway-fitting convex and concave grooves effectively prevent the sleeve from rotating and shifting on the hot-end tube, avoiding changes in the airflow path, thereby reducing the occurrence of unexpected failures and improving the stability and reliability of the equipment. The keyway-fitting convex and concave grooves can also achieve precise control of the position of the air supply pipe, thereby enabling precise adjustment of the airflow and temperature at the cold end, allowing the vortex tube to meet the adjustment requirements for different cooling effects. At the same time, the keyway-fitting design allows users to adjust the position of the air supply pipe in the vortex chamber through simple sliding operations, featuring simple structure and convenient operation.

[0056] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the positioning component 414 includes a positioning groove 4141 formed on the sleeve 412 and a positioning element 4142 for positioning in cooperation with the positioning groove 4141. The positioning groove 4141 and the positioning element 4142 cooperate to position the sleeve 412 so that it can be fixed in place after it has been moved to a suitable position.

[0057] The positioning component 4142 is a Phillips head flathead screw. In specific implementation, the positioning component 4142 can also be replaced with other components that can cooperate with the positioning groove 4141 for positioning.

[0058] In this embodiment, the design of the positioning groove and positioning component can ensure that the position of the air supply pipe is fixed after adjustment, avoiding the displacement of the adjusted position due to vibration or external factors, thereby affecting the cooling effect and cooling efficiency.

[0059] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, a pressure stabilizing chamber 21 for stabilizing the incoming 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.

[0060] The flow channel 22 is provided in multiple ways to make the high-pressure gas more evenly distributed in the vortex chamber 30.

[0061] In this embodiment, the design of the pressure stabilizing chamber can effectively reduce the fluctuations when high-pressure gas enters the vortex tube, ensuring that the gas pressure and flow rate 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 hot and cold air.

[0062] The design of the flow channel ensures that the high-pressure gas after pressure stabilization can enter the vortex chamber at a consistent speed and direction, thereby forming a high-speed rotating vortex in the vortex chamber, which helps to improve the separation efficiency of hot and cold air and enhance the cooling effect.

[0063] Furthermore, as a preferred embodiment of this solution and not a limitation, the inlet pressure of the high-pressure gas in the high-pressure gas pipe 20 is 0.2-0.6 MPa.

[0064] Furthermore, as a preferred embodiment of this solution and not a limitation, the high-pressure gas pipe 20 is made of a metal material that is resistant to high pressure and corrosion. 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 range.

[0065] Furthermore, as a preferred embodiment of this solution and not a limitation, when the inlet pressure of the high-pressure gas in the high-pressure gas pipe 20 is 0.4 MPa, the adjustment distance of the gas supply pipe 411 in the hot end pipe 11 is 55 mm, the airflow velocity of the gas in the gas supply pipe 411 is 45 m / s, and the inlet pressure is 0.1 MPa, the cooling effect of the vortex tube reaches its optimal level.

[0066] Furthermore, as a preferred embodiment of this solution and 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 may also be made of other materials with high pressure resistance, corrosion resistance and a wide temperature range.

[0067] The working principle of this embodiment is as follows:

[0068] This utility model proposes a dual-inlet vortex tube that abandons the traditional hot-end regulating valve design. Through the cooperation of the high-pressure inlet pipe 20 and the air supply pressure balancing device 40, it avoids backflow in the vortex chamber 30, thereby improving refrigeration efficiency. The specific principle is as follows:

[0069] First, high-pressure gas is introduced through the high-pressure intake pipe 20. After the high-pressure gas is stabilized in the pressure stabilizing chamber 21, it enters the vortex chamber 30 through the flow channel 22. In the vortex chamber 30, the high-pressure gas is separated into high-energy hot gas flow and low-energy cold gas flow due to centrifugal force. The high-energy hot gas flow moves along the pipe wall towards the hot end pipe 11 and is discharged through the exhaust mechanism 42. The low-energy cold gas 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 air pressure balance of the hot and cold gas flow in the vortex chamber 30. This allows the cold gas flow at the axis to be quickly blown to the connection between the cold end pipe 10 and the hot end pipe 11 and discharged from the cold end pipe 10 through the separation orifice plate 12. At the same time, the hot gas 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 pipe 11, and the inner wall of the sleeve 412. By introducing airflow through the air supply pipe 411, the cold airflow is quickly guided to the cold end pipe 10 for discharge, which can prevent the cold airflow from mixing with the hot airflow in the vortex chamber 30, reduce the loss of cold airflow, and improve the refrigeration efficiency.

[0070] To adjust the cooling effect of the vortex tube, as well as the temperature and flow rate of the cold-end airflow, this can be achieved by adjusting the inlet pressure of the high-pressure inlet pipe 20 or by adjusting the airflow velocity, inlet pressure, and position of the airflow entering the air supply pipe 411 of the air supply mechanism 41. In this embodiment, the cooling effect of the vortex tube is optimal when the inlet pressure of the high-pressure gas pipe 20 is 0.4 MPa, the adjustment distance of the air supply pipe 411 within the hot-end pipe 11 is 55 mm, the airflow velocity entering the air supply pipe 411 is 45 m / s, and the inlet pressure is 0.1 MPa.

[0071] Those skilled in the art should understand that the above description is one embodiment provided in conjunction with specific content, and does not imply that the specific implementation of this utility model is limited to these descriptions. Furthermore, due to differences in industry naming conventions, it is not limited to the above names or English names. Any methods or structures similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered within the scope of protection of this utility model.

Claims

1. A dual-inlet vortex tube, characterized in that, It includes a cold end pipe (10) and a hot end pipe (11). The connection between the cold end pipe (10) and the hot end pipe (11) is provided with a separation orifice plate (12) for separating the hot and cold airflows. The hot end pipe (11) is connected to a high-pressure gas pipe (20) for introducing high-pressure gas on the side near the cold end pipe (10). The hot end pipe (11) is provided with a vortex chamber (30) for separating the high-pressure gas into hot airflow and cold airflow. The side of the hot end pipe (11) away from the cold end pipe (10) is provided with a continuous gas supply type pressure balancing device (40) for pushing the cold airflow towards the cold end pipe (10) and driving the hot airflow out.

2. The dual-inlet vortex tube according to claim 1, characterized in that, The gas supply type pressure balancing device (40) includes a gas supply mechanism (41) for supplying air to maintain the pressure balance of hot and cold air in the vortex chamber (30) and an exhaust mechanism (42) for discharging hot air.

3. A dual-inlet vortex tube according to claim 2, characterized in that, The gas supply mechanism (41) includes a gas supply pipe (411) for introducing airflow and a sleeve (412) for fitting the gas supply pipe (411) inside. The sleeve (412) is used to adjust the position of the gas supply pipe (411) inside the hot end pipe (11) to adjust the cooling effect of the vortex tube.

4. A dual-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 and is smaller than the air inlet (4112) so that the incoming airflow has enough kinetic energy to blow the cold airflow in the vortex chamber (30) toward the cold end pipe (10) for discharge.

5. A dual-inlet vortex tube according to claim 3, characterized in that, The exhaust mechanism (42) includes an airflow 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 dual-inlet vortex tube according to claim 3, characterized in that, The gas supply mechanism (41) further 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).

7. A dual-inlet vortex tube according to claim 6, characterized in that, The anti-deviation component (413) includes a protrusion (4131) on the hot end tube (11) and a groove (4132) on the inner wall of the sleeve (412), wherein the protrusion (4131) and the groove (4132) form a keyway fit.

8. A dual-inlet vortex tube according to claim 6, characterized in that, The positioning component (414) includes a positioning groove (4141) formed on the sleeve (412) and a positioning element (4142) for positioning in cooperation with the positioning groove (4141). The positioning groove (4141) and the positioning element (4142) cooperate to position the sleeve (412) so that the sleeve (412) can be fixed after moving to a suitable position.

9. A dual-inlet vortex tube according to claim 3, characterized in that, Multiple connectors (43) are provided between the air supply pipe (411) and the sleeve (412) so that the air supply pipe (411) moves synchronously when the sleeve (412) moves.

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

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