Pneumatic refrigeration device

Abstract

The utility model provides a kind of pneumatic refrigeration device, including condenser, condenser is hollow tubular structure, condenser's lateral wall is connected with vortex tube component, vortex tube component imports cold gas into condenser in the direction perpendicular to the axis of condenser, copper core is equipped in vortex tube component, and isolation structure and flow guide structure are equipped on copper core. The device can improve refrigeration effect.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, specifically to a pneumatic refrigeration device. Background Technology

[0002] A vortex cooler, also known as a vortex tube, jet tube, or cold air generator, is a pneumatic cooling device that uses the vortex effect of compressed air to separate hot and cold airflows for localized cooling. Compressed air at a certain pressure is input and expands and accelerates upon entering the nozzle of the vortex tube, flowing in one direction at high speed. During this airflow movement, the outer layer of air heats up, while the inner layer cools down (heating is proportional to flow velocity). When it reaches one end, the cold air flows back along the center of the vortex, forming a cooling source.

[0003] Currently, most vortex tubes on the market lack physical isolation between compressed air and cold air in their copper core structure. This causes the two to interfere with each other, resulting in turbulent airflow, which affects cooling efficiency. Furthermore, the cooling effect is greatly affected by ambient temperature. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this utility model proposes a pneumatic refrigeration device that can improve the refrigeration effect.

[0005] To achieve the above objectives, the pneumatic refrigeration device of this utility model includes a condenser, which is a hollow tubular structure. A vortex tube assembly is connected to the side wall of the condenser. The vortex tube assembly introduces cold air into the condenser in a direction perpendicular to the axis of the condenser. A copper core is provided inside the vortex tube assembly, and an isolation structure and a flow guiding structure are provided on the copper core.

[0006] Furthermore, the vortex tube assembly includes a housing, a copper core disposed inside the housing, and a first tube and a second tube respectively provided at both ends of the housing. The axes of the first tube and the second tube are collinear. The first tube is connected to the side wall of the condenser, and the section of the second tube away from the housing is closed. The side wall of the housing is connected to an external compressed gas generating device.

[0007] Furthermore, the copper core includes a first core and a second core, with one end of the first core and the second core connected together. A first conduit is provided on the axis of the first core, and a second conduit is provided on the axis of the second core, which in turn passes through the second core. The inner diameter of the first conduit is smaller than the inner diameter of the second conduit. The isolation structure includes an isolation ring disposed near a section of the first conduit close to the second conduit. The inner diameter of the isolation ring is the same as that of the first conduit, and the outer diameter of the isolation ring is smaller than the inner diameter of the second conduit. The isolation ring extends within the second conduit in a direction away from the first conduit.

[0008] Furthermore, the outer periphery of the copper core has a groove around its circumference. The groove, together with the side wall of the shell, forms a compressed gas channel for the compressed gas to enter the vortex tube assembly. The first core has a gas guide hole communicating with the compressed gas channel at one end near the second core. The flow guiding structure includes a first flow guide groove disposed at one end of the first core near the second core. The first flow guide groove is disposed around the isolation ring. The outer diameter of the first flow guide groove is larger than the inner diameter of the second pipe. A second flow guide groove is disposed at one end of the second core near the first core. The second flow guide groove is connected to the bottom of the second pipe and communicates with the first flow guide groove. The end of the second flow guide groove near the first flow guide groove has the same outer diameter as the first flow guide groove, and the end of the second flow guide groove away from the first flow guide groove has the same inner diameter as the second pipe.

[0009] Furthermore, the condenser is equipped with coiled condenser tubes, which are connected to an external inlet pipe at the top of the condenser. The bottom of the condenser is equipped with a receiving cavity, the bottom of which is connected to the receiving cavity. A return pipe is connected to the receiving cavity, which extends upward to the top of the condenser and is connected to an external outlet pipe.

[0010] Furthermore, the condenser includes a shell, the inner wall of which is provided with a porous vacuum silicon insulation layer, and the bottom of the condenser is provided with a cold air exhaust port.

[0011] The pneumatic refrigeration device of this invention improves the cooling effect by modifying the copper core structure and separating the parts of the vortex tube structure that need heat dissipation and insulation. At the same time, it improves the heat insulation capacity of the condenser. Attached Figure Description

[0012] The present invention will be further described and explained below with reference to the accompanying drawings.

[0013] Figure 1 This is a cross-sectional view of the pneumatic refrigeration device according to the preferred embodiment of this utility model.

[0014] Figure 2 It is a cross-sectional view used to illustrate the copper core structure.

[0015] Reference numerals: 1. Condenser; 11. Condenser tube; 12. Receiving cavity; 13. Return tube; 14. Shell; 15. Porous vacuum silicon insulation layer; 16. Cold air outlet; 2. Vortex tube assembly; 3. Copper core; 31. First core; 32. Second core; 33. First pipe; 34. Second pipe; 35. Isolation ring; 36. Groove; 37. Air guide hole; 38. First guide groove; 39. Second guide groove; 4. Outer shell; 5. First tube; 6. Second tube. Detailed Implementation

[0016] The technical solution of this utility model will be more clearly and completely explained below with reference to the accompanying drawings and through the description of the preferred embodiments of this utility model.

[0017] like Figure 1 As shown, the pneumatic refrigeration device of the preferred embodiment of this utility model includes a condenser 1, which is a hollow tubular structure. The condenser 1 includes a shell 14 made of POM material, and the inner wall of the shell 14 is provided with a porous vacuum silicon heat insulation layer 15, which improves the heat insulation effect of the condenser 1. The bottom of the condenser 1 is provided with a cold air outlet 16. A coiled condenser tube 11 is provided inside the condenser 1, and the condenser tube 11 is connected to an external inlet pipe at the top of the condenser 1. The bottom of the condenser 1 is provided with a receiving cavity 12, and the bottom of the condenser tube 11 is connected to the receiving cavity 12. A return pipe 13 is connected to the receiving cavity 12, and the return pipe 13 extends upward to the top of the condenser 1 and is connected to an external outlet pipe. A vortex tube assembly 2 is connected to the side wall of the condenser 1, and the vortex tube assembly 2 introduces cold air into the condenser 1 in a direction perpendicular to the axis of the condenser 1.

[0018] like Figure 1 and Figure 2 As shown, the vortex tube assembly 2 includes a housing 14, within which a copper core 3 is provided. The copper core 3 has an isolation structure and a flow guiding structure. A first tube 5 and a second tube 6 are respectively located at both ends of the housing 14. The axes of the first tube 5 and the second tube 6 are collinear. The first tube 5 is connected to the side wall of the condenser 1, serving as the cold end to output cold air to the condenser 1. The first tube 5 is made of POM material to reduce cooling loss. The section of the second tube 6 furthest from the housing 14 is closed. This closed end of the second tube 6 serves as the hot end of the vortex tube assembly 2. The second tube 6 is made of metal to accelerate heat dissipation. Furthermore, the side wall of the housing 14 is connected to an external compressed gas generator.

[0019] like Figure 2 As shown, the copper core 3 includes a first core 31 and a second core 32, with one end of the first core 31 and the second core 32 connected together. A first conduit 33 is provided on the axis of the first core 31, and a second conduit 34 is provided on the axis of the second core 32, which in turn passes through the second core 32. The inner diameter of the first conduit 33 is smaller than the inner diameter of the second conduit 34. The isolation structure includes an isolation ring 35 disposed in a section of the first conduit 33 near the second conduit 34. The inner diameter of the isolation ring 35 is the same as that of the first conduit 33, and the outer diameter of the isolation ring 35 is smaller than the inner diameter of the second conduit 34. The isolation ring 35 extends in the second conduit 34 in a direction away from the first conduit 33, forming an isolation within the second conduit 34.

[0020] like Figure 2As shown, the outer periphery of the copper core 3 has a groove 36 around its circumference. The groove 36, together with the side wall of the housing 14, forms a compressed gas channel for the compressed gas to enter the vortex tube assembly 2. The first core 31 is provided with a gas guide hole 37 that communicates with the compressed gas channel at one end near the second core 32. The flow guiding structure includes a first flow guide groove 38 provided at one end of the first core 31 near the second core 32. The first flow guide groove 38 is arranged around the isolation ring 35. The outer diameter of the first flow guide groove 38 is larger than the inner diameter of the second pipe 34. A second flow guide groove 39 is provided at one end of the second core 32 near the first core 31. The second flow guide groove 39 is connected to the bottom of the second pipe 34 and communicates with the first flow guide groove 38. The end of the second flow guide groove 39 near the first flow guide groove 38 has the same outer diameter as the first flow guide groove 38, and the end of the second flow guide groove 39 away from the first flow guide groove 38 has the same inner diameter as the second pipe 34.

[0021] like Figure 2 As shown, ① represents the initial compressed air, ② represents the gas after the initial compressed air has been compressed through the vortex channel, and ③ represents the cold air that is blocked by the hot end and returns. The isolation ring 35 can reduce the influence of the initial compressed air on the returning cold air, and the guide structure is a chamfered shape, which allows the gas passing through the vortex channel to be compressed again and enter a smaller pipe, thereby improving the compression effect.

[0022] The above-described specific embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Various modifications, substitutions, and improvements made by those skilled in the art to the technical solutions of the present invention based on the provided description and drawings, without departing from the design concept and spirit of the present invention, should all fall within the scope of protection of the present invention. The scope of protection of the present invention is determined by the claims.

Claims

1. A pneumatic refrigeration device, characterized in that, The device includes a condenser, which is a hollow tubular structure. A vortex tube assembly is connected to the side wall of the condenser. The vortex tube assembly introduces cold air into the condenser in a direction perpendicular to the axis of the condenser. A copper core is provided inside the vortex tube assembly, and the copper core is provided with an isolation structure and a flow guiding structure.

2. The pneumatic refrigeration device according to claim 1, characterized in that, The vortex tube assembly includes a housing, with the copper core disposed inside the housing. A first tube and a second tube are respectively provided at both ends of the housing. The axes of the first tube and the second tube are collinear. The first tube is connected to the side wall of the condenser. The section of the second tube away from the housing is closed. The side wall of the housing is connected to an external compressed gas generating device.

3. The pneumatic refrigeration device according to claim 2, characterized in that, The copper core includes a first core and a second core, with one end of the first core and the second core connected together. A first conduit is provided on the axis of the first core, and a second conduit is provided on the axis of the second core, which in turn passes through the second core. The inner diameter of the first conduit is smaller than the inner diameter of the second conduit. The isolation structure includes an isolation ring disposed near a section of the first conduit close to the second conduit. The inner diameter of the isolation ring is the same as that of the first conduit, and the outer diameter of the isolation ring is smaller than the inner diameter of the second conduit. The isolation ring extends within the second conduit in a direction away from the first conduit.

4. The pneumatic refrigeration device according to claim 3, characterized in that, The outer periphery of the copper core has a groove around its circumference. The groove, together with the side wall of the housing, forms a compressed gas channel for the compressed gas to enter the vortex tube assembly. The first core has a gas guide hole communicating with the compressed gas channel at one end near the second core. The flow guiding structure includes a first flow guide groove disposed at one end of the first core near the second core. The first flow guide groove is disposed around the isolation ring. The outer diameter of the first flow guide groove is larger than the inner diameter of the second pipe. A second flow guide groove is disposed at one end of the second core near the first core. The second flow guide groove is connected to the bottom of the second pipe and communicates with the first flow guide groove. The end of the second flow guide groove near the first flow guide groove has the same outer diameter as the first flow guide groove, and the end of the second flow guide groove away from the first flow guide groove has the same inner diameter as the second pipe.

5. The pneumatic refrigeration device according to claim 1, characterized in that, The condenser is equipped with a coiled condenser tube, which is connected to an external inlet pipe at the top of the condenser. The bottom of the condenser is equipped with a receiving cavity, and the bottom of the condenser tube is connected to the receiving cavity. A return pipe is connected to the receiving cavity, which extends upward to the top of the condenser and is connected to an external outlet pipe.

6. The pneumatic refrigeration device according to claim 1, characterized in that, The condenser includes a shell, the inner wall of which is provided with a porous vacuum silicon heat insulation layer, and the bottom of the condenser is provided with a cold air exhaust port.

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