Subcooler
By employing a corrugated heat exchange tube and bolted connection design in the subcooler, the problems of limited turbulence and fouling accumulation are solved, resulting in more efficient cooling and easier equipment maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI CRYOGENIC GAS CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-04-17
AI Technical Summary
Existing subcoolers have limited turbulence during carbon dioxide fluid cooling and are prone to accumulating dirt, which affects the cooling effect.
The design employs a corrugated heat exchange tube and increases the contact area and turbulence between the carbon dioxide fluid and the heat exchange medium through the design of the inlet and outlet. At the same time, the bolted outer shell structure facilitates cleaning and maintenance, preventing the accumulation of dirt.
It significantly improves heat exchange efficiency, avoids dirt buildup, and enhances the compactness and service life of the equipment.
Smart Images
Figure CN224136140U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of carbon dioxide manufacturing technology, specifically to a supercooler. Background Technology
[0002] Carbon dioxide can be produced in various ways, including laboratory and industrial methods. Laboratory production involves connecting the apparatus, loading chemicals, collecting the gas, and testing the gas. Industrial methods include calcination, fermentation gas recovery, byproduct gas recovery, adsorption-expansion, and charcoal kiln methods. Applications of carbon dioxide include oil mining, machinery casting, metal smelting, ceramics and enamelware, biopharmaceuticals, beverage and beer production, fire protection, food preservation, and plant photosynthesis. The main function of a subcooler is to cool a gas or liquid to below its saturation temperature to achieve cooling and liquefaction. In carbon dioxide refrigeration systems, subcoolers can improve refrigeration efficiency. Specifically, subcoolers pre-cool the refrigerant liquid, reducing the gas produced during or after throttling, thereby improving the performance of the refrigeration system.
[0003] Traditional subcoolers introduce carbon dioxide fluid into the shell, where a heat exchange medium flows within the heat exchange tubes to cool the fluid. Because the carbon dioxide flows directly from the inlet to the outlet of the subcooler, this not only reduces cooling efficiency but also degrades product quality. To address these issues, some subcoolers incorporate baffles and flow dividers to guide the fluid into turbulence, increasing the contact area and residence time between the fluid and the heat exchange medium, thereby ensuring both cooling effectiveness and product quality. However, this method, while creating turbulence with baffles and flow dividers, has limited turbulence levels and is prone to fouling, further impacting cooling performance. Therefore, a new subcooler is proposed. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] In view of the shortcomings of the existing technology, this utility model provides a subcooler to solve the above-mentioned technical problems that not only limit the degree of turbulence, but also easily accumulate dirt, thus affecting the cooling effect.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a subcooler, comprising:
[0008] The outer shell, and the upper shell and lower shell that make up the outer shell, with a feed inlet and a discharge outlet respectively opened on the upper and lower surfaces of the upper shell and the lower shell, and positioning plates are installed at the front and rear ends of the lower surface of the upper shell, and positioning grooves are opened at the front and rear ends of the upper surface of the lower shell.
[0009] A left connecting plate is provided on the left side of the outer shell, and a right connecting plate is installed on the right side of the outer shell. The left and right connecting plates are connected to the outer shell by bolts.
[0010] The heat exchange tube is located inside the outer shell. The inner surfaces of the left and right connecting plates are respectively provided with a discharge port and a feed port. The discharge port and feed port are respectively connected to the feed port and discharge port of the heat exchange tube. The heat exchange tube has a wavy design. The upper surface of the left connecting plate and the lower surface of the right connecting plate are respectively provided with a feed end and a discharge end. The feed end and discharge end are respectively connected to the discharge port and the feed port. Carbon dioxide fluid is introduced into the inner cavity of the outer shell through the inlet, allowing it to contact the surface of the heat exchange tubes. Because the heat exchange tubes are corrugated, the boundary layer is more effectively disrupted, increasing the turbulence of the carbon dioxide fluid outside the tubes and significantly improving heat exchange efficiency. The heat exchange medium is then introduced into the left connecting plate along the inlet end. Within the left connecting plate, the heat exchange medium flows through the outlet and the inlet port of the heat exchange tubes, absorbing heat from the carbon dioxide fluid and cooling it. The cooled medium is then discharged through the outlet. After absorbing heat, the heat exchange medium flows through the outlet and inlet port of the heat exchange tubes into the right side... The heat exchange medium in the inner cavity of the connecting plate is discharged outward along the discharge end in the inner cavity of the right connecting plate. When cleaning the heat exchange tubes, first separate the bolts on the left and right connecting plates, and then separate the upper and lower shells of the outer shell to expose the heat exchange tubes to the outside. This allows for cleaning and maintenance of the heat exchange tube surface, the inner wall of the outer shell, and the left and right connecting plates. On the one hand, this not only improves the turbulence but also prevents the accumulation of dirt, which would affect the cooling effect. On the other hand, the multiple sets of wavy heat exchange tubes form a heat exchange tube bundle, which not only increases the heat exchange area and makes the equipment more compact but also reduces the space occupied.
[0011] Preferably, threaded holes are evenly distributed on both sides of the upper and lower shells, and these threaded holes are threadedly connected to bolts. Bolts are connected to the upper and lower shells via threaded holes on the left and right connecting plates.
[0012] Preferably, support legs and electric push rods are respectively added to the left and right sides of the front and back of the left and right connecting plates, and the top of the support legs and the telescopic end of the electric push rod are rotatably connected to the corresponding left and right connecting plates. When the electric push rod drives the right connecting plate and the right end of the outer shell to move upward, the left end of the outer shell drives the left connecting plate to rotate on the support legs, thereby concentrating the carbon dioxide fluid inside the outer shell at the discharge port and discharging the carbon dioxide fluid outward through the discharge port. This avoids the corrosion caused by some carbon dioxide fluid remaining inside the outer shell and ensures the service life and normal operation of the equipment.
[0013] Preferably, the inner cavity of the left connecting plate has a first chamber, which is connected to both the inlet end and the outlet hole, and an inlet conduit is installed in the inner cavity of the inlet end. The heat exchange medium is introduced into the first chamber of the left connecting plate through the inlet conduit, and the heat exchange medium in the first chamber flows into the corresponding heat exchange tube through the outlet hole.
[0014] Preferably, the inner cavity of the right connecting plate is provided with a second chamber, which is connected to both the discharge end and the inlet hole, and a discharge conduit is installed in the inner cavity of the discharge end. The heat exchange medium absorbing heat in the heat exchange tube enters the second chamber through the inlet hole, and the heat exchange medium in the second chamber can be discharged outward through the discharge conduit, allowing the heat exchange medium that has absorbed heat to be utilized.
[0015] Preferably, the positioning plate corresponds to the shape and position of the positioning groove, and the positioning plate is inserted into the positioning groove. When the upper and lower shells are fitted together, the positioning plate is inserted into the interior of the positioning groove, thereby preventing carbon dioxide fluid from leaking from the gap between the upper and lower shells.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, the present invention provides a subcooler with the following advantages:
[0018] This subcooler introduces carbon dioxide fluid into the inner cavity of the outer shell through the inlet, allowing the fluid to contact the surface of the heat exchange tubes. Because the heat exchange tubes are corrugated, the boundary layer is more effectively disrupted, increasing the turbulence of the carbon dioxide fluid outside the tubes and significantly improving heat exchange efficiency. The heat exchange medium is introduced into the left connecting plate along the inlet, flowing through the outlet and inlet of the heat exchange tubes to absorb heat from the carbon dioxide fluid, cooling it. The cooled medium is then discharged through the outlet. The heat exchange medium, having absorbed heat, flows through the outlet of the heat exchange tubes and... The feed inlet enters the inner cavity of the right connecting plate. The heat exchange medium in the inner cavity of the right connecting plate is discharged outward along the discharge end. When cleaning the heat exchange tubes, first separate the bolts on the left and right connecting plates, and then separate the upper and lower shells of the outer casing to expose the heat exchange tubes to the outside. This allows for cleaning and maintenance of the heat exchange tube surface, the inner wall of the outer casing, and the left and right connecting plates. This not only improves the turbulence but also prevents the accumulation of dirt, which would affect the cooling effect. The wavy heat exchange tubes are in multiple groups and form a heat exchange tube bundle, which not only increases the heat exchange area and makes the equipment more compact but also reduces the space occupied. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2This is a schematic diagram of the outer shell separation structure of this utility model;
[0021] Figure 3 This is a schematic diagram of the left connecting plate and its connection structure of the present invention;
[0022] Figure 4 This is a schematic cross-sectional view of the left connecting plate of this utility model;
[0023] Figure 5 This is a cross-sectional view of the connecting plate on the right side of this utility model.
[0024] In the diagram: 1. Outer shell; 2. Upper shell; 3. Lower shell; 4. Positioning plate; 5. Positioning groove; 6. Threaded hole; 7. Feed inlet; 8. Discharge outlet; 9. Left connecting plate; 10. Right connecting plate; 11. Bolt; 12. Support leg; 13. Electric push rod; 14. Heat exchange tube; 15. Feed conduit; 16. Discharge conduit; 17. First chamber; 18. Discharge hole; 19. Second chamber; 20. Feed inlet. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] This utility model provides a technical solution, a subcooler, comprising: (see details) Figure 1 , Figure 2 , Figure 3 The outer shell 1, and the upper shell 2 and lower shell 3 that make up the outer shell 1, with a feed inlet 7 and a discharge outlet 8 respectively opened on the upper and lower surfaces of the upper shell 2 and the lower shell 3, and positioning plates 4 are installed on the front and rear ends of the lower surface of the upper shell 2, and positioning grooves 5 are opened on the front and rear ends of the upper surface of the lower shell 3.
[0027] A left connecting plate 9 is located on the left side of the outer shell 1, and a right connecting plate 10 is installed on the right side of the outer shell 1. Bolts 11 connect the left connecting plate 9 and the right connecting plate 10 to the outer shell 1.
[0028] The heat exchange tube 14 is located inside the outer shell 1. The inner surfaces of the left connecting plate 9 and the right connecting plate 10 are respectively provided with a discharge hole 18 and a feed hole 20. The discharge hole 18 and the feed hole 20 are respectively connected to the feed port and the discharge port of the heat exchange tube 14. The heat exchange tube 14 has a wave-shaped design. The upper surface of the left connecting plate 9 and the lower surface of the right connecting plate 10 are respectively provided with a feed end and a discharge end. The feed end and the discharge end are respectively connected to the discharge hole 18 and the feed hole 20. Carbon dioxide fluid is introduced into the inner cavity of the outer shell 1 through the feed port 7, allowing the carbon dioxide fluid to contact the surface of the heat exchange tube 14. Since the heat exchange tube 14 is corrugated, it can more effectively disrupt the boundary layer, increasing the turbulence of the carbon dioxide fluid outside the tube and significantly improving heat exchange efficiency. The heat exchange medium is then introduced into the left connecting plate 9 along the feed end, flowing through the discharge port 18 and the feed port of the heat exchange tube 14 to absorb heat from the carbon dioxide fluid, cooling the fluid. The cooled medium is then discharged through the discharge port 8. After absorbing heat, the heat exchange medium flows through the discharge port and feed port 20 of the heat exchange tube 14 into the right connecting plate. The heat exchange medium in the inner cavity of the right connecting plate 10 is discharged outward along the discharge end. When cleaning the heat exchange tube 14, first separate the bolts 11 on the left connecting plate 9 and the right connecting plate 10, and then separate the upper half shell 2 and the lower half shell 3 of the outer shell 1, so that the heat exchange tube 14 is exposed to the outside. The surface of the heat exchange tube 14, the inner wall of the outer shell 1, the left connecting plate 9 and the right connecting plate 10 can be cleaned and maintained. On the one hand, it can not only improve the turbulence, but also avoid the accumulation of dirt and affect the cooling effect. On the other hand, the number of wavy heat exchange tubes 14 is multiple and forms a heat exchange tube bundle, which not only increases the heat exchange area and makes the equipment more compact, but also reduces the space occupied.
[0029] Please see Figure 2 , Figure 3Threaded holes 6 are evenly provided on the left and right sides of the upper shell 2 and the lower shell 3, and the threaded holes 6 are threadedly connected to bolts 11. Bolts 11 are connected to the upper shell 2 and the lower shell 3 on the left connecting plate 9 and the right connecting plate 10 through the threaded holes 6. Support legs 12 and electric push rods 13 are respectively added to the left and right sides of the front and back of the left connecting plate 9 and the right connecting plate 10, and the top of the support leg 12 and the telescopic end of the electric push rod 13 are rotatably connected to the corresponding left connecting plate 9 and right connecting plate 10. When the electric push rod 13 drives the right connecting plate 10 and the right end of the outer shell 1 to move upward, the left end of the outer shell 1 drives the left connecting plate 9 to rotate on the support leg 12, thereby concentrating the carbon dioxide fluid in the outer shell 1 at the discharge port 8 and discharging the carbon dioxide fluid outward through the discharge port 8, thereby avoiding the corrosion caused by some carbon dioxide fluid remaining inside the outer shell 1, and ensuring the service life and normal use of the equipment. The positioning plate 4 and the positioning groove 5 correspond in shape and position, and the positioning plate 4 and the positioning groove 5 are inserted and connected. When the upper shell 2 and the lower shell 3 are fitted together, the positioning plate 4 is inserted into the positioning groove 5, thereby preventing carbon dioxide fluid from leaking from the gap between the upper shell 2 and the lower shell 3.
[0030] Please see Figure 4 , Figure 5 The left connecting plate 9 has a first chamber 17 inside, which is connected to both the inlet and outlet ports 18. A feed conduit 15 is installed in the inlet port. The heat exchange medium is introduced into the first chamber 17 of the left connecting plate 9 through the feed conduit 15. The heat exchange medium in the first chamber 17 flows into the corresponding heat exchange tube 14 through the outlet port 18. The right connecting plate 10 has a second chamber 19 inside, which is connected to both the outlet and inlet ports 20. A discharge conduit 16 is installed in the outlet port. The heat exchange medium that absorbs heat in the heat exchange tube 14 enters the second chamber 19 through the inlet port 20. The heat exchange medium in the second chamber 19 can be discharged outward through the discharge conduit 16, and the heat-absorbing heat exchange medium can be utilized.
[0031] This scheme: Carbon dioxide fluid is introduced into the inner cavity of the outer shell 1 through the feed port 7, allowing the carbon dioxide fluid to contact the surface of the heat exchange tube 14. Since the heat exchange tube 14 is corrugated, it can more effectively disrupt the boundary layer, increase the turbulence of the carbon dioxide fluid outside the tube, and significantly improve the heat exchange efficiency. The heat exchange medium is introduced into the left connecting plate 9 along the feed end, allowing the heat exchange medium to flow into the heat exchange tube 14 through the discharge port 18 and the feed port of the heat exchange tube 14, absorbing heat from the carbon dioxide fluid and cooling it. The heat exchange medium is then discharged out through the discharge port 8. After absorbing heat, the heat exchange medium enters the inner cavity of the right connecting plate 10 through the discharge port and the feed port 20 of the heat exchange tube 14. The heat exchange medium in the inner cavity of the right connecting plate 10 is discharged outward along the discharge end. When cleaning the heat exchange tube 14, first separate the bolts 11 on the left connecting plate 9 and the right connecting plate 10, and then separate the upper half shell 2 and the lower half shell 3 of the outer shell 1, so that the heat exchange tube 14 is exposed to the outside world. The surface of the heat exchange tube 14, the inner wall of the outer shell 1, the left connecting plate 9 and the right connecting plate 10 can be cleaned and maintained. When the electric push rod 13 drives the right connecting plate 10 and the right end of the outer shell 1 to move upward, the left end of the outer shell 1 drives the left connecting plate 9 to rotate on the support leg 12, so that the carbon dioxide fluid in the outer shell 1 is concentrated at the discharge port 8 and discharged outward through the discharge port 8.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A subcooler characterized by, include: The outer shell (1), and the upper shell (2) and lower shell (3) that make up the outer shell (1), and the upper and lower surfaces of the upper shell (2) and the lower shell (3) are respectively provided with a feed inlet (7) and a discharge outlet (8), and the lower surface of the upper shell (2) is provided with a positioning plate (4) at both ends, and the upper surface of the lower shell (3) is provided with a positioning groove (5) at both ends. A left connecting plate (9) is provided on the left side of the outer shell (1), and a right connecting plate (10) is installed on the right side of the outer shell (1). The left connecting plate (9) and the right connecting plate (10) are connected to the outer shell (1) by bolts (11). The heat exchange tube (14) is located in the inner cavity of the outer shell (1), and the inner sides of the left connecting plate (9) and the right connecting plate (10) are respectively provided with a discharge hole (18) and a feed hole (20). The discharge hole (18) and the feed hole (20) are respectively connected to the feed port and the discharge port of the heat exchange tube (14). The heat exchange tube (14) is designed in a wave shape, and the upper surface of the left connecting plate (9) and the lower surface of the right connecting plate (10) are respectively provided with a feed end and a discharge end. The feed end and the discharge end are respectively connected to the discharge hole (18) and the feed hole (20).
2. A subcooler according to claim 1, characterised in that: The upper shell (2) and the lower shell (3) are provided with threaded holes (6) evenly on the left and right sides, and the threaded holes (6) are threadedly connected to the bolts (11).
3. A subcooler according to claim 1, characterized in that: Support legs (12) and electric push rods (13) are respectively provided on the left and right sides of the front and back sides of the left connecting plate (9) and the right connecting plate (10), and the top of the support leg (12) and the telescopic end of the electric push rod (13) are rotatably connected to the corresponding left connecting plate (9) and right connecting plate (10).
4. A subcooler according to claim 1, characterized in that: The inner cavity of the left connecting plate (9) is provided with a first chamber (17), and the first chamber (17) is connected to the feed end and the discharge hole (18) respectively, and a feed conduit (15) is installed in the inner cavity of the feed end.
5. A subcooler according to claim 1, characterized in that: The inner cavity of the right connecting plate (10) is provided with a second chamber (19), and the second chamber (19) is connected to the discharge end and the feed hole (20) respectively, and a discharge guide pipe (16) is installed in the inner cavity of the discharge end.
6. A subcooler according to claim 1, characterized in that: The positioning plate (4) and the positioning groove (5) are corresponding in shape and position, and the positioning plate (4) and the positioning groove (5) are inserted and connected.