Anti-freezing type oval tube surface condenser
Patent Information
- Application Number
- CN202521836532.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-28
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-08-28
AI Technical Summary
[0003]然而，现有的多回路表冷器在实际应用中，弯头处的位置形成了局部死角，这就导致回路内的冷却介质无法彻底排出，残留的冷却介质在低温环境下极易结冰膨胀，一方面会对弯头和换热基管造成物理挤压，导致管道容易出现破裂或密封失效，直接影响表冷器的使用；另一方面，残留介质长期滞留还会引发管道内壁腐蚀，缩短表冷器的使用寿命，增加设备维护成本和停机风险
[0014] 1. In this utility model, the heat exchange base tubes included in the heat exchange circuit are arranged in ascending order from the water inlet end to the water outlet end. The line connecting the input end and the output end of the U-shaped bend is inclined to the horizontal plane. When the surface cooler is stopped, the water at the outlet end, which is located at the high end of the heat exchange circuit, will flow from the high end of the U-shaped bend to the low end under the action of gravity and inertia and accumulate potential energy. With the help of potential energy, the cooling medium can enter the next stage U-shaped bend or the water inlet pipe at the low point, thereby ensuring that all the residual cooling medium inside the surface cooler is emptied and preventing the surface cooler from freezing and cracking.
Smart Images
Figure CN224772111U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cooler technology, specifically relating to an antifreeze elliptical tube surface cooler. Background Technology
[0002] As the core component for heat exchange between air and cooling medium, the surface cooler's heat exchange efficiency, operational stability, and antifreeze performance directly determine the energy efficiency and service life of the entire refrigeration or air conditioning system. Currently, most mainstream surface coolers on the market adopt a multi-loop heat exchange structure, forming a continuous cooling medium flow channel by connecting multiple heat exchange base tubes with elbows.
[0003] However, in practical applications, existing multi-loop surface coolers often have local dead zones at the elbows, which prevent the cooling medium from being completely discharged from the loop. The residual cooling medium is prone to freezing and expansion in low-temperature environments. On the one hand, this causes physical compression of the elbows and heat exchange base tubes, making the pipes prone to cracking or sealing failure, directly affecting the use of the surface cooler. On the other hand, long-term retention of residual medium can also cause corrosion of the inner wall of the pipes, shortening the service life of the surface cooler and increasing equipment maintenance costs and downtime risks. Utility Model Content
[0004] To address the problems existing in the prior art, this utility model provides an antifreeze elliptical tube surface cooler. The heat exchange base tubes included in the heat exchange circuit are arranged sequentially from low to high from the water inlet end to the water outlet end. When the cooling medium passes through the U-shaped bend, it flows under the action of gravity and inertia and accumulates potential energy. The cooling medium continues to flow into the next stage U-shaped bend or water inlet pipe at the lower point with the help of potential energy, thereby ensuring that all the residual cooling medium inside the surface cooler is emptied and preventing the surface cooler from freezing and cracking.
[0005] The specific technical solution adopted in this utility model is as follows:
[0006] An antifreeze elliptical tube surface cooler includes a frame and heat exchange base tubes, an inlet water collection pipe, and an outlet water collection pipe installed on the frame. The heat exchange base tubes are arranged in multiple rows at intervals along the horizontal direction between the inlet water collection pipe and the outlet water collection pipe. Each row of heat exchange base tubes is arranged in multiple groups along the vertical direction. The heat exchange base tubes in adjacent rows are staggered vertically. Adjacent heat exchange base tubes are connected sequentially from low to high along the direction of cooling medium flow by means of U-shaped elbows to form a heat exchange loop. The heat exchange loops are arranged in multiple groups along the vertical direction. The first-stage heat exchange base tube of the heat exchange loop is connected to the inlet water collection pipe, and the last-stage heat exchange base tube of the heat exchange loop is connected to the outlet water collection pipe.
[0007] The heat exchange circuit includes 2n heat exchange base tubes, where n is a positive integer.
[0008] The frame is also provided with heat exchange fins. The vertical plane of the heat exchange fins is perpendicular to the length direction of the heat exchange base tube. Multiple sets of heat exchange fins are arranged at intervals along the water inlet direction. The heat exchange base tube passes through multiple sets of heat exchange fins in sequence.
[0009] The bottom of the inlet water collection pipe and the bottom of the outlet water collection pipe are respectively provided with an inlet drain port and an outlet drain port, and both the inlet drain port and the outlet drain port have the freedom to open and close.
[0010] The top of the water outlet collection pipe is provided with an air vent, which has the freedom to open and close.
[0011] The heat exchange base tube has an elliptical cross-section along the vertical direction.
[0012] The aperture of the heat exchange base tube gradually decreases along the flow direction of the cooling medium.
[0013] The beneficial effects of this utility model are:
[0014] 1. In this utility model, the heat exchange base tubes included in the heat exchange circuit are arranged in ascending order from the water inlet end to the water outlet end. The line connecting the input end and the output end of the U-shaped bend is inclined to the horizontal plane. When the surface cooler is stopped, the water at the outlet end, which is located at the high end of the heat exchange circuit, will flow from the high end of the U-shaped bend to the low end under the action of gravity and inertia and accumulate potential energy. With the help of potential energy, the cooling medium can enter the next stage U-shaped bend or the water inlet pipe at the low point, thereby ensuring that all the residual cooling medium inside the surface cooler is emptied and preventing the surface cooler from freezing and cracking.
[0015] 2. Some existing surface coolers have the heat exchange circuit placed at an angle, but this method is only suitable for single-circuit surface coolers. When there are multiple circuits, the residual cooling medium will accumulate at the bottom bend of the heat exchange circuit and cannot be completely drained.
[0016] Therefore, by limiting the aperture of the heat exchange base tube, the input and output ends of the heat exchange base tube are made to have a height difference. During the drainage stage, when the cooling medium passes through each stage of the heat exchange base tube, it flows from the end of the higher point to the end of the lower point, which can ensure that the cooling medium in the heat exchange circuit is completely drained and avoids residue in the heat exchange circuit. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a side view of the present invention.
[0019] Figure 3 This is a front structural diagram of the present invention;
[0020] Figure 4 This is a side view of the heat exchange circuit;
[0021] Figure 5 This is a schematic diagram of the heat exchange circuit connection in specific embodiment 1;
[0022] Figure 6 This is a schematic diagram of the heat exchange circuit connection in specific embodiment 2;
[0023] Figure 7 This is a schematic diagram of the heat exchange circuit connection in specific embodiment 3;
[0024] Figure 8 This is a schematic diagram of the heat exchange circuit connection in specific embodiment 4;
[0025] Figure 9 This is a schematic diagram of the heat exchange circuit connection in specific embodiment 5;
[0026] Figure 10 This is a schematic diagram of the heat exchange circuit connection in specific embodiment 6;
[0027] Figure 11 This is a schematic diagram of the heat exchange circuit connection in specific embodiment 7;
[0028] Figure 12 This is a schematic diagram of the heat exchange circuit connection in specific embodiment 8;
[0029] In the attached diagram, 1 is the frame, 2 is the heat exchange base tube, 3 is the inlet water collection pipe, 4 is the outlet water collection pipe, 5 is the U-shaped elbow, 6 is the heat exchange fins, 7 is the inlet vent, 8 is the outlet vent, and 9 is the vent. Detailed Implementation
[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0031] Specific embodiment 1, such as Figure 1-5 As shown, this utility model provides a freeze-proof elliptical tube surface cooler, including a frame 1 and heat exchange base tubes 2, inlet water collection pipes 3 and outlet water collection pipes 4 installed on the frame 1. The heat exchange base tubes 2 are arranged in multiple rows at intervals along the horizontal direction between the inlet water collection pipes 3 and the outlet water collection pipes 4. Each row of heat exchange base tubes 2 is arranged in multiple groups along the vertical direction. The heat exchange base tubes 2 in adjacent rows are staggered vertically. Adjacent heat exchange base tubes 2 are connected sequentially from low to high along the direction of cooling medium flow by means of U-shaped elbows 5 to form a heat exchange circuit. The heat exchange circuit is arranged in multiple groups along the vertical direction. The first stage heat exchange base tube 2 of the heat exchange circuit is connected to the inlet water collection pipe 3, and the last stage heat exchange base tube 2 of the heat exchange circuit is connected to the outlet water collection pipe 4.
[0032] In practical applications, the elbows of existing multi-loop surface coolers create local dead zones, preventing the cooling medium from being completely discharged from the loop. The residual cooling medium is prone to freezing and expansion in low-temperature environments. This can cause physical compression of the elbows and heat exchange base tubes, leading to pipe rupture or seal failure, directly affecting the use of the surface cooler. Furthermore, the long-term retention of residual medium can also cause corrosion of the pipe walls, shortening the lifespan of the surface cooler and increasing equipment maintenance costs and downtime risks.
[0033] Therefore, in this utility model, the heat exchange base tubes 2 included in the heat exchange circuit are arranged from low to high from the water inlet end to the water outlet end. The line connecting the input end and the output end of the U-shaped bend 5 is inclined to the horizontal plane. When the surface cooler is stopped, the water at the outlet end located at the high point of the heat exchange circuit will flow from the high end of the U-shaped bend 5 to the low end under the action of gravity and inertia and accumulate potential energy. With the help of potential energy, the cooling medium can enter the next stage U-shaped bend 5 or the water inlet pipe 3 at the low point, thereby ensuring that all the residual cooling medium inside the surface cooler is emptied and preventing the surface cooler from freezing and cracking.
[0034] The heat exchange circuit includes 2n heat exchange base tubes 2, where n is a positive integer.
[0035] In specific embodiment 1, the heat exchange base tube 2 of the surface cooler has 2 horizontal rows and 1 loop.
[0036] The number of horizontal tube rows refers to the number of heat exchange base tubes 2 in the horizontal direction of the surface cooler. The loop is as follows: the cooling medium flows in from the left end of the upper heat exchange base tube 2, passes through the U-shaped bend 5 on one side of the right end of the upper heat exchange base tube 2, and then flows along the right end of the lower heat exchange base tube 2 to the left end of the lower heat exchange base tube 2 to complete one loop.
[0037] like Figure 5 As shown, the heat exchange circuit in specific embodiment 1 includes two heat exchange base tubes 2 and one U-shaped bend 5. The cooling medium enters the first heat exchange base tube 2 from the inlet water collection pipe 3, flows through the U-shaped bend 5 into the second heat exchange base tube 2, and flows out through the outlet water collection pipe 4.
[0038] like Figure 3 As shown, the frame 1 is also provided with heat exchange fins 6. The vertical plane of the heat exchange fins 6 is perpendicular to the length direction of the heat exchange base tube 2. Multiple sets of heat exchange fins 6 are arranged at intervals along the water inlet direction. The heat exchange base tube 2 passes through multiple sets of heat exchange fins 6 in sequence.
[0039] When the air to be cooled flows through the heat exchange fins 6, it increases the contact area and turbulence between the air and the surface cooler, allowing the heat carried by the air to be exchanged more fully with the cooling medium, thus improving the heat exchange efficiency.
[0040] like Figure 1-2As shown, the bottom of the inlet water collection pipe 3 and the bottom of the outlet water collection pipe 4 are respectively provided with an inlet drain port 7 and an outlet drain port 8, and both the inlet drain port 7 and the outlet drain port 8 have the freedom to open and close.
[0041] After the surface cooler stops operating, the inlet drain port 7 and outlet drain port 8 are automatically opened to drain the residual cooling medium in the inlet water collection pipe 3 and outlet water collection pipe 4, effectively preventing water accumulation and freezing from damaging the water collection pipe and heat exchange base pipe 2. Plugs are installed at the inlet drain port 7 and outlet drain port 8 respectively. When the surface cooler is operating, the plugs are installed at the inlet drain port 7 and outlet drain port 8. When drainage is required, the plugs are removed.
[0042] like Figure 1-2 As shown, the top of the water outlet collection pipe 4 is provided with an air vent 9, which has the freedom to open and close.
[0043] As the cooling medium absorbs heat from the air to be cooled in the heat exchange base tube 2, its temperature will rise. At this time, the gas dissolved in the cooling medium will precipitate due to the decrease in solubility. These gases will gradually accumulate in the heat exchange base tube 2 and form a gas layer. Eventually, they will accumulate in the heat exchange circuit and form a dead zone in the flow rate. Therefore, it is necessary to discharge the gas accumulated in the heat exchange circuit through the vent 9.
[0044] like Figure 5 As shown, the heat exchange base tube 2 has an elliptical cross-section along the vertical direction.
[0045] Traditional surface coolers often use circular tubes as the heat exchange base tube. When air passes through the circular tube, a low-pressure area is formed on the leeward side of the tube behind the separation point. In order to fill the pressure of the low-pressure area, the external mainstream fluid will flow into this area in the opposite direction, impacting and entraining the forward-flowing fluid, eventually forming backflow and vortex phenomena. The higher the air velocity, the more obvious the backflow and vortex phenomena, which in turn cause greater resistance.
[0046] Therefore, the heat exchange base tube 2 in this utility model adopts an elliptical tube. The curvature of the leeward side of the elliptical tube changes little. Under the condition that the cross-sectional area inside the elliptical tube is the same as that inside the circular tube, the area of the low-pressure zone of the elliptical tube is only 1 / 3 to 1 / 2 of that of the circular tube. This can reduce the backflow and vortex phenomena generated when the air sweeps over the tube bundle, thereby reducing the air-side flow resistance and improving the air-side heat exchange capacity of the surface cooler.
[0047] like Figure 4 As shown, the aperture of the heat exchange base tube 2 gradually decreases along the flow direction of the cooling medium.
[0048] Although the cooling medium in this invention will flow to the lower point and accumulate potential energy under the action of gravity and inertia when passing through the U-bend, and thus pass through the heat exchange base tube 2 of the horizontal section, when the heat exchange base tube 2 is long, the potential energy accumulated by the cooling medium may not be enough to allow the cooling medium to pass through the heat exchange base tube 2 and enter the next stage U-bend 5, resulting in the possibility that cooling medium may still remain in the heat exchange base tube 2.
[0049] To address the aforementioned issues, some existing surface coolers have an overall tilted heat exchange circuit. However, this method is only applicable to single-circuit surface coolers. When there are multiple circuits, residual cooling medium accumulates at the bottom bend of the heat exchange circuit and cannot be completely drained.
[0050] Therefore, by limiting the aperture of the heat exchange base tube 2, the input and output ends of the heat exchange base tube 2 are made to have a height difference. During the drainage stage, when the cooling medium passes through each stage of the heat exchange base tube 2, it flows from the end of the higher point to the end of the lower point, which can ensure that the cooling medium in the heat exchange circuit is completely drained and avoids residue in the heat exchange circuit.
[0051] The difference between specific embodiments 2-9 and specific embodiment 1 is that the connection method of the heat exchange base tube 2 in the heat exchange circuit is different in each specific embodiment. In specific embodiments 2-9, all the first heat exchange base tubes 2 are connected to the inlet water collection pipe 3, and the last stage heat exchange base tube 2 is connected to the outlet water collection pipe 4. Specific Implementation Example 2
[0053] like Figure 6 As shown, in specific embodiment 2, the heat exchange base tube 2 of the surface cooler has 2 horizontal rows and 2 loops.
[0054] In specific embodiment 2, each heat exchange loop includes four heat exchange base tubes 2 arranged in a parallelogram and three U-shaped bends 5. The first heat exchange base tube 2 and the third heat exchange base tube 2 are located in the first row, the second heat exchange base tube 2 and the fourth heat exchange base tube 2 are located in the second row, and the first heat exchange base tube 2 is located at the bottom of the heat exchange loop.
[0055] The cooling medium enters the first heat exchange base tube 2 from the inlet water collection pipe 3, flows into the second, third and fourth heat exchange base tubes 2 in sequence through the U-shaped bend 5, and finally flows out through the outlet water collection pipe 4. Specific Implementation Example 3
[0057] like Figure 7 As shown, in specific embodiment 3, the heat exchange base tube 2 of the surface cooler has 3 horizontal rows and 2 loops.
[0058] In specific embodiment 3, the topmost primary heat exchange circuit includes four heat exchange base tubes 2 arranged in a parallelogram, wherein the first and third heat exchange base tubes 2 are located in the first row, and the second and fourth heat exchange base tubes 2 are located in the second row.
[0059] The bottommost heat exchange loop includes four heat exchange base tubes 2, with the first heat exchange base tube 2 located in the first row, the third heat exchange base tube 2 located in the second row, and the second and fourth heat exchange base tubes 2 located in the third row.
[0060] Multiple heat exchange units are set between the primary heat exchange loop and the final heat exchange loop, and each heat exchange unit includes 3 heat exchange loops.
[0061] The first heat exchange base tube 2 of the uppermost heat exchange circuit is located in the first row, the second heat exchange base tube 2 is located in the second row, and the third and fourth heat exchange base tubes 2 are located in the third row.
[0062] The first and second heat exchange base tubes 2 of the middle heat exchange loop are located in the first row, the third heat exchange base tube 2 is located in the second row, and the fourth heat exchange base tube 2 is located in the third row;
[0063] The first heat exchange base tube 2 of the bottom heat exchange circuit is located in the first row, the second and third heat exchange base tubes 2 are located in the second row, and the fourth heat exchange base tube 2 is located in the third row. Specific Implementation Example 4
[0065] like Figure 8 As shown, in specific embodiment 4, the heat exchange base tube 2 of the surface cooler has 4 horizontal rows and 2 loops.
[0066] In specific embodiment 4, the topmost primary heat exchange loop includes 6 heat exchange base tubes 2, wherein the first heat exchange base tube 2 is located at the bottom, the sixth heat exchange base tube 2 is located at the top, the first and third heat exchange base tubes 2 are located in the first row, the second and fifth heat exchange base tubes 2 are located in the second row, the fourth heat exchange base tube 2 is located in the third row, and the sixth heat exchange base tube 2 is located in the fourth row. The third, fourth, fifth, and sixth heat exchange base tubes 2 are arranged in a parallelogram.
[0067] The intermediate heat exchange circuit includes four heat exchange base tubes 2 arranged in an inclined straight line, with the first heat exchange base tube 2 located at the bottom and the fourth heat exchange base tube 2 located at the top. The first heat exchange base tube 2 to the fourth heat exchange base tube 2 are arranged in the first to fourth rows respectively.
[0068] The bottommost heat exchange loop is mirrored in the first heat exchange loop. The first heat exchange base tube 2 is located in the first row, the third heat exchange base tube 2 is located in the second row, the second and fifth heat exchange base tubes 2 are located in the third row, and the fourth and sixth heat exchange base tubes 2 are located in the fourth row. The first, second, third, and fourth heat exchange base tubes 2 are arranged in a parallelogram. Specific Implementation Example 5
[0070] like Figure 9 As shown, in specific embodiment 5, the heat exchange base tube 2 of the surface cooler has 4 horizontal rows and 3 loops.
[0071] The topmost primary heat exchange loop consists of six heat exchange base tubes 2 arranged in a wavy cross-section, with the first, third, and fifth heat exchange base tubes 2 located in the first row, and the second, fourth, and sixth heat exchange base tubes 2 located in the second row.
[0072] The bottommost heat exchange loop is mirrored in the first heat exchange loop, with the first, third, and fifth heat exchange base tubes 2 located in the third row, and the second, fourth, and sixth heat exchange base tubes 2 located in the fourth row.
[0073] Multiple heat exchange units are set between the primary heat exchange loop and the final heat exchange loop, and each heat exchange unit includes 4 heat exchange loops.
[0074] The first heat exchange base tube 2 of the uppermost heat exchange circuit is located in the first row, the second heat exchange base tube 2 is located in the second row, the third, fourth and fifth heat exchange base tubes 2 are located in the third row, and the sixth heat exchange base tube 2 is located in the fourth row.
[0075] The first heat exchange base tube 2 of the heat exchange circuit above is located in the first row, the second heat exchange base tube 2 is located in the second row, the third heat exchange base tube 2 is located in the third row, and the fourth, fifth, and sixth heat exchange base tubes 2 are located in the fourth row.
[0076] The first, second, and third heat exchange base tubes 2 of the heat exchange circuit below are located in the first row, the fourth heat exchange base tube 2 is located in the second row, the fifth heat exchange base tube 2 is located in the third row, and the sixth heat exchange base tube 2 is located in the fourth row.
[0077] The first heat exchange base tube 2 of the bottom heat exchange circuit is located in the first row, the second, third and fourth heat exchange base tubes 2 are located in the second row, the fifth heat exchange base tube 2 is located in the third row, and the sixth heat exchange base tube 2 is located in the fourth row. Specific Implementation Example 6
[0079] like Figure 10 As shown, in specific embodiment 6, the heat exchange base tube 2 of the surface cooler has 5 horizontal rows and 3 loops.
[0080] The topmost primary heat exchange loop includes six heat exchange base tubes 2, with the first and third heat exchange base tubes 2 located in the first row, the second and fifth heat exchange base tubes 2 located in the second row, the fourth heat exchange base tube 2 located in the third row, and the sixth heat exchange base tube 2 located in the fourth row. The third, fourth, fifth, and sixth heat exchange base tubes 2 are arranged in a parallelogram.
[0081] The bottommost heat exchange loop includes six heat exchange base tubes 2, with the first heat exchange base tube 2 located in the third row, the second, fourth, and sixth heat exchange base tubes 2 located in the fifth row, and the third and fifth heat exchange base tubes 2 located in the fourth row.
[0082] Multiple heat exchange units are set between the primary heat exchange loop and the final heat exchange loop, and each heat exchange unit includes 5 heat exchange loops.
[0083] The first and second heat exchange base tubes 2 of the uppermost heat exchange circuit are located in the first row, the third heat exchange base tube 2 is located in the second row, the fourth heat exchange base tube 2 is located in the third row, the fifth heat exchange base tube 2 is located in the fourth row, and the sixth heat exchange base tube 2 is located in the fifth row.
[0084] The first heat exchange base tube 2 of the heat exchange loop above is located in the first row, the second and third heat exchange base tubes 2 are located in the second row, the fourth heat exchange base tube 2 is located in the third row, the fifth heat exchange base tube 2 is located in the fourth row, and the sixth heat exchange base tube 2 is located in the fifth row.
[0085] The first heat exchange base tube 2 of the middle heat exchange loop is located in the first row, the second heat exchange base tube 2 is located in the second row, the third and fourth heat exchange base tubes 2 are located in the third row, the fifth heat exchange base tube 2 is located in the fourth row, and the sixth heat exchange base tube 2 is located in the fifth row.
[0086] The first heat exchange base tube 2 of the heat exchange circuit below is located in the first row, the second heat exchange base tube 2 is located in the second row, the third heat exchange base tube 2 is located in the third row, the fourth and fifth heat exchange base tubes 2 are located in the fourth row, and the sixth heat exchange base tube 2 is located in the fifth row.
[0087] The first heat exchange base tube 2 of the bottom heat exchange circuit is located in the first row, the second heat exchange base tube 2 is located in the second row, the third heat exchange base tube 2 is located in the third row, the fourth heat exchange base tube 2 is located in the fourth row, and the fifth and sixth heat exchange base tubes 2 are located in the fifth row. Specific Implementation Example 7
[0089] like Figure 11 As shown, in specific embodiment 7, the heat exchange base tube 2 of the surface cooler has 6 horizontal rows and 3 loops.
[0090] The topmost primary heat exchange loop includes six heat exchange base tubes 2, with the first and third heat exchange base tubes 2 located in the first row, the second and fifth heat exchange base tubes 2 located in the second row, the fourth heat exchange base tube 2 located in the third row, and the sixth heat exchange base tube 2 located in the fourth row. The third, fourth, fifth, and sixth heat exchange base tubes 2 are arranged in a parallelogram.
[0091] The intermediate heat exchange circuit includes six heat exchange base tubes 2 arranged in an inclined straight line, with the first heat exchange base tube 2 located at the bottom and the fourth heat exchange base tube 2 located at the top. The first to sixth heat exchange base tubes 2 are located in the first to sixth rows respectively.
[0092] The bottommost heat exchange loop is mirrored in the first heat exchange loop. The first heat exchange base tube 2 is located in the third row, the third heat exchange base tube 2 is located in the fourth row, the second and fifth heat exchange base tubes 2 are located in the fifth row, and the fourth and sixth heat exchange base tubes 2 are located in the sixth row. The first, second, third, and fourth heat exchange base tubes 2 are arranged in a parallelogram. Specific Implementation Example 8
[0094] like Figure 12 As shown, in specific embodiment 8, the heat exchange base tube 2 of the surface cooler has 6 horizontal rows and 4 loops.
[0095] The topmost primary heat exchange loop includes eight heat exchange base tubes 2, with the first, third, and fifth heat exchange base tubes 2 located in the first row, the second, fourth, and sixth heat exchange base tubes 2 located in the second row, the seventh heat exchange base tube 2 located in the third row, and the eighth heat exchange base tube 2 located in the fourth row.
[0096] The bottommost heat exchange loop is mirrored in the first heat exchange loop. The first heat exchange base tube 2 is located in the third row, the third heat exchange base tube 2 is located in the fourth row, the second, fifth, and seventh heat exchange base tubes 2 are located in the fifth row, and the fourth, sixth, and eighth heat exchange base tubes 2 are located in the sixth row.
[0097] Multiple heat exchange units are set between the primary heat exchange loop and the final heat exchange loop, and each heat exchange unit includes 6 heat exchange loops.
[0098] The first and second heat exchange base tubes 2 of the topmost heat exchange loop are located in the first row, the third heat exchange base tube 2 is located in the second row, the fourth and fifth heat exchange base tubes 2 are located in the third row, and the sixth to eighth heat exchange base tubes 2 are located in the fourth to sixth rows respectively.
[0099] The first heat exchange base tube 2 of the second heat exchange circuit is located in the first row, the second and third heat exchange base tubes are located in the second row, the fourth heat exchange base tube 2 is located in the third row, the fifth and sixth heat exchange base tubes 2 are located in the fourth row, the seventh heat exchange base tube 2 is located in the fifth row, and the eighth heat exchange base tube 2 is located in the sixth row.
[0100] The first heat exchange base tube 2 of the third heat exchange loop is located in the first row, the second heat exchange base tube 2 is located in the second row, the third and fourth heat exchange base tubes 2 are located in the third row, the fifth heat exchange base tube 2 is located in the fourth row, the sixth and seventh heat exchange base tubes 2 are located in the fifth row, and the eighth heat exchange base tube 2 is located in the sixth row.
[0101] The first to third heat exchange base tubes 2 of the fourth heat exchange loop are located in the first to third rows respectively, the fourth and fifth heat exchange base tubes 2 are located in the fourth row, the sixth heat exchange base tube 2 is located in the fifth row, and the seventh and eighth heat exchange base tubes 2 are located in the sixth row.
[0102] The first and second heat exchange base tubes 2 of the fifth heat exchange loop are located in the first row, the third to fifth heat exchange base tubes 2 are located in the second to fourth rows respectively, the sixth and seventh heat exchange base tubes 2 are located in the fifth row, and the eighth heat exchange base tube 2 is located in the sixth row.
[0103] The first heat exchange base tube 2 of the sixth heat exchange loop at the bottom is located in the first row, the second and third heat exchange base tubes 2 are located in the second row, the fourth to sixth heat exchange base tubes 2 are located in the third to fifth rows respectively, and the seventh and eighth heat exchange base tubes 2 are located in the sixth row.
Claims
1. A freeze-resistant elliptical tube surface cooler, comprising a frame (1) and a heat exchange base tube (2), an inlet water collection pipe (3), and an outlet water collection pipe (4) mounted on the frame (1), characterized in that, The heat exchange base tubes (2) are arranged in multiple rows at intervals along the horizontal direction between the inlet water collection pipe (3) and the outlet water collection pipe (4). Each row of heat exchange base tubes (2) is arranged in multiple groups along the vertical direction. The heat exchange base tubes (2) of adjacent rows are staggered vertically. The adjacent heat exchange base tubes (2) are connected sequentially from low to high along the direction of cooling medium flow by means of U-shaped elbows (5) to form a heat exchange circuit. The heat exchange circuit is arranged in multiple groups along the vertical direction. The first heat exchange base tube (2) of the heat exchange circuit is connected to the inlet water collection pipe (3), and the last heat exchange base tube (2) of the heat exchange circuit is connected to the outlet water collection pipe (4).
2. The antifreeze elliptical tube surface cooler according to claim 1, characterized in that, The heat exchange circuit includes 2n heat exchange base tubes (2), where n is a positive integer.
3. The antifreeze elliptical tube surface cooler according to claim 1, characterized in that, The frame (1) is also provided with heat exchange fins (6). The vertical plane of the heat exchange fins (6) is perpendicular to the length direction of the heat exchange base tube (2). Multiple sets of heat exchange fins (6) are arranged at intervals along the water inlet direction. The heat exchange base tube (2) passes through multiple sets of heat exchange fins (6) in sequence.
4. The antifreeze elliptical tube surface cooler according to claim 1, characterized in that, The bottom of the water inlet pipe (3) and the bottom of the water outlet pipe (4) are respectively provided with a water inlet drain port (7) and a water outlet drain port (8), and both the water inlet drain port (7) and the water outlet drain port (8) have the freedom to open and close.
5. The antifreeze elliptical tube surface cooler according to claim 1, characterized in that, The top of the water outlet collection pipe (4) is provided with an air vent (9), which has the freedom to open and close.
6. The antifreeze elliptical tube surface cooler according to claim 1, characterized in that, The heat exchange base tube (2) has an elliptical cross-section along the vertical direction.
7. A freeze-resistant elliptical tube surface cooler according to claim 6, characterized in that, The aperture of the heat exchange base tube (2) gradually decreases along the flow direction of the cooling medium.