Multi-layer and bent heat exchange device

Abstract

The utility model belongs to the technical field of heat exchange equipment, particularly relates to a multilayer and bent heat exchange device, and solves the problem that the heat exchange efficiency cannot be flexibly adjusted to adapt to different actual requirements. The multi-layer and bent heat exchange device comprises at least one group of plate-shaped dry coolers and at least one group of plate-shaped condensers, the dry coolers and the condensers are arranged in a stacked mode and connected into a whole through fixing structures, and the middles of the dry coolers and the condensers are provided with mutually-adaptive bent structures. According to the device, different types or numbers of heat exchange units can be selected to be used according to different heat exchange requirements, the bent structure is arranged to adapt to a smaller space, and the effect of improving the heat exchange cost utilization rate and the space utilization rate is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat exchange equipment, and specifically relates to a multi-layered and bent heat exchange device. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid. Its working principle is based on the physical principle of thermal equilibrium, which states that heat from a high-temperature object will spontaneously transfer to a low-temperature object. Heat exchange is achieved by circulating hot water or other media through pipes, utilizing the temperature difference between the hot water in the pipes and the cold water in the container.

[0003] In current heat exchangers, only dry coolers or condensers are typically used to achieve specific heat exchange effects. However, for different heat exchange requirements, the heat exchange efficiency cannot be adjusted over a wide range, which is not conducive to improving the efficient use of heat exchange costs. Alternatively, some heat exchange devices may integrate multiple different heat exchange units, but they are generally planar and cannot be adapted to installation in small spaces, which is not conducive to improving heat exchange efficiency. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a multi-layered and bent heat exchange device.

[0005] To achieve the innovative objectives of this utility model, the following technical solutions can be used:

[0006] A multi-layered and bent heat exchange device includes at least one set of plate-shaped dry coolers and at least one set of condensers. The dry coolers and condensers are stacked and connected to each other by a fixed structure. The middle of the dry coolers and condensers is provided with mutually adapted bent structures.

[0007] The heat exchange device of this invention is assembled from multiple stacked dry coolers and condensers. The dry coolers and condensers, as different heat exchange units, can each meet different practical needs. Efficient temperature control can be achieved by activating some or all of the heat exchange units. A fixed structure connects the heat exchange units into a whole, ensuring the integrity of the device. A bending structure creates an angle of less than 180 degrees between the two ends of the heat exchange units, allowing for smaller installation spaces and improving heat exchange efficiency. Here, the installation space refers to the space along the length of the heat exchange units.

[0008] In the aforementioned multi-layered and bent heat exchange device, the dry cooler includes two parallel first manifolds, a plurality of spaced first flat tubes connected between the first manifolds, and first side plates located on both outer sides of the first flat tube group.

[0009] The condenser includes two parallel second manifolds, a plurality of spaced second flat tubes connected between the second manifolds, and second side plates located on both sides of the second flat tube group.

[0010] The dry cooler and condenser have similar compositions, both consisting of manifolds and flat tubes. The heat exchange medium is input from one manifold, flows through the flat tube to another manifold, and exchanges heat with the atmosphere through the flat tube wall. This is the existing technology. The two ends of the side plate are connected to the ends of the manifolds to protect the inner flat tubes and also to improve the structural strength.

[0011] In the aforementioned multi-layered and bent heat exchanger, the bent structure includes a bent section disposed in the middle of the first flat tube and the first side plate, and in the middle of the second flat tube and the second side plate, wherein the bent section is bent in the width direction.

[0012] One end of the first flat tube is bent towards the width side to form a bent section. The same applies to the bent sections on the first side plate, the second flat tube, and the second side plate. The bending state of the flat tube and the side plate of a single heat exchange unit is the same, ensuring a flat heat exchange surface.

[0013] In the aforementioned multi-layered and bent heat exchanger, the bending radius of each of the bent sections is the same, and the bending centers are located on the same straight line, which is adapted to the stacking direction of the dry cooler and the condenser.

[0014] The bent sections are smoothly connected tangentially to the straight sections at both ends. The radii of each bent section are the same, but the center of the circle extends along the arrangement direction of the heat exchange unit. This makes the distance between each bent section greater than the distance between the straight sections, increasing the space that air can pass through between the bent sections and thus improving the heat exchange efficiency.

[0015] In the aforementioned multi-layered and bent heat exchanger, the bending angle of the bent section is between 45 and 135 degrees.

[0016] In the aforementioned multi-layered and bent heat exchange device, the fixing structure includes a side plate disposed between the first side plate and the second side plate, the side plate being fixedly connected to the side of the first side plate and the second side plate away from the flat tube.

[0017] The side plate connects the corresponding first and second side plates together, realizing a fixed connection between each dry cooler and condenser, and achieving the integrity of the device.

[0018] In the aforementioned multi-layered and bent heat exchanger, both the first side plate and the second side plate include straight sections at both ends, the bent structure connects the straight sections at both ends, and the side plate is fixedly connected to the straight sections.

[0019] The side plates are only connected to the straight sections, while open gaps are maintained between the bent sections along the arrangement direction, allowing air to pass through. This ensures the fixed strength while helping to improve heat exchange efficiency.

[0020] In the aforementioned multi-layered and bent heat exchanger, the dry cooler is located on the outer side, and the condenser is located on the inner side.

[0021] The dry cooler is provided in one set, and the condenser is provided in two sets, with adjacent condensers connected in series via cross tubes.

[0022] The dry cooler is located on the outside, which helps to increase the contact area with the air and improve the efficiency of heat exchange when the heat exchange requirements are relatively low. Having two sets of condensers helps to meet high heat exchange requirements.

[0023] In the aforementioned multi-layered and bent heat exchanger, one of the second manifolds of the intermediate condenser is higher than the first manifold of the adjacent dry cooler and the second manifold of the other condenser.

[0024] The height of each heat exchange unit is different, and the height direction is the extension direction of the straight section. The second manifold of the middle condenser is higher than the manifold on the adjacent side, which helps to make way for the second adapter seat on the second manifold on the inner side, which is used to connect the inlet and outlet pipes. This avoids the second adapter seat protruding when it is set on the second manifold, thus improving space utilization and heat exchange efficiency.

[0025] In the above-mentioned multi-layered and bent heat exchange device, the first manifold of the dry cooler is provided with a first adapter seat that communicates with the internal manifold cavity. The first adapter seat is provided with a first inlet and outlet pipe. The inner end of the first inlet and outlet pipe is inserted into the socket of the first adapter seat, and the outer end is provided with a sleeve interface for connecting the heat exchange medium conveying pipe. An exhaust valve is provided between the outer end and the inner end.

[0026] The condenser has a second adapter on its second manifold that communicates with the internal manifold cavity. The second adapter has a second inlet and outlet pipe, and the inner end of the second inlet and outlet pipe is inserted into the connecting protrusion of the first adapter.

[0027] The dry cooler uses a liquid heat exchange medium. Since there is no phase change, the pressure and pressure variations are minimal, thus the structural strength requirements for connection points are relatively low. The spigot is directly installed on the first adapter, reducing manufacturing costs. The first inlet and outlet pipes are directly inserted into this spigot and fixed by welding, simplifying the connection. Furthermore, the vent valve helps to expel any gas that has entered or remains in the manifold, preventing pressure changes caused by phase changes and thus ensuring stable heat exchange. The condenser, however, involves a heat exchange medium that changes between gas and liquid phases. The gas phase may have higher pressure, thus requiring higher strength at connection points. The second adapter connects to the second inlet and outlet pipes via a connecting ring. The second adapter and connecting ring have a larger contact area with the second inlet and outlet pipes, improving structural strength.

[0028] Compared with the prior art, the present invention has the following main advantages:

[0029] 1. This heat exchange device is assembled from multiple dry coolers and condensers stacked together. The dry coolers and condensers are different heat exchange units that can be used to meet different actual needs. By opening some or all of the heat exchange units, efficient temperature control can be achieved. The bent structure makes the two ends of the heat exchange unit form an angle of less than 180 degrees, which can be adapted to smaller installation spaces and improve heat exchange efficiency.

[0030] 2. The spacing between each bend is greater than the spacing between straight sections, which increases the space that air can pass through between the bends, thus improving heat exchange efficiency.

[0031] 3. The side plates connect the corresponding first and second side plates together, realizing the fixed connection between each dry cooler and condenser, and achieving the integrity of the device.

[0032] 4. The side plates are only connected to the straight sections, while the bent sections have open gaps along the arrangement direction, through which air can pass. This helps to improve heat exchange efficiency while ensuring the fixed strength.

[0033] 5. The dry cooler is located on the outside, which helps to increase the contact area with the air and improve the efficiency of heat exchange when the heat exchange requirements are relatively low. The two sets of condensers are more conducive to meeting high heat exchange requirements. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure provided by this utility model;

[0035] Figure 2 yes Figure 1 Enlarged detail view of point A in the middle;

[0036] Figure 3 This is a side view diagram provided by this utility model;

[0037] Figure 4 This is a schematic diagram of the stacked structure of the dry cooler and condenser provided by this utility model.

[0038] In the figure, the components are: 1. Dry cooler; 2. Condenser; 3. Fixed structure; 4. Bending structure; 5. First manifold; 6. First flat tube; 7. First side plate; 8. Second manifold; 9. Second flat tube; 10. Second side plate; 11. Bending section; 12. Side plate; 13. Straight section; 14. Cross pipe; 15. First adapter seat; 16. First inlet / outlet pipe; 17. Socket interface; 18. Exhaust valve; 19. Second adapter seat; 20. Second inlet / outlet pipe; 21. Connecting protrusion ring; 22. Socket. Detailed Implementation

[0039] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0040] Specific implementation examples Figure 1-4 As shown, this multi-layered and bent heat exchange device includes a plate-shaped dry cooler 1 and two condensers 2. The dry cooler 1 is located on the outer side, and the condensers 2 are located on the inner side. Adjacent condensers 2 are connected in series by cross tubes 14. The dry cooler 1 and condensers 2 are stacked and connected as a whole by a fixing structure 3. The middle of the dry cooler 1 and condensers 2 is provided with mutually adaptable bending structures 4.

[0041] Specifically, the heat exchange device is assembled from multiple stacked dry coolers 1 and condensers 2. The dry coolers 1 and condensers 2 serve as different heat exchange units, each catering to different practical needs. Efficient temperature control can be achieved by activating some or all of the heat exchange units. The fixing structure 3 connects all the heat exchange units into a single unit, ensuring the integrity of the device.

[0042] like Figure 1 , 3 As shown in Figure 4, the dry cooler 1 includes two parallel first manifolds 5, connected by a plurality of spaced-apart first flat tubes 6, and first side plates 7 located on both outer sides of the first flat tube group 6. The condenser 2 includes two parallel second manifolds 8, connected by a plurality of spaced-apart second flat tubes 9, and second side plates 10 located on both outer sides of the second flat tube group 9. The bending structure 4 includes a bending section 11 located in the middle of the first flat tubes 6 and the first side plates 7, and in the middle of the second flat tubes 9 and the second side plates 10. The bending section 11 bends in the width direction at a bending angle of 75 degrees. The bending radii of each bending section 11 are the same, and the bending centers are located on the same straight line, which is consistent with the stacking direction of the dry cooler 1 and the condenser 2.

[0043] Specifically, one end of the first flat tube 6 is bent towards the width side to form a bent section 11. The bent sections 11 on the first side plate 7, the second flat tube 9, and the second side plate 10 are similarly bent. The bending state of the flat tubes and side plates of a single heat exchange unit is the same, ensuring a flat heat exchange surface. The bent sections 11 are smoothly and tangentially connected to the straight sections 13 at both ends. The radii of each bent section 11 are the same, but the center of the circle extends along the arrangement direction of the heat exchange units, making the distance between each bent section 11 greater than the distance between the straight sections 13. This increases the space that air can pass through between the bent sections 11, which is beneficial to improving heat exchange efficiency.

[0044] like Figure 1 , 3 As shown, the fixing structure 3 includes a side plate 12 disposed between the first side plate 7 and the second side plate 10. The side plate 12 is fixedly connected to the side of the first side plate 7 and the second side plate 10 away from the flat tube. Both the first side plate 7 and the second side plate 10 include straight sections 13 located at both ends. The bending structure 4 connects the straight sections 13 at both ends, and the side plate 12 is fixedly connected to the straight sections 13.

[0045] Specifically, the side plate 12 connects the corresponding first side plate 7 and second side plate 10 together, realizing a fixed connection between each dry cooler 1 and condenser 2, and achieving the integrity of the device. The side plate 12 is only connected to the straight section 13, while the bent sections 11 retain an open gap along the arrangement direction, through which air can pass, which helps to improve heat exchange efficiency while ensuring fixed strength.

[0046] As an optimization of this embodiment, one of the second manifolds 8 of the condenser 2 located in the middle is higher than the first manifold 5 of the adjacent dry cooler 1 and the second manifold 8 of the other condenser 2.

[0047] Specifically, each heat exchange unit has a different height, and the height direction is the extension direction of the straight section 13. The second manifold 8 of the middle condenser 2 is higher than the manifold on the adjacent side, which helps to make way for the second adapter 19 on the second manifold 8 on the inner side, which is used to connect the inlet and outlet pipes. This prevents the second adapter 19 from protruding when it is set on the second manifold 8, thereby improving space utilization and heat exchange efficiency.

[0048] like Figure 1 , 2As shown in Figure 3, the first manifold 5 of the dry cooler 1 is provided with a first adapter 15 communicating with the internal manifold cavity. The first adapter 15 is provided with a first inlet and outlet pipe 16. The inner end of the first inlet and outlet pipe 16 is inserted into the socket 22 of the first adapter 15, and the outer end is provided with a sleeve interface 17 for connecting the heat exchange medium conveying pipe. An exhaust valve 18 is provided between the outer end and the inner end. The second manifold 8 of the condenser 2 is provided with a second adapter 19 communicating with the internal manifold cavity. The second adapter 19 is provided with a second inlet and outlet pipe 20. The inner end of the second inlet and outlet pipe 20 is inserted into the connecting protrusion 21 of the first adapter 15.

[0049] Specifically, the heat exchange medium flowing in the dry cooler 1 is liquid. Since there is no phase change, the pressure and pressure changes are small. Therefore, the structural strength requirements between the connection points are relatively low. The spigot 22 is directly opened on the first adapter 15, reducing processing costs. The first inlet and outlet pipes 16 are directly inserted into the spigot 22 and fixed by welding, making the connection simple. In addition, the exhaust valve 18 helps to discharge the gas that has entered or remained in the manifold, avoiding the pressure change caused by the phase change of the gas, which could damage the connection between the pipes and ensure the stable operation of heat exchange. The condenser 2 is different. The heat exchange medium in it changes between gas and liquid phases. The pressure may be higher in the gas phase, so the requirements for the connection points are also higher. The second adapter 19 is connected to the second inlet and outlet pipes 20 through the connecting convex ring 21. The second adapter 19 and the connecting convex ring 21 have a larger contact area with the second inlet and outlet pipes 20, which is beneficial to improving the structural strength between them.

[0050] Specific working principle: When the heat exchange demand is low, only the dry cooler 1 can be used. The corresponding heat exchange medium is input into the dry cooler 1 through the first inlet and outlet pipes 16. When the heat exchange medium passes through the first flat tube 6, it exchanges heat with the air through the tube wall. When the heat exchange demand is high, only one or two condensers 2 can be used, and the dry cooler 1 can also be used. The heat exchange medium is input through the corresponding inlet and outlet pipes to achieve efficient heat exchange.

[0051] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A multi-layered and bent heat exchange device, characterized in that, It includes at least one set of dry coolers (1) in the form of plates and at least one set of condensers (2). The dry coolers (1) and condensers (2) are stacked and connected to each other by a fixing structure (3). The dry coolers (1) and condensers (2) are provided with mutually adaptable bending structures (4) in the middle.

2. The multi-layered and bent heat exchanger according to claim 1, characterized in that, The dry cooler (1) includes two parallel first manifolds (5), and several spaced first flat tubes (6) are connected between the first manifolds (5), as well as first side plates (7) located on both sides of the first flat tube group. The condenser (2) includes two parallel second manifolds (8), and several second flat tubes (9) are connected between the second manifolds (8) and a second side plate (10) located on both sides of the second flat tube (9) group.

3. The multi-layered and bent heat exchanger according to claim 2, characterized in that, The bending structure (4) includes a bending section (11) disposed in the middle of the first flat tube (6) and the first side plate (7), and in the middle of the second flat tube (9) and the second side plate (10), wherein the bending section (11) bends in the width direction.

4. The multi-layered and bent heat exchanger according to claim 3, characterized in that, Each of the aforementioned bending segments (11) has the same bending radius, and the bending center is located on the same straight line, which is compatible with the stacking direction of the dry cooler (1) and the condenser (2).

5. The multi-layered and bent heat exchanger according to claim 3, characterized in that, The bending angle of the bending segment (11) is between 45 and 135 degrees.

6. The multi-layered and bent heat exchanger according to claim 2, characterized in that, The fixing structure (3) includes a side plate (12) disposed between the first side plate (7) and the second side plate (10), and the side plate (12) is fixedly connected to the side of the first side plate (7) and the second side plate (10) away from the flat tube.

7. The multi-layered and bent heat exchanger according to claim 6, characterized in that, The first side plate (7) and the second side plate (10) both include straight sections (13) at both ends. The bending structure (4) connects the straight sections (13) at both ends. The side plate (12) is fixedly connected to the straight sections (13).

8. The multi-layered and bent heat exchanger according to any one of claims 1-7, characterized in that, The dry cooler (1) is located on the outside, and the condenser (2) is located on the inside; The dry cooler (1) is provided in one set, and the condenser (2) is provided in two sets. The adjacent condensers (2) are connected in series through cross tubes (14).

9. The multi-layered and bent heat exchanger according to claim 8, characterized in that, One of the second manifolds (8) of the middle condenser (2) is higher than the first manifold (5) of the adjacent dry cooler (1) and the second manifold (8) of the other condenser (2).

10. The multi-layered and bent heat exchanger according to any one of claims 1-7, characterized in that, The dry cooler (1) has a first adapter (15) on its first manifold (5) that communicates with the internal manifold cavity. The first adapter (15) has a first inlet and outlet pipe (16). The inner end of the first inlet and outlet pipe (16) is inserted into the socket (22) of the first adapter (15), and the outer end is provided with a sleeve interface (17) for connecting the heat exchange medium conveying pipe. An exhaust valve (18) is provided between the outer end and the inner end. The condenser (2) has a second adapter (19) on its second manifold (8) that communicates with the internal manifold cavity. The second adapter (19) has a second inlet and outlet pipe (20) on it. The inner end of the second inlet and outlet pipe (20) is inserted into the connecting protrusion (21) of the first adapter (15).

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