A reboiler

Abstract

The utility model discloses a reboiler, include: casing, the casing has first side plate, second side plate, and the intermediate part is located between first side plate and second side plate, the intermediate part has the upper plate, the lower plate, the upper plate is equipped with the export, and the lower plate is equipped with the import, first heat exchanger core unit is located in the cavity, has first channel, and first heat exchanger core unit and first side plate form first gap, second heat exchanger core unit is located in the casing, has second channel, and is spaced apart with first heat exchanger core unit, forms second gap, and forms third gap with second side plate, first baffle blocks first gap, second baffle blocks second gap, third baffle blocks third gap, the import supplies external fluid to flow in, and fluid can flow through first channel, second channel, and the export supplies fluid to flow out, the utility model can solve the uneven distribution of the internal fluid of the existing reboiler and lead to the problem of low heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of reboiler technology, and in particular to a reboiler. Background Technology

[0002] Reboilers are key pieces of equipment in chemical, energy, and other fields, used to heat external fluids and revaporize them. Currently, aluminum plate-fin heat exchangers are widely used as the core heating element in reboilers. These reboilers typically have multiple aluminum plate-fin heat exchanger units arranged within their shells. The liquid to be heated flows through the finned channels of the aluminum plate-fin heat exchanger, achieving vaporization through heat exchange with the heat exchange medium.

[0003] However, existing reboiler structures of this type have a significant drawback: uneven fluid distribution leading to a decrease in heat transfer efficiency. Specifically, due to manufacturing and installation tolerances and thermal expansion, unavoidable flow gaps generally exist between the aluminum plate-fin heat exchanger unit and the inner wall of the reboiler shell, as well as between adjacent aluminum plate-fin heat exchanger units. In actual operation, some liquid selectively flows through these gaps with lower resistance, rather than entirely through the designed finned channels with high-efficiency heat transfer surfaces. Since the temperature in the gap region is usually lower than that in the core region of the finned channels, the heating effect of the liquid at the gaps is far less than that within the finned channels, thus reducing the overall heat transfer efficiency of the reboiler and increasing energy consumption.

[0004] Therefore, there is an urgent need for a reboiler that can distribute the fluid evenly and thus improve the heat exchange efficiency. Utility Model Content

[0005] The purpose of this invention is to solve the problem of low heat exchange efficiency caused by uneven fluid distribution inside existing reboilers.

[0006] To solve the above-mentioned technical problems, an embodiment of this utility model discloses a reboiler, comprising:

[0007] The housing has a first side plate, a second side plate, and a middle section along its length, the middle section being located between the first side plate and the second side plate; along its height, the middle section has an upper plate and a lower plate; the upper plate has an outlet that penetrates the upper plate along its height; the lower plate has an inlet that penetrates the lower plate along its height; the first side plate, the second side plate, and the middle section together form a cavity;

[0008] A first heat exchanger core unit is disposed in the cavity and has a first channel along the height direction, the first channel penetrating the first heat exchanger core unit along the height direction; along the length direction, a first gap is formed between the first heat exchanger core unit and the first side plate;

[0009] A second heat exchanger core unit is disposed in the cavity and has a second channel along the height direction, the second channel penetrating the second heat exchanger core unit along the height direction; it is spaced apart from the first heat exchanger core unit along the length direction, a second gap is formed between the first heat exchanger core unit and the second heat exchanger core unit; a third gap is formed between the second heat exchanger core unit and the second side plate;

[0010] A first baffle extends along the length direction and is disposed between the first heat exchanger core unit and the first side plate, thereby blocking the first gap.

[0011] The second baffle extends along the length direction and is disposed between the first heat exchanger core unit and the second heat exchanger core unit, and blocks the second gap;

[0012] A third baffle extends along the length direction and is disposed between the second heat exchanger core unit and the second side plate, thereby blocking the third gap.

[0013] The inlet allows external fluid to flow in, and the fluid can flow through the first channel and the second channel. The outlet allows the fluid to flow out.

[0014] By adopting the above technical solution and arranging two heat exchanger core units side by side, the total heat exchange area is increased, thereby improving heating efficiency. Inlet and outlet are respectively provided in the upper and lower parts of the shell to limit the flow direction of external fluid from the inlet to the outlet.

[0015] From the first heat exchanger core unit to the second heat exchanger core unit, the first and third gaps between the shell and the two heat exchanger core units are blocked by the first and third baffles, respectively, and the second gap between the two heat exchanger core units is blocked by the second baffle. This effectively prevents external fluid from passing through these lower temperature gap areas, forcing the liquid to be fully guided and flow through the internal channels of the higher temperature first and second heat exchanger core units, namely the first and second channels, thereby achieving sufficient heat exchange with the heat exchange surface and improving the overall heat exchange efficiency of the reboiler.

[0016] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a reboiler, wherein along the width direction of the shell, the first heat exchanger core unit has a first side and a second side, and the second heat exchanger core unit has a third side and a fourth side.

[0017] Along the width direction of the housing, a fourth gap is formed between the first side and the middle portion, a fifth gap is formed between the second side and the middle portion, a sixth gap is formed between the third side and the middle portion, and a seventh gap is formed between the fourth side and the middle portion;

[0018] Also includes:

[0019] A fourth baffle extends along the length direction, is disposed between the first side and the middle part, and blocks the fourth gap;

[0020] A fifth baffle extends along the length direction, is disposed between the second side and the middle part, and blocks the fifth gap;

[0021] A sixth baffle extends along the length direction, is disposed between the third side and the middle part, and blocks the sixth gap;

[0022] A seventh baffle extends along the length direction, is disposed between the fourth side and the middle portion, and blocks the seventh gap.

[0023] By employing the above technical solution, baffles are added to the transverse gaps (i.e., the fourth, fifth, sixth, and seventh gaps) between the two sides of the first and second heat exchanger core units and the shell, effectively blocking the bypass channels in the transverse gaps. This forces the liquid to be heated to be unable to flow through these lower-temperature side gaps, but instead is fully guided to the higher-temperature internal channels of the heat exchanger core units (i.e., the first and second channels), thereby ensuring sufficient heat exchange between the liquid and the first and second heat exchanger core units, and improving the overall heat exchange efficiency of the reboiler.

[0024] According to another specific embodiment of the present invention, a reboiler is disclosed, wherein along the height direction of the shell, the first heat exchanger core unit has a first upper surface, and the second heat exchanger core unit has a second upper surface; the first upper surface and the second upper surface are flush.

[0025] The plane containing the first baffle, second baffle, third baffle, fourth baffle, fifth baffle, sixth baffle, and seventh baffle is coplanar with the first upper surface and the second upper surface.

[0026] By employing the above technical solution, all baffles are positioned at the upper part of the first and second heat exchanger core units, particularly coplanar with the upper surface. This ensures sufficient contact between the fluid to be heated and the interior of the first and second heat exchanger core units, while also guiding the heated liquid or gas to move only upwards. If the baffles are positioned in the middle or lower part of the first and second heat exchanger core units, the heated liquid or gas will be induced to escape again into the low-temperature gap between the first and second heat exchanger core units and the shell, instead of flowing directly to the outlet, thus severely reducing heat exchange efficiency.

[0027] According to another specific embodiment of the present invention, a reboiler is disclosed, which further includes:

[0028] A first support plate extends along the width direction of the housing and is located between the first heat exchanger core unit and the first side plate, and is fixedly connected to the first heat exchanger core unit.

[0029] The second support plate extends along the width direction and is located between the first heat exchanger core unit and the second heat exchanger core unit, and is fixedly connected to the first heat exchanger core unit.

[0030] The third support plate extends along the width direction and is located between the first heat exchanger core unit and the second heat exchanger core unit, and is fixedly connected to the second heat exchanger core unit.

[0031] The fourth support plate extends along the width direction and is located between the second heat exchanger core unit and the second side plate, and is fixedly connected to the second heat exchanger core unit;

[0032] Multiple positioning pins pass through the first support plate and the first baffle, the second support plate and the second baffle, the third support plate and the second baffle, and the fourth support plate and the third baffle, respectively;

[0033] The first support plate and the first baffle, the second support plate and the second baffle, the third support plate and the second baffle, and the fourth support plate and the third baffle are all fixedly connected by the positioning pin.

[0034] By adopting the above technical solution, support plates are installed on the first and second heat exchanger core units, and these plates are detachably connected to the baffles via connectors. This improves the versatility of the structure and the flexibility of material selection, effectively solving the problem of direct connection between the first and second heat exchanger core units and the baffles due to different materials. For example, if the first and second heat exchanger core units are made of aluminum and the baffles are made of carbon steel, direct welding is difficult. Furthermore, the pin connection facilitates equipment assembly, daily maintenance, and component replacement, ensuring long-term stable operation.

[0035] According to another specific embodiment of the present invention, a reboiler is disclosed, which further includes:

[0036] The first reinforcing rib, along the height direction, is located below the first support plate and is fixedly connected to the first support plate and the first heat exchanger core unit, respectively.

[0037] The second reinforcing rib is located below the second support plate along the height direction and is fixedly connected to the second support plate and the first heat exchanger core unit, respectively.

[0038] The third reinforcing rib, along the height direction, is located below the third support plate and is fixedly connected to the third support plate and the second heat exchanger core unit, respectively.

[0039] The fourth reinforcing rib is located below the fourth support plate along the height direction and is fixedly connected to the fourth support plate and the second heat exchanger core unit, respectively.

[0040] By adopting the above technical solution, and by setting reinforcing ribs and placing them below the corresponding support plates and fixing them to the support plates and heat exchanger core units, the ability of the support plates to resist fluid impact and vibration is significantly enhanced, preventing them from deforming and failing.

[0041] According to another specific embodiment of the present invention, a reboiler is disclosed, which further includes:

[0042] Multiple first support blocks extend along the length direction and are located between the first side plate and the first heat exchanger core unit, and are fixedly connected to the first side plate.

[0043] Multiple second support blocks extend along the length direction and are located between the second side plate and the second heat exchanger core unit, and are fixedly connected to the second side plate;

[0044] Multiple first screws respectively penetrate the first support block and the first baffle, and the second support block and the third baffle;

[0045] The first support block and the first baffle, and the second support block and the third baffle are all fixedly connected by the first screw.

[0046] By adopting the above technical solution, support blocks are set on both side plates of the shell (i.e., the first side plate and the second side plate), and the support blocks are fixedly connected to the baffles with screws, which facilitates installation and disassembly. At the same time, it solves the problem of curved surface connections. Specifically, since the first and second side plates are mostly arc-shaped, directly welding the baffles with larger side areas to the curved surface is not only difficult to position, but also prone to welding deformation or failure due to thermal stress concentration. In contrast, the support blocks have smaller side areas than the baffles, making them easier to weld to the curved shell. The baffles are then fixed with connectors, thus perfectly avoiding the process risks of direct welding of the baffles while ensuring structural strength.

[0047] According to another specific embodiment of the present invention, a reboiler is disclosed, which further includes:

[0048] Multiple second screws;

[0049] The fifth support plate extends along the length direction and is located between the first side and the middle part, and is fixedly connected to the middle part. The second screw passes through the fifth support plate and the fourth baffle respectively.

[0050] The sixth support plate extends along the length direction and is located between the second side and the middle part, and is fixedly connected to the middle part. The second screw passes through the sixth support plate and the fifth baffle respectively.

[0051] The seventh support plate extends along the length direction and is located between the third side and the middle part, and is fixedly connected to the middle part. The second screw passes through the seventh support plate and the sixth baffle respectively.

[0052] The eighth support plate extends along the length direction and is located between the fourth side and the middle part, and is fixedly connected to the middle part. The second screw passes through the eighth support plate and the seventh baffle respectively.

[0053] The fifth support plate and the fourth baffle, the sixth support plate and the fifth baffle, the seventh support plate and the sixth baffle, and the eighth support plate and the seventh baffle are all fixedly connected by the second screw.

[0054] By adopting the above technical solution, compared to the gaps between the side plates of the shell and the first and second heat exchanger core units, the gaps between the shell and the sides of the first and second heat exchanger core units are smaller, resulting in relatively weaker fluid impact. Therefore, a stable support can be formed simply by installing a support plate on the shell and connecting it to the baffle. This eliminates the complexity of directly connecting the shell to the first and second heat exchanger core units, while also ensuring that the baffle has sufficient resistance to deformation under low fluid loads, achieving a balance between cost and reliability.

[0055] According to another specific embodiment of the present invention, a reboiler is disclosed, which further includes:

[0056] The fifth reinforcing rib, along the height direction, is located above the fifth support plate and is fixedly connected to the fifth support plate and the middle part, respectively.

[0057] The sixth reinforcing rib, along the height direction, is located above the sixth support plate and is fixedly connected to the sixth support plate and the middle part, respectively.

[0058] The seventh reinforcing rib, along the height direction, is located above the seventh support plate and is fixedly connected to the seventh support plate and the middle part, respectively.

[0059] The eighth reinforcing rib is located above the eighth support plate along the height direction and is fixedly connected to the eighth support plate and the middle part, respectively.

[0060] According to another specific embodiment of the present invention, a reboiler is disclosed. The first heat exchanger core unit includes one or more first plate-fin heat exchangers. Each first plate-fin heat exchanger is provided with a plurality of first fins. The first fins extend along the height direction and are spaced apart along the width direction of the shell to form a plurality of first channels.

[0061] The second heat exchanger core unit includes one or more second plate-fin heat exchangers. Each second plate-fin heat exchanger is provided with a plurality of second fins. The second fins extend along the height direction and are spaced apart along the width direction of the shell to form a plurality of second channels.

[0062] By adopting the above technical solution, the first heat exchanger core unit and the second heat exchanger core unit are specifically defined as being composed of plate-fin heat exchangers, and their fins are clearly arranged at intervals along the width direction, thereby forming multiple internal heating channels, namely multiple first channels and second channels. The fluid flows through the fins along the first channels and second channels, which not only greatly expands the effective heat transfer area, but also the flow channels along the height direction work in conjunction with gravity and the rising path of bubbles, significantly reducing flow resistance and promoting gas-liquid separation and discharge.

[0063] According to another specific embodiment of the present invention, a reboiler is disclosed, wherein the first baffle, the second baffle, and the third baffle are all spliced ​​together along the width direction of the shell.

[0064] By adopting the above technical solution, the large-size, monolithic baffle is designed as a modular structure composed of spliced ​​components. This breaks down the original single-stage hoisting, positioning, and fixing process into multiple, more easily operable modular installation steps. This reduces the requirements for large installation equipment and complex tooling, effectively solving the problems of inconvenience in operation and difficulty in ensuring positioning accuracy when installing large-area baffles within narrow housings. Attached Figure Description

[0065] Figure 1 This figure shows a perspective view of a reboiler according to an embodiment of the present invention;

[0066] Figure 2 This is a front view of a reboiler according to an embodiment of the present invention;

[0067] Figure 3 Show Figure 2 A cross-sectional view along the AA direction;

[0068] Figure 4 This invention illustrates a three-dimensional view of the interior of a reboiler according to an embodiment of the present invention. Figure 1 ;

[0069] Figure 5 This invention illustrates a three-dimensional view of the interior of a reboiler according to an embodiment of the present invention. Figure 2 ;

[0070] Figure 6 This figure shows a top view of a reboiler according to an embodiment of the present invention;

[0071] Figure 7 Show Figure 6 Cross-sectional view along the BB direction;

[0072] Figure 8 Show Figure 4 Enlarged view of section K in the middle;

[0073] Figure 9This is a top view of a partial internal structure of a reboiler according to an embodiment of the present invention;

[0074] Figure 10 Show Figure 3 Enlarged view of section F in the middle;

[0075] Figure 11 Show Figure 3 Enlarged view of section G in the middle;

[0076] Figure 12 Show Figure 3 Enlarged view of the middle H section;

[0077] Figure 13 Show Figure 3 Enlarged view of the middle section (I);

[0078] Figure 14 Show Figure 3 Enlarged view of section E in the middle;

[0079] Figure 15 Show Figure 3 Enlarged view of the middle J section;

[0080] Figure 16 Show Figure 6 A cross-sectional view along the CC direction;

[0081] Figure 17 Show Figure 16 Enlarged view of the middle M section;

[0082] Figure 18 Show Figure 6 A cross-sectional view along the DD direction;

[0083] Figure 19 Show Figure 18 Enlarged view of part N in the middle.

[0084] Reboiler 100;

[0085] Shell 110; First side plate 111; Second side plate 112; Middle section 113; Upper plate 1131; Outlet 11311; Lower plate 1132; Inlet 11321; Cavity 114;

[0086] First heat exchanger core unit 120; first channel 121; first side 122; second side 123; first upper surface 124; first plate-fin heat exchanger 125; first fin 1251;

[0087] Second heat exchanger core unit 130; second channel 131; third side 132; fourth side 133; second upper surface 134; second plate-fin heat exchanger 135; second fin 1351;

[0088] First gap 141; Second gap 142; Third gap 143; Fourth gap 144; Fifth gap 145; Sixth gap 146; Seventh gap 147;

[0089] First baffle 151; Second baffle 152; Third baffle 153; Fourth baffle 154; Fifth baffle 155; Sixth baffle 156; Seventh baffle 157;

[0090] First support plate 161; Second support plate 162; Third support plate 163; Fourth support plate 164; Fifth support plate 165; Sixth support plate 166; Seventh support plate 167; Eighth support plate 168;

[0091] Locating pin 171; First screw 172; Second screw 173;

[0092] First reinforcing rib 181; Second reinforcing rib 182; Third reinforcing rib 183; Fourth reinforcing rib 184; Fifth reinforcing rib 185; Sixth reinforcing rib 186; Seventh reinforcing rib 187; Eighth reinforcing rib 188;

[0093] First support block 191; Second support block 192. Detailed Implementation

[0094] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0095] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0096] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0097] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0098] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0099] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0100] In existing reboilers, unavoidable assembly gaps exist between heat exchangers and between heat exchangers and the inner wall of the shell. Because these gaps are far from the core heating surface, they form low-temperature gap paths. In actual operation, some fluid will choose to flow directly through these low-temperature bypass gap paths instead of flowing through the designed high-temperature heat exchange channels. This leads to a reduction in effective heat exchange flow rate, wasted heat exchange area, and thus significantly reduces the overall heat exchange efficiency of the reboiler.

[0101] refer to Figure 1 , Figure 2 , Figure 3 This application provides a reboiler 100, including: a shell 110, a first heat exchanger core unit 120, a second heat exchanger core unit 130, a first baffle 151, a second baffle 152, a third baffle 153, a fourth baffle 154, a fifth baffle 155, a sixth baffle 156, and a seventh baffle 157. The shell 110 extends along its length... Figure 1 (in the X direction), it has a first side plate 111, a second side plate 112, and a middle part 113, with the middle part 113 located between the first side plate 111 and the second side plate 112. The first side plate 111 and the second side plate 112 are both hemispherical, and the middle part 113 is cylindrical.

[0102] In some possible implementations, the shapes of the first side plate 111 and the second side plate 112 include, but are not limited to, hemispherical shapes, and can be elliptical, flat, conical, etc., and are not limited in this application. The shape of the middle part 113 includes, but is not limited to, a cylindrical structure, and can be a cuboid, sphere, etc., and is not limited in this application.

[0103] refer to Figure 1 , Figure 2 , Figure 3 In this embodiment, along the height direction of the housing 110 ( Figure 1 In the Z-direction, the middle section 113 has an upper plate 1131 and a lower plate 1132. The upper plate 1131 has an outlet 11311 that penetrates the upper plate 1131 along the height direction; the lower plate 1132 has an inlet 11321 that penetrates the lower plate 1132 along the height direction; the inlet 11321 allows external fluid to flow in, and the outlet 11311 allows fluid to flow out. The first side plate 111, the second side plate 112, and the middle section 113 together form a cavity 114. By providing an inlet 11321 and an outlet 11311 at the upper and lower ends of the housing 110 respectively, the flow direction of external fluid flowing in from the inlet 11321 and flowing out from the outlet 11311 is limited.

[0104] refer to Figure 1 , Figure 2 , Figure 3 In this embodiment, the housing 110 is made of carbon steel. In some possible embodiments, the material of the housing 110 may include, but is not limited to, carbon steel, stainless steel, aluminum alloy, titanium alloy, or copper alloy, etc., and this application does not limit the material.

[0105] refer to Figure 1 , Figure 2 , Figure 3 In this embodiment, a first heat exchanger core unit 120 is disposed in a cavity 114 and has a first channel 121 along the height direction, which penetrates the first heat exchanger core unit 120 along the height direction. A first gap 141 is formed between the first heat exchanger core unit 120 and the first side plate 111 along the length direction. A second heat exchanger core unit 130 is disposed in the cavity 114 and has a second channel 131 along the height direction, which penetrates the second heat exchanger core unit 130 along the height direction. It is spaced apart from the first heat exchanger core unit 120 along the length direction. A second gap 142 is formed between the first heat exchanger core unit 120 and the second heat exchanger core unit 130, and a third gap 143 is formed between the second heat exchanger core unit 130 and the second side plate 112.

[0106] By arranging two heat exchanger core units side by side, the total heat exchange area is increased, thereby improving heating efficiency.

[0107] refer to Figure 1 , Figure 2 , Figure 3 In this embodiment, the first baffle 151 extends along the length direction and is a plate-like structure with one end curved. It is disposed between the first heat exchanger core unit 120 and the first side plate 111, and blocks the first gap 141. The second baffle 152 extends along the length direction and is a rectangular plate-like structure. It is disposed between the first heat exchanger core unit 120 and the second heat exchanger core unit 130, and blocks the second gap 142. The third baffle 153 extends along the length direction and is a plate-like structure with one end curved. It is disposed between the second heat exchanger core unit 130 and the second side plate 112, and blocks the third gap 143.

[0108] In some possible implementations, the shape of the first baffle 151 includes, but is not limited to, having an arc-shaped end to block the first gap 141. Its specific shape is adapted to the contour of the first side plate 111; for example, it can be a rectangular, trapezoidal, or other plate-like structure. The shape of the second baffle 152 includes, but is not limited to, a rectangle to block the second gap 142; it can be a strip-shaped, irregularly shaped, or other plate-like structure. The shape of the third baffle 153 includes, but is not limited to, having an arc-shaped end to block the third gap 143; its specific shape is adapted to the contour of the second side plate 112; for example, it can be a rectangular, trapezoidal, or other plate-like structure.

[0109] From the first heat exchanger core unit 120 to the second heat exchanger core unit 130, the first baffle 151 and the third baffle 153 between the shell 110 and the two heat exchanger core units are blocked respectively, and the second baffle 152 blocks the second gap 142 between the two heat exchanger core units. This effectively prevents external fluid from passing through these lower temperature gap areas, forcing the liquid to be fully guided and flow through the internal channels of the higher temperature first heat exchanger core unit 120 and second heat exchanger core unit 130, namely the first channel 121 and the second channel 131, thereby achieving sufficient heat exchange with the heat exchange surface and improving the overall heat exchange efficiency of the reboiler 100.

[0110] refer to Figure 3 In this embodiment, the flow path of the external fluid is illustrated. Figure 3(shown by dashed lines) External fluid flows out from inlet 11321 and flows along paths a1, a2, and a3 respectively. Due to the presence of the first baffle 151 and the second baffle 152, the fluid along paths a2 and a3 cannot flow through the first gap 141 and the second gap 142, but can only converge at path a1 through the first channel 121 and flow out from outlet 11311. External fluid flows out from inlet 11321 and flows along paths b1, b2, and b3 respectively. Due to the presence of the second baffle 152 and the third baffle 153, the fluid along paths b2 and b3 cannot flow through the second gap 142 and the third gap 143, but can only converge at path b1 through the second channel 131 and flow out from outlet 11311.

[0111] refer to Figure 3 In this embodiment, along the height direction, the first heat exchanger core unit 120 has a first upper surface 124, and the second heat exchanger core unit 130 has a second upper surface 134; the first upper surface 124 and the second upper surface 134 are flush; the plane containing the first baffle 151, the second baffle 152, the third baffle 153, the fourth baffle 154, the fifth baffle 155, the sixth baffle 156, and the seventh baffle 157 is coplanar with the first upper surface 124 and the second upper surface 134.

[0112] By placing all baffles on the upper part of the first heat exchanger core unit 120 and the second heat exchanger core unit 130, and especially on the same plane as the upper surface, it ensures sufficient contact between the fluid to be heated and the interior of the first heat exchanger core unit 120 and the second heat exchanger core unit 130, and also guides the heated liquid or gas to move only upwards. If the baffles are placed in the middle or lower part of the first heat exchanger core unit 120 and the second heat exchanger core unit 130, the heated liquid or gas will be induced to escape again into the low-temperature gap between the first heat exchanger core unit 120 and the second heat exchanger core unit 130 and the shell 110, instead of flowing directly to the outlet 11311, thereby severely reducing the heat exchange efficiency.

[0113] refer to Figure 4 , Figure 5 In this embodiment, the first baffle 151, the second baffle 152, and the third baffle 153 are all along the width direction of the housing 110 ( Figure 4 The first baffle 151, the second baffle 152, and the third baffle 153 are all spliced ​​together with seven long strip-shaped plate structures.

[0114] In some possible implementations, the first baffle 151, the second baffle 152, and the third baffle 153 are divided into, but not limited to, seven parts; there may be two, three, ten, or more. The shapes of the first baffle 151, the second baffle 152, and the third baffle 153 are, but not limited to, elongated shapes; they may also be serrated, corrugated, or otherwise, as long as they can be spliced ​​together.

[0115] The large, monolithic baffle is designed as a modular structure, breaking down the original single hoisting, positioning, and fixing process into multiple, easier-to-operate modular installation steps. This reduces the requirements for large installation equipment and complex tooling, effectively solving the problems of inconvenience in operation and difficulty in ensuring positioning accuracy when installing large-area baffles within the narrow housing 110.

[0116] refer to Figure 4 , Figure 5 In this embodiment, along the width direction of the housing 110, the first heat exchanger core unit 120 has a first side surface 122 and a second side surface 123, and the second heat exchanger core unit 130 has a third side surface 132 and a fourth side surface 133. (See reference) Figure 6 , Figure 7 Along the width direction, a fourth gap 144 is formed between the first side 122 and the middle part 113, a fifth gap 145 is formed between the second side 123 and the middle part 113, a sixth gap 146 is formed between the third side 132 and the middle part 113, and a seventh gap 147 is formed between the fourth side 133 and the middle part 113.

[0117] refer to Figures 4 to 7 In this embodiment, the fourth baffle 154 extends along the length direction, is elongated, and is disposed between the first side 122 and the middle portion 113, blocking the fourth gap 144; the fifth baffle 155 extends along the length direction, is elongated, and is disposed between the second side 123 and the middle portion 113, blocking the fifth gap 145; the sixth baffle 156 extends along the length direction, is elongated, and is disposed between the third side 132 and the middle portion 113, blocking the sixth gap 146; the seventh baffle 157 extends along the length direction, is elongated, and is disposed between the fourth side 133 and the middle portion 113, blocking the seventh gap 147.

[0118] In some possible implementations, the shapes of the fourth baffle 154, the fifth baffle 155, the sixth baffle 156, and the seventh baffle 157 are not limited to elongated shapes, but can be trapezoidal, arc-shaped, etc., as long as they can block the corresponding gaps. The implementation of this application does not limit this.

[0119] refer to Figure 7The widths L1 of the first gap 141, L2 of the second gap 142, and L3 of the third gap 143 are all greater than the widths L4 of the fourth gap 144, L5 of the fifth gap 145, L6 of the sixth gap 146, and L7 of the seventh gap 147. The widths L1 of the first gap 141, L2 of the second gap 142, and L3 of the third gap 143 are all greater than 200mm, while the widths L4 of the fourth gap 144, L5 of the fifth gap 145, L6 of the sixth gap 146, and L7 of the seventh gap 147 are all less than or equal to 200mm.

[0120] By adding baffles in the transverse gaps (i.e., the fourth gap 144, the fifth gap 145, the sixth gap 146, and the seventh gap 147) between the two sides of the first heat exchanger core unit 120 and the second heat exchanger core unit 130 and the shell 110, the bypass channels of the transverse gaps are effectively blocked. This forces the liquid to be heated to be unable to flow through these lower-temperature side gaps, but instead to be fully guided into the higher-temperature internal channels of the heat exchanger core units (i.e., the first channel 121 and the second channel 131), thereby ensuring sufficient heat exchange between the liquid and the first heat exchanger core unit 120 and the second heat exchanger core unit 130, and improving the overall heat exchange efficiency of the reboiler 100.

[0121] refer to Figure 4 , Figure 5 , Figure 8 In this embodiment, the first heat exchanger core unit 120 includes two first plate-fin heat exchangers 125. Each first plate-fin heat exchanger 125 has multiple first fins 1251. The first fins 1251 extend along the height direction and are spaced apart along the width direction of the shell 110 to form multiple first channels 121. The structure of the first heat exchanger core unit 120 is consistent with that of the second heat exchanger core unit 130. Figure 8 The structures shown in the diagram are the same and will not be shown individually here. The second heat exchanger core unit 130 includes two second plate-fin heat exchangers 135. Each second plate-fin heat exchanger 135 is provided with multiple second fins 1351. The second fins 1351 extend along the height direction and are spaced apart along the width direction of the shell 110 to form multiple second channels 131.

[0122] In some possible implementations, the number of first plate-fin heat exchangers 125 includes, but is not limited to, two, and may be one, three, four, etc. The number of second plate-fin heat exchangers 135 includes, but is not limited to, two, and may be one, three, four, etc.

[0123] refer to Figure 4 , Figure 5 , Figure 8 In this embodiment, both the first plate-fin heat exchanger 125 and the second plate-fin heat exchanger 135 are aluminum plate-fin heat exchangers. The aluminum plate-fin heat exchanger has an internal closed channel through which a heating medium flows as a heat source. At the end of the aluminum plate-fin heat exchanger near the shell 110, there is a closed channel opening and a closed channel outlet. The high-temperature medium flows in through the closed channel opening, and after passing through the closed channel, it transfers heat through the wall to the fins and the fluid flowing through the fins. Subsequently, the cooled medium flows out through the closed channel outlet, forming a continuous heat cycle, thereby efficiently completing heat exchange.

[0124] By specifically defining the first heat exchanger core unit 120 and the second heat exchanger core unit 130 as plate-fin heat exchangers and specifying that their fins are spaced apart along the width direction, multiple internal heating channels are formed, namely the first channel 121 and the second channel 131. The fluid flows through the fins along the first channel 121 and the second channel 131, which not only greatly expands the effective heat transfer area, but also significantly reduces the flow resistance and promotes gas-liquid separation and discharge by cooperating with the flow channels along the height direction with gravity and the rising path of bubbles.

[0125] This application provides a reboiler 100, which further includes: a first support plate 161, a second support plate 162, a third support plate 163, a fourth support plate 164, a fifth support plate 165, a sixth support plate 166, a seventh support plate 167, and an eighth support plate 168, and respectively provided with a first reinforcing rib 181, a second reinforcing rib 182, a third reinforcing rib 183, a fourth reinforcing rib 184, a fifth reinforcing rib 185, a sixth reinforcing rib 186, a seventh reinforcing rib 187, and an eighth reinforcing rib 188.

[0126] refer to Figure 9 , Figure 10 and combined Figure 3 , Figure 4 In this embodiment, the first support plate 161 extends along the width direction and is elongated, located between the first heat exchanger core unit 120 and the first side plate 111, and is fixedly connected to the first heat exchanger core unit 120; along the width direction, a plurality of positioning pins 171 are spaced apart, and the plurality of positioning pins 171 respectively penetrate the first support plate 161 and the first baffle 151, and the first support plate 161 and the first baffle 151 are fixedly connected by positioning pins 171.

[0127] refer to Figure 9 , Figure 10 and combined Figure 3 , Figure 4 In this embodiment, along the height direction, the first reinforcing rib 181 is located below the first support plate 161 and is fixedly connected to the first support plate 161 and the first heat exchanger core unit 120 respectively.

[0128] refer to Figure 9 , Figure 11 and combined Figure 3 , Figure 4 In this embodiment, the second support plate 162 extends along the width direction and is elongated, located between the first heat exchanger core unit 120 and the second heat exchanger core unit 130, and is fixedly connected to the first heat exchanger core unit 120. Along the width direction, a plurality of positioning pins 171 are spaced apart, and the plurality of positioning pins 171 respectively penetrate the second support plate 162 and the second baffle 152, and the second support plate 162 and the second baffle 152 are fixedly connected by the positioning pins 171.

[0129] refer to Figure 9 , Figure 11 and combined Figure 3 , Figure 4 In this embodiment, along the height direction, the second reinforcing rib 182 is located below the second support plate 162 and is fixedly connected to the second support plate 162 and the first heat exchanger core unit 120, respectively.

[0130] refer to Figure 9 , Figure 12 and combined Figure 3 , Figure 4 In this embodiment, the third support plate 163 extends along the width direction and is elongated, located between the first heat exchanger core unit 120 and the second heat exchanger core unit 130, and is fixedly connected to the second heat exchanger core unit 130. Along the width direction, a plurality of positioning pins 171 are spaced apart, and the plurality of positioning pins 171 respectively penetrate the third support plate 163 and the second baffle 152, and the third support plate 163 and the second baffle 152 are fixedly connected by the positioning pins 171.

[0131] refer to Figure 9 , Figure 12 and combined Figure 3 , Figure 4 In this embodiment, along the height direction, the third reinforcing rib 183 is located below the third support plate 163 and is fixedly connected to the third support plate 163 and the second heat exchanger core unit 130, respectively.

[0132] refer to Figure 9 , Figure 13 and combined Figure 3 , Figure 4In this embodiment, the fourth support plate 164 extends along the width direction and is elongated, located between the second heat exchanger core unit 130 and the second side plate 112, and is fixedly connected to the second heat exchanger core unit 130. Along the width direction, a plurality of positioning pins 171 are spaced apart, and the plurality of positioning pins 171 respectively penetrate the fourth support plate 164 and the third baffle 153, and the fourth support plate 164 and the third baffle 153 are fixedly connected by the positioning pins 171.

[0133] refer to Figure 9 , Figure 13 and combined Figure 3 , Figure 4 In this embodiment, along the height direction, the fourth reinforcing rib 184 is located below the fourth support plate 164 and is fixedly connected to the fourth support plate 164 and the second heat exchanger core unit 130, respectively.

[0134] In some possible implementations, the shapes of the first support plate 161, the second support plate 162, the third support plate 163, and the fourth support plate 164 include, but are not limited to, elongated shapes, and can be arc-shaped, trapezoidal, I-shaped, etc. The embodiments of this application do not limit this.

[0135] In this embodiment, the first support plate 161, the second support plate 162, and the first heat exchanger core unit 120 are connected by welding, and the third support plate 163, the fourth support plate 164, and the second heat exchanger core unit 130 are connected by welding. In some possible embodiments, the connection method between the first support plate 161, the second support plate 162, and the first heat exchanger core unit 120 includes, but is not limited to, welding, and the connection method between the third support plate 163, the fourth support plate 164, and the second heat exchanger core unit 130 includes, but is not limited to, welding; it can also be by bonding or other methods, and this application does not limit this aspect.

[0136] The first support plate 161 and the second support plate 162 are made of the same material as the first heat exchanger core unit 120, and the third support plate 163 and the fourth support plate 164 are made of the same material as the second heat exchanger core unit 130. In this embodiment, they are all made of aluminum alloy.

[0137] In some possible implementations, the fixed connection between the first support plate 161 and the first baffle 151, the second support plate 162 and the second baffle 152, the third support plate 163 and the second baffle 152, and the fourth support plate 164 and the third baffle 153 is not limited to a pin connection, but can also be a screw, bolt, rivet, etc.

[0138] Support plates are installed on the first heat exchanger core unit 120 and the second heat exchanger core unit 130, and are detachably connected to the baffles via connectors. This improves the versatility of the structure and the flexibility of material selection, effectively solving the problem of direct connection between the first heat exchanger core unit 120, the second heat exchanger core unit 130, and the baffles due to different materials. For example, if the first heat exchanger core unit 120 and the second heat exchanger core unit 130 are made of aluminum and the baffles are made of carbon steel, direct welding would be difficult. Furthermore, the pin connection facilitates equipment assembly, daily maintenance, and component replacement, ensuring long-term stable operation.

[0139] In some possible implementations, the first reinforcing rib 181, the second reinforcing rib 182, the third reinforcing rib 183, and the fourth reinforcing rib 184 are made of the same material as the first heat exchanger core unit 120 and the second heat exchanger core unit 130.

[0140] In this embodiment, the first reinforcing rib 181 is fixedly connected to the first support plate 161 and the first heat exchanger core unit 120 by welding. The second reinforcing rib 182 is fixedly connected to the second support plate 162 and the first heat exchanger core unit 120 by welding. The third reinforcing rib 183 is fixedly connected to the third support plate 163 and the second heat exchanger core unit 130 by welding. The fourth reinforcing rib 184 is fixedly connected to the fourth support plate 164 and the second heat exchanger core unit 130 by welding. In some possible embodiments, the above-mentioned fixed connection methods include, but are not limited to, welding, and may also include, adhesive bonding, etc.

[0141] By setting reinforcing ribs and placing them below the corresponding support plates and fixing them to the support plates and heat exchanger core units, the ability of the support plates to resist fluid impact and vibration is significantly enhanced, preventing them from deforming and failing.

[0142] This application provides a reboiler 100, which also includes: a plurality of first support blocks 191 and a plurality of second support blocks 192.

[0143] refer to Figure 9 , Figure 14 and combined Figure 3 , Figure 4In this embodiment, a plurality of first support blocks 191 extend along the length direction and are located between the first side plate 111 and the first heat exchanger core unit 120, and are fixedly connected to the first side plate 111; a plurality of first screws 172 pass through the first support blocks 191 and the first baffle 151 respectively, and the first support blocks 191 and the first baffle 151 are fixedly connected by the first screws 172. Along the length direction, one end of the first support block 191 near the first side plate 111 is arc-shaped to facilitate fixed connection with the first side plate 111, and the other end is flat.

[0144] refer to Figure 9 , Figure 15 and combined Figure 3 , Figure 4 In this embodiment, multiple second support blocks 192 extend along the length direction and are located between the second side plate 112 and the second heat exchanger core unit 130, and are fixedly connected to the second side plate 112; multiple first screws 172 pass through the second support blocks 192 and the third baffle 153 respectively, and the second support blocks 192 and the third baffle 153 are both fixedly connected by the first screws 172. Along the length direction, one end of the second support block 192 near the second side plate 112 is arc-shaped to facilitate fixed connection with the second side plate 112, and the other end is flat.

[0145] Support blocks are provided on the two side plates (i.e., the first side plate 111 and the second side plate 112) of the housing 110, and the support blocks are fixedly connected to the baffles with screws for easy installation and disassembly. This also solves the problem of curved surface connections. Specifically, since the first side plate 111 and the second side plate 112 are mostly arc-shaped, directly welding the baffles with larger side areas to the curved surface is not only difficult to position, but also prone to welding deformation or failure due to thermal stress concentration. The support blocks, with their smaller side areas compared to the baffles, are easier to weld to the curved housing 110, and the baffles are then fixed with connectors, thus perfectly avoiding the process risks of direct welding of the baffles while ensuring structural strength.

[0146] refer to Figure 9 , Figure 14 , Figure 15 In this embodiment, the first support block 191 and the second support block 192 are made of carbon steel. In some possible embodiments, the material of the first support block 191 and the second support block 192 may include, but is not limited to, carbon steel, and may be stainless steel, aluminum alloy, titanium alloy or copper alloy, etc., as long as it is the same as the material of the shell 110. This application does not limit this.

[0147] Combination Figure 9In this embodiment, the reboiler 100 is a device with a symmetrical structure along its length and width. The fourth baffle 154 and the fifth baffle 155 are the same, as are the sixth baffle 156 and the seventh baffle 157. Correspondingly, the fifth support plate 165 and the sixth support plate 166 are the same, as are the seventh support plate 167 and the eighth support plate 168. Therefore, only two sets of connection methods are illustrated in the accompanying drawings of this application. The other two sets of connection methods correspond to each other and are not shown redundantly in the drawings. Specifically, the connection methods of the fifth support plate 165, the sixth support plate 166, the seventh support plate 167, and the eighth support plate 168 with the baffles and the intermediate part 113 are all the same.

[0148] In some possible implementations, the reboiler 100 may not be a symmetrical structure, but the connection methods of the fifth support plate 165, the sixth support plate 166, the seventh support plate 167, the eighth support plate 168 with the baffle and the intermediate part 113 are all the same.

[0149] refer to Figure 9 , Figure 16 , Figure 17 and combined Figure 6 In this embodiment, the fifth support plate 165 and the sixth support plate 166 have the same structure and connection method, and are only referred to as such here. Figure 17 The enlarged view illustrates the connection method of the sixth support plate 166, with the fifth support plate 165 corresponding to it. The fifth support plate 165 extends along its length, located between the first side 122 and the middle portion 113, and is fixedly connected to the middle portion 113. Second screws 173 pass through both the fifth support plate 165 and the fourth baffle 154. The sixth support plate 166 extends along its length, located between the second side 123 and the middle portion 113, and is fixedly connected to the middle portion 113. Second screws 173 pass through both the sixth support plate 166 and the fifth baffle 155. The fifth support plate 165 and the fourth baffle 154, and the sixth support plate 166 and the fifth baffle 155, are fixedly connected by second screws 173.

[0150] refer to Figure 9 , Figure 16 , Figure 17 and combined Figure 4 , Figure 6 In this embodiment, the fifth reinforcing rib 185 and the sixth reinforcing rib 186 have the same structure and the same connection method, and are only used here. Figure 17 Enlarged view illustration. The fifth reinforcing rib 185, along the height direction, is located above the fifth support plate 165 and is fixedly connected to both the fifth support plate 165 and the middle part 113. The sixth reinforcing rib 186, along the height direction, is located above the sixth support plate 166 and is fixedly connected to both the sixth support plate 166 and the middle part 113.

[0151] refer to Figure 9 , Figure 18 , Figure 19 and combined Figure 6 In this embodiment, the seventh support plate 167 and the eighth support plate 168 have the same structure and connection method, and are only referred to as such here. Figure 19 The enlarged view illustrates the connection method of the eighth support plate 168, with the corresponding seventh support plate 167. The seventh support plate 167 extends along its length and is located between the third side 132 and the middle portion 113, and is fixedly connected to the middle portion 113. Second screws 173 pass through both the seventh support plate 167 and the sixth baffle 156. The eighth support plate 168 extends along its length and is located between the fourth side 133 and the middle portion 113, and is fixedly connected to the middle portion 113. Second screws 173 pass through both the eighth support plate 168 and the seventh baffle 157. The seventh support plate 167 and the sixth baffle 156, and the eighth support plate 168 and the seventh baffle 157 are both fixedly connected by second screws 173.

[0152] refer to Figure 9 , Figure 18 , Figure 19 and combined Figure 5 , Figure 6 In this embodiment, the seventh reinforcing rib 187 and the eighth reinforcing rib 188 have the same structure and the same connection method, and are only used here. Figure 19 Enlarged view illustration. The seventh reinforcing rib 187 is located above the seventh support plate 167 along the height direction and is fixedly connected to the seventh support plate 167 and the middle part 113. The eighth reinforcing rib 188 is located above the eighth support plate 168 along the height direction and is fixedly connected to the eighth support plate 168 and the middle part 113.

[0153] In this embodiment, the fifth support plate 165, the sixth support plate 166, the seventh support plate 167, and the eighth support plate 168 are elongated strips. In some possible embodiments, the shapes of the fifth support plate 165, the sixth support plate 166, the seventh support plate 167, and the eighth support plate 168 are, but are not limited to, elongated strips, and can be arc-shaped, trapezoidal, I-shaped, etc. The material of the fifth support plate 165, the sixth support plate 166, the seventh support plate 167, and the eighth support plate 168 is the same as that of the shell 110, which is carbon steel in this embodiment, and is fixedly connected to the shell 110 by welding. In some possible embodiments, the fixed connection method can also be adhesive bonding, etc.

[0154] refer to Figure 17 , Figure 19 In this embodiment, the fifth reinforcing rib 185, the sixth reinforcing rib 186, the seventh reinforcing rib 187, and the eighth reinforcing rib 188 are connected to the corresponding support plate and the shell 110 by welding. In some possible embodiments, the connection method may also be bonding, etc.

[0155] refer to Figure 17 , Figure 19 In this embodiment, the first baffle 151 is located above the first support plate 161, the second baffle 152 is located above the second support plate 162 and the third support plate 163, and the third baffle 153 is located above the fourth support plate 164. Compared to a baffle located below the support plate, the top-supported structure places the support plate primarily under pressure, resulting in superior mechanical properties and more stable support for the baffle's own weight and the fluid load it bears.

[0156] refer to Figure 17 , Figure 19 In some possible implementations, the shapes of the first reinforcing rib 181, the second reinforcing rib 182, the third reinforcing rib 183, the fourth reinforcing rib 184, the fifth reinforcing rib 185, the sixth reinforcing rib 186, the seventh reinforcing rib 187, and the eighth reinforcing rib 188 can be triangular, rectangular, fan-shaped, I-shaped, etc., as long as they can play a supporting and reinforcing role. This application does not limit them in this regard.

[0157] In this embodiment, the fifth reinforcing rib 185 is fixedly connected to the middle portion 113 and the fifth support plate 165 by welding. The sixth reinforcing rib 186 is fixedly connected to the middle portion 113 and the sixth support plate 166 by welding. The seventh reinforcing rib 187 is fixedly connected to the middle portion 113 and the seventh support plate 167 by welding. The eighth reinforcing rib 188 is fixedly connected to the middle portion 113 and the eighth support plate 168 by welding. In some possible embodiments, the above-mentioned fixed connection methods include, but are not limited to, welding, and may include bonding.

[0158] Compared to the gaps between the side plates of the housing 110 and the first heat exchanger core unit 120 and the second heat exchanger core unit 130, the gaps between the housing 110 and the sides of the first heat exchanger core unit 120 and the second heat exchanger core unit 130 are smaller, resulting in relatively weaker fluid impact. Therefore, a stable support can be formed simply by installing a support plate on the housing 110 and connecting it to the baffle. This eliminates the complexity of directly connecting the housing 110 to the first heat exchanger core unit 120 and the second heat exchanger core unit 130, while also ensuring that the baffle has sufficient resistance to deformation under low fluid loads, achieving a balance between cost and reliability.

[0159] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A reboiler, characterized in that, include: The housing has a first side plate, a second side plate, and a middle section along its length, the middle section being located between the first side plate and the second side plate; along its height, the middle section has an upper plate and a lower plate; the upper plate has an outlet that penetrates the upper plate along its height; the lower plate has an inlet that penetrates the lower plate along its height; the first side plate, the second side plate, and the middle section together form a cavity; A first heat exchanger core unit is disposed in the cavity and has a first channel along the height direction, the first channel penetrating the first heat exchanger core unit along the height direction; Along the length direction, a first gap is formed between the first heat exchanger core unit and the first side plate; The second heat exchanger core unit is disposed in the cavity and has a second channel along the height direction, the second channel penetrating the second heat exchanger core unit along the height direction; it is spaced apart from the first heat exchanger core unit along the length direction, a second gap is formed between the first heat exchanger core unit and the second heat exchanger core unit, and a third gap is formed between the second heat exchanger core unit and the second side plate; A first baffle extends along the length direction and is disposed between the first heat exchanger core unit and the first side plate, thereby blocking the first gap. The second baffle extends along the length direction and is disposed between the first heat exchanger core unit and the second heat exchanger core unit, and blocks the second gap; A third baffle extends along the length direction and is disposed between the second heat exchanger core unit and the second side plate, thereby blocking the third gap. The inlet allows external fluid to flow in, and the fluid can flow through the first channel and the second channel. The outlet allows the fluid to flow out.

2. The reboiler as described in claim 1, characterized in that, Along the width direction of the housing, the first heat exchanger core unit has a first side and a second side, and the second heat exchanger core unit has a third side and a fourth side. Along the width direction, a fourth gap is formed between the first side and the middle portion, a fifth gap is formed between the second side and the middle portion, a sixth gap is formed between the third side and the middle portion, and a seventh gap is formed between the fourth side and the middle portion; Also includes: A fourth baffle extends along the length direction, is disposed between the first side and the middle part, and blocks the fourth gap; A fifth baffle extends along the length direction, is disposed between the second side and the middle part, and blocks the fifth gap; A sixth baffle extends along the length direction, is disposed between the third side and the middle part, and blocks the sixth gap; A seventh baffle extends along the length direction, is disposed between the fourth side and the middle portion, and blocks the seventh gap.

3. The reboiler as described in claim 2, characterized in that, Along the height direction, the first heat exchanger core unit has a first upper surface, and the second heat exchanger core unit has a second upper surface; the first upper surface and the second upper surface are flush. The plane containing the first baffle, second baffle, third baffle, fourth baffle, fifth baffle, sixth baffle, and seventh baffle is coplanar with the first upper surface and the second upper surface.

4. The reboiler as described in claim 1, characterized in that, Also includes: A first support plate extends along the width direction of the housing and is located between the first heat exchanger core unit and the first side plate, and is fixedly connected to the first heat exchanger core unit. The second support plate extends along the width direction and is located between the first heat exchanger core unit and the second heat exchanger core unit, and is fixedly connected to the first heat exchanger core unit. The third support plate extends along the width direction and is located between the first heat exchanger core unit and the second heat exchanger core unit, and is fixedly connected to the second heat exchanger core unit. The fourth support plate extends along the width direction and is located between the second heat exchanger core unit and the second side plate, and is fixedly connected to the second heat exchanger core unit; Multiple positioning pins pass through the first support plate and the first baffle, the second support plate and the second baffle, the third support plate and the second baffle, and the fourth support plate and the third baffle, respectively; The first support plate and the first baffle, the second support plate and the second baffle, the third support plate and the second baffle, and the fourth support plate and the third baffle are all fixedly connected by the positioning pin.

5. The reboiler as described in claim 4, characterized in that, Also includes: The first reinforcing rib, along the height direction, is located below the first support plate and is fixedly connected to the first support plate and the first heat exchanger core unit, respectively. The second reinforcing rib is located below the second support plate along the height direction and is fixedly connected to the second support plate and the first heat exchanger core unit, respectively. The third reinforcing rib, along the height direction, is located below the third support plate and is fixedly connected to the third support plate and the second heat exchanger core unit, respectively. The fourth reinforcing rib is located below the fourth support plate along the height direction and is fixedly connected to the fourth support plate and the second heat exchanger core unit, respectively.

6. The reboiler as claimed in claim 1, characterized in that, Also includes: Multiple first support blocks extend along the length direction and are located between the first side plate and the first heat exchanger core unit, and are fixedly connected to the first side plate. Multiple second support blocks extend along the length direction and are located between the second side plate and the second heat exchanger core unit, and are fixedly connected to the second side plate; Multiple first screws respectively penetrate the first support block and the first baffle, and the second support block and the third baffle; The first support block and the first baffle, and the second support block and the third baffle are all fixedly connected by the first screw.

7. The reboiler as described in claim 2, characterized in that, Also includes: Multiple second screws; The fifth support plate extends along the length direction and is located between the first side and the middle part, and is fixedly connected to the middle part. The second screw passes through the fifth support plate and the fourth baffle respectively. The sixth support plate extends along the length direction and is located between the second side and the middle part, and is fixedly connected to the middle part. The second screw passes through the sixth support plate and the fifth baffle respectively. The seventh support plate extends along the length direction and is located between the third side and the middle part, and is fixedly connected to the middle part. The second screw passes through the seventh support plate and the sixth baffle respectively. The eighth support plate extends along the length direction and is located between the fourth side and the middle part, and is fixedly connected to the middle part. The second screw passes through the eighth support plate and the seventh baffle respectively. The fifth support plate and the fourth baffle, the sixth support plate and the fifth baffle, the seventh support plate and the sixth baffle, and the eighth support plate and the seventh baffle are all fixedly connected by the second screw.

8. The reboiler as described in claim 7, characterized in that, Also includes: The fifth reinforcing rib, along the height direction, is located above the fifth support plate and is fixedly connected to the fifth support plate and the middle part, respectively. The sixth reinforcing rib, along the height direction, is located above the sixth support plate and is fixedly connected to the sixth support plate and the middle part, respectively. The seventh reinforcing rib, along the height direction, is located above the seventh support plate and is fixedly connected to the seventh support plate and the middle part, respectively. The eighth reinforcing rib is located above the eighth support plate along the height direction and is fixedly connected to the eighth support plate and the middle part, respectively.

9. The reboiler as claimed in claim 1, characterized in that, The first heat exchanger core unit includes one or more first plate-fin heat exchangers. Each first plate-fin heat exchanger is provided with a plurality of first fins. The first fins extend along the height direction and are spaced apart along the width direction of the shell to form a plurality of first channels. The second heat exchanger core unit includes one or more second plate-fin heat exchangers. Each second plate-fin heat exchanger is provided with a plurality of second fins. The second fins extend along the height direction and are spaced apart along the width direction of the shell to form a plurality of second channels.

10. The reboiler as claimed in claim 1, characterized in that, The first baffle, the second baffle, and the third baffle are all spliced ​​together along the width direction of the shell.

Images