An evenly distributed plate-fin heat exchanger guide structure

Abstract

The utility model relates to the technical field of fin uniform distribution's heat exchanger, disclose a kind of uniform distribution's plate-fin heat exchanger flow guide structure, including fixing frame, fixed plate, fin and adjusting mechanism, adjusting mechanism is by connecting rod, sliding shaft and sliding frame and the like component constitute, by driving connecting rod and the sliding shaft rotationally connected with fin movement, the rotation angle of multiple fins can be changed, realize the active adjustment of fluid distribution;Structure further include filtering mechanism, filtering mechanism is by filter plate, sliding block, sliding rod and support spring and the like component constitute, by pulling sliding column and sliding rod are separated from filter plate, the quick disassembly and replacement of filter plate can be realized.The utility model is by setting the adjusting mechanism of active adjustment and the filtering mechanism of convenient maintenance, solve the problem that existing flow guide structure is fixed, cannot adapt to working condition change and is easily blocked by impurity, improve heat exchange efficiency and guarantee equipment long-term stable operation.

Description

Technical Field

[0001] This utility model relates to the technical field of heat exchangers with uniformly distributed fins, and more particularly to a uniformly distributed plate-fin heat exchanger flow guiding structure. Background Technology

[0002] Plate-fin heat exchangers are widely used in chemical, energy, and aerospace industries due to their compact structure and high heat exchange efficiency. At the inlet header of a plate-fin heat exchanger, a flow guiding structure is typically installed. Its main function is to evenly distribute the incoming fluid into the hundreds or thousands of parallel heat exchange channels in the core heat exchange section. This is a crucial prerequisite for ensuring the efficient operation of the entire heat exchanger.

[0003] Currently, conventional flow guiding structures typically employ fixed guide vanes or specific geometric configurations. In this design, the structure is fixed during manufacturing, and its flow guiding performance is optimized for a specific, ideal design condition (such as rated flow rate, temperature, and pressure). Under this ideal condition, it can indeed achieve a relatively uniform fluid distribution.

[0004] However, in actual industrial applications, the operating environment of heat exchangers is not static. Fluctuations in upstream processes and adjustments in system load can cause the actual operating parameters of the heat exchanger (such as fluid flow rate and temperature) to deviate significantly from the initial design conditions.

[0005] When actual operating conditions deviate from the design conditions, the original fixed flow guiding structure can no longer guarantee uniform fluid distribution. This leads to excessively high flow velocities in some heat exchange channels, resulting in insufficient heat exchange, while the flow velocities in other channels are too low, even forming dead zones. This easily causes impurity deposition and blockage, significantly reducing the overall heat exchange efficiency of the heat exchanger and failing to meet actual production needs. The fundamental deficiency of existing technologies lies in their passive and static flow guiding structures, lacking the ability to actively adjust according to changes in actual operating conditions. Therefore, this invention proposes a uniformly distributed plate-fin heat exchanger flow guiding structure to address the shortcomings of existing technologies. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a uniformly distributed flow guiding structure for a plate-fin heat exchanger, aiming to improve the problem that some existing plate-fin heat exchanger flow guiding structures have fixed flow guiding structures and cannot actively adjust the fluid distribution according to changes in actual operating conditions.

[0007] This utility model provides a uniformly distributed flow guiding structure for a plate-fin heat exchanger, including a fixed frame, a fixed plate, a baffle, fins, a fluid inlet and a fluid outlet; and an adjustment mechanism.

[0008] The adjustment mechanism achieves fin angle adjustment through a series of linked components. Specifically, the adjustment mechanism includes a sliding shaft, a connecting rod, a limiting shaft, a sliding frame, and a connecting shaft. The sliding shaft is rotatably connected to the fin and serves as the final actuating component. The connecting rod, as the operating component, is slidably disposed inside the fixed plate and is fixedly connected to the sliding shaft and the limiting shaft. The sliding frame is slidably disposed inside the connecting rod, while both ends of the connecting shaft are fixed to the connecting rod and slide through the sliding frame, together forming a linkage structure for stable adjustment action.

[0009] Preferably, the adjustment mechanism further includes a reset assembly, which includes a support shaft, a sliding plate, and a reset spring. The reset spring is sleeved on the support shaft, and its two ends abut against the sliding plate and the sliding frame, respectively.

[0010] Preferably, the fixing plate has a limiting hole for cooperating with the support shaft, and the movement range of the connecting rod is limited by the cooperation between the support shaft and the limiting hole.

[0011] Preferably, the uniformly distributed plate-fin heat exchanger flow guiding structure further includes a filtration mechanism, which is mounted on a fixed frame and located in the fluid passage between the fluid inlet and the fins. The filtration mechanism includes a filter plate.

[0012] Preferably, the filtering mechanism further includes a sliding block and a sliding column. The sliding block is slidably disposed inside the rear end of the fixed frame, and the sliding column is fixedly connected to the sliding block for driving the sliding block to slide.

[0013] Preferably, the filtering mechanism further includes a limiting rod and a sliding rod, the limiting rod connecting the sliding block and the sliding rod, and is used to transmit the movement of the sliding block to the sliding rod.

[0014] Preferably, the free end of the sliding rod is used to be pluggably embedded inside the filter plate to achieve locking and releasing of the filter plate.

[0015] Preferably, the filtering mechanism further includes a support spring, with both ends of the support spring abutting between the fixed frame and the sliding block, for pushing the sliding block to reset when the sliding column is released.

[0016] This utility model has the following beneficial effects: 1. This utility model solves the problem in the prior art that the flow guiding structure is fixed and the fluid distribution state cannot be adjusted according to the actual working conditions by setting an adjustment mechanism that is linked by a connecting rod, a sliding shaft and fins. It achieves the technical effect of being able to actively and flexibly optimize fluid distribution, thereby improving the overall heat exchange efficiency of the heat exchanger.

[0017] 2. This utility model, by setting up a filter mechanism consisting of a sliding rod, a sliding block and a supporting spring, enables quick disassembly and replacement of the filter plate, solving the problems in the prior art where fluid impurities easily clog the fin channels, affecting the long-term stable operation of the system, and making filter cleaning and maintenance inconvenient. It achieves the technical effects of ensuring fluid cleanliness, avoiding clogging and greatly improving the maintainability of the equipment.

[0018] 3. This utility model solves the problem of damage to the adjustment device due to excessive operation or unstable adjustment action in the prior art by setting a reset component and a limit hole in the adjustment mechanism, and achieves the technical effect of limiting the adjustment stroke, preventing misoperation and ensuring stable and reliable adjustment action. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a uniformly distributed plate-fin heat exchanger flow guiding structure proposed in this utility model. Figure 2 This is a schematic diagram of the connecting shaft of a uniformly distributed plate-fin heat exchanger flow guiding structure proposed in this utility model. Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the sliding block of a uniformly distributed plate-fin heat exchanger flow guiding structure proposed in this utility model. Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0020] Legend: 1. Fixture; 2. Baffle; 3. Fixing plate; 4. Adjustment mechanism; 41. Sliding shaft; 42. Connecting rod; 43. Limiting shaft; 44. Sliding frame; 45. Connecting shaft; 46. ​​Reset assembly; 461. Support shaft; 462. Reset spring; 463. Sliding plate; 47. Fins; 48. Limiting holes; 5. Filtering mechanism; 51. Filter plate; 52. Sliding column; 53. Sliding block; 54. Limiting rod; 55. Sliding rod; 56. Support spring; 6. Fluid inlet; 7. Fluid outlet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Reference Figures 1 to 5 This utility model provides a uniformly distributed flow guiding structure for a plate-fin heat exchanger, which aims to solve the problems in the prior art where the flow guiding structure of the plate-fin heat exchanger cannot actively adjust the fluid distribution, resulting in uneven distribution, and fluid impurities easily block the channels of the fins 47, leading to unstable operation.

[0023] like Figure 1 As shown, the heat exchanger includes a fixed frame 1, which provides a supporting foundation for the entire flow guiding structure; a fixed plate 3 and a baffle 2 are installed on the fixed frame 1, and the fixed plate 3 and the baffle 2 together form the fluid channel of the heat exchanger; a fluid inlet 6 and a fluid outlet 7 are set at both ends of the fluid channel for the inflow and outflow of fluid; fins 47 are rotatably connected between the fixed plates 3 for guiding the incoming fluid; an adjustment mechanism 4 is provided to adjust the rotation angle of the fins 47; and a filter mechanism 5 is also provided to ensure the cleanliness of the incoming fluid. The filter mechanism 5 is installed on the fixed frame 1 and located in the fluid passage between the fluid inlet 6 and the fins 47.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, the adjustment mechanism 4 includes a sliding shaft 41, which is rotatably connected to the fin 47; the adjustment mechanism 4 also includes a connecting rod 42, which is slidably disposed inside the fixed plate 3 and is fixedly connected to the sliding shaft 41; the adjustment mechanism 4 also includes a limiting shaft 43, which is fixedly connected to the connecting rod 42; the adjustment mechanism 4 also includes a sliding frame 44, which is slidably disposed inside the connecting rod 42; the adjustment mechanism 4 also includes a connecting shaft 45, whose two ends are fixed to the connecting rod 42 and which slides through the sliding frame 44.

[0025] The adjustment mechanism 4 also includes a reset assembly 46, which includes a support shaft 461, which is fixedly installed; the reset assembly 46 also includes a sliding plate 463; the reset assembly 46 also includes a reset spring 462, which is sleeved on the support shaft 461, and the two ends of the reset spring 462 abut against the sliding plate 463 and the sliding frame 44 respectively; a limit hole 48 is opened on the fixed plate 3, and the support shaft 461 cooperates with the limit hole 48 to limit the movement range of the connecting rod 42.

[0026] Reference Figure 1 , Figure 4 and Figure 5 The filter mechanism 5 includes a filter plate 51, which is mounted on a fixed frame 1. The filter mechanism 5 also includes a sliding block 53 and a sliding column 52. The sliding block 53 is slidably disposed inside the rear end of the fixed frame 1, and the sliding column 52 is fixedly connected to the sliding block 53 for driving the sliding block 53 to slide. The filter mechanism 5 also includes a limiting rod 54 and a sliding rod 55. The limiting rod 54 connects the sliding block 53 and the sliding rod 55 for transmitting the movement of the sliding block 53 to the sliding rod 55. The free end of the sliding rod 55 is used to be pluggably embedded into the interior of the filter plate 51 to lock and release the filter plate 51. The filter mechanism 5 also includes a support spring 56, the two ends of which abut against the fixed frame 1 and the sliding block 53 respectively, for pushing the sliding block 53 to reset when the sliding column 52 is released.

[0027] Reference Figure 1 , Figure 2 and Figure 3 The adjustment mechanism 4 also includes a reset assembly 46, which includes a support shaft 461, a sliding plate 463 and a reset spring 462. The reset spring 462 is sleeved on the support shaft 461, and its two ends abut against the sliding plate 463 and the sliding frame 44, respectively.

[0028] Reference Figure 2 A limiting hole 48 is provided on the fixed plate 3, and the support shaft 461 is fixedly installed and cooperates with the limiting hole 48 to limit the movement range of the connecting rod 42.

[0029] Reference Figure 1 The uniformly distributed plate-fin heat exchanger flow guiding structure also includes a filter mechanism 5. The filter mechanism 5 is installed on the fixed frame 1 and located in the fluid passage between the fluid inlet 6 and the fins 47. The filter mechanism 5 includes a filter plate 51.

[0030] Reference Figure 4 and Figure 5 The filter mechanism 5 also includes a sliding block 53 and a sliding column 52. The sliding block 53 is slidably disposed inside the rear end of the fixed frame 1, and the sliding column 52 is fixedly connected to the sliding block 53 to drive the sliding block 53 to slide.

[0031] The filter mechanism 5 also includes a limiting rod 54 and a sliding rod 55. The limiting rod 54 connects the sliding block 53 and the sliding rod 55 and is used to transmit the movement of the sliding block 53 to the sliding rod 55. The free end of the sliding rod 55 is used to be pluggably embedded into the interior of the filter plate 51 to achieve locking and releasing of the filter plate 51.

[0032] The filter mechanism 5 also includes a support spring 56, with its two ends abutting between the fixed frame 1 and the sliding block 53, respectively, to push the sliding block 53 to reset when the sliding column 52 is released.

[0033] The implementation principle of this application embodiment is as follows: When it is necessary to adjust the distribution effect of fluid at the fin 47, by pushing the connecting rod 42, the connecting rod 42 is slidably disposed inside the fixed plate 3 and drives the sliding shaft 41 and the limiting shaft 43 fixedly connected to it to move together. Since the sliding shaft 41 is rotatably connected to the fin 47, the linear movement of the sliding shaft 41 will be converted into the rotation of multiple fins 47, thereby changing the guiding angle of the fluid. During the process of pushing the connecting rod 42, the connecting shaft 45 slides inside the sliding frame 44, and at the same time the support shaft 461 is pulled, causing the sliding plate 463 to squeeze the return spring 462 sleeved on it to deform, providing a return force for the adjustment action. Furthermore, the cooperation between the support shaft 461 and the limiting hole 48 limits the movement range of the connecting rod 42. Through the synergistic effect of the adjustment mechanism 4 and the fin 47, the active adjustment of the fluid distribution state is realized.

[0034] When fluid flows in from fluid inlet 6, it first flows through filter plate 51 in filter mechanism 5, where impurities are intercepted. When filter plate 51 needs to be cleaned or replaced, slide column 52 is pulled, which drives slide block 53 to slide inside the rear end of fixed frame 1 and presses against support spring 56 between fixed frame 1 and slide block 53. Slide block 53 drives slide rod 55 away from inside filter plate 51 through limit rod 54, releasing the lock on filter plate 51, which can then be removed. After replacing filter plate 51, slide column 52 is released, and support spring 56 releases its elastic force to push slide block 53 back to its original position, thereby driving slide rod 55 to re-embed inside filter plate 51 and fix it in place. Through the action of filter mechanism 5, the cleanliness of fluid entering subsequent adjustment mechanism 4 and fins 47 is ensured.

Claims

1. A uniformly distributed flow guiding structure for a plate-fin heat exchanger, comprising: Fixture (1); A fixing plate (3) and a baffle (2) are mounted on the fixing frame (1); Fins (47) are rotatably connected between the fixed plates (3); Fluid inlet (6) and fluid outlet (7); The invention is characterized by further including an adjustment mechanism (4), the adjustment mechanism (4) comprising: a sliding shaft (41), the sliding shaft (41) being rotatably connected to the fin (47); a connecting rod (42), the connecting rod (42) being slidably disposed inside the fixed plate (3), the connecting rod (42) being fixedly connected to the sliding shaft (41); a limiting shaft (43), the limiting shaft (43) being fixedly connected to the connecting rod (42); a sliding frame (44), the sliding frame (44) being slidably disposed inside the connecting rod (42); and a connecting shaft (45), the two ends of the connecting shaft (45) being fixed to the connecting rod (42), the connecting shaft (45) being slidably passed through the sliding frame (44).

2. The uniformly distributed plate-fin heat exchanger flow guiding structure according to claim 1, characterized in that, The adjustment mechanism (4) further includes a reset assembly (46), which includes a support shaft (461), a sliding plate (463), and a reset spring (462). The reset spring (462) is sleeved on the support shaft (461), and the two ends of the reset spring (462) abut against the sliding plate (463) and the sliding frame (44) respectively.

3. The uniformly distributed plate-fin heat exchanger flow guiding structure according to claim 2, characterized in that, The fixed plate (3) has a limiting hole (48) and the support shaft (461) is fixedly installed and cooperates with the limiting hole (48) to limit the movement range of the connecting rod (42).

4. The uniformly distributed plate-fin heat exchanger flow guiding structure according to claim 1, characterized in that, It also includes a filter mechanism (5), which is mounted on the frame (1) and located in the fluid passage between the fluid inlet (6) and the fins (47), and the filter mechanism (5) includes a filter plate (51).

5. The uniformly distributed plate-fin heat exchanger flow guiding structure according to claim 4, characterized in that, The filtering mechanism (5) further includes a sliding block (53) and a sliding column (52). The sliding block (53) is slidably disposed inside the rear end of the fixed frame (1). The sliding column (52) is fixedly connected to the sliding block (53) and is used to drive the sliding block (53) to slide.

6. The uniformly distributed plate-fin heat exchanger flow guiding structure according to claim 5, characterized in that, The filtering mechanism (5) further includes a limiting rod (54) and a sliding rod (55). The limiting rod (54) connects the sliding block (53) and the sliding rod (55) and is used to transmit the movement of the sliding block (53) to the sliding rod (55).

7. The uniformly distributed plate-fin heat exchanger flow guiding structure according to claim 6, characterized in that, The free end of the sliding rod (55) is used to be pluggably embedded into the interior of the filter plate (51) to lock and release the filter plate (51).

8. The uniformly distributed plate-fin heat exchanger flow guiding structure according to claim 5, characterized in that, The filter mechanism (5) also includes a support spring (56), the two ends of which abut against the fixed frame (1) and the sliding block (53) respectively, and are used to push the sliding block (53) to reset when the sliding column (52) is released.

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