Heat exchanger with adjustable heat exchange area
By combining the limiting and adjusting components, the heat exchange area can be flexibly adjusted and stabilized, solving the problem of poor adaptability of existing heat exchangers to operating loads and improving heat exchange efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING HUAAIXIN ENERGY - SAVING EQUIP CO LTD
- Filing Date
- 2026-03-11
- Publication Date
- 2026-07-21
AI Technical Summary
The heat exchange area of existing heat exchangers is fixed after manufacturing and cannot be adjusted in multiple gradients according to the operating load. This results in energy waste at low loads and insufficient heat exchange at high loads. Furthermore, the adjustment process is prone to media leakage and safety risks.
An adjustable heat exchanger with a heat exchange area including a limiting component and an adjusting component is designed. The adjusting component directly drives the moving parts of the heat exchanger to change the effective heat exchange area, and the limiting component provides a rigid locking force after adjustment to prevent parameter drift. At the same time, the heat exchange tube bundle can be selectively enabled or disabled to achieve flexible adjustment.
It achieves flexible adjustment and stability of heat exchange area, avoids equipment downtime for maintenance, improves heat exchange efficiency and safety, and adapts to different operating load requirements.
Smart Images
Figure CN121898189B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of heat exchanger technology, and more specifically, to a heat exchanger with adjustable heat exchange area. Background Technology
[0002] A heat exchanger is an energy-saving device that facilitates heat transfer between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, bringing the fluid temperature to the specified parameters to meet process requirements. It is also a key component in improving energy efficiency. The heat exchanger industry encompasses over 30 sectors, including HVAC, pressure vessels, wastewater treatment equipment, chemicals, and petroleum, forming interconnected industrial chains.
[0003] In existing technologies, the heat exchange area of heat exchangers is fixed after manufacturing. This fixed design prevents the equipment from being adjusted in a gradient or fine-grained manner according to operating conditions (such as flow rate and temperature fluctuations). The only way to change the heat exchange capacity is to replace the entire unit, leading to the contradiction of "energy waste at low loads and insufficient heat exchange at high loads," resulting in extremely poor adaptability. Furthermore, the heat exchange tube bundles can only be fully activated or completely deactivated, making it impossible to selectively activate only a portion of the bundles according to actual needs. At low loads, excess tubes cause ineffective heat exchange, while at high loads, insufficient tubes cannot meet the demand, requiring disassembly for adjustment. However, this process leads to prolonged downtime for maintenance, affecting the continuity of the entire manufacturing process. Although some simple structures have been attempted to adjust heat exchange parameters, the lack of a dedicated sealing design for the cavity and heat exchange tubes makes them prone to media leakage during adjustment. This reduces heat exchange efficiency and may pose safety risks due to fluid leakage, failing to simultaneously achieve "adjustment flexibility" and "sealing reliability," resulting in poor overall practical performance. Summary of the Invention
[0004] To overcome the above-mentioned defects, embodiments of the present invention provide a heat exchanger with adjustable heat exchange area, which solves the technical problem in the prior art that the heat exchange area of the heat exchanger is fixed after manufacturing, resulting in the inability of the equipment to be adjusted in multiple gradients according to the operating load, and the only way to change the heat exchange capacity is to replace the entire equipment.
[0005] According to one aspect, at least one embodiment of the present invention provides a heat exchanger with adjustable heat exchange area, comprising: The outer shell has a first fixing plate and a second fixing plate fixedly connected to it. The first fixing plate and the second fixing plate divide the interior of the outer shell into a water inlet chamber, a heat exchange chamber and a turning chamber in sequence. A heat exchange tube is provided in the outer shell. The heat exchange tube is fixedly connected to the second fixing plate. The side of the heat exchange tube passes through the first fixing plate. A first adjusting seat is provided on the side of the outer shell. The side of the first adjusting seat has multiple sets of slots in a ring shape. The first adjustment mechanism includes a limiting component and an adjustment component. The limiting component is installed on the side of the first adjustment seat, and the adjustment component is installed inside the heat exchange cavity. The first adjustment mechanism is used to adjust the heat exchange area. The second adjustment mechanism includes a fixed connecting plate fixedly connected to the inside of the water inlet chamber and a flipping component installed on the side of the fixed connecting plate. The flipping component is used to adjust the number of tube bundles.
[0006] For example, in at least one embodiment of the present invention, an adjustable heat exchanger is provided, which further includes: two mounting brackets fixedly connected to the bottom of the outer shell; an inlet and an outlet are respectively provided at the top and bottom of the outer shell corresponding to the position of the water inlet cavity; an add port and an outlet are respectively provided at the top and bottom of the outer shell corresponding to the position of the heat exchange cavity; and the add port and the outlet are respectively located on both sides of the centerline of the outer shell.
[0007] For example, in at least one embodiment of the present invention, an adjustable heat exchanger is provided, which further includes: the limiting component includes a rotating plate installed on the side of the outer shell, a handle is fixedly connected to the side of the rotating plate, the rotating plate and the handle are an integral structure, and a moving groove is provided in the rotating plate and the handle.
[0008] For example, in at least one embodiment of the present invention, an adjustable heat exchanger further includes: a slide rod is provided in the moving groove, a pull ring is fixedly connected to one end of the slide rod, and an insertion rod is fixedly connected to the other end of the slide rod, the side of the insertion rod passing through the rotating plate and being inserted into the slot.
[0009] For example, in at least one embodiment of the present invention, an adjustable heat exchanger is provided, which further includes: a spring is provided on the outer side of the slide rod, one end of the spring is fixedly connected to the inner wall of the moving groove, the other end of the spring is fixedly connected to the connecting part on the outer side of the slide rod, and a damping sleeve is provided inside the spring.
[0010] For example, in at least one embodiment of the present invention, an adjustable heat exchanger is provided, which further includes: the adjustment component includes a drive shaft fixedly connected to the side of the rotating plate, the drive shaft and the rotating plate being concentric and coaxial, and a bidirectional threaded rod fixedly connected to the side of the drive shaft, the center of the bidirectional threaded rod being rotatably connected to the inner wall of the outer shell through a fixing frame.
[0011] For example, in at least one embodiment of the present invention, an adjustable heat exchanger is provided, which further includes: two baffles are threadedly connected to the threaded portions on both sides of the bidirectional threaded rod, the outer sides of the two baffles are sealed and fitted to the inner wall of the heat exchange chamber, and a sealing sleeve is provided in the baffle at the position corresponding to the heat exchange tube, and the sealing sleeve is sealed and fitted to the outside of the heat exchange tube.
[0012] For example, in at least one embodiment of the present invention, an adjustable heat exchanger is provided, which further includes: the flipping assembly includes a second adjusting seat disposed on the side of the outer shell and two hinge plates hinged to the side of the fixed connecting plate. The outer sides of the two hinge plates are sealed and fitted to the inner wall of the outer shell. The two sides of the rotation shaft of the two hinge plates are rotatably connected to the outer shell and a drive gear is fixedly connected to the side near the second adjusting seat.
[0013] For example, in at least one embodiment of the present invention, an adjustable heat exchanger further includes: a rack disposed between the two drive gears, the rack moving within a groove of a second adjusting seat, the two sides of the rack being respectively meshed with the two drive gears, a moving block fixedly connected to the side of the rack, and a second slot provided on the side of the moving block.
[0014] For example, in at least one embodiment of the present invention, an adjustable heat exchanger further includes: two first slots are respectively opened on the side of the second adjustment seat, and a U-shaped plug is provided on the side of the second adjustment seat. One end of the U-shaped plug is inserted into one of the first slots, and the other end of the U-shaped plug is inserted into the second slot.
[0015] The beneficial effects of this invention are as follows: (1) In this invention, the combined use of the adjusting component and the limiting component not only achieves flexible adjustment of the heat exchange area, but also, through its inherent limiting and locking mechanism, limits the adjusting component after completing the predetermined stroke, thereby effectively preventing displacement after adjustment and ensuring extreme stability of the process temperature. The adjusting component is the action execution unit of this mechanism. Its core function is to directly drive or guide the moving parts of the heat exchanger, thereby changing the effective heat exchange area participating in heat exchange. The limiting component is used to immediately activate its core limiting function after the adjusting component completes the predetermined stroke, thereby effectively preventing displacement after adjustment. When subjected to stress fluctuations caused by fluid impact, vibration, or temperature changes inside the heat exchanger, the limiting component can provide rigid locking force for the adjusting component, ensuring that the adjusted heat exchange area parameters will not drift, thereby ensuring extreme stability of the process temperature. (2) In this invention, the number of heat exchange tubes can be adjusted by using a fixed connecting plate and a flipping assembly installed on the side of the fixed connecting plate. This design can change the total heat exchange area of the heat exchanger, thereby indirectly affecting the fluid velocity, pressure drop and arrangement, thus having a decisive impact on the thermal performance, fluid resistance, structural strength and cost of the heat exchanger. In use, the rack can be moved by the moving block. During the movement of the rack, the gears on the upper and lower sides drive the two drive gears to rotate through meshing transmission, thereby driving the hinge plate to rotate. This design converts the linear motion of the rack into the curvilinear motion of the two drive gears, thereby enabling the two hinge plates to deflect and thus shield the heat exchange tubes. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.
[0017] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a side view of the external structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the limiting component of the present invention; Figure 5 This is a schematic diagram of the operation of the first adjustment structure of the present invention; Figure 6 This is a schematic diagram of the second adjustment structure of the present invention.
[0018] In the diagram: 1. Outer shell; 2. Inlet; 3. Outlet; 4. Adding port; 5. Discharge port; 6. First adjusting seat; 7. Adjusting component; 8. Limiting component; 9. Slot; 10. Flipping component; 11. First fixing plate; 12. Second fixing plate; 13. Heat exchange tube; 14. Fixing frame; 15. Fixing connection plate; 16. Mounting frame; 701. Drive shaft; 702. Bidirectional threaded rod; 703. Baffle; 704. Sealing sleeve; 801. Rotating plate; 802. Handle; 803. Moving slot; 804. Slide rod; 805. Pull ring; 806. Insert rod; 807. Spring; 1001. Second adjusting seat; 1002. U-shaped insert block; 1003. Drive gear; 1004. Rack; 1005. Moving block; 1006. Hinge plate; 1007. First slot. Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.
[0020] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0021] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0023] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 present invention.
[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0025] Example: like Figures 1-6 As shown, it illustrates a heat exchanger with adjustable heat exchange area according to an embodiment of the present invention, comprising: The outer shell 1 has a first fixing plate 11 and a second fixing plate 12 fixedly connected inside it. The first fixing plate 11 and the second fixing plate 12 divide the interior of the outer shell 1 into a water inlet chamber, a heat exchange chamber and a turning chamber in sequence. A heat exchange tube 13 is provided inside the outer shell 1. The heat exchange tube 13 is fixedly connected to the second fixing plate 12. The side of the heat exchange tube 13 passes through the first fixing plate 11. A first adjusting seat 6 is provided on the side of the outer shell 1. The side of the first adjusting seat 6 has multiple sets of slots 9 arranged in a ring shape. The first adjustment mechanism includes a limiting component 8 and an adjustment component 7. The limiting component 8 is installed on the side of the first adjustment seat 6, and the adjustment component 7 is installed in the heat exchange cavity. The first adjustment mechanism is used to adjust the heat exchange area. The second adjustment mechanism includes a fixed connecting plate 15 fixedly connected to the inside of the water inlet chamber and a flipping component 10 installed on the side of the fixed connecting plate 15. The flipping component 10 is used to adjust the number of tube bundles. The outer shell 1 is precisely divided into a water inlet chamber, a heat exchange chamber, and a turning chamber by the first fixing plate 11 and the second fixing plate 12. This design can form independent fluid flow paths, effectively avoid cross-flow interference between different media, and ensure the orderliness and efficiency of the heat exchange process. The first adjustment mechanism achieves flexible and controllable adjustment of the heat exchange area through the cooperation of the limiting component 8 and the adjustment component 7. The adjustment component 7 can directly act on the effective heat exchange area and can adjust the range of the chambers involved in heat exchange in real time according to the operating load, solving the shortcomings of traditional heat exchangers where the heat exchange area cannot be adjusted. At the same time, with the locking of the annular slot 9 of the first adjustment seat 6 and the limiting component 8, the adjusted adjustment component 7 is rigidly fixed, ensuring that the adjusted heat exchange area parameters will not drift. The second adjustment mechanism, through the cooperation of the flipping component 10 of the fixed connecting plate 15, can directly realize the selective activation or deactivation of the number of heat exchange tube bundles, and also forms a "dual adaptation" mechanism with the heat exchange area adjustment of the first adjustment mechanism. This design can shut down some tube bundles under low load conditions to reduce ineffective heat exchange and energy waste, and can also increase the activation of tube bundles under high load or process adjustment. This design greatly improves the heat exchanger's adaptability to different loads and process scenarios. like Figure 1 and Figure 2 As shown, two mounting brackets 16 are fixedly connected to the bottom of the outer shell 1. The top and bottom of the outer shell 1 are respectively provided with a water inlet 2 and a water outlet 3 at the position corresponding to the water inlet cavity. The top and bottom of the outer shell 1 are respectively provided with a filling port 4 and a drain port 5 at the position corresponding to the heat exchange cavity. The filling port 4 and the drain port 5 are respectively located on both sides of the center line of the outer shell 1. The side of the first fixing plate 11 and the outer shell 1 form a water inlet cavity, and at the same time, it forms a complete passage with the water inlet 2 and the water outlet 3. The first fixing plate 11 and the second fixing plate 12 form a heat exchange cavity with the outer shell 1. The side of the first fixed plate 11 and the outer shell 1 form a water inlet chamber, and together with the water inlet 2 and the water outlet 3, they form a complete passage. The liquid to be cooled will enter the water inlet chamber composed of the fixed connecting plate 15 and the hinge plate 1006 through the water inlet 2, and flow through the heat exchange tube 13 to the water outlet chamber composed of the fixed connecting plate 15 and another hinge plate 1006, and finally flow out through the water outlet 3. The first fixing plate 11 and the second fixing plate 12 form a heat exchange chamber with the outer shell 1. The inlet 4 and the outlet 5 are respectively located on both sides of the centerline of the outer shell 1. During use, the coolant will enter the heat exchange chamber from the inlet 4 and be discharged from the outlet 5. The water inlet chamber and the heat exchange chamber are separated by the first fixing plate 11 and the second fixing plate 12. This design can completely avoid interference from medium crossflow. The inlet 4 and outlet 5 are arranged vertically above and below the heat exchange chamber. This design can reduce pipeline resistance and energy consumption, extend the contact time and contact area between the coolant and the heat exchange tube 13, ensure uniform heat exchange outside the heat exchange tube, and significantly improve heat exchange efficiency. The partitioned design of the water inlet chamber and the heat exchange chamber provides a stable control space for the first and second adjustment mechanisms, so that the adjustment of the heat exchange area and the adjustment of the number of tube bundles can be seamlessly coordinated with the fluid flow path, enhancing the applicability of the heat exchanger. The first adjustment mechanism includes a limiting component 8 and an adjusting component 7. The adjusting component 7 is the action execution unit of this mechanism. Its core function is to directly drive or guide the moving parts of the heat exchanger, thereby changing the effective heat exchange area participating in heat exchange. The limiting component 8 is used to immediately activate its core limiting function after the adjusting component 7 completes its predetermined stroke, thereby effectively preventing displacement after adjustment. When subjected to stress fluctuations caused by internal fluid impact, vibration, or temperature changes in the heat exchanger, the limiting component 8 can provide a rigid locking force for the adjusting component 7, ensuring that the adjusted heat exchange area parameters will not drift, thereby guaranteeing extreme stability of the process temperature. The second adjustment mechanism includes a fixed connecting plate 15 fixedly connected to the inside of the water inlet chamber and a flipping assembly 10 installed on the side of the fixed connecting plate 15. In use, the two hinge plates 1006 can rotate, and the number of heat exchange tubes 13 can be adjusted by rotating. This design can change the total heat exchange area of the heat exchanger, thereby indirectly affecting the fluid velocity, pressure drop and arrangement, thus having a decisive impact on the thermal performance, fluid resistance, structural strength and cost of the heat exchanger.
[0026] like Figures 1-5As shown, the limiting component 8 includes a rotating plate 801 mounted on the side of the outer shell 1. A handle 802 is fixedly connected to the side of the rotating plate 801. The rotating plate 801 and the handle 802 are an integral structure. A moving groove 803 is provided in the rotating plate 801 and the handle 802. When in use, the operator drives the rotating plate 801 to rotate by holding the handle 802. This design can shorten the operation process and thus simplify the operation. A sliding rod 804 is provided inside the movable slot 803. One end of the sliding rod 804 is fixedly connected to a pull ring 805, and the other end of the sliding rod 804 is fixedly connected to an insertion rod 806. The side of the insertion rod 806 passes through the rotating plate 801 and is inserted into the slot 9. The insertion of the insertion rod 806 and the slot 9 achieves rigid fixation, which can effectively prevent displacement after adjustment. A spring 807 is provided on the outer side of the slide bar 804. One end of the spring 807 is fixedly connected to the inner wall of the moving groove 803, and the other end of the spring 807 is fixedly connected to the connecting part on the outer side of the slide bar 804. A damping sleeve is provided inside the spring 807. The spring 807 is used to quickly reset the slide bar 804, thereby driving the insertion rod 806 and the slot 9 to quickly insert and connect, which can effectively improve the ease of use. The adjustment assembly 7 includes a drive shaft 701 fixedly connected to the side of the rotating plate 801. The drive shaft 701 and the rotating plate 801 are concentric and coaxial. A bidirectional threaded rod 702 is fixedly connected to the side of the drive shaft 701. The center of the bidirectional threaded rod 702 is rotatably connected to the inner wall of the outer shell 1 through the fixing frame 14. The operator drives the drive shaft 701 to rotate through the limiting assembly 8. The drive shaft 701 is used to drive the baffle 703 by thread. The bidirectional threaded rod 702 is rotatably connected to the inner wall of the outer shell 1 through the fixing frame 14. The fixing frame 14 is used to guide the bidirectional threaded rod 702 to prevent it from deforming due to long-term use. The threaded portions on both sides of the bidirectional threaded rod 702 are respectively connected to two baffles 703. The outer sides of the two baffles 703 are sealed to the inner wall of the heat exchange chamber. A sealing sleeve 704 is provided inside the baffles 703 at the position corresponding to the heat exchange tube 13. The sealing sleeve 704 is sealed to the outside of the heat exchange tube 13. The two baffles 703 will move under the thread drive of the bidirectional threaded rod 702, thereby realizing the process of adjusting the heat exchange area. By using the adjustment component 7 and the limiting component 8 together, not only can the heat exchange area be flexibly adjusted, but also the adjustment component 7 can be limited after completing the predetermined stroke through its internal limiting and locking mechanism. This design can effectively prevent displacement after adjustment, thereby ensuring the extreme stability of the process temperature. Moreover, the entire adjustment process does not require stopping the machine to disassemble the equipment, and the heat exchange area can be adjusted online, avoiding the problem of production stoppage required for traditional heat exchanger adjustment and ensuring production continuity. Among them, the thread drive of the bidirectional threaded rod 702 has high precision characteristics, which can drive the two baffles 703 to move synchronously and smoothly, realize the gradient adjustment of the heat exchange area, and thus match the heat exchange load requirements under different working conditions. The double sealing design of the baffle 703 and the inner wall of the heat exchange chamber, and the sealing sleeve 704 and the heat exchange tube 13 completely blocks the coolant leakage path, which can not only ensure heat exchange efficiency, but also prevent safety hazards caused by media leakage and improve the safety of equipment operation. The handle 802 and the rotating plate 801 are integrally formed. The spring 807 realizes the automatic reset and insertion of the plug rod 806, which can complete the adjustment of the heat exchange area without complicated operation, greatly improving the operating efficiency. The rigid insertion design of the plug rod 806 and the slot 9 can resist the impact of internal fluids, equipment vibration and temperature stress fluctuations, and completely eliminate the displacement of the baffle 703 after adjustment. The damping sleeve is used to avoid hard impact between the plug rod 806 and the slot 9 and extend the service life of the locking structure. In use, first pull the pull ring 805 outwards. At this time, the slide bar 804 and the insertion rod 806 move outwards with the pull ring 805 until the insertion rod 806 separates from the slot 9. Then, the operator holds the handle 802 to rotate the rotating plate 801. During the rotation of the rotating plate 801, the drive shaft 701 and the bidirectional threaded rod 702 rotate accordingly. At this time, the two baffles 703 located on the threaded portions on both sides of the bidirectional threaded rod 702 also move along the bidirectional threaded rod 702 under the threaded drive. The chamber formed by the two baffles 703 and the outer shell 1 is the actual heat exchange chamber. This design transforms the adjustment of the heat exchange area into the adjustment of the position of the two baffles 703. During the adjustment process, since the outer side of the baffle 703 is sealed and fitted with the inner wall of the heat exchange chamber, and the baffle 703 is provided with a sealing sleeve 704 at the position corresponding to the heat exchange tube 13, and the sealing sleeve 704 is tightly fitted with the outside of the heat exchange tube 13, this double sealing structure prevents the coolant from leaking from the gap of the baffle 703 or the heat exchange tube penetration, ensuring the airtightness of the heat exchange chamber. After adjustment, release the pull ring 805. At this time, the slide bar 804 will drive the insertion rod 806 to move under the reset action of the spring 807 until the insertion rod 806 is re-inserted into the slot 9. This will limit the adjustment component 7 that has completed the predetermined stroke, thereby effectively preventing displacement after adjustment and ensuring extreme stability of the process temperature. like Figure 2 , Figure 3 and Figure 6 As shown, on the other hand, the present invention also provides a heat exchanger with adjustable heat exchange area, including a flipping assembly 10; The flipping assembly 10 includes a second adjusting seat 1001 disposed on the side of the outer casing 1 and two hinge plates 1006 hinged to the side of the fixed connecting plate 15. The outer sides of both hinge plates 1006 are sealed against the inner wall of the outer casing 1. Both sides of the rotation shaft of each hinge plate 1006 are rotatably connected to the outer casing 1, and a drive gear 1003 is fixedly connected to the side closest to the second adjusting seat 1001. The flipping of the two hinge plates 1006 allows for adjustment of the number of heat exchange tubes 13. Furthermore, the outer sides of the hinge plates 1006 are sealed against the inner wall of the water inlet chamber, ensuring the sealing performance of the hinge plates 1006 during rotation and preventing leakage from the connection points. A rack 1004 is provided between two drive gears 1003. The rack 1004 moves in the groove of the second adjusting seat 1001. The two sides of the rack 1004 are respectively meshed with the two drive gears 1003. A moving block 1005 is fixedly connected to the side of the rack 1004. A second slot is opened on the side of the moving block 1005. During the movement of the rack 1004, the gears on the upper and lower sides drive the two drive gears 1003 to rotate through meshing transmission, thereby driving the hinge plate 1006 to rotate. This design converts the linear motion of the rack 1004 into the curvilinear motion of the two drive gears 1003, thereby enabling the two hinge plates 1006 to deflect. The second adjusting seat 1001 has two first slots 1007 on its side and a U-shaped plug 1002 on its side. One end of the U-shaped plug 1002 is inserted into one of the first slots 1007, and the other end of the U-shaped plug 1002 is inserted into the second slot. The U-shaped plug 1002 is used to limit the position of the hinge plate 1006 after adjustment.
[0027] The number of heat exchange tubes can be directly controlled by flipping the hinge plate 1006, allowing for switching between 100% and 50% settings. Combined with the fine-tuning of the heat exchange area by the first adjustment mechanism, a dual adjustment system of "tube bundle number + heat exchange area" is formed. This design can reduce ineffective heat exchange by closing some tube bundles under low load and fully open all tube bundles to meet demand under high load. Compared to traditional methods that require equipment shutdown for adjustment, this design allows for rapid changes in the total heat exchange area of the heat exchanger, effectively shortening downtime for maintenance and reducing operating costs. The double-slot design of the U-shaped insert 1002 provides rigid locking, protecting against stress impacts caused by fluctuations in operating conditions and ensuring the stable and controllable tube bundle number parameter. The rack 1004 meshes with two drive gears 1003, precisely converting linear motion into flipping motion with high transmission efficiency. The sliding groove of the second adjustment seat 1001 guides and limits the rack 1004, and the fixed connection between the hinge plate 1006 and the rotating shaft ensures strong structural rigidity. In use, the number of heat exchange tubes 13 can be adjusted according to actual needs. The adjustment process is as follows: Before adjustment, remove the U-shaped insert 1002, then press and hold the moving block 1005 and push the moving block 1005 to the side. The moving block 1005 drives the rack 1004 to move. During the movement of the rack 1004, the gears on the upper and lower sides drive the two drive gears 1003 to rotate through meshing transmission, thereby driving the hinge plate 1006 to rotate. This design converts the linear motion of the rack 1004 into the curvilinear motion of the two drive gears 1003, so that the two hinge plates 1006 can deflect, thereby adjusting the number of heat exchange tubes 13. The outer side of the hinge plate 1006 is sealed to the inner wall of the water inlet chamber. This design can ensure the sealing of the hinge plate 1006 during rotation, thus preventing leakage from the connection point. After the movement is completed, the moving block 1005 and the first slot 1007 are inserted by the U-shaped insert 1002 to achieve a limit, preventing the hinge plate 1006 from shifting during use. When the hinge plate 1006 is flipped to different angles, it can "open" or "block" the heat exchange tube 13 passage: when the hinge plate 1006 is fully open, all heat exchange tubes 13 participate in heat exchange, and the tube bundle passage is 100%; when the hinge plate 1006 is deflected to block part of the heat exchange tubes 13, only the remaining heat exchange tubes participate in heat exchange, and the tube bundle passage is 50%. This design precisely controls the number of tubes in use by flipping the angle.
[0028] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.
Claims
1. A heat exchanger with adjustable heat exchange area, characterized in that, include: The outer shell (1) is fixedly connected to a first fixing plate (11) and a second fixing plate (12). The first fixing plate (11) and the second fixing plate (12) divide the interior of the outer shell (1) into a water inlet chamber, a heat exchange chamber and a turning chamber in sequence. A heat exchange tube (13) is provided inside the outer shell (1). The heat exchange tube (13) is fixedly connected to the second fixing plate (12). The side of the heat exchange tube (13) passes through the first fixing plate (11). A first adjusting seat (6) is provided on the side of the outer shell (1). The side of the first adjusting seat (6) is provided with multiple sets of slots (9) in a ring shape. The first adjustment mechanism includes a limiting component (8) and an adjustment component (7). The limiting component (8) is installed on the side of the first adjustment seat (6), and the adjustment component (7) is installed in the heat exchange cavity. The first adjustment mechanism is used to adjust the heat exchange area. The limiting component (8) includes a rotating plate (801) mounted on the side of the outer shell (1). A handle (802) is fixedly connected to the side of the rotating plate (801). The rotating plate (801) and the handle (802) are an integral structure. A moving groove (803) is provided in the rotating plate (801) and the handle (802). A sliding rod (804) is provided in the moving groove (803). A pull ring (805) is fixedly connected to one end of the sliding rod (804). An insertion rod (806) is fixedly connected to the other end of the sliding rod (804). The side of the insertion rod (806) passes through the rotating plate (801) and is inserted into the slot (9). The second adjustment mechanism includes a fixed connecting plate (15) fixedly connected to the inside of the water inlet chamber and a flipping component (10) installed on the side of the fixed connecting plate (15). The flipping component (10) is used to adjust the number of tube bundles. The adjustment assembly (7) includes a drive shaft (701) fixedly connected to the side of the rotating plate (801). The drive shaft (701) and the rotating plate (801) are concentric and coaxial. A bidirectional threaded rod (702) is fixedly connected to the side of the drive shaft (701). The center of the bidirectional threaded rod (702) is rotatably connected to the inner wall of the outer shell (1) through a fixing frame (14). The threaded portions on both sides of the bidirectional threaded rod (702) are respectively threaded to two baffles (703). The outer sides of the two baffles (703) are sealed to the inner wall of the heat exchange chamber. A sealing sleeve (704) is provided inside the baffle (703) at the position corresponding to the heat exchange tube (13). The sealing sleeve (704) is sealed to the outside of the heat exchange tube (13).
2. The heat exchanger with adjustable heat exchange area according to claim 1, characterized in that, Two mounting brackets (16) are fixedly connected to the bottom of the outer shell (1). The top and bottom of the outer shell (1) are respectively provided with an inlet (2) and an outlet (3) at the position corresponding to the water inlet cavity. The top and bottom of the outer shell (1) are respectively provided with an inlet (4) and an outlet (5) at the position corresponding to the heat exchange cavity. The inlet (4) and the outlet (5) are respectively located on both sides of the centerline of the outer shell (1).
3. The heat exchanger with adjustable heat exchange area according to claim 2, characterized in that, A spring (807) is provided on the outside of the slide rod (804). One end of the spring (807) is fixedly connected to the inner wall of the moving groove (803), and the other end of the spring (807) is fixedly connected to the connecting part on the outside of the slide rod (804). A damping sleeve is provided inside the spring (807).
4. The heat exchanger with adjustable heat exchange area according to claim 1, characterized in that, The flipping assembly (10) includes a second adjusting seat (1001) disposed on the side of the outer shell (1) and two hinge plates (1006) hinged to the side of the fixed connecting plate (15). The outer sides of the two hinge plates (1006) are sealed and fitted to the inner wall of the outer shell (1). The two sides of the rotation shaft of the two hinge plates (1006) are rotatably connected to the outer shell (1), and a drive gear (1003) is fixedly connected to the side near the second adjusting seat (1001).
5. A heat exchanger with adjustable heat exchange area according to claim 4, characterized in that, A rack (1004) is provided between the two drive gears (1003). The rack (1004) moves in the groove of the second adjusting seat (1001). The two sides of the rack (1004) are respectively meshed with the two drive gears (1003). A moving block (1005) is fixedly connected to the side of the rack (1004). A second slot is opened on the side of the moving block (1005).
6. A heat exchanger with adjustable heat exchange area according to claim 4, characterized in that, The second adjustment seat (1001) has two first slots (1007) on its side and a U-shaped plug (1002) on its side. One end of the U-shaped plug (1002) is inserted into one of the first slots (1007), and the other end of the U-shaped plug (1002) is inserted into the second slot.