A partition heat exchange condensing device for cooling tower

Abstract

The utility model discloses a kind of wall type heat exchange condensing devices for cooling tower, belong to cooling tower technical field, be arranged in cooling tower, including heat exchange module and ventilating tube. Heat exchange module both sides are provided with the air deflector connected with the upper end of cooling tower filler module, upper end is equipped with air outlet, bottom and oblique lower side are equipped with air inlet. The upper end of ventilating tube is communicated with the air inlet of heat exchange module bottom, lower end is provided with air inlet. Louver damper is provided at air inlet. The utility model is installed in the inside of cooling tower, does not occupy space, by condensing and recycling water vapor in humid hot air, realize the effect of energy saving, water saving and fog elimination, and solve the problem of frost and ice formation of cooling tower in northern region.

Description

Technical Field

[0001] This utility model belongs to the field of cooling tower technology, specifically a partition wall heat exchange condensation device for cooling towers. Background Technology

[0002] Existing crossflow open cooling towers directly release hot, humid air into the atmosphere during operation. This humid air, carrying water vapor, not only wastes water resources but also mixes with surrounding cold air to form large amounts of fog, affecting the environment and equipment safety. Especially in cold northern regions or high-latitude, high-altitude areas, the hot, humid air easily frosts or freezes near the cooling tower after contacting dry, cold air, leading to equipment malfunctions and increased maintenance costs. Furthermore, high-latitude or high-altitude areas are often arid or semi-arid regions with scarce freshwater resources; the water vapor emissions from cooling towers further exacerbate this scarcity.

[0003] Currently, although some cooling tower technologies have attempted to address the fogging problem, most solutions either fail to effectively recover water vapor or have limited effectiveness in energy and water conservation, failing to simultaneously meet the needs of northern regions for preventing frost and ice formation, as well as the performance requirements of cooling towers in both winter and summer. Therefore, developing a cooling tower device that can efficiently eliminate fog, save energy and water, and adapt to cold climates has become an urgent need in the field of upgrading and retrofitting cooling tower applications. Utility Model Content

[0004] To address the above problems, this utility model aims to provide a partitioned heat exchange condensation device for cooling towers. It is installed inside the cooling tower and does not occupy external space. It recovers water vapor from humid and hot air through condensation, achieving energy saving, water saving, and defogging effects, and solving the problem of frost and ice formation on cooling towers in northern regions.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A partition wall heat exchange condensation device for a cooling tower is installed inside the cooling tower and includes a heat exchange module and a ventilation duct. The heat exchange module has air guide plates on both sides that are connected to the upper end of the cooling tower packing module. The upper end has an air outlet, and the bottom and the lower side have air inlets. The upper end of the ventilation duct is connected to the bottom air inlet of the heat exchange module, and the lower end has an air inlet. A louvered damper is installed at the air inlet.

[0007] The beneficial effects of the above technical solution are as follows:

[0008] This defogging device, through the rational design of the heat exchange module and ventilation duct structure and connection method, effectively guides and mixes humid and hot air with dry and cold air, providing favorable conditions for subsequent heat exchange and water vapor condensation. At the same time, the installation of air guide plates and louvered dampers further optimizes the airflow path and improves heat exchange efficiency, laying the foundation for achieving efficient defogging and energy and water conservation.

[0009] As a further improvement to the above solution, the heat exchange module is composed of stacked diaphragms with ventilation gaps between adjacent diaphragms. The ventilation gap at the bottom forms the bottom air inlet, the ventilation gap at the top forms the air outlet, and the ventilation gap at the lower angle forms the lower angle air inlet.

[0010] The beneficial effects of the above technical solution are as follows:

[0011] The heat exchange module structure, employing a stacked combination of spaced diaphragms, increases the contact area between humid, hot air and dry, cold air, thereby improving heat exchange efficiency. Simultaneously, the rational distribution of ventilation gaps ensures smoother airflow, further optimizing the heat exchange process and enhancing condensation, thus better achieving the goals of defogging and energy / water conservation.

[0012] As a further improvement to the above scheme, curved edges for water collection are provided at the bottom and lower oblique edges of the spacer membrane.

[0013] The beneficial effects of the above technical solution are as follows:

[0014] Water collection bends are installed at the bottom and lower oblique edges of the diaphragm to effectively collect water droplets generated during condensation, prevent water droplets from being discharged with the air, improve the water recycling rate, further reduce water waste, and enhance the energy and water saving effect of the device.

[0015] As a further improvement to the above solution, the surface of the spacer diaphragm is provided with an array of figure-eight shaped protrusions facing the front, and between two adjacent rows of figure-eight shaped protrusions, there is a row of horizontal protrusions facing the back, spaced apart.

[0016] The beneficial effects of the above technical solution are as follows:

[0017] The design of the diaphragm, incorporating both figure-eight and horizontal ribs, further optimizes the airflow path. This allows condensate to flow along the ribs to different points, improving its positional fluidity on the diaphragm. The position and structure of the ribs are specifically designed to optimize airflow; condensate flows above the ribs, while air flows below. Air entering from the narrow opening at the top of the lower figure-eight rib into the wide opening at the bottom of the upper figure-eight rib creates a vortex, further carrying away heat and improving condensation efficiency. This ensures thorough mixing and heat exchange between humid and dry air within the heat exchange module. The horizontal ribs further enhance the meandering airflow within the diaphragm, further promoting condensate collection efficiency and ensuring thorough mixing and heat exchange between humid and dry air. Simultaneously, this structural design strengthens the diaphragm's mechanical strength, improving the stability and reliability of the device.

[0018] As a further improvement to the above scheme, the spacer diaphragm is pentagonal or hexagonal.

[0019] The beneficial effects of the above technical solution are as follows:

[0020] Using pentagonal or hexagonal spacer diaphragms can better adapt to the structural requirements of the heat exchange module, further optimize the airflow path, and improve heat exchange efficiency. Furthermore, when stacked, these shaped spacer diaphragms can form a bottom air inlet, a downward-sloping air inlet, and a top air outlet. The pentagonal shape reduces the top height, while the hexagonal shape improves condensation efficiency.

[0021] The overall beneficial effects of this utility model compared with the prior art are as follows:

[0022] This utility model features an innovatively designed high-efficiency defogging device that can be installed inside a cooling tower without occupying external space. It achieves efficient heat exchange between humid and hot air and dry and cold air, effectively recovers water vapor from the humid and hot air, reduces water waste, and simultaneously reduces fog formation, thus improving the environment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the cooling tower using this device.

[0024] Figure 2 This is a schematic diagram of the internal structure of a cooling tower using this device.

[0025] Figure 3 This is a schematic diagram of the bottom structure of a cooling tower using this device.

[0026] Figure 4 This is a schematic diagram of a partition wall heat exchange condensation device.

[0027] Figure 5This is a schematic diagram of the ventilation duct structure.

[0028] Figure 6 This is a schematic diagram of a hexagonal spacer membrane structure.

[0029] Figure 7 This is a schematic diagram of a pentagonal spacer membrane structure.

[0030] Figure 8 This is a schematic diagram of the side structure of the spacer diaphragm.

[0031] In the diagram: 1. Tower body; 2. Fan system; 3. Packing module; 4. Air guide plate; 5. Heat exchange module; 6. Ventilation duct; 7. Louvered damper; 51. Spacer diaphragm; 55. Herringbone ridge; 56. Horizontal ridge; 57. Bent edge. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution, the present invention will be described in detail below with reference to the embodiments. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0033] I. Composition of the cooling tower using this device

[0034] like Figures 1-8 As shown, a high-efficiency cross-flow open-type defogging cooling tower mainly consists of key components such as the cooling tower body 1, the indirect heat exchange and condensation device, the air guide plate 4, and the louvered damper 7. The cooling tower body 1 serves as the main structure of the entire device, with a reasonable internal layout of various functional components to ensure smooth and efficient airflow.

[0035] The indirect heat exchange condensation unit is the core component, comprising a heat exchange module 5 and a ventilation duct 6. The heat exchange module 5 is located above the air outlet of the packing module 3. It has an air outlet at its upper end and air inlets at its bottom and lower side, allowing for smooth entry and heat exchange between humid and dry air. The dry-cold air ventilation duct 6 is supported at the bottom of the cooling tower and connected to the air inlet at the bottom of the heat exchange module 5, ensuring that dry-cold air is effectively guided to the heat exchange area; it also isolates the air intakes on the left and right sides, effectively improving airflow efficiency.

[0036] Two air guide plates 4 are installed on both sides of the upper air outlet of the packing module 3. Their function is to guide the hot and humid air drawn into the tower by the fan system 2 to the lower inlets on both sides of the heat exchange module 5, ensuring the accuracy of the airflow path and improving heat exchange efficiency. Louvered dampers 7 are installed at the bottom opening of the cooling tower body 1 to control and adjust the amount of cold air entering the ventilation duct 6, dynamically adjusting according to environmental conditions to achieve the best heat exchange effect.

[0037] II. Details of Key Components

[0038] (I) Heat exchange module

[0039] The heat exchange module 5 is composed of vertically stacked diaphragms 51, with ventilation gaps between adjacent diaphragms 51. The bottom ventilation gap forms the bottom air inlet, the upper ventilation gap serves as the air outlet, and the downward-sloping ventilation gap forms the downward-sloping air inlet. This design significantly increases the contact area between humid and hot air and dry and cold air, optimizes the airflow path, and ensures sufficient heat exchange.

[0040] The bottom and lower oblique edges of the diaphragm 51 are carefully designed with curved edges 57 for water collection. The curved edges 57 can effectively collect water droplets generated during condensation and prevent them from being discharged with the air, thereby greatly improving the water recycling rate and reducing waste.

[0041] The spacer diaphragm 51 is specially designed, and can be hexagonal or pentagonal. The surface of the spacer diaphragm 51 is covered with an array of V-shaped ridges 55 protruding towards the front, and between adjacent rows of V-shaped ridges 55 is a row of horizontal ridges 56 protruding towards the back, spaced apart. This unique design makes the airflow path more complex, and the position of the condensate changes frequently as it flows along the ridges, further improving condensation efficiency. When air enters from the narrow opening at the top of the lower V-shaped ridge 55 into the wide opening at the bottom of the upper V-shaped ridge 55, a backflow vortex is generated, which is more conducive to heat exchange and water vapor condensation. The horizontal ridges 56 further promote the meandering flow of air within the spacer diaphragm 51, improving the condensate collection efficiency.

[0042] (II) Air guide plate

[0043] One end of the air guide plate 4 is firmly connected to the top of the packing module 3, and the other end is tightly connected to the side of the heat exchange module 5. This connection design ensures that hot and humid air can be accurately introduced into the lower oblique inlet of the heat exchange module 5, optimizing the airflow path and improving heat exchange efficiency. At the same time, the air guide plate 4 has a simple structure, is easy to install and maintain, and effectively reduces production costs. Furthermore, in summer operating conditions, it can be mirror-connected to the bottom of the packing module 3 as an air guide plate to improve air outlet efficiency.

[0044] The louvered damper 7 is installed at the bottom opening of the cooling tower body 1, and its opening degree is automatically adjusted by an intelligent controller according to the ambient temperature and humidity. This intelligent design enables the device to dynamically adjust the amount of cold air according to different climatic conditions, ensuring efficient operation in various environments. By rationally controlling the amount of cold air entering the ventilation duct 6, the louvered damper 7 works in conjunction with the heat exchange module 5 to achieve optimal defogging and energy-saving effects.

[0045] III. Working Principle and Operating Procedures

[0046] (I) Working Principle

[0047] This invention achieves efficient heat exchange between humid and dry air through a partition-type heat exchange and condensation device. When the cooling tower is running, the fan system 2 draws in outside air, which is then heated by the packing module 3 to form humid air. This humid air carries a large amount of water vapor. The air guide plates 4 direct the humid air to the lower inlets on both sides of the heat exchange module 5. Simultaneously, the louvered dampers 7 adjust the airflow according to environmental conditions, guiding the dry air from outside the tower into the lower inlet of the heat exchange module 5.

[0048] Within heat exchange module 5, humid hot air and dry cold air exchange heat through diaphragm 51. Saturated humid hot steam condenses isothermally during the heat exchange process, and the condensed water droplets flow back to the bottom of the cooling tower along the curved edge 57 of diaphragm 51, achieving effective water recovery. The dehumidified unsaturated air after heat exchange mixes with the heated dry air drawn in from the bottom, entering the lower air collection chamber of the duct under the action of the top fan, and is finally evenly discharged into the atmosphere, reducing fog formation and improving the environment.

[0049] (II) Operating Procedures

[0050] 1. Start the cooling tower fan system 2 to draw hot and humid air into the tower.

[0051] 2. Guided by the air guide plate 4, the hot and humid air flows towards the lower inlets on both sides of the heat exchange module 5.

[0052] 3. The louvered damper 7 automatically adjusts its opening and closing degree according to the ambient temperature and humidity, and introduces an appropriate amount of dry and cold air from the bottom opening of the tower body 1 into the ventilation duct 6, and finally into the inlet directly below the heat exchange module 5.

[0053] 4. Inside the heat exchange module 5, humid hot air and dry cold air exchange heat through the spacer diaphragm 51. Water vapor in the humid hot air condenses into water droplets and flows back to the bottom of the cooling tower along the curved edge 57 of the spacer diaphragm 51.

[0054] 5. The dehumidified unsaturated air and the heated dry air are mixed in the air collection chamber at the bottom of the air duct by the top ventilator, and then evenly discharged into the atmosphere to complete the defogging process.

[0055] IV. Beneficial Effects

[0056] This invention utilizes an innovative indirect heat exchange and condensation device design to achieve highly efficient heat exchange between humid and hot air and dry and cold air. It effectively recovers water vapor from the humid air, reducing water waste and minimizing fog formation, thus improving the aesthetics of the environment. The synergistic effect of the air guide plate 4 and the louvered damper 7 optimizes the airflow path, improves condensation efficiency, solves the problem of frost and ice formation on cooling towers in northern regions, extends equipment lifespan, and reduces maintenance costs.

[0057] It should be noted that, in this document, the terms "comprising," "including," and any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of the present invention. These examples are merely for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be pointed out that, due to the limitations of written expression and the objective existence of infinite specific structures, those skilled in the art can make several improvements, modifications, or variations without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the concept and technical solution of the present invention to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A partition wall-type heat exchange condensation device for a cooling tower, installed inside the cooling tower, characterized in that, It includes a heat exchange module (5) and a ventilation duct (6); the heat exchange module (5) is provided with air guide plates (4) on both sides that are connected to the upper end of the cooling tower packing module (3), with an air outlet at the upper end and an air inlet at the bottom and the lower side; the upper end of the ventilation duct (6) is connected to the air inlet at the bottom of the heat exchange module (5), and an air inlet is provided at the lower end; a louvered damper (7) is provided at the air inlet.

2. The indirect-connection heat exchange condensation device for a cooling tower according to claim 1, characterized in that, The heat exchange module (5) is composed of stacked and combined spacer diaphragms (51); ventilation gaps are left between adjacent spacer diaphragms (51); the ventilation gap at the bottom constitutes the bottom air inlet, the ventilation gap at the top constitutes the air outlet, and the ventilation gap at the lower angle constitutes the lower angle air inlet.

3. A partition wall heat exchange condensation device for a cooling tower according to claim 2, characterized in that, The spacer membrane (51) has curved edges (57) at its bottom and lower oblique edges for water collection.

4. A partition wall heat exchange condensation device for a cooling tower according to claim 2, characterized in that, The surface of the spacer diaphragm (51) is provided with an array of figure-eight shaped protrusions (55) that protrude towards the front, and between two adjacent rows of figure-eight shaped protrusions (55) there is a row of horizontal protrusions (56) that are spaced apart and protrude towards the back.

5. A partition wall heat exchange condensation device for a cooling tower according to claim 2, characterized in that, The spacer diaphragm (51) is pentagonal or hexagonal.

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