A bottom air inlet mist-eliminating peak closed condenser cooler

Abstract

The application provides a bottom air inlet mist-eliminating sharp peak closed condenser cooler, which comprises a box body, a mixed air chamber is arranged at the upper position of the inner cavity of the box body, two mist-eliminating modules are arranged in the box body and are connected with each other, a resistance-reducing louver and a water distribution device are sequentially arranged between the mist-eliminating modules and the side wall of the box body, the two mist-eliminating modules, the resistance-reducing louver and the water distribution device divide the lower cavity of the box body into a first cavity, a second cavity and a third cavity, the mist-eliminating module is provided with a cold air channel and a hot air channel which are connected with the mixed air chamber respectively, and the bottom air inlet structure design can realize sufficient fresh air introduction area without increasing the height of the equipment, thereby reducing the air path resistance, the operating pressure head of the fan and the energy consumption, and improving the overall energy-saving performance of the equipment. Meanwhile, the lift demand of the spray water pump is reduced without increasing the vertical size of the equipment, the energy consumption and the operating burden of the water pump are reduced, and the overall operating economy and the structural compactness of the equipment are improved.

Description

Technical Field

[0001] This invention belongs to the field of heat exchange technology, specifically relating to a bottom-inlet, demisting, peak-type closed-loop condenser cooler. Background Technology

[0002] Evaporative condensers, as a type of high-efficiency heat exchange device, work primarily on the heat absorption of sprayed water through evaporation and the heat transfer of air through convection. The specific process is as follows: A spray system is installed at the top of the evaporative condenser. A circulating water pump delivers water from the tank to this spray system. Under gravity, the water is sprayed through nozzles onto the outer surface of the coils, forming a water film. When the fan runs, it draws outside air into the equipment. The air exchanges heat with the water film on the outer surface of the coils. During this process, some of the water in the film evaporates into water vapor, and this evaporation process absorbs heat from the medium inside the coils. The resulting water vapor is then expelled from the equipment with the air. The entire heat exchange process involves a significant consumption of spray water.

[0003] When the ambient temperature is low, the nearly saturated, hot and humid air at the outlet of the evaporative condenser comes into contact with the low-temperature ambient air, causing condensation and precipitation of small water droplets, resulting in a white fog phenomenon.

[0004] Existing defogging devices involve adding a diamond-shaped defogging module to the upper part of the equipment, which has the following disadvantages: During summer operation, the diamond-shaped defogging module increases the resistance of the equipment and reduces the ventilation area of ​​the evaporative cooling condenser, thereby increasing the energy consumption of the fan.

[0005] In winter, for large equipment with heat exchange components arranged back-to-back and sharing a fan, the existing defogging method can only introduce fresh cold air from the end. Due to the influence of the end air intake structure, the air intake area is small and the air pressure drop is large, resulting in high fan energy consumption and uneven air intake of the defogging module. Especially when the equipment is arranged in a row, the end of the equipment is occupied, so it is impossible to introduce fresh cold air and achieve the defogging function. Summary of the Invention

[0006] This invention provides a bottom-inlet, closed-loop condenser cooler with defogging, which solves the problems mentioned in the background art. In summer, the defogging module of the existing condenser cooler increases the wind resistance and energy consumption of the equipment. In winter, the air intake area is limited and the air pressure is uneven. In particular, in the case of equipment arranged in a row, it is impossible to effectively introduce cold air, which leads to the failure of the defogging function.

[0007] The technical solution adopted in this invention is: a bottom-inlet, fog-eliminating, peak-type closed-loop condenser cooler, comprising a housing, with a mixing chamber located at the upper part of the inner cavity of the housing; The interior of the enclosure is equipped with two connected anti-fogging modules. Between the anti-fogging modules and the side wall of the enclosure, there are drag-reducing louvers and a water distribution device. The two anti-fogging modules, drag-reducing louvers and water distribution device divide the lower cavity of the enclosure into a first cavity, a second cavity and a third cavity. The defogging module has a cold air passage and a hot air passage that are respectively connected to the mixing chamber; The hot air channels of the two defogging modules are connected to the first cavity and the second cavity, respectively; The cold air channels of the two defogging modules are connected to the third cavity; Evaporation coils are installed inside the first and second cavities and near the side wall of the box. Water dripping from the water distribution device can fall onto the heat exchange wall of the evaporation coils. It also includes a peaking device, which is located inside the chamber of the tank and directly above the water distribution device; The first cavity, the second cavity, the third cavity, and the spike device are each equipped with an openable and closable ventilation component near the side wall of the enclosure.

[0008] The system also includes a water supply system, which includes a circulating water tank installed at the bottom of the tank. A circulating water pump is installed on the circulating water tank, and the output end of the circulating water pump is connected to a water inlet pipe. The water inlet pipe is divided into two lines. One line is connected to a spray device above the peak device, which is configured to spray water onto the peak device. The other line is connected to a water distribution device, which is configured to sprinkle water droplets onto the evaporation coil below. Each of the two water inlet pipes is equipped with a regulating valve.

[0009] A sedimentation tank is installed at the bottom of the circulating water tank.

[0010] A condensate recovery tray is provided at the bottom of the box containing the first cavity and the second cavity, and the condensate recovery tray is connected to the circulating water tank.

[0011] The evaporator coil has a medium inlet and a medium outlet extending to the outside of the housing at both ends.

[0012] A water collector is installed above the drag-reducing louvers.

[0013] The defogging module has a rhomboid cross-section, with a partition connected below it, and the end of the partition is fixed to the bottom of the box.

[0014] An exhaust fan is installed on the top of the enclosure.

[0015] The openable and closable ventilation components are as follows: The spike louvers are located on the side wall of the enclosure near the spike device. Anti-freeze louvers are installed on the side wall of the housing near the first and second cavities; The new cold air louvers are located on the bottom wall of the housing near the third cavity; Among them, the three types of louvers and the drag-reducing louvers are any one of manual louvers, pneumatic louvers, and electric louvers.

[0016] The beneficial effects of this invention are as follows: 1. This invention, by setting up an independent peak-spraying device and configuring peak-spraying louvers, can enhance the spray cooling capacity per unit time under high-temperature peak conditions in summer, effectively improve the heat exchange capacity of the equipment, ensure that the system still has good stability under high-load operating conditions, and ensure that the equipment can smoothly get through the summer.

[0017] 2. By setting up a diamond-shaped defogging packing and a bottom air inlet structure, in the winter defogging operation mode, the hot and humid air at the outlet of the evaporator coil is first condensed and cooled in the defogging packing, and then mixed with the low-temperature fresh air introduced at the bottom in the mixing chamber, so that the temperature and humidity of the exhaust air are significantly reduced, thereby reducing the risk of white fog formation and achieving efficient defogging.

[0018] 3. This invention, through its bottom-intake structural design, achieves sufficient fresh air intake area without increasing equipment height, thereby reducing airflow resistance, lowering fan operating head and energy consumption, and improving the overall energy-saving performance of the equipment. Simultaneously, without increasing the vertical dimensions of the equipment, it reduces the head requirement of the spray pump, decreasing pump energy consumption and operational burden, and improving the overall operational economy and structural compactness of the equipment.

[0019] 4. By configuring the peak-spraying device and the evaporator coil in parallel, the present invention can flexibly switch the operating mode according to seasonal load changes. During non-peak seasons, the peak-spraying device can be completely shut down and no longer participate in spraying and heat exchange, avoiding unnecessary spraying water consumption. At the same time, the condensate during the defogging operation is recycled to the circulating water tank, realizing closed-loop water utilization, significantly reducing the overall water consumption, and having a good water-saving effect.

[0020] 5. This invention employs a fully enclosed control design for various types of louvers, allowing all air vents to be completely sealed under extreme low-temperature conditions. This prevents the exhaust fan from drawing air out, keeps the equipment in a thermally sealed state, creating a "warm room" effect, preventing the medium inside the pipes from freezing, and providing excellent antifreeze capabilities to ensure the equipment can stably survive the winter.

[0021] 6. This invention uses various types of louvers (such as peak louvers, antifreeze louvers, drag-reducing louvers, and fresh air louvers) to set up an adjustable opening structure, and supports manual, pneumatic or electric control, so that the system can flexibly adjust the airflow direction and distribution, and can obtain good heat exchange effect in different operating modes, further improving heat exchange efficiency.

[0022] 7. By setting the peak-load device as an independent module and allowing maintenance in a shutdown state, the present invention enables cleaning and maintenance during off-peak seasons without the need for a complete shutdown, ensuring continuous production operation, high maintenance efficiency, small impact range, and enhancing the maintainability and reliability of the equipment.

[0023] 8. By setting up a submerged sedimentation tank structure, this invention provides a dedicated space for dirt accumulation, which facilitates regular centralized sewage discharge and keeps the water clean. At the same time, the submerged structure increases the liquid level at the suction port of the circulating water pump, effectively reducing the risk of pump cavitation, extending the service life of the pump, and reducing the overall operating weight of the equipment, thus optimizing the structural strength design.

[0024] 9. Through functional integration and structural optimization design, this invention achieves integrated operation of multiple working conditions such as peak operation, water-saving mode, energy-saving mode, defogging mode, and antifreeze mode. It can flexibly switch according to the application scenario and changes in ambient temperature, realize the optimized allocation of resources and the integrated utilization of functional modules, truly achieve multi-purpose use of one machine, and improve the overall efficiency of the equipment. Attached Figure Description

[0025] Figure 1 This is a side view of the present invention; Figure 2 This is a schematic diagram of the summer peak operation mode of the present invention; Figure 3 This is a schematic diagram of the spring and autumn operating modes of the present invention; Figure 4 This is a schematic diagram of the winter fog-eliminating operation mode of the present invention; Figure 5 This is a schematic diagram of the antifreeze mode of the present invention.

[0026] in: 1. Housing; 101. Mixing Chamber; 102. First Cavity; 103. Second Cavity; 104. Third Cavity; 2. Peak Louver; 3. Anti-freeze Louver; 4. Sedimentation Tank; 5. Medium Outlet; 6. Medium Inlet; 7. Regulating Valve I; 8. Water Supply Pipe; 9. Exhaust Fan; 10. Demisting Module; 11. Fresh Air Louver; 12. Partition; 13. Condensate Recovery Pan; 14. Water Collector; 15. Drag-reducing Louver; 16. Circulating Water Pump; 17. Circulating Water Tank; 18. Evaporator Coil; 19. Water Distribution Device; 20. Peak Device; 21. Regulating Valve II. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] As shown in the figure, a bottom-inlet, fog-eliminating, peak-type closed-loop condenser includes a housing 1, with a mixing chamber 101 located at the upper part of the inner cavity of the housing 1; an induced draft fan 9 is installed on the top of the housing 1. When the induced draft fan 9 is working, the air in the mixing chamber 101 can be drawn upward and discharged upward from the position of the induced draft fan 9.

[0029] The interior of the housing 1 is equipped with two connected defogging modules 10. Between the defogging module 10 and the side wall of the housing 1, there are a drag-reducing louver 15 and a water distribution device 19. The defogging module 10 is a defogging filler with a rhomboid cross-section, which extends from one end of the housing 1 to the other end. The axes of the two defogging modules 10 are arranged in parallel and are parallel to the bottom plane of the housing 1. One end of the rhomboid apex of each defogging module 10 is arranged downward. The close rhomboid apexes of the two defogging modules 10 are connected to each other. The defogging module 10 is made of PVC, fiberglass, aluminum alloy or stainless steel, etc., and has a cold air channel and a hot air channel that are respectively connected to the mixing chamber 101. Its internal structure and principle are conventional settings in the prior art and will not be described in detail here. A partition 12 is connected below the defogging module 10. The end of the partition 12 is fixed to the bottom of the housing 1. The height of the defogging module 10 can be increased through the partition 12, thereby increasing the overall height of the first cavity 102, the second cavity 103 and the third cavity 104. Two anti-fogging modules 10, drag-reducing louvers 15, and water distribution device 19 divide the lower cavity of the housing 1 into a first cavity 102, a second cavity 103, and a third cavity 104; a water collector 14 is provided above the drag-reducing louvers 15. The hot air channels of the two defogging modules 10 are respectively connected to the first cavity 102 and the second cavity 103; The cold air channels of the two defogging modules 10 are connected to the third cavity 104; An evaporator coil 18 is installed inside the first cavity 102 and the second cavity 103 and near the side wall of the housing 1. The two ends of the evaporator coil 18 are respectively provided with a medium inlet 6 and a medium outlet 5 extending to the outside of the housing 1. Water dripped from the water distribution device 19 can fall on the heat exchange wall surface of the evaporator coil 18. It also includes a peaking device 20, which is disposed inside the housing 1 and located directly above the water distribution device 19. The first cavity 102, the second cavity 103, the third cavity 104, and the spike device 20 are each equipped with an openable and closable ventilation assembly near the side wall of the housing 1. Specifically, the openable and closable ventilation assemblies are as follows: The spike louver 2 is located on the side wall of the housing 1 near the spike device 20. When the spike louver 2 is opened, air can enter the housing 1 through the spike louver 2, pass through the spike device 20 and enter the mixing chamber 101. The antifreeze louver 3 is located on the side wall of the housing 1 near the first cavity 102 and the second cavity 103. When the antifreeze louver 3 is opened, air can enter the first cavity 102 and the second cavity 103 respectively, and after passing through the evaporator coil 18, it enters the mixing chamber 101 through the hot air channel of the defogging module 10. When the drag-reducing louver 15 is opened at the same time, some air that has not passed through the defogging module 10 can directly enter the mixing chamber 101 through the drag-reducing louver 15. The new cold air louver 11 is located on the bottom wall of the housing 1 near the third cavity 104. It is configured so that air can enter the third cavity 104 from the new cold air louver 11 at the bottom, and then enter the mixing chamber 101 after passing through the cold air channel of the defogging module 10. Among them, the above three louvers and the drag-reducing louver 15 are any one of manual louvers, pneumatic louvers, and electric louvers.

[0030] The system also includes a water supply system, which includes a circulating water tank 17 installed at the bottom of the housing 1. A circulating water pump 16 is installed on the circulating water tank 17. The output end of the circulating water pump 16 is connected to a water inlet pipe 8. The water inlet pipe 8 is divided into two paths. One path is connected to a spray device located above the peak device 20 (wherein, the spray device is a combination structure of a water distribution plate above the peak device 20 and a gravity water distribution nozzle), which is used to spray water onto the peak device 20. The other path is connected to a water distribution device 19, which is used to sprinkle water droplets onto the evaporation coil 18 below. Each of the two water inlet pipes 8 is equipped with a regulating valve. In this example, the regulating valve of the water inlet pipe 8 connected to the spray device is regulating valve 7, and the regulating valve of the water inlet pipe 8 connected to the water distribution device 19 is regulating valve 21. The above-mentioned spray device and water distribution device 19 are conventional technologies used in heat exchange equipment in the prior art, and will not be described in detail here.

[0031] A sedimentation tank 4 is provided at the bottom of the circulating water tank 17. The sedimentation tank 4 is a submerged sedimentation tank 4. Specifically, a support frame is installed below the tank body 1, and the circulating water tank 17, the circulating water pump 16 and the sedimentation tank 4 are all located within the support frame.

[0032] A condensate recovery tray 13 is provided at the bottom of the box 1 where the first cavity 102 and the second cavity 103 are located. The condensate recovery tray 13 is connected to the circulating water tank 17. The condensate recovery tray 13 is connected to the circulating water tank 17 to collect the condensed water and introduce it into the circulating water tank 17 to achieve water saving effect.

[0033] Now combined Figure 1 , Figure 2 The energy-saving principle of the summer peak operation mode of this invention is explained as follows: During the summer peak operation mode, the peak louver 2, antifreeze louver 3, and drag-reducing louver 15 are open, while the fresh air louver 11 is closed; regulating valve 7 is open, and regulating valve 21 is closed. Under the action of the induced draft fan 9, the ambient air enters the peak device 20 through the peak louver 2 to cool the spray water. The cooled spray water falls to the water distribution device 19 of the evaporator coil 18 under the action of gravity. After secondary water distribution by the water distribution device 19, it drips onto the heat exchange wall surface of the evaporator coil 18. The lower spray water temperature improves the heat exchange efficiency of the evaporator coil 18, playing a role in peak reduction. At the same time, the ambient air enters the evaporator coil 18 through the antifreeze louver 3 for heat exchange. The humid and hot air after heat exchange then enters the mixing chamber 101 through the hot air channel of the diamond-shaped anti-fog packing, the drag-reducing louver 15, and the water collector 14. Finally, the humid and hot air is discharged into the atmosphere by the induced draft fan 9. During this process, the peak-shaving device 20 cools the spray water, thus reducing the peak temperature; the humid and hot air from the outlet of the evaporator coil 18 is discharged into the atmosphere through the drag-reducing louver 15, which reduces the overall air resistance and saves energy; the humid and hot air from the outlet of the evaporator coil 18 is discharged into the atmosphere through the hot air channel of the diamond-shaped defogging module 10, which collects water.

[0034] Now combined Figure 1 , Figure 3The water-saving and energy-saving principles of the present invention under the spring and autumn operation mode are explained as follows: During the spring and autumn operation mode, the ambient temperature is low, and the evaporator coil 18 alone can meet the heat exchange requirements. The peak louver 2 is closed, while the antifreeze louver 3 and the drag-reducing louver 15 are open, and the fresh air louver 11 is closed; regulating valve 7 is closed, and regulating valve 21 is open. Under the action of the induced draft fan 9, all ambient air enters the evaporator coil 18 through the antifreeze louver 3 for heat exchange. The humid air after heat exchange then enters the mixing chamber 101 through the hot air channel of the diamond-shaped defogging module 10, the drag-reducing louver 15, and the water collector 14. Finally, the humid air is discharged into the atmosphere by the induced draft fan 9. During this process, a portion of the hot and humid air from the outlet of the evaporator coil 18 is discharged into the atmosphere through the drag-reducing louver 15, which reduces the overall air resistance and saves energy. A portion of the hot and humid air from the outlet of the evaporator coil 18 is discharged into the atmosphere through the hot air channel of the diamond-shaped defogging module 10, which collects water. At the same time, due to the closure of the peak louver 2 and the regulating valve 7, the peak device 20 is in a shutdown state and has no heat exchange task, thus avoiding the waste of a large amount of air and the evaporation consumption of spray water, achieving the purpose of water saving and energy saving.

[0035] Now combined Figure 1 , Figure 4 The defogging principle of the present invention under the winter defogging operation mode is explained as follows: In the winter defogging operation mode, the ambient temperature is low, and white fog is easily generated. Peak louvers 2 are closed, antifreeze louvers 3 are open, drag-reducing louvers 15 are closed, and fresh cold air louvers 11 are open; regulating valve 7 is closed, and regulating valve 21 is open. Due to the low ambient temperature, the air volume required for evaporative heat exchange is small, and the fan head of the equipment can meet the heat exchange requirements. At this time, all the hot and humid air at the outlet of the evaporator coil 18 flows through the hot air channel of the diamond-shaped defogging packing. The excess fan head provides power to introduce fresh cold air from the environment through the fresh cold air louvers 11 at the bottom of the equipment. The fresh cold air undergoes indirect heat exchange with the hot and humid air in the hot air channel of the diamond-shaped defogging packing through the cold air channel. The hot and humid air in the hot air channel of the diamond-shaped defogging packing is condensed, and condensate is released. The condensate falls back to the condensate recovery pan 13 and, under gravity, flows back to the circulating water tank 17 for secondary use, thereby achieving water saving. The humid air and fresh cold air that have undergone heat exchange through the diamond-shaped defogging packing are mixed in the mixing chamber 101 by the equipment's induced draft fan 9. Compared to the nearly saturated humid air at the outlet of the evaporator coil 18, the mixed humid air has a lower moisture content, lower relative humidity, and lower temperature, and is further away from the 100% relative humidity line. When it is discharged into the atmosphere and comes into contact with the low-temperature ambient air, it is less likely to produce white fog.

[0036] Now combined Figure 1 , Figure 5The antifreeze mode of this invention is described as follows: In this mode, the peak louvers 2, antifreeze louvers 3, drag-reducing louvers 15, and fresh air louvers 11 are closed; the induced draft fan 9 and circulating water pump 16 are closed, and the spray water in the circulating water tank 17 is drained. The equipment can be disconnected from the system via a bypass, in which case the medium inside the equipment should be drained; the medium can also flow through the evaporator coil 18, and the equipment participates in system operation. Because the relevant louvers are closed, the induced draft fan 9 will not generate suction, and the medium in the evaporator coil 18 retains heat, forming a warm chamber inside the equipment, which is beneficial for antifreeze protection.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bottom-inlet, fog-eliminating, peak-type closed-loop condenser cooler, characterized in that, Includes a housing, with a mixing chamber located in the upper part of the inner cavity of the housing; The interior of the enclosure is equipped with two connected anti-fogging modules. Between the anti-fogging modules and the side wall of the enclosure, there are drag-reducing louvers and a water distribution device. The two anti-fogging modules, drag-reducing louvers and water distribution device divide the lower cavity of the enclosure into a first cavity, a second cavity and a third cavity. The defogging module has a cold air passage and a hot air passage that are respectively connected to the mixing chamber; The hot air channels of the two defogging modules are connected to the first cavity and the second cavity, respectively; The cold air channels of the two defogging modules are connected to the third cavity; Evaporation coils are installed inside the first and second cavities and near the side wall of the box. Water dripping from the water distribution device can fall onto the heat exchange wall of the evaporation coils. It also includes a peaking device, which is located inside the chamber of the tank and directly above the water distribution device; The first cavity, the second cavity, the third cavity, and the spike device are each equipped with an openable and closable ventilation component near the side wall of the enclosure. It also includes a water supply system, which includes a circulating water tank installed at the bottom of the tank. A circulating water pump is installed on the circulating water tank. The output end of the circulating water pump is connected to a water inlet pipe. The water inlet pipe is divided into two lines. One line is connected to a spray device above the peak device, which is set to spray water onto the peak device. The other line is connected to a water distribution device, which is set to sprinkle water droplets onto the evaporation coil below. Each of the two water inlet pipes is equipped with a regulating valve.

2. A bottom-inlet, fog-eliminating, peak-type closed-loop condenser cooler according to claim 1, characterized in that, A sedimentation tank is installed at the bottom of the circulating water tank.

3. A bottom-inlet, fog-eliminating, peak-type closed-loop condenser cooler according to claim 1, characterized in that, A condensate recovery tray is located at the bottom of the box containing the first and second cavities, and the condensate recovery tray is connected to the circulating water tank.

4. A bottom-inlet, fog-eliminating, peak-type closed-loop condenser cooler according to claim 1, characterized in that, The evaporator coil has a medium inlet and a medium outlet extending to the outside of the housing at both ends.

5. A bottom-inlet, fog-eliminating, peak-type closed-loop condenser cooler according to claim 1, characterized in that, A water collector is installed above the drag-reducing louvers.

6. A bottom-inlet, fog-eliminating, peak-type closed-loop condenser cooler according to claim 1, characterized in that, The defogging module has a rhomboid cross-section, with a partition connected below it. The end of the partition is fixed to the bottom of the box.

7. A bottom-inlet, fog-eliminating, peak-type closed-loop condenser cooler according to claim 1, characterized in that, An exhaust fan is installed on the top of the enclosure.

8. A bottom-inlet, fog-eliminating, peak-type closed-loop condenser cooler according to claim 1, characterized in that, The openable and closable ventilation components are as follows: The spike louvers are located on the side wall of the enclosure near the spike device. Anti-freeze louvers are installed on the side wall of the housing near the first and second cavities; The new cold air louvers are located on the bottom wall of the housing near the third cavity; Among them, the three types of louvers and the drag-reducing louvers are any one of manual louvers, pneumatic louvers, and electric louvers.

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