Counter-flow fog dissipation peak wet air cooler

Abstract

The invention provides a reverse flow type fog dissipation peak wet air cooler which comprises a box body, an evaporation coil pipe and a peak device are arranged in the box body, and the evaporation coil pipe and the peak device are arranged in a mutually isolated mode through a flow dividing partition plate arranged in the box body; a rhombic fog dissipation filler is arranged above the inner cavity of the box body, and a hot air channel of the rhombic fog dissipation filler is communicated with a cavity where the evaporation coil is located; a cold air channel of the rhombic fog dissipation filler is communicated with the cavity where the peak device is located, and the cold air channel is not communicated with or partially communicated with the cavity where the evaporation coil is located; through the synergistic effect of the counter-flow peak device and the evaporation coil, the heat exchange efficiency is remarkably improved in the high-temperature or load peak period, stable operation of the system is guaranteed, efficiency reduction caused by insufficient cooling is avoided, the rhombic fog dispersal filler and multi-channel airflow mixing design is adopted, wet and hot air and cold air are fully mixed for cooling, the relative humidity is reduced, and the energy consumption is reduced. Generation of rime fog is effectively inhibited, and environmental pollution and visual potential safety hazards are reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of heat exchange equipment, specifically relating to a counter-flow defogging peak wet air cooler. Background Technology

[0002] Wet air coolers, as common heat exchange equipment in industrial fields, are widely used in circulating water cooling scenarios in industries such as power and chemicals. Their working principle involves direct contact between sprayed water and air, resulting in evaporative heat exchange and efficient cooling of the process medium. However, existing wet air coolers have revealed several problems in practical applications. Specifically: First, under high-temperature conditions or peak load periods, the heat exchange capacity of traditional wet air coolers is significantly insufficient, making it difficult to meet peak cooling demands. This directly leads to a decrease in cooling efficiency, thus affecting the stable operation of the entire system. Second, during operation, the humid, hot air generated by the contact between sprayed water and air is easily released into the atmosphere and mixes with the low-temperature air in the environment, forming a white mist. This not only reduces visibility in the surrounding environment but may also cause visual pollution and safety hazards. Furthermore, the equipment suffers from other problems: high wind resistance increases energy consumption; water dispersion wastes water resources; and freezing of the heat exchange medium in low-temperature environments can damage the equipment. These problems restrict the performance improvement and application expansion of existing wet air coolers. Summary of the Invention

[0003] This invention provides a counter-flow defogging peak wet air cooler to solve the problems mentioned in the background art, such as insufficient heat exchange capacity under peak conditions, easy formation of white mist from wet and hot exhaust gas, high operating resistance and high energy consumption, and risk of icing damage under low temperature conditions.

[0004] The technical solution adopted in this invention is: a counter-flow defogging peak wet air cooler, including a housing, an evaporator coil and a peak device are provided inside the housing, and the evaporator coil and the peak device are isolated from each other by a flow divider plate set inside the housing;

[0005] The upper part of the inner cavity of the box is equipped with diamond-shaped anti-fogging filler. The hot air channel of the diamond-shaped anti-fogging filler is connected to the cavity where the evaporator coil is located. The cold air channel of the diamond-shaped anti-fogging filler is connected to the cavity where the peak device is located. The cold air channel and the cavity where the evaporator coil is located are either not connected or partially connected.

[0006] A mixing chamber is located at the top of the inner cavity of the box, and a drag-reducing louver is provided between the mixing chamber and the cavity where the evaporator coil is located.

[0007] The cavity formed by the spike device and the diamond-shaped anti-fog packing is equipped with spike louvers.

[0008] It also includes a water collector, which is located above the evaporator coil and the peaking device.

[0009] The bottom of the enclosure is equipped with a hot water tank and a cold water tank. The hot water tank and the cold water tank are separated by an overflow baffle installed at the bottom of the enclosure. The hot water tank is used to collect the hot water falling from the evaporator coil, and the cold water tank is used to collect the cold water falling from the peak device.

[0010] It also includes an evaporator coil spray device and a peak spray device. The evaporator coil spray device is used to transport and spray cold water from the cold water tank onto the evaporator coil, and the peak spray device is used to transport and spray hot water from the hot water tank onto the peak device.

[0011] The bottom of the inner cavity of the box is provided with a first chamber, and the side wall of the box where the first chamber is located is provided with antifreeze louvers. When the antifreeze louvers are opened, outside air can pass through the first chamber and pass through the evaporator coil and the peak device respectively.

[0012] A second chamber is formed between the diamond-shaped anti-fog filler, the diversion baffle, the water collector, and the box body. The side wall of the box body where the second chamber is located is equipped with a make-up air louver.

[0013] An exhaust fan is installed on the top of the enclosure.

[0014] A third chamber is formed above the evaporator coil, and the third chamber is connected to the hot air channel of the diamond-shaped anti-fogging packing.

[0015] The drag-reducing louvers are located inside the housing between the third chamber and the mixing chamber.

[0016] When the cold air channel of the diamond-shaped anti-fogging packing is partially connected to the cavity where the evaporator coil is located, an airflow distribution louver is installed in the box between the diamond-shaped anti-fogging packing and the evaporator coil.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. Enhanced peak cooling capacity: Through the synergistic effect of the counter-flow peak cooling device and the evaporator coil, the heat exchange efficiency is significantly improved during high temperature or peak load periods, ensuring stable system operation and avoiding efficiency decline due to insufficient cooling.

[0019] 2. High-efficiency defogging: The diamond-shaped defogging filler and multi-channel airflow mixing design fully mix hot and humid air with cold air to cool it down, reduce relative humidity, effectively suppress the formation of white fog, and reduce environmental pollution and visual safety hazards.

[0020] 3. Energy saving and consumption reduction: The drag-reducing louvers optimize the air duct structure, reduce system air resistance, and reduce the energy consumption of the exhaust fan; in energy-saving mode, peak-load devices are shut down, further reducing operating costs.

[0021] 4. Water-saving and environmentally friendly: The water collector recovers scattered water, and the condensate in the defogging mode is recycled and reused, significantly improving the water resource utilization rate.

[0022] 5. Anti-freeze protection: In anti-freeze mode, the closed structure and the medium's self-insulating mechanism prevent low-temperature freezing damage to the equipment, extend its service life, and reduce maintenance costs.

[0023] 6. Flexible adaptability: Various modified structures (such as component simplification, alternating layout, and optimized airflow distribution) can meet the needs of different working conditions, have a wide range of applications, and have high engineering practical value.

[0024] 7. Multifunctional integration: A single device integrates four major functions: peak cooling, defogging, energy saving, and antifreeze, reducing system complexity and lowering overall investment and floor space costs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of Embodiment 4 of the present invention;

[0029] Figure 5 This is a structural schematic diagram of Embodiment 5 of the present invention.

[0030] in:

[0031] 1. Housing; 101. First Chamber; 102. Second Chamber; 103. Third Chamber; 2. Exhaust Fan; 3. Evaporator Coil; 4. Mixing Chamber; 5. Drag-reducing Louvers; 6. Diamond-shaped Anti-fogging Packing; 7. Peak Spray Device; 8. Peak Spray Device; 9. Evaporator Coil Spray Device; 10. Peak Louvers; 11. Anti-freeze Louvers; 12. Water Collector; 13. Hot Water Tank; 14. Cold Water Tank; 15. Overflow Baffle; 16. Makeup Air Louvers; 17. Diversion Baffle; 18. Airflow Distribution Louvers. Detailed Implementation

[0032] 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.

[0033] Example 1

[0034] like Figure 1As shown, a counter-flow defogging peak wet air cooler includes a housing 1. The housing 1 contains an evaporator coil 3 and a peaking device 7. The evaporator coil 3 and the peaking device 7 are isolated from each other by a flow divider 17 located inside the housing 1. In this example, there is one set of evaporator coil 3 installed in the middle of the housing 1, and two sets of peaking devices 7, respectively located on both sides of the evaporator coil 3. There are two flow dividers 17, with their upper ends extending upwards above the peaking device 7 and the evaporator coil 3. The peaking device 7 is a counter-flow packing structure used to form a counter-current contact with the upward-flowing air, allowing the sprayed water to form a water film on the packing surface and fully exchange heat with the air to reduce the water temperature.

[0035] A rhomboid anti-fogging filler 6 is provided at the upper part of the inner cavity of the box 1. In this example, there are two sets of rhomboid anti-fogging filler 6. The cross-sectional shape of the rhomboid anti-fogging filler 6 is square or rhomboid. The two diagonals on the cross-section of the rhomboid anti-fogging filler 6 are arranged along the horizontal and vertical directions, respectively. The lower end of the rhomboid anti-fogging filler 6 is connected to the diversion baffle 17, the outer edge is connected to the side wall of the box 1, and the inner edge is connected to the drag-reducing louver 5. The hot air channel of the rhomboid anti-fogging filler 6 is connected to the cavity where the evaporator coil 3 is located; the cold air channel of the rhomboid anti-fogging filler 6 is connected to the cavity where the peak device 7 is located, and the cold air channel is not connected to the cavity where the evaporator coil 3 is located; a mixing chamber 4 is provided above the inner cavity of the housing 1, and the mixing chamber 4 is specifically formed in the inner cavity of the housing 1 above the two rhomboid anti-fogging fillers 6 and the drag-reducing louvers 5. A drag-reducing louver 5 is provided between the mixing chamber 4 and the cavity where the evaporator coil 3 is located. Specifically, a third chamber 103 is formed above the evaporator coil 3, and the third chamber 103 is connected to the hot air channel of the rhomboid anti-fogging filler 6. The drag-reducing louver 5 is specifically set inside the housing 1 between the third chamber 103 and the mixing chamber 4.

[0036] A pointed louver 10 is provided in the cavity formed by the pointed device 7 and the diamond-shaped anti-fogging packing 6. The pointed louver 10 is used to control the opening and closing of the air passage between the pointed device 7 and the diamond-shaped anti-fogging packing 6. More specifically, a second chamber 102 is formed between the diamond-shaped anti-fogging packing 6, the diversion baffle 17, the water collector 12 and the housing 1. A makeup air louver 16 is installed on the side wall of the housing 1 where the second chamber 102 is located, so that outside air can enter the second chamber 102 through the makeup air louver 16.

[0037] It also includes a water collector 12, which is located above the evaporator coil 3 and the peak device 7, and is used to achieve the water collection effect.

[0038] The bottom of the housing 1 is equipped with a hot water pool 13 and a cold water pool 14. The hot water pool 13 and the cold water pool 14 are isolated by an overflow baffle 15 installed at the bottom of the housing 1. While the overflow baffle 15 isolates the hot water pool 13 and the cold water pool 14 from each other, it can also overflow into the other pool when there is too much water in one pool. This allows the staff to observe the overflow phenomenon between the hot and cold water pools through the anti-freeze louvers 11. If an overflow occurs, it indicates that the equipment has malfunctioned, such as nozzle blockage or pipe blockage, and needs to be inspected and cleaned. This can serve as an early warning.

[0039] Hot water tank 13 is used to collect hot water flowing down from evaporator coil 3, and cold water tank 14 is used to collect cold water flowing down from peak spray device 7. In addition, it includes evaporator coil spray device 9 and peak spray device 8. Evaporator coil spray device 9 is used to transport and spray cold water from cold water tank 14 onto evaporator coil 3, and peak spray device 8 is used to transport and spray hot water from hot water tank 13 onto peak spray device 7. Both spray devices include their own independently installed water pumps, water pipes, and nozzles. The nozzles are positioned above evaporator coil 3 and peak spray device 7, mainly for achieving the spraying effect.

[0040] The bottom of the inner cavity of the box 1 is provided with a first chamber 101. The side wall of the box 1 where the first chamber 101 is located is provided with an antifreeze louver 11. When the antifreeze louver 11 is opened, outside air can pass through the first chamber 101 and pass through the evaporator coil 3 and the peak device 7 respectively. The antifreeze louver 11 is specifically located on the side wall of the box 1 above the hot water pool 13 and the cold water pool 14.

[0041] The top of the housing 1 is equipped with an exhaust fan 2, which is used to circulate air within the air cooler by exhausting air.

[0042] Now combined Figure 1The peak operation mode of the present invention is described as follows: In peak mode, the antifreeze louvers 11, peak louvers 10, and drag-reducing louvers 5 are all open. Under the action of the induced draft fan 2, fresh air enters the first chamber 101 through the antifreeze louvers 11 and is divided into two paths. One path enters the evaporator coil 3 and exchanges heat with the evaporator coil 3 through the wall. The humid air after heat exchange enters the third chamber 103 through the water collector 12. Due to the obstruction of the diversion baffle 17 and the opening of the drag-reducing louvers 5, the humid air is divided into two paths again. One path enters the mixing chamber 4 through the hot air channel of the diamond-shaped anti-fog packing 6, and the other path directly enters the mixing chamber 4 through the drag-reducing louvers 5. The other fresh air enters the counter-flow peak device 7 and exchanges heat with the spray water. The humid air after heat exchange enters the mixing chamber 4 through the water collector 12, the second chamber 102, and the cold air channel of the diamond-shaped anti-fog packing 6, and is finally discharged into the atmosphere by the induced draft fan 2. The spray water undergoes heat exchange with the evaporator coil 3, causing its temperature to rise. Under the influence of gravity, it falls into the hot water tank 13. The peak spray device 8 transports the hot water in the hot water tank 13 to the peak device 7. After being cooled by the peak device 7, the spray water falls into the cold water tank 14. The evaporator coil spray device 9 transports the cold water in the cold water tank 14 to the evaporator coil 3 for heat exchange, and so on.

[0043] Now combined Figure 1 The energy-saving operation mode of the present invention is explained as follows: When the ambient temperature is low and peak operation is not required, the energy-saving mode is executed. The anti-freeze louvers 11 and the drag-reducing louvers 5 are opened, while the peak operation louvers 10 and the air supply louvers 16 are closed. Under the action of the induced draft fan 2, fresh air enters the first chamber 101 through the anti-freeze louvers 11, and then enters the evaporator coil 3 to exchange heat with the evaporator coil 3. The humid air after heat exchange enters the third chamber 103 through the water collector 12. Due to the obstruction of the diversion baffle 17 and the opening of the drag-reducing louvers 5, the humid air is divided into two paths. One path enters the mixing chamber 4 through the hot air channel of the diamond-shaped anti-fog packing 6, and the other path directly enters the mixing chamber 4 through the drag-reducing louvers 5 and is finally discharged into the atmosphere by the induced draft fan 2. Due to the opening of the drag-reducing louvers 5, the pressure of the whole equipment is reduced and the operating energy consumption is low. When the counter-current peak-spraying device 7 and peak-spraying device 8 are in a stopped state, the spray water undergoes indirect heat exchange with the evaporator coil 3, causing its temperature to rise. Under the influence of gravity, it falls into the hot water tank 13. The evaporator coil spraying device 9 then transports the spray water from the cold water tank 14 to the evaporator coil 3 for indirect heat exchange, and this cycle continues. Because the counter-current peak-spraying device 7 is in a stopped state, its evaporation rate is reduced to zero, making the equipment more water-efficient.

[0044] Now combined Figure 1The defogging operation mode of this invention is explained as follows: When the ambient temperature further decreases, and the humid and hot air at the outlet of the induced draft fan 2 mixes with the low-temperature ambient air to form white fog, the defogging mode is activated. The counter-current peak device 7 and the peak spray device 8 are shut down, the anti-freeze louvers 11, the peak louvers 10, and the air supply louvers 16 are opened, and the drag-reducing louvers 5 are closed. Under the action of the induced draft fan 2, the fresh air is divided into three paths. One path enters the evaporator coil 3 and exchanges heat with the evaporator coil 3 through the wall. The humid and hot air after heat exchange... Air enters the third chamber 103 via the water collector 12. Due to the obstruction of the diversion baffle 17 and the closure of the drag-reducing louvers 5, the humid and hot air can only enter the mixing chamber 4 through the hot air passage of the diamond-shaped anti-fogging packing 6. Another stream of fresh air enters the counter-flow peaking device 7, which only serves as a fresh air passage and does not perform heat exchange. The fresh air then enters the cold air passage of the diamond-shaped anti-fogging packing 6 from the second chamber 102, and another stream of fresh air enters the cold air passage of the diamond-shaped anti-fogging packing 6 through the make-up air louvers 16. The fresh air and the humid heat at the outlet of the evaporator coil 3 undergo indirect heat exchange in the diamond-shaped anti-fogging packing 6. The humid and hot air in the hot air passage is condensed, and condensate is released. The condensate falls back to the evaporator coil 3 for heat exchange again and is reused. The humid air and fresh cold air that have undergone heat exchange through the inter-wall of the diamond-shaped defogging packing 6 are mixed in the mixing chamber 4 under the action of the induced draft fan 2. Compared with the original nearly saturated humid air at the outlet of the evaporator coil 3, 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.

[0045] Now combined Figure 1 The antifreeze mode of the present invention is explained as follows: When the ambient temperature drops further and the heat exchange equipment is no longer needed to cool the medium, the antifreeze mode is executed. At this time, the antifreeze louvers 11, the drag-reducing louvers 5, the peak louvers 10, and the air supply louvers 16 are all closed, and the induced draft fan 2, the peak spray device 8, and the evaporator coil spray device 9 are all shut down. Since all the louvers are closed, the induced draft fan 2 will not generate suction, and the medium in the evaporator coil 3 retains heat, forming a natural warm room inside the equipment, which is beneficial for the equipment to prevent freezing.

[0046] Example 2

[0047] like Figure 2 As shown, the only difference between this embodiment and the first embodiment above is that: in this example, the spike device 7, the diamond-shaped defogging packing 6, the cold water pool 14, the spike louver 10, and the air supply louver 16 are all installed on the housing 1. The evaporator coil 3 and the spike device 7 are respectively arranged on both sides inside the housing 1. Under this structure, the different operating modes described in the first embodiment above can also be realized.

[0048] Example 3

[0049] like Figure 3As shown, the only difference between this embodiment and the first embodiment above is that: in this example, three exhaust fans 2 are set on the top of the box 1 (it is understood that different numbers of exhaust fans 2 can be designed according to the needs), and multiple spaces are separated inside the box 1 by the diversion baffle 17, so that the peak device 7 and the evaporation coil 3 are each provided with different numbers, which can also realize the different operating modes described in the first embodiment above.

[0050] Example 4

[0051] like Figure 4 As shown, the only difference between this embodiment and the above embodiment three is that in this example, multiple diamond-shaped anti-fog fillers 6 are connected end to end in the box 1, and the drag-reducing louvers 5 are no longer provided.

[0052] Example 5

[0053] like Figure 5 As shown, the difference between this embodiment and the above embodiment two is only that: in this example, the cold air channel of the rhomboid anti-fogging packing 6 is partially connected to the cavity where the evaporator coil 3 is located, and an airflow distribution louver 18 is installed in the box 1 between the rhomboid anti-fogging packing 6 and the evaporator coil 3. In the non-anti-fogging operation mode, the humid and hot air rising from the evaporator coil 3 is allowed to enter the cold air channel of the rhomboid anti-fogging packing 6, which can also achieve the different operation modes described in embodiment one.

[0054] 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 counter-flow defogging peak wet air cooler, characterized in that, Includes a housing (1), inside which are provided an evaporator coil (3) and a peaking device (7), the evaporator coil (3) and the peaking device (7) are isolated from each other by a flow divider (17) provided inside the housing (1); The upper part of the inner cavity of the box (1) is provided with a diamond-shaped anti-fogging filler (6). The hot air channel of the diamond-shaped anti-fogging filler (6) is connected to the cavity where the evaporator coil (3) is located. The cold air channel of the diamond-shaped anti-fogging filler (6) is connected to the cavity where the peak device (7) is located. The cold air channel and the cavity where the evaporator coil (3) is located are either not connected or partially connected. A mixing chamber (4) is provided at the upper part of the inner cavity of the box (1), and a drag-reducing louver (5) is provided between the mixing chamber (4) and the cavity where the evaporator coil (3) is located. The cavity formed by the spike device (7) and the rhomboid anti-fog packing (6) is provided with spike louvers (10).

2. The counter-flow defogging peak wet air cooler according to claim 1, characterized in that, It also includes a water collector (12), which is located above the evaporator coil (3) and the peaking device (7).

3. A counter-flow defogging peak wet air cooler according to claim 1, characterized in that, The bottom of the box (1) is provided with a hot water pool (13) and a cold water pool (14). The hot water pool (13) and the cold water pool (14) are separated by an overflow baffle (15) installed at the bottom of the box (1). The hot water pool (13) is used to collect the hot water falling from the evaporator coil (3), and the cold water pool (14) is used to collect the cold water falling from the peak device (7).

4. A counter-flow defogging peak wet air cooler according to claim 3, characterized in that, It also includes an evaporator coil spray device (9) and a peak spray device (8). The evaporator coil spray device (9) is used to transport and spray cold water from the cold water tank (14) to the evaporator coil (3), and the peak spray device (8) is used to transport and spray hot water from the hot water tank (13) to the peak device (7).

5. A counter-flow defogging peak wet air cooler according to claim 1, characterized in that, The bottom of the inner cavity of the box (1) is provided with a first chamber (101). The side wall of the box (1) where the first chamber (101) is located is provided with an antifreeze louver (11). When the antifreeze louver (11) is opened, outside air can pass through the first chamber (101) and pass through the evaporator coil (3) and the spike device (7) respectively.

6. A counter-flow defogging peak wet air cooler according to claim 2, characterized in that, A second chamber (102) is formed between the diamond-shaped anti-fog packing (6), the diversion baffle (17), the water collector (12) and the box (1). The side wall of the box (1) where the second chamber (102) is located is equipped with a make-up air louver (16).

7. A counter-flow defogging peak wet air cooler according to claim 1, characterized in that, A blower (2) is installed on the top of the housing (1).

8. A counter-flow defogging peak wet air cooler according to claim 1, characterized in that, A third chamber (103) is formed above the evaporator coil (3), and the third chamber (103) is connected to the hot air channel of the rhomboid anti-fog packing (6).

9. A counter-flow defogging peak wet air cooler according to claim 8, characterized in that, The drag-reducing louver (5) is located inside the box (1) between the third chamber (103) and the mixing chamber (4).

10. A counter-flow defogging peak wet air cooler according to claim 1, characterized in that, When the cold air channel of the rhomboid defogging filler (6) is partially connected to the cavity where the evaporator coil (3) is located, an airflow distribution louver (18) is installed in the box (1) between the rhomboid defogging filler (6) and the evaporator coil (3).

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