Peak closed type condensation cooler with bottom air inlet and fog dissipation functions

Abstract

The peak closed type condensation cooler comprises a box body, and an air mixing chamber is arranged on the upper portion of an inner cavity of the box body; two connected fog dispersal modules are arranged in the box body, a resistance reducing shutter and a water distribution device are sequentially arranged between the fog dispersal modules and the side wall of the box body, and the two fog dispersal modules, the resistance reducing shutter and the water distribution device divide a lower cavity of the box body into a first cavity, a second cavity and a third cavity; the fog dispersal module is provided with a cold air channel and a hot air channel which communicate with the air mixing chamber. Through the structural design of bottom air inlet, the sufficient fresh air introduction area can be achieved on the premise that the height of equipment is not increased, then the air path resistance is reduced, the fan operation pressure head and energy consumption are reduced, and the overall energy-saving performance of the equipment is improved. Meanwhile, on the premise that the vertical size of the equipment is not increased, the lift requirement of the spraying water pump is reduced, the energy consumption and the operation burden of the water pump are reduced, and the operation economical efficiency and the structure compactness of the whole equipment are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of heat exchange, and in particular relates to a peak closed condensing cooler with bottom air inlet and mist elimination. Background Art

[0002] As an efficient heat exchange device, the evaporative condensing cooler works mainly based on the evaporative heat absorption of the spray water and the convection heat transfer of the air. The specific process is as follows: A spray system is installed on top of the evaporative condenser. A circulating water pump pumps water from a water tank into the spray system. Under the influence of gravity, the spray water is sprayed through nozzles onto the outer surface of the coil, forming a film of water. When the fan is running, it draws air into the equipment. This air exchanges heat with the film of water on the outer surface of the coil. During this process, some of the water in the film evaporates into water vapor, which absorbs heat from the medium inside the coil. The evaporated water vapor is then discharged from the equipment along with the air. This entire heat exchange process consumes a significant amount of spray water.

[0003] When the ambient temperature is low, the nearly saturated hot and humid air at the outlet of the evaporative condensation cooler comes into contact with the low-temperature ambient air, condenses, and precipitates small water droplets, producing white mist.

[0004] The existing defogging device is to add a diamond-shaped defogging module on the upper part of the device, which has the following disadvantages: During summer operation, the diamond-shaped mist elimination 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] During winter defogging, for large equipment with heat exchange components arranged back to back and sharing a common fan, the existing defogging method can only introduce new cold air from the end. Affected by the end air inlet structure, the air inlet area is small and the wind 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, since the end of the equipment is occupied, new cold air cannot be introduced and the defogging function cannot be realized. Summary of the Invention

[0006] The present invention provides a peak closed condensing cooler with bottom air inlet and demisting function, which is used to solve the problem proposed in the above background technology that the demisting module of the existing condensing cooler will increase the wind resistance of the equipment and increase energy consumption when operating in summer, and the air inlet area is limited and the wind pressure is uneven when operating in winter, especially in the scenario where the equipment is arranged in a row, the cold air cannot be effectively introduced, resulting in the failure of the demisting function.

[0007] The technical solution adopted by the present invention is: a peak closed condensing cooler with bottom air inlet and mist elimination, comprising a box body, wherein an air mixing chamber is provided at the upper position of the inner cavity of the box body; Two connected demisting modules are provided inside the box, and resistance-reducing louvers and water distribution devices are provided in sequence between the demisting modules and the side walls of the box. The two demisting modules, resistance-reducing louvers and water distribution devices divide the lower cavity of the box into a first cavity, a second cavity and a third cavity; The mist elimination module has a cold air channel and a hot air channel respectively connected to the air mixing chamber; The hot air channels of the two mist elimination modules are respectively connected to the first cavity and the second cavity; The cold air passages of the two mist elimination modules are connected to the third cavity; An evaporation coil is installed inside the first cavity and the second cavity and near the side wall of the box body, and water dripping from the water distribution device can fall on the heat exchange wall surface of the evaporation coil; It also includes a spike device, which is arranged in the inner cavity of the box and is located directly above the water distribution device; Among them, the first cavity, the second cavity, the third cavity and the peak device are respectively provided with openable and closable ventilation components at positions close to the side walls of the box.

[0008] The present invention also includes a water supply system, which includes a circulating water tank installed at the bottom of the box body, a circulating water pump installed on the circulating water tank, and an upper water pipe connected to the output end of the circulating water pump. The upper water pipe is divided into two routes, one of which is connected to the spraying device above the spike device and is configured to spray water on the spike device, and the other is connected to the water distribution device and is configured to allow water droplets to be sprinkled on the evaporation coil below. Regulating valves are respectively installed on the two water pipes.

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

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

[0011] Both ends of the evaporating coil are respectively provided with a medium inlet and a medium outlet extending to the outside of the box.

[0012] A water collector is provided above the resistance-reducing louver.

[0013] The cross section of the mist elimination module is a diamond structure, with a partition connected to the bottom thereof, and the end of the partition is fixed to the bottom of the box.

[0014] An induced draft fan is installed on the top of the box.

[0015] The ventilation components that can be opened and closed are: a peak shutter, which is arranged on the side wall of the box near the peak device; Antifreeze shutters are arranged on the side walls of the box body near the first cavity and the second cavity; A new cold air louver is provided on the bottom wall of the box body near the third cavity; Among them, the above three shutters and the resistance reduction shutter are any one of manual shutters, pneumatic shutters, and electric shutters.

[0016] The beneficial effects of the present invention are: 1. The present invention sets up an independent peak device and configures peak shutters. When the device is activated under high-temperature peak conditions in summer, the spray cooling capacity per unit time can be enhanced, the heat exchange capacity of the equipment can be effectively improved, and the system can be ensured to have good stability under high-load operating conditions, so as to ensure that the equipment can run smoothly in summer.

[0017] 2. The present invention provides a diamond-shaped defogging filler and a bottom air inlet structure. In the winter defogging operation mode, the hot and humid air at the outlet of the evaporating coil is first condensed and cooled in the defogging filler, and then mixed with the low-temperature fresh air introduced from the bottom in the air mixing chamber, so that the temperature and humidity of the exhaust air flow are significantly reduced, thereby reducing the risk of white fog formation and achieving efficient defogging.

[0018] 3. The present invention's bottom-inlet design ensures sufficient fresh air intake without increasing the height of the equipment, thereby reducing wind resistance, lowering fan operating pressure and energy consumption, and improving the overall energy efficiency of the equipment. Furthermore, without increasing the vertical dimensions of the equipment, the required head of the sprinkler pump is reduced, reducing the pump's energy consumption and operating burden, thereby improving the overall operating economy and structural compactness of the equipment.

[0019] 4. The present invention can flexibly switch the operating mode according to seasonal load changes through the parallel configuration of the peak device and the evaporation coil. In the non-peak season, the peak device can be completely disabled and no longer participates in spraying and heat exchange, avoiding unnecessary consumption of spray water; at the same time, during the demisting operation, the condensed water is recycled to the circulating water tank for a second time, realizing closed-loop water utilization, significantly reducing the overall water consumption, and having a good water-saving effect.

[0020] 5. The present invention adopts a fully closed control design through various types of shutters. Under extremely low temperature conditions, all air outlets can be completely closed, so that the induced draft fan no longer draws air, and the heat inside the equipment remains in a closed state, forming a "warm room" effect, preventing the medium in the pipe from freezing. It has good anti-freeze ability and ensures that the equipment can survive the winter stably.

[0021] 6. The present invention sets various types of shutters (such as peak shutters, anti-freeze shutters, resistance reduction shutters, and new cold air shutters) as adjustable opening structures and supports manual, pneumatic or electric control, so that the system can flexibly adjust the direction and distribution of air volume, and can achieve good heat exchange effects in different operating modes, further improving heat exchange efficiency.

[0022] 7. The present invention sets the peak device as an independent module and allows maintenance in an out-of-use state, so that it can be cleaned and repaired in the non-peak season without the need for overall shutdown, ensuring the continuity of production operation, high maintenance efficiency, small impact range, and enhancing the maintainability and reliability of the equipment.

[0023] 8. The present invention provides a special dirt accumulation space by setting up a sunken sedimentation tank structure, which is convenient for regular centralized sewage discharge and keeps the water quality clean. At the same time, the sunken structure increases the liquid level height of the circulating water pump suction port, effectively reduces the risk of pump cavitation, extends the service life of the water pump, and can reduce the overall operating weight of the equipment and optimize the structural strength design.

[0024] 9. Through functional integration and structural optimization design, the present invention realizes the integrated operation of multiple working conditions such as peak operation, water-saving mode, energy-saving mode, fog removal mode, and anti-freeze mode. It can be flexibly switched according to application scenarios and changes in ambient temperature, realizing the optimal allocation of resources and the integrated utilization of functional modules, truly achieving multi-purpose use of one machine and improving the overall efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] in: 1. Box body; 101. Air mixing chamber; 102. First cavity; 103. Second cavity; 104. Third cavity; 2. Peak shutter; 3. Antifreeze shutter; 4. Sedimentation tank; 5. Medium outlet; 6. Medium inlet; 7. Regulating valve 1; 8. Water supply pipe; 9. Induced draft fan; 10. Demisting module; 11. Fresh cold air shutter; 12. Partition; 13. Condensate recovery tray; 14. Water collector; 15. Resistance reduction shutter; 16. Circulating water pump; 17. Circulating water tank; 18. Evaporating coil; 19. Water distribution device; 20. Peak device; 21. Regulating valve 2. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] As shown in the figure, a peak closed condensing cooler with bottom air inlet and mist elimination includes a box body 1, and a mixed air chamber 101 is provided at the upper position of the inner cavity of the box body 1; an induced draft fan 9 is installed on the top of the box body 1. When the induced draft fan 9 is working, the air in the mixed air chamber 101 can be sucked in from above and discharged upward from the position of the induced draft fan 9.

[0029] Two connected demisting modules 10 are provided inside the box 1, and resistance-reducing louvers 15 and water distribution devices 19 are provided in sequence between the demisting modules 10 and the side walls of the box 1. The demisting module 10 is a demisting filler with a diamond-shaped cross-section, which extends from one end of the inside of the box 1 to the other end. The axes of the two demisting modules 10 are arranged in parallel and are parallel to the bottom plane of the box 1. The diamond-shaped vertex at one end of each demisting module 10 is arranged downward, and the similar diamond-shaped vertex corners of the two demisting modules 10 are connected to each other. The demisting module 10 is made of PVC, fiberglass, aluminum alloy or stainless steel, and has a cold air channel and a hot air channel respectively connected to the mixed air chamber 101. Its own internal structure and principle belong to the conventional settings in the prior art and will not be elaborated here. A partition 12 is connected below the mist dispersing module 10, and the end of the partition 12 is fixed to the bottom of the box 1. The height of the mist dispersing module 10 can be raised by the partition 12, thereby increasing the overall height of the first cavity 102, the second cavity 103 and the third cavity 104; The two mist elimination modules 10, the resistance reduction louvers 15 and the water distribution device 19 divide the lower cavity of the box body 1 into a first cavity 102, a second cavity 103 and a third cavity 104; a water collector 14 is provided above the resistance reduction louvers 15; The hot air channels of the two mist elimination modules 10 are respectively connected to the first cavity 102 and the second cavity 103; The cold air passages of the two mist elimination modules 10 are in communication with the third cavity 104; An evaporation coil 18 is installed inside the first cavity 102 and the second cavity 103 and near the side wall of the housing 1. A medium inlet 6 and a medium outlet 5 are provided at both ends of the evaporation coil 18, extending to the outside of the housing 1. Water dripping from the water distribution device 19 can fall on the heat exchange wall surface of the evaporation coil 18. It also includes a peak device 20, which is arranged in the inner cavity of the box body 1 and is 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 respectively provided with openable and closable ventilation components at positions close to the side walls of the box body 1. Specifically, the openable and closable ventilation components are: The peak shutter 2 is arranged on the side wall of the box body 1 near the peak device 20. When the peak shutter 2 is opened, air can enter the box body 1 through the peak shutter 2 and enter the air mixing chamber 101 after passing through the peak device 20; The antifreeze shutter 3 is arranged on the side wall of the housing 1 near the first cavity 102 and the second cavity 103. When the antifreeze shutter 3 is opened, air can enter the first cavity 102 and the second cavity 103 respectively, and first pass through the evaporating coil 18, and then enter the air mixing chamber 101 from the hot air channel of the defogging module 10. When the resistance reduction shutter 15 is opened at the same time, some air that has not passed through the defogging module 10 can directly enter the air mixing chamber 101 from the resistance reduction shutter 15; The new cold air louver 11 is provided on the bottom wall of the housing 1 near the third cavity 104, so that air can enter the third cavity 104 from the new cold air louver 11 at the bottom, and then enter the mixed air chamber 101 after passing through the cold air channel of the demisting module 10; The three shutters and the resistance-reducing shutter 15 are any one of manual shutters, pneumatic shutters, and electric shutters.

[0030] The water supply system also includes a circulating water tank 17 installed at the bottom of the box body 1, and 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 an upper water pipe 8, and the upper water pipe 8 is divided into two routes. One route is connected to the spraying device above the peak device 20 (wherein the spraying device is a combination structure of a water distribution tray + a gravity water distribution nozzle above the peak device 20), which is configured to spray water on the peak device 20, and the other route is connected to the water distribution device 19, which is configured to allow water droplets to be sprinkled on the evaporation coil 18 below. Regulating valves are respectively installed on the two water pipes 8. In this example, the regulating valve of the upper water pipe 8 connected to the spraying device is regulating valve 17, and the regulating valve of the upper water pipe 8 connected to the water distribution device 19 is regulating valve 2 21. The above-mentioned spraying device and water distribution device 19 are conventional technologies used for heat exchange equipment in the prior art and will not be elaborated on here.

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

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

[0033] Now combined Figure 1 、 Figure 2 The energy-saving principle of the present invention in the summer peak operating mode is explained below: During the summer peak operating mode, the peak louvers 2, antifreeze louvers 3, and drag-reducing louvers 15 are open, and the fresh cold air louvers 11 are closed; regulating valve 1 7 is open, and regulating valve 2 21 is closed. Under the action of the induced draft fan 9, ambient air passes through the peak louvers 2 and enters the peak device 20, cooling the spray water. Under the action of gravity, the cooled spray water falls to the water distribution device 19 of the evaporating coil 18. After a second distribution by the water distribution device 19, it drips onto the heat exchange surface of the evaporating coil 18. The lower spray water temperature improves the heat exchange efficiency of the evaporating coil 18, thus reducing the peak flow. Simultaneously, ambient air passes through the antifreeze louvers 3 and enters the evaporating coil 18 for heat exchange. The humid hot air after heat exchange then passes through the hot air channel of the diamond-shaped defogging packing, the drag-reducing louvers 15, and the water collector 14 into the air mixing chamber 101. Finally, the induced draft fan 9 exhausts the humid hot air into the atmosphere. During this process, the peak device 20 cools the spray water, which plays a role in peak shaving; part of the humid and hot air at the outlet of the evaporating coil 18 is discharged into the atmosphere through the resistance reducing louver 15, and the resistance reducing louver 15 plays a role in reducing the wind resistance of the whole machine and saving energy; part of the humid and hot air at the outlet of the evaporating coil 18 is discharged into the atmosphere through the hot air channel of the diamond-shaped defogging module 10, and the diamond-shaped defogging module 10 plays a role in collecting water.

[0034] Now combined Figure 1 、 Figure 3The water-saving and energy-saving principles of the present invention in the spring and autumn operating modes are explained: During the spring and autumn operating modes, the ambient temperature is low, and the evaporation coil 18 alone can meet the heat exchange requirements. The peak louver 2 is closed, the antifreeze louver 3 and the resistance-reducing louver 15 are open, and the new cold air louver 11 is closed; the regulating valve 1 7 is closed, and the regulating valve 2 21 is open. Under the action of the induced draft fan 9, all ambient air passes through the antifreeze louver 3 and enters the evaporation coil 18 for heat exchange. The hot and humid air after heat exchange then passes through the hot air channel of the diamond-shaped demisting module 10, the resistance-reducing louver 15, and the water collector 14 into the mixed air chamber 101. Finally, the induced draft fan 9 exhausts the hot and humid air into the atmosphere. During this process, part of the humid and hot air at the outlet of the evaporating coil 18 is discharged into the atmosphere through the resistance-reducing louver 15, which reduces the wind resistance of the entire machine and saves energy; part of the humid and hot air at the outlet of the evaporating coil 18 is discharged into the atmosphere through the hot air channel of the diamond-shaped demisting 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, which avoids a large amount of wind waste and evaporation consumption of spray water, thereby achieving the purpose of saving water and energy.

[0035] Now combined Figure 1 、 Figure 4 The defogging principle of the present invention in the winter defogging mode is explained below: During winter defogging mode, the ambient temperature is low, making white fog more likely to form. Peak shutter 2 is closed, antifreeze shutter 3 is open, resistance reduction shutter 15 is closed, and fresh cold air shutter 11 is open; regulating valve 1 7 is closed, and regulating valve 2 21 is open. Due to the low ambient temperature, the air volume required for evaporative heat exchange is low, and the device's fan pressure head can meet the heat exchange requirements. At this time, the humid hot air at the outlet of the evaporating coil 18 flows entirely through the hot air channel of the diamond-shaped defogging packing. The excess fan pressure provides power to introduce fresh ambient cold air through the fresh cold air shutter 11 at the bottom of the device. This new cold air passes through the cold air channel of the diamond-shaped defogging packing, undergoing inter-wall heat exchange with the humid hot air in the hot air channel of the diamond-shaped defogging packing. The humid hot air in the hot air channel of the diamond-shaped defogging packing is condensed, releasing condensate. This condensate then falls back to the condensate recovery tray 13 and, under the action of gravity, flows back to the circulating water tank 17 for secondary use, thereby achieving water conservation. The hot and humid air and the new cold air that have exchanged heat through the diamond-shaped mist-eliminating filler partition wall are mixed in the air mixing chamber 101 under the action of the equipment's induced draft fan 9. Compared with the original nearly saturated hot and humid air at the outlet of the evaporating coil 18, the mixed humid air has lower moisture content, lower relative humidity, and lower temperature, and is far away from the relative humidity line of 100%. It is then discharged into the atmosphere and comes into contact with the ambient low-temperature air, making it less likely to produce white fog.

[0036] Now combined Figure 1 、 Figure 5The antifreeze mode of the present invention is described below: In this mode, the peak louvers 2, antifreeze louvers 3, drag-reducing louvers 15, and fresh cold air louvers 11 are closed; the induced draft fan 9 and circulating water pump 16 are turned off, and the spray water in the circulating water tank 17 is drained. The device can be removed from the system via a bypass, and the media within the device must be drained. The media can also flow through the evaporating coil 18, allowing the device to participate in system operation. Since the relevant louvers are closed, the induced draft fan 9 does not generate draft force, and the media in the evaporating coil 18 retains heat, creating a warm room inside the device, which helps prevent freezing.

[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 in the scope of protection of the present invention.

Claims

1. A peak closed condensing cooler with bottom air inlet and mist elimination, characterized in that: It includes a box body, and an air mixing chamber is provided at the upper part of the inner cavity of the box body; Two connected demisting modules are provided inside the box, and resistance-reducing louvers and water distribution devices are provided in sequence between the demisting modules and the side walls of the box. The two demisting modules, resistance-reducing louvers and water distribution devices divide the lower cavity of the box into a first cavity, a second cavity and a third cavity; The mist elimination module has a cold air channel and a hot air channel respectively connected to the air mixing chamber; The hot air channels of the two mist elimination modules are respectively connected to the first cavity and the second cavity; The cold air passages of the two mist elimination modules are connected to the third cavity; An evaporation coil is installed inside the first cavity and the second cavity and near the side wall of the box body, and water dripping from the water distribution device can fall on the heat exchange wall surface of the evaporation coil; It also includes a spike device, which is arranged in the inner cavity of the box and is located directly above the water distribution device; Among them, the first cavity, the second cavity, the third cavity and the peak device are respectively provided with openable and closable ventilation components at positions close to the side walls of the box.

2. A bottom-inlet mist-eliminating peak closed condensing cooler according to claim 1, characterized in that: It also includes a water supply system, which includes a circulating water tank installed at the bottom of the box body, a circulating water pump installed on the circulating water tank, and an upper water pipe connected to the output end of the circulating water pump. The upper water pipe is divided into two routes, one is connected to the spray device above the spike device, and is configured to spray water on the spike device, and the other is connected to the water distribution device, and is configured to allow water droplets to be sprinkled on the evaporation coil below. Regulating valves are respectively installed on the two water pipes.

3. A peak closed condensing cooler with bottom air inlet and mist elimination according to claim 2, characterized in that: A sedimentation tank is provided at the bottom of the circulating water tank.

4. A peak closed condensing cooler with bottom air inlet and mist elimination according to claim 2, characterized in that: A condensed water recovery tray is provided at the bottom of the box body where the first cavity and the second cavity are located. The condensed water recovery tray is connected to the circulating water tank.

5. The peak closed condensing cooler with bottom air inlet and mist elimination according to claim 1, characterized in that: Both ends of the evaporating coil are respectively provided with a medium inlet and a medium outlet extending to the outside of the box.

6. The peak closed condensing cooler with bottom air inlet and mist elimination according to claim 1, characterized in that: A water collector is provided above the resistance-reducing shutter.

7. The peak closed condensing cooler with bottom air inlet and mist elimination according to claim 1, characterized in that: The cross section of the mist elimination module is a diamond structure, with a partition connected to the bottom, and the end of the partition is fixed to the bottom of the box.

8. The peak closed condensing cooler with bottom air inlet and mist elimination according to claim 1, characterized in that: An induced draft fan is installed on the top of the box.

9. The peak closed condensing cooler with bottom air inlet and mist elimination according to claim 1, characterized in that: The ventilation components that can be opened and closed are: a peak shutter, which is arranged on the side wall of the box near the peak device; Antifreeze shutters are arranged on the side walls of the box body near the first cavity and the second cavity; A new cold air louver is provided on the bottom wall of the box body near the third cavity; Among them, the above three shutters and the resistance reduction shutter are any one of manual shutters, pneumatic shutters, and electric shutters.

Images