Low temperature closed indirect evaporative cooling tower
Patent Information
- Application Number
- CN202521392483.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-03
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-07-03
AI Technical Summary
[0004]本实用新型为了解决相关技术中的问题，提供了一种低温闭式间接蒸发冷却塔，该装置解决了冷却效率低，冷却塔占地面积大的问题
[0018]上述方案中通过收水器的设置，冷却塔运行过程中，喷淋水与空气充分接触进行热交换时，部分细小水滴会随空气流动被带出塔体，造成水资源的浪费；收水器能够对空气中携带的水滴进行有效拦截和收集，使得水滴重新回到塔体内参与循环，提高了水资源的利用率。
Smart Images
Figure CN224650393U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cooling tower technology, specifically a low-temperature closed-loop indirect evaporative cooling tower. Background Technology
[0002] In industrial production processes, such as chemical, power, and metallurgical industries, as well as in building air conditioning systems and data center cooling systems, a large amount of heat needs to be dissipated in a timely manner to ensure stable equipment operation and system performance. As the core equipment for achieving heat exchange and dissipation, the performance of cooling towers directly affects the energy consumption and reliability of the entire system. Traditional evaporative cooling towers mostly adopt open structures or simple indirect evaporative cooling methods.
[0003] In existing open-type cooling towers, the circulating water is in direct contact with the air, making it susceptible to contamination by airborne impurities and microorganisms. This leads to water quality deterioration, increased system maintenance costs, and higher equipment corrosion risks. Meanwhile, traditional indirect evaporative cooling towers have limited heat exchange efficiency, making it difficult to achieve efficient heat dissipation in a short time, resulting in poor cooling performance. Furthermore, to meet specific cooling demands, traditional cooling towers often require a large space layout. Their bulky size not only occupies significant space resources but also causes inconvenience in installation and transportation, making them unsuitable for space-constrained applications. Utility Model Content
[0004] In order to solve the problems in related technologies, this utility model provides a low-temperature closed-loop indirect evaporative cooling tower, which solves the problems of low cooling efficiency and large floor space required for cooling towers.
[0005] To solve the above problems, the following technical solutions are provided:
[0006] This utility model discloses a low-temperature closed-loop indirect evaporative cooling tower, comprising a tower body, an air inlet on the lower end face of one side of the tower body, and a partition wall heat exchanger inside the tower body corresponding to the air inlet. A set of parallel ends of the partition wall heat exchanger are respectively an air inlet and an air outlet, with the air inlet corresponding to the air inlet. A gap exists between the end of the partition wall heat exchanger away from the air inlet and the inner wall of the tower body. A baffle is provided above the gap, with one end of the baffle abutting against the inner wall of the tower body and the other end abutting against the side wall of the partition wall heat exchanger away from the air inlet, forming a cavity. A water collection tank is provided at the bottom of the tower body, and a drain pipe is provided on one side of the water collection tank. A heat exchange structure is provided inside the tower body above the partition wall heat exchanger, and a spray structure is provided above the heat exchange structure. An air outlet is provided at the top of the cooling tower, and a fan is installed inside the air outlet.
[0007] In the above scheme, by setting up a partition wall heat exchanger, turning on the fan and the spray structure, dry and cold air rushes in through the air inlet. The dry and cold air enters from the air inlet end of the partition wall heat exchanger and flows out from the air outlet end. At this time, during the process of the dry and cold air flowing through the partition wall heat exchanger, it indirectly comes into contact with the falling spray water for the first heat exchange. The dry and cold air flowing out from the air outlet comes into direct contact with the spray water, transforming from dry and cold air into wet bulb air for the second heat exchange. Under the action of the fan, this wet bulb air rushes into the top of the tower from the vertical channel of the partition wall heat exchanger. This wet bulb air exchanges heat with the water that just rushed into the partition wall heat exchanger. The dry, cold air in the heat exchanger undergoes a third heat exchange, thereby lowering the temperature of the dry, cold air that has just entered the indirect heat exchanger. This cycle repeats, reducing the temperature inside the cooling tower and improving its cooling efficiency. This cooling tower only requires one indirect heat exchanger to achieve heat exchange, effectively reducing its footprint and improving its applicability and practicality, thus solving the problems of low cooling efficiency and large footprint. The baffles effectively guide the airflow, preventing disordered airflow within the tower and improving the contact efficiency between the air and the indirect heat exchanger.
[0008] The drainage pipe is used to drain the water in the water collection tank out of the tower, which facilitates regular water replacement or cleaning of impurities and prevents water quality deterioration from affecting cooling efficiency. The drainage pipe can also flexibly control the water level in the water collection tank to prevent the water level from overflowing the tower or the water level from affecting the spray, thus ensuring the stability and reliability of the cooling tower water circulation system.
[0009] There is a gap between the lower end face of the partition wall heat exchanger and the water collection tank. A vertical channel is formed between the two parallel ends of another set of partition wall heat exchangers, and the vertical channel is connected to the top of the tower body.
[0010] The above solution provides contact space between sprayed water and air through the setting of vertical channels and gaps, allowing the air to fully contact the sprayed water and ensuring the stability of system operation; it further improves the heat exchange effect, thereby enabling the heat to be dissipated from the air outlet quickly and efficiently, ensuring good cooling performance.
[0011] The heat exchange structure is a cooling coil. The lower end of the cooling coil is connected to a water inlet pipe, and the upper end of the cooling coil is connected to a water outlet pipe. Both the water inlet pipe and the water outlet pipe pass through the tower body and extend out of the tower body.
[0012] The above scheme uses an inlet pipe to connect with the medium to be cooled.
[0013] The spray structure is a first spray pipe, and a spray water pump is connected to the drain pipe. A connecting pipe is connected to the outlet of the spray water pump. The upper end of the connecting pipe is connected to the first spray pipe. A plurality of first spray heads for spraying are provided on the first spray pipe.
[0014] In the above scheme, the drainage pipe is connected to the inlet of the spray pump through the setting of the spray structure, so that the water in the collection tank can be directly drawn by the spray pump and recycled, thereby improving the utilization rate of water resources.
[0015] The heat exchange structure is a packing layer, and the spraying structure is a second spray pipe, on which a plurality of second spray heads for spraying are provided.
[0016] The above solution increases the contact area between the medium to be cooled and the air by setting up a packing layer, thereby improving the cooling efficiency.
[0017] A water collector is installed inside the tower located above the spray structure.
[0018] In the above solution, by setting up a water collector, during the operation of the cooling tower, when the sprayed water comes into full contact with the air for heat exchange, some small water droplets will be carried out of the tower with the airflow, resulting in the waste of water resources. The water collector can effectively intercept and collect water droplets carried in the air, so that the water droplets return to the tower to participate in the circulation, thereby improving the utilization rate of water resources.
[0019] The above solution has the following advantages:
[0020] 1. Due to the low-temperature closed-loop indirect evaporative cooling tower of this utility model, when the fan is turned on and the spray structure is activated, dry and cold air rushes in through the air inlet. The dry and cold air enters from the air inlet end of the air inlet of the air inlet and flows out from the air outlet end. At this time, during the process of the dry and cold air flowing through the air inlet, it indirectly contacts the falling spray water for the first heat exchange. The dry and cold air flowing out from the air outlet comes into direct contact with the spray water, transforming from dry and cold air into wet bulb air for the second heat exchange. This wet bulb air, under the action of the fan, flows out from the air inlet of the air inlet. The wet-bulb air flows into the top of the tower through a vertical channel. This wet-bulb air then undergoes a third heat exchange with the dry, cold air that has just entered the heat exchanger, thus lowering the temperature of the dry, cold air. This cycle repeats, reducing the temperature inside the cooling tower and improving its cooling efficiency. This cooling tower only requires one heat exchanger to achieve heat exchange, effectively reducing its footprint and improving its applicability and practicality, thereby solving the problems of low cooling efficiency and large footprint.
[0021] 2. By setting up baffles, the airflow is effectively guided, avoiding disorderly airflow within the tower and improving the contact efficiency between the air and the indirect heat exchanger.
[0022] 3. The vertical channels and gaps provide contact space between the sprayed water and the air, allowing the air to fully contact the sprayed water, ensuring the stability of the system operation, further improving the heat exchange effect, and thus enabling the heat to be dissipated from the air outlet quickly and efficiently, ensuring good cooling performance. Attached Figure Description
[0023] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:
[0024] Figure 1 This is a schematic diagram of the structure of Example 1;
[0025] Figure 2 This is a schematic diagram of airflow in Example 1;
[0026] Figure 3 This is a schematic diagram of the structure of Example 2;
[0027] Figure 4 This is a schematic diagram of airflow in Example 2;
[0028] Explanation of reference numerals in the attached drawings: 1. Tower body; 2. Air inlet; 3. Indirect heat exchanger; 4. Air inlet end; 5. Air outlet end; 6. Baffle plate; 7. Cavity; 8. Water collection tank; 9. Drain pipe; 10. Air outlet; 11. Fan; 12. Cooling coil; 13. Water inlet pipe; 14. Water outlet pipe; 15. First spray pipe; 16. Spray water pump; 17. Connecting pipe; 18. Packing layer; 19. Second spray pipe; 20. Water collector. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] In specific embodiment 1, such as Figures 1-2As shown, a low-temperature closed-loop indirect evaporative cooling tower of this utility model includes a tower body 1. An air inlet 2 is provided on the lower end face of one side of the tower body 1. A partition heat exchanger 3 is provided inside the tower body 1 corresponding to the air inlet 2. A set of parallel two ends of the partition heat exchanger 3 are respectively the air inlet end 4 and the air outlet end 5. The air inlet end 4 corresponds to the air inlet 2. There is a gap between the end of the partition heat exchanger 3 away from the air inlet 2 and the inner wall of the tower body 1. A baffle 6 is provided above the gap. One end of the baffle 6 abuts against the inner wall of the tower body 1, and the other end of the baffle 6 abuts against the side wall of the partition heat exchanger 3 away from the air inlet 2, forming a cavity 7. A water collection tank 8 is provided at the bottom of the tower body 1. A heat exchange structure is provided inside the tower body 1 above the partition heat exchanger 3. A spray structure is provided above the heat exchange structure. An air outlet 10 is provided at the top of the cooling tower. A fan 11 is provided inside the air outlet 10. Dry, cold air entering from inlet 2 flows into tower body 1 through indirect heat exchanger 3. During this flow, the dry, cold air indirectly contacts the falling spray water for the first heat exchange. Dry, cold air exiting from outlet 5 directly contacts the spray water, transforming into wet-bulb air for the second heat exchange. This wet-bulb air, driven by fan 11, flows from the vertical channel of indirect heat exchanger 3 into the top of tower body 1. Within indirect heat exchanger 3, this wet-bulb air interacts with the dry, cold air that has just entered. The third heat exchange is performed, thereby reducing the temperature of the dry, cold air that has just entered the indirect heat exchanger 3. This cycle is repeated to lower the temperature inside the cooling tower, which helps to improve the cooling efficiency of the cooling tower. Only one indirect heat exchanger 3 is needed in this cooling tower to achieve heat exchange, which effectively reduces the floor space of the cooling tower and improves its applicability and practicality. The baffle 6 effectively guides the airflow, avoids disorderly airflow in the tower body 1, and improves the contact efficiency between the air and the indirect heat exchanger 3.
[0031] A gap exists between the lower end face of the partition wall heat exchanger 3 and the water collection tank 8. Another set of parallel ends in the partition wall heat exchanger 3 form a vertical channel, which connects to the top of the tower body 1. The vertical channel and gap design provide contact space between the sprayed water and air, ensuring sufficient contact between the air and the sprayed water and guaranteeing the stability of the system operation. This further improves the heat exchange effect, enabling the heat to be quickly and efficiently dissipated from the air outlet 10, ensuring excellent cooling performance.
[0032] A drain pipe 9 is installed on one side of the water collection tank 8; it is used to drain the water in the water collection tank 8 out of the tower, so as to facilitate regular water replacement or cleaning of impurities, and avoid water quality deterioration affecting cooling efficiency; the drain pipe 9 can also flexibly control the water level in the water collection tank 8, prevent the water level from overflowing the tower body 1 due to excessively high water level or affecting the spray due to excessively low water level, and ensure the stability and reliability of the cooling tower water circulation system.
[0033] The heat exchange structure is a cooling coil 12, with an inlet pipe 13 connected to the lower end of the cooling coil 12 and an outlet pipe 14 connected to the upper end. Both the inlet pipe 13 and the outlet pipe 14 penetrate the tower body 1 and extend outside the tower body 1. The inlet pipe 13 is used to connect with the medium to be cooled. The spray structure is a first spray pipe 15, with a spray water pump 16 connected to the drain pipe 9. A connecting pipe 17 is connected to the outlet of the spray water pump 16, and the upper end of the connecting pipe 17 is connected to the first spray pipe 15. The first spray pipe 15 is equipped with several first spray heads for spraying. The drain pipe 9 is connected to the inlet of the spray water pump 16, so that the water in the water collection tank 8 can be directly drawn by the spray water pump 16 and recycled, improving the utilization rate of water resources.
[0034] A water collector 20 is installed inside the tower body 1 located above the spray structure. During the operation of the cooling tower, when the spray water comes into full contact with the air for heat exchange, some small water droplets will be carried out of the tower body 1 by the airflow, resulting in water waste. The water collector 20 can effectively intercept and collect the water droplets carried in the air, so that the water droplets return to the tower body 1 to participate in the circulation, thereby improving the utilization rate of water resources.
[0035] like Figure 2 As shown, the working process in this embodiment is as follows: the fan 11 is turned on, the spray water pump 16 is turned on, and the medium to be cooled is introduced through the water inlet pipe 13 of the cooling coil 12. The dry and cold air from the outside rushes in from the air inlet 2 and flows into the cavity 7 through the air inlet end 4 of the partition heat exchanger 3. The dry and cold air indirectly contacts the spray water in the vertical channel to complete the first heat exchange. Then, in the gap between the partition heat exchanger 3 and the water collection tank 8, it directly contacts the spray water and the dry and cold air is converted into wet bulb air for the second heat exchange. Under the action of the fan 11, the wet bulb air flows into the top of the tower body 1 along the vertical channel. When the wet bulb air passes through the vertical channel of the partition heat exchanger 3, it indirectly contacts the dry and cold air that just entered from the air inlet end 4 to carry out the third heat exchange, reducing the temperature inside the cooling tower. The wet bulb air and the spray water simultaneously cool the cooling coil 12, thereby achieving the cooling of the medium to be cooled in the cooling coil 12.
[0036] In a specific embodiment 2, such as Figures 3-4 As shown, the difference between this embodiment and embodiment 1 is that the heat exchange structure in this embodiment is a packing layer 18, the spray structure is a second spray pipe 19, and the second spray pipe 19 is provided with a plurality of second spray heads for spraying. The second spray pipe 19 is used to introduce the medium to be cooled, and the packing layer 18 increases the contact area between the medium to be cooled and the air, thereby improving the cooling efficiency.
[0037] like Figure 4As shown, the working process in this embodiment is as follows: the fan 11 is turned on, and the medium to be cooled is introduced through the second spray pipe 19. The second spray head sprays the medium to be cooled. Dry and cold air from the outside rushes in from the air inlet 2 and flows into the cavity 7 through the air inlet end 4 of the partition heat exchanger 3. The dry and cold air indirectly contacts the medium to be cooled in the vertical channel, completing the first heat exchange. Then, in the gap between the partition heat exchanger 3 and the water collection tank 8, it directly contacts the medium to be cooled, and the dry and cold air is converted into wet bulb air for the second heat exchange. Under the action of the fan 11, the wet bulb air flows into the top of the tower body 1 along the vertical channel. When the wet bulb air passes through the vertical channel of the partition heat exchanger 3, it indirectly contacts the dry and cold air that just entered from the air inlet end 4, performing the third heat exchange. The heat-exchanged wet bulb air then exchanges heat with the medium to be cooled in the packing layer 18, thereby reducing the temperature of the medium to be cooled. The cooled medium falls into the water collection tank 8 and is finally discharged from the drain pipe 9.
[0038] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components, and can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0039] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all implementation methods here, and any obvious variations or modifications derived therefrom are still within the protection scope of this utility model.
Claims
1. A low temperature closed indirect evaporative cooling tower characterized by, The cooling tower includes a tower body with an air inlet on the lower end face of one side. A partition wall heat exchanger is installed inside the tower body corresponding to the air inlet. Two parallel ends of the partition wall heat exchanger are respectively the air inlet and air outlet, with the air inlet corresponding to the air inlet. A gap exists between the end of the partition wall heat exchanger away from the air inlet and the inner wall of the tower body. A baffle is installed above the gap, with one end of the baffle abutting against the inner wall of the tower body and the other end abutting against the side wall of the partition wall heat exchanger away from the air inlet, forming a cavity. A water collection tank is installed at the bottom of the tower body, with a drain pipe on one side of the water collection tank. A heat exchange structure is installed inside the tower body above the partition wall heat exchanger, with a spray structure above the heat exchange structure. An air outlet is installed at the top of the cooling tower, and a fan is installed inside the air outlet.
2. A low temperature closed indirect evaporative cooling tower as claimed in claim 1, wherein, There is a gap between the lower end face of the partition wall heat exchanger and the water collection tank. A vertical channel is formed between the two parallel ends of another set of partition wall heat exchangers, and the vertical channel is connected to the top of the tower body.
3. A low temperature closed indirect evaporative cooling tower as claimed in claim 1, wherein, The heat exchange structure is a cooling coil. The lower end of the cooling coil is connected to a water inlet pipe, and the upper end of the cooling coil is connected to a water outlet pipe. Both the water inlet pipe and the water outlet pipe pass through the tower body and extend out of the tower body.
4. A low-temperature closed indirect evaporative cooling tower as claimed in claim 3, wherein, The spray structure is a first spray pipe, and a spray water pump is connected to the drain pipe. A connecting pipe is connected to the outlet of the spray water pump. The upper end of the connecting pipe is connected to the first spray pipe. A plurality of first spray heads for spraying are provided on the first spray pipe.
5. A low-temperature closed indirect evaporative cooling tower as claimed in claim 1, wherein, The heat exchange structure is a packing layer, and the spraying structure is a second spray pipe, on which a plurality of second spray heads for spraying are provided.
6. A low-temperature closed indirect evaporative cooling tower as defined in claim 1, wherein, A water collector is installed inside the tower located above the spray structure.