An indirect cooling tower
The cooling tower, designed with a partition heat exchanger and louvers, solves the problems of water and electricity consumption and dust and debris ingress, achieving low-cost, high-efficiency cooling and equipment stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI WANHENG HEAT TRANSFER TECH CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-29
AI Technical Summary
Existing cooling towers consume a lot of water and electricity and have high equipment costs. Furthermore, in open cooling towers, air can directly enter, causing dust and debris to get in and affecting the stability of the equipment.
It adopts a partition heat exchanger and louver design, combining evaporative cooling and partition heat exchange, using low-temperature air to remove heat, and adding louvers to the air inlet and outlet to control airflow and prevent debris from entering.
It achieves low-cost and high-efficiency cooling, reduces water evaporation and power consumption, and protects the cleanliness of the internal structure of the cooling tower, ensuring stable operation of the equipment.
Smart Images

Figure CN224302802U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cooling tower technology, specifically relating to an indirect cooling tower. Background Technology
[0002] Currently, some cooling towers increase the heat exchange area on the packing surface by spraying water. The principle is to remove heat through water evaporation. However, this method has problems: the water evaporates continuously, resulting in high water consumption. The principle of a combined wet and dry cooling tower is that high-temperature circulating water enters the finned heat exchanger inside the tower. The heat is transferred to the air flowing through the tower through the pipe walls and fins, providing initial cooling for the circulating medium. After exiting the finned heat exchanger, the circulating water enters the conventional cooler, where the heat is transferred to the spray water outside the pipes through the pipe walls. At the same time, the external air inside the tower exchanges heat with the spray water, providing secondary cooling for the circulating water. When the ambient temperature is low, the spray can be turned off to save water. The disadvantages of this device are high equipment cost, high power consumption, and the lack of air flow control and filtration. Especially in open cooling towers, the direct entry of air into the tower can cause dust and debris to enter, leading to dust and stains inside the tower and resulting in unstable equipment operation. Utility Model Content
[0003] Purpose of the utility model: To provide an indirect cooling tower that solves the problems of high water and electricity consumption and high equipment cost of existing equipment.
[0004] Technical solution: An indirect cooling tower, comprising: tower body, packing, fan, spray head, water collector and water collection tank;
[0005] The packing material is installed in the middle of the tower body, the fan is installed at the top of the tower body, the spray head is installed in the tower body and above the packing material, the water collector is installed in the tower body and between the fan and the spray head, and the water collection tank is installed at the top of the tower body and below the packing material; the packing material is a partition wall heat exchanger.
[0006] In a further embodiment, air inlets are provided on both sides of the tower body, and the air inlets are located between the packing and the water collection tank.
[0007] In a further embodiment, the top of the tower body is provided with an air outlet, which is located above the fan.
[0008] In a further embodiment, the air inlet is provided with louvers.
[0009] In a further embodiment, the water collector is provided with louvers above it.
[0010] In a further embodiment, a coil heat exchanger is provided between the water collection tank and the packing material.
[0011] Beneficial effects: This utility model replaces finned tubes with indirect heat exchange. The cooling tower uses evaporative cooling when the ambient temperature is high in summer and indirect heat exchange when the ambient temperature is low, using low-temperature air to remove heat from the circulating medium. In addition, louvers are added to the air inlet and outlet to improve cooling efficiency and prevent debris from entering the cooling tower. The louvers allow sufficient air to flow in and out to support the cooling process, while blocking external objects such as leaves, dust and other potential pollutants. This not only helps to protect the cleanliness and integrity of the internal structure of the cooling tower, but also ensures the efficient operation of the cooling system. Therefore, this utility model has the advantages of low cost, low wind resistance, high efficiency and low power consumption. Attached Figure Description
[0012] Figure 1 This is a counter-flow open cooling tower of this utility model.
[0013] Figure 2 This is a counter-flow closed-loop cooling tower of this utility model.
[0014] Attached reference numerals: 1. Tower body; 2. Packing material; 3. Fan; 4. Spray head; 5. Water collector; 6. Water collection tank; 7. Air inlet; 8. Air outlet; 9. Louver; 10. Coil heat exchanger. Detailed Implementation
[0015] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0018] An indirect cooling tower includes: a tower body 1, packing 2, a fan 3, a spray head 4, a water collector 5, a water collection tank 6, an air inlet 7, an air outlet 8, louvers 9, and a coil heat exchanger 10.
[0019] The packing material 2 is installed in the middle of the tower body 1, the fan 3 is installed at the top of the tower body 1, the spray head 4 is installed inside the tower body 1 and above the packing material 2, the water collector 5 is installed inside the tower body 1 and between the fan 3 and the spray head 4, and the water collection tank 6 is installed at the top of the tower body 1 and below the packing material 2; air inlets 7 are provided on both sides of the tower body 1, and the air inlets 7 are located between the packing material 2 and the water collection tank 6; an air outlet 8 is provided at the top of the tower body 1, and the air outlet 8 is located above the fan 3; louvers 9 are provided at the air inlets 7; louvers 9 are provided above the water collector 5; the packing material is a partition wall heat exchanger.
[0020] Example 1:
[0021] like Figure 1 As shown, this is a counter-flow open cooling tower. When in operation, air enters the packing 2 through the air inlet 7, while the spray head 4 sprays water into the packing 2 to achieve evaporation. The water collector 5 collects the water from the evaporated gas, and the gas flows out through the fan 3 and the air outlet 8.
[0022] Example 2:
[0023] like Figure 2As shown, this is a counter-flow closed-loop cooling tower. A coil heat exchanger 10 is installed between the water collection tank 6 and the packing 2. The main function of the coil heat exchanger 10 is to exchange heat and lower the temperature of the cooling water. Specifically, the heat exchanger lowers the temperature of the cooling water by exchanging heat with the outside air, thus ensuring the normal operation of the equipment. The cooling water flows inside the heat exchanger, while the outside air is introduced into the tower by the fan 3 to exchange heat with the cooling water. In this process, the cooling water releases heat and its temperature decreases, while the air absorbs heat and is discharged outside the tower. This design ensures that the cooling water circulates in a closed system, avoiding direct contact with the external environment, thereby reducing the risk of water evaporation and water pollution.
[0024] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. An indirect cooling tower, characterized in that, include: Tower body, packing material, fan, spray heads, water collector, and water collection tank; The packing material is installed in the middle of the tower body, the fan is installed at the top of the tower body, the spray head is installed in the tower body and above the packing material, the water collector is installed in the tower body and between the fan and the spray head, and the water collection tank is installed at the top of the tower body and below the packing material; the packing material is a partition wall heat exchanger.
2. The indirect cooling tower according to claim 1, characterized in that, The tower body is provided with air inlets on both sides, and the air inlets are located between the packing and the water collection tank.
3. The indirect cooling tower according to claim 1, characterized in that, The top of the tower is provided with an air outlet, which is located above the fan.
4. An indirect cooling tower according to claim 2, characterized in that, The air inlet is equipped with louvers.
5. An indirect cooling tower according to claim 1, characterized in that, The water collector is equipped with louvers on its top.
6. An indirect cooling tower according to claim 1, characterized in that, A coil heat exchanger is provided between the water collection tank and the packing material.