Self-cleaning plate type evaporation air cooler

Abstract

The utility model discloses a self-cleaning plate type evaporation air cooler, which belongs to the field of evaporation air coolers and is characterized in that a heat exchanger storage tank is arranged at a plate type heat exchanger, the side wall of the heat exchanger storage tank is connected with a backwashing pump body through a liquid inlet pipe, the other end of the backwashing pump body is provided with a liquid conveying pipe, and electric control valves are arranged on the liquid conveying pipe and the liquid inlet pipe. And backwashing liquid is input into the heat exchanger storage tank through the backwashing pump body. According to the self-cleaning system, by designing the clean liquid storage tank, the liquid inlet pipe and the liquid discharge pipe, the interior of the plate heat exchanger is clean, dirt residues are avoided, and the heat exchange efficiency and the equipment performance are improved. The backwashing system is provided with a backwashing pump body, a liquid inlet pipe and a liquid conveying pipe, backwashing liquid is injected to clean the surface of the heat exchanger, dirt and sediment are removed, the heat exchange efficiency is improved, and the service life of equipment is prolonged. The two systems act together to recycle the cleaning liquid, so that the cleaning efficiency is improved, and the waste is reduced. The system is high in automation degree, flexible in valve operation and convenient and efficient in cleaning process.

Description

Technical Field

[0001] This utility model relates to the field of evaporative air coolers, and in particular to a self-cleaning plate evaporative air cooler. Background Technology

[0002] An evaporative air cooler is a highly efficient and energy-saving cooling device that combines water cooling with air cooling, and heat and mass transfer processes. It is also known as a closed-circuit cooling tower, a closed cooling tower, or a hermetically sealed cooling tower. Its working principle is based on the heat absorption characteristic of water evaporation. Typically, an evaporative air cooler places a tubular heat exchanger inside the tower, achieving cooling through heat exchange between flowing air, sprayed water, and circulating water. Specifically, water is continuously sprayed from above, forming a water film on the outer surface of the heat exchange tubes. This water film cools the hot fluid inside the tubes through the tube walls. Subsequently, the water film evaporates upon heating, exchanging heat and mass with the flowing air. Air continuously flows through the tube bundle, carrying away sensible heat and latent heat generated by the evaporation of the water film, thereby cooling the hot fluid inside the tubes.

[0003] In practical applications and maintenance, while plate heat exchangers do improve heat exchange efficiency in evaporative air coolers, they also present cleaning challenges. The surface design of plate heat exchangers has numerous folds; while these features enhance heat exchange efficiency, they also create conditions for fouling. Fouling accumulation significantly reduces the heat exchanger's heat exchange efficiency, leading to a substantial decrease in energy utilization and increased operating costs. Furthermore, fouling can clog the flow channels between the plates, affecting equipment performance and even causing system instability.

[0004] In terms of cleaning and maintenance, the complex structure of plate heat exchangers makes maintenance both time-consuming and labor-intensive. On the one hand, the plates must be disassembled carefully to avoid damaging critical components such as gaskets; on the other hand, the narrow channels and folds between the plates make it extremely difficult to thoroughly remove all dirt. This not only increases maintenance costs but may also adversely affect the normal operation of the equipment. Utility Model Content

[0005] The main objective of this invention is to provide a self-cleaning plate-type evaporative air cooler that can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A self-cleaning plate evaporative air cooler includes a support frame, an air cooler assembly, heat exchanger pipes, heat exchanger valves, interfaces, and a plate heat exchanger. The air cooler assembly and the plate heat exchanger are mounted on the support frame. The upper end of the plate heat exchanger has multiple interfaces, and the heat exchanger pipes are installed at the interfaces through the heat exchanger valves.

[0008] The plate heat exchanger is equipped with a heat exchanger storage tank, and the side wall of the heat exchanger storage tank is connected to a backwash pump body through a liquid inlet pipe. The other end of the backwash pump body is equipped with a liquid delivery pipe. Electrically controlled valves are installed on the liquid delivery pipe and the liquid inlet pipe. Backwash liquid is input into the heat exchanger storage tank through the backwash pump body to achieve cleaning of the surface of the plate heat exchanger.

[0009] The two interfaces are respectively equipped with a first tee pipe and a second tee pipe. The first tee pipe is connected to a heat exchanger pipe and an inlet pipe, and the second tee pipe is connected to another heat exchanger pipe and an outlet pipe. The outer ends of the inlet pipe and the outlet pipe are connected to a cleaning storage tank. The inlet pipe and the outlet pipe are respectively equipped with a first valve and a second valve. The cleaning operation inside the plate heat exchanger is realized through the cleaning storage tank, the inlet pipe, and the outlet pipe.

[0010] In a preferred embodiment of this utility model, the plate heat exchanger is placed in a heat exchanger storage tank. The side wall of the plate heat exchanger is provided with a support, which is installed on the heat exchanger storage tank by bolts. Both ends of the heat exchanger storage tank are connected to sealing caps by flanges and bolts. A sealing ring is provided at the connection between the sealing cap and the heat exchanger storage tank.

[0011] In a preferred embodiment of this utility model, the heat exchanger storage tank and the cleaning liquid storage tank are mounted on a support frame by a bracket, and the cleaning liquid storage tank contains cleaning liquid. The inlet pipe and the outlet pipe are connected to the cleaning liquid storage tank by connecting flanges and bolts. The side wall of the outlet pipe is provided with a branch pipe, which is connected to a water pump.

[0012] In the preferred embodiment of this utility model, the first tee pipe and the second tee pipe are both fixed to the heat exchanger storage tank by bolts, and sealant is injected at the connection. The first valve and the second valve are both electrically controlled ball valves.

[0013] In a preferred embodiment of this utility model, the backwash pump body is mounted on a support frame via a bracket, and the backwash pump body is connected to the infusion pipe and the inlet pipe via connecting flanges and bolts. The electrically controlled valve is fixed to the infusion pipe and the inlet pipe via connecting flanges and bolts, and the electrically controlled valve is an electrically controlled butterfly valve.

[0014] In a preferred embodiment of this utility model, a drain pipe is provided at the lower end of the heat exchanger storage tank, and a valve is provided on the drain pipe. The liquid inlet pipe and the drain pipe are distributed at both ends of the heat exchanger storage tank.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The self-cleaning system, through its design that cleans the liquid storage tank, inlet pipe, and outlet pipe, enables the internal cleaning of the plate heat exchanger. This internal cleaning ensures that no dirt remains inside the heat exchanger pipes, thereby improving heat exchange efficiency and guaranteeing the equipment's heat exchange performance.

[0017] The backflushing system, through the design of the backflushing pump, inlet pipe, and delivery pipe, injects backflushing fluid into the heat exchanger storage tank to clean the surface of the plate heat exchanger. This surface cleaning removes dirt and deposits from the heat exchanger surface, further improving heat exchange efficiency and extending the service life of the equipment.

[0018] The two systems work together to allow for the recycling of the cleaning solution, improving cleaning efficiency and reducing waste. At the same time, the system's high degree of automation and flexible valve operation make the cleaning process more convenient and efficient.

[0019] Regular inspections and maintenance, including checking the flexibility of the opening and closing of electrically controlled valves, the first valve, and the second valve, as well as the sealing of the heat exchanger storage tank, can ensure the long-term stable operation of the system and maintain its cleanliness and efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a side view of the overall structure of this utility model;

[0022] Figure 3 This is a top view of the overall structure of this utility model;

[0023] Figure 4 This is a diagram illustrating the heat exchanger storage tank, self-cleaning system, and backflushing system of this utility model.

[0024] Figure 5 This is a diagram of the plate heat exchanger, self-cleaning system, and backflushing system of this utility model.

[0025] In the diagram: 1. Support frame; 2. Air cooler assembly; 3. Heat exchanger storage tank; 4. Heat exchanger piping; 5. Heat exchanger valve; 6. Cleaning liquid storage tank; 7. Liquid inlet pipe; 8. First valve; 9. First tee pipe; 10. Second valve; 11. Second tee pipe; 12. Interface; 13. Plate heat exchanger; 14. Backwash pump body; 15. Liquid delivery pipe; 16. Liquid inlet pipe; 17. Electrically controlled valve; 18. Drain pipe. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figure 1 - Figure 5As shown, a self-cleaning plate evaporative air cooler mainly consists of a support frame 1, an air cooler assembly 2, heat exchanger pipes 4, heat exchanger valves 5, interfaces 12, and a plate heat exchanger 13. Both the air cooler assembly 2 and the plate heat exchanger 13 are mounted on the support frame 1. The upper end of the plate heat exchanger 13 has multiple interfaces 12, and the heat exchanger pipes 4 are connected to the interfaces 12 via the heat exchanger valves 5. This design allows the heat exchanger assembly to effectively exchange heat while maintaining the cleanliness of the equipment.

[0028] A heat exchanger storage tank 3 is provided at the plate heat exchanger 13, and its side wall is connected to the backwash pump body 14 via a liquid inlet pipe 16. The other end of the backwash pump body 14 is connected to a liquid delivery pipe 15, and both the liquid delivery pipe 15 and the liquid inlet pipe 16 are equipped with electrically controlled valves 17. By injecting backwash fluid into the heat exchanger storage tank 3 through the backwash pump body 14, the surface of the plate heat exchanger 13 can be cleaned. This backwashing mechanism can effectively remove dirt from the surface of the heat exchanger and ensure heat exchange efficiency.

[0029] Two interfaces 12 are respectively equipped with a first tee pipe 9 and a second tee pipe 11. The first tee pipe 9 is connected to one heat exchanger pipe 4 and the inlet pipe 7, while the second tee pipe 11 is connected to another heat exchanger pipe 4 and the drain pipe 18. The outer ends of the inlet pipe 7 and the drain pipe 18 are connected to a cleaning storage tank 6, and a first valve 8 and a second valve 10 are respectively installed on both. The cleaning operation of the interior of the plate heat exchanger 13 can be achieved through the cleaning storage tank 6, the inlet pipe 7, and the drain pipe 18. This design ensures the cleanliness of the heat exchanger interior, thereby extending the service life of the equipment.

[0030] The plate heat exchanger 13 is placed in the heat exchanger storage tank 3, with a support on its side wall and bolted to the tank. Sealing caps are connected to both ends of the storage tank via flanges and bolts, and sealing rings are provided at the connection points between the caps and the tank. This structural design ensures the airtightness of the heat exchanger storage tank 3 and prevents liquid leakage.

[0031] The heat exchanger storage tank 3 and the cleaning liquid storage tank 6 are mounted on the support frame 1 via brackets. The cleaning liquid storage tank 6 stores cleaning liquid within its pipes. The inlet pipe 7 and outlet pipe 18 are connected to the cleaning liquid storage tank 6 via connecting flanges and bolts. A branch pipe is provided on the side wall of the outlet pipe 18, which is connected to a water pump. This design allows for effective recycling of the cleaning liquid, improving cleaning efficiency.

[0032] Both the first tee pipe 9 and the second tee pipe 11 are bolted to the heat exchanger storage tank 3, and the connection is sealed with sealant. The first valve 8 and the second valve 10 are both electrically controlled ball valves. This design allows for more flexible valve operation and improves the system's automation level.

[0033] The backwash pump body 14 is mounted on the support frame 1 via a bracket, and is connected to the inlet pipe 15 and the outlet pipe 16 via connecting flanges and bolts. The electrically controlled valve 17 is fixed to the inlet pipe 15 and the outlet pipe 16 via connecting flanges and bolts, and is an electrically controlled butterfly valve. This design allows for more precise control of the backwash pump body 14, improving the backwashing effect.

[0034] A drain pipe with a valve is provided at the lower end of the heat exchanger storage tank 3. The liquid inlet pipe 16 and the drain pipe are located at both ends of the heat exchanger storage tank 3. This design makes the maintenance of the heat exchanger storage tank 3 more convenient and allows for the timely removal of deposited dirt.

[0035] To ensure the storage tank contains an adequate amount of cleaning solution, an initial check is necessary. Once sufficient cleaning solution is confirmed, the next step is to open the electrically controlled valve 17 and start the backwash pump 14. The backwash pump 14 injects backwash solution into the heat exchanger storage tank 3 to clean the surface of the plate heat exchanger 13. Before backwashing, the first valve 8 and the second valve 10 must be opened to allow the cleaning solution to be smoothly injected into the interior of the plate heat exchanger 13 through the inlet pipe 7. After injection, the first valve 8 is closed, while the second valve 10 remains open, allowing the cleaning solution to drain through the drain pipe 18, thus achieving the goal of cleaning the interior of the plate heat exchanger 13.

[0036] A branch pipe of drain pipe 18 connects to a water pump, a design that ensures the cleaning solution can be recycled, thereby improving cleaning efficiency. To ensure long-term stable operation of the system, the operation of the electrically controlled valve 17, the first valve 8, and the second valve 10 should be checked regularly to ensure they operate smoothly and correctly. Additionally, the heat exchanger storage tank 3 should be checked for leaks. To maintain system cleanliness and efficiency, drain pipes and valves should be cleaned regularly to remove accumulated dirt. After all cleaning work is completed, all valves should be closed, and the backwash pump 14 should be stopped. Finally, ensure that all connecting flanges and bolt connections are leak-free to guarantee the system's sealing and safety.

[0037] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning plate evaporative air cooler, comprising a support frame (1), an air cooler assembly (2), heat exchanger pipes (4), heat exchanger valves (5), interfaces (12), and a plate heat exchanger (13), wherein the air cooler assembly (2) and the plate heat exchanger (13) are mounted on the support frame (1), and the upper end of the plate heat exchanger (13) is provided with multiple interfaces (12), and the heat exchanger pipes (4) are installed at the interfaces (12) through the heat exchanger valves (5), characterized in that: The plate heat exchanger (13) is provided with a heat exchanger storage tank (3), and the side wall of the heat exchanger storage tank (3) is connected to a backwash pump body (14) through a liquid inlet pipe (16). The other end of the backwash pump body (14) is provided with a liquid delivery pipe (15). Electrically controlled valves (17) are installed on the liquid delivery pipe (15) and the liquid inlet pipe (16). Backwash liquid is input into the heat exchanger storage tank (3) through the backwash pump body (14) to achieve cleaning of the surface of the plate heat exchanger (13). The two interfaces (12) are respectively equipped with a first tee pipe (9) and a second tee pipe (11). The first tee pipe (9) is connected to a heat exchanger pipe (4) and an inlet pipe (7) respectively. The second tee pipe (11) is connected to another heat exchanger pipe (4) and an outlet pipe (18) respectively. The outer ends of the inlet pipe (7) and the outlet pipe (18) are connected to a cleaning storage tank (6). The inlet pipe (7) and the outlet pipe (18) are respectively equipped with a first valve (8) and a second valve (10). The cleaning operation inside the plate heat exchanger (13) is realized through the cleaning storage tank (6), the inlet pipe (7), and the outlet pipe (18).

2. The self-cleaning plate evaporative air cooler according to claim 1, characterized in that: The plate heat exchanger (13) is placed in the heat exchanger storage tank (3). The side wall of the plate heat exchanger (13) is provided with a bracket, which is installed on the heat exchanger storage tank (3) by bolts. Both ends of the heat exchanger storage tank (3) are connected to sealing caps by flanges and bolts. A sealing ring is provided at the connection between the sealing cap and the heat exchanger storage tank (3).

3. A self-cleaning plate evaporative air cooler according to claim 2, characterized in that: The heat exchanger storage tank (3) and the cleaning liquid storage tank (6) are mounted on the support frame (1) by brackets. The cleaning liquid storage tank (6) contains cleaning liquid. The inlet pipe (7) and the outlet pipe (18) are connected to the cleaning liquid storage tank (6) by connecting flanges and bolts. The side wall of the outlet pipe (18) is provided with a branch pipe, which is connected to a water pump.

4. A self-cleaning plate evaporative air cooler according to claim 3, characterized in that: The first three-way pipe (9) and the second three-way pipe (11) are both fixed to the heat exchanger storage tank (3) by bolts, and sealant is injected at the connection. The first valve (8) and the second valve (10) are both electrically controlled ball valves.

5. A self-cleaning plate evaporative air cooler according to claim 4, characterized in that: The backwash pump body (14) is mounted on the support frame (1) by a bracket. The backwash pump body (14) is connected to the infusion pipe (15) and the inlet pipe (16) by connecting flanges and bolts. The electrically controlled valve (17) is fixed to the infusion pipe (15) and the inlet pipe (16) by connecting flanges and bolts. The electrically controlled valve (17) is an electrically controlled butterfly valve.

6. A self-cleaning plate evaporative air cooler according to claim 5, characterized in that: The lower end of the heat exchanger storage tank (3) is provided with a drain pipe and a valve is provided on the drain pipe. The liquid inlet pipe (16) and the drain pipe are distributed at both ends of the heat exchanger storage tank (3).

Images