A large-flow air cooling device based on plate heat exchanger

Abstract

The utility model belongs to plate heat exchanger technical field especially relates to a big flow air cooling device based on plate heat exchanger, including plate heat exchanger core body, plate heat exchanger core body includes one board piece, two board pieces, and plate heat exchanger core body is composed by the alternation of a plurality of one board piece, two board pieces, and one board piece, two board piece both sides are provided with the convex surface, the concave surface. Through the alternation of one board piece and two board pieces, the convex surface of one board piece and the concave surface of two board pieces form the air flow channel, and the cross section space of air flow channel is greater than liquid flow channel, the design significantly widens the passage of air circulation, effectively reduces the resistance of big flow air in the flow channel, ensures that air can flow smoothly, can quickly, fully take away heat, satisfies the cooling demand of big flow air, greatly improves the working efficiency and cooling effect of cooling device, and is applicable to the industrial scene with higher requirement for big flow air cooling.

Description

Technical Field

[0001] This utility model belongs to the technical field of plate heat exchangers, and in particular relates to a high-flow-rate air cooling device based on a plate heat exchanger. Background Technology

[0002] In industrial production, it is often necessary to cool large volumes of air, such as in the cooling of exhaust gas from chemical reactors, the cooling of air intake for generator sets, and the ventilation and cooling of metallurgical furnaces.

[0003] However, traditional air cooling devices mostly use shell-and-tube heat exchangers or ordinary plate heat exchangers, which have the following technical drawbacks: shell-and-tube heat exchangers have low heat exchange efficiency, are bulky, occupy a large area, and experience significant pressure drop and high energy consumption under high flow conditions; ordinary plate heat exchangers have a small flow channel cross-sectional area, and when the air flow is large, the resistance inside the flow channel increases, which not only affects the air flow efficiency but also reduces the heat exchange effect, resulting in insufficient cooling. This makes it impossible to remove the heat generated by the equipment in time, affecting the normal operation of the equipment, and failing to meet the requirements of large air flow, which can easily lead to airflow congestion and affect the cooling effect.

[0004] In view of this, we propose a high-flow-rate air cooling device based on a plate heat exchanger. Utility Model Content

[0005] The purpose of this invention is to provide a high-flow-rate air cooling device based on a plate heat exchanger to solve the problems mentioned in the background art.

[0006] In view of this, the present invention provides a high-flow-rate air cooling device based on a plate heat exchanger, comprising a plate heat exchanger core, wherein the plate heat exchanger core comprises a first plate and a second plate, the plate heat exchanger core being composed of a plurality of first plates and second plates stacked alternately, the first plate and the second plate having convex and concave surfaces on their sides, an air flow channel being formed between the convex surface of the first plate and the concave surface of the second plate, and a liquid flow channel being formed between the convex surface of the second plate and the concave surface of the first plate, the cross-sectional space of the air flow channel being larger than the cross-sectional space of the liquid flow channel, the air flow channels and the liquid flow channels being alternately arranged, adjacent air flow channels being interconnected, adjacent liquid flow channels being interconnected, and adjacent air flow channels and liquid flow channels being isolated from each other.

[0007] In the above technical solution, furthermore, both the No. 1 plate and the No. 2 plate have two air holes arranged vertically and two water holes arranged vertically.

[0008] In the above technical solution, further, the convex end of the first plate is connected to a water guide ring on the side of the water hole, and the side of the water guide ring is connected to the water hole of the adjacent second plate.

[0009] In the above technical solution, further, the convex end of the second plate is connected to an air guide ring on the air hole side end, and the air guide ring side end is connected to the air hole of the adjacent first plate.

[0010] In the above technical solution, further, the first plate is formed with a first convex ring by stamping the inside of the die, and the convex end of the first convex ring is the convex surface of the first plate. The second plate is formed with a second convex ring by stamping the die, and the convex end of the second convex ring is the convex end of the second plate. The convexity of the first convex ring is higher than that of the second convex ring. The outer ends of the first convex ring, the second convex ring, the water guide ring, and the air guide ring are all connected with sealing strips.

[0011] In the above technical solution, the convex end of the first plate is connected to a gas guide strip, and the convex end of the second plate is formed with multiple liquid guide strips by die stamping.

[0012] In the above technical solution, furthermore, the outer ends of the first plate and the second plate are connected to connecting rings, the outer end of the plate heat exchanger core is provided with a fixed mounting bracket, the side end of the fixed mounting bracket is provided with multiple support rods corresponding to the connecting rings, the side end of the fixed mounting bracket is provided with a pressing plate, the pressing plate is slidably connected to the outer end of the support rod, and the outer end of the support rod is threaded with a locking nut.

[0013] In this technical solution,

[0014] The beneficial effects of this utility model are:

[0015] 1. This high-flow-rate air cooling device based on a plate heat exchanger, by alternately stacking plate number one and plate number two, forms an airflow channel with the convex surface of plate number one and the concave surface of plate number two. The cross-sectional space of the airflow channel is larger than that of the liquid flow channel. This design significantly widens the airflow passage, effectively reduces the resistance of high-flow-rate air in the channel, and ensures smooth airflow. At the same time, adjacent airflow channels are interconnected, further improving the airflow efficiency, enabling rapid and sufficient heat removal to meet the cooling requirements of high-flow-rate air. This greatly improves the working efficiency and cooling effect of the cooling device, and is suitable for industrial scenarios with high requirements for high-flow-rate air cooling.

[0016] 2. This high-flow-rate air cooling device based on a plate heat exchanger features gas and liquid guide strips that effectively guide air and coolant, resulting in more uniform fluid distribution within the flow channels, reduced dead zones, increased contact area and time between the fluid and the plates, and improved heat exchange efficiency. The sealing strips at the outer ends of the first and second convex rings, the water guide ring, and the air guide ring, along with the structural design of the water guide ring and the air guide ring, effectively enhance the sealing between the air and liquid flow channels, prevent fluid leakage, ensure stable heat exchange, and further improve the heat exchange performance and reliability of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the No. 1 plate structure in this utility model;

[0019] Figure 3 This is a schematic diagram of the No. 2 plate structure in this utility model;

[0020] Figure 4 This is a schematic diagram of the side end structure in this utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of plate No. 1 and plate No. 2 in this utility model.

[0022] The markings in the diagram are as follows:

[0023] 1. Plate heat exchanger core; 2. Plate No. 1; 3. Plate No. 2; 4. Air flow channel; 5. Liquid flow channel; 6. Air hole; 7. Water hole; 8. Water guide ring; 9. Air guide ring; 10. Convex ring No. 1; 11. Convex ring No. 2; 12. Gas guide strip; 13. Liquid guide strip; 14. Fixed mounting bracket; 15. Support rod; 16. Extrusion plate. Detailed Implementation

[0024] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0025] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] Example 1: This example provides a high-flow-rate air cooling device based on a plate heat exchanger, including a plate heat exchanger core 1. The plate heat exchanger core 1 includes a first plate 2 and a second plate 3. The plate heat exchanger core 1 is composed of several first plates 2 and second plates 3 stacked alternately. The first plate 2 and the second plate 3 have convex and concave surfaces on both sides. An air flow channel 4 is set between the convex surface of the first plate 2 and the concave surface of the second plate 3. A liquid flow channel 5 is set between the convex surface of the second plate 3 and the concave surface of the first plate 2. The cross-sectional space of the air flow channel 4 is larger than that of the liquid flow channel 5. The air flow channels 4 and the liquid flow channels 5 are arranged alternately. Adjacent air flow channels 4 are interconnected, and adjacent liquid flow channels 5 are interconnected. Adjacent air flow channels 4 and liquid flow channels 5 are isolated from each other.

[0027] The plate heat exchanger core 1 is formed by alternating stacking of several No. 1 plates 2 and No. 2 plates 3. The convex and concave surfaces of the plates form air channels 4 and liquid channels 5, respectively. Air flows in the air channels 4 and coolant flows in the liquid channels 5. Heat exchange occurs through the plates, thus cooling the air. Since the cross-sectional space of the air channels 4 is larger than that of the liquid channels 5, it can accommodate a larger flow rate of air. The adjacent air channels 4 are connected, reducing airflow resistance. The adjacent liquid channels 5 are connected to ensure smooth flow of coolant. At the same time, the two are isolated from each other to prevent fluid mixing. Advantages: It meets the cooling requirements of large flow rates of air, ensures smooth flow of air and coolant, has good heat exchange effect, and can quickly reduce air temperature. It is suitable for industrial environments that require a large amount of cooled air.

[0028] Example 2: This example provides a high-flow-rate air cooling device based on a plate heat exchanger. In addition to the technical solution of the above example, it also has the following technical features: two air holes 6 and two water holes 7 are provided in the first plate 2 and the second plate 3 respectively.

[0029] Among them, the air vent 6 provides a channel for air to enter and exit. The upper air vent 6 can serve as an air inlet, and the lower air vent 6 serves as an air outlet, allowing air to enter the air flow channel 4, complete heat exchange, and then flow out. The water vent 7 provides a channel for coolant to enter and exit. The upper water vent 7 serves as a coolant inlet, and the lower water vent 7 serves as a coolant outlet, ensuring that the coolant can flow into the liquid flow channel 5 to participate in heat exchange. Advantages: It clarifies the flow path of air and coolant, ensures that the fluid can enter and exit each flow channel in an orderly manner, provides a foundation for the smooth progress of the heat exchange process, and improves the practicality and reliability of the device.

[0030] Example 3: This example provides a high-flow-rate air cooling device based on a plate heat exchanger. In addition to the technical solutions of the above examples, it also has the following technical features: the convex end of the first plate 2 is connected to a water guide ring 8 at the side end of the water hole 7, and the side end of the water guide ring 8 is connected to the water hole 7 of the adjacent second plate 3.

[0031] The water guide ring 8 connects the water holes 7 of adjacent plates 1 and 2, allowing coolant to flow from one liquid channel 5 into the adjacent liquid channel 5, thus connecting the adjacent liquid channels 5. Simultaneously, the structure of the water guide ring 8 prevents coolant from entering the air channel 4, ensuring the independence of the liquid channels 5. Advantages: It ensures smooth flow of coolant within each liquid channel 5, improving coolant utilization, while preventing coolant from mixing with air, ensuring heat exchange efficiency and normal operation of the device.

[0032] Example 4: This example provides a high-flow-rate air cooling device based on a plate heat exchanger. In addition to the technical solutions of the above examples, it also has the following technical features: the convex end of the second plate 3 is connected to the side end of the air hole 6 with an air guide ring 9, and the side end of the air guide ring 9 is connected to the air hole 6 of the adjacent first plate 2.

[0033] Among them, the air guide ring 9 connects the air holes 6 of the adjacent second plate 3 and the first plate 2, so that air can flow from one air channel 4 into the adjacent air channel 4, realizing the connection of the adjacent air channels 4. The structure of the air guide ring 9 prevents air from entering the liquid channel 5, ensuring the independence of the air channel 4. Advantages: It realizes the smooth flow of air in each air channel 4, improves the air flow efficiency and cooling effect, and at the same time avoids the mixing of air and coolant, ensuring the stable operation of the device.

[0034] Example 5: This example provides a high-flow-rate air cooling device based on a plate heat exchanger. In addition to the technical solutions of the above examples, it also has the following technical features: a first plate 2 is formed by stamping a first convex ring 10 inside the die. The protruding end of the first convex ring 10 is the convex surface of the first plate 2. A second plate 3 is formed by stamping a second convex ring 11 inside the die. The protruding end of the second convex ring 11 is the protruding end of the second plate 3. The protrusion of the first convex ring 10 is higher than that of the second convex ring 11. Sealing strips are connected to the outer ends of the first convex ring 10, the second convex ring 11, the water guide ring 8, and the air guide ring 9.

[0035] Among them, the first convex ring 10 and the second convex ring 11 form the convex surfaces of the first plate 2 and the second plate 3, respectively. Since the first convex ring 10 is more convex, the cross-sectional space of the air flow channel 4 is larger than that of the liquid flow channel 5. The sealing strip can fill the gap between the plates, enhance the sealing between the air flow channel 4 and the liquid flow channel 5, and prevent fluid leakage. Advantages: It ensures the large space characteristics of the air flow channel 4, meets the cooling requirements of large flow air, and at the same time, the good sealing ensures the efficient operation of the heat exchange process, improving the reliability and service life of the device.

[0036] Example 6: This example provides a high-flow-rate air cooling device based on a plate heat exchanger. In addition to the technical solutions of the above examples, it also has the following technical features: the convex end of the first plate 2 is connected to a gas guide strip 12, and the convex end of the second plate 3 is formed with multiple liquid guide strips 13 by die stamping.

[0037] Among them, the gas guide strip 12 guides the air to flow along a certain path in the air channel 4, making the air distribution more uniform and reducing local eddies and dead zones. The liquid guide strip 13 guides the coolant to flow in the liquid channel 5, which also makes the coolant distribution more uniform and increases the contact area with the plate. Advantages: It improves the uniformity of air and coolant flow in the channel, enhances the heat exchange effect, and further improves the cooling efficiency and heat exchange performance of the device.

[0038] Example 7: This example provides a high-flow-rate air cooling device based on a plate heat exchanger. In addition to the technical solutions of the above examples, it also has the following technical features: the outer ends of the first plate 2 and the second plate 3 are connected with connecting rings; the outer end of the plate heat exchanger core 1 is provided with a fixed mounting bracket 14; the side end of the fixed mounting bracket 14 is provided with multiple support rods 15 corresponding to the connecting rings; the side end of the fixed mounting bracket 14 is provided with a pressing plate 16; the pressing plate 16 is slidably connected to the outer end of the support rod 15; and the outer end of the support rod 15 is threaded with a locking nut.

[0039] During assembly, several No. 1 plates 2 and No. 2 plates 3 are alternately fitted onto the outer end of the support rod 15, so that the connecting ring and the support rod 15 are positioned together. Finally, the pressing plate 16 is fitted on, and the locking nut is tightened. The pressing plate 16 applies pressure to the plates, so that the plates fit tightly together. Advantages: It realizes the rapid and firm assembly of the plates, ensures the overall structural stability of the plate heat exchanger core 1, facilitates the installation, maintenance and replacement of plates of the device, and improves the practicality and maintainability of the device.

[0040] Working principle: First, several No. 1 plates 2 and No. 2 plates 3 are alternately stacked and assembled into the plate heat exchanger core 1 by fixing the mounting bracket 14, support rod 15, extrusion plate 16 and locking nut, ensuring that the plates fit tightly together and the sealing strip ensures the sealing of the flow channel.

[0041] During operation, a large flow of air requiring cooling enters the airflow channel 4 through the upper vent 6. Guided by the gas guide strip 12, it flows evenly through the airflow channel 4, exchanging heat with the plates. Simultaneously, coolant enters the liquid flow channel 5 through the upper water hole 7. Guided by the liquid guide strip 13, it flows evenly through the liquid flow channel 5, absorbing heat from the air through the plates. After heat exchange within the airflow channel 4, the air temperature decreases, and it flows out through the lower vent 6. The coolant, having absorbed heat, flows out through the lower water hole 7, achieving recycling. Due to the large cross-sectional space of the airflow channel 4 and the interconnection of adjacent airflow channels 4, airflow is smooth with low resistance, efficiently removing heat. The coolant in the liquid flow channel 5 also flows smoothly, ensuring continuous heat exchange.

[0042] During long-term use, if maintenance or replacement of the plates is required, simply loosen the locking nut, remove the pressing plate 16, and the plates can be easily removed for operation, making the operation convenient.

[0043] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A high-flow-rate air cooling device based on a plate heat exchanger, comprising a plate heat exchanger core (1), characterized in that: The plate heat exchanger core (1) includes a first plate (2) and a second plate (3). The plate heat exchanger core (1) is composed of several first plates (2) and second plates (3) stacked alternately. The first plate (2) and the second plate (3) are provided with convex and concave surfaces on both sides. An air flow channel (4) is provided between the convex surface of the first plate (2) and the concave surface of the second plate (3). A liquid flow channel (5) is provided between the convex surface of the second plate (3) and the concave surface of the first plate (2). The cross-sectional space of the air flow channel (4) is larger than that of the liquid flow channel (5). The air flow channel (4) and the liquid flow channel (5) are arranged alternately. Adjacent air flow channels (4) are interconnected. Adjacent liquid flow channels (5) are interconnected. Adjacent air flow channels (4) and liquid flow channels (5) are isolated from each other.

2. The high-flow-rate air cooling device based on a plate heat exchanger according to claim 1, characterized in that, Both the first plate (2) and the second plate (3) have two air holes (6) arranged vertically and two water holes (7) arranged vertically.

3. A high-flow-rate air cooling device based on a plate heat exchanger according to claim 2, characterized in that, The convex end of the first plate (2) is connected to a water guide ring (8) on the side of the water hole (7), and the side of the water guide ring (8) is connected to the water hole (7) of the adjacent second plate (3).

4. A high-flow-rate air cooling device based on a plate heat exchanger according to claim 2, characterized in that, The convex end of the second plate (3) is connected to the air guide ring (9) on the side of the air hole (6), and the side of the air guide ring (9) is connected to the air hole (6) of the adjacent first plate (2).

5. A high-flow-rate air cooling device based on a plate heat exchanger according to claim 4, characterized in that, The first plate (2) is formed with a first convex ring (10) by stamping the inside of the die. The convex end of the first convex ring (10) is the convex surface of the first plate (2). The second plate (3) is formed with a second convex ring (11) by stamping the die. The convex end of the second convex ring (11) is the convex end of the second plate (3). The convex of the first convex ring (10) is higher than that of the second convex ring (11). The outer ends of the first convex ring (10), the second convex ring (11), the water guide ring (8), and the air guide ring (9) are all connected with sealing strips.

6. A high-flow-rate air cooling device based on a plate heat exchanger according to claim 1, characterized in that, The convex end of the first plate (2) is connected to a gas guide strip (12), and the convex end of the second plate (3) is formed with multiple liquid guide strips (13) by die stamping.

7. A high-flow-rate air cooling device based on a plate heat exchanger according to claim 1, characterized in that, The outer ends of the first plate (2) and the second plate (3) are connected to connecting rings. The outer end of the plate heat exchanger core (1) is provided with a fixed mounting bracket (14). The side end of the fixed mounting bracket (14) is provided with multiple support rods (15) corresponding to the connecting ring. The side end of the fixed mounting bracket (14) is provided with a pressing plate (16). The pressing plate (16) is slidably connected to the outer end of the support rod (15). The outer end of the support rod (15) is threaded with a locking nut.

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