Self-cleaning high-efficiency plate heat exchanger and control method

Abstract

The application belongs to the technical field of plate heat exchangers, and particularly relates to a self-cleaning efficient plate heat exchanger, which comprises a plate heat exchanger body, an inlet and an outlet of the plate heat exchanger body are provided with a flow rate detection component cleaning device, the cleaning device is connected with the plate heat exchanger body and is used for cleaning the plate heat exchanger body, and the control system is further included, the control system is connected with the cleaning device and the flow rate detection component. The application has the beneficial effects that: the cleaning device can select different cleaning media according to the cleaning requirements, such as acidic cleaning liquid, alkaline cleaning liquid or mixed cleaning liquid, different cleaning services can be processed, and the plate heat exchanger can adapt to various cleaning requirements.

Description

Technical Field

[0001] This application belongs to the field of plate heat exchanger technology, and particularly relates to a self-cleaning high-efficiency plate heat exchanger and its control method. Background Technology

[0002] Plate heat exchangers, as a type of heat exchange device, are widely used in many industrial and civil fields such as HVAC, petrochemical, food processing, and refrigeration and heating due to their advantages of high heat exchange efficiency, compact structure, and small footprint.

[0003] During long-term operation, mineral ions, suspended solids, microorganisms, and various impurities contained in the heat exchange medium will gradually deposit on the surface of the heat exchange plates, forming fouling or scale. Scale formation directly increases the thermal resistance of the heat exchange plates, significantly reduces the overall heat exchange efficiency, and also reduces the cross-sectional area of ​​the heat exchange channels, increases the resistance to medium flow, and increases the system's energy consumption. Severe scale formation can also corrode the plate surface, accelerate the aging and failure of gaskets, shorten the overall service life of the equipment, and increase the operating and maintenance costs.

[0004] Currently, the main methods for cleaning and maintaining plate heat exchangers include shutdown disassembly and cleaning, chemical cleaning, and external equipment flushing. Shutdown disassembly and cleaning requires disassembling the entire heat exchanger and manually cleaning the surface of each plate one by one. This process is cumbersome, involves long downtime, and frequent disassembly and assembly can easily cause problems such as damage to gaskets and plate deformation, increasing the risk of equipment failure. Furthermore, the cleaning requirements vary depending on the application of the plate heat exchanger, requiring different cleaning solutions. However, existing cleaning equipment cannot solve these problems and needs to be improved. Summary of the Invention

[0005] The purpose of this application is to provide a self-cleaning, high-efficiency plate heat exchanger and its control method, which can solve the above-mentioned problems.

[0006] The purpose of this application is to provide a self-cleaning, high-efficiency plate heat exchanger, comprising: The plate heat exchanger body is equipped with flow rate detection components at its inlet and outlet. A cleaning device, connected to the plate heat exchanger body and used to clean it; This also includes a control system, which is connected to the cleaning device and the flow rate detection component.

[0007] The above-described self-cleaning high-efficiency plate heat exchanger and control method, through the combined use of the cleaning device and the control system, can achieve automatic cleaning of the plate heat exchanger. Furthermore, the cleaning device of this application can select different cleaning media according to cleaning needs, such as acidic cleaning fluid, alkaline cleaning fluid, or mixed cleaning fluid, to handle different cleaning tasks. It has a wide range of applications and can be adapted to plate heat exchangers with various cleaning requirements. Through a flow rate detector or other equipment for detecting blockages, the cleaning requirements can be fed back to the control system. Operators can then control the cleaning device to clean the plate heat exchanger body through the control system.

[0008] Furthermore, the cleaning device includes: Water supply device for supplying cleaning liquid; A cleaning liquid supply device for storing different cleaning media; The mixing tank is connected at one end to a water supply device and a clean liquid supply device, and at the other end to a plate heat exchanger. The mixing chamber is also connected to a bubble generating device.

[0009] The cleaning device includes a water supply device and a cleaning liquid supply device. The water supply device is used to provide cleaning water, and the cleaning liquid supply device is used to provide cleaning medium. The mixing tank is used to mix and stir the water and the cleaning medium. The mixed liquid is then transported to the plate heat exchanger through pipelines. Alternatively, it can be mixed again with compressed air generated by the bubble generating device before being transported to clean the heat exchanger. The mixing tank contains a stirrer, and its specific structure, along with the bubble generating device, is existing technology and will not be described in detail. The above structure can achieve uniform and precise mixing of water and cleaning medium.

[0010] Furthermore: the water supply device includes: a storage tank, a first conduit, a first control valve connected to the first conduit, and a first pump body; The cleaning liquid supply device includes: multiple cleaning tanks, multiple second conduits, a second control valve connected to the second conduits, and a second pump body; The first control valve, the first pump body, the second control valve, and the second pump body are all connected to the control system.

[0011] In this application, a liquid storage tank is used to hold and store water, and a cleaning tank is used to hold and store cleaning media. Both the liquid storage tank and the cleaning tank are provided with an addition port for adding water and cleaning media. Users can add water and cleaning media to the liquid storage tank and cleaning tank through the addition port, or they can directly install pipes to inject the media. A first conduit and a first pump body work together to transport water from the liquid storage tank, while a first control valve is used to control the connection and closure of the first pump body. A second conduit and a second pump body work together to transport cleaning media from the cleaning tank. Each cleaning tank is connected to a corresponding second pump body, and each second pump body is equipped with a second control valve. By opening and closing multiple second control valves, different types of cleaning media can be switched, so that different cleaning methods can be selected according to needs to adapt to different requirements.

[0012] Furthermore, the control system includes: A first flow sensor is installed on the first conduit and is used to calculate the amount of water flowing through it; A second flow sensor is installed on the second conduit and is used to calculate the amount of cleaning medium flowing through it; The control panel allows users to input and select the ratio of water to cleaning media. The controller connects to and controls the operation of the control panel, the first flow sensor, and the second flow sensor. The user controls the first and second flow sensors to deliver the corresponding weight of water and cleaning medium according to the selected ratio by inputting the water and cleaning medium ratio into the control panel.

[0013] The first flow sensor, located on the first conduit, measures the flow rate of water in real time. The second flow sensor, located on the second conduit, measures the flow rate of the cleaning medium in real time. Through a control panel, the user can select the water-to-cleaning-medium ratio and input the desired liquid volume. The first and second flow sensors will then deliver the corresponding weights of water and cleaning medium according to the selected ratio, ensuring an accurate water-to-cleaning-medium ratio and guaranteeing the resulting mixed cleaning solution meets the required cleaning specifications. The user can also set new ratio values ​​on the control panel, instructing the first and second flow sensors to deliver the required volume. The controller will close the first and second control valves. If the user needs to add multiple cleaning media, the second control valve can be opened in turn. After adding one type of cleaning media, the corresponding second control valve is closed, and the second control valve for the next type of cleaning media is opened, and so on, until all cleaning media are added. This structure can flexibly add corresponding cleaning media according to different user needs. It can also automatically add the corresponding amount of cleaning media according to the amount of water added, thereby quickly producing different cleaning liquids. By obtaining a precise ratio, it avoids low cleaning efficiency due to inaccurate ratio or unnecessary corrosion inside the plate heat exchanger due to excessive cleaning media.

[0014] Furthermore, the controller includes: The first controller is used to receive the ratio value from the control panel and control the operation of the first motor that drives the first pump body. The second controller is used to control the operation of the second motor that drives the second pump body. The first controller is connected to the second controller and controls the operation of the second controller. The first controller controls the operation of the first pump body according to the ratio value input by the user. At the same time, the first controller controls the operation of the second controller. The second controller controls the operation of the second pump body according to the selected ratio value based on the command sent by the first controller.

[0015] The first pump body is controlled by the first motor, and the second pump body is controlled by the second motor. For better adjustment, the inner diameters of the first and second conduits are the same. During control, the first controller controls the operation of the first pump body through the first motor, and the second controller controls the operation of the second pump body through the second motor. The first controller is also connected to the second controller, and the first controller can control the operation of the second controller. When the first controller controls the operation of the first motor according to the ratio value on the control panel, the first controller can also control the second controller to control the operation of the second motor. While controlling the operation of the second motor, the second controller can also adjust the second motor according to the ratio value, so that the operation of the first motor and the second motor can be linked together, thereby ensuring the accuracy of the ratio.

[0016] Furthermore, the controller also includes a comparison module, which receives a first flow value from a first flow sensor and a second flow value from a second flow sensor, compares the first flow value and the second flow value to obtain a comparison value, compares the comparison value with a selected matching ratio value to obtain a difference value, and sends the difference value to a first controller and a second controller. The first controller controls the first motor to adjust its speed based on the difference value, and simultaneously controls the second controller to operate based on the difference value. The second controller controls the speed of the second motor based on the received difference value and the matching ratio value.

[0017] The comparison module receives the first flow value from the first flow sensor and the second flow value from the second flow sensor, compares the first and second flow values ​​to obtain a comparison value, compares the comparison value with the selected mixing ratio to obtain a difference, and sends the difference to the first and second controllers. The first controller controls the first motor to adjust its speed based on the difference, and simultaneously controls the operation of the second controller based on the difference. The second controller controls the speed of the second motor based on the received difference and the mixing ratio. This effectively reduces the impact of errors, improves the mixing accuracy between water and cleaning medium, and thus makes the cleaning fluid closer to the required mixing ratio.

[0018] Meanwhile, the aforementioned comparison module can be used to detect and correct the process of water and cleaning medium being transported by the first and second pump bodies in real time. By changing the speed of the first and second motors, the transport rate of water and cleaning medium can be ensured, thereby ensuring the accuracy of the ratio of water and cleaning medium in the mixing process, so that the cleaning solution is produced strictly according to the ratio value input by the user.

[0019] Furthermore, the control panel is also equipped with a cleaning medium selection component, which is connected to multiple second control valves. The cleaning medium selection component is used for users to select and confirm the delivery of different cleaning media to the mixing tank on the control panel. When the user selects one of the cleaning media, the second control valve on the corresponding second conduit of the cleaning media opens, and the other second control valves close.

[0020] By setting the cleaning medium selection component, multiple cleaning media can be added on the control panel, thus achieving a variety of cleaning solutions to meet various cleaning needs. When users need multiple cleaning media, they can input the corresponding ratio values ​​on the control panel. The ratio includes the proportion of water to multiple cleaning media and the corresponding total amount. At this time, multiple second control valves will open in turn. After adding one cleaning medium, the corresponding second control valve will close and the second control valve of the next cleaning medium to be added will open until all cleaning media have been added. The corresponding cleaning media can be flexibly added according to different user needs. It can also automatically add the corresponding amount of multiple cleaning media according to the amount of water added. It can quickly produce different cleaning solutions and ensure that the ratio of water to multiple cleaning media in the produced cleaning solution is accurate.

[0021] Furthermore, this application also provides a control method for a self-cleaning high-efficiency plate heat exchanger, comprising the following steps: 1) Cleaning preparation: Water is delivered to the storage tank, and the corresponding cleaning medium is delivered to the corresponding cleaning tank; 2) Operation: With the first and second pumps in the off state, set and input the water-to-cleaning-medium ratio on the control panel, and select the cleaning medium to be mixed through the cleaning medium selection component; 3) Adjustment: The control system controls the operation of the first pump body and the second pump body to deliver water and cleaning medium. When the liquid level reaches the set value, the first control valve and the second control valve are closed. 4) Mixing: Water and cleaning medium are delivered to the mixing tank, the stirring device is started and stirred. After stirring is completed, a cleaning liquid is formed. At the same time, the bubble generating device is turned on to remix compressed air into the cleaning liquid to form a bubble flow. 5) Cleaning: The bubble-mixed liquid is delivered to the inside of the plate heat exchanger body to clean the plate heat exchanger body.

[0022] The beneficial effects of this application are: 1. By setting up a cleaning device, different cleaning media can be selected according to the cleaning needs, such as acidic cleaning solution, alkaline cleaning solution or mixed cleaning solution, which can handle different cleaning businesses and adapt to various cleaning needs of plate heat exchangers. 2. By setting up a cleaning device, the corresponding cleaning medium can be flexibly added according to the different needs of users. It can also automatically add the corresponding amount of cleaning medium according to the amount of water added, so as to quickly produce different cleaning liquids. 3. The comparison module described above can be used to monitor and correct the process of water and cleaning medium being transported by the first and second pump bodies in real time. By changing the speed of the first and second motors, the delivery rate of water and cleaning medium can be ensured, thereby ensuring the accuracy of the water and cleaning medium mixing ratio. This ensures that the cleaning solution is prepared strictly according to the ratio value input by the user. By obtaining a precise ratio, it is possible to avoid low cleaning efficiency due to inaccurate mixing or unnecessary corrosion of the plate heat exchanger due to excessive cleaning medium. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of a plate heat exchanger. Figure 3 This is a structural block diagram of the present invention.

[0024] The reference numerals in the figure are as follows: 100, plate heat exchanger body; 200, water supply device; 210, liquid storage tank; 220, first conduit; 230, first control valve; 240, first pump body; 250, first motor; 300, cleaning liquid supply device; 310, cleaning tank; 320, second conduit; 330, second control valve; 340, second pump body; 350, second motor; 400, mixing tank; 500, bubble generating device; 600, control system; 610, first flow sensor; 620, second flow sensor; 630, control panel; 631, cleaning media selection group; 640, first controller; 650, second controller; 700, comparison module. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0026] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0027] The self-cleaning high-efficiency plate heat exchanger provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0028] Example 1:

[0029] like Figures 1 to 3 As shown, this application provides a self-cleaning, high-efficiency plate heat exchanger, comprising: The plate heat exchanger body 100 is equipped with flow rate detection components at its inlet and outlet; A cleaning device is connected to the plate heat exchanger body 100 and is used to clean it. It also includes a control system 600, which is connected to the cleaning device and the flow rate detection component.

[0030] In some embodiments of this application, such as Figure 1 As shown, by employing the aforementioned self-cleaning high-efficiency plate heat exchanger and control method, the automatic cleaning of the plate heat exchanger can be achieved through the coordinated use of the cleaning device and the control system 600. Furthermore, the cleaning device of this application can select different cleaning media according to cleaning needs, such as acidic cleaning fluid, alkaline cleaning fluid, or mixed cleaning fluid, to handle different cleaning tasks. It has a wide range of applications and can be adapted to plate heat exchangers with various cleaning requirements. Through a flow rate detector or other equipment for detecting blockages, the cleaning requirements can be fed back to the control system 600, allowing operators to control the cleaning device to clean the plate heat exchanger body 100 via the control system 600.

[0031] Example 2:

[0032] This application provides a self-cleaning high-efficiency plate heat exchanger. In addition to the above-mentioned technical features, the self-cleaning high-efficiency plate heat exchanger of this application also includes the following technical features.

[0033] like Figures 1 to 3 As shown, the cleaning device includes: Water supply device 200, used to supply cleaning liquid; Cleaning liquid supply device 300, used to store different cleaning media; The mixing tank 400 is connected at one end to the water supply device 200 and the clean liquid supply device 300, and at the other end to the plate heat exchanger. The mixing chamber 400 is also connected to a bubble generating device 500.

[0034] In this embodiment, the cleaning device includes a water supply device 200 and a cleaning liquid supply device 300. The water supply device 200 is used to provide cleaning water, and the cleaning liquid supply device 300 is used to provide cleaning medium. The mixing tank 400 is used to mix and stir the water and the cleaning medium. The mixed liquid formed after mixing is transported to the plate heat exchanger through a pipeline. Alternatively, it can be mixed again with compressed air generated by the bubble generating device 500 before being transported to clean the heat exchanger. The mixing tank 400 has a stirrer, and its specific structure, along with the bubble generating device, is existing technology and will not be described in detail. The above structure can achieve uniform and precise mixing of water and cleaning medium.

[0035] Furthermore, the water supply device 200 includes: a storage tank 210, a first conduit 220, a first control valve 230 connected to the first conduit 220, and a first pump body 240; The cleaning liquid supply device 300 includes: a plurality of cleaning tanks 310, a plurality of second conduits 320, a second control valve 330 connected to the second conduits 320, and a second pump body 340; The first control valve 230, the first pump body 240, the second control valve 330, and the second pump body 340 are all connected to the control system 600.

[0036] In this application, the liquid storage tank 210 is used to hold and store water, and the cleaning tank 310 is used to hold and store cleaning media. Both the liquid storage tank 210 and the cleaning tank 310 are provided with adding ports for adding water. Users can add water and cleaning media to the liquid storage tank 210 and the cleaning tank 310 through the adding ports, or they can directly install pipes to inject the media through the pipes. The first conduit 220 and the first pump body 240 work together to transport water from the liquid storage tank 210, while the first control valve 230 is used to control the opening and closing of the first pump body 240. The second conduit 320 and the second pump body 340 work together to transport cleaning media from the cleaning tank 310. The corresponding cleaning tank 310 is connected to a corresponding second pump body 340. Each second pump body 340 is provided with a second control valve 330. By opening and closing multiple second control valves 330, different types of cleaning media can be switched, so that different cleaning methods can be selected according to needs to adapt to different requirements.

[0037] Example 3:

[0038] This application provides a self-cleaning high-efficiency plate heat exchanger. In addition to the above-mentioned technical features, the self-cleaning high-efficiency plate heat exchanger of this application also includes the following technical features.

[0039] like Figures 1 to 3 As shown, the control system 600 includes: The first flow sensor 610 is installed on the first conduit 220 and is used to calculate the amount of water flowing through it; The second flow sensor 620 is installed on the second conduit 320 and is used to calculate the amount of cleaning medium flowing through it; Control panel 630 is used for users to input and select the ratio of water to cleaning medium; The controller is connected to and controls the operation of the control panel 630, the first flow sensor 610, and the second flow sensor 620. In this system, the user controls the first flow sensor 610 and the second flow sensor 620 to deliver the corresponding weight of water and cleaning medium according to the selected ratio by inputting the ratio of water and cleaning medium into the control panel 630.

[0040] In this embodiment, the first flow sensor 610 is located on the first conduit 220 and is used to measure the flow rate of water in real time. The second flow sensor 620 is located on the second conduit 320 and is used to measure the flow rate of the cleaning medium in real time. By setting the control panel 630, the user can select the ratio of water to cleaning medium on the control panel 630, and can also input the amount of liquid to be mixed. The first flow sensor 610 and the second flow sensor 620 will deliver the corresponding weight of water and cleaning medium according to the selected ratio, thereby ensuring the accurate ratio of water to cleaning medium and ensuring that the mixed cleaning solution meets the required ratio for cleaning. The user can also set a new ratio value on the control panel 630, so that the first flow sensor 610 and the second flow sensor 620 will deliver the corresponding weight of water and cleaning medium according to the new ratio. The system delivers the required amount of cleaning media. When the required amount is reached, the controller closes the first control valve 230 and the second control valve 330. If the user needs to add multiple cleaning media, the second control valve 330 can be opened in turn. After adding one type of cleaning media, the corresponding second control valve 330 is closed, and the second control valve 330 for the next type of cleaning media is opened, and so on, until all cleaning media are added. This structure allows for flexible addition of corresponding cleaning media according to different user needs. It can also automatically add the corresponding amount of cleaning media based on the amount of water added, thereby quickly producing different cleaning liquids. By obtaining a precise ratio, it avoids low cleaning efficiency due to inaccurate ratios or unnecessary corrosion of the plate heat exchanger due to excessive cleaning media.

[0041] Example 4:

[0042] This application provides a self-cleaning high-efficiency plate heat exchanger. In addition to the above-mentioned technical features, the self-cleaning high-efficiency plate heat exchanger of this application also includes the following technical features.

[0043] like Figures 1 to 3 As shown, the controller includes: The first controller 640 is used to receive the ratio value from the control panel 630 and control the operation of the first motor 250 that drives the first pump body 240. The second controller 650 is used to control the operation of the second motor 350 that drives the second pump body 340. The first controller 640 is connected to the second controller 650 and controls the operation of the second controller 650. The first controller 640 controls the operation of the first pump body 240 according to the ratio value input by the user. At the same time, the first controller 640 controls the operation of the second controller 650. The second controller 650 controls the operation of the second pump body 340 according to the selected ratio value based on the command sent by the first controller 640.

[0044] In this embodiment, the first pump body 240 is controlled by the first motor 250, and the second pump body 340 is controlled by the second motor 350. For better adjustment, the inner diameters of the first conduit 220 and the second conduit 320 are the same. During control, the first controller 640 controls the operation of the first pump body 240 through the first motor 250, and the second controller 650 controls the operation of the second pump body 340 through the second motor 350. The first controller 640 is also connected to the second controller 650, and the first controller 640 can control the operation of the second controller 650. When the first controller 640 controls the first motor 250 to run according to the ratio value of the control panel 630, the first controller 640 can also control the second controller 650 to control the operation of the second motor 350. While controlling the operation of the second motor 350, the second controller 650 can also adjust the second motor 350 according to the ratio value, so that the operation of the first motor 250 and the second motor 350 can be interconnected, thereby ensuring the accuracy of the ratio.

[0045] Furthermore, the controller also includes a comparison module 700, which receives the first flow value from the first flow sensor 610 and the second flow value from the second flow sensor 620, compares the first flow value and the second flow value to obtain a comparison value, compares the comparison value with a selected matching value to obtain a difference value, and sends the difference value to the first controller 640 and the second controller 650. The first controller 640 controls the first motor 250 to adjust its speed according to the difference value, while simultaneously controlling the second controller 650 to operate according to the difference value. The second controller 650 controls the speed of the second motor 350 according to the received difference value and the matching value.

[0046] The comparison module 700 receives the first flow value from the first flow sensor 610 and the second flow value from the second flow sensor 620, compares the first and second flow values ​​to obtain a comparison value, compares the comparison value with the selected mixing ratio to obtain a difference value, and sends the difference value to the first controller 640 and the second controller 650. The first controller 640 controls the first motor 250 to adjust its speed according to the difference value, and simultaneously controls the second controller 650 to operate according to the difference value. The second controller 650 controls the speed of the second motor 350 according to the received difference value and the mixing ratio value. This can effectively reduce the influence of errors, improve the mixing accuracy between water and cleaning medium, and thus make the cleaning fluid closer to the required mixing ratio value.

[0047] Meanwhile, the comparison module 700 can be used to detect and correct the process of water and cleaning medium being transported by the first pump body 240 and the second pump body 340 in real time. By changing the speed of the first motor 250 and the second motor 350, the transport rate of water and cleaning medium can be ensured, thereby ensuring the accuracy of the ratio of water and cleaning medium in the mixing process, so that the cleaning solution is produced strictly according to the ratio value input by the user.

[0048] Example 5:

[0049] This application provides a self-cleaning high-efficiency plate heat exchanger. In addition to the above-mentioned technical features, the self-cleaning high-efficiency plate heat exchanger of this application also includes the following technical features.

[0050] like Figures 1 to 3 As shown, the control panel 630 is also equipped with a cleaning medium selection component 631. The cleaning medium selection component 631 is connected to multiple second control valves 330. The cleaning medium selection component 631 is used for the user to select and confirm the delivery of different cleaning media to the mixing tank 400 on the control panel 630. When the user selects one of the cleaning media, the second control valve 330 on the second conduit 320 of the corresponding cleaning medium opens, and the other second control valves 330 close.

[0051] In this embodiment, by setting a cleaning medium selection component, multiple cleaning media can be added to the control panel 630, thereby achieving the versatility of cleaning solutions and meeting various cleaning needs. When the user needs multiple cleaning media, they can input the corresponding ratio value on the control panel 630. The ratio includes the ratio of water to multiple cleaning media and the corresponding total amount. At this time, multiple second control valves 330 will open in turn. After adding one cleaning medium, the corresponding second control valve 330 is closed, and the second control valve 330 for the next cleaning medium to be added is opened until all cleaning media are added. The corresponding cleaning media can be flexibly added according to different user needs, and multiple cleaning media can also be automatically added according to the amount of water added. This can quickly produce different cleaning solutions and ensure that the ratio of water to multiple cleaning media in the produced cleaning solution is accurate.

[0052] Example 6:

[0053] This application also provides a control method for a self-cleaning high-efficiency plate heat exchanger, including the following steps: 1) Cleaning preparation: Water is delivered to the storage tank 210, and the corresponding cleaning medium is delivered to the corresponding cleaning tank 310; 2) Operation: The first pump body 240 and the second pump body 340 are in the off state. Set and input the ratio of water to cleaning medium on the control panel 630, and select the cleaning medium to be mixed through the cleaning medium selection component 631. 3) Adjustment: The control system 600 controls the operation of the first pump body 240 and the second pump body 340 to deliver water and cleaning medium. When the liquid level reaches the set value, the first control valve 230 and the second control valve 330 are closed. 4) Mixing: Water and cleaning medium are delivered to the mixing tank 400. The stirring device is started and stirred. After stirring, a cleaning liquid is formed. At the same time, the bubble generating device 500 is turned on to remix compressed air into the cleaning liquid to form a bubble flow. 5) Cleaning: The bubble-mixed liquid is delivered into the plate heat exchanger body 100 to clean the plate heat exchanger body 100.

[0054] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof 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. Without further limitations, 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 that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0055] The embodiments of this application have been described above with reference to the accompanying drawings. However, 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 self-cleaning, high-efficiency plate heat exchanger, characterized in that: include: The plate heat exchanger body (100) is equipped with flow rate detection components at its inlet and outlet; A cleaning device is connected to the plate heat exchanger body (100) and used to clean it; It also includes a control system (600), which is connected to the cleaning device and the flow rate detection component.

2. The self-cleaning high-efficiency plate heat exchanger according to claim 1, characterized in that: The cleaning device includes: A water supply device (200) is used to supply cleaning liquid; A cleaning liquid supply device (300) is used to store different cleaning media; A mixing tank (400) is connected at one end to a water supply device (200) and a clean liquid supply device (300), and at the other end to a plate heat exchanger. The mixing chamber (400) is also connected to a bubble generating device (500).

3. The self-cleaning high-efficiency plate heat exchanger according to claim 2, characterized in that: The water supply device (200) includes: a storage tank (210), a first conduit (220), a first control valve (230) connected to the first conduit (220), and a first pump body (240); The cleaning liquid supply device (300) includes: a plurality of cleaning tanks (310), a plurality of second conduits (320), a second control valve (330) connected to the second conduits (320), and a second pump body (340); The first control valve (230), the first pump body (240), the second control valve (330), and the second pump body (340) are all connected to the control system (600).

4. The self-cleaning high-efficiency plate heat exchanger according to claim 3, characterized in that: The control system (600) includes: A first flow sensor (610) is installed on the first conduit (220) and used to calculate the amount of water flowing through it; A second flow sensor (620) is disposed on the second conduit (320) and used to calculate the amount of cleaning medium flowing through it; Control panel (630) for users to input and select the ratio of water to cleaning medium; The controller is connected to and controls the operation of the control panel (630), the first flow sensor (610), and the second flow sensor (620); The user controls the first flow sensor (610) and the second flow sensor (620) to deliver the corresponding weight of water and cleaning medium according to the selected ratio by inputting the ratio of water and cleaning medium into the control panel (630).

5. A self-cleaning high-efficiency plate heat exchanger according to claim 4, characterized in that: The controller includes: The first controller (640) is used to receive the ratio value from the control panel (630) and control the operation of the first motor (250) that drives the first pump body (240) to work. The second controller (650) is used to control the operation of the second motor (350) that drives the second pump body (340); The first controller (640) is connected to and controls the operation of the second controller (650). The first controller (640) controls the operation of the first pump body (240) according to the ratio value input by the user. At the same time, the first controller (640) controls the operation of the second controller (650). The second controller (650) controls the operation of the second pump body (340) according to the selected ratio value based on the command sent by the first controller (640).

6. A self-cleaning high-efficiency plate heat exchanger according to claim 5, characterized in that: The controller further includes a comparison module (700), which is used to receive the first flow value of the first flow sensor (610) and the second flow value of the second flow sensor (620), compare the first flow value and the second flow value to obtain a comparison value, compare the comparison value with the selected ratio value to obtain a difference value, and send the difference value to the first controller (640) and the second controller (650). The first controller (640) controls the first motor (250) to adjust the speed according to the difference value, and at the same time controls the second controller (650) to operate according to the difference value. The second controller (650) controls the speed of the second motor (350) according to the received difference value and the ratio value.

7. A self-cleaning high-efficiency plate heat exchanger according to claim 6, characterized in that: The control panel (630) is also provided with a cleaning medium selection component (631). The cleaning medium selection component (631) is connected to multiple second control valves (330). The cleaning medium selection component (631) is used for the user to select and confirm the delivery of different cleaning media to the mixing tank (400) on the control panel (630). When the user selects one of the cleaning media, the second control valve (330) on the corresponding second conduit (320) of the cleaning medium is opened, and the other second control valves (330) are closed.

8. A control method for the self-cleaning high-efficiency plate heat exchanger as described in claims 1-7, characterized in that, Includes the following steps: 1) Cleaning preparation: Water is delivered to the storage tank (210), and the corresponding cleaning medium is delivered to the corresponding cleaning tank (310); 2) Operation: The first pump body (240) and the second pump body (340) are in the closed state. Set and input the ratio of water to cleaning medium on the control panel (630), and select the cleaning medium to be mixed through the cleaning medium selection group (631). 3) Adjustment: The control system (600) controls the operation of the first pump body (240) and the second pump body (340) to deliver water and cleaning medium. When the liquid value reaches the set value, the first control valve (230) and the second control valve (330) are closed. 4) Mixing: Water and cleaning medium are delivered to the mixing tank (400), the stirring device is started and stirred. After stirring is completed, a cleaning liquid is formed. At the same time, the bubble generating device (500) is turned on to remix compressed air into the cleaning liquid to form a bubble flow. 5) Cleaning: The bubble-mixed liquid is delivered to the inside of the plate heat exchanger body (100) to clean the plate heat exchanger body (100).

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