Filter screen dust removal method of liquid cooling unit and liquid cooling unit

Abstract

The invention provides a filter screen dust removal method of a liquid cooling unit and the liquid cooling unit. The filter screen dust removal method for the liquid cooling unit comprises the steps that filter screen dust accumulation characteristics of the liquid cooling unit are detected, and the filter screen dust accumulation characteristics comprise at least one of the pressure difference between an air inlet and an air outlet of the liquid cooling unit, the filter screen weight of the liquid cooling unit, operation parameters and environment parameters of the liquid cooling unit and a filter screen image of the liquid cooling unit; controlling a fan of the liquid cooling unit to rotate reversely under the condition that dust removal is determined according to the dust retention characteristics; according to the method, the dust accumulation characteristic of the filter screen is monitored in real time, the fan is automatically triggered to rotate reversely for cleaning, the dust accumulation problem of the filter screen can be found and treated in time, and system operation is prevented from being affected by filter screen blockage.

Description

Technical Field

[0001] This application relates to the technical field of liquid cooling units, and particularly to a method for filtering and removing dust from a liquid cooling unit and a liquid cooling unit. Background Art

[0002] In an energy storage system, a liquid cooling unit provides coolant through a refrigeration cycle to control the temperature of the energy storage system, keeping it within a reasonable temperature range to ensure the normal operation of the system. The filter screen installed on the air inlet side of the liquid cooling unit plays a key role in filtering external impurities and preventing them from entering the interior of the unit. However, as the usage time increases, the filter screen will gradually accumulate a large amount of impurities such as dust, resulting in blockage of the filter screen, reduction of the ventilation area of the liquid cooling unit, and further reduction of the heat dissipation effect of the liquid cooling system, ultimately affecting the normal operation of the entire energy storage system.

[0003] Currently, in order to ensure the dust removal effect of the filter screen, maintenance personnel need to regularly inspect the filter screen on-site and clean it according to the dust accumulation situation of the filter screen. However, this dust removal method relying on regular manual inspections has the problem of insufficient timeliness, and it is easy for the dust accumulation problem of the filter screen to deteriorate due to untimely maintenance. Summary of the Invention

[0004] This application provides a method for filtering and removing dust from a liquid cooling unit and a liquid cooling unit, aiming to solve the problem of insufficient timeliness in the existing dust removal method for liquid cooling units, which is prone to deterioration of the dust accumulation problem of the filter screen due to untimely maintenance.

[0005] In a first aspect, this application provides a method for filtering and removing dust from a liquid cooling unit, including:

[0006] Detecting the dust accumulation characteristics of the filter screen of the liquid cooling unit, where the dust accumulation characteristics of the filter screen include at least one of the pressure difference between the air inlet and the air outlet of the liquid cooling unit, the weight of the filter screen of the liquid cooling unit, the operating parameters and environmental parameters of the liquid cooling unit, and the filter screen image of the liquid cooling unit;

[0007] When it is determined to perform dust removal according to the dust accumulation characteristics, controlling the fan of the liquid cooling unit to rotate in reverse.

[0008] Optionally, the determination of performing dust removal according to the dust accumulation characteristics includes:

[0009] Determining the dust accumulation degree of the filter screen according to the dust accumulation characteristics;

[0010] When the dust accumulation degree of the filter screen reaches a preset dust accumulation degree, determining to perform dust removal.

[0011] Optionally, the determination of the dust accumulation degree of the filter screen according to the dust accumulation characteristics includes:

[0012] According to each feature in the dust accumulation characteristics of the filter screen, and the relationship model between each feature and the dust accumulation degree pre-constructed, respectively determine the initial dust accumulation degree of the filter screen corresponding to each feature;

[0013] According to the initial dust accumulation degree of the filter screen corresponding to each feature, determine the dust accumulation degree of the filter screen.

[0014] Optionally, the determining the dust accumulation degree of the filter screen according to the initial dust accumulation degree of the filter screen corresponding to each feature includes:

[0015] Determine the highest initial dust accumulation degree among the initial dust accumulation degrees as the dust accumulation degree of the filter screen; or, determine the initial dust accumulation degree with the most occurrences among the initial dust accumulation degrees as the dust accumulation degree of the filter screen.

[0016] Optionally, the determining the dust accumulation degree of the filter screen according to the dust accumulation characteristics includes:

[0017] Input the dust accumulation characteristics including the pressure difference between the air inlet and outlet of the liquid cooling unit, the weight of the filter screen of the liquid cooling unit, the operating parameters and environmental parameters of the liquid cooling unit, and the filter screen image of the liquid cooling unit into a pre-trained dust accumulation degree recognition model, and obtain the dust accumulation degree of the filter screen of the liquid cooling unit output by the dust accumulation degree recognition model.

[0018] Optionally, the controlling the fan of the liquid cooling unit to reverse includes:

[0019] Determine the rotation speed of the fan according to the dust accumulation degree of the filter screen of the liquid cooling unit;

[0020] Control the fan to reverse according to the rotation speed.

[0021] Optionally, after controlling the fan of the liquid cooling unit to reverse, the method further includes:

[0022] Determine the vibration intensity of the filter screen of the liquid cooling unit according to the dust accumulation degree of the filter screen of the liquid cooling unit;

[0023] Control the filter screen of the liquid cooling unit to vibrate according to the vibration intensity.

[0024] In a second aspect, the present application provides a liquid cooling unit, including: a controller, a housing, a filter screen disposed on the side of the housing, and a fan disposed in the housing;

[0025] The liquid cooling unit further includes at least one of the following: a pressure difference sensor, a weight sensor, a photographing device, a temperature and humidity sensor;

[0026] The controller is used to execute the filter screen dust removal method of the liquid cooling unit as described in the first aspect above and / or various possible implementation manners of the first aspect.

[0027] Optionally, the liquid cooling unit further includes: an electromagnetic excitation device disposed on the filter screen;

[0028] The electromagnetic excitation device is used to drive the filter screen to vibrate in response to the instruction of the controller.

[0029] Optionally, it further includes: a deflector;

[0030] The deflector extends downward along the filter screen and is folded to the outside of the housing.

[0031] In a third aspect, the present application provides a filter screen dust removal device for a liquid cooling unit, including:

[0032] A detection module, configured to detect the dust accumulation characteristics of the filter screen of the liquid cooling unit, where the dust accumulation characteristics of the filter screen include at least one of the pressure difference between the air inlet and the air outlet of the liquid cooling unit, the weight of the filter screen of the liquid cooling unit, the operating parameters and environmental parameters of the liquid cooling unit, and the filter screen image of the liquid cooling unit;

[0033] A control module, configured to control the fan of the liquid cooling unit to reverse when it is determined to perform dust removal according to the dust accumulation characteristics.

[0034] Optionally, the device further includes: a processing module;

[0035] The processing module is configured to determine the dust accumulation degree of the filter screen according to the dust accumulation characteristics;

[0036] The processing module is further configured to determine to perform dust removal when the dust accumulation degree of the filter screen reaches a preset dust accumulation degree.

[0037] Optionally, the processing module is further configured to respectively determine the initial dust accumulation degree of the filter screen corresponding to each feature according to each feature in the dust accumulation characteristics of the filter screen and a relationship model between each feature and the dust accumulation degree pre-constructed;

[0038] The processing module is further configured to determine the dust accumulation degree of the filter screen according to the initial dust accumulation degree of the filter screen corresponding to each feature.

[0039] Optionally, the processing module is further configured to determine the highest initial dust accumulation degree among the initial dust accumulation degrees as the dust accumulation degree of the filter screen; or determine the initial dust accumulation degree with the most occurrences among the initial dust accumulation degrees as the dust accumulation degree of the filter screen.

[0040] Optionally, the processing module is further configured to input the dust accumulation features including the pressure difference between the air inlet and the air outlet of the liquid cooling unit, the weight of the filter screen of the liquid cooling unit, the operating parameters and environmental parameters of the liquid cooling unit, and the filter screen image of the liquid cooling unit into a pre-trained dust accumulation degree recognition model, and obtain the dust accumulation degree of the filter screen of the liquid cooling unit output by the dust accumulation degree recognition model.

[0041] Optionally, the control module is further configured to determine the rotation speed of the fan according to the dust accumulation degree of the filter screen of the liquid cooling unit;

[0042] The control module is further configured to control the fan to rotate in reverse according to the rotation speed.

[0043] Optionally, the processing module is further configured to determine the vibration intensity of the filter screen of the liquid cooling unit according to the dust accumulation degree of the filter screen of the liquid cooling unit;

[0044] The control module is further configured to control the vibration of the filter screen of the liquid cooling unit according to the vibration intensity.

[0045] In a fourth aspect, the present application provides an electronic device, including: a memory, a processor;

[0046] The memory stores computer-executable instructions;

[0047] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the filter screen dust removal method of the liquid cooling unit as described in the first aspect and / or various possible implementation manners of the first aspect above.

[0048] In a fifth aspect, the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, they are used to implement the filter screen dust removal method of the liquid cooling unit as described in the first aspect and / or various possible implementation manners of the first aspect above.

[0049] In a sixth aspect, the present application provides a computer program product, including a computer program, and when the computer program is executed by a processor, it implements the filter screen dust removal method of the liquid cooling unit as described in the first aspect and / or various possible implementation manners of the first aspect above.

[0050] The filter dust removal method for the liquid cooling unit provided by this application detects the dust accumulation characteristics of the filter of the liquid cooling unit. The dust accumulation characteristics of the filter include at least one of the pressure difference between the air inlet and the air outlet of the liquid cooling unit, the weight of the filter of the liquid cooling unit, the operating parameters and environmental parameters of the liquid cooling unit, and the filter image of the liquid cooling unit. When it is determined to perform dust removal according to the dust accumulation characteristics, the fan of the liquid cooling unit is controlled to reverse; this method can timely detect and handle the dust accumulation problem of the filter by monitoring the dust accumulation characteristics of the filter in real time and automatically triggering the reverse rotation of the fan, and avoid affecting the normal operation of the system due to filter blockage. Brief Description of the Drawings

[0051] The accompanying drawings herein are incorporated into the specification and form a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0052] Figure 1 It is a schematic diagram of the application scenario of the filter dust removal method for the liquid cooling unit provided by the embodiment of this application;

[0053] Figure 2 It is a schematic flowchart of the filter dust removal method for the liquid cooling unit provided by the embodiment of this application;

[0054] Figure 3 It is a schematic structural diagram of the liquid cooling unit provided by the embodiment of this application;

[0055] Figure 4 It is a schematic structural diagram of the flow guide plate in the liquid cooling unit provided by the embodiment of this application;

[0056] Figure 5 It is a schematic structural diagram of the filter dust removal device for the liquid cooling unit provided by the embodiment of this application;

[0057] Figure 6 It is a schematic structural diagram of the electronic device provided by the embodiment of this application.

[0058] Reference Signs:

[0059] 1 - Liquid cooling unit; 2 - Cloud platform;

[0060] 11 - Housing; 12 - Filter; 13 - Fan; 14 - Pressure difference sensor; 15 - Weight sensor; 16 - Flow guide plate.

[0061] Through the above accompanying drawings, the clear embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These accompanying drawings and text descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0062] To make the objectives, technical solutions, and advantages of this application clearer, the following will clearly and completely describe the technical solutions in this application in conjunction with the accompanying drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

[0063] In the description and claims of the present invention and the above-mentioned accompanying drawings, terms such as "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0064] In the embodiments of this application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in this application should not be interpreted as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0065] The filter screen equipped on the air inlet side of the liquid cooling unit is mainly used to filter impurities in the outside air and prevent them from entering the interior of the unit. Over time, a large amount of dust and impurities will accumulate on these filter screens, resulting in blockage of the filter screens. This not only reduces the effective ventilation area of the liquid cooling unit but also weakens the heat dissipation efficiency of the liquid cooling system, and may ultimately interfere with the normal operation of the entire energy storage system.

[0066] Currently, in order to ensure that the filter screen can continue to work effectively, maintenance personnel need to be present on site regularly for inspection and perform necessary cleaning according to the accumulated dust on the filter screen. However, this method completely relies on manual regular inspections and has the problem of insufficient timeliness in response. If the maintenance work is slightly delayed, it may lead to an exacerbation of the dust accumulation on the filter screen, thereby affecting the system performance.

[0067] In view of the above problems, this application provides a method for dust removal of the filter screen of a liquid cooling unit. Figure 1 This is a schematic diagram of the scenario of the method for dust removal of the filter screen of the liquid cooling unit provided by this application. It should be noted that Figure 1 The illustration shown is only an example of the application scenario where the method for dust removal of the filter screen of the liquid cooling unit of this application can be applied, to help those skilled in the art understand the technical content of this application, but it does not mean that the embodiments of this application cannot be used in other devices, systems, environments, or scenarios.

[0068] As Figure 1As shown in the figure, the liquid cooling unit 1 is communicatively connected to the cloud platform 2, and a filter screen is provided on the air inlet side of the liquid cooling unit 1. The liquid cooling unit 1 can transmit the dust accumulation characteristic data of the filter screen to the cloud platform 2 in real time, so that the cloud platform 2 determines whether dust removal is required based on the dust accumulation data of the filter screen, and when it is determined that dust removal treatment is required, sends a corresponding control instruction to the liquid cooling unit 1. After receiving the control instruction, the liquid cooling unit 1 controls the liquid cooling unit 1 to perform a dust removal operation.

[0069] Specifically, a differential pressure sensor, a weight sensor, a temperature and humidity sensor, a photographing device, etc. are provided on the liquid cooling unit 1 and are respectively connected to the controller, and are respectively used for detecting the differential pressure between the air inlet and the air outlet of the liquid cooling unit, the weight of the filter screen of the liquid cooling unit, environmental parameters, and the filter screen image of the liquid cooling unit. The controller of the liquid cooling unit 1 can send the above-mentioned dust accumulation characteristic data and the operating parameters of the liquid cooling unit to the cloud platform 2 through a gateway.

[0070] Based on various dust accumulation characteristic data and an analysis model of the dust accumulation situation of the filter screen pre-constructed, the cloud platform 2 confirms the real-time dust accumulation state of the filter screen, judges whether automatic dust removal is required, and when it is determined to perform dust removal, sends a dust removal instruction to the liquid cooling unit 1 to control the liquid cooling unit 1 to perform a corresponding dust removal operation according to the dust removal instruction.

[0071] The filter screen dust removal method of the liquid cooling unit provided by the embodiment of the present application detects the dust accumulation characteristic data of the filter screen of the liquid cooling unit, including information such as the differential pressure between the air inlet and the air outlet, the weight of the filter screen, operating parameters, environmental conditions, and the filter screen image, and sends these dust accumulation characteristic data to the cloud platform. When the cloud platform determines that the filter screen needs to be cleaned, it receives the control instruction sent by the cloud platform to control the fan to reverse, thereby removing the dust on the filter screen; in this way, the state of the filter screen can be monitored in real time, and measures can be taken immediately when a dust accumulation problem is found to ensure that the filter screen remains clean and avoid affecting the normal operation of the system due to blockage.

[0072] The technical solution of the present application and how the technical solution of the present application solves the above technical problems will be described in detail below with specific embodiments. These specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0073] Figure 2 It is a schematic flowchart of the filter screen dust removal method of the liquid cooling unit provided by the embodiment of the present application, taking the controller of the liquid cooling unit in the Figure 1 embodiment as an example. As Figure 2 shown, the filter screen dust removal method of the liquid cooling unit provided by this embodiment includes the following steps:

[0074] S201. Detect the dust accumulation characteristics of the liquid cooling unit. The dust accumulation characteristics of the filter screen include at least one of the pressure difference between the air inlet and the air outlet of the liquid cooling unit, the weight of the filter screen of the liquid cooling unit, the operating parameters and environmental parameters of the liquid cooling unit, and the filter screen image of the liquid cooling unit.

[0075] Among them, the pressure difference between the air inlet and the air outlet of the liquid cooling unit may refer to the air pressure difference between the air inlet and the air outlet of the liquid cooling unit during operation. This pressure difference value is used to reflect the resistance of the air flowing through the filter screen. The weight of the filter screen of the liquid cooling unit may refer to the sum of the weight of the filter screen itself and the weight of pollutants such as dust and particulate matter adsorbed in the air. The operating parameters of the liquid cooling unit may be the air volume, air outlet speed, refrigeration efficiency, etc. The environmental parameters may be the temperature value and humidity value of the environment where the liquid cooling unit is located during operation. The filter screen image of the liquid cooling unit may be the image of the air inlet side surface of the filter screen.

[0076] It can be understood that dust accumulation on the filter screen will increase the ventilation resistance and cause the pressure difference between the air inlet and the air outlet to rise. Moreover, after the dust particles are intercepted by the filter screen, the weight of the filter screen is directly increased. At the same time, dust accumulation on the filter screen will directly affect the operating performance of the liquid cooling unit. For example, after the filter screen is blocked by dust, the air volume will decrease significantly. In order to maintain the air volume, the fan will increase the power, but the increase in the filter screen resistance will cause the air outlet speed to decrease instead. The radiator in the unit cannot fully contact the cold air, resulting in the heat not being discharged, the refrigeration efficiency decreasing, and the dust adhesion being aggravated in high humidity and high temperature environments. Finally, the image characteristics of the filter screen image are different under different dust accumulation states.

[0077] A pressure difference sensor is arranged between the air inlet and the air outlet of the liquid cooling unit. During the operation of the liquid cooling unit, this pressure difference sensor can obtain the pressure difference data detected between the air inlet and the air outlet. Through the weight sensor installed on the filter screen support structure of the liquid cooling unit, the total weight of the filter screen and dust after dust accumulation can be measured. Through the temperature and humidity sensors on the liquid cooling unit, the environmental parameters can be detected; through the photographing device arranged on the filter screen of the liquid cooling unit, the image of the filter screen can be taken.

[0078] Optionally, after the liquid cooling unit obtains the above dust accumulation characteristics of the filter screen of the liquid cooling unit, it can also send the dust accumulation characteristics to the cloud platform so that the cloud platform can determine whether to perform dust removal according to these dust accumulation characteristics.

[0079] S202. When it is determined to perform dust removal according to the dust accumulation characteristics, control the fan of the liquid cooling unit to reverse.

[0080] Among them, determining dust removal according to the dust accumulation characteristics can be achieved by analyzing one or more of the pressure difference between the air inlet and the air outlet of the liquid cooling unit, the weight of the filter of the liquid cooling unit, the operating parameters and environmental parameters of the liquid cooling unit, and the filter image of the liquid cooling unit, estimating the dust accumulation amount of the filter, and determining that the liquid cooling unit needs to perform dust removal when the dust accumulation amount reaches a preset threshold, that is, controlling the fan of the liquid cooling unit to reverse.

[0081] It can be understood that when the liquid cooling unit is operating normally, the fan rotates forward, and the air flow penetrates from the outside to the inside of the filter, and the dust is intercepted on the outer surface of the filter; when the liquid cooling unit performs reverse dust removal, the fan rotates in reverse, and the air flow blows out reversely from the inside to the outside of the filter, and the high-speed air flow can reverse and disperse the dust attached to the filter, so as to achieve the effect of dust removal.

[0082] When the cloud platform determines that dust removal is required according to the dust accumulation characteristics of the filter, the cloud platform generates a dust removal instruction and sends the dust removal instruction to the controller of the liquid cooling unit through the gateway. After receiving the dust removal instruction, the controller controls the fan driver to perform a reverse operation according to the dust removal instruction, and at the same time monitors the dust removal effect and feeds it back to the cloud platform.

[0083] The filter dust removal method of the liquid cooling unit provided by the embodiments of the present application detects the dust accumulation characteristics of the filter of the liquid cooling unit. The dust accumulation characteristics of the filter include at least one of the pressure difference between the air inlet and the air outlet of the liquid cooling unit, the weight of the filter of the liquid cooling unit, the operating parameters and environmental parameters of the liquid cooling unit, and the filter image of the liquid cooling unit. When it is determined to perform dust removal according to the dust accumulation characteristics, the fan of the liquid cooling unit is controlled to reverse; this method can timely discover and handle the dust accumulation problem of the filter by real-time monitoring of the dust accumulation characteristics of the filter and automatically triggering the fan to reverse for cleaning, and avoid affecting the normal operation of the system due to filter blockage.

[0084] Optionally, determining to perform dust removal according to the dust accumulation characteristics includes:

[0085] Determining the dust accumulation degree of the filter according to the dust accumulation characteristics, and determining to perform dust removal when the dust accumulation degree of the filter reaches a preset dust accumulation degree.

[0086] Among them, the preset dust accumulation degree is used to represent the maximum limit of dust accumulation that the filter can bear on the premise of ensuring the normal operation of the system, and is used to judge whether the filter needs dust removal. The dust accumulation degree can be quantified by a series of preset thresholds. For example, different pressure difference thresholds correspond to different dust accumulation degrees, and different filter weight thresholds can also correspond to different dust accumulation degrees.

[0087] It can be understood that when the value of the dust accumulation characteristic reaches or exceeds the corresponding preset threshold, it indicates that the dust accumulation degree of the filter has reached the preset dust accumulation degree, and dust removal measures need to be taken. At this time, determining to perform dust removal is to clean the filter and prevent the filter from being blocked, resulting in a reduction in the ventilation effect of the liquid cooling unit, thereby affecting the normal operation of the entire system.

[0088] In the embodiments of the present application, by detecting the dust accumulation characteristics to judge the state of the filter, the dust accumulation problem of the filter can be discovered and solved in time to ensure that the cooling efficiency and overall performance of the liquid cooling system are not affected.

[0089] In some embodiments, determining the dust accumulation degree of the filter according to the dust accumulation characteristics includes:

[0090] According to each characteristic in the dust accumulation characteristics of the filter and the relationship model between each characteristic and the dust accumulation degree pre-constructed, respectively determine the initial dust accumulation degree of the filter corresponding to each characteristic;

[0091] According to the initial dust accumulation degree of the filter corresponding to each characteristic, determine the dust accumulation degree of the filter.

[0092] In the embodiments of the present application, a multi-characteristic independent analysis method is adopted to determine the dust accumulation degree of the filter. Specifically, first, based on experimental data, historical maintenance records, etc., establish a relationship model between each characteristic and the dust accumulation degree, which is to obtain the quantitative relationship between each characteristic and the dust accumulation degree, so as to set thresholds corresponding to different characteristics for subsequent determination of the initial dust accumulation degree corresponding to each characteristic.

[0093] For example, record the dust accumulation amount of the filter under different pressure difference data to determine the mathematical relationship between the pressure difference and the dust accumulation amount, define multiple dust accumulation degree levels (such as mild, moderate, severe), set corresponding dust accumulation amount thresholds and pressure difference thresholds for each dust accumulation degree, so as to establish a correspondence relationship model between the pressure difference data and the dust accumulation degree. Similarly, based on the different dust accumulation amounts of the filter under different weight data, a correspondence relationship model between the filter weight and the dust accumulation degree can also be established, so as to obtain the weight thresholds corresponding to different dust accumulation degrees.

[0094] Based on the historical operation parameters and historical environment data of the liquid cooling unit, a relationship model between the operation parameters of the liquid cooling unit and the environmental parameters and the dust accumulation degree can be established, and this model is used to predict the dust accumulation degree corresponding to the current operation parameters of the liquid cooling unit based on the current operation parameters and current environment data of the liquid cooling unit.

[0095] It should be understood that the historical operating parameters of the liquid cooling unit may include the operating parameters of the filter screen under different dust accumulation levels. In this way, by extracting and analyzing the operating parameters of the liquid cooling unit under various dust accumulation conditions and the historical environmental data of the liquid cooling unit, the influence of the filter screen on the operating state of the liquid cooling unit under different dust accumulation levels and different environmental conditions can be obtained.

[0096] It is also possible to obtain a historical filter screen image set from the database, including images of the filter screen in a clean state and images under different dust accumulation levels, and label each historical filter screen image, extract the features of these images, such as the number of dust particles, shadow area, dust distribution, etc. Based on the extracted historical filter screen image features and the corresponding dust accumulation level labels, a relationship model between the filter screen image features and the dust accumulation level is trained using a machine learning algorithm. This model is used to calculate the similarity between the newly acquired filter screen image and the filter screen images with known dust accumulation levels, so as to determine the current dust accumulation level of the filter screen.

[0097] Then, for each dust accumulation feature, the corresponding feature value is compared with multiple preset thresholds obtained based on their respective relationship models to obtain the corresponding initial dust accumulation level. This step is performed once for each dust accumulation feature, so as to obtain a set of initial dust accumulation levels reflecting the filter screen state under different dust accumulation feature dimensions.

[0098] For example, by inputting the pressure difference data between the inlet and outlet detected in real time into the pre-constructed corresponding relationship model between the pressure difference data and the dust accumulation level, the initial filter screen dust accumulation level corresponding to the actual pressure difference data can be obtained. At the same time, by inputting the weight of the filter screen detected in real time into the corresponding relationship model between the filter screen weight and the dust accumulation level, the initial filter screen dust accumulation level corresponding to the actual filter screen weight can be obtained.

[0099] The current operating parameters and environmental parameters of the liquid cooling unit are input into the corresponding relationship model, and the initial dust accumulation level of the filter screen corresponding to these parameters is obtained through model prediction. Moreover, the real-time filter screen image of the liquid cooling unit is input into the relationship model between the filter screen image features and the dust accumulation level. By comparing the differences of multiple features between the real-time filter screen image and the historical filter screen images through this model, the dust accumulation level label of the historical filter screen image with the highest feature similarity is used as the initial dust accumulation level of the real-time filter screen image.

[0100] Finally, after obtaining the initial dust accumulation levels of the filter screen corresponding to each feature, a most representative value can be selected from the multiple initial dust accumulation levels as the overall dust accumulation level of the filter screen. This overall dust accumulation level is used to determine whether the dust accumulation level of the filter screen has reached the standard for dust removal.

[0101] Thus, through the relationship model between the dust accumulation characteristics and the dust accumulation degree of each filter screen, the initial dust accumulation degree of the filter screen under different characteristics can be obtained to determine the overall dust accumulation degree. This not only improves the accuracy of judgment but also can timely detect dust accumulation problems and prevent the further deterioration of the filter screen dust accumulation problems.

[0102] Exemplarily, a possible implementation is given here. Specifically, it includes: determining the highest initial dust accumulation degree among all the initial dust accumulation degrees as the dust accumulation degree of the filter screen; or, determining the initial dust accumulation degree with the most occurrences among all the initial dust accumulation degrees as the dust accumulation degree of the filter screen.

[0103] Among them, selecting the highest initial dust accumulation degree among all the initial dust accumulation degrees and determining it as the dust accumulation degree of the filter screen means taking the most severe level among all the characteristics as the final result. In this way, it can be ensured that even if only a certain filter screen dust accumulation characteristic reaches a relatively high dust accumulation degree, it can be processed in time to prevent overheating shutdown caused by filter screen blockage, which is suitable for energy storage systems with high safety requirements and environments where the dust distribution is uneven and prone to local blockage.

[0104] For example, if the initial dust accumulation degree is judged to be moderate dust accumulation based on the pressure difference between the inlet and outlet of the liquid cooling unit, the initial dust accumulation degree is judged to be mild dust accumulation based on the weight of the filter screen, the initial dust accumulation degree is judged to be moderate dust accumulation based on the filter screen image of the liquid cooling unit, but the initial dust accumulation degree is judged to be severe dust accumulation based on the operating parameters and environmental parameters of the liquid cooling unit, then the dust accumulation degree of the filter screen is determined to be severe.

[0105] Or, select the level that appears most frequently among all the initial dust accumulation levels. When the frequencies are the same, the higher level can be preferentially selected. In this way, the influence of a single sensor anomaly can be reduced, unnecessary maintenance triggered by misjudgment of a single characteristic can be avoided, and the maintenance cost and safety are balanced.

[0106] For example, if the initial dust accumulation degree is judged to be moderate dust accumulation based on the pressure difference between the inlet and outlet of the liquid cooling unit, the initial dust accumulation degree is judged to be mild dust accumulation based on the weight of the filter screen, the initial dust accumulation degree is judged to be moderate dust accumulation based on the filter screen image of the liquid cooling unit, and the initial dust accumulation degree is judged to be moderate dust accumulation based on the operating parameters and environmental parameters of the liquid cooling unit, then the dust accumulation degree of the filter screen is determined to be moderate.

[0107] In some other embodiments, determining the dust accumulation degree of the filter screen according to the dust accumulation characteristics includes:

[0108] Inputting the dust accumulation characteristics including the pressure difference between the inlet and outlet of the liquid cooling unit, the weight of the filter screen of the liquid cooling unit, the operating parameters and environmental parameters of the liquid cooling unit, and the filter screen image of the liquid cooling unit into a pre-trained dust accumulation degree recognition model, and obtaining the dust accumulation degree of the filter screen of the liquid cooling unit output by the dust accumulation degree recognition model.

[0109] In the embodiments of the present application, after obtaining the dust accumulation characteristics of the above liquid cooling unit, key characteristics can be extracted from these dust accumulation characteristics, such as pressure difference values, weight increments, changes in operating parameters under different environmental conditions and dust accumulation degrees, and the dust coverage area, distribution pattern, etc. extracted from the filter screen images. Then, all the extracted characteristics are input into a dust accumulation degree recognition model that has been pre-trained using historical data. Based on the input data, the dust accumulation degree recognition model calculates and outputs the dust accumulation degree of the current filter screen, such as mild, moderate, severe levels, etc.

[0110] In this way, not only can a comprehensive assessment of the dust accumulation degree of the filter screen be achieved, avoiding misjudgment of a single dust accumulation characteristic, but the model can also automatically learn the complex relationships between various dust accumulation characteristics and is applicable to scenarios where the state change of the filter screen in a complex environment is difficult to predict. For example, in a high-humidity environment, dry dust may cake, resulting in a sudden increase in pressure difference.

[0111] Exemplarily, controlling the fan of the liquid cooling unit to reverse includes:

[0112] Determine the rotation speed of the fan according to the dust accumulation degree of the filter screen of the liquid cooling unit, and control the fan to reverse according to the rotation speed.

[0113] Among them, the cloud platform can generate corresponding fan control instructions according to the calculation result of the dust accumulation degree, including information such as the target rotation speed, rotation direction (forward or reverse), and duration. The cloud platform sends the control instructions to the controller of the liquid cooling unit. Subsequently, the controller parses the received fan control instructions to obtain parameters such as the target rotation speed, rotation direction, and duration, and thus controls the fan to reverse based on these parameters.

[0114] For example, when the filter screen is moderately dust-accumulated, start the low-speed reverse mode to remove some dust; when the filter screen is severely dust-accumulated, start the high-speed reverse mode to thoroughly clean the dust on the surface of the filter screen.

[0115] In this way, the reverse control of the fan based on the dust accumulation degree of the filter screen of the liquid cooling unit realizes effective dust removal of the filter screen, reduces manual intervention, extends the service life of the filter screen, and avoids the deterioration of the filter screen dust accumulation problem.

[0116] Optionally, after controlling the fan of the liquid cooling unit to reverse, the method further includes:

[0117] Determine the vibration intensity of the filter screen of the liquid cooling unit according to the dust accumulation degree of the filter screen of the liquid cooling unit; control the vibration of the filter screen of the liquid cooling unit according to the vibration intensity.

[0118] Among them, the cloud platform generates corresponding vibration control instructions according to the calculated vibration intensity, including parameters such as vibration frequency, amplitude, and duration, and sends the vibration control instructions to the controller of the liquid cooling unit. After receiving the vibration control instructions sent by the cloud platform, the controller of the liquid cooling unit parses the instructions and determines the working parameters of the vibration device according to the instructions, so that it operates at the preset vibration intensity.

[0119] For example, when the filter screen is moderately dusty, control the filter screen to vibrate at a medium vibration frequency and amplitude to help loosen and remove some of the deposited dust; when the filter screen is severely dusty, control the filter screen to vibrate at a higher vibration frequency and amplitude to ensure that stubborn dust can be effectively shaken and removed. In this way, not only can the initial dust removal be carried out by reversing the fan, but also the cleaning effect can be further enhanced by means of vibration to ensure that the filter screen maintains a good working state.

[0120] Figure 3 The structural schematic diagram of the liquid cooling unit provided by the embodiment of the present application is shown as Figure 3 As shown, the liquid cooling unit 1 provided by the embodiment of the present application may include: a controller (not shown in the figure), a housing 11, a filter screen 12 provided on the side of the housing, and a fan 13 provided in the housing. The liquid cooling unit further includes at least one of the following: a differential pressure sensor 14, a weight sensor 15, a photographing device (not shown in the figure), a temperature and humidity sensor (not shown in the figure). The controller is used to execute the filter screen dust removal method of the liquid cooling unit described in any one of the foregoing embodiments of the present application.

[0121] In the embodiment of the present application, the differential pressure sensor 14 may be provided between the air inlet and the air outlet of the liquid cooling unit. The high-pressure end of the differential pressure sensor 14 is connected to the air inlet in front of the filter screen, and the low-pressure end is connected to the air outlet behind the filter screen. The differential pressure sensor 14 is used to detect the pressure difference between the air inlet and the air outlet of the liquid cooling unit.

[0122] The weight sensor 15 is installed on the support structure of the filter screen and is used to monitor the weight change of the filter screen. The number of photographing devices may be two, which are respectively arranged at the diagonal positions on the outer surface of the filter screen 12 and are used to photograph the image of the surface of the filter screen 12. The temperature and humidity sensor can be installed at different positions according to requirements, such as the air inlet, the air outlet, and near the filter screen, and is used to detect the environmental parameters of the liquid cooling unit.

[0123] The controller of the liquid cooling unit is used to control the fan 13 of the liquid cooling unit to reverse when it is determined to perform dust removal according to the dust accumulation characteristics. Optionally, the controller may determine the rotation speed of the fan 13 according to the dust accumulation degree of the filter screen 12 of the liquid cooling unit and control the reverse rotation of the fan 13 according to the rotation speed.

[0124] The liquid cooling unit provided by the embodiment of the present application can monitor the status of the filter screen in real time and automatically control the reverse rotation of the fan according to the dust accumulation degree of the filter screen, so as to perform dust removal treatment on the filter screen in a timely manner.

[0125] In order to enhance the dust removal effect of the filter screen of the liquid cooling unit, in some embodiments, the liquid cooling unit further includes: an electromagnetic excitation device disposed on the filter screen;

[0126] The electromagnetic excitation device is used to drive the filter screen to vibrate in response to the instruction of the controller.

[0127] Among them, the electromagnetic excitation device is installed on the frame or support structure of the filter screen to ensure that the vibration energy can be effectively transmitted to the surface of the filter screen. Optionally, the electromagnetic excitation device can respond to the instruction of the controller and drive the filter screen to vibrate according to the vibration intensity in the instruction.

[0128] Figure 4 It is a schematic structural diagram of the flow guide plate in the liquid cooling unit provided by the embodiment of the present application. Figure 4 For Figure 3 is a schematic structural diagram of the filter screen in another angle. As Figure 4 shown, in some embodiments, the liquid cooling unit 1 further includes: a flow guide plate 16. The flow guide plate 16 extends downward along the filter screen 12 and is folded to the outside of the housing 11.

[0129] Among them, the flow guide plate 16 is fixed to the filter screen 12 by bolts. A part of the flow guide plate 16 is folded to the outside of the housing 11 to form a discharge port. The flow guide plate 16 is used to guide the dust shed due to the reverse rotation of the fan and the vibration of the electromagnetic excitation device to the discharge port, ensuring that the dust can be smoothly discharged from the system and will not re-enter the filter channel or accumulate on other key components. Thereby, not only the cleaning efficiency is improved, but also the reliability and maintainability of the system are enhanced.

[0130] Figure 5 It is a schematic structural diagram of the filter screen dust removal device of the liquid cooling unit provided by the present application. As Figure 5 shown, the filter screen dust removal device 500 of the liquid cooling unit provided by this embodiment includes:

[0131] A detection module 501, configured to detect the dust accumulation characteristics of the filter screen of the liquid cooling unit, where the dust accumulation characteristics of the filter screen include at least one of the pressure difference between the air inlet and the air outlet of the liquid cooling unit, the weight of the filter screen of the liquid cooling unit, the operating parameters and environmental parameters of the liquid cooling unit, and the filter screen image of the liquid cooling unit;

[0132] A control module 502, configured to control the reverse rotation of the fan of the liquid cooling unit when it is determined to perform dust removal according to the dust accumulation characteristics.

[0133] Optionally, the device further includes: a processing module 503;

[0134] The processing module 503 is configured to determine the dust accumulation degree of the filter screen according to the dust accumulation characteristics.

[0135] The processing module 503 is further configured to determine to perform dust removal when the dust accumulation degree of the filter screen reaches a preset dust accumulation degree.

[0136] Optionally, the processing module 503 is further configured to respectively determine the initial dust accumulation degree of the filter screen corresponding to each characteristic according to each characteristic in the filter screen dust accumulation characteristics and a relationship model between each characteristic and the dust accumulation degree pre-constructed.

[0137] The processing module 503 is further configured to determine the dust accumulation degree of the filter screen according to the initial dust accumulation degree of the filter screen corresponding to each characteristic.

[0138] Optionally, the processing module 503 is further configured to determine the highest initial dust accumulation degree among the initial dust accumulation degrees as the dust accumulation degree of the filter screen; or determine the initial dust accumulation degree with the most occurrences among the initial dust accumulation degrees as the dust accumulation degree of the filter screen.

[0139] Optionally, the processing module 503 is further configured to input the dust accumulation characteristics including the pressure difference between the air inlet and the air outlet of the liquid cooling unit, the weight of the filter screen of the liquid cooling unit, the operating parameters and environmental parameters of the liquid cooling unit, and the filter screen image of the liquid cooling unit into a pre-trained dust accumulation degree recognition model, and obtain the dust accumulation degree of the filter screen of the liquid cooling unit output by the dust accumulation degree recognition model.

[0140] Optionally, the control module 502 is further configured to determine the rotation speed of the fan according to the dust accumulation degree of the filter screen of the liquid cooling unit.

[0141] The control module 502 is further configured to control the fan to rotate in reverse according to the rotation speed.

[0142] Optionally, the processing module 503 is further configured to determine the vibration intensity of the filter screen of the liquid cooling unit according to the dust accumulation degree of the filter screen of the liquid cooling unit.

[0143] The control module 502 is further configured to control the filter screen of the liquid cooling unit to vibrate according to the vibration intensity.

[0144] Figure 6 It is a schematic structural diagram of the electronic device provided by the present application. As Figure 6 shown, the present application provides an electronic device, and the electronic device 600 includes: a receiver 601, a transmitter 602, a processor 603, and a memory 604.

[0145] A receiver 601 for receiving instructions and data;

[0146] A transmitter 602 for transmitting instructions and data;

[0147] A memory 604 for storing computer-executable instructions;

[0148] A processor 603 for executing the computer-executable instructions stored in the memory 604 to implement each step performed by the filter dust removal method of the liquid cooling unit in the above embodiments. For details, reference may be made to the relevant descriptions in the filter dust removal method embodiments of the foregoing liquid cooling unit.

[0149] Optionally, the above memory 604 can be either independent or integrated with the processor 603.

[0150] When the memory 604 is independently provided, the electronic device further includes a bus for connecting the memory 604 and the processor 603.

[0151] An embodiment of the present application further provides a computer-readable storage medium storing computer-executable instructions, which are used to implement the filter dust removal method of the liquid cooling unit as described in any one of the foregoing embodiments of the present application when executed by a processor.

[0152] An embodiment of the present application further provides a computer program product, which includes a computer program that can implement the filter dust removal method of the liquid cooling unit as described in any one of the foregoing embodiments of the present application when executed by a processor.

[0153] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of devices or modules can be in electrical, mechanical or other forms.

[0154] The modules described as separate components may or may not be physically separated. The components shown as modules may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to implement the solution of this embodiment.

[0155] In addition, in each embodiment of the present application, each functional module can be integrated into a processing unit, or each module can exist physically alone, or two or more modules can be integrated into one unit. The unit formed by the above modules can be implemented in the form of hardware, or in the form of a combination of hardware and software functional units.

[0156] The integrated module implemented in the form of a software functional module can be stored in a computer-readable storage medium. The above software functional module is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute some steps of the methods described in the embodiments of the present application.

[0157] It should be understood that the above processor can be a central processing unit (Central Processing Unit, abbreviated as CPU), and can also be other general-purpose processors, digital signal processors (Digital Signal Processor, abbreviated as DSP), application specific integrated circuits (Application Specific Integrated Circuit, abbreviated as ASIC), etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in combination with the application can be directly implemented by the execution of the hardware processor, or can be implemented by the combination of the hardware and software modules in the processor.

[0158] The memory may include a high-speed random access memory (Random Access memory, abbreviated as RAM), and may also include a non-volatile memory (Non-volatile Memory, abbreviated as NVM), such as at least one disk memory, and can also be a USB flash drive, a mobile hard disk, a read-only memory, a magnetic disk or an optical disc, etc.

[0159] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

[0160] The above storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random-Access Memory (SRAM), Electrically Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic memory, flash memory, a magnetic disk or an optical disc. The storage medium can be any available medium accessible by a general-purpose or special-purpose computer.

[0161] An exemplary storage medium is coupled to the processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium can also exist as discrete components in an electronic device or a master device.

[0162] It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that this application is not limited by the described action sequence, because according to this application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.

[0163] Furthermore, it should be noted that although the steps in the flowchart are displayed sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps has no strict order limitation, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowchart can include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or sub-steps or stages of other steps.

[0164] In the above embodiments, the descriptions of the respective embodiments each have their own emphasis. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0165] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the claims.

[0166] As described above, the above are only the specific implementation manners of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the embodiments of the present application should be covered within the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope of the claims.

Claims

1. A method for filtering and dust removal of a liquid cooling unit, characterized in that, Including: Detecting the dust accumulation characteristics of the filter screen of the liquid cooling unit, where the dust accumulation characteristics of the filter screen include at least one of the pressure difference between the air inlet and the air outlet of the liquid cooling unit, the weight of the filter screen of the liquid cooling unit, the operating parameters and environmental parameters of the liquid cooling unit, and the filter screen image of the liquid cooling unit; When it is determined to perform dust removal according to the dust accumulation characteristics, controlling the fan of the liquid cooling unit to rotate in reverse.

2. The method according to claim 1, wherein The determining to perform dust removal according to the dust accumulation characteristics includes: Determining the dust accumulation degree of the filter screen according to the dust accumulation characteristics; When the dust accumulation degree of the filter screen reaches a preset dust accumulation degree, determining to perform dust removal.

3. The method according to claim 2, wherein The determining the dust accumulation degree of the filter screen according to the dust accumulation characteristics includes: According to each characteristic in the dust accumulation characteristics of the filter screen and the relationship model between each characteristic and the dust accumulation degree constructed in advance, respectively determining the initial dust accumulation degree of the filter screen corresponding to each characteristic; Determining the dust accumulation degree of the filter screen according to the initial dust accumulation degree of the filter screen corresponding to each characteristic.

4. The method according to claim 3, wherein The determining the dust accumulation degree of the filter screen according to the initial dust accumulation degree of the filter screen corresponding to each characteristic includes: Determining the highest initial dust accumulation degree among the initial dust accumulation degrees as the dust accumulation degree of the filter screen; or, determining the initial dust accumulation degree with the most occurrences among the initial dust accumulation degrees as the dust accumulation degree of the filter screen.

5. The method according to claim 2, characterized in that The determining the dust accumulation degree of the filter screen according to the dust accumulation characteristics includes: Inputting the dust accumulation characteristics including the pressure difference between the air inlet and the air outlet of the liquid cooling unit, the weight of the filter screen of the liquid cooling unit, the operating parameters and environmental parameters of the liquid cooling unit, and the filter screen image of the liquid cooling unit into a pre-trained dust accumulation degree recognition model, and obtaining the dust accumulation degree of the filter screen of the liquid cooling unit output by the dust accumulation degree recognition model.

6. The method according to any one of claims 2-5, characterized in that, The controlling the fan of the liquid cooling unit to rotate in reverse includes: Determining the rotation speed of the fan according to the dust accumulation degree of the filter screen of the liquid cooling unit; Controlling the fan to rotate in reverse according to the rotation speed.

7. The method according to any one of claims 2-5, characterized in that, After controlling the fan of the liquid cooling unit to rotate in reverse, the method further includes: Determining the vibration intensity of the filter screen of the liquid cooling unit according to the dust accumulation degree of the filter screen of the liquid cooling unit; Controlling the filter screen of the liquid cooling unit to vibrate according to the vibration intensity.

8. A liquid cooling unit, characterized in that, Including a controller, a housing, a filter screen disposed on the side of the housing, and a fan disposed inside the housing; The liquid cooling unit further includes at least one of the following: a pressure difference sensor, a weight sensor, a photographing device, and a temperature and humidity sensor; The controller is used to execute the method according to any one of claims 1-7.

9. The liquid cooling unit according to claim 8, wherein Further including: An electromagnetic excitation device disposed on the filter screen; The electromagnetic excitation device is used to drive the filter screen to vibrate in response to the instruction of the controller.

10. The liquid cooling unit according to claim 8 or 9, characterized in that, Further including: A guide plate; The guide plate extends downward along the filter screen and folds to the outside of the housing.

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