Work machine, radiator self-cleaning system, and control method

Abstract

The present application relates to the technical field of working machine, and provides a working machine, a radiator self-cleaning system and a control method.The radiator self-cleaning system comprises a first sensor, a cleaning mechanism and a controller; the first sensor is arranged on a to-be-detected area of the radiator to detect the air pressure difference on both sides of the to-be-detected area of the radiator; the cleaning mechanism is arranged towards the to-be-detected area of the radiator; the controller is electrically connected with the first sensor and the cleaning mechanism respectively, and is configured to judge whether the to-be-detected area of the radiator is blocked based on the detected air pressure difference; when the to-be-detected area of the radiator is blocked, the controller controls the cleaning mechanism to clean the to-be-detected area of the radiator.The present application can detect the blocking condition of a certain area of the radiator, and can accurately and automatically clean the blocked area without cleaning the whole radiator, thereby effectively improving the cleaning efficiency and having the characteristics of simple cleaning process and high efficiency.

Description

Technical Field

[0001] This invention relates to the field of work machinery technology, and in particular to a work machinery, a radiator self-cleaning system, and a control method. Background Technology

[0002] With the diversified application and development of construction machinery, the structure of construction machinery is becoming more refined, user-friendly, and convenient for operation and maintenance. In order to ensure the normal operation of construction machinery, radiators are generally configured to cool and dissipate heat from components such as the engine.

[0003] Taking excavators as an example, the working conditions of excavators are generally quite harsh, and the radiator is easily blocked by leaves, dust and other debris, which affects the cooling effect of the radiator, resulting in a decrease in engine power and a shortened engine life.

[0004] Currently, the main method for cleaning radiator fins is to remove the radiator, take off the protective mesh, and then use a high-pressure water gun to perform a thorough manual cleaning of the radiator. After cleaning, it needs to be reassembled. The cleaning process is complex and inefficient. Moreover, the radiator fins are very prone to collapsing under the impact of high-pressure water, which affects the heat dissipation effect. Summary of the Invention

[0005] This invention provides a cleaning machine, a radiator self-cleaning system, and a control method. It can detect the blockage in a certain area of ​​the radiator and accurately and automatically clean the blocked area without cleaning the entire radiator. This can effectively improve cleaning efficiency, reduce the labor intensity of operators, and has the characteristics of simple cleaning process and high efficiency.

[0006] This invention provides a radiator self-cleaning system, comprising:

[0007] The first sensor is used to be placed in the area to be tested of the radiator to detect the air pressure difference between the two sides of the area to be tested of the radiator.

[0008] A cleaning mechanism is provided, positioned toward the area to be inspected on the radiator.

[0009] The controller is electrically connected to the first sensor and the cleaning mechanism respectively. The controller is configured to determine whether the area to be tested of the radiator is blocked based on the detected air pressure difference. When the area to be tested of the radiator is blocked, the controller controls the cleaning mechanism to clean the area to be tested of the radiator.

[0010] The machine provided by this invention can detect the air pressure difference between the two sides of the area to be tested on the radiator using a first sensor; a cleaning mechanism positioned towards the area to be tested can clean that area; and a controller electrically connected to both the first sensor and the cleaning mechanism can determine whether the area to be tested is blocked based on the detected air pressure difference. When a blockage occurs, the controller can control the cleaning mechanism to clean that area. Therefore, this invention can detect blockages in a specific area of ​​the radiator and accurately and automatically clean the blocked area without cleaning the entire radiator, effectively improving cleaning efficiency, reducing the labor intensity of workers, and featuring a simple and efficient cleaning process.

[0011] According to the present invention, a radiator self-cleaning system includes a cleaning mechanism comprising:

[0012] The fan is electrically connected to the controller;

[0013] An air duct, connected to the fan and facing the area to be tested of the radiator;

[0014] An air damper is installed inside the air duct and electrically connected to the controller, used to control the opening and closing of the air duct.

[0015] When the area of ​​the radiator to be inspected is blocked, the fan of the cleaning mechanism and the damper in the air duct can be turned on. The air generated by the fan can be blown precisely at the debris in the area of ​​the radiator to be inspected through the air duct, thereby achieving precise cleaning of the radiator and effectively improving cleaning efficiency. Moreover, the air blowing cleaning method can avoid damage to the radiator fins, thus ensuring the heat dissipation effect.

[0016] According to a radiator self-cleaning system provided by the present invention, the first sensor is a plurality of sensors, which are distributed in a plurality of detection areas of the radiator;

[0017] Furthermore, there are multiple air ducts, each corresponding to a specific area of ​​the radiator to be tested. When a blockage occurs in the area of ​​the radiator to be tested, the fan and the corresponding damper in the air duct are controlled to open.

[0018] When a blockage occurs in a specific area of ​​the radiator to be inspected, only the damper in the corresponding air duct needs to be opened, while the dampers in other air ducts (normally closed) do not need to be activated. This simplifies and optimizes the cleaning control process and ensures that all airflow from the fan is concentrated on the blocked area of ​​the radiator for cleaning, thereby effectively improving the cleaning effect. Therefore, this invention can achieve precise, zoned cleaning of each area of ​​the radiator to be inspected, eliminating the need to clean the entire radiator, and effectively improving cleaning efficiency and effectiveness.

[0019] According to the present invention, a radiator self-cleaning system further includes: a second sensor, the second sensor being electrically connected to the controller, the second sensor being used to detect the coolant temperature of the engine cooled by the radiator, and the controller determining whether the area to be detected in the radiator is severely blocked based on the detected coolant temperature of the engine.

[0020] This invention uses a first sensor to detect whether the area to be tested of the radiator is blocked, and a second sensor to detect whether the area to be tested of the radiator is severely blocked, thereby achieving two-level detection of different degrees of blockage and improving the applicability.

[0021] According to the present invention, a radiator self-cleaning system further includes: a display, which is electrically connected to the controller and is used to display alarm signals corresponding to different blockage conditions, so as to remind operators to perform cleaning operations.

[0022] According to the present invention, a radiator self-cleaning system further includes an alarm, which is electrically connected to the controller and is used to emit alarm sounds corresponding to different alarm signals.

[0023] According to the present invention, a radiator self-cleaning system further includes a cleaning switch, which is electrically connected to the controller and is used to control the opening and closing of the cleaning mechanism.

[0024] This invention allows operators to perform one-button cleaning via a cleaning switch, making it highly efficient and convenient to use.

[0025] The present invention also provides a working machine, including an engine and the above-mentioned radiator self-cleaning system, wherein the engine is connected to the radiator.

[0026] The machine tool of this invention, through the aforementioned radiator self-cleaning system, can accurately and automatically clean the blocked area when a certain area of ​​the radiator to be detected is blocked or severely blocked. There is no need to disassemble or clean the radiator, nor is it necessary to clean the entire radiator. This can greatly simplify the radiator cleaning process, improve cleaning efficiency, and reduce the labor intensity of operators. It has the characteristics of simple cleaning process and high efficiency.

[0027] The present invention also provides a self-cleaning control method for a radiator, comprising:

[0028] Obtain the air pressure difference between the two sides of the area to be tested on the radiator;

[0029] Based on the detected air pressure difference, it is determined whether the area of ​​the radiator to be tested is blocked;

[0030] When the area to be tested of the radiator becomes blocked, the cleaning mechanism cleans the area to be tested of the radiator within a first preset time period.

[0031] The self-cleaning control method for radiators of this invention determines whether a blockage has occurred in the area of ​​the radiator to be cleaned by detecting the air pressure difference across the area to be cleaned. When a blockage occurs, a cleaning mechanism cleans the area. Therefore, this invention can detect blockages in a specific area of ​​the radiator and accurately and automatically clean the blocked area without cleaning the entire radiator, effectively improving cleaning efficiency, reducing the labor intensity of workers, and featuring a simple cleaning process and high efficiency.

[0032] According to the self-cleaning control method for a radiator provided by the present invention, the step of determining whether the area to be detected of the radiator is blocked based on the detected air pressure difference specifically includes:

[0033] The detected air pressure difference is compared with a set air pressure threshold. If the detected air pressure difference is greater than or equal to the set air pressure threshold, it is determined that the area to be tested of the radiator is blocked.

[0034] According to a radiator self-cleaning control method provided by the present invention, the step of determining whether the area to be detected of the radiator is blocked based on the detected air pressure difference further includes:

[0035] When the detected air pressure difference is greater than or equal to the set air pressure threshold for a duration that reaches a second preset duration, a first-level alarm is triggered to remind the operator to perform the corresponding cleaning operation.

[0036] According to the self-cleaning control method for a radiator provided by the present invention, the calibration step of setting the air pressure threshold includes:

[0037] The engine, which controls the cooling of the radiator, runs at a normal operating speed for a third preset duration;

[0038] During the third preset time period, the air pressure difference values ​​on both sides of N detection areas of the radiator are obtained, and then the average value P is obtained by averaging the N air pressure difference values. N P N +C represents the calibrated set air pressure threshold, where C is the error value in Pascals.

[0039] Due to factors such as the pressure difference inherent in the radiator itself and the operating environment, the detected air pressure difference data is easily inaccurate, leading to erroneous operations. Therefore, this invention can effectively improve the accuracy of the detection data by calibrating the set air pressure threshold, thereby avoiding erroneous operations.

[0040] A radiator self-cleaning control method according to the present invention further includes:

[0041] Obtain the coolant temperature of the engine cooled by the radiator;

[0042] Based on the detected coolant temperature of the engine, it is determined whether the area of ​​the radiator to be tested is severely blocked;

[0043] When the area to be tested of the radiator is severely blocked, the cleaning time of the cleaning mechanism reaches a fourth preset time, which is longer than the first preset time.

[0044] This invention detects the engine's coolant temperature to determine if the radiator's inspected area is severely clogged. If severe clog is found, a cleaning mechanism is activated to perform corresponding operations until the clog is cleared. Therefore, this invention achieves two-level detection for different degrees of clog, basically meeting the common operating conditions of machinery and expanding its applicability.

[0045] According to a radiator self-cleaning control method provided by the present invention, the step of determining whether the area to be detected of the radiator is severely blocked based on the detected coolant temperature of the engine specifically includes:

[0046] The detected engine coolant temperature is compared with a set temperature threshold. If the detected engine coolant temperature is greater than or equal to the set temperature threshold, it is determined that the area to be tested in the radiator is severely blocked.

[0047] According to a radiator self-cleaning control method provided by the present invention, the step of determining whether the area to be detected of the radiator is severely blocked based on the detected coolant temperature of the engine further includes:

[0048] If the detected engine coolant temperature is greater than or equal to the set temperature threshold for a duration of five preset durations, a second-level alarm will be triggered to remind the operator to perform the corresponding cleaning operation.

[0049] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in this invention or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of the structure of the radiator self-cleaning system provided by the present invention;

[0052] Figure 2 This is a schematic diagram of the working principle of the radiator self-cleaning system provided by the present invention;

[0053] Figure 3 This is a flowchart illustrating the self-cleaning control method for radiators provided by the present invention.

[0054] Figure 4 This is a schematic diagram of the calibration process for setting the air pressure threshold provided by the present invention.

[0055] Figure label:

[0056] 100: Heat sink; 200: First sensor; 300: Cleaning mechanism;

[0057] 301: Fan; 302: Air duct; 3021: Inclined surface; 303: Damper;

[0058] 400: Controller; 500: Second sensor; 600: Engine; 700: Display;

[0059] 800: Alarm; 900: Cleaning switch. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0061] In the description of the embodiments of the present invention, it should be noted that the terms "upper," "lower," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0062] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0063] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] The following is combined with Figures 1-4 The present invention describes the operating machinery, the radiator self-cleaning system, and the control method thereof.

[0066] According to an embodiment of the first aspect of the present invention, referring to Figure 1As shown, the radiator self-cleaning system provided by the present invention mainly includes: a first sensor 200, a cleaning mechanism 300, and a controller 400. The first sensor 200 is disposed in the detection area of ​​the radiator 100 to detect the air pressure difference between the two sides of the detection area. The cleaning mechanism 300 is disposed towards the detection area of ​​the radiator 100 to clean the detection area. The controller 400 is electrically connected to both the first sensor 200 and the cleaning mechanism 300. The controller 400 is configured to determine whether the detection area of ​​the radiator 100 is blocked based on the air pressure difference detected by the first sensor 200, and when the detection area of ​​the radiator 100 is blocked, the controller 400 can control the cleaning mechanism 300 to clean the detection area of ​​the radiator 100.

[0067] It is understandable that when the radiator 100 is blocked by debris such as leaves and dust, the air pressure on both sides of the radiator 100 will change. Therefore, by detecting the air pressure difference on both sides of the radiator 100, the present invention can determine whether the radiator 100 is blocked.

[0068] The first sensor 200 sends the detected air pressure difference to the controller 400. The controller 400 compares the detected air pressure difference with a set air pressure threshold. When the detected air pressure difference is greater than or equal to the set air pressure threshold, it is determined that the area to be detected in the radiator 100 is blocked.

[0069] Therefore, the working machine provided in this embodiment of the invention can detect the air pressure difference between the two sides of the area to be detected of the radiator 100 through the first sensor 200; the cleaning mechanism 300 is set towards the area to be detected of the radiator 100 to clean the area to be detected; the controller 400 is electrically connected to the first sensor 200 and the cleaning mechanism 300 respectively, and can determine whether the area to be detected of the radiator 100 is blocked based on the detected air pressure difference. When the area to be detected of the radiator 100 is blocked, the controller 400 can control the cleaning mechanism 300 to clean the area to be detected of the radiator 100. Therefore, this invention can detect the blockage of a certain area of ​​the radiator 100 and can accurately and automatically clean the blocked area without cleaning the entire radiator 100, which can effectively improve cleaning efficiency, reduce the labor intensity of operators, and has the characteristics of simple cleaning process and high efficiency.

[0070] According to one embodiment of the present invention, the two detection points of the first sensor 200 are at the same height, which can ensure the accuracy of detection and prevent misoperation.

[0071] The specific type of the first sensor 200 of this invention is not particularly limited, as long as it can detect the air pressure difference.

[0072] For example, the first sensor 200 can be a barometric pressure sensor. In this case, two barometric pressure sensors are respectively set on the front and back sides of the area to be detected in the radiator 100, and are used to detect the barometric pressure on both sides respectively, and send the data to the controller 400 for calculation and processing to obtain the barometric pressure difference value.

[0073] The first sensor 200 can also be a differential pressure sensor. The two detection points of the differential pressure sensor are respectively set on the front and back sides of the area to be detected in the radiator 100. It can directly detect the air pressure difference between the two sides and send the air pressure difference to the controller 400.

[0074] The first sensor 200 can also be a wind speed sensor. In this case, the two wind speed sensors are respectively set on the front and rear sides of the area to be detected of the radiator 100 to detect the wind speed and send it to the controller 400 for calculation and processing. The obtained speed difference can be converted into an air pressure difference by the controller 400. When the detected air pressure difference exceeds the set air pressure threshold, it indicates that the area to be detected of the radiator 100 is blocked.

[0075] According to one embodiment of the present invention, referring to Figure 1 As shown, the cleaning mechanism 300 mainly includes: a fan 301, an air duct 302, and an air damper 303. The fan 301 is electrically connected to the controller 400 and is used to generate airflow. The air duct 302 is connected to the fan 301 and faces the area of ​​the radiator 100 to be inspected, guiding the airflow generated by the fan 301 to the area of ​​the radiator 100 to clean debris from that area. The air damper 303 is located within the air duct 302 and is electrically connected to the controller 400, controlling the opening and closing of the air duct 302 to achieve cleaning operation.

[0076] The cleaning mechanism 300 provided in this embodiment of the invention can open the fan 301 and the damper 303 in the air duct 302 when the area to be tested of the radiator 100 is blocked. The air generated by the fan 301 can be accurately blown to the debris in the area to be tested of the radiator 100 through the air duct 302, thereby achieving precise cleaning of the radiator 100, effectively improving the cleaning efficiency. Moreover, the air blowing cleaning method can avoid damage to the fins of the radiator 100, thereby ensuring the heat dissipation effect.

[0077] According to one embodiment of the present invention, there are multiple first sensors 200, which are distributed in multiple detection areas of the radiator 100 to achieve comprehensive detection of different positions of the radiator 100, thereby ensuring that the radiator 100 is not blocked; correspondingly, there are multiple air ducts 302, each air duct 302 corresponding one-to-one with each detection area of ​​the radiator 100, that is, each air duct 302 faces each detection area of ​​the radiator 100; when one or more detection areas of the radiator 100 are blocked, the fan 301 and the damper 303 in the corresponding air duct 302 are opened to achieve precise cleaning.

[0078] Understandably, when a certain area of ​​the radiator 100 to be inspected becomes blocked, only the damper 303 in the corresponding air duct 302 needs to be opened, while the dampers 303 in other air ducts 302 (normally closed) do not need to be activated. This simplifies and optimizes the cleaning control process, and also ensures that the airflow from the fan 301 is concentrated on the blocked area of ​​the radiator 100 for cleaning, effectively improving the cleaning effect. Therefore, this invention can achieve precise cleaning of each area of ​​the radiator 100 to be inspected, without needing to clean other unblocked areas of the radiator 100, thus effectively improving cleaning efficiency.

[0079] According to one embodiment of the present invention, referring to Figure 1 As shown, the radiator 100 of the present invention is provided with a first sensor 200 and a corresponding air duct 302 at its upper and lower ends respectively; the air inlets of the air ducts 302 at both ends are connected to the fan 301, and the air outlets of the air ducts 302 at both ends face the detection areas at both ends of the radiator 100 respectively. The air outlets of the air ducts 302 at both ends have inclined surfaces 3021 respectively. The inclined surfaces 3021 of the air ducts 302 at both ends are arranged opposite to each other. The inclined surface 3021 of the upper air duct 302 can make the air outlet blow downward, and the inclined surface 3021 of the lower air duct 302 can make the air outlet blow upward. When at least one of the detection areas at both ends of the radiator 100 is blocked, the air outlet of the corresponding air duct 302 can spread to the entire radiator 100, which can effectively improve the cleaning effect.

[0080] The specific type of the fan 301 in this invention is not particularly limited. For example, the fan 301 can be independently external; or the fan 301 can be an air conditioning fan in the cab of the operating machinery; or the fan 301 can be a fan of the engine 600 of the operating machinery. The strong airflow provided by the air conditioning fan and the engine 600 fan can clean the radiator 100 through the air duct 302.

[0081] It is worth mentioning that when the fan 301 is used as the air conditioning fan and engine 600 fan of the operating machinery, centralized maintenance and control can be achieved, and the system structure can be simplified and costs reduced.

[0082] According to one embodiment of the present invention, the damper 303 is an electric damper, specifically a servo motor damper, to facilitate automatic control. Furthermore, the opening degree of the damper 303 is adjustable to regulate the cleaning airflow according to different blockage conditions, achieving precise cleaning. For example, when a minor blockage occurs, the damper 303 can be partially open; when a severe blockage occurs, the damper 303 can be fully open.

[0083] It is worth mentioning that when some areas of the radiator 100 to be tested are slightly blocked and some areas to be tested are severely blocked, the total air volume generated by the fan 301 is distributed by adjusting the opening of the damper 303 in the corresponding air duct 302. The large air volume is delivered to the severely blocked area, while the small air volume is delivered to the slightly blocked area, thus achieving a precise match between air volume and blockage, and improving the cleaning effect.

[0084] According to one embodiment of the present invention, referring to Figure 1 As shown, the radiator self-cleaning system also includes a second sensor 500, which is electrically connected to the controller 400. The second sensor 500 is used to detect the coolant temperature of the radiator 100 cooling the engine 600. The controller 400 can determine whether the area to be detected in the radiator 100 is severely blocked based on the detected coolant temperature of the engine 600.

[0085] It should be noted that when the pressure difference detected by the first sensor 200 exceeds the set pressure threshold, indicating that the radiator 100 is blocked, the coolant temperature of the engine 600 generally will not change significantly in a short period of time and will remain within the set temperature threshold range, indicating a minor blockage. When the coolant temperature of the engine 600 changes significantly, such as exceeding the set temperature threshold, it indicates that the radiator 100 is severely blocked. In this case, the second sensor 500 can detect the situation and perform a corresponding precise cleaning operation.

[0086] It is understood that the present invention can detect whether the area to be tested of the radiator 100 is blocked, i.e., slightly blocked, through the first sensor 200; and can detect whether the area to be tested of the radiator 100 is severely blocked through the second sensor 500, thereby realizing two-level detection of different degrees of blockage, thus achieving precise cleaning and improving the scope of application, which can basically meet the common working conditions of the machinery.

[0087] According to one embodiment of the present invention, the second sensor 500 can be an independent external temperature sensor; the second sensor 500 can also be a coolant temperature sensor integrated into the engine 600, which facilitates centralized management, simplifies the system structure, and reduces costs.

[0088] According to one embodiment of the present invention, referring to Figure 1As shown, the radiator self-cleaning system also includes a display 700, which is electrically connected to the controller 400 and is used to display alarm signals corresponding to different blockage conditions, so as to remind operators to perform cleaning operations.

[0089] For example, when the first sensor 200 detects that the air pressure difference in a certain area of ​​the radiator 100 exceeds a set air pressure threshold, the controller 400 determines that the area of ​​the radiator 100 is blocked and sends a command to the display 700, where a yellow warning icon remains lit. When the second sensor 500 detects that the coolant temperature of the engine 600 exceeds a set temperature threshold, the controller 400 determines that the area of ​​the radiator 100 is severely blocked and sends a fault command to the display 700, where a red warning icon flashes at a certain frequency. After observing the corresponding alarm signal, the operator proceeds with the cleaning operation.

[0090] According to one embodiment of the present invention, both the display 700 and the controller 400 can be the display and controller that come with the working machine, which facilitates centralized management and control, simplifies the system structure, and reduces costs.

[0091] According to one embodiment of the present invention, the radiator self-cleaning system further includes an alarm 800, which is electrically connected to the controller 400 and is used to emit alarm sounds corresponding to different alarm signals.

[0092] To prevent workers from missing the alarm signal displayed on the monitor 700, this embodiment of the invention uses an alarm sound emitted by the alarm device 800 to ensure that workers notice the blockage in time and perform cleaning operations, thereby ensuring work safety.

[0093] According to one embodiment of the present invention, referring to Figure 1 As shown, the radiator self-cleaning system also includes a cleaning switch 900, which is electrically connected to the controller 400 and is used to control the opening and closing of the cleaning mechanism 300.

[0094] In this embodiment of the invention, the cleaning switch 900 allows operators to perform one-button cleaning, making it highly efficient and convenient to use.

[0095] The working principle of the radiator self-cleaning system of the present invention is described below with reference to a specific example. Figure 2 As shown, it generally includes: a blockage alarm and a self-cleaning process.

[0096] (1) Blockage alarm: Divide the radiator 100 into N detection areas and install a differential pressure sensor in each detection area to detect the air pressure difference before and after each detection area of ​​the radiator 100 and transmit the air pressure difference to the controller 400. The controller 400 compares the received air pressure difference with the set air pressure threshold and reads the detected temperature of the coolant temperature sensor built into the engine 600. The controller 400 performs a comprehensive analysis and judgment on the detected radiator air pressure difference and the engine 600 coolant temperature. Specifically: when the coolant temperature of the engine 600 is lower than the set temperature threshold and the air pressure difference of the radiator 100 exceeds the set air pressure threshold for a certain period of time, the controller 400 sends a command to the display 700, and the yellow warning icon on the display 700 lights up, triggering a minor blockage alarm, i.e., the first-level alarm; when the coolant temperature of the engine 600 exceeds the set temperature threshold for a certain period of time, the controller 400 sends a fault command to the display 700, and at the same time, the red warning icon on the display 700 lights up and flashes at a certain frequency, triggering a severe blockage alarm, i.e., the second-level alarm.

[0097] (2) Self-cleaning: The user can press the cleaning switch 900 according to the actual blockage condition. The controller 400, based on the received instructions and the data fed back by the sensors, starts the fan 301 of the cleaning mechanism 300, automatically identifies and opens the damper 303 in the air duct 302 corresponding to the area to be detected, and performs cleaning. During the cleaning process, when the coolant temperature of the engine 600 drops below the set temperature threshold and returns to normal temperature, the red warning icon on the display 700 disappears. When the air pressure difference of the radiator 100 drops below the set air pressure threshold and returns to normal pressure difference, the yellow warning icon on the display 700 disappears, the controller 400 controls the fan 301 to stop operating, and the damper 303 closes.

[0098] Furthermore, when a Level 1 alarm occurs, the system can prompt the operator to clean the equipment themselves via the display 700 and the alarm 800. If the operator fails to complete the cleaning action for some reason and a Level 2 alarm is triggered, the system can forcibly start the self-cleaning process to prevent damage to equipment such as the radiator 100 and the engine 600, and ensure the normal operation of the equipment.

[0099] According to an embodiment of the second aspect of the present invention, the present invention also provides a working machine, which mainly includes an engine 600 and a radiator self-cleaning system as described in the above embodiment, wherein the engine 600 is connected to the radiator 100.

[0100] Understandably, the engine 600, radiator 100, and radiator self-cleaning system are all mounted on the body of the work machinery.

[0101] Moreover, there is no special limitation on the specific type of the working machine of the present invention. For example, it can be an excavator, a crane, a concrete pump truck, etc.

[0102] By means of the radiator self-cleaning system of the above embodiment, the working machine of the embodiment of the present invention can greatly simplify the cleaning process, improve the cleaning efficiency, reduce the labor intensity of the operators, and has the characteristics of simple cleaning process and high efficiency.

[0103] According to an embodiment of the third aspect of the present invention, the present invention further provides a radiator self-cleaning control method. The radiator self-cleaning control method described below can be mutually referred to the radiator self-cleaning system described above.

[0104] Refer to Figure 3 As shown, the radiator self-cleaning control method of the present invention includes:

[0105] S100. Obtain the air pressure difference between both sides of the area to be detected of the radiator 100.

[0106] Specifically, the first sensor 200 is arranged in the area to be detected of the radiator 100, and the air pressure difference between both sides of the area to be detected of the radiator 100 is detected by the first sensor 200.

[0107] S200. Judge whether the area to be detected of the radiator 100 is blocked based on the detected air pressure difference.

[0108] Specifically, the air pressure difference detected by the first sensor 200 is transmitted to the controller 400. The controller 400 compares the detected air pressure difference with the set air pressure threshold value. When the detected air pressure difference is greater than or equal to the set air pressure threshold value, it is judged that the area to be detected of the radiator 100 is blocked.

[0109] Moreover, when the duration for which the detected air pressure difference is greater than or equal to the set air pressure threshold value reaches the second preset duration, a first-level alarm is given to remind the operator to perform corresponding cleaning operations.

[0110] During the detection process, it is prone to be affected by complex working condition environmental factors, resulting in detection errors and false alarms. Therefore, in the present invention, the duration for which the detected air pressure difference is greater than or equal to the set air pressure threshold value is compared with the second preset duration. When the detected air pressure difference continuously remains greater than or equal to the set air pressure threshold value within a certain period of time, it can be determined that a blockage phenomenon has occurred. Therefore, the present invention can effectively improve the control accuracy and prevent false alarms.

[0111] Furthermore, due to factors such as the pressure difference inherent in the radiator 100 itself and the operating environment, the detected air pressure difference data is prone to inaccuracy, leading to erroneous operations. Therefore, this invention, by calibrating the set air pressure threshold, can effectively improve the accuracy of the detection data, thereby avoiding erroneous operations. Before calibration, ensure that the engine 600 is properly adjusted, check that the radiator 100 is normal and free from blockages or folded fins, ensure that all other components are normal, and that there are no abnormal obstructions in front of the radiator 100.

[0112] Reference Figure 4 As shown, the calibration steps for setting the air pressure threshold in this invention mainly include:

[0113] S201, The engine 600, which is cooled by the radiator 100, runs at a normal operating speed for a third preset duration.

[0114] The commonly used speed and the third preset duration can be designed according to the specific working conditions. For example, the commonly used speed can be 1500-1600 rpm, and the third preset duration can be 5-10 minutes.

[0115] S202. During the third preset time period, obtain the air pressure difference values ​​on both sides of N areas to be detected of the radiator, and then average the N air pressure difference values ​​to obtain the average value P. N P N +C represents the calibrated set air pressure threshold, where C is the error value in Pascals.

[0116] S300: When the area to be tested of the radiator 100 becomes blocked, the cleaning mechanism 300 cleans the area to be tested of the radiator 100 within a first preset time period. The cleaning mechanism 300 is as described above.

[0117] The radiator self-cleaning control method of this invention determines whether the area of ​​the radiator 100 to be checked is blocked by detecting the air pressure difference between the two sides of the area to be checked. When blockage occurs, the cleaning mechanism 300 can clean the area of ​​the radiator 100 to be checked. Therefore, this invention can detect the blockage in a certain area of ​​the radiator 100 and can accurately and automatically clean the blocked area without cleaning the entire radiator, which can effectively improve cleaning efficiency, reduce the labor intensity of operators, and has the characteristics of simple cleaning process and high efficiency.

[0118] Please continue to refer to Figure 3 As shown, the self-cleaning control method for radiators of the present invention further includes:

[0119] S400: Obtain the coolant temperature of the radiator 100 cooling the engine 600.

[0120] Specifically, the second sensor 500 detects the coolant temperature of the radiator 100 cooling the engine 600.

[0121] S500 determines whether the area to be tested in the radiator 100 is severely blocked based on the detected coolant temperature of the engine 600.

[0122] Specifically, the second sensor 500 transmits the detected coolant temperature of the engine 600 to the controller 400. The controller 400 compares the detected coolant temperature of the engine 600 with a set temperature threshold. If the detected coolant temperature is greater than or equal to the set temperature threshold, it is determined that the area to be detected in the radiator 100 is severely blocked. It is understood that the set temperature threshold for the coolant in the engine 600 of this invention is set to a fixed value before the engine leaves the factory.

[0123] Furthermore, if the detected coolant temperature of engine 600 is greater than or equal to the set temperature threshold for a duration of five preset durations, a second-level alarm will be triggered to remind the operator to perform the corresponding cleaning operation.

[0124] Because the detection process is easily affected by complex operating conditions and environmental factors, errors may occur, leading to false alarms. Therefore, this invention compares the duration for which the detected coolant temperature of the engine 600 is greater than or equal to a set temperature threshold with a fifth preset time period. When the detected coolant temperature remains greater than or equal to the set temperature threshold for a certain period, a severe blockage can be identified. Therefore, this invention can effectively improve control accuracy and prevent false alarms.

[0125] S600 When the area to be detected of the radiator 100 is severely blocked, the cleaning time of the cleaning mechanism 300 reaches the fourth preset time, which is longer than the first preset time.

[0126] Specifically, when a severe blockage occurs, the cleaning time should be longer than when a minor blockage occurs, until both alarm levels are cleared, thus achieving thorough cleaning.

[0127] This invention, by detecting the coolant temperature of the engine 600, can determine whether a severe blockage has occurred in the area of ​​the radiator 100 to be tested. If a severe blockage is found, the cleaning mechanism 300 is controlled to perform corresponding operations until the blockage is eliminated. Therefore, this invention achieves two-level detection of different degrees of blockage, basically meeting the common operating conditions of machinery and improving its applicability.

[0128] In summary, this invention provides an alarm and self-cleaning system for radiator blockage in machinery, which realizes automatic alarm for radiator blockage and allows operators to perform one-button automatic cleaning based on the alarm signal. It features simple operation, good cleaning effect, and high cleaning efficiency.

[0129] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A radiator self-cleaning system, characterized in that, include: The first sensor is used to be placed in the area to be tested of the radiator to detect the air pressure difference between the two sides of the area to be tested of the radiator. A cleaning mechanism is provided, positioned toward the area to be inspected on the radiator. The controller is electrically connected to the first sensor and the cleaning mechanism respectively. The controller is configured to determine whether the area to be tested of the radiator is blocked based on the detected air pressure difference. When the area to be tested of the radiator is blocked, the controller controls the cleaning mechanism to clean the area to be tested of the radiator. The cleaning mechanism includes: The fan is electrically connected to the controller; An air duct, connected to the fan and facing the area to be tested of the radiator; An air damper, installed inside the air duct and electrically connected to the controller, is used to control the opening and closing of the air duct; The first sensor is multiple and is distributed in multiple detection areas of the radiator; the air duct is multiple and each air duct corresponds one-to-one with each detection area of ​​the radiator. When the detection area of ​​the radiator is blocked, the fan and the corresponding damper in the air duct are controlled to open.

2. The radiator self-cleaning system according to claim 1, characterized in that, Also includes: The second sensor is electrically connected to the controller and is used to detect the coolant temperature of the engine cooled by the radiator. The controller determines whether the area to be tested in the radiator is severely blocked based on the detected coolant temperature of the engine.

3. The radiator self-cleaning system according to claim 2, characterized in that, Also includes: The display, which is electrically connected to the controller, is used to display alarm signals corresponding to different blockage conditions.

4. The radiator self-cleaning system according to claim 3, characterized in that, Also includes: An alarm device, which is electrically connected to the controller, is used to emit alarm sounds corresponding to different alarm signals.

5. The radiator self-cleaning system according to claim 3, characterized in that, Also includes: A cleaning switch, which is electrically connected to the controller, is used to control the opening and closing of the cleaning mechanism.

6. A type of operating machinery, characterized in that, It includes an engine and a radiator self-cleaning system according to any one of claims 1-5, wherein the engine is connected to the radiator.

7. A self-cleaning control method for a radiator, characterized in that, include: Obtain the air pressure difference between the two sides of the area to be tested on the radiator; Based on the detected air pressure difference, it is determined whether the area of ​​the radiator to be tested is blocked; When the area to be tested of the radiator becomes blocked, the cleaning mechanism cleans the area to be tested of the radiator within a first preset time period; The cleaning mechanism includes: The fan is electrically connected to the controller; An air duct, connected to the fan and facing the area to be tested of the radiator; An air damper, installed inside the air duct and electrically connected to the controller, is used to control the opening and closing of the air duct; The first sensor is a plurality of sensors, which are distributed in a plurality of detection areas of the radiator; the air duct is a plurality of air ducts, each of which corresponds one-to-one with each detection area of ​​the radiator. When a detection area of ​​the radiator is blocked, the fan and the damper in the corresponding air duct are controlled to open.

8. The radiator self-cleaning control method according to claim 7, characterized in that, The step of determining whether the area to be tested of the radiator is blocked based on the detected air pressure difference specifically includes: The detected air pressure difference is compared with a set air pressure threshold. If the detected air pressure difference is greater than or equal to the set air pressure threshold, it is determined that the area to be tested of the radiator is blocked.

9. The radiator self-cleaning control method according to claim 8, characterized in that, The step of determining whether the area to be tested of the radiator is blocked based on the detected air pressure difference value further includes: When the detected pressure difference is greater than or equal to the set pressure threshold for a duration that reaches a second preset duration, a first-level alarm is triggered.

10. The radiator self-cleaning control method according to claim 8, characterized in that, The calibration steps for setting the air pressure threshold include: The engine, which controls the cooling of the radiator, runs at a normal operating speed for a third preset duration; During the third preset time period, the air pressure difference values ​​on both sides of N detection areas of the radiator are obtained, and then the average value P is obtained by averaging the N air pressure difference values. N P N +C represents the calibrated set air pressure threshold, where C is the error value in Pascals.

11. The radiator self-cleaning control method according to any one of claims 7-10, characterized in that, Also includes: Obtain the coolant temperature of the engine cooled by the radiator; Based on the detected coolant temperature of the engine, it is determined whether the area of ​​the radiator to be tested is severely blocked; When the area to be tested of the radiator is severely blocked, the cleaning time of the cleaning mechanism reaches a fourth preset time, which is longer than the first preset time.

12. The radiator self-cleaning control method according to claim 11, characterized in that, The step of determining whether the area to be tested of the radiator is severely blocked based on the detected coolant temperature of the engine specifically includes: The detected engine coolant temperature is compared with a set temperature threshold. If the detected engine coolant temperature is greater than or equal to the set temperature threshold, it is determined that the area to be tested in the radiator is severely blocked.

13. The radiator self-cleaning control method according to claim 12, characterized in that, The step of determining whether the area to be tested of the radiator is severely blocked based on the detected coolant temperature of the engine further includes: If the detected engine coolant temperature is greater than or equal to the set temperature threshold for a duration of a fifth preset duration, a second-level alarm will be triggered.

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