Dish-washing machine drainage detection method and device, dish-washing machine and medium

Abstract

The embodiment of the invention provides a drainage detection method and device of a dish-washing machine, the dish-washing machine and a medium, and the method comprises the steps that after the dish-washing machine starts a drainage function, the rotation condition of an impeller is detected in real time, and whether a drainage pipe is blocked or not is judged according to the rotation condition of the impeller. If it is detected that the drainage pipe is blocked, the drainage pipe is automatically cleaned. The dish-washing machine drainage detection process is simplified, the device is simple in arrangement and low in detection cost, the drainage condition of the dish-washing machine is detected in time, smooth operation of the drainage function of the dish-washing machine is ensured, and user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwasher drainage detection, and in particular to a dishwasher drainage detection method, a dishwasher, and a computer-readable storage medium. Background Art

[0002] With the improvement of living standards and the rapid development of technology, dishwashers have gradually come into people's view. Using dishwashers to wash dishes after meals can solve the problem that most users do not want to wash dishes and replace manual labor. If the drainage pump of the dishwasher fails or the drainage pipe is blocked during the drainage process, if it cannot be detected and determined in time, the washing water in the dishwasher will overflow from the dishwasher, causing the user's home floor to be soaked. The existing dishwasher drainage detection process is complicated, the device is set up more, the detection cost is high, the detection results are not timely, and it cannot meet user needs. Summary of the invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide a method and device for detecting drainage of a dishwasher, a dishwasher, and a computer-readable storage medium that overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above problems, an embodiment of the present invention discloses a drainage detection method for a dishwasher, comprising:

[0005] After the dishwasher starts the drainage function, detecting the rotation of the impeller;

[0006] Determining whether the drain pipe is blocked according to the rotation of the impeller;

[0007] If the drain pipe is clogged, clean the drain pipe.

[0008] Optionally, the dishwasher further comprises a sensor, and a detection object is provided on the impeller, and the detecting of the rotation of the impeller comprises:

[0009] Acquire a pulse signal detected by the sensor; the pulse signal is detected by the sensor when the detection object on the impeller rotates to a position corresponding to the sensor;

[0010] The rotation condition of the impeller is determined according to the pulse signal.

[0011] Optionally, the method comprises:

[0012] determining a pulse time of the pulse signal;

[0013] The rotation condition of the impeller is determined according to the pulse time of the pulse signal.

[0014] Optionally, determining the rotation condition of the impeller according to the pulse time of the pulse signal includes:

[0015] If the pulse time of the pulse signal is greater than a preset time threshold, it is determined that the impeller rotates abnormally.

[0016] Optionally, the dishwasher further comprises a drainage pump arranged in the drainage pipe, and determining whether the drainage pipe is blocked according to the rotation of the impeller comprises:

[0017] If the rotation condition of the impeller is abnormal, the drainage pump is controlled to rotate in reverse to form a negative pressure in the dishwasher.

[0018] Optionally, determining the rotation condition of the impeller according to the pulse time of the pulse signal includes:

[0019] If the pulse time of the pulse signal is zero, it is determined that the impeller stops rotating.

[0020] Optionally, determining whether the drain pipe is blocked according to the rotation of the impeller includes:

[0021] If the rotation condition of the impeller is that the impeller stops rotating, a reminder message is output, where the reminder message is used to remind the user to clean the dishwasher.

[0022] Correspondingly, an embodiment of the present invention further discloses a drainage detection device for a dishwasher, comprising:

[0023] A rotation detection module, used to detect the rotation of the impeller after the dishwasher starts the drainage function;

[0024] A blockage determination module, used to determine whether the drain pipe is blocked according to the rotation of the impeller;

[0025] The drain pipe cleaning module is used to clean the drain pipe if the drain pipe is blocked.

[0026] Optionally, the dishwasher further comprises a sensor, a detection object is provided on the impeller, and the rotation detection module comprises:

[0027] A pulse signal acquisition submodule, used to acquire the pulse signal detected by the sensor; the pulse signal is detected by the sensor when the detection object on the impeller rotates to a position corresponding to the sensor;

[0028] The rotation condition acquisition submodule is used to determine the rotation condition of the impeller according to the pulse signal.

[0029] Optionally, the device comprises:

[0030] A pulse time determination module, used to determine the pulse time of the pulse signal;

[0031] The rotation condition determination submodule is used to determine the rotation condition of the impeller according to the pulse time of the pulse signal.

[0032] Optionally, the rotation condition determination submodule includes:

[0033] The rotation abnormality determination unit determines that the impeller rotates abnormally if the pulse time of the pulse signal is greater than a preset time threshold.

[0034] Optionally, the dishwasher further comprises a drainage pump arranged in the drainage pipe, and the blockage determination module comprises:

[0035] The drainage pump control submodule is used for controlling the drainage pump to rotate in reverse if the rotation condition of the impeller is abnormal, so as to form a negative pressure in the dishwasher.

[0036] Optionally, the rotation condition determination submodule includes:

[0037] The impeller stop determination unit is used to determine that the impeller stops rotating if the pulse time of the pulse signal is zero.

[0038] Optionally, the congestion determination module includes:

[0039] The information reminder submodule is used to output a reminder message if the rotation condition of the impeller is that the impeller stops rotating, and the reminder message is used to remind the user to clean the dishwasher.

[0040] Accordingly, an embodiment of the present invention discloses a dishwasher, comprising: a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program implements the various steps of the above-mentioned dishwasher drainage detection method embodiment when executed by the processor.

[0041] Accordingly, an embodiment of the present invention discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, each step of the above-mentioned embodiment of the drainage detection method for the dishwasher is implemented.

[0042] The embodiments of the present invention include the following advantages:

[0043] In the embodiment of the present invention, after the dishwasher turns on the drainage function, the rotation of the impeller is detected in real time; then, according to the rotation of the impeller, it is determined whether the drain pipe is blocked; finally, if the drain pipe is detected to be blocked, the drain pipe is automatically cleaned. The embodiment of the present invention simplifies the process of dishwasher drainage detection, the device is simple to set up, the detection cost is low, and the drainage condition of the dishwasher is detected in time, which ensures the smooth operation of the dishwasher drainage function and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a flow chart of steps of a drainage detection method for a dishwasher provided by an embodiment of the present invention;

[0045] Figure 2 is a flowchart of the steps of another method for detecting drainage of a dishwasher provided by an embodiment of the present invention;

[0046] Figure 3 is a diagram of components of a dishwasher system for implementing a method for detecting drainage of a dishwasher provided by an embodiment of the present invention;

[0047] Figure 4 is a specific component diagram of a drainage detection device for a dishwasher provided by an embodiment of the present invention;

[0048] Figure 5 is a pulse time schematic diagram of a drainage detection device for a dishwasher provided by an embodiment of the present invention;

[0049] Figure 6 is a flowchart of specific steps of a drainage detection method for a dishwasher provided by an embodiment of the present invention;

[0050] Figure 7 It is a structural block diagram of a drainage detection device for a dishwasher provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0051] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0052] With the advancement of technology and the improvement of living standards, dishwashers have gradually become one of the indispensable household appliances in modern families. The popularity of dishwashers not only solves the trouble of users washing dishes after meals, but also improves life efficiency through automated operation.

[0053] However, during the drainage process of the dishwasher, problems such as drain pump failure or drain pipe blockage often occur. If not detected and handled in time, it may cause the washing water to overflow, thereby causing damage to the user's home environment.

[0054] There are two common methods for detecting dishwasher drainage failures. The first method is to set a pressure detection device in the dishwasher to detect the water pressure in the dishwasher water tank to obtain the washing water level in the dishwasher, and to determine whether the water level in the tank drops after the dishwasher performs the drainage action by detecting the change in the washing water level, so as to determine whether the dishwasher has a drainage failure. The second method is to set a float switch in the dishwasher, and use the buoyancy principle to detect the height change of the float device on the washing water surface to obtain the washing water level in the dishwasher, and then determine whether the dishwasher has a drainage failure.

[0055] However, the above detection methods have the following problems: In the first method, since the installation of the pressure detection device requires wiring, an air cavity needs to be set in the inner tank of the dishwasher, and a pressure switch or pressure sensor needs to be added, and the computer board also needs to be provided with relevant detection interfaces, this method is costly, and the inner tank needs to be separately opened, which increases the risk of water leakage. In the second method, since a floating switch needs to be installed inside the dishwasher, the dishwasher adds a detection device and corresponding components, and the inner tank of the dishwasher needs to add space for placing components such as a float device at the sink and other parts, which increases water consumption and energy consumption, reduces the space in the inner tank, and compresses the washing capacity of the dishwasher. Therefore, in the prior art, the drainage detection process of the dishwasher is complicated, the device setting is cumbersome, the detection cost is high, and the result feedback is not timely, which makes it difficult to meet the user's demand for efficiency and convenience.

[0056] One of the core concepts of the embodiment of the present invention is to detect the rotation of the impeller in the drain pipe in real time after the dishwasher turns on the drain function, and determine whether the drain pipe is blocked based on the rotation of the impeller. If the drain pipe is detected to be blocked, the cleaning operation is automatically performed, thereby avoiding the risk of overflow of washing water and damage to the user's home environment. The embodiment of the present invention simplifies the process of dishwasher drainage detection, reduces the cost of device setting and detection, and at the same time realizes rapid detection and automatic processing of drain pipe blockage, improves the intelligence level and user experience of the dishwasher, and provides users with a safer and more convenient use environment.

[0057] Reference Figure 1 , shows a flow chart of a method for detecting drainage of a dishwasher provided by an embodiment of the present invention, and the method may specifically include the following steps:

[0058] Step 101, after the dishwasher starts the drainage function, detecting the rotation of the impeller;

[0059] The method of the embodiment of the present invention can be applied to various types of dishwashers, such as household dishwashers, commercial dishwashers, built-in dishwashers, etc. After the drainage function is turned on, the dishwasher monitors the rotation of the impeller in real time through built-in sensors or cameras and other devices. The rotation of the impeller can reflect the operating status of the drainage system, including the rotation speed, stability, and whether there is abnormal vibration.

[0060] In some examples, the rotation of the impeller can also be detected by using technical means such as photoelectric sensors, Hall sensors, and magnetic sensors. These sensors can accurately capture the rotation frequency and rotation direction of the impeller and abnormal signals during the rotation process.

[0061] Specifically, the photoelectric sensor can monitor the rotation state of the impeller in real time by emitting an infrared beam and detecting changes in the reflected light. When the impeller rotates, the photoelectric sensor can capture the periodic interruption of the light beam and calculate the rotation frequency and direction of the impeller. If the impeller rotates abnormally, such as a sudden drop or stop in speed, the photoelectric sensor can quickly capture this change and generate a corresponding abnormal signal.

[0062] The Hall sensor uses the Hall effect to determine the rotation of the impeller by detecting changes in the magnetic field. When the impeller rotates, the magnetic material attached to the impeller passes through the Hall sensor, causing the magnetic field to change, and the sensor outputs an electrical signal accordingly. The Hall sensor can not only accurately measure the rotation frequency and direction of the impeller, but also detect minor anomalies during the impeller's rotation, such as irregular vibrations or jamming.

[0063] The magnetic sensor determines the rotation of the impeller by detecting the magnetic mark or magnetic field changes on the impeller. This sensor can be installed in the drainage system of the dishwasher to monitor the rotation status of the impeller in real time. When the impeller rotates, the magnetic sensor can capture the periodic changes in the magnetic field and calculate the rotation frequency and direction of the impeller. If the impeller rotates abnormally, such as unstable speed or obstructed rotation, the magnetic sensor can quickly capture this change and generate a corresponding abnormal signal.

[0064] These sensors can not only accurately capture the impeller's rotation frequency, rotation direction, and abnormal signals during rotation, but can also be combined with other sensors or control systems to form a multi-dimensional monitoring system. For example, photoelectric sensors, Hall sensors, and magnetic sensors can work simultaneously and complement each other to improve the monitoring accuracy of the impeller's rotation. In addition, these sensors can also be combined with the dishwasher's intelligent control system to conduct a more in-depth analysis and judgment of the impeller's rotation through big data analysis and artificial intelligence technology.

[0065] In some examples, the detection of the impeller's rotation condition can also be combined with external factors such as the dishwasher's operating history data, current drainage volume, drainage pressure, etc., and a comprehensive judgment on the impeller's rotation condition can be made through big data analysis and artificial intelligence technology.

[0066] In some examples, the dishwasher can detect the rotation of the impeller and, in combination with the physical properties of the drain pipe, such as material, length, and curvature, use intelligent analysis technology to comprehensively evaluate the operating status of the drainage system.

[0067] By detecting the rotation of the impeller in a variety of ways, the system can accurately identify the operating status of the drainage system, thereby providing reliable data support for subsequent drainage pipe blockage judgment. This multi-channel information detection method not only improves the intelligence level of the dishwasher, but also lays the foundation for the stable operation of the drainage system.

[0068] Step 102, determining whether the drain pipe is blocked according to the rotation of the impeller;

[0069] In the embodiment of the present invention, it is possible to determine whether the drain pipe is blocked based on the rotation of the impeller and the design of the drainage system of the dishwasher. The rotation of the impeller can reflect the state of water flow in the drain pipe. For example, slowing down the rotation speed, unstable rotation, or even stopping the rotation may be a signal of drain pipe blockage.

[0070] In some examples, flow sensors, pressure sensors and other devices can be used to determine whether the drain pipe is blocked, and monitor the water flow speed and pressure changes in the drain pipe in real time. These sensors can be combined with the data of the impeller rotation to conduct a comprehensive analysis to improve the accuracy of the blockage judgment.

[0071] In some examples, determining whether a drain pipe is clogged can also be combined with external factors such as the dishwasher's historical drainage records, the current degree of dirtiness of the dishes, and drainage time. Through big data analysis and artificial intelligence technology, an intelligent judgment can be made on the blockage of the drain pipe.

[0072] In some examples, the dishwasher can determine whether the drain pipe is clogged while combining the drain pipe's physical properties such as material, length, and curvature to comprehensively assess the risk of clogging in the drainage system using intelligent analysis technology.

[0073] By determining whether the drain pipe is blocked in a variety of ways, the system can accurately identify the operating status of the drainage system, thereby providing reliable data support for subsequent drain pipe cleaning. This multi-channel information judgment method not only improves the intelligence level of the dishwasher, but also lays the foundation for the stable operation of the drainage system.

[0074] Step 103: If the drain pipe is blocked, clean the drain pipe.

[0075] The method of the embodiment of the present invention can determine whether the drain pipe is blocked according to the rotation of the impeller and the design of the drainage system of the dishwasher. The rotation of the impeller can reflect the state of water flow in the drain pipe. For example, slowing down the rotation speed, unstable rotation, or even stopping the rotation may be a signal of drain pipe blockage.

[0076] In some examples, flow sensors, pressure sensors and other devices can be used to determine whether the drain pipe is blocked, and monitor the water flow speed and pressure changes in the drain pipe in real time. These sensors can be combined with the data of the impeller rotation to conduct a comprehensive analysis to improve the accuracy of the blockage judgment.

[0077] By determining whether the drain pipe is blocked in a variety of ways, the system can accurately identify the operating status of the drainage system, thereby providing reliable data support for subsequent drain pipe cleaning. This multi-channel information judgment method not only improves the intelligence level of the dishwasher, but also lays the foundation for the stable operation of the drainage system.

[0078] In an embodiment of the present invention, first, after the dishwasher turns on the drainage function, the rotation of the impeller is detected in real time; then, based on the rotation of the impeller, it is determined whether the drain pipe is blocked; finally, if blockage is detected in the drain pipe, the drain pipe is automatically cleaned.

[0079] Compared with the prior art, the embodiment of the present invention determines whether the drain pipe is blocked by detecting the rotation of the impeller in real time, without the need to set up a complex pressure detection device or float switch in the dishwasher. The rotation of the impeller can directly reflect the patency of the drain pipe, and the detection logic is simple and clear. In the prior art, it is necessary to set up a pressure detection device, wiring, air cavity, pressure switch or sensor, and a detection interface of the computer board, and the entire system is complex and cumbersome to install. Alternatively, it is necessary to install a float switch and a float device, which also increases the complexity of the system.

[0080] At the same time, the embodiment of the present invention only relies on the rotation of the impeller for detection, and does not need to add complex hardware devices such as pressure sensors, float switches, etc., so the hardware cost is significantly reduced. In the prior art, it is necessary to add a pressure detection device, wiring and computer board interface, or to add a float switch and a float device, which increases the hardware cost and installation cost.

[0081] In addition, the embodiment of the present invention can quickly determine whether the drain pipe is blocked by detecting the rotation of the impeller in real time, and perform the cleaning operation in time, with faster feedback speed, which meets the user's demand for efficiency and convenience. In the prior art, drainage failure is judged by detecting water level changes, and the feedback speed is slow; or it is judged by the height change of the float device, which also has the problem of untimely feedback.

[0082] Therefore, the embodiment of the present invention simplifies the process of dishwasher drainage detection, has a simple device setting, low detection cost, and timely detects the drainage condition of the dishwasher, ensuring the smooth operation of the dishwasher drainage function and improving the user experience.

[0083] Reference Figure 2 , shows a flowchart of another method for detecting drainage of a dishwasher provided by an embodiment of the present invention, wherein the method may specifically include the following steps:

[0084] Step 201, obtaining a pulse signal detected by the sensor; the pulse signal is detected by the sensor when the detection object on the impeller rotates to a position corresponding to the magnetic induction sensor;

[0085] The method of the embodiment of the present invention can be applied to various types of dishwashers, such as household dishwashers, commercial dishwashers, built-in dishwashers, etc. During the drainage process, the dishwasher monitors the rotation of the impeller in real time through the built-in magnetic induction sensor. When the detection object (such as a magnetic mark or magnetic material) on the impeller rotates to a position corresponding to the magnetic induction sensor, the sensor detects a corresponding pulse signal.

[0086] In some examples, the pulse signal can also be obtained in combination with external factors such as the dishwasher's operating history data, current drainage volume, drainage pressure, etc., and the pulse signal can be comprehensively judged through big data analysis and artificial intelligence technology. For example, by analyzing the frequency, amplitude and duration of the pulse signal, it can be determined whether the impeller is rotating normally, whether there is blockage or other abnormal conditions.

[0087] In some examples, the dishwasher can obtain the pulse signal and use intelligent analysis technology to comprehensively evaluate the operating status of the drainage system in combination with the physical characteristics of the drainage pipe, such as material, length, and curvature. For example, by analyzing the changing trend of the pulse signal, it is possible to predict whether the drainage pipe is at risk of blockage, so that corresponding measures can be taken in advance.

[0088] like Figure 3 A diagram of a dishwasher system component for implementing a dishwasher drainage detection method provided by an embodiment of the present invention is shown, and the specific contents are as follows:

[0089] In some embodiments, the dishwasher can be composed of components such as an air inlet fan, an air inlet duct, a cutlery basket, a spray arm, a washing pump, a water inlet pipe, a drain pipe, a pulse detection device, an inner cavity, and a cutlery basket; wherein the water inlet pipe injects water into the inner cavity of the dishwasher, the cutlery basket is used to place the cutlery that needs to be washed, the washing pump and the heater are responsible for driving the water in the inner cavity and heating it, and then spraying it out through the spray arm to continuously circulate and wash the cutlery, the pulse detection device and the drain pipe are responsible for detecting whether the pipeline is blocked and discharging the washing water, and the air inlet fan and the air inlet duct are responsible for drying the cleaned cutlery.

[0090] By acquiring pulse signals in a variety of ways, the system can accurately identify the rotation of the impeller, thereby providing reliable data support for subsequent drainage pipe blockage judgment. This multi-channel information acquisition method not only improves the intelligence level of the dishwasher, but also lays the foundation for the stable operation of the drainage system.

[0091] Reference Figure 4 , is a specific component diagram of a drainage detection device for a dishwasher provided by an embodiment of the present invention, and the specific contents are as follows:

[0092] A small impeller is installed in the drain pipe of the dishwasher, and a partially arc-shaped magnetic block is installed on the impeller. A pulse detection device is installed outside the drain pipe. When the dishwasher drains, the water flow drives the impeller to rotate, and the magnetic block rotates synchronously. When it rotates to the pulse device, the magnetism is used to cause the spring to close, thereby generating a pulse signal.

[0093] Step 202, determining the rotation status of the impeller according to the pulse signal;

[0094] In the embodiment of the present invention, the rotation of the impeller can be determined based on the characteristics of the pulse signal in combination with the design of the drainage system of the dishwasher. The characteristics of the pulse signal may include pulse time, pulse frequency, pulse amplitude, etc. These characteristics can reflect the rotation state of the impeller, such as rotation speed, rotation smoothness, whether there is an abnormality, etc.

[0095] In some embodiments, step 202 may include the following sub-steps:

[0096] Sub-step S11, determining the pulse time of the pulse signal;

[0097] In the embodiment of the present invention, the relationship between the actual pulse time and the preset threshold time can be compared by analyzing the pulse signal detected by the sensor. The pulse time refers to the time interval from the rising edge to the falling edge of the pulse signal, which can reflect the rotation speed and rotation state of the impeller.

[0098] In some examples, the pulse time of the pulse signal can be determined by using a high-precision time measurement technology, such as using a high-frequency clock signal to sample the pulse signal, so as to accurately calculate the pulse time. Specifically, when the detection object on the impeller rotates to a position corresponding to the magnetic induction sensor, the sensor detects a pulse signal. By recording the time points of the rising edge and the falling edge of the pulse signal, the pulse time can be calculated.

[0099] In some examples, the pulse time of the pulse signal can also be determined by combining the operation history data of the dishwasher, the current drainage volume, drainage pressure and other external factors, and by using big data analysis and artificial intelligence technology to make a comprehensive judgment on the pulse time. For example, by analyzing the fluctuation of the pulse time, it can be determined whether the impeller is rotating normally, whether there is a blockage or other abnormal conditions.

[0100] By comparing the pulse time of the pulse signal with the preset threshold, the system can accurately identify the rotation of the impeller, thus providing reliable data support for the subsequent drainage pipe blockage judgment. This multi-channel information acquisition method not only improves the intelligence level of the dishwasher, but also lays the foundation for the stable operation of the drainage system.

[0101] Sub-step S12, determining the rotation condition of the impeller according to the pulse time of the pulse signal.

[0102] If the pulse time of the pulse signal is greater than a preset time threshold, it is determined that the impeller rotates abnormally; if the pulse time of the pulse signal is zero, it is determined that the impeller stops rotating.

[0103] In the embodiment of the present invention, the system determines the rotation of the impeller by analyzing the pulse time of the pulse signal. The pulse time refers to the time interval from the rising edge to the falling edge of the pulse signal, which can reflect the rotation speed and rotation state of the impeller. However, the precise calculation of the pulse time is not necessary. The system only needs to compare the pulse time with the preset time threshold to quickly determine whether the rotation of the impeller is normal.

[0104] In some examples, the pulse time comparison process may include the following steps:

[0105] Obtaining pulse signals: The system monitors the rotation of the impeller in real time through sensors. When the detection object on the impeller rotates to the position corresponding to the magnetic induction sensor, the sensor will detect a pulse signal.

[0106] Record pulse time: The system records the time points of the rising and falling edges of the pulse signal to obtain the pulse time.

[0107] Comparison with preset threshold: The system compares the pulse time with the preset time threshold. The preset threshold is set according to the normal operation status of the dishwasher, usually including an upper limit and a lower limit.

[0108] If the pulse time is within the preset threshold range, it indicates that the impeller rotation speed is normal, and the system determines that the impeller rotation is normal.

[0109] If the pulse time is greater than the preset upper threshold, it indicates that the impeller is rotating too slowly or there is a jamming phenomenon, and the system determines that the impeller is rotating abnormally.

[0110] If the pulse time is zero, it indicates that the impeller has completely stopped rotating and the system determines that the impeller has stopped rotating.

[0111] In some examples, the setting of the preset threshold can be optimized through big data analysis and artificial intelligence technology in combination with the operation history data of the dishwasher, the current drainage volume, drainage pressure and other external factors. For example, the system can analyze the normal rotation speed range of the impeller under different working conditions based on the historical operation data, so as to set a more reasonable preset threshold.

[0112] Reference Figure 5 , is a pulse time schematic diagram of a drainage detection device for a dishwasher provided by an embodiment of the present invention, and the specific contents are as follows:

[0113] In the embodiment of the present invention, the generation of the pulse signal and the determination of the pulse time are based on the rotation state of the impeller and the operation of the drain pipe. Specifically, when the impeller rotates to a position corresponding to the pulse device, the pulse device causes the spring to close through magnetic action, thereby generating a pulse signal. The duration of the pulse signal is the pulse time t, which can reflect the rotation speed of the impeller and the operation state of the drain pipe.

[0114] The process of generating a pulse signal: the impeller rotates to the position of the pulse device: when the detection object (such as a magnetic mark or magnetic material) on the impeller rotates to the position corresponding to the pulse device, the pulse device detects the change in the magnetic field.

[0115] Magnetism causes the spring to close: The pulse device causes the internal spring to close through magnetism, forming a closed loop of electrical signals, thereby generating a pulse signal.

[0116] Duration of pulse signal: The duration t of pulse signal is the time interval from closing of the spring to reopening of the spring. This time interval is directly related to the rotation speed of the impeller. The faster the rotation speed, the shorter the pulse time t; the slower the rotation speed, the longer the pulse time t.

[0117] Judgment of the pulse time t: Under normal circumstances: When the drain pipe is operating normally, the water flow velocity is stable, and the rotation speed of the impeller also remains stable. At this time, the pulse time t will be maintained within a preset normal range (for example, t < t1), indicating that the drain pipe and the impeller are operating normally. The water flow velocity becomes slower or unstable: When there is a partial blockage in the drain pipe, the water flow velocity will become slower or unstable, resulting in a decrease or uneven rotation speed of the impeller. At this time, the pulse time t will be greater than the preset time threshold t1, indicating abnormal rotation of the impeller. The water flow completely stops: When the drain pipe is completely blocked, the water cannot pass through, and the impeller stops rotating. At this time, the pulse time t is zero, indicating that the impeller has completely stopped rotating. Relationship between the pulse time t and the blockage of the drain pipe: t > t1: When the pulse time t is greater than the preset time threshold t1, the system determines that there is a partial blockage in the drain pipe, resulting in a slower or unstable water flow velocity. At this time, the system can take corresponding measures, such as controlling the drainage pump to reverse to form a negative pressure to loosen the blockage. t = 0: When the pulse time t is zero, the system determines that the drain pipe is completely blocked, resulting in the impeller stopping rotating. At this time, the system will output a reminder message to prompt the user to clean the dishwasher to restore the normal operation of the drainage system.

[0118] The judgment of the pulse time t does not require complex calculations. Only by comparing the pulse time with the preset time threshold t1 can the rotation state of the impeller and the blockage situation of the drain pipe be quickly judged. Real-time monitoring: By real-time monitoring the change of the pulse time t, the system can timely detect the blockage problem of the drain pipe and take corresponding treatment measures to prevent the drainage system from failing to work properly due to blockage.

[0119] By comparing the pulse time with the preset threshold, the system can quickly judge whether the rotation of the impeller is normal, thus providing reliable data support for the subsequent judgment of the blockage of the drain pipe. This simple and efficient judgment method not only improves the intelligent level of the dishwasher but also lays a foundation for the stable operation of the drainage system.

[0120] Step 203, determine whether the drain pipe is blocked according to the rotation condition of the impeller;

[0121] The method of the embodiment of the present invention can judge whether there is a blockage in the drain pipe according to the rotation condition of the impeller and in combination with the design of the drainage system of the dishwasher. The rotation condition of the impeller can reflect the water flow state in the drain pipe. For example, if the rotation of the impeller is abnormal, it means that the drain pipe is generally blocked; if the impeller stops rotating, it means that the drain pipe is completely blocked.

[0122] In some embodiments, step 203 may include the following sub-steps:

[0123] Sub-step S21, if the rotation condition of the impeller is that the impeller rotates abnormally, then control the drainage pump to reverse to form a negative pressure in the dishwasher;

[0124] In the embodiment of the present invention, when the impeller is detected to be rotating abnormally, such as the impeller rotation speed is significantly reduced, the rotation is not stable, or there is a jam, the system will automatically determine that the drain pipe may be blocked. In order to alleviate the blockage, the system will immediately activate the emergency treatment mechanism and control the drain pump to reverse, thereby forming a negative pressure inside the dishwasher.

[0125] In some examples, the drain pump reversal operation may be achieved by the following steps:

[0126] Detection of abnormal signals: The system monitors the rotation of the impeller in real time through sensors. When abnormal impeller rotation is detected, a corresponding abnormal signal is generated.

[0127] Trigger reverse command: After receiving the abnormal signal, the system immediately sends a reverse command to the drainage pump, requiring the drainage pump to change its working direction.

[0128] Forming negative pressure: After receiving the reverse command, the drain pump switches from the original drainage mode to the suction mode. At this time, the drain pump forms negative pressure inside the dishwasher through suction, causing the blockage in the drain pipe to loosen or be sucked out.

[0129] Monitoring the effect of negative pressure: During the reversal of the drain pump, the system will continuously monitor the pressure changes inside the dishwasher and the rotation of the impeller to evaluate the effect of negative pressure. If the negative pressure successfully relieves the blockage, the rotation of the impeller will gradually return to normal; if the negative pressure effect is not good, the system may take further measures, such as multiple reversals or starting other cleaning programs.

[0130] In some examples, the control of drain pump reversal can also be combined with external factors such as the dishwasher's operating history data, current drainage volume, drainage pressure, etc., and the effect of the reversal operation can be intelligently evaluated through big data analysis and artificial intelligence technology. For example, by analyzing the pressure changes in the drain pipe and the rotation of the impeller during the reversal process, the system can determine whether the reversal operation is effective and whether further measures are needed.

[0131] In addition, the reversal operation of the drainage pump can also be combined with data from other sensors, such as flow sensors, pressure sensors, etc., to conduct a multi-dimensional comprehensive analysis. For example, by analyzing the changes in water flow velocity and drainage pressure during the reversal process, the system can more accurately determine the effect of the reversal operation.

[0132] By controlling the drainage pump to reverse and form negative pressure, the system can effectively relieve the blockage of the drainage pipe and restore the normal operation of the drainage system. This intelligent operation method not only improves the fault handling ability of the dishwasher, but also provides users with a more stable and reliable use experience.

[0133] Sub-step S22: if the rotation condition of the impeller is that the impeller stops rotating, outputting a reminder message, wherein the reminder message is used to remind the user to clean the dishwasher.

[0134] In the embodiment of the present invention, when the system detects that the impeller stops rotating, it indicates that the drain pipe may be completely blocked, so that water cannot flow through and the impeller cannot continue to rotate. At this time, the system will immediately determine that the blockage of the drain pipe has reached a serious level, and activate the reminder mechanism to output a reminder message to the user, prompting the user to clean the dishwasher.

[0135] In some examples, the process of outputting reminder information may include the following steps:

[0136] Detection of stop rotation signal: The rotation of the impeller is monitored in real time by the sensor, and when it is detected that the impeller stops rotating, a corresponding stop signal is generated.

[0137] Trigger reminder mechanism: After receiving the stop signal, the reminder mechanism is immediately started and a reminder message is generated.

[0138] Output reminder information: Reminder information can be output in a variety of ways, such as displaying reminder text on the dishwasher display, emitting a beep or voice prompt, or pushing a notification through a mobile phone APP. The content of the reminder information can include "The drain pipe is blocked, please clean the dishwasher" to clearly inform the user of the current problem and the measures to be taken.

[0139] Record reminder events: This reminder event will be recorded in the dishwasher's operation log so that users or maintenance personnel can view historical problem records.

[0140] In some examples, the output reminder information can also be combined with the dishwasher's operating history data, current drainage volume, drainage pressure and other external factors, and the blockage situation can be further analyzed through big data analysis and artificial intelligence technology. For example, by analyzing the historical blockage records and the severity of the current blockage, it can be determined whether the user needs to clean it immediately or whether there are other potential problems.

[0141] In addition, the output method of reminder information can be personalized according to the user's preferences. For example, the user can choose to receive reminder information through the mobile phone APP, or receive voice prompts through the voice assistant. This personalized reminder method not only improves the convenience of user experience, but also provides users with more intelligent services.

[0142] By outputting reminder information, users can be informed of the blockage of the dishwasher in time to avoid the dishwasher not being able to work properly due to the blockage of the drain pipe. This intelligent reminder mechanism not only improves the fault handling ability of the dishwasher, but also provides users with a more intimate and efficient user experience.

[0143] Step 204: If the drain pipe is blocked, clean the drain pipe.

[0144] The method of the embodiment of the present invention can automatically or manually start a cleaning program to clean the drain pipe after determining that the drain pipe is blocked, and the controller can control the dishwasher drain pump to reverse. The cleaning program can include physical cleaning, chemical cleaning, mechanical cleaning and other methods. The specific cleaning method can be selected according to factors such as the material of the drain pipe, the degree of blockage, and the type of blockage.

[0145] In some examples, the drain pipe can also be cleaned by using high-pressure water flow, rotating brush head, chemical solvent and other equipment or materials to flush, dissolve or mechanically remove the blockage. These cleaning methods can be combined with the drainage system design of the dishwasher to ensure the cleaning effect while avoiding secondary damage to the drain pipe.

[0146] In some examples, when the dishwasher drain pump reverses and forms a negative pressure treatment, the drain pump operates normally after running continuously for a period of time, drains water again and detects the pulse time to determine the relationship between the pulse time and the preset time threshold. If the pulse time is still greater than the preset time threshold, it means that the dishwasher cannot handle the blockage by itself, and the controller stops the operation and reminds the user to manually clean the drain pipe.

[0147] By cleaning the drain pipe in a variety of ways, the blockage of the drainage system can be accurately identified, thus providing reliable data support for subsequent drain pipe cleaning. This multi-channel information cleaning method not only improves the intelligence level of the dishwasher, but also lays the foundation for the stable operation of the drainage system.

[0148] In the embodiment of the present invention, after the dishwasher turns on the drainage function, the pulse signal detected by the sensor is obtained in real time; then, the rotation of the impeller is judged according to the characteristics of the pulse signal; then, according to the rotation of the impeller, whether the drain pipe is blocked is further judged; finally, if the drain pipe is detected to be blocked, the drain pipe is automatically cleaned. The embodiment of the present invention simplifies the process of dishwasher drainage detection through the detection and analysis of pulse signals. The device is simple to set up, the detection cost is low, and the drainage condition of the dishwasher can be detected in time, ensuring the smooth operation of the dishwasher drainage function and improving the user experience.

[0149] Reference Figure 6 , shows a flowchart of specific steps of a drainage detection method for a dishwasher provided by an embodiment of the present invention, and the method may specifically include the following steps:

[0150] 1. The dishwasher is operating normally

[0151] After the dishwasher is started, it washes the dishes according to the preset washing program. The washing program includes multiple stages such as pre-wash, main wash, rinsing and drying. In each stage, the dishwasher sprays water through the spray arm to wash the dishes.

[0152] 2. Drain water according to the set procedure

[0153] When the dishwasher drains water according to the set program, the system will automatically enter the drainage step. The main purpose of the drainage stage is to drain the wastewater generated during the cleaning process out of the dishwasher to prepare for the subsequent rinsing and drying stages.

[0154] 3. Water flow driven pulse detection device in the drainage pipe

[0155] During the drainage process, sewage is discharged from the dishwasher through the drain pipe. A pulse detection device is installed in the drain pipe, which generates a pulse signal driven by water flow. The pulse detection device usually consists of an impeller and a magnetic induction sensor. The impeller rotates under the drive of water flow. When the detection object (such as a magnetic mark) on the impeller rotates to the position corresponding to the magnetic induction sensor, the sensor will detect a pulse signal.

[0156] 4. The controller activates the pulse detection device

[0157] The controller monitors the pulse signal generated by the pulse detection device in real time. The controller ensures the stability and accuracy of the pulse signal by adjusting the working parameters of the pulse detection device. The controller also counts the pulse time t of the pulse signal, that is, the duration of the pulse signal.

[0158] 5. Comparison of pulse time t and preset time t1

[0159] The controller compares the actually detected pulse time t with the preset pulse time t1 of the dishwasher system. The preset time t1 is a threshold value set according to the pulse time when the dishwasher drains normally.

[0160] If t≤t1: It indicates that the water flow rate in the drain pipe is normal and the drainage function is normal. The dishwasher will continue to perform the subsequent cleaning procedures until the entire cleaning process is completed.

[0161] If t>t1: It indicates that the water flow in the drain pipe slows down and there may be a partial blockage. At this time, the controller will determine that the drain pipe is blocked and initiate corresponding treatment measures.

[0162] If t=0: it means that the water flow in the drain pipe has completely stopped, the impeller has stopped rotating, and the drain pipe is completely blocked. At this time, the controller will immediately stop the operation of the dishwasher and display a drainage fault to remind the user to manually clean the drain pipe.

[0163] 6. Partial blockage treatment: Drain pump reverses to form negative pressure

[0164] When the controller detects that the pulse time t>t1, it indicates that the drain pipe is partially blocked. In order to relieve the blockage, the controller will control the drain pump to reverse and form negative pressure. After the drain pump reverses, a negative pressure environment is formed inside the dishwasher, causing the blockage in the drain pipe to loosen or be sucked out, thereby restoring the normal drainage function of the drain pipe.

[0165] 7. After running continuously for a period of time, restore the drainage pump to normal operation

[0166] After the drainage pump reverses to form negative pressure, the controller will continue to operate for a period of time to ensure that the blockage is effectively cleared. After a period of time, the controller will restore the normal operation of the drainage pump and resume the drainage operation.

[0167] 8. Detect the pulse time t again and judge

[0168] After the drain pump resumes operation, the controller will detect the pulse time t again and compare it with the preset time t1.

[0169] If t≤t1: It indicates that the blockage problem of the drain pipe has been solved and the drainage function has returned to normal. The dishwasher will continue to perform the subsequent cleaning procedures until the entire cleaning process is completed.

[0170] If t>t1: It indicates that the blockage problem of the drain pipe has not been completely solved and the dishwasher cannot handle the blockage by itself. At this time, the controller will stop the operation of the dishwasher and display a fault to remind the user to manually clean the drain pipe.

[0171] 9. Complete blockage processing: stop running and remind the user to clean up

[0172] When the controller detects that the pulse time t=0, it indicates that the drain pipe is completely blocked and water cannot flow through. At this time, the controller will immediately stop the operation of the dishwasher and display a drainage fault to remind the user to manually clean the drain pipe. The user needs to manually clean the blockage in the drain pipe according to the reminder information to restore the normal drainage function of the dishwasher.

[0173] 10. End of cleaning process

[0174] After completing the drainage step and confirming that the drain pipe is not blocked, the dishwasher will continue to perform the subsequent cleaning program until the entire cleaning process is completed. After the cleaning program is completed, the dishwasher will automatically enter the drying stage and finally complete the cleaning and drying of the dishes.

[0175] The embodiment of the present invention can timely detect and handle the blockage problem of the drain pipe by monitoring the pulse time t of the pulse signal in real time and comparing it with the preset time t1. In the case of partial blockage, the system automatically cleans the blockage by reversing the drain pump to form negative pressure; in the case of complete blockage, the system will stop running and remind the user to clean it manually. This logic not only simplifies the drainage detection process, but also improves the intelligence level of the dishwasher, ensures the smooth operation of the drainage function, and improves the user experience.

[0176] It should be noted that, for the sake of simplicity, the method embodiments are described as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0177] Reference Figure 7 , shows a structural block diagram of a drainage detection device for a dishwasher provided by an embodiment of the present invention, which may specifically include the following modules:

[0178] A rotation detection module 301, used to detect the rotation of the impeller after the dishwasher starts the drainage function;

[0179] A blockage determination module 302, used to determine whether the drain pipe is blocked according to the rotation of the impeller;

[0180] The drain pipe cleaning module 303 is used to clean the drain pipe if the drain pipe is blocked.

[0181] In an embodiment of the present invention, the dishwasher further includes a sensor, a detection object is provided on the impeller, and the rotation detection module includes:

[0182] A pulse signal acquisition submodule, used to acquire the pulse signal detected by the sensor; the pulse signal is detected by the sensor when the detection object on the impeller rotates to a position corresponding to the sensor;

[0183] The rotation condition acquisition submodule is used to determine the rotation condition of the impeller according to the pulse signal.

[0184] In an embodiment of the present invention, the device comprises:

[0185] A pulse time determination module, used to determine the pulse time of the pulse signal;

[0186] The rotation condition determination submodule is used to determine the rotation condition of the impeller according to the pulse time of the pulse signal.

[0187] In an embodiment of the present invention, the rotation condition determination submodule includes:

[0188] The rotation abnormality determination unit determines that the impeller rotates abnormally if the pulse time of the pulse signal is greater than a preset time threshold.

[0189] In an embodiment of the present invention, the dishwasher further includes a drainage pump disposed in the drainage pipe, and the blockage determination module includes:

[0190] The drainage pump control submodule is used for controlling the drainage pump to rotate in reverse if the rotation condition of the impeller is abnormal, so as to form a negative pressure in the dishwasher.

[0191] In an embodiment of the present invention, the rotation condition determination submodule includes:

[0192] The impeller stop determination unit is used to determine that the impeller stops rotating if the pulse time of the pulse signal is zero.

[0193] In an embodiment of the present invention, the congestion determination module includes:

[0194] The information reminder submodule is used to output a reminder message if the rotation condition of the impeller is that the impeller stops rotating, and the reminder message is used to remind the user to clean the dishwasher.

[0195] In the embodiment of the present invention, after the dishwasher turns on the drainage function, the rotation of the impeller is detected in real time; then, according to the rotation of the impeller, it is determined whether the drain pipe is blocked; finally, if the drain pipe is detected to be blocked, the drain pipe is automatically cleaned. The embodiment of the present invention simplifies the process of dishwasher drainage detection, the device is simple to set up, the detection cost is low, and the drainage condition of the dishwasher is detected in time, which ensures the smooth operation of the dishwasher drainage function and improves the user experience.

[0196] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0197] An embodiment of the present invention further provides a dishwasher, comprising:

[0198] It includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, each process of the above-mentioned dishwasher drainage detection method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0199] An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various processes of the above-mentioned dishwasher drainage detection method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0200] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0201] It will be appreciated by those skilled in the art that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0202] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0203] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0204] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0205] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0206] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0207] The above is a detailed introduction to a dishwasher drainage detection method, device, dishwasher and computer-readable storage medium provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for a person skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A method for detecting drainage of a dishwasher, characterized in that: The dishwasher comprises a drain pipe and an impeller arranged on the drain pipe, and the method comprises: After the dishwasher starts the drainage function, detecting the rotation of the impeller; Determining whether the drain pipe is blocked according to the rotation of the impeller; If the drain pipe is clogged, clean the drain pipe.

2. The method for detecting drainage of a dishwasher according to claim 1, characterized in that: The dishwasher further includes a sensor, and a detection object is provided on the impeller. The detection of the rotation of the impeller includes: Acquire a pulse signal detected by the sensor; the pulse signal is detected by the sensor when the detection object on the impeller rotates to a position corresponding to the sensor; The rotation condition of the impeller is determined according to the pulse signal.

3. The method for detecting drainage of a dishwasher according to claim 2, characterized in that: Determining the rotation condition of the impeller according to the pulse signal includes: determining a pulse time of the pulse signal; The rotation condition of the impeller is determined according to the pulse time of the pulse signal.

4. The method for detecting drainage of a dishwasher according to claim 3, characterized in that: Determining the rotation of the impeller according to the pulse time of the pulse signal includes: If the pulse time of the pulse signal is greater than a preset time threshold, it is determined that the impeller rotates abnormally.

5. The method for detecting drainage of a dishwasher according to claim 4, characterized in that: The dishwasher further includes a drainage pump disposed in the drainage pipe, and determining whether the drainage pipe is blocked according to the rotation of the impeller includes: If the rotation condition of the impeller is abnormal, the drainage pump is controlled to rotate in reverse to form a negative pressure in the dishwasher.

6. The method for detecting drainage of a dishwasher according to claim 3, characterized in that: Determining the rotation of the impeller according to the pulse time of the pulse signal includes: If the pulse time of the pulse signal is zero, it is determined that the impeller stops rotating.

7. The method for detecting drainage of a dishwasher according to claim 6, characterized in that: Determining whether the drain pipe is blocked according to the rotation of the impeller includes: If the rotation condition of the impeller is that the impeller stops rotating, a reminder message is output, where the reminder message is used to remind the user to clean the dishwasher.

8. A drainage detection device for a dishwasher, characterized in that: The dishwasher comprises a drain pipe and an impeller arranged on the drain pipe, and the device comprises: A rotation detection module, used to detect the rotation of the impeller after the dishwasher starts the drainage function; A blockage determination module, used to determine whether the drain pipe is blocked according to the rotation of the impeller; The drain pipe cleaning module is used to clean the drain pipe if the drain pipe is blocked.

9. A dishwasher, characterized in that: include: A processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the steps of the drainage detection method for the dishwasher according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the drainage detection method for the dishwasher according to any one of claims 1 to 7 are implemented.

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