A water inlet valve leakage detection processing method, a dish washing machine, and a medium

Abstract

The present application relates to a kind of water inlet valve leakage detection processing method, dish washer and medium.The method includes the following steps: S1, the flow value of non-water inlet valve normal working time is detected.S2, whether flow value is greater than first set value is judged.S3, if yes, then the abnormal number of times is accumulated and increased 1, and water inlet valve is controlled according to preset frequency and executes the on-off operation of preset number of times.S4, whether abnormal number of times is greater than second set value is judged.S5, if yes, then determine water inlet valve failure.S6, if no, then jump to step S1.The present application can avoid machine overflow, improve user experience and reduce customer complaints by detecting flow change state to determine water inlet valve leakage and automatically take quick on-off, drainage measures or alarm prompt.

Description

Technical Field

[0001] This invention relates to the field of water inlet valve detection technology, and in particular to a water inlet valve leakage detection and treatment method, a dishwasher, and a medium. Background Technology

[0002] Most modern dishwashers are equipped with a water flow sensor. The controller inside the dishwasher uses the detection results from the water flow sensor to control the motor, water inlet valve, and drain valve, thereby controlling the water inlet and drain processes of the dishwasher.

[0003] However, the water inlet valve may not close tightly, causing water to continuously enter the machine, which means there is a water inlet valve leakage problem, or even a water overflow problem, thereby reducing the user experience and increasing customer complaints. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method for detecting and handling leakage in an inlet valve, a dishwasher, and a medium.

[0005] The technical solution adopted by this invention to solve its technical problem is: a method for detecting and handling leakage in an inlet valve, comprising the following steps:

[0006] S1. Detect the flow rate during abnormal operation of the inlet valve;

[0007] S2. Determine whether the flow rate value is greater than a first preset value;

[0008] S3. If so, the number of abnormal occurrences will be increased by 1, and the inlet valve will be controlled to perform the on / off operation a preset number of times at a preset frequency.

[0009] S4. Determine whether the number of abnormal occurrences is greater than a second preset value;

[0010] S5. If so, the inlet valve is determined to be faulty;

[0011] S6. If not, proceed to step S1.

[0012] Furthermore, in the water inlet valve leakage detection and processing method of the present invention, step S5 includes:

[0013] When the number of abnormal occurrences exceeds the second set value, the inlet valve is determined to be faulty, an alarm is triggered, and drainage is initiated.

[0014] Furthermore, in the water inlet valve leakage detection and processing method of the present invention, step S5 includes:

[0015] S501. When the number of abnormal occurrences exceeds the second preset value, the inlet valve is determined to be faulty, an alarm is triggered, and drainage is initiated for a second preset duration.

[0016] S502. Detect the current flow rate value of the inlet valve;

[0017] S503. Determine whether the current flow rate value is greater than the third preset value;

[0018] S504. If so, then start the third preset drainage time.

[0019] Furthermore, in the water inlet valve leakage detection and processing method of the present invention, step S6 includes:

[0020] When the number of abnormal occurrences is less than or equal to the second set value, the detection of the flow rate value is paused for a first preset duration, and then the process proceeds to step S1.

[0021] Furthermore, in the water inlet valve leakage detection and processing method of the present invention, the step of controlling the water inlet valve to perform on / off operations a preset number of times at a preset frequency includes:

[0022] The inlet valve is controlled by a countdown timer to complete a preset number of on / off operations at a preset frequency.

[0023] Furthermore, in the water inlet valve leakage detection and processing method of the present invention, step S3 further includes:

[0024] When the flow rate is greater than the first set value, the number of abnormalities is increased by 1. Furthermore, based on the current accumulated number of abnormalities, the current preset number of times the inlet valve is turned on and off is determined from the pre-stored correspondence table between the number of abnormalities and the preset number of times the inlet valve is turned on and off at a preset frequency. The inlet valve is then controlled to perform the current preset number of on / off operations at a preset frequency.

[0025] Furthermore, in the water inlet valve leakage detection and treatment method of the present invention, the method further includes:

[0026] S0. Determine if the inlet valve is not working properly; if so, proceed to step S1.

[0027] In addition, the present invention also provides a dishwasher, including a water inlet valve, a memory and a processor, wherein the memory stores a computer program, and the processor executes the steps of the water inlet valve leakage detection and processing method described above by calling the computer program stored in the memory.

[0028] Furthermore, in the dishwasher described in this invention, the dishwasher also includes a flow meter, which is used to acquire the flow rate value of the water inlet valve and transmit it to the processor for processing; or

[0029] The dishwasher also includes a water level sensor, which is used to obtain the flow rate value of the water inlet valve and transmit it to the processor for processing.

[0030] In addition, the present invention also provides a computer-readable storage medium storing a computer program adapted for loading by a processor to perform the steps of the inlet valve leakage detection and processing method described above.

[0031] The water inlet valve leakage detection and treatment method, dishwasher and medium of the present invention have the following beneficial effects: The present invention can automatically take quick on / off, drainage measures or alarm prompts by detecting the water inlet valve leakage status by detecting the flow change status, which can avoid machine overflow, improve user experience and reduce customer complaints. Attached Figure Description

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0033] Figure 1 This is a flowchart of the water inlet valve leakage detection and processing method provided in the embodiments of the present invention;

[0034] Figure 2 This is a flowchart of the water inlet valve leakage detection and processing method provided in the embodiments of the present invention;

[0035] Figure 3 This is a flowchart of the water inlet valve leakage detection and processing method provided in the embodiments of the present invention;

[0036] Figure 4 This is a flowchart of the water inlet valve leakage detection and processing method provided in the embodiment of the present invention. Detailed Implementation

[0037] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0038] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0039] In a preferred embodiment, reference Figure 1 The water inlet valve leakage detection and handling method of this embodiment includes the following steps:

[0040] S1. Detect the flow rate during periods of abnormal operation of the inlet valve. Specifically, the flow rate during abnormal operation of the inlet valve can be obtained from a flow detection unit such as a flow meter or water level sensor.

[0041] It should be noted that the abnormal flow rate value in this invention refers to abnormal flow rate changes or abnormal water volume changes, that is, the total water volume during an abnormal operation. For example, if the abnormality detection trigger value, or the first set value, is set to 0.5L (liters), then whether 0.5L enters in 10 seconds or 0.5L enters in 1 minute, an abnormality count will be performed. For instance, when a dishwasher starts its washing cycle, it initially fills with 3L of water, then enters the washing mode with the washing pump operating. If an additional 0.5L of water is detected during the washing process, this will be considered an abnormality. The abnormal flow rate value at this time is 0.5L, and the total water volume is 3L + 0.5L.

[0042] S2. Determine whether the flow rate when the inlet valve is not operating normally is greater than the first set value.

[0043] S3. If so, the number of abnormal occurrences will be increased by 1, and the inlet valve will be controlled to perform the on / off operation a preset number of times at a preset frequency.

[0044] It should be noted that the inlet valve operates on and off at a preset frequency, also known as rapid on / off. One rapid on / off cycle refers to the inlet valve opening and closing quickly once. For example, the on / off times can be preset, such as 0.5 seconds on and 0.5 seconds off, or 1 second on and 1 second off, etc. The preset number of cycles can be 3, 4, 5, 8, etc., with no specific limitation on duration or number of cycles; they can be set as needed. Alternatively, completing 3 rapid on / off cycles can be considered a single rapid on / off execution cycle, and the execution cycle is variable.

[0045] Alternatively, a countdown timer can be used to control the inlet valve to complete a preset number of on / off operations at a preset frequency. That is, within a rapid on / off execution cycle, determining whether the inlet valve needs rapid on / off operation only requires checking the value of the on / off count t1 (assuming t1 uses a countdown timer, on / off operation is required as long as t1 is not 0, and not required when t1 is 0). The value of t1 is only triggered when the number of abnormal operations is less than the set value. Whether to pause and wait only requires checking if the waiting timer is 0 (when using a countdown timer). Similarly, determining whether to open abnormal drainage can also be done by checking if the drainage countdown timer is 0 (when using a countdown timer).

[0046] S4. Determine if the number of abnormal occurrences exceeds the second set value.

[0047] S5. If yes, then the inlet valve is determined to be faulty. That is to say, when the number of abnormal occurrences exceeds the second set value, the inlet valve is determined to be faulty, an alarm is triggered, and drainage is initiated.

[0048] Optionally, refer to Figure 2 Step S5 includes:

[0049] S501. When the number of abnormal occurrences exceeds the second preset value, the inlet valve is determined to be faulty, an alarm is triggered, and the second preset drainage time is initiated.

[0050] S502, Detect the current flow rate of the inlet valve.

[0051] S503. Determine whether the current flow rate is greater than the third set value.

[0052] S504. If so, then start the third preset drainage time.

[0053] It should be noted that the initial drainage time, i.e., the second and third preset times, can be the same or different. Assume the machine starts running, takes in 3 liters of water, and then begins washing. If an inlet valve malfunction is detected during the washing process, the drainage time can be set longer. Because of the initial 3 liters of water, plus the water leaking in later, the water volume is relatively large, allowing for a longer drainage time. After one drainage cycle, if leakage continues, the subsequent water volume may be less, allowing for a shorter drainage time. Alternatively, both the second and third preset times can be set to a longer duration, or even the same value.

[0054] S6. If not, proceed to step S1. Alternatively, when the number of abnormal occurrences is less than or equal to the second set value, pause the detection of the flow rate for a first preset duration, and then proceed to step S1.

[0055] For example, when an inlet valve malfunction is detected, a rapid on / off cycle is set, such as 3 cycles. During the on / off cycle, the valve malfunction is not checked again. Simultaneously, at the end of the 3 cycles, there is a pause period T5 for malfunction detection, which is the first preset duration for pausing flow rate detection. Assuming T5 = 5 seconds, the on time for the 3 cycles is 0.5 seconds, and the off time is 0.5 seconds, then the total time is 5 seconds + 3... (0.5 + 0.5) = 8 seconds is a period during which no anomalies are detected. Similarly, no anomalies are detected during the period when the abnormal drainage is enabled.

[0056] refer to Figure 3The working principle of this invention is as follows: After a rapid on / off cycle, if leakage persists, for example by judging the abnormal flow rate value W1, the abnormality count continues, while simultaneously determining whether the abnormality count value has reached a second preset value. If the abnormality count value has not reached the second preset value, the rapid on / off cycle is executed again; if it has reached the second preset value, it is considered a fault in the inlet valve, an alarm is triggered, and drainage begins (no abnormality is detected during drainage). After determining a fault in the inlet valve, if an abnormal flow rate is detected again during the detection phase, and the flow rate change value W2 (different from W1) is greater than a third preset value, drainage is restarted. In other words, before determining a fault in the inlet valve, only the rapid on / off cycle of the inlet valve is performed, without water intake or drainage. When the abnormality count has not reached the second preset value, the flow rate value of the inlet valve continues to be monitored, and only the rapid on / off operation is performed to attempt to shut off the inlet valve again, thereby resolving the issue that the inlet valve may not be closed tightly rather than malfunctioning, avoiding the risk of misdiagnosis, and further improving the accuracy of fault diagnosis.

[0057] In this embodiment, the leakage of the inlet valve is determined by detecting changes in flow rate, and automatic measures such as rapid on / off switching, drainage, or alarm prompts are taken. This can prevent machine overflow, improve user experience, and reduce customer complaints.

[0058] In some embodiments of the water inlet valve leakage detection and processing method, step S3 further includes: when the flow rate is greater than the first set value, the number of abnormalities is increased by 1, and the current preset number of times the water inlet valve is turned on and off is determined from the pre-stored correspondence table of abnormalities and the preset number of times the water inlet valve is turned on and off at a preset frequency, based on the current accumulated number of abnormalities, and the water inlet valve is controlled to perform the current preset number of on and off operations at a preset frequency.

[0059] In other words, the preset number of times the fast on / off operation can be set according to the accumulated number of exceptions. Therefore, a corresponding table can be pre-stored, and the number of times can be preset. For example, the first exception trigger can be set to 3 times, the second trigger to 4 times, and so on. That is, the exception count can be used to look up the set number of fast on / off operations in the table. For example, 1 exception corresponds to 3 on / off operations, 2 exceptions correspond to 4 on / off operations, 3 exceptions correspond to 5 on / off operations, and so on.

[0060] In this embodiment, the leakage of the inlet valve is determined by detecting changes in flow rate, and automatic measures such as rapid on / off switching, drainage, or alarm prompts are taken. This can prevent machine overflow, improve user experience, and reduce customer complaints.

[0061] In some embodiments of the water inlet valve leakage detection and handling method, reference is made to Figure 4 Before step S1, step S0 is included, which determines whether the inlet valve is not working properly. If so, step S1 is executed.

[0062] For example, the judgment can be made based on the normal and abnormal operating times of the water inlet valve. Normal water inlet is usually the water inlet step or water replenishment process during the washing process, and there will be corresponding indicators to indicate that water inlet needs to be performed. Therefore, by excluding these normal water inlet instructions, when water inlet that does not occur when these normal water inlet instructions are detected, it is determined that the water inlet valve is in an abnormal operating state, that is, a leakage has occurred.

[0063] In this embodiment, the leakage of the inlet valve is determined by detecting changes in flow rate, and automatic measures such as rapid on / off switching, drainage, or alarm prompts are taken. This can prevent machine overflow, improve user experience, and reduce customer complaints.

[0064] In another preferred embodiment, the dishwasher of this embodiment includes a flow detection unit and a water inlet valve, as well as a memory and a processor. The memory stores a computer program, and the processor executes the steps of the water inlet valve leakage detection and processing method described above by calling the computer program stored in the memory.

[0065] Alternatively, the flow detection unit can be a flow meter, water level sensor, etc., used to acquire the flow value of the inlet valve and transmit it to the processor for processing.

[0066] Specifically, the flow meter works by counting pulses to determine how much water has entered. For example, 200 pulses correspond to 1L of water, and 0.5L corresponds to 100 pulses. If a different method of water detection is used, such as a water level sensor, then the water inflow is counted according to that method, which can be found in existing technologies and will not be elaborated here.

[0067] It should be noted that the processor of this invention provides computing and control capabilities to support the operation of the entire dishwasher. It should be understood that in the embodiments of this application, the processor can be a Central Processing Unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0068] This embodiment detects changes in flow rate to determine if the inlet valve is leaking, enabling automatic and rapid on / off switching, drainage measures, or alarm prompts. This prevents machine overflow, ensures more efficient and normal operation, improves user experience, and reduces customer complaints.

[0069] In another preferred embodiment, the computer-readable storage medium of this embodiment stores a computer program adapted for loading by a processor to perform the steps of the inlet valve leakage detection and processing method described above.

[0070] Specifically, the computer-readable storage medium of the present invention can be any computer-readable storage medium capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a magnetic disk, or an optical disk.

[0071] This embodiment detects changes in flow rate to determine if the inlet valve is leaking, enabling automatic and rapid on / off switching, drainage measures, or alarm prompts. This prevents machine overflow, ensures more efficient and normal operation, improves user experience, and reduces customer complaints.

[0072] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0073] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0074] It is understood that the above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can freely combine the above technical features without departing from the concept of the present invention, and can also make several modifications and improvements, all of which fall within the protection scope of the present invention. Therefore, all equivalent transformations and modifications made with respect to the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A method for detecting and handling leakage in an inlet valve, characterized in that, Includes the following steps: S1. Detect the flow rate during abnormal operation of the inlet valve; S2. Determine whether the flow rate value is greater than a first preset value; S3. If so, the number of abnormal occurrences will be increased by 1, and the inlet valve will be controlled to perform the on / off operation a preset number of times at a preset frequency. S4. Determine whether the number of abnormal occurrences is greater than a second preset value; S5. If so, the inlet valve is determined to be faulty; S6. If not, proceed to step S1; Step S3 also includes: When the flow rate is greater than the first set value, the number of abnormalities is increased by 1. Furthermore, based on the current accumulated number of abnormalities, the current preset number of times the inlet valve is turned on and off is determined from the pre-stored correspondence table between the number of abnormalities and the preset number of times the inlet valve is turned on and off at a preset frequency. The inlet valve is then controlled to perform the current preset number of on / off operations at a preset frequency.

2. The method for detecting and handling leakage in the inlet valve according to claim 1, characterized in that, Step S5 includes: When the number of abnormal occurrences exceeds the second set value, the inlet valve is determined to be faulty, an alarm is triggered, and drainage is initiated.

3. The method for detecting and handling leakage in the inlet valve according to claim 2, characterized in that, Step S5 includes: S501. When the number of abnormal occurrences exceeds the second preset value, the inlet valve is determined to be faulty, an alarm is triggered, and drainage is initiated for a second preset duration. S502. Detect the current flow rate value of the inlet valve; S503. Determine whether the current flow rate value is greater than the third preset value; S504. If so, then start the third preset drainage time.

4. The method for detecting and handling leakage in the inlet valve according to claim 1, characterized in that, Step S6 includes: When the number of abnormal occurrences is less than or equal to the second set value, the detection of the flow rate value is paused for a first preset duration, and then the process proceeds to step S1.

5. The method for detecting and handling leakage in the inlet valve according to claim 1, characterized in that, The step of controlling the inlet valve to perform on / off operations a preset number of times at a preset frequency includes: The inlet valve is controlled by a countdown timer to complete a preset number of on / off operations at a preset frequency.

6. The method for detecting and handling leakage in the inlet valve according to claim 1, characterized in that, The method also includes: S0. Determine if the inlet valve is not working properly; if so, proceed to step S1.

7. A dishwasher, comprising a water inlet valve, characterized in that, It also includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the steps of the inlet valve leakage detection and processing method as described in any one of claims 1 to 6 by calling the computer program stored in the memory.

8. The dishwasher according to claim 7, characterized in that, The dishwasher also includes a flow meter, which is used to acquire the flow rate value of the water inlet valve and transmit it to the processor for processing; or The dishwasher also includes a water level sensor, which is used to obtain the flow rate value of the water inlet valve and transmit it to the processor for processing.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program adapted for loading by a processor to perform the steps of the inlet valve leakage detection and processing method as described in any one of claims 1 to 6.

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