Fault repair method for drying equipment, controller and drying equipment

Abstract

The present application relates to the field of drying equipment, and more specifically, to a method for repairing a fault in a drying equipment, a controller, and the drying equipment. The method comprises obtaining liquid level data collected by the liquid level detector; and controlling the drainage pump to operate according to a preset first start-stop parameter or a second start-stop parameter based on the difference between the liquid level data and a preset first liquid level threshold value, wherein the first start-stop parameter is a commonly used parameter, the second start-stop parameter is a parameter used for fault repair, and the stop time in the second start-stop parameter is greater than the stop time in the first start-stop parameter. Since the stop time in the second start parameter is greater than the stop time in the first start-stop parameter, a larger amount of water can be accumulated in the drying equipment, so that the drainage pump can squeeze out the trapped air due to the larger amount of water discharged, thereby repairing the fault of poor drainage.

Description

Technical Field

[0001] The present application relates to the field of drying equipment, and in particular to a fault repair method, a controller and drying equipment for drying equipment. Background Art

[0002] As the user base of drying equipment continues to grow, demand for drying appliances such as clothes dryers is increasing. Top-drain drying appliances are more popular among users due to their flexible installation locations. Top-drain drying appliances are characterized by the use of a drain pump for drainage. However, most existing top-drain drying appliances suffer from the drawback that the drain pump is not located at the lowest point of the entire machine's liquid level, leading to inaccurate liquid level detection and poor drainage during the drying process. Summary of the Invention

[0003] The present application provides a drying equipment fault repair method, a controller and a drying equipment, so as to at least solve the technical problems of inaccurate liquid level detection and unsmooth drainage that occur during the drying process.

[0004] According to a first aspect of an embodiment of the present application, a method for repairing a fault in a drying device is provided. The method is applied to the drying device, wherein the drying device includes a processing drum, a drainage pump, and a liquid level detector. The drainage port of the processing drum is connected to the drainage pump via a drainage pipe. The liquid level detector is connected to the drainage pipe to detect the liquid level using the principle of a communicating vessel. The method includes:

[0005] Acquiring liquid level data collected by the liquid level detector;

[0006] According to the difference between the liquid level data and the preset first liquid level threshold, the drainage pump is controlled to operate according to the preset first start-stop parameter or the second start-stop parameter, wherein the first start-stop parameter is a commonly used parameter, and the second start-stop parameter is a parameter used for fault repair, and the stop time in the second start-stop parameter is greater than the stop time in the first start-stop parameter.

[0007] Optionally, controlling the drainage pump to operate according to a preset first start-stop parameter or a preset second start-stop parameter based on the difference between the liquid level data and a preset first liquid level threshold value includes:

[0008] When the liquid level data is less than or equal to the first liquid level threshold within a preset first time threshold, controlling the drainage pump to operate according to the second start-stop parameter;

[0009] When the liquid level data is greater than the first liquid level threshold within the first time threshold, controlling the drainage pump to operate according to the first start-stop parameter;

[0010] The smaller the value of the liquid level data is, the higher the liquid level is.

[0011] Optionally, the start time in the second start-stop parameter is less than the stop time in the second start-stop parameter.

[0012] Optionally, before controlling the drainage pump to operate according to the preset first start-stop parameter or the second start-stop parameter based on the difference between the liquid level data and the preset first liquid level threshold, the method further includes:

[0013] Determining whether the liquid level data is always less than or equal to a preset second liquid level threshold within a preset second time threshold, wherein a smaller value of the liquid level data indicates a higher liquid level;

[0014] If the liquid level data is always less than or equal to the second liquid level threshold, a drainage procedure is entered, wherein the drainage procedure includes controlling the drainage pump to turn on, and when the liquid level data is lower than a preset third liquid level threshold, controlling the drainage pump to remain in the on state for a preset third time threshold and then turn off the drainage pump;

[0015] If the liquid level data is always greater than the second liquid level threshold, the size of the liquid level data and the first liquid level threshold is determined.

[0016] Optionally, the drainage procedure further includes:

[0017] When the drain pump is controlled to be turned on and the liquid level data is lower than a preset third liquid level threshold, the drain pump is controlled to remain in the turned-on state for a preset third time threshold and then turned off, the number of drainages is accumulated to obtain a total number of drainages, and when the total number of drainages exceeds a preset first cycle threshold, a fault message is output, and when the total number of drainages does not exceed the first cycle threshold, the liquid level data collected by the liquid level detector is obtained again.

[0018] Optionally, after controlling the drainage pump to operate according to a preset second start / stop parameter based on the difference between the liquid level data and a preset first liquid level threshold, the method further includes:

[0019] Determine whether the duration during which the liquid level data is always less than or equal to the first liquid level threshold reaches a preset fifth time threshold within the duration of the preset fourth time threshold;

[0020] If yes, the number of faults is accumulated to obtain the total number of faults. When the total number of faults exceeds a preset second cycle threshold, the drainage program is entered. When the total number of faults does not exceed the second cycle threshold, the drainage pump is controlled to operate according to the first start-stop parameter.

[0021] If not, the drainage pump is controlled to operate according to the first start-stop parameter.

[0022] Optionally, the fourth time threshold is the duration of a start-stop cycle in the first start-stop parameter, and the fifth time threshold is greater than the stop time in the rotation-stop ratio parameter of the processing bucket.

[0023] According to a second aspect of an embodiment of the present application, a controller is provided, comprising a memory and a processor, wherein the memory stores a computer program, and the processor adopts the above-mentioned fault repair method for the drying equipment when executing the computer program in the memory.

[0024] According to a third aspect of an embodiment of the present application, a drying device is provided, comprising a treatment barrel, a drainage pump, and a liquid level detector. The drainage port of the treatment barrel is connected to the drainage pump via a drainage pipe. The liquid level detector is connected to the drainage pipe to detect the liquid level using the principle of a communicating vessel. The water outlet of the drainage pump is connected to a water outlet pipe that first rises and then falls. The water outlet pipe is used to discharge water in the drainage pump outside the drying device.

[0025] The drying device includes the controller described above or adopts the fault repair method of the drying device described above.

[0026] Optionally, the drying device is a clothes dryer or a washer-dryer.

[0027] In the embodiment of the present application, since the drainage pump is not the lowest point of the liquid level in the drying equipment, trapped air is easily generated at the water outlet of the drainage pump. The trapped air blocks the drainage of the drainage pump, resulting in poor drainage or inability to drain. At this time, the drainage pump is controlled to operate according to the second start-stop parameter. Since the stop time in the second start parameter is greater than the stop time in the first start-stop parameter, a larger amount of water can be accumulated in the drying equipment, so that the drainage pump can squeeze out the trapped air due to the large amount of water discharged, thereby repairing the problem of poor drainage.

[0028] At the same time, because the drain pump is not the lowest point of the liquid level in the drying equipment, some water is likely to remain in the drain pipe and cannot be discharged. When the treatment barrel rotates, the water remaining in the drain pipe is affected by the rotation of the treatment barrel, so that the high-pressure air in the treatment barrel cannot contact the liquid level detector. When the treatment barrel does not rotate, the high-pressure air in the treatment barrel is not blocked by the water in the drain pipe and contacts the liquid level detector, causing the liquid level data collected by the liquid level detector to be too high, resulting in an inaccurate detection fault. At this time, the drain pump is controlled to operate according to the second start-stop parameter, so that the drain pump is in a stopped state for a longer time, and more water remains in the drain pipe to block the air flow channel between the treatment barrel and the liquid level detector, so that the liquid level data is not affected by the high-pressure air in the treatment barrel, thereby fixing the inaccurate liquid level detection fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 FIG. 1 is a schematic diagram of the trapped gas position in an embodiment.

[0030] Figure 2 It is the position of water accumulation in the drain pipe when the inner drum stops rotating in one embodiment.

[0031] Figure 3 It is the position of water accumulation in the drain pipe when the inner drum rotates in one embodiment.

[0032] Figure 4 The present invention is a flowchart of a method for repairing a drying device fault in an embodiment.

[0033] Figure 5 The present invention is an overall flow chart of a method for repairing a drying device fault in an embodiment.

[0034] Explanation of the numbers: 1. Outer cylinder; 2. Drain pipe; 3. Liquid level chamber; 4. Drain pump; 41. Water inlet end; 42. Water outlet end; 5. First section; 6. Second section; 7. Third section; 8. Drain pipe clamp. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] According to an embodiment of the present application, an embodiment of a fault repair method for a drying device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0038] In one embodiment, the fault repair method of the drying equipment of this embodiment is applied to Figure 1-3 The drying equipment shown in the figure includes a processing barrel, a drainage pump 4 and a liquid level detector. The drain outlet of the processing barrel is connected to the drainage pump 4 through a drainage pipe 2. The liquid level detector is connected to the drainage pipe 2 to detect the liquid level using the principle of a communicating vessel. The water outlet end 42 of the drainage pump 4 is connected to a water outlet pipe that first rises and then lowers. The water outlet pipe is used to discharge the water in the drainage pump 4 to the outside of the drying equipment.

[0039] Specifically, the processing barrel includes an inner drum and an outer drum 1, with the inner drum rotating inside the outer drum 1 and driven by a driver. During the drying process, condensed water enters the drying equipment to condense the drying airflow. At the same time, the water condensed from the drying airflow will also accumulate in the drying equipment. Therefore, condensed water and water condensed from the drying airflow will accumulate in the outer drum 1. This water needs to be discharged from the drying equipment by a drain pump 4 to avoid the presence of a large amount of water in the drying equipment, which reduces the drying efficiency. The drain outlet is located at the bottom of the outer drum 1. One end of the drain pipe 2 is connected to the drain outlet and is horizontally arranged. The other end of the drain pipe 2 is connected to the water inlet of the drain pump 4. The liquid level detector is located in the liquid level chamber 3, which is connected to the upper part of the horizontal end of the drain pipe 2. The detection principle of the liquid level detector is that it is connected to the outer drum 1 through a communication vessel. The liquid level detector detects the pressure value in the communication vessel to determine the liquid level height in the outer drum 1.

[0040] The outlet pipe connected to the outlet end 42 of the drain pump 4 includes a vertically arranged first section 5, a downwardly inclined second section 6, and an upwardly inclined third section 7. The highest point of the first section 5 is connected to the highest point of the second section 6, and the lowest point of the second section 6 is connected to the lowest point of the third section 7. A drain pipe clamp 2 is provided at the connection between the second section 6 and the third section 7. The connection between the first section 5 and the second section 6 is a location where air is easily trapped.

[0041] Among them, during the drying process of the washer-dryer with water condensation, the drain pump 4 needs to be turned on from time to time to discharge the condensed water (for heat exchange with the hot and humid air) and the condensed water. When there is air in the drain pump 4, bubbles will float to the position where air is easily trapped. When the bubbles accumulate to a certain extent, the water cannot be discharged.

[0042] like Figure 4 As shown, the method includes the following steps:

[0043] S101. Acquire liquid level data collected by the liquid level detector.

[0044] In one embodiment, a communicating vessel is provided on the drain pipe 2, which contains a liquid level chamber 3. A liquid level detector is located in the liquid level chamber 3, which is in communication with the drain pipe 2. One end of the drain pipe 2 is in communication with the outer cylinder 1, and the other end is in communication with the drain pump 4. When water accumulates in the outer cylinder 1, the accumulated water, based on the communicating vessel principle, enters the liquid level chamber 3 and squeezes the air within the chamber 3, causing the pressure within the chamber 3 to change, and thus the pressure value detected by the liquid level detector to change. The liquid level in the outer cylinder 1 is then converted from the pressure value detected by the liquid level detector. The conversion process is not limited in this embodiment. To simplify the calculation process, a relationship curve between the pressure value x of the liquid level detector and the liquid level y in the outer cylinder 1 can be obtained through experimentation. Then, the actual pressure value x detected can be converted to the corresponding value y from the relationship curve to determine the actual water level in the outer cylinder 1. Specifically, the liquid level data can be the pressure value detected by the liquid level detector or the converted liquid level value.

[0045] S102 : Control the drainage pump 4 to operate according to the preset first start / stop parameter or the preset second start / stop parameter based on the difference between the liquid level data and the preset first liquid level threshold.

[0046] The first start-stop parameter is a commonly used parameter, the second start-stop parameter is a parameter used during fault repair, and the stop time in the second start-stop parameter is greater than the stop time in the first start-stop parameter.

[0047] It should be noted that because the drain pump 4 is not at the lowest liquid level of the drying equipment, some water easily accumulates in the drain pipe 2 and cannot be discharged. As a result, in the last few seconds of each drainage cycle, the water entering the drain pump 4 cannot fill the outlet pipe. The outlet pipe is partly water and partly air, which in turn causes some air to accumulate at the connection between the first section 5 and the second section 6 of the outlet pipe, forming trapped air. At the same time, because the drain pipe 2 has a horizontal section, when the inner drum is rotating or not rotating, the high-pressure air in the inner drum and the accumulated water in the drain pipe 2 enter the communicating vessel, causing deviations in the liquid level detector.

[0048] In order to solve the above problem, the liquid level data collected by the liquid level detector is first obtained. At this time, regardless of whether the liquid level data is accurate, the size between the liquid level data and the first liquid level threshold is judged to obtain the size. If the liquid level data is less than the first liquid level threshold, it proves that there is more water in the treatment barrel. If the liquid level data is greater than the first liquid level threshold, it proves that there is less water in the treatment barrel. When there is more water, the drainage pump 4 can be controlled to operate according to the second start-stop parameter, so that the time the drainage pump 4 is in the stopped state is prolonged, and there is more water in the treatment barrel, which causes the water in the drain pipe 2 to increase, and the high-pressure air in the treatment barrel is not easy to enter the liquid level cavity 3, solving the problem of inaccurate liquid level detection. At the same time, the water in the drain pipe 2 increases, so that the drainage pump 4 can inhale a large amount of water when it is turned on. The accumulated water squeezes the trapped air and discharges the trapped air, solving the problem of poor drainage caused by trapped air and achieving the purpose of automatically correcting the fault.

[0049] Through the above steps, since the drain pump 4 is not the lowest point of the liquid level in the drying equipment, trapped air is easily generated at the water outlet 42 of the drain pump 4. The trapped air blocks the drainage of the drain pump 4, resulting in poor drainage or inability to drain. At this time, the drain pump 4 is controlled to operate according to the second start-stop parameter. Since the stop time in the second start parameter is greater than the stop time in the first start-stop parameter, a larger amount of water can be accumulated in the drying equipment, so that the drain pump 4 can squeeze out the trapped air due to the large amount of water discharged, thereby repairing the problem of poor drainage.

[0050] At the same time, because the drain pump 4 is not the lowest point of the liquid level in the drying equipment, some water is likely to remain in the drain pipe 2 and cannot be discharged. When the treatment barrel rotates, the water remaining in the drain pipe 2 is affected by the rotation of the treatment barrel, so that the high-pressure air in the treatment barrel cannot contact the liquid level detector. When the treatment barrel does not rotate, the high-pressure air in the treatment barrel is not blocked by the water in the drain pipe 2 and contacts the liquid level detector, causing the liquid level data collected by the liquid level detector to be too high, resulting in an inaccurate detection fault. At this time, the drain pump 4 is controlled to operate according to the second start-stop parameter, so that the drain pump 4 is in a stopped state for a longer time, and more water remains in the drain pipe 2 to block the air flow channel between the treatment barrel and the liquid level detector, so that the liquid level data is not affected by the high-pressure air in the treatment barrel, thereby fixing the inaccurate liquid level detection fault.

[0051] In another embodiment of the present application, controlling the drainage pump 4 to operate according to the preset first start-stop parameter or the second start-stop parameter based on the difference between the liquid level data and the preset first liquid level threshold value includes:

[0052] When the liquid level data is less than or equal to the first liquid level threshold within a preset first time threshold, controlling the drainage pump 4 to operate according to the second start-stop parameter;

[0053] When the liquid level data is greater than the first liquid level threshold within the first time threshold, controlling the drainage pump 4 to operate according to the first start-stop parameter;

[0054] The smaller the value of the liquid level data is, the higher the liquid level is.

[0055] In one embodiment, since the smaller the value of the liquid level data, the higher the liquid level, when the liquid level data is less than or equal to the first liquid level threshold, it proves that the value of the liquid level data is small, thereby proving that the liquid level in the treatment barrel is high. At this time, there are two possibilities. One is that the liquid level data that appears due to inaccurate detection by the liquid level detector reflects that the liquid level in the treatment barrel is high. The other is that the liquid level in the treatment barrel is high due to the presence of trapped air, which causes poor drainage. Regardless of which possibility is true, the drainage pump 4 is controlled to operate according to the second start-stop parameter to facilitate the accumulation of a large amount of accumulated water in the drain pipe 2, so that the high-pressure air in the treatment barrel is not easy to enter the liquid level chamber 3, thereby ensuring the accuracy of the liquid level detector detection and facilitating the discharge of trapped air to ensure the subsequent smooth drainage.

[0056] If the liquid level data is greater than the first liquid level threshold, it proves that the value of the liquid level data is large, and therefore proves that the liquid level in the processing barrel is low. At this time, the drainage pump 4 is controlled according to the first start and stop parameters to ensure that the drainage pump 4 discharges the accumulated water in time and ensures the drying efficiency.

[0057] In one embodiment, the first liquid level threshold is a safe water level for weighing of the drying equipment. At this water level, the processing barrel can be weighed without being affected.

[0058] Through the above steps, it is convenient to change the drainage rhythm of the drainage pump 4 when the liquid level is high, thereby solving the air entrapment fault and the inaccurate water level detection fault, and automatically repairing the fault.

[0059] In another embodiment of the present application, the start time in the second start-stop parameter is less than the stop time in the second start-stop parameter.

[0060] Through the above steps, the start time is shorter than the stop time, which is conducive to the accumulation of more water in the drain pipe 2, thereby solving the problems of trapped air and inaccurate water level detection.

[0061] In another embodiment of the present application, before controlling the drainage pump 4 to operate according to the preset first start-stop parameter or the second start-stop parameter based on the difference between the liquid level data and the preset first liquid level threshold, the method further includes:

[0062] Determining whether the liquid level data is always less than or equal to a preset second liquid level threshold within a preset second time threshold, wherein a smaller value of the liquid level data indicates a higher liquid level;

[0063] If the liquid level data is always less than or equal to the second liquid level threshold, a drainage procedure is entered, wherein the drainage procedure includes controlling the drainage pump 4 to turn on, and when the liquid level data is lower than a preset third liquid level threshold, controlling the drainage pump 4 to remain in the on state for a preset third time threshold and then turn off the drainage pump 4;

[0064] If the liquid level data is always greater than the second liquid level threshold, the size of the liquid level data and the first liquid level threshold is determined.

[0065] like Figure 5 As shown, in one embodiment, the second liquid level threshold EL8 is the door opening water level. When the water level in the treatment barrel reaches the door opening water level, it is considered that the door cannot be opened, otherwise water will flow out of the door. Therefore, the first liquid level threshold EL1 is less than EL8.

[0066] The third liquid level threshold EL0 is an empty bucket water level, wherein the empty bucket water level refers to a water level when there is no water in the outer tube 1 .

[0067] The first time threshold is t1, the second time threshold is the same as the first time threshold, both are t1, the third time threshold is t6, the fourth time threshold is t4, and the fifth time threshold is t5. The third time threshold t6 is preferably 10 seconds.

[0068] For ease of understanding, after the drying equipment is started, the water level is first judged. If the water level in the processing barrel is too high, the drainage procedure is first executed to drain the accumulated water in the processing barrel.

[0069] Through the above steps, the accumulated water in the treatment barrel is discharged, which is not likely to affect the subsequent water level detection and the discharge of trapped air, thereby ensuring the repair effect of the fault.

[0070] In another embodiment of the present application, the drainage procedure further includes:

[0071] When the drain pump 4 is controlled to be turned on and the liquid level data is lower than the preset third liquid level threshold, the drain pump 4 is controlled to remain in the turned-on state for the preset third time threshold and then turned off, the number of drainages is accumulated to obtain the total number of drainages, and when the total number of drainages exceeds the preset first cycle threshold, a fault message is output, and when the total number of drainages does not exceed the first cycle threshold, the liquid level data collected by the liquid level detector is obtained again.

[0072] like Figure 5 As shown, the total number of drainage times K is initially 0, and each time the drainage process is executed, the total number of drainage times increases by 1. When the total number of drainage times K exceeds the first cycle threshold N, it proves that the water cannot be drained. At this time, an alarm is issued indicating that there is a drying water level failure, and fault information is output to facilitate timely repair.

[0073] The above steps are helpful for timely discovery of faults that cannot be automatically repaired, thereby outputting fault information, so that the faults in the drying equipment can be discovered and repaired in a timely manner.

[0074] In another embodiment of the present application, after controlling the drainage pump 4 to operate according to a preset second start-stop parameter based on the difference between the liquid level data and the preset first liquid level threshold, the method further includes:

[0075] Determine whether the duration during which the liquid level data is always less than or equal to the first liquid level threshold reaches a preset fifth time threshold within the duration of the preset fourth time threshold;

[0076] If yes, the number of faults is accumulated to obtain the total number of faults. When the total number of faults exceeds a preset second cycle threshold, the drainage program is entered. When the total number of faults does not exceed the second cycle threshold, the drainage pump 4 is controlled to operate according to the first start-stop parameter.

[0077] If not, the drainage pump 4 is controlled to operate according to the first start-stop parameter.

[0078] In one embodiment, after controlling the drain pump 4 to operate according to the second start-stop parameter, the drainage rhythm of the drain pump 4 is changed, so that the trapped air is discharged and the water level detection fault is repaired. Then, the size relationship between the liquid level data detected at this time and the first liquid level threshold is judged again to determine whether the fault is successfully repaired. If the liquid level data detected at this time is still less than the first liquid level threshold, it proves that the water level in the treatment barrel is still high, thereby proving that the drainage is not smooth, and then enters the drainage program, and continuously starts the drain pump 4 to drain. If the liquid level data detected at this time exceeds the first liquid level threshold, it proves that the water level in the treatment barrel is low, thereby proving that the drainage is smooth. Controlling the drain pump 4 to operate according to the first start-stop parameter is helpful to drain the accumulated water in time after the fault is repaired, and it is not easy to affect the drying efficiency.

[0079] Through the above steps, after the fault is automatically repaired, the repair status is automatically determined to ensure the quality of the fault repair.

[0080] In another embodiment of the present application, the fourth time threshold is the duration of a start-stop cycle in the first start-stop parameter, and the fifth time threshold is greater than the stop time in the rotation-stop ratio parameter of the processing barrel.

[0081] In one embodiment, the first start-stop parameter includes a start time and a stop time. For example, if the start time is 12 seconds and the stop time is 3 seconds, then after each start of the drain pump 4 reaches 12 seconds, the drain pump 4 stops for 3 seconds, completing a start-stop cycle. The drain pump 4 then starts again for 12 seconds and stops for 3 seconds, repeating the cycle. At this point, the start-stop cycle of the drain pump 4 is 12+3=15 seconds, and the fourth time threshold is 15 seconds. The treatment barrel has a rotation-stop ratio parameter, which includes a single rotation time and a single stop time of the treatment barrel; for example, if the treatment barrel rotates for 20 seconds and stops for 5 seconds, the rotation time is 20 seconds and the stop time is 5 seconds. The fifth time threshold should be greater than 5 seconds, but not exceed the fourth time threshold.

[0082] Through the above content, since the fifth time threshold is less than the fourth time threshold, it is helpful to judge whether the liquid level data detected within the fifth time threshold duration is less than or equal to the first liquid level threshold within a start-stop cycle of the drainage pump 4, so that the detection duration will not span the two start-stop cycles of the drainage pump 4, thereby improving the accuracy of the judgment result.

[0083] An embodiment of the present application further provides a controller including a memory and a processor, wherein the memory stores a computer program, and the processor adopts the above-mentioned fault repair method for the drying equipment when executing the computer program in the memory.

[0084] An embodiment of the present application further provides a drying device, including the controller described above or a fault repair method using the drying device described above.

[0085] In another embodiment of the present application, the drying device is a clothes dryer or a washer-dryer.

[0086] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0087] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0088] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0089] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0090] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0091] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0092] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for repairing a drying device fault, characterized in that: The method is applied to a drying device, the drying device comprising a processing barrel, a drainage pump (4) and a liquid level detector, the drainage port of the processing barrel being connected to the drainage pump (4) via a drainage pipe (2), the liquid level detector being connected to the drainage pipe (2) to detect the liquid level using the communicating vessel principle, and the method comprising: Acquiring liquid level data collected by the liquid level detector; According to the difference between the liquid level data and a preset first liquid level threshold, the drainage pump (4) is controlled to operate according to a preset first start-stop parameter or a second start-stop parameter, wherein the first start-stop parameter is a commonly used parameter, the second start-stop parameter is a parameter used during fault repair, and the stop time in the second start-stop parameter is greater than the stop time in the first start-stop parameter; The method of controlling the drainage pump (4) to operate according to a preset first start-stop parameter or a preset second start-stop parameter based on the difference between the liquid level data and a preset first liquid level threshold value comprises: When the liquid level data is less than or equal to the first liquid level threshold value within a preset first time threshold value, controlling the drainage pump (4) to operate according to the second start-stop parameter; When the liquid level data is greater than the first liquid level threshold value within the duration of the first time threshold value, controlling the drainage pump (4) to operate according to the first start-stop parameter; The smaller the value of the liquid level data is, the higher the liquid level is.

2. The method for repairing a drying device according to claim 1, characterized in that: The start time in the second start-stop parameter is less than the stop time in the second start-stop parameter.

3. The drying equipment fault repair method according to claim 1, characterized in that: Before controlling the drainage pump (4) to operate according to the preset first start-stop parameter or the second start-stop parameter based on the difference between the liquid level data and the preset first liquid level threshold, the method further comprises: Determining whether the liquid level data is always less than or equal to a preset second liquid level threshold within a preset second time threshold, wherein a smaller value of the liquid level data indicates a higher liquid level; If the liquid level data is always less than or equal to the second liquid level threshold, a drainage procedure is entered, wherein the drainage procedure includes controlling the drainage pump (4) to be turned on, and when the liquid level data is lower than a preset third liquid level threshold, controlling the drainage pump (4) to remain in the on state for a preset third time threshold and then turning off the drainage pump (4); If the liquid level data is always greater than the second liquid level threshold, the size of the liquid level data and the first liquid level threshold is determined.

4. The drying equipment fault repair method according to claim 3, characterized in that: The drainage procedure also includes: When the drain pump (4) is controlled to be turned on and the liquid level data is lower than a preset third liquid level threshold, the drain pump (4) is controlled to remain in the turned-on state for a preset third time threshold and then turned off, the number of drainages is accumulated to obtain a total number of drainages, and when the total number of drainages exceeds a preset first cycle threshold, fault information is output, and when the total number of drainages does not exceed the first cycle threshold, the liquid level data collected by the liquid level detector is reacquired.

5. The method for repairing a drying device fault according to claim 3, characterized in that: After controlling the drainage pump (4) to operate according to a preset second start / stop parameter based on the difference between the liquid level data and a preset first liquid level threshold, the method further comprises: Determine whether the duration during which the liquid level data is always less than or equal to the first liquid level threshold reaches a preset fifth time threshold within the duration of the preset fourth time threshold; If so, the number of failures is accumulated to obtain the total number of failures. When the total number of failures exceeds a preset second cycle threshold, the drainage program is entered. When the total number of failures does not exceed the second cycle threshold, the drainage pump (4) is controlled to operate according to the first start-stop parameter. If not, the drainage pump (4) is controlled to operate according to the first start-stop parameter.

6. The method for repairing a drying device failure according to claim 5, characterized in that: The fourth time threshold is the duration of a start-stop cycle in the first start-stop parameter, and the fifth time threshold is greater than the stop time in the rotation-stop ratio parameter of the processing bucket.

7. A controller, characterized in that: The device comprises a memory and a processor, wherein the memory stores a computer program, and the processor adopts the fault repair method of the drying equipment according to any one of claims 1 to 6 when executing the computer program in the memory.

8. A drying device, characterized in that: The invention comprises a treatment barrel, a drainage pump (4) and a liquid level detector, wherein the drainage port of the treatment barrel is connected to the drainage pump (4) via a drainage pipe (2), the liquid level detector is connected to the drainage pipe (2) to detect the liquid level using the communicating vessel principle, and the water outlet (42) of the drainage pump (4) is connected to a water outlet pipe that first rises and then falls, and the water outlet pipe is used to discharge the water in the drainage pump (4) to the outside of the drying equipment; The drying device includes the controller according to claim 7 or adopts the fault repair method of the drying device according to any one of claims 1 to 6.

9. The drying device according to claim 8, characterized in that: The drying equipment is a clothes dryer or a washer-dryer.

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