A method and device for detecting water quantity of a dishwasher, the dishwasher, and a storage medium

Abstract

The application provides a water quantity detection method and device of a dishwasher, the dishwasher and a storage medium, and the method comprises the following steps: obtaining a real-time temperature value of washing water in the dishwasher after the dishwasher starts a heating washing function; determining a heating duration of the washing water at a time when the real-time temperature value is obtained, obtaining a temperature threshold range corresponding to the heating duration, the minimum value of the temperature threshold range being a temperature value of the washing water after the heating duration when the washing water in the dishwasher is at a maximum water quantity, and the maximum value of the temperature threshold range being a temperature value of the washing water after the heating duration when the washing water in the dishwasher is at a minimum water quantity; judging whether the real-time temperature value is in the temperature threshold range; and if the real-time temperature value is not in the temperature threshold range, determining that the water quantity of the dishwasher is abnormal. The application can reduce the use of dishwasher parts, and achieves the effect of realizing real-time water quantity detection without increasing the complexity of the structure of the dishwasher.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to a water level detection method and device for a dishwasher, a dishwasher, and a storage medium. Background Technology

[0002] To prevent insufficient water level in the drum during the heating cycle, which could cause the heating element to burn out and potentially damage or shorten its lifespan, existing dishwashers typically have a water level pressure switch at the bottom to monitor the water level in the drum. Fluctuations in the water level can occur for two main reasons: first, incorrect placement of dishes can cause water sprayed during the wash cycle to accumulate on the dishes, preventing it from flowing back into the drum and resulting in insufficient water during the heating cycle, potentially leading to the heating element burning out; second, a malfunctioning flow meter can cause a significant discrepancy between the actual and measured water intake.

[0003] The water level pressure switch primarily determines whether the water level meets the preset level for the dishwasher's heating and washing functions by detecting the pressure generated when water accumulates in the water cup. When the water level at the bottom of the dishwasher's inner tub drops to a lower limit, the water level pressure switch activates to disconnect the heating element, preventing it from drying out and issuing a warning. However, the use of a water level pressure switch increases the number of internal parts in the dishwasher, making the base water cup structure more complex. Furthermore, the need for assembly and fixing the water level pressure switch leads to numerous assembly steps, which is detrimental to production and application. Summary of the Invention

[0004] This invention proposes a method and device for detecting water level in a dishwasher, a dishwasher, and a storage medium, in order to solve the technical problem that using a water level pressure switch to detect water level in the dishwasher inner tank increases the complexity of the internal structure of the dishwasher and leads to complicated assembly.

[0005] In one aspect, the present invention provides a method for detecting the water level in a dishwasher, the method comprising:

[0006] After the dishwasher turns on the heated washing function, obtain the real-time temperature value of the washing water inside the dishwasher;

[0007] The heating time of the washing water at the moment the real-time temperature value is obtained is determined, and the temperature threshold range corresponding to the heating time is obtained. The minimum value of the temperature threshold range is the temperature value of the washing water after the heating time when the washing water in the dishwasher is at the highest water level, and the maximum value of the temperature threshold range is the temperature value of the washing water after the heating time when the washing water in the dishwasher is at the lowest water level.

[0008] Determine whether the real-time temperature value is within the temperature threshold range;

[0009] If the real-time temperature value is not within the temperature threshold range, the water volume of the dishwasher is determined to be abnormal.

[0010] Further, determining the heating time of the washing water at the moment the real-time temperature value is acquired, and obtaining the temperature threshold range corresponding to the heating time, includes:

[0011] Obtain the high water volume temperature change curve corresponding to the highest water volume in the dishwasher and the low water volume temperature change curve corresponding to the lowest water volume in the dishwasher. The initial temperature corresponding to the high water volume temperature change curve and the low water volume temperature change curve is the same as the initial temperature of the washing water in the dishwasher.

[0012] Extract the high water volume temperature value and low water volume temperature value corresponding to the current heating time from the high water volume temperature change curve and the low water volume temperature change curve;

[0013] The high water volume temperature value is taken as the minimum value of the temperature threshold range, and the low water volume temperature value is taken as the maximum value of the temperature threshold range, to obtain the temperature threshold range corresponding to the current heating time.

[0014] Furthermore, if the real-time temperature value is not within the temperature threshold range, the water volume of the dishwasher is determined to be abnormal, specifically including:

[0015] If the real-time temperature value is greater than the maximum value of the temperature threshold range, it is determined that the dishwasher is in a water shortage state.

[0016] If the real-time temperature value is less than the minimum value of the temperature threshold range, it is determined that the dishwasher is in an overflow state.

[0017] Furthermore, the method also includes:

[0018] When the dishwasher is found to be low on water, a water shortage warning will be issued, and the heating and washing functions will be stopped or the water replenishment function will be activated.

[0019] When the dishwasher detects that the water level is overflowing, it will issue an overflow warning and stop the heating and washing function or start the drainage function.

[0020] Furthermore, the method also includes:

[0021] When the obtained real-time temperature value is greater than or equal to the highest set temperature value corresponding to the heating and washing function, the water volume detection operation is stopped.

[0022] Furthermore, the method also includes:

[0023] When the dishwasher turns on the heated washing function, obtain the initial temperature value of the washing water inside the dishwasher;

[0024] Based on the initial temperature value, a set of temperature threshold ranges corresponding to the initial temperature value is obtained, and the set of temperature threshold ranges includes temperature threshold ranges corresponding to different heating durations.

[0025] In another aspect, the present invention provides a water level detection device for a dishwasher, the device comprising:

[0026] The first acquisition module is used to acquire the real-time temperature value of the washing water in the dishwasher after the dishwasher turns on the heating washing function;

[0027] The second acquisition module is used to determine the heating time of the washing water at the time of the real-time temperature value acquisition, and to acquire a first temperature threshold range corresponding to the heating time. The minimum value of the first temperature threshold range is the temperature value of the washing water after the heating time when the washing water in the dishwasher is at its highest water level, and the maximum value of the first temperature threshold range is the temperature value of the washing water after the heating time when the washing water in the dishwasher is at its lowest water level.

[0028] The judgment module is used to determine whether the real-time temperature value is within the first temperature threshold range. If the real-time temperature value is not within the first temperature threshold range, the judgment module determines that the water volume of the dishwasher is abnormal.

[0029] Further, the second acquisition module is used to acquire the high water volume temperature change curve corresponding to the highest water volume in the dishwasher and the low water volume temperature change curve corresponding to the lowest water volume in the dishwasher. The initial temperature corresponding to the high water volume temperature change curve and the low water volume temperature change curve is the same as the initial temperature of the washing water in the dishwasher. The high water volume temperature change curve and the low water volume temperature change curve are intercepted to obtain the high water volume temperature value and the low water volume temperature value corresponding to the current heating time. The high water volume temperature value is taken as the minimum value of the temperature threshold range, and the low water volume temperature value is taken as the maximum value of the temperature threshold range, so as to obtain the temperature threshold range corresponding to the current heating time.

[0030] Furthermore, the judgment module is also used to determine that the dishwasher is in a water shortage state when the real-time temperature value is greater than the maximum value of the temperature threshold range;

[0031] When the real-time temperature value is less than the minimum value of the temperature threshold range, it is determined that the dishwasher is in an overflow state.

[0032] In another aspect, the present invention provides a dishwasher, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the water level detection method for the dishwasher as described above.

[0033] Furthermore, the dishwasher also includes:

[0034] A temperature sensor, installed on the water cup inside the dishwasher, is used to detect the real-time temperature of the washing water inside the dishwasher after the dishwasher turns on the heating washing function, so as to detect the real-time water volume.

[0035] Furthermore, the present invention also proposes a computer-readable storage medium having a computer program stored thereon, characterized in that the computer program, when executed by a processor, implements the steps of the water level detection method for a dishwasher as described above.

[0036] This invention discloses a water level detection method and device for a dishwasher, a dishwasher, and a storage medium. After the dishwasher's heating and washing function is activated, the real-time temperature of the washing water inside the dishwasher is acquired, and the heating time of the washing water at the moment the real-time temperature is acquired is determined. A temperature threshold range corresponding to the heating time is obtained. The minimum value of the temperature threshold range is the temperature of the washing water after the heating time when the washing water in the dishwasher is at its highest water level, and the maximum value is the temperature of the washing water after the heating time when the washing water in the dishwasher is at its lowest water level. By determining whether the real-time temperature value is within the aforementioned temperature threshold range, if the real-time temperature value is not within the temperature threshold range, the water level of the dishwasher is determined to be abnormal. This invention reduces the number of dishwasher parts used, achieving real-time water level detection without increasing the structural complexity of the dishwasher.

[0037] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings are only used to illustrate preferred embodiments and are not intended to limit the present invention.

[0039] Figure 1 This is a flowchart of the water level detection method for a dishwasher in an embodiment of the present invention;

[0040] Figure 2This is a schematic diagram of the time-water temperature change curve in an embodiment of the present invention;

[0041] Figure 3 This is a flowchart illustrating the specific implementation of the water level detection method for the dishwasher in this embodiment of the invention.

[0042] Figure 4 This is a structural diagram of the water level detection device for the dishwasher in an embodiment of the present invention. Detailed Implementation

[0043] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. Obviously, the described embodiments are only a portion, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0044] In this embodiment of the invention, the existing temperature sensing device on the dishwasher is added to replace the water level pressure switch for water volume detection. The temperature sensing device can be installed on the water cup inside the dishwasher, reducing the number of parts installed on the water cup and base, thereby reducing costs and the complexity of the dishwasher structure. Furthermore, using electrical control instead of mechanical control can increase the sensitivity and speed of water volume detection to a certain extent, making the response more sensitive and the control more flexible. In addition, using a temperature sensing device for water volume detection can not only detect whether the water level in the dishwasher drum has decreased, but also whether the water level in the dishwasher drum exceeds the maximum set water level, reducing the possibility of water shortage or overflow due to excessive water, avoiding affecting the washing effect, and thus realizing intelligent control to activate the corresponding water replenishment or drainage functions.

[0045] Figure 1 A flowchart of a water level detection method for a dishwasher according to an embodiment of the present invention is shown. Figure 1 As shown, the water level detection method for a dishwasher proposed in this embodiment of the invention includes the following steps:

[0046] S11. After the dishwasher turns on the heating and washing function, obtain the real-time temperature value of the washing water inside the dishwasher.

[0047] In this embodiment of the invention, the real-time temperature value of the washing water inside the dishwasher can be acquired in real time or periodically. Simultaneously with acquiring the real-time temperature value, a water volume detection operation is performed. The water volume detection operation stops when the acquired real-time temperature value is greater than or equal to the highest set temperature value corresponding to the heating washing function. Specifically, the real-time temperature value of the washing water can be detected using the existing temperature sensing device inside the dishwasher, avoiding the use of new dishwasher parts and achieving the goal of not increasing the structural complexity of the dishwasher.

[0048] S12. Determine the heating time of the washing water at the time of obtaining the real-time temperature value, and obtain the temperature threshold range corresponding to the heating time. The minimum value of the temperature threshold range is the temperature value of the washing water after the heating time when the washing water in the dishwasher is at its highest water level, and the maximum value of the temperature threshold range is the temperature value of the washing water after the heating time when the washing water in the dishwasher is at its lowest water level.

[0049] In this embodiment of the invention, the initial temperature of the washing water in the dishwasher can be set to a preset indoor temperature by default. The minimum value of the temperature threshold range is the temperature value obtained by heating the dishwasher from the preset indoor temperature for the specified heating time when the washing water in the dishwasher is at its maximum volume, and the minimum value of the temperature threshold range is the temperature value obtained by heating the dishwasher from the preset indoor temperature for the specified heating time when the washing water in the dishwasher is at its minimum volume.

[0050] Furthermore, to avoid inaccurate water volume detection due to different initial temperatures of the washing water in the dishwasher, in this embodiment of the invention, the initial temperature value of the washing water in the dishwasher can be obtained when the dishwasher turns on the heating washing function; a set of temperature threshold ranges corresponding to the initial temperature value can be obtained based on the initial temperature value, and the set of temperature threshold ranges includes temperature threshold ranges corresponding to different heating durations.

[0051] The temperature threshold range corresponding to different initial temperatures of the washing water can be obtained through multiple test experiments and pre-stored in the dishwasher controller, so as to enable the dishwasher to detect the water volume status in real time while running the heating washing function under different initial temperatures and different water volumes.

[0052] S13. Determine whether the real-time temperature value is within the temperature threshold range.

[0053] S14. If the real-time temperature value is not within the temperature threshold range, the water volume of the dishwasher is determined to be abnormal.

[0054] In this embodiment of the invention, if the real-time temperature value is not within the temperature threshold range, the water level of the dishwasher is determined to be abnormal. Specifically, if the real-time temperature value is greater than the maximum value of the temperature threshold range, the water level of the dishwasher is determined to be in a water shortage state; if the real-time temperature value is less than the minimum value of the temperature threshold range, the water level of the dishwasher is determined to be in an overflow state.

[0055] In this embodiment of the invention, when it is determined that the dishwasher is in a water shortage state, a water shortage warning is issued and the heating and washing function is stopped or the water replenishment function is started; when it is determined that the dishwasher is in an overflow state, an overflow warning is issued and the heating and washing function is stopped or the drainage function is started.

[0056] The dishwasher water level detection method proposed in this invention involves periodically acquiring the real-time temperature value of the washing water inside the dishwasher after the dishwasher's heating and washing function is activated; determining the heating duration of the washing water at the time of acquiring the real-time temperature value; acquiring a temperature threshold range corresponding to the heating duration; the minimum value of the temperature threshold range is the temperature value of the washing water after the heating duration when the washing water in the dishwasher is at its highest water level; the maximum value of the temperature threshold range is the temperature value of the washing water after the heating duration when the washing water in the dishwasher is at its lowest water level; determining whether the real-time temperature value is within the temperature threshold range; if the real-time temperature value is not within the temperature threshold range, determining that the dishwasher water level is abnormal. Compared with existing dishwasher water level detection solutions, this invention reduces the number of dishwasher parts used, achieving the effect of real-time water level detection while reducing the structural complexity of the dishwasher.

[0057] Furthermore, the specific implementation methods for determining the heating time of the washing water at the moment the real-time temperature value is obtained, and obtaining the temperature threshold range corresponding to the heating time, include:

[0058] Obtain the high water volume temperature change curve corresponding to the highest water volume in the dishwasher and the low water volume temperature change curve corresponding to the lowest water volume in the dishwasher. The initial temperature corresponding to the high water volume temperature change curve and the low water volume temperature change curve is the same as the initial temperature of the washing water in the dishwasher.

[0059] Extract the high water volume temperature value and low water volume temperature value corresponding to the current heating time from the high water volume temperature change curve and the low water volume temperature change curve;

[0060] The high water volume temperature value is taken as the minimum value of the temperature threshold range, and the low water volume temperature value is taken as the maximum value of the temperature threshold range, to obtain the temperature threshold range corresponding to the current heating time.

[0061] Figure 2 A schematic diagram of the time-water temperature change curve in an embodiment of the present invention is shown, as follows: Figure 2 As shown in the embodiments of the present invention, in order to better understand the method described in this patent and to more intuitively see the value and comparison process of the set of temperature threshold ranges corresponding to the initial temperature value, a time-water temperature change curve is used to display the temperature change of the washing water.

[0062] In this embodiment of the invention, the time-water temperature change curve represents the temperature change of the water participating in the washing process in the dishwasher as time progresses under the heating effect of the heating plate. This time-water temperature change curve is derived from experimental observations. In this embodiment, the time-water temperature change curve can be generated through the following experimental method: A certain amount of water is added to the dishwasher, and the water temperature is the lowest temperature allowed for the dishwasher to operate its heating washing function. Under normal operating conditions, the heating plate begins heating, and the temperature sensing device continuously acquires the real-time temperature value of the washing water. The acquired real-time temperature value is used as initial statistical data. The changing temperature value of the washing water over time is statistically analyzed, and the statistical results are displayed in the form of a growth curve graph.

[0063] In the embodiments of the present invention, in Figure 2 In the shown time-temperature change curves, the horizontal axis represents time, and the vertical axis represents temperature. Curves S1 and S2 are stored in memory as a set of temperature threshold ranges. This set of temperature threshold ranges includes temperature threshold ranges corresponding to different heating durations. It can be understood that the endpoints of these temperature threshold ranges are empirical temperature values ​​obtained through multiple experiments and modifications under different initial temperatures and water volumes. After the same heating duration, the maximum value of the temperature threshold range corresponds to the empirical temperature value on the S1 curve, and the minimum value of the temperature threshold range corresponds to the empirical temperature value on the S2 curve.

[0064] It is understandable that curve S1 represents the minimum permissible water volume during a dishwasher wash cycle, where the water temperature changes over time under the action of the heating plate. This minimum water volume represents the minimum amount of water that will prevent the dishwasher from running dry and causing the heating plate to burn out. Conversely, curve S2 represents the maximum permissible water volume during a dishwasher wash cycle, where the water temperature changes over time under the action of the heating plate. This maximum water volume represents the maximum amount of water that will prevent the dishwasher from overflowing. Therefore, in practical implementation, when the dishwasher water temperature change curve S falls within the temperature threshold range formed by curves S1 and S2, it indicates that the dishwasher's water volume is in a normal state. Figure 2 The S-curve shown represents the temperature change over time of the washing water under the action of the heating plate during the dishwasher washing process in a specific implementation. Based on the time-temperature change curve, it can be determined that when the S-curve representing the specific implementation exceeds the temperature threshold range formed by the S1 and S2 curves, the water volume of the dishwasher is in an abnormal state, such as water shortage or overflow.

[0065] Figure 3 The following is a flowchart illustrating the specific implementation of the water level detection method for a dishwasher in an embodiment of the present invention. Figure 2The time-water temperature change curve diagram shown illustrates the specific implementation of the water volume detection method for the dishwasher according to an embodiment of the present invention.

[0066] like Figure 3 As shown, in a specific embodiment, before the dishwasher starts working, it detects whether to perform a drainage operation after an overflow occurred in the previous working cycle; after the drainage operation is completed, the water inlet solenoid valve is opened to start water intake, and the water inlet solenoid valve is closed after water intake is completed; then the dishwasher starts the heating washing function. When the dishwasher starts the heating washing function, the washing pump starts working, the heating plate starts working, and the temperature sensing device in the dishwasher periodically obtains the real-time temperature value of the washing water in the dishwasher to monitor the temperature change of the washing water in real time.

[0067] like Figure 2 As shown in the embodiment of the invention, the temperature sensing device inside the dishwasher periodically acquires the real-time temperature value of the washing water inside the dishwasher. This includes: the temperature sensing device acquiring the initial temperature T0 of the washing water inside the dishwasher; searching in the temperature threshold set in the memory for the temperature threshold range corresponding to the heating time elapsed from when the dishwasher starts its heating washing function to when the initial temperature T0 is acquired; and further searching for initial empirical temperature values ​​T1 and T2 on the two curves corresponding to the initial temperature T0. Specifically, this includes: after every interval t, selecting the T1 value from curve S1 and the T2 value from curve S2 to generate a temperature threshold range for determining the water level status of the dishwasher. Each interval t is considered a working cycle, and a real-time temperature value is acquired every t interval. Furthermore, after the temperature sensing device acquires the initial temperature T0 of the washing water in the dishwasher, it searches for empirical temperature values ​​T1 and T2 after an interval of time t on the two curves S1 and S2. It then compares the real-time water temperature T after an interval of time t with T1 and T2 to perform subsequent logical judgments to achieve water volume detection. Similarly, it continuously acquires the real-time water temperature after intervals of 2t, 3t... and compares it with the empirical temperature values ​​that change relative to time.

[0068] In this embodiment, S1 is the curve representing the dishwasher's water level when it is low; S2 is the curve representing the dishwasher's water level when it is overflowing; S is the curve obtained by statistically analyzing the actual real-time temperature values; S1o is the schematic curve after shifting S1; T1 is the maximum value of the temperature threshold range, representing the temperature value of the washing water after an interval t when the washing water in the dishwasher is at its lowest level; T2 is the minimum value of the temperature threshold range, representing the temperature value of the washing water after an interval t when the washing water in the dishwasher is at its highest level.

[0069] like Figure 2As shown, in specific implementation, the process of judging the comparison water temperature includes: the temperature sensing device obtains the initial temperature T of the washing water in the dishwasher, and finds the empirical temperature values ​​T1 and T2 after an interval of t; it is determined whether T2 < T < T1; if the result of the judgment satisfies T2 < T < T1, then the amount of washing water in the dishwasher is normal, and the heating washing function continues to run; if the result of the judgment does not satisfy T2 < T < T1, then it is judged again whether T > T1. Furthermore, if T > T1, it means that after heating for the same duration t, the real-time temperature T of the dishwasher's washing water is higher than the temperature T1 reached when the washing water in the dishwasher is at its minimum level after heating. In this case, the dishwasher's water level is determined to be in a water shortage state, and a warning is issued. The dishwasher's heating and washing function is stopped, or the automatic water replenishment function is activated to replenish water to the dishwasher's cavity. After the water replenishment is completed, the process of obtaining the initial water temperature, heating, and comparing the water temperature can continue. If T < T2, it means that after heating for the same duration t, the real-time temperature T of the dishwasher's washing water is lower than the temperature T2 reached when the washing water in the dishwasher is at its maximum level after heating. In this case, the dishwasher's water level is determined to be in an overflow state, and a warning is issued. The dishwasher's heating and washing function is stopped, or the automatic drainage function is activated to drain some water. Then, the process of obtaining the initial water temperature, heating, and comparing the water temperature can continue.

[0070] In this embodiment of the invention, the judgment and comparison process continues until the water temperature rises to Ts. Once this temperature is reached, the judgment and comparison stop. The value of Ts is the highest set temperature corresponding to the dishwasher's heating and washing function. It should be noted that after the temperature sensing device detects that the washing water temperature has reached this temperature, the judgment and comparison control process ends, that is, the water volume detection operation stops, and the dishwasher continues to run subsequent washing functions.

[0071] This invention, by using a temperature sensing device instead of a water level pressure switch for water volume detection, reduces the number of corresponding parts, lowers the structural complexity of the dishwasher, and achieves the goal of cost reduction and efficiency improvement. By comparing the real-time temperature value with the empirical temperature values ​​under the minimum and maximum water volume conditions, it can not only detect the water volume status of the dishwasher, but also detect the changes in water volume after heating for the same time under different initial temperatures and water volumes, making the detection more accurate and flexible. Based on the detected water volume status, it controls the dishwasher to perform automatic water replenishment or drainage functions, enhancing the product's intelligence.

[0072] For the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0073] Figure 4 The diagram shows a structural diagram of a water level detection device for a dishwasher according to an embodiment of the present invention. Figure 4 As shown, the device includes a functional module for implementing the water level detection method for the dishwasher as described in the above embodiment.

[0074] Specifically, it includes a first acquisition module 201, a second acquisition module 202, and a judgment module 203, wherein:

[0075] The first acquisition module 201 is used to periodically acquire the real-time temperature value of the washing water inside the dishwasher after the dishwasher turns on the heating washing function.

[0076] The second acquisition module 202 is used to determine the heating time of the washing water at the time of the real-time temperature value acquisition, and to acquire a first temperature threshold range corresponding to the heating time. The minimum value of the first temperature threshold range is the temperature value of the washing water after the heating time when the washing water in the dishwasher is at its highest water level, and the maximum value of the first temperature threshold range is the temperature value of the washing water after the heating time when the washing water in the dishwasher is at its lowest water level.

[0077] The judgment module 203 is used to determine whether the real-time temperature value is within the first temperature threshold range; if the real-time temperature value is not within the first temperature threshold range, the judgment module determines that the water volume of the dishwasher is abnormal.

[0078] In this embodiment of the invention, the second acquisition module 202 is used to acquire the high water volume temperature change curve corresponding to the highest water volume in the dishwasher and the low water volume temperature change curve corresponding to the lowest water volume in the dishwasher. The initial temperature corresponding to the high water volume temperature change curve and the low water volume temperature change curve is the same as the initial temperature of the washing water in the dishwasher. The high water volume temperature change curve and the low water volume temperature change curve are intercepted to obtain the high water volume temperature value and the low water volume temperature value corresponding to the current heating time. The high water volume temperature value is taken as the minimum value of the temperature threshold range, and the low water volume temperature value is taken as the maximum value of the temperature threshold range, so as to obtain the temperature threshold range corresponding to the current heating time.

[0079] In this embodiment of the invention, the judgment module 203 is further configured to determine that the dishwasher is in a water shortage state when the real-time temperature value is greater than the maximum value of the temperature threshold range; and to determine that the dishwasher is in an overflow state when the real-time temperature value is less than the minimum value of the temperature threshold range.

[0080] In this embodiment of the invention, the device further includes a control module (not shown in the accompanying drawings). The control module is configured to issue a water shortage warning and control the dishwasher to stop the heating and washing function or start the water replenishment function when the judgment module 203 determines that the dishwasher is in a water shortage state; issue an overflow warning and control the dishwasher to stop the heating and washing function or start the drainage function when the judgment module 203 determines that the dishwasher is in an overflow state; and control the dishwasher to stop the water level detection operation when the real-time temperature value obtained by the first acquisition module 201 is greater than or equal to the highest set temperature value corresponding to the heating and washing function.

[0081] As the device embodiment is basically similar to the method embodiment, the description is relatively simple, and relevant parts can be found in the description of the method embodiment.

[0082] Furthermore, embodiments of the present invention also propose a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the water level detection method for a dishwasher as described above.

[0083] In this embodiment, if the water level detection method for a dishwasher is implemented as 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, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processing device, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer storage device, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc. It should be noted that the content contained in the computer-readable medium may be appropriately added to or subtracted from the content as required by the legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium may not include electrical carrier signals and telecommunication signals.

[0084] Furthermore, embodiments of the present invention also propose a dishwasher, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the water level detection method for the dishwasher as described above. For example... Figure 1 S11 to S14 are shown. Alternatively, when the processor executes the computer program, it implements the functions of each module / unit in the above-described embodiment of the dishwasher's water level detection device, for example... Figure 4 The first acquisition module 201, the second acquisition module 202, and the judgment module 203 are shown.

[0085] In this embodiment, the dishwasher also includes a temperature sensing device. For example, a temperature sensing bag can be installed on a water cup inside the dishwasher to detect the real-time temperature of the washing water inside the dishwasher after the dishwasher turns on the heating washing function, so as to perform real-time water volume detection.

[0086] This invention discloses a water level detection method and device for a dishwasher, a dishwasher, and a storage medium. After the dishwasher's heating and washing function is activated, the real-time temperature of the washing water inside the dishwasher is periodically acquired. The water level status of the dishwasher is detected based on a temperature threshold range corresponding to the heating duration of the washing water at the time the real-time temperature value is acquired. When the real-time temperature value is not within the temperature threshold range corresponding to the heating duration, the water level of the dishwasher is determined to be abnormal. This invention uses a temperature sensing device instead of a water level and pressure detection switch for water level detection, which reduces the number of dishwasher parts used and achieves the purpose of real-time water level detection and cost reduction and efficiency improvement without increasing the dishwasher structure.

[0087] Furthermore, the real-time temperature value is compared with the temperature of the washing water after the heating time when the washing water in the dishwasher is at its maximum level and the temperature of the washing water after the heating time when the washing water in the dishwasher is at its minimum level. This not only detects the water level status of the dishwasher but also detects the changes in water level after heating for the same amount of time under different temperatures and water levels. This makes the detection more accurate and flexible, and the dishwasher can be controlled to perform automatic water replenishment or drainage based on the detected water level status, thus enhancing the product's intelligence.

[0088] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for detecting the water level in a dishwasher, characterized in that, The method includes: After the dishwasher turns on the heated washing function, obtain the real-time temperature value of the washing water inside the dishwasher; The heating time of the washing water at the moment the real-time temperature value is obtained is determined, and the temperature threshold range corresponding to the heating time is obtained. The minimum value of the temperature threshold range is the temperature value of the washing water after the heating time when the washing water in the dishwasher is at the highest water level, and the maximum value of the temperature threshold range is the temperature value of the washing water after the heating time when the washing water in the dishwasher is at the lowest water level. Obtain the high water volume temperature change curve corresponding to the highest water volume in the dishwasher and the low water volume temperature change curve corresponding to the lowest water volume in the dishwasher. The initial temperature corresponding to the high water volume temperature change curve and the low water volume temperature change curve is the same as the initial temperature of the washing water in the dishwasher. Extract the high water volume temperature value and low water volume temperature value corresponding to the current heating time from the high water volume temperature change curve and the low water volume temperature change curve; The high water volume temperature value is taken as the minimum value of the temperature threshold range, and the low water volume temperature value is taken as the maximum value of the temperature threshold range, to obtain the temperature threshold range corresponding to the current heating time. Determine whether the real-time temperature value is within the temperature threshold range; If the real-time temperature value is not within the temperature threshold range, the water volume of the dishwasher is determined to be abnormal. If the real-time temperature value is greater than the maximum value of the temperature threshold range, it is determined that the dishwasher is in a water shortage state. If the real-time temperature value is less than the minimum value of the temperature threshold range, it is determined that the dishwasher is in an overflow state.

2. The method according to claim 1, characterized in that, The method further includes: When the dishwasher is found to be low on water, a water shortage warning will be issued, and the heating and washing functions will be stopped or the water replenishment function will be activated. When the dishwasher detects that the water level is overflowing, it will issue an overflow warning and stop the heating and washing function or start the drainage function.

3. The method according to claim 1, characterized in that, The method further includes: When the obtained real-time temperature value is greater than or equal to the highest set temperature value corresponding to the heating and washing function, the water volume detection operation is stopped.

4. The method according to claim 1, characterized in that, The method further includes: When the dishwasher turns on the heated washing function, obtain the initial temperature value of the washing water inside the dishwasher; Based on the initial temperature value, a set of temperature threshold ranges corresponding to the initial temperature value is obtained, and the set of temperature threshold ranges includes temperature threshold ranges corresponding to different heating durations.

5. A water level detection device for a dishwasher, characterized in that, The device includes: The first acquisition module is used to acquire the real-time temperature value of the washing water in the dishwasher after the dishwasher turns on the heating washing function; The second acquisition module is used to determine the heating time of the washing water at the time of acquiring the real-time temperature value, and to acquire a first temperature threshold range corresponding to the heating time. The minimum value of the first temperature threshold range is the temperature value of the washing water after the heating time when the washing water in the dishwasher is at its highest water level, and the maximum value of the first temperature threshold range is the temperature value of the washing water after the heating time when the washing water in the dishwasher is at its lowest water level. The second acquisition module is used to acquire a high water level temperature change curve corresponding to the highest water level and a low water level temperature change curve corresponding to the lowest water level. The initial temperature corresponding to the high water level temperature change curve and the low water level temperature change curve is the same as the initial temperature of the washing water in the dishwasher. The module also extracts the high water level temperature value and the low water level temperature value corresponding to the current heating time from the high water level temperature change curve and the low water level temperature value, and uses the high water level temperature value as the minimum value of the temperature threshold range and the low water level temperature value as the maximum value of the temperature threshold range to obtain the temperature threshold range corresponding to the current heating time. The judgment module is used to determine whether the real-time temperature value is within the first temperature threshold range. If the real-time temperature value is not within the first temperature threshold range, the judgment module determines that the water volume of the dishwasher is abnormal. The judgment module is further configured to determine that the dishwasher is in a water shortage state when the real-time temperature value is greater than the maximum value of the temperature threshold range; and to determine that the dishwasher is in an overflow state when the real-time temperature value is less than the minimum value of the temperature threshold range.

6. A dishwasher, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method as described in any one of claims 1 to 4.

7. The dishwasher according to claim 6, characterized in that, Also includes: A temperature sensor, installed on the water cup inside the dishwasher, is used to detect the real-time temperature of the washing water inside the dishwasher after the dishwasher turns on the heating washing function, so as to detect the real-time water volume.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 4.

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