Dish-washing machine control device and dish-washing machine

Abstract

The utility model discloses a control device of a dish-washing machine and the dish-washing machine, and belongs to the field of cleaning equipment. According to the technical scheme provided by the embodiment of the utility model, the water quality sensor is arranged in the dish-washing machine to obtain the water quality value of water in the dish-washing machine. And a water quantity judgment module is arranged to judge the water quantity sufficiency condition in the dish washing machine according to the water quality value. The control module is arranged to control the washing or rinsing process of the dish-washing machine according to the water quantity sufficiency condition, so that the washing or rinsing process can be matched with the water quantity in the dish-washing machine, and the problem that in the washing or rinsing process of the dish-washing machine, noise is too high due to insufficient water inflow is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cleaning equipment, especially a control device of a dish washing machine and the dish washing machine. BACKGROUND

[0002] With the development of society, more and more users will choose a dish washing machine to wash dishes, thereby liberating hands and reducing housework burden. In the washing and rinsing process of the dish washing machine, the water inlet of the dish washing machine needs to be controlled.

[0003] In the related art, a fixed water inlet amount is usually used to control the water inlet of the dish washing machine, that is, as long as the same washing mode or rinsing mode is used in different washing or rinsing processes, the water inlet amount of the dish washing machine is certain.

[0004] However, the water inlet of the dish washing machine controlled by the method in the related art may be insufficient, which may cause the problem of excessively high noise in the washing and rinsing process. INVENTION CONTENTS

[0005] The utility model embodiment provides a control device of a dish washing machine and the dish washing machine, can avoid the problem of excessively high noise caused by insufficient water inlet in the washing or rinsing process of the dish washing machine, and the technical scheme is as follows:

[0006] On the one hand, a control device of a dish washing machine is provided, and the device comprises:

[0007] A water quality sensor is arranged in the interior of the dish washing machine and is used to acquire the water quality value of water in the dish washing machine;

[0008] A water amount judgment module is electrically connected with the water quality sensor and is used to acquire multiple water quality values of water in the dish washing machine at different time points from the water quality sensor when the dish washing machine is washing or rinsing; based on the multiple water quality values, the water amount sufficient condition of water in the dish washing machine is determined, and the water amount sufficient condition is used to indicate whether the water amount is sufficient;

[0009] A control module is electrically connected with the water amount judgment module and is used to acquire the water amount sufficient condition from the water amount judgment module; based on the water amount sufficient condition, the washing or rinsing process of the dish washing machine is controlled.

[0010] Through the technical scheme provided by the utility model embodiment, the water quality sensor is arranged in the dish washing machine to acquire the water quality value of water in the dish washing machine. The water amount judgment module is arranged to determine the water amount sufficient condition of water in the dish washing machine by using the water quality value. The control module is arranged to control the washing or rinsing process of the dish washing machine according to the water amount sufficient condition, so that the washing or rinsing process can be matched with the water amount in the dish washing machine, thereby avoiding the problem of excessively high noise caused by insufficient water inlet in the washing or rinsing process of the dish washing machine.

[0011] In a possible implementation, the water quality sensor is a turbidity sensor, and the water quality sensor is configured to obtain turbidity of the water in the dishwasher.

[0012] Alternatively, the water quality sensor is a conductivity sensor, and the water quality sensor is configured to obtain conductivity of the water in the dishwasher.

[0013] Alternatively, the water quality sensor comprises a light absorption parameter determination unit and a pollution index determination unit, the light absorption parameter determination unit is configured to obtain a light absorption parameter, the light absorption parameter is used to represent an absorption degree of the water in the dishwasher to light of different wavelengths; and the pollution index determination unit is configured to determine a pollution index of the water in the dishwasher based on the light absorption parameter, the pollution index is used to represent how much the pollution.

[0014] In the above implementation, different types of water quality sensors can be used to obtain the water quality value of the water in the dishwasher, and the flexibility of the selection of the water quality sensor is good.

[0015] In a possible implementation, the light absorption parameter determination unit comprises a light source and a spectrum sensor, the light source and the spectrum sensor are oppositely arranged at a preset distance in the dishwasher, the spectrum sensor is electrically connected to the pollution index determination unit, the light source is configured to emit light of multiple wavelengths during washing or rinsing of the dishwasher, and the spectrum sensor is configured to receive the light emitted by the light source and determine the light absorption parameter of the received light.

[0016] In the above implementation, the light absorption parameter can be determined by using the absorption degree of the pollution to light of different wavelengths, and the accuracy of the light absorption parameter is high.

[0017] In a possible implementation, the water quality sensor obtains the water quality value of the water in the dishwasher when the dishwasher is in a water filling stage of a washing program, and the washing program comprises a main washing timing and a rinsing timing.

[0018] In a possible implementation, the water amount determination module is configured to determine a water quality value fluctuation index of the dishwasher at different moments based on the plurality of water quality values, and the water quality value fluctuation index is used to represent a fluctuation of the water quality value.

[0019] The water amount determination module is configured to determine the water amount sufficiency in the dishwasher based on the water quality value fluctuation index of the dishwasher at different moments.

[0020] In the above implementation, the water quality value fluctuation index can be determined by the water quality values, and the water sufficiency condition can be determined by the water quality value fluctuation index, without adding hardware in the dishwasher, so that the water sufficiency condition can be determined at low cost.

[0021] In a possible implementation, the water quantity determination module is configured to subtract each water quality value from a water quality value at a previous time to obtain a water quality value fluctuation index of water in the dishwasher at different times.

[0022] Alternatively, the water quantity determination module is configured to subtract each water quality value from an average water quality value of the plurality of water quality values to obtain a water quality value fluctuation index of water in the dishwasher at different times.

[0023] In the above implementation, the water quality value fluctuation index can be determined by the difference between the water quality values, and the water quality value fluctuation index has good interpretability and high determination efficiency.

[0024] In a possible implementation, the water quantity determination module is configured to compare the water quality value fluctuation index at different times with a water quality value fluctuation index threshold.

[0025] The water quantity determination module is configured to determine that the water sufficiency condition of the dishwasher is water sufficient when the water quality value fluctuation index is less than or equal to the water quality value fluctuation index threshold, and determine that the water sufficiency condition of the dishwasher is water insufficient when the water quality value fluctuation index at any time is greater than the water quality value fluctuation index threshold, and the water quality value fluctuation index at the N continuous times after the time is greater than the water quality value fluctuation index threshold, where N is a positive integer.

[0026] In the above implementation, the water sufficiency condition can be determined by the water quality value fluctuation index, and the determination is implemented at low cost.

[0027] In a possible implementation, the washing program includes a main washing sequence and a rinsing sequence; and the water quality value fluctuation index threshold is determined based on a sequence currently executed by the dishwasher.

[0028] In a possible implementation, the control module is configured to control the dishwasher to continue washing or rinsing when the water sufficiency condition is water sufficient.

[0029] The control module is configured to control the dishwasher to replenish water and redetermine the water sufficiency condition of the dishwasher when the water sufficiency condition is water insufficient, and control the washing or rinsing process of the dishwasher based on the redetermined water sufficiency condition.

[0030] In the above embodiment, the washing or rinsing process is controlled according to the water sufficiency condition, so that the washing or rinsing process is matched with the water amount in the dishwasher, the washing or rinsing effect is improved, and the water pump damage and noise generation are prevented.

[0031] In a possible implementation, the control module is configured to, in a case where the water sufficiency condition is the water insufficiency condition, control the dishwasher to supplement a preset water amount; determine a total amount of water in the dishwasher as a sum of the preset water amount and an initial water amount of the dishwasher; and in a case where the total amount of water in the dishwasher is less than or equal to a water threshold and a re-determined water sufficiency condition is the water sufficiency condition, control the dishwasher to continue the washing or rinsing.

[0032] The control module is configured to, in a case where the total amount of water in the dishwasher is greater than the water threshold, control the dishwasher to stop the washing or rinsing and trigger a fault alarm.

[0033] In the above embodiment, the total amount of water in the dishwasher is combined for comprehensive judgment, so that the water sufficiency condition is more accurately determined. Meanwhile, the dishwasher fault can be found in time.

[0034] In a possible implementation, the water amount judgment module is further configured to, after the dishwasher supplements the preset water amount, re-acquire multiple water quality values of the water in the dishwasher at different time points from the water quality sensor.

[0035] The water amount judgment module is further configured to re-determine a water quality value fluctuation index of the dishwasher at different time points based on the re-acquired multiple water quality values.

[0036] The water amount judgment module is further configured to, in a case where the total amount of water in the dishwasher is less than or equal to a water threshold, compare the re-determined water quality value fluctuation index after water supplement with a water quality value fluctuation index threshold.

[0037] The water amount judgment module is further configured to, in a case where the re-determined water quality value fluctuation index is greater than the water quality value fluctuation index threshold, determine that the water sufficiency condition of the dishwasher is the water insufficiency condition.

[0038] The control module is further configured to control the dishwasher to supplement the preset water amount again and update the total amount of water in the dishwasher.

[0039] The control module is further configured to control the washing or rinsing process of the dishwasher based on the total amount of water in the dishwasher and the re-determined water sufficiency condition after water supplement again.

[0040] In the above embodiment, the water is supplemented to the dishwasher in a cyclic judgment manner, so that the dishwasher can perform the washing or rinsing in the water sufficiency condition.

[0041] In a possible implementation, the device further comprises a tableware quantity determination module and a threshold determination module, the tableware quantity determination module being electrically connected to the threshold determination module.

[0042] The tableware quantity determination module is configured to determine the quantity of tableware in the dishwasher.

[0043] The threshold determination module is configured to determine the water quality value fluctuation index threshold based on the quantity of tableware in the dishwasher and the total amount of water in the dishwasher.

[0044] In the above implementation, the water quality value fluctuation index is determined according to the actual situation of tableware in the dishwasher, and the water quality value fluctuation index is better adapted to the actual situation of the dishwasher.

[0045] In one aspect, a dishwasher is provided, which is installed with the control device of any of the above technical solutions. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0047] Figure 1 is a structural schematic diagram of a dishwasher provided by the embodiments of the present application;

[0048] Figure 2 is a structural schematic diagram of a control device of a dishwasher provided by the embodiments of the present application;

[0049] Figure 3 is a schematic diagram of the fluctuation of water quality value in the case of sufficient water quantity provided by the embodiments of the present application;

[0050] Figure 4 is a structural schematic diagram of another control device of a dishwasher provided by the embodiments of the present application;

[0051] Figure 5 is a flowchart of different hardware cooperation modes in a control device of a dishwasher provided by the embodiments of the present application. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0053] The terms "first", "second", and the like are used in the utility model to distinguish the same or similar items with the same function, and it should be understood that there is no logical or time sequence dependency between the "first", "second", and "n", and the number and execution order are not limited.

[0054] Dishwasher: The dishwasher is a machine that uses chemical, mechanical, heat and electricity to wash, rinse and dry dishes, glasses, cutlery and cooking utensils.

[0055] Water quality sensor: a sensor for measuring water quality, in the utility model embodiment, the water quality sensor includes turbidity sensor, conductivity sensor, and the combination of light absorption parameter determination unit and pollution index determination unit.

[0056] In the related art, a fixed water inflow is usually used to control the water inflow of the dishwasher, that is, as long as the same washing mode or rinsing mode is used, regardless of the situation of the dishes in the dishwasher, the dishwasher will be controlled to have a fixed amount of water inflow. However, in the actual use of the dishwasher, the water inflow required in different situations is different, if the fixed amount of water inflow is used, in the case of insufficient water inflow, the water pump will suck air, resulting in damage to the water pump and increase in noise. The technical scheme provided by the utility model embodiment can avoid the problem of excessively high noise caused by insufficient water inflow during washing or rinsing of the dishwasher.

[0057] Figure 1 is a structural schematic view of a dishwasher provided by the utility model embodiment, referring to Figure 1 , the dishwasher 100 includes a water inlet pipe 101, a resin cavity 102, a first connecting pipe 103, a water cup 104, a second connecting pipe 105, a water pump 106 and an inner container 107. The water inlet pipe 101 is connected with a water source, and water enters the dishwasher 100 through the water inlet pipe 101. The resin cavity 102 is used for accommodating resin, and the resin can soften the water quality, reduce the content of calcium and magnesium ions in the water, prevent the formation of scale, and ensure the normal operation and prolong the service life of the dishwasher. The first connecting pipe 103 is used for connecting the resin cavity 102 and the water cup 104, and the water in the resin cavity 102 can enter the water cup 104 through the first connecting pipe 103. The water cup 104 is the bottom of the inner container 107 of the dishwasher 100, the inner container 107 is used for accommodating the cleaned dishes, the second connecting pipe 105 is used for connecting the water cup 104 and the water pump 106, and the water pump 106 can pump the water in the water cup into the inner container 107 to realize the washing or rinsing of the dishes in the inner container 107. The control device of the dishwasher provided by the utility model embodiment can be applied to the dishwasher shown in Figure 1 .

[0058] The control device of the dishwasher provided by the utility model embodiment will be described below, referring toFigure 2 The control device 200 of the dishwasher comprises a water quality sensor 201, a water quantity judgment module 202 and a control module 203.

[0059] The water quality sensor 201 is arranged in the interior of the dishwasher 100 and is used to acquire a water quality value of water in the dishwasher 100.

[0060] The water quantity judgment module 202 is electrically connected with the water quality sensor 201 and is used to acquire a plurality of water quality values of water in the dishwasher 100 at different time points from the water quality sensor 201 when the dishwasher 100 is performing washing or rinsing. Based on the plurality of water quality values, a water quantity sufficient condition of water in the dishwasher 100 is determined, which is used to indicate whether the water quantity is sufficient.

[0061] The control module 203 is electrically connected with the water quantity judgment module 202 and is used to acquire the water quantity sufficient condition from the water quantity judgment module 202. Based on the water quantity sufficient condition, the washing or rinsing process of the dishwasher 100 is controlled.

[0062] The water quality sensor 201, the water quantity judgment module 202 and the control module 203 are hardware modules with specific functions, and the water quality sensor 201, the water quantity judgment module 202 and the control module 203 are combined into the control device 200 of the dishwasher 100 provided by the embodiment of the utility model by using the above connection mode. The water quality sensor 201 is used for measuring the water quality value of the water in the dishwasher 100, and in some embodiments, is installed in the water cup 104 of the dishwasher 100, so that the water quality value in the water cup 104 can be measured, that is, the water quality value in the water cup 104 is determined as the water quality value of the water in the dishwasher 100. In other embodiments, the water quality sensor 201 is installed in the inner container 107 of the dishwasher 100, so that the water quality value in the inner container 107 can be measured, that is, the water quality value in the inner container 107 is determined as the water quality value of the water in the dishwasher 100. The water quantity judgment module 202 is used for judging the water quantity sufficiency in the dishwasher 100, that is, determining whether the water quantity in the dishwasher 100 is sufficient. When the water quantity judgment module 202 judges the water quantity sufficiency in the dishwasher 100, the water quality value in the dishwasher 100 is used, because when the water quality sensor 201 measures the water quality value, the water quality sensor 201 needs to be in full contact with the water in the dishwasher 100, and in the case that the contact area between the water and the water quality sensor 201 changes, the water quality value measured by the water quality sensor 201 will also change, thereby causing the fluctuation of the water quality value. In the process of washing or rinsing of the dishwasher 100, the water pump 106 of the dishwasher 100 will pressurize the water in the water cup 104 and pump it into the inner container 107, thereby cleaning the dishes by spraying. In the case that the water quantity in the dishwasher 100 is sufficient, the contact area between the water and the water quality sensor 201 will not change greatly, so the water quality value measured by the water quality sensor 201 will not change greatly. In the case that the water quantity in the dishwasher 100 is insufficient, the contact area between the water and the water quality sensor 201 will change greatly, so the water quality value measured by the water quality sensor 201 will also change greatly. For example, after the dishwasher 100 is filled with water, the water pump 106 starts, and the water in the dishwasher 100 circulates under the action of the water pump 106. In the case that the water quantity in the dishwasher 100 is insufficient, the contact area between the water and the water quality sensor 201 will fluctuate, and this fluctuation of the contact area is reflected on the water quality value measured by the water quality sensor 201, that is, the measured water quality value will also fluctuate. In addition, the water pumped out by the water pump 106 will reach the spray arm of the dishwasher 100, and the water sprayed from the spray arm will fall into the water cup 104, and the water in the water cup 104 will enter the water pump 106 again under the action of the water pump 106, so the water quality value measured by the water quality sensor 201 may also fluctuate again. By using the above phenomenon, the purpose of judging the water quantity sufficiency in the dishwasher 100 by using the fluctuation of the water quality value can be achieved.The control module 203 is configured to control the dishwasher 100. In the embodiment of the present application, the control module 203 can control the washing or rinsing process of the dishwasher 100. The control includes continuing the washing or rinsing or stopping the washing or rinsing. In the process of controlling the dishwasher 100 by the control module 203, the control is realized based on whether the water in the dishwasher 100 is sufficient, so that the washing or rinsing process of the dishwasher 100 is matched with the water in the dishwasher 100, thereby eliminating the problem of excessive noise in the washing and rinsing process.

[0063] In some embodiments, in addition to the insufficient water inflow of the dishwasher 100, the problem of excessive water inflow of the dishwasher 100 may also occur when a fixed water inflow is adopted. The excessive water inflow does not cause the problems of excessive noise or damage to the water pump 106, but causes the problems of water resource waste and excessive heating energy consumption. In order to solve this problem, the control module 203 can control the initial water inflow of the dishwasher 100, for example, the control module 203 controls the initial water inflow to be a smaller target water inflow. If the target water inflow is insufficient, the dishwasher 100 is subsequently watered according to the actual situation. In this way, the problem caused by the excessive water inflow of the dishwasher 100 can be avoided to a certain extent.

[0064] The initial water inflow is the water inflow before the dishwasher 100 starts washing or rinsing.

[0065] The way in which the water quality sensor 201 obtains the water quality value is described below.

[0066] In a possible implementation, the water quality sensor 201 is a turbidity sensor, and the water quality sensor 201 is configured to obtain the turbidity of the water in the dishwasher 100.

[0067] In the case that the water quality sensor 201 is a turbidity sensor, the water quality value is the turbidity measured by the turbidity sensor. The turbidity sensor is used to measure the turbidity of water, and the turbidity is used to represent the amount of suspended matter in the water. The greater the turbidity, the more suspended matter; the smaller the turbidity, the less suspended matter. The working principle of the turbidity sensor is that when light passes through water containing suspended matter, part of the light will be scattered by the suspended matter, and another part will be absorbed by the suspended matter. The water quality turbidity sensor measures the intensity of the scattered and absorbed light, and then determines the turbidity of the water according to the light intensity. Based on the above principle, the turbidity sensor includes a light source, a light receiver, and a data processing unit. The light source is used to emit light, the light receiver is used to receive light, and the data processing unit is used to determine the turbidity according to the intensity difference between the emitted light and the received light. The algorithm used by the data processing unit to determine the turbidity based on the intensity difference between the light intensity is set by the technician according to the actual situation, and the embodiments of the present application do not limit this. In addition, the above-mentioned turbidity sensor can also include more components, and the embodiments of the present application do not limit the type and structure of the turbidity sensor.

[0068] In one possible implementation, the water quality sensor 201 is a conductivity sensor, and the water quality sensor 201 is used to obtain the conductivity of the water in the dishwasher 100. In some embodiments, the conductivity sensor is a TDS (Total Dissolved Solids) sensor.

[0069] In the case that the water quality sensor 201 is a conductivity sensor, the water quality value is the conductivity measured by the conductivity sensor. The conductivity sensor is used to measure the conductivity of water, and the conductivity of water is used to represent the amount of ion concentration in water. The greater the conductivity of water, the higher the ion concentration in water; the smaller the conductivity of water, the lower the ion concentration in water. The working principle of the conductivity sensor mainly depends on the relationship between the ions present in the liquid and the current. When the current passes through the liquid, the ions will interfere with the flow of the current, thereby changing the value of the conductivity. The sensor can determine the ion concentration in the liquid by measuring the change in conductivity, thereby realizing the measurement of the conductivity of the liquid. The embodiments of the present application do not limit the type and structure of the conductivity sensor.

[0070] In one possible implementation, the water quality sensor 201 includes a light absorption parameter determination unit and a pollution index determination unit. The light absorption parameter determination unit is used to obtain a light absorption parameter, and the light absorption parameter is used to represent the absorption degree of different wavelengths of light by the water in the dishwasher 100. The pollution index determination unit is used to determine the pollution index of the water in the dishwasher 100 based on the light absorption parameter, and the pollution index is used to represent the amount of pollutants.

[0071] In the case that the water quality sensor 201 comprises the light absorption parameter determining unit and the pollution index determining unit, the water quality value is the pollution index. The greater the pollution index is, the more pollutants in the water; the smaller the pollution index is, the less pollutants in the water. The principle of measuring the pollution index is that when light passes through water, different wavelengths of light are absorbed by different substances in the water to form a specific absorption spectrum, and the light absorption parameter is used to represent the absorption spectrum. By analyzing the light absorption parameter, the types and contents of pollutants in the water can be identified, that is, the pollution index is obtained.

[0072] In some embodiments, the light absorption parameter determining unit comprises a light source and a spectrum sensor, the light source and the spectrum sensor are oppositely arranged at a preset distance in the dishwasher 100, the spectrum sensor is electrically connected with the pollution index determining unit, the light source is used to emit light of multiple wavelengths during the washing or rinsing process of the dishwasher 100, and the spectrum sensor is used to receive the light emitted by the light source and determine the light absorption parameter of the received light.

[0073] The preset distance is set by a technician according to the actual situation, and the embodiments of the utility model are not limited thereto. For example, the light source and the spectrum sensor are arranged on the inner walls of the water cup 104 of the dishwasher 100 oppositely, so that the measurement of the pollution index is realized.

[0074] The way in which the water quality sensor 201 obtains the water quality value will be described below.

[0075] In a possible implementation, when the dishwasher is in the water filling stage of the washing program, the water quality sensor 201 obtains the water quality value of the water in the dishwasher, and the washing program comprises a main washing time sequence and a rinsing time sequence.

[0076] The water filling stage of the washing program comprises the water filling stage of the main washing time sequence and the water filling stage of the rinsing time sequence, and the water filling stage is usually within 1-5 minutes after the start of the washing program. In some embodiments, the number of rinsing time sequences is one or more, and accordingly, in the case that the number of rinsing time sequences is more than one, the water filling stage of the rinsing time sequence comprises the water filling stage of each rinsing time sequence. In addition, the way in which the water quality sensor 201 obtains the water quality value in the dishwasher belongs to the same inventive concept as described in the previous embodiment, and the implementation process will not be described again. In some embodiments, the washing program comprises multiple types of time sequences, such as washing time sequences, rinsing time sequences, and drying time sequences, etc., wherein the number of rinsing time sequences is usually more than one, denoted as rinsing time sequence 1, rinsing time sequence 2, …, and rinsing time sequence n, n is a positive integer.

[0077] The way in which the water amount determining module 202 determines the sufficient water amount condition will be described below.

[0078] In a possible implementation, the water amount determining module 202 is configured to determine, based on the plurality of water quality values, water quality value fluctuation indexes of the dishwasher 100 at different time points, the water quality value fluctuation index being used to represent a fluctuation condition of the water quality value. The water amount determining module 202 is configured to determine, based on the water quality value fluctuation indexes of the dishwasher 100 at different time points, whether the water amount in the dishwasher 100 is sufficient.

[0079] In a case where the water quality value fluctuation index is large, that is, the water quality value fluctuates sharply, it indicates that the contact area between the water and the water quality sensor 201 changes greatly, the water in the dishwasher 100 cannot keep covering the water quality sensor 201, and thus it indicates that the water amount in the dishwasher 100 is insufficient, and the water pump 106 can have a problem of pumping air. In a case where the water quality value fluctuation index is small, that is, the water quality value fluctuates gently, it indicates that the contact area between the water and the water quality sensor 201 does not change greatly, the water in the dishwasher 100 can keep covering the water quality sensor 201, and thus it indicates that the water amount in the dishwasher 100 is sufficient.

[0080] The manner in which the water amount determining module 202 determines the water quality value fluctuation indexes at different time points will be described below.

[0081] In a possible implementation, the water amount determining module 202 is configured to subtract each water quality value from a water quality value at a previous time point, to obtain the water quality value fluctuation indexes of the water in the dishwasher 100 at different time points.

[0082] In a case where the difference between the water quality values at adjacent time points can intuitively show the change of the water quality value, the greater the difference between the water quality values at adjacent time points, the more sharply the water quality values at adjacent time points change, the greater the water quality value fluctuation, and thus the greater the water quality value fluctuation index; the smaller the difference between the water quality values at adjacent time points, the more gently the water quality values at adjacent time points change, the smaller the water quality value fluctuation, and thus the smaller the water quality value fluctuation index. The difference between the water quality values can be used as the water quality value fluctuation index, which has good interpretability. In some embodiments, the water amount determining module 202 can implement the above-mentioned water quality value subtraction process by using a subtracter, and store the water quality value fluctuation index by using a register.

[0083] In this implementation, the water quality value is directly subtracted from the water quality value at the previous time point, to obtain the water quality value fluctuation index at the different time point, and the determination efficiency of the water quality value fluctuation index is high.

[0084] In a possible implementation, the water amount determining module 202 is configured to subtract each water quality value from an average water quality value of the plurality of water quality values, to obtain the water quality value fluctuation indexes of the water in the dishwasher 100 at different time points.

[0085] The multiple water quality values are water quality values collected within a preset time length, one water quality value corresponds to one collection time, and the preset time length is set by a technician according to an actual situation, for example, 3s or 5s, and the embodiment of the utility model does not limit this. The average water quality value of the multiple water quality values can be regarded as a baseline of the water quality value of the water in the dishwasher 100 within the preset time length, and the deviation degree of the multiple water quality values from the baseline can be obtained by subtracting each water quality value from the average water quality value, and the deviation degree can reflect the fluctuation of the water quality value. The greater the difference between the water quality value and the average water quality value, the more intense the fluctuation of the water quality value, and the greater the water quality value fluctuation index; the smaller the difference between the water quality value and the average water quality value, the more gentle the fluctuation of the water quality value, and the smaller the water quality value fluctuation index. In some embodiments, the water amount determination module 202 realizes the summation process in determining the average water quality value by using an adder, realizes the division process in determining the average water quality value by using a flip-flop, and stores the water quality value fluctuation index by using a register.

[0086] In this implementation, the average water quality value is determined by using multiple water quality values, and the water quality value fluctuation index is determined by using the average water quality value as a baseline, and the accuracy of the water quality value fluctuation index is high.

[0087] The way in which the water amount determination module 202 determines the water amount sufficiency of the dishwasher 100 is described below.

[0088] In a possible implementation, the water amount determination module 202 is configured to compare the water quality value fluctuation index at different times with a water quality value fluctuation index threshold. The water amount determination module 202 is configured to determine that the water amount sufficiency of the dishwasher 100 is sufficient in water amount in a case where the water quality value fluctuation index is less than or equal to the water quality value fluctuation index threshold. In a case where the water quality value fluctuation index at any time is greater than the water quality value fluctuation index threshold, and the water quality value fluctuation index at N consecutive times after the time is greater than the water quality value fluctuation index threshold, the water amount sufficiency of the dishwasher 100 is determined to be insufficient in water amount, and N is a positive integer.

[0089] The water quality value fluctuation index threshold is an upper limit of the water quality value fluctuation index under the normal condition of sufficient water amount, and the water quality value fluctuation index threshold is set by a technician according to an actual situation or determined by the dishwasher 100 according to an actual situation, and the way in which the water quality value fluctuation index threshold is determined will be described later. The water amount determination module 202 compares the water quality value fluctuation index with the water quality value fluctuation index threshold by using a comparator. In a case where the water quality value fluctuation index at any time is greater than the water quality value fluctuation index threshold, whether the water quality value fluctuation index at N consecutive times is greater than the water quality value fluctuation index threshold is further determined, in order to avoid water amount misjudgment and improve the accuracy of the water amount sufficiency determination. N is set by a technician according to an actual situation, and the embodiment of the utility model does not limit this.

[0090] In some embodiments, in the case that the water quality value fluctuation index of M time points in the N time points after the time point is less than or equal to the water quality value fluctuation index threshold value, the water amount sufficient condition of the dishwasher 100 is determined as water amount sufficient, M is a positive integer less than N. M is set by the technician according to the actual situation, and the embodiment of the utility model does not limit this.

[0091] In order to more clearly illustrate the above-mentioned embodiments, the determination method of the water quality value fluctuation index threshold value in the above-mentioned embodiments is described below.

[0092] In a possible embodiment, the washing program includes a main washing time sequence and a rinsing time sequence. The water amount judgment module 202 is configured to determine the water quality value fluctuation index threshold value based on the time sequence currently executed by the dishwasher 100.

[0093] Different washing programs correspond to different water quality value fluctuation index threshold values, for example, the water quality value fluctuation index threshold value corresponding to the main washing time sequence is different from the water quality value fluctuation index threshold value corresponding to the rinsing time sequence. Taking the water quality value as the conductivity as an example, referring to Figure 3 In the main washing time sequence, dishwashing powder is added to the dishwasher, which causes the conductivity of the water in the dishwasher to be usually high (for example, TDS is 4250-5500), and the water quality value fluctuation index threshold value corresponding to the main washing time sequence is determined based on the conductivity in the main washing stage, which is recorded as the first water quality value fluctuation index threshold value. In the rinsing time sequence, the water is discharged after the main washing time sequence is completed, so a large amount of dishwashing powder is discharged with the water, and then the conductivity of the water in the rinsing time sequence 1 is usually lower than that in the main washing stage (for example, TDS is 700-800), and the water quality value fluctuation index threshold value corresponding to the rinsing time sequence 1 is determined based on the conductivity in the rinsing time sequence, which is recorded as the second water quality value fluctuation index threshold value. The first water quality value fluctuation index threshold value and the second water quality value fluctuation index threshold value are usually different. It should be noted that Figure 3 It is only an example diagram of TDS fluctuation, and the proportion of the coordinates is not uniform in order to clearly reflect the above-mentioned content.

[0094] In addition, the rinsing time sequence includes one or more, and in the case that the number of rinsing time sequences is more than one, each rinsing time sequence will take away part of the dishwashing powder, thereby reducing the conductivity of the water, and therefore the water quality value fluctuation index threshold value corresponding to different rinsing time sequences is also different. According to the above-mentioned principle, the water quality value fluctuation index threshold value can be determined according to the time sequence currently executed by the dishwasher.

[0095] In some embodiments, the water amount judgment module 202 is configured to query the first relationship table based on the time sequence currently executed by the dishwasher to obtain the water quality value fluctuation index threshold value.

[0096] The first relationship table stores the corresponding relationship between the washing program and the water quality value fluctuation index threshold, and the first relationship table is set by the technician according to the actual situation, and the embodiment of the utility model does not limit this.

[0097] Another way of determining the water amount in the dishwasher 100 by the water amount determination module 202 will be described below.

[0098] In one possible implementation, the water amount determination module 202 is configured to determine the water amount in the dishwasher 100 based on the plurality of water quality values and the water quality value fluctuation interval.

[0099] For example, the water amount determination module 202 is configured to compare the plurality of water quality values with the water quality value fluctuation interval. The water amount determination module 202 is configured to determine that the water amount in the dishwasher 100 is insufficient when the number of water quality values in the plurality of water quality values that are not in the water quality value fluctuation interval is greater than or equal to a number threshold. The water amount determination module 202 is configured to determine that the water amount in the dishwasher 100 is sufficient when the number of water quality values in the plurality of water quality values that are not in the water quality value fluctuation interval is less than the number threshold.

[0100] The water quality value fluctuation interval is the normal fluctuation interval of the water quality value when the water amount is sufficient. When the water amount in the dishwasher 100 is insufficient, air will be mixed when the water pump 106 is working, and when the water quality sensor contacts air or bubbles, the collected values will fluctuate sharply. For example, when the water quality value is the conductivity, the conductivity will decrease sharply. The number threshold is set by the technician according to the actual situation, and the embodiment of the application does not limit this.

[0101] In order to more clearly illustrate the above-mentioned embodiments, the determination method of the water quality value fluctuation interval in the above-mentioned embodiments will be described below.

[0102] In one possible implementation, the water amount determination module 202 is configured to determine the timing currently executed by the dishwasher 100, and the washing program includes a main washing timing and a rinsing timing. The water quality value fluctuation interval is determined based on the timing currently executed by the dishwasher 100.

[0103] Different washing programs correspond to different water quality value fluctuation intervals, for example, the water quality value fluctuation interval corresponding to the main washing timing is different from the water quality value fluctuation interval corresponding to the rinsing timing. For example, when the water quality value is the conductivity, refer to Figure 3In the main washing sequence, dishwashing powder is added into the dishwasher, resulting in a generally high conductivity of the water in the dishwasher (e.g., TDS of 4250-5500). The water quality value fluctuation range corresponding to the main washing sequence is determined based on the conductivity of the main washing stage, for example, (4250-5500), denoted as a first water quality value fluctuation range. In the first rinsing sequence, the water is drained after the main washing sequence, so a large amount of dishwashing powder is drained with the water. Therefore, the conductivity of the water in the first rinsing sequence is generally lower than that in the main washing stage (e.g., TDS of 700-800). The water quality value fluctuation range corresponding to the first rinsing sequence is determined based on the conductivity of the first rinsing sequence, for example, (700-800), denoted as a second water quality value fluctuation range. The first water quality value fluctuation range and the second water quality value fluctuation range are obviously different.

[0104] The following describes the manner in which the control module 203 controls the washing or rinsing process of the dishwasher 100.

[0105] In one possible implementation, the control module 203 is configured to control the dishwasher 100 to continue washing or rinsing when the water sufficiency condition is water sufficient. The control module 203 is configured to control the dishwasher 100 to replenish water and re-determine the water sufficiency condition of the dishwasher 100 when the water sufficiency condition is water insufficient. The washing or rinsing process of the dishwasher 100 is controlled based on the re-determined water sufficiency condition.

[0106] When the water sufficiency condition is water sufficient, it means that the water quantity in the dishwasher 100 matches the dishes in the dishwasher 100, and the dishwasher 100 can continue washing or rinsing. When the water sufficiency condition is water insufficient, it means that the water quantity in the dishwasher 100 does not match the dishes in the dishwasher 100, and the water quantity is too small to meet the needs of the dishes in the dishwasher 100. Therefore, water needs to be replenished in the dishwasher 100. The water sufficiency condition of the dishwasher 100 is re-determined after the water is replenished, so as to determine whether the water quantity replenished in the dishwasher 100 is sufficient. In some embodiments, when the water sufficiency condition is water insufficient, the control module 203 controls the dishwasher 100 to pause washing or rinsing, so as to avoid damage to the water pump 106. After the water is replenished, the control module 203 controls the dishwasher 100 to continue washing or rinsing, that is, controls the water pump 106 of the dishwasher 100 to continue operating, so as to re-determine the water sufficiency condition.

[0107] In some embodiments, the control module 203 is configured to control the dishwasher 100 to supplement a preset water amount in a case where the water amount sufficient condition is a water amount insufficient condition. A total amount of water in the dishwasher 100 is determined as a sum of the preset water amount and an initial water amount of the dishwasher 100. In a case where the total amount of water in the dishwasher 100 is less than or equal to a water amount threshold and the water amount sufficient condition is re-determined as a water amount sufficient condition, the dishwasher 100 is controlled to continue washing or rinsing. In a case where the total amount of water in the dishwasher 100 is greater than the water amount threshold, the dishwasher 100 is controlled to stop washing or rinsing and trigger a fault alarm.

[0108] The preset water amount is a water amount of a single water supplement of the dishwasher 100, denoted as q, which is set by a technician according to actual conditions. The preset water amount is too small to keep supplementing water, and the preset water amount is too large to supplement too much water at a time, thereby increasing energy consumption of the dishwasher 100. For example, the preset water amount is set to 200 ml, which is not limited in the embodiments of the present application. The initial water amount is a water amount of water entering the dishwasher 100 before the dishwasher 100 starts washing or rinsing, denoted as q0. The total amount of water in the dishwasher 100 is Q=q0+q. The water amount threshold is an overflow protection value for preventing the dishwasher 100 from entering too much water to cause an overflow risk, which is set by a technician according to actual conditions of the dishwasher 100, which is not limited in the embodiments of the present application. In a case where the total amount of water in the dishwasher 100 is less than or equal to the water amount threshold, it indicates that the total amount of water in the dishwasher 100 is within a normal range, and thus the water amount sufficient condition can be determined. In a case where the total amount of water in the dishwasher 100 is greater than the water amount threshold, it indicates that the total amount of water in the dishwasher 100 has exceeded the normal range, and theoretically, there should be no water amount insufficient condition. In this case, the water amount sufficient condition is still a water amount insufficient condition, which indicates that the dishwasher 100 has other faults. For example, in a case where the water amount sufficient condition is determined based on a water quality value, a large fluctuation of the water quality value is not caused by the water amount insufficient condition. In this case, washing or rinsing is stopped to protect the dishwasher 100, and a fault alarm is triggered to remind a user to maintain the dishwasher 100. In some embodiments, triggering the fault alarm includes playing alarm audio and sending alarm information to a terminal bound to the dishwasher 100, which is not limited in the embodiments of the present application.

[0109] In some embodiments, the water amount determining module 202 is further configured to reacquire a plurality of water quality values of the water in the dishwasher 100 at different time points from the water quality sensor 201 after the dishwasher 100 is replenished with the preset water amount. The water amount determining module 202 is further configured to re-determine the water quality value fluctuation index of the dishwasher 100 at different time points based on the reacquired plurality of water quality values. The water amount determining module 202 is further configured to compare the re-determined water quality value fluctuation index with the water quality value fluctuation index threshold in the case that the total amount of the water in the dishwasher 100 is less than or equal to the water amount threshold. The water amount determining module 202 is further configured to determine that the water amount condition of the dishwasher 100 is the water amount insufficient in the case that the re-determined water quality value fluctuation index is greater than the water quality value fluctuation index threshold. The control module 203 is further configured to control the dishwasher 100 to replenish the preset water amount again and update the total amount of the water in the dishwasher 100. The control module 203 is further configured to control the washing or rinsing process of the dishwasher 100 based on the total amount of the water in the dishwasher 100 and the water amount condition re-determined after the water replenishment again.

[0110] In the case that the water amount condition of the dishwasher 100 is the water amount insufficient, there can be more than one water replenishment. In order to save water resources and the heating energy consumption of the dishwasher 100, the water amount is reduced as much as possible under the premise that the water amount in the dishwasher 100 is sufficient.

[0111] The way of determining the water quality value fluctuation index threshold is described below.

[0112] In a possible implementation, referring to Figure 4 The apparatus 400 further comprises a dishware quantity determining module 401 and a threshold determining module 402, and the dishware quantity determining module 401 and the threshold determining module 402 are electrically connected. The dishware quantity determining module 401 is configured to determine the quantity of dishware in the dishwasher 100. The threshold determining module 402 is configured to determine the water quality value fluctuation index threshold based on the quantity of dishware in the dishwasher 100 and the total amount of the water in the dishwasher 100.

[0113] The dishware quantity determining module 401 can determine the quantity of dishware in the dishwasher 100, which does not need to be an accurate quantity, but a rough quantity or an equivalent quantity. The equivalent quantity refers to the quantity of the dishware in the dishwasher 100 replaced by standard dishware. There is a corresponding relationship between the quantity of dishware and the total amount of the water in the dishwasher 100 and the water quality value fluctuation index threshold. The corresponding relationship can be represented by a target relationship data, for example, n sv = ax+by+c, where n svis a coefficient, which is set by a technician according to an actual situation, and embodiments of the present application do not limit this. In some embodiments, the threshold determination module 402 is electrically connected to the water amount determination module 202, and the water amount determination module 202 can obtain the water quality value fluctuation index threshold from the threshold determination module 402.

[0114] The manner in which the dish quantity determination module 401 determines the quantity of dishes in the above embodiments will be described below.

[0115] In some embodiments, the dish quantity determination module 401 includes an image acquisition unit and an image recognition unit, which are electrically connected. The image acquisition unit is configured to acquire images of dishes in the dishwasher 100, and the image recognition unit is configured to obtain the images acquired by the image acquisition unit, perform image recognition on the images, and obtain the quantity of dishes in the dishwasher 100.

[0116] The image recognition unit encapsulates any image recognition algorithm for recognizing the quantity of dishes, and embodiments of the present application do not limit the type of image recognition algorithm.

[0117] In some embodiments, the dish quantity determination module 401 includes a weighing unit and a conversion unit, which are electrically connected. The weighing unit is configured to weigh the dishes in the dishwasher 100 to obtain the mass of the dishes in the dishwasher 100. The conversion unit is configured to obtain the mass of the dishes obtained by the weighing unit, divide the mass of the dishes by the mass of a standard dish, and obtain the quantity of dishes in the dishwasher 100.

[0118] The mass of the standard dish is set by a technician according to an actual situation, and embodiments of the present application do not limit this.

[0119] The control device of the dishwasher 100 provided by embodiments of the present application will be described below in combination with the above various embodiments and Figure 5 The cooperation process between different hardware in the control device of the dishwasher 100 provided by embodiments of the present application will be described below with reference to Figure 5 Before the dishwasher 100 starts washing or rinsing, the control module 203 controls the dishwasher 100 to enter water q0, and q0 is an initial water entry amount. The control module 203 controls the water pump 106 of the dishwasher 100 to operate, that is, controls the dishwasher 100 to start washing or rinsing. The water quality sensor 201 obtains a plurality of water quality values of water in the dishwasher 100 at different times from the water quality sensor 201 when the dishwasher 100 is washing or rinsing. Based on the plurality of water quality values, the water quality value fluctuation index n of the dishwasher 100 at different times is determined. When the water quality value fluctuation index n is less than or equal to the water quality value fluctuation index threshold n svIn the case that the water quality value fluctuation index is greater than the water quality value fluctuation index threshold value at any time, the water amount judgment module 202 determines the water quality value fluctuation index n at the time and the N continuous times after the time. In the case that the water quality value fluctuation index of M times among the N continuous times is less than or equal to the water quality value fluctuation index threshold value, the water amount sufficient condition of the dishwasher 100 is determined as water sufficient. The control module 203 controls the dishwasher 100 to perform washing or rinsing. In the case that the water quality value fluctuation index of the N continuous times is greater than the water quality value fluctuation index threshold value, the water amount sufficient condition of the dishwasher 100 is determined as water insufficient. In the case that the water amount sufficient condition is determined as water insufficient, the control module 203 controls the dishwasher 100 to supplement the preset water amount q. The control module 203 determines the total amount Q of water in the dishwasher 100 as Q=q+q0. In the case that the total amount Q of water is less than or equal to the water amount threshold value Q sv , it is indicated that the water amount of the dishwasher 100 is normal, and the water amount sufficient condition in the dishwasher 100 can be determined continuously. In the case that the total amount Q of water is greater than the water amount threshold value Q sv , it is indicated that the water amount of the dishwasher 100 is abnormal, and the control module 203 triggers a fault alarm.

[0120] All the optional technical solutions can be combined to form optional embodiments of the present application, which will not be described here.

[0121] The water quality sensor 201 is arranged in the dishwasher 100 to obtain the water quality value of water in the dishwasher 100. The water amount judgment module 202 is arranged to determine the water amount sufficient condition in the dishwasher 100 by using the water quality value. The control module is arranged to control the washing or rinsing process of the dishwasher 100 according to the water amount sufficient condition, so that the washing or rinsing process can be matched with the water amount in the dishwasher 100, thereby avoiding the problem of excessively high noise caused by insufficient water inflow during the washing or rinsing process of the dishwasher 100.

[0122] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0123] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an ordered ranking of the indicated technical features. Thus, features defined with "first", "second" or "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0124] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0125] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0126] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0127] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and deformations to the above embodiments within the scope of the present application.

Claims

1. A control device of a dishwasher, characterized in that, The device comprises: a water quality sensor (201) arranged in the interior of the dishwasher and configured to acquire a water quality value of water in the dishwasher; a water quantity determination module (202) electrically connected to the water quality sensor (201) and configured to acquire a plurality of water quality values of water in the dishwasher at different time instants from the water quality sensor (201) when the dishwasher is performing washing or rinsing, and determine a water quantity sufficiency condition of water in the dishwasher based on the plurality of water quality values, the water quantity sufficiency condition being used to indicate whether the water quantity is sufficient; a control module (203) electrically connected to the water quantity determination module (202) and configured to acquire the water quantity sufficiency condition from the water quantity determination module (202), and control the washing or rinsing process of the dishwasher based on the water quantity sufficiency condition.

2. The apparatus of claim 1, wherein, The water quality sensor (201) is a turbidity sensor, and the water quality sensor (201) is configured to acquire turbidity of water in the dishwasher. Alternatively, the water quality sensor (201) is a conductivity sensor, and the water quality sensor (201) is configured to acquire conductivity of water in the dishwasher. Alternatively, the water quality sensor (201) comprises a light absorption parameter determination unit and a pollution index determination unit, the light absorption parameter determination unit is configured to acquire a light absorption parameter, the light absorption parameter being used to indicate an absorption degree of water in the dishwasher to light of different wavelengths, and the pollution index determination unit is configured to determine a pollution index of water in the dishwasher based on the light absorption parameter, the pollution index being used to indicate how much pollution.

3. The apparatus of claim 1, wherein, When the dishwasher is in a water filling stage of a washing program, the water quality sensor (201) acquires a water quality value of water in the dishwasher, and the washing program comprises a main washing timing and a rinsing timing.

4. The apparatus of claim 1, wherein, The water quantity determination module (202) is configured to determine a water quality value fluctuation index of water in the dishwasher at different time instants based on the plurality of water quality values, the water quality value fluctuation index being used to indicate a fluctuation condition of the water quality value. The water quantity determination module (202) is configured to determine the water quantity sufficiency condition of water in the dishwasher based on the water quality value fluctuation index of water in the dishwasher at different time instants.

5. The apparatus of claim 4, wherein, The water quantity determination module (202) is configured to subtract each water quality value from a water quality value at a previous time instant to obtain the water quality value fluctuation index of water in the dishwasher at different time instants. Alternatively, the water quantity determination module (202) is configured to subtract each water quality value from an average water quality value of the plurality of water quality values to obtain the water quality value fluctuation index of water in the dishwasher at different time instants.

6. The apparatus of claim 4, wherein, The water quantity determination module (202) is configured to compare the water quality value fluctuation index at different time instants with a water quality value fluctuation index threshold value. The water quantity determination module (202) is configured to determine that the water quantity sufficiency condition of the dishwasher is water quantity sufficient in a case where the water quality value fluctuation index is less than or equal to the water quality value fluctuation index threshold value, and determine that the water quantity sufficiency condition of the dishwasher is water quantity insufficient in a case where the water quality value fluctuation index at any time instant is greater than the water quality value fluctuation index threshold value, and the water quality value fluctuation index at N consecutive time instants after the time instant is all greater than the water quality value fluctuation index threshold value, N being a positive integer.

7. The apparatus of claim 6, wherein, The washing procedure comprises a main washing timing and a rinsing timing; the water quality value fluctuation index threshold is determined based on a timing currently executed by the dishwasher.

8. The apparatus of claim 1, wherein, The control module (203) is configured to control the dishwasher to continue washing or rinsing when the water sufficiency condition is water sufficiency. The control module (203) is configured to control the dishwasher to replenish water and re-determine the water sufficiency condition of the dishwasher when the water sufficiency condition is water insufficiency; and control the washing or rinsing process of the dishwasher based on the re-determined water sufficiency condition.

9. The apparatus of claim 7, wherein, The control module (203) is configured to control the dishwasher to replenish a preset amount of water when the water sufficiency condition is water insufficiency; determine a total amount of water in the dishwasher as a sum of the preset amount of water and an initial amount of water in the dishwasher; and control the dishwasher to continue washing or rinsing when the total amount of water in the dishwasher is less than or equal to a water threshold and the re-determined water sufficiency condition is water sufficiency. The control module (203) is configured to control the dishwasher to stop washing or rinsing and trigger a fault alarm when the total amount of water in the dishwasher is greater than the water threshold.

10. The apparatus of claim 9, wherein, The water quantity determination module (202) is further configured to re-acquire a plurality of water quality values of water in the dishwasher at different time points from the water quality sensor (201) after the dishwasher replenishes the preset amount of water. The water quantity determination module (202) is further configured to re-determine water quality value fluctuation indexes of the dishwasher at different time points based on the re-acquired plurality of water quality values. The water quantity determination module (202) is further configured to compare the re-determined water quality value fluctuation index with a water quality value fluctuation index threshold when the total amount of water in the dishwasher is less than or equal to a water threshold. The water quantity determination module (202) is further configured to determine that the water sufficiency condition of the dishwasher is water insufficiency when the re-determined water quality value fluctuation index is greater than the water quality value fluctuation index threshold. The control module (203) is further configured to control the dishwasher to replenish the preset amount of water again and update the total amount of water in the dishwasher. The control module (203) is further configured to control the washing or rinsing process of the dishwasher based on the total amount of water in the dishwasher and the re-determined water sufficiency condition after replenishing water again.

11. A dishwasher, characterized in that A control device of a dishwasher as claimed in any one of claims 1 to 10.

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