A control method of a washing apparatus and a washing apparatus

Abstract

The application discloses a control method of a washing device and the washing device. The washing device comprises a plurality of washing stages. In a washing process, a previous washing agent feeding amount is acquired, a subsequent washing agent feeding amount corresponding to the acquired previous washing agent feeding amount is selected, and the washing agent is fed in a subsequent washing stage according to the selected subsequent washing agent feeding amount. In the application, a large amount of washing agent remains in the washing object after the washing agent is fed in the previous washing stage. The washing agent can continue to play a washing role in the subsequent washing stage. The washing agent feeding amount in the subsequent washing stage is selected according to the feeding amount in the previous washing stage, which is substantially selected according to the washing agent residual amount in the previous washing stage. The residual washing agent in the washing object can be effectively utilized to participate in the washing, so that the washing agent can be saved, and the washing object can be easily rinsed clean.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of household appliances, in particular, relates to a control method of a washing device and the washing device. BACKGROUND

[0002] The washing device refers to a device for washing washing objects, such as a washing machine, a washing and drying integrated machine, etc.

[0003] When the washing device executes a washing program, a detergent needs to be added to improve the cleanliness and washing efficiency of the washing objects. Initially, a manual detergent adding method is adopted, and the user determines the adding amount of the detergent. The user often uses a visual method to determine the adding amount, which increases the workload of the user and has a large error.

[0004] Now many washing devices are configured with an automatic detergent adding device. A certain amount of detergent is pre-stored in the washing device, and then a predetermined amount of detergent is added at a preset time according to a preset control method.

[0005] The adding amount of the detergent each time needs to be determined according to the weight, material and turbidity of the washing water after soaking of the washing objects, and the corresponding preset detergent adding amount is compared. However, because the surfactant in the detergent is adsorbed on the washing objects, it will hinder the contact between the surfactant in the water and the washing objects, so that the added detergent cannot fully play a role. Many detergents are directly discharged with the washing water when draining before they play a role, which not only causes waste, but also cannot effectively clean the washing objects.

[0006] In view of this situation, the Chinese invention patent with the application number CN201810315460.1 discloses a washing machine control method and a washing machine. A preset number of washing times N is obtained, and the detergent adding amount is determined according to the weight and / or material and / or dirtiness of the washing objects. Each washing is performed by washing and draining, and then re-adding water after draining. The detergent needs to be added again during each washing process. The amount of detergent added each time is 1 / N of the detergent adding amount.

[0007] This way only adds a small amount of detergent each time, reducing the waste caused by the adsorption of the detergent on the surface of the washing objects. However, this scheme does not accurately control the detergent added each time, which still causes waste or poor washing.

[0008] Therefore, the present application is proposed. SUMMARY

[0009] The present application proposes a control method of a washing device and the washing device, aiming to accurately control the detergent adding amount of each stage during the stage-by-stage washing, and avoiding the waste of the detergent.

[0010] To solve the above technical problems, the basic idea of the technical scheme of the present application is:

[0011] A control method of a washing device, the washing device comprising a plurality of washing stages, in a washing process, obtaining a detergent dosage of a previous washing stage, selecting a detergent dosage of a subsequent washing stage corresponding to the obtained detergent dosage of the previous washing stage, and controlling the detergent dosage of the subsequent washing stage according to the selected detergent dosage.

[0012] Further, the detergent dosage L=K n *M, wherein M is a theoretical detergent dosage corresponding to the current washing stage, K n is a dosage coefficient, and the dosage coefficient K n后 of the subsequent washing stage is controlled to be in a negative correlation with the dosage coefficient K n先 of the previous washing stage.

[0013] Further, the adsorption force H of the washing material in the washing device to the detergent is obtained, and the dosage coefficient K n后 of the subsequent washing stage is controlled to be in a negative correlation with the obtained adsorption force.

[0014] Further, the adsorption force of the washing material to the detergent comprises:

[0015] After a single washing stage ends, the washing device is controlled to drain water and then to re-charge water, after the re-charge of water, the concentration Q of the detergent in the washing water is obtained, and the obtained concentration Q is taken as the adsorption force of the washing material to the detergent.

[0016] Further, the adsorption force H' of the washing material in the washing device to the detergent is preset, and the size of the obtained adsorption force H and the preset adsorption force H' of the washing material to the detergent is judged, if H≥H', the subsequent washing stage is controlled not to dose the detergent.

[0017] Further, the turbidity value T x of the washing water in the previous washing stage and the turbidity value T y of the washing water in the current washing stage are controlled to be obtained, the turbidity ratio S=T y / T x is calculated, and the dosage coefficient K n后 of the subsequent washing stage is controlled to be in a positive correlation with the turbidity ratio S.

[0018] Further, the turbidity ratio S' is preset, the size of the calculated turbidity ratio S and the preset turbidity ratio S' is compared, if S≥S', the subsequent washing stage is controlled to dose the detergent equal to or greater than the theoretical detergent dosage, the adsorption force of the washing material in the washing device to the detergent is obtained, and the dosage times of the detergent is controlled to be in a positive correlation with the obtained adsorption force.

[0019] Further, the concentration Q' of the detergent in the washing water in the later washing stage and the theoretical detergent dosage M of the washing stage are obtained, and the theoretical detergent dosage M and the obtained concentration Q' of the detergent are compared, if Q' ≥ M, the control is not to add the detergent in the later washing stage.

[0020] A washing apparatus controlled by the control method.

[0021] After the above technical solutions are adopted, the present application has the following beneficial effects compared with the prior art.

[0022] 1. The washing apparatus includes several washing stages, and the detergent dosage in the later washing stage is determined according to the detergent dosage in the previous washing stage. After the detergent is added in the previous washing stage, a large amount of detergent remains in the washing object, and the detergent can continue to play a washing role in the later washing stage. The control of selecting the detergent dosage in the later washing stage according to the detergent dosage in the previous washing stage is essentially to select the detergent dosage in the later washing stage according to the detergent residue in the previous washing stage.

[0023] The washing apparatus includes several washing stages, and the first washing stage only needs to complete part of the washing work, so the theoretical detergent dosage is not needed to be added, but only part of the theoretical detergent dosage is needed to be added. The detergent dosage L = K n *M of each washing stage is obtained by calculation, and the adding coefficient K n后 of the later washing stage is controlled to be negatively correlated with the adding coefficient K n先 of the previous washing stage, the adding coefficient K n先 of the previous washing stage is larger, the more detergent remains in the washing object, and the less detergent needs to be additionally added in the later washing stage. In this way, not only the amount of the detergent can be effectively saved, but also the detergent residue in the washing object after the washing can be reduced, so that the washing object is easier to be rinsed clean.

[0024] The adding coefficient K n后 of the later washing stage is controlled to be negatively correlated with the adding coefficient K n先 of the previous washing stage, the adding coefficient K n先 of the previous washing stage is smaller, the less detergent remains in the washing object, and the more detergent needs to be additionally added in the later washing stage. The control of increasing the adding coefficient K n后 of the later washing stage can improve the washing effect in the later washing stage and avoid invalid washing and waste of water and electricity.

[0025] 2. When the washing is in progress, part of the detergent will be adsorbed on the surface of the washing, and the detergent adsorbed on the surface of the washing will block the free detergent in the water from contacting the washing, so that only part of the detergent can actually be used each time, and the rest of the detergent does not participate in the cleaning of the washing, resulting in waste of the detergent.

[0026] Different washings have different adsorption forces on the detergent, and for the washing with strong adsorption force, less detergent can actually participate in the cleaning of the washing in each washing stage, and the delivery coefficient K in each washing stage is controlled to be reduced n to avoid waste of the detergent; and for the washing with weak adsorption force, more detergent can actually participate in the cleaning of the washing in each washing stage, and the delivery coefficient K in each washing stage is controlled to be increased n , so that the washing can be cleaned faster and time is saved.

[0027] 3. The washing equipment adopts the control method of the application, the washing equipment includes a plurality of washing stages, the control selects the detergent delivery amount of a previous washing stage corresponding to the detergent delivery amount of a subsequent washing stage, the detergent delivery amount of each subsequent washing stage is accurately controlled, and the detergent is effectively saved.

[0028] The specific embodiments of the application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the application, and the illustrative embodiments of the application and their descriptions serve to explain the application, but do not constitute an improper limitation on the application. Obviously, the accompanying drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings. In the drawings:

[0030] Figure 1 is a control method of the washing equipment of the application;

[0031] Figure 2 is another control method of the washing equipment of the application;

[0032] Figure 3 is another control method of the washing equipment of the application;

[0033] Figure 4 is another control method of the washing equipment of the application.

[0034] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the application in any way, but to illustrate the concept of the application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments with reference to the drawings in the embodiments of the present application. The following embodiments are used to explain the present application but not to limit the scope of the present application.

[0036] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" 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 do not indicate or imply 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 a limitation on the present application.

[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. 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.

[0038] The washing equipment refers to the equipment for washing the washing objects, for example: washing machine, washing and drying integrated machine and the like. The washing equipment includes a barrel for containing the washing objects and a washing agent feeding device for feeding the washing agent into the barrel.

[0039] The present application provides a control method of a washing equipment as shown in Figures 1 to 4 .

[0040] As shown in Figure 1 , as an embodiment of the present application, the washing equipment includes a plurality of washing stages, which include a first washing stage, a second washing stage,..., and an n-th washing stage executed in sequence. For example, an original washing program is set to two washing stages or three washing stages, and the duration of each washing stage can be the same or different.

[0041] Draining and then feeding water are required between each washing stage, and the washing agent feeding amount in the subsequent washing stage is selected according to the washing agent feeding amount in the previous washing stage. The specific control method of the subsequent washing agent feeding amount is as follows:

[0042] S1: start;

[0043] S2: preset the washing equipment to include N washing stages;

[0044] S3: presetting the detergent dosage of the subsequent washing stage corresponding to the detergent dosage of the previous washing stage;

[0045] S4: controlling water feeding into the barrel of the washing apparatus;

[0046] S5: judging whether the current washing stage is the first washing stage, if yes, executing S6, otherwise executing S11;

[0047] S6: controlling the detergent dosage, and naming the detergent dosage of the previous washing stage;

[0048] S7: controlling the execution of the current washing stage;

[0049] S8: controlling the drainage of the washing apparatus;

[0050] S9: obtaining the number n of the completed washing stages;

[0051] S10: judging whether n is greater than or equal to N, if yes, executing S4, otherwise executing S13;

[0052] S11: obtaining the detergent dosage of the previous washing stage, and selecting the detergent dosage of the subsequent washing stage corresponding to the detergent dosage of the previous washing stage;

[0053] S12: controlling the detergent dosage of the subsequent washing stage, and recording the detergent dosage of the previous washing stage, and executing S7;

[0054] S13: ending the washing.

[0055] Preferably, N=2.

[0056] In the present application, one washing is divided into several washing stages, and the detergent dosage of the subsequent washing stage corresponding to the obtained detergent dosage of the previous washing stage is selected, and the residual detergent in the washing object after the previous washing stage is calculated into the number of the detergent actually participating in the washing in the subsequent washing stage, so that the detergent dosage of the subsequent washing stage is more accurate, and the waste caused by the excessive detergent dosage is avoided.

[0057] As shown in Figure 2 , as another embodiment of the present application, the method for controlling the detergent dosage of the subsequent washing stage is as follows:

[0058] S1: starting;

[0059] S2: presetting that the washing apparatus includes N washing stages;

[0060] S3: presetting the dosage coefficient K n先 of the subsequent washing stage corresponding to the dosage coefficient K n后 of the previous washing stage;

[0061] S4: Preset the theoretical detergent dosage corresponding to the turbidity of the washing water;

[0062] S5: Controls the flow of water into the washing equipment tub;

[0063] S6: Obtain the turbidity of the washing water;

[0064] S7: Determine if the current washing stage is the first washing stage. If yes, execute S8; otherwise, execute S13.

[0065] S8: Control the amount of detergent added and name it as the amount of detergent added in the initial washing stage;

[0066] S9: Controls the execution of the current washing stage;

[0067] S10: Controls the drainage of the washing equipment;

[0068] S11: Get the number of washing stages that have been completed, n;

[0069] S12: Determine if n is greater than or equal to N. If yes, execute S20; otherwise, execute S5.

[0070] S13: Obtain the turbidity of the wash water in the previous washing stage;

[0071] S14: Select the theoretical detergent dosage for the preceding washing stage, which corresponds to the turbidity of the washing water in the preceding washing stage.

[0072] S15: Calculate the loading coefficient K in the pre-washing stage. n先 = Detergent dosage in the pre-washing stage / Theoretical detergent dosage in the pre-washing stage;

[0073] S16: Based on the calculated K n先 Select the dosage coefficient K in the post-washing stage n后 ;

[0074] S17: Select the theoretical detergent dosage in the post-washing stage;

[0075] S18: Calculate the detergent dosage in the post-wash stage = theoretical detergent dosage in the post-wash stage * K n后 ;

[0076] S19: Control the amount of detergent added according to the amount added in the later washing stage, and record it as the amount of detergent added in the earlier washing stage. Execute S9.

[0077] S20: End of wash.

[0078] Preferably, 0.5 ≤ K n后 ≤0.8.

[0079] The detergent added to S8 was selected based on factors such as the turbidity, temperature, and conductivity of the washing water, and the amount added this time was less than the theoretical amount of detergent.

[0080] Controlling the selected addition coefficient K in the post-washing stage n后 The loading coefficient K in the pre-washing stage n先 They are negatively correlated.

[0081] The method for obtaining the detergent dosage in the pre-washing stage includes: when detergent is added in the pre-washing stage, the control system stores the pre-washing detergent dosage data in the control system of the washing equipment; when it is necessary to obtain the detergent dosage in the pre-washing stage, the control system retrieves the detergent dosage data stored in the pre-washing stage to obtain the detergent dosage in the pre-washing stage.

[0082] The theoretical detergent dosage refers to the amount of detergent to be added when the washing equipment includes only one washing stage, under the corresponding turbidity of the washing water. Adding detergent according to the theoretical detergent dosage can clean the laundry even when only one washing stage is included.

[0083] In this embodiment, the detergent dosage L=K for each washing stage is calculated. n *M, controls the dispensing coefficient K corresponding to the post-washing stage. n后 The loading coefficient K in the pre-washing stage n先 There is a negative correlation between the dosage coefficient K in the pre-washing stage and the dosage coefficient K. n先 The larger the size of the detergent, the more detergent remains in the laundry, and the less detergent needs to be added in the later washing stages. This not only effectively saves detergent but also reduces the amount of detergent residue after the final wash, making the laundry easier to rinse clean.

[0084] Controlling the dispensing coefficient K corresponding to the post-washing stage n后 The loading coefficient K in the pre-washing stage n先 There is a negative correlation between the dosage coefficient K in the pre-washing stage and the dosage coefficient K. n先 The smaller the value, the less detergent remains in the laundry, and the more detergent needs to be added in the later washing stage. Therefore, it's important to control the increase in the detergent addition coefficient K in the later washing stage. n后 This can improve the washing effect in the later washing stage, avoid ineffective washing, and prevent waste of water and electricity.

[0085] As one implementation of this embodiment, in order to obtain the turbidity of the washing water described in this embodiment, S6 includes:

[0086] S61: Control the acquisition of the baseline turbidity T of the washing water;

[0087] S62: Preset soaking time;

[0088] S63: Control the acquisition of turbidity T' in the washing water;

[0089] S64: Calculate the turbidity of the washing water ΔT = T' - T;

[0090] In this embodiment, the baseline turbidity T of the washing water and the turbidity T' after soaking are obtained. The turbidity ΔT is obtained by subtraction. The baseline turbidity T obtained before soaking is the turbidity inherent in the washing water itself, and the turbidity T' obtained after soaking is the sum of the turbidity of the washing water itself and the turbidity of the detergent dissolved during soaking.

[0091] The turbidity value ΔT obtained by subtracting the baseline turbidity T from the turbidity T' of the washing water represents the turbidity of the soaked and dissolved laundry. This value accurately reflects the degree of dirtiness of the laundry, allowing for the selection of a more accurate amount of detergent. This avoids the influence of the turbidity of the washing water itself, which could lead to an excessive amount of detergent being used and thus prevents detergent waste.

[0092] like Figure 3 As shown, in another embodiment of the present invention, the adsorption force of the laundry to be washed on the detergent in the washing equipment is obtained, and the dosing coefficient K is controlled in the post-washing stage. n后 It is negatively correlated with the adsorption force obtained.

[0093] The specific method is as follows:

[0094] S1: Beginning;

[0095] S2: The preset washing equipment includes N washing stages;

[0096] S3: Preset the dosage coefficient for the subsequent washing stage, which corresponds to the dosage coefficient in the earlier washing stage.

[0097] S4: Preset the theoretical detergent dosage corresponding to the turbidity of the washing water;

[0098] S5: Controls the flow of water into the washing equipment tub;

[0099] S6: Obtain the turbidity of the washing water;

[0100] S7: Determine if the current washing stage is the first washing stage. If yes, execute S8; otherwise, execute S13.

[0101] S8: Control the amount of detergent added and name it as the amount of detergent added in the initial washing stage;

[0102] S9: Controls the execution of the current washing stage;

[0103] S10: Controls the drainage of the washing equipment;

[0104] S11: Get the number of washing stages that have been completed, n;

[0105] S12: Determine if n is greater than or equal to N. If yes, execute S20; otherwise, execute S5.

[0106] S13: Obtain the turbidity of the wash water in the previous washing stage;

[0107] S14: Select the theoretical detergent dosage for the preceding washing stage, which corresponds to the turbidity of the washing water in the preceding washing stage.

[0108] S15: Calculate the loading coefficient K in the pre-washing stage. n先 = Detergent dosage in the initial washing stage / Theoretical detergent dosage in the initial washing stage;

[0109] S16: Based on the calculated K n先 Select the dosage coefficient K in the post-washing stage n后 ;

[0110] S17: Obtain the adsorption force of detergent on the items to be washed inside the washing equipment;

[0111] S18: Adjust the dosing coefficient K in the post-washing stage according to the negative correlation between the detergent adsorption capacity of the laundry in the washing equipment and the detergent adsorption capacity. n后 ;

[0112] S19: Select the theoretical detergent dosage in the post-washing stage;

[0113] S20: Calculate the detergent dosage in the post-wash stage = Theoretical detergent dosage in the post-wash stage * K n后 ;

[0114] S21: Control the amount of detergent added according to the amount added in the later washing stage, and record it as the amount of detergent added in the earlier washing stage, and execute S9;

[0115] S22: End of wash.

[0116] The detergent adsorption capacity refers to the adsorption of detergent onto the surface of the garment, or more precisely, the adsorption of surfactants from the detergent onto the garment. Surfactants are components of detergents that adsorb onto the surface of the garment during washing, preventing residual surfactants dissolved in the wash water from contacting the garment. Different types of garments exhibit varying degrees of surfactant adsorption capacity.

[0117] In this embodiment, the amount of detergent added in the post-washing stage is negatively correlated with the detergent adsorption capacity of the laundry. If the detergent adsorption capacity of the laundry is strong and a large amount of detergent is adsorbed on the surface of the laundry, the addition coefficient K in the post-washing stage is reduced. n后 To reduce the amount of detergent in the wash water that cannot reach the clothes, thus avoiding detergent waste. If the detergent adsorption capacity of the clothes is weak, and the amount of detergent adsorbed on the surface of the clothes is small, then the dosage coefficient K in the later washing stage should be increased. n后 This increases the amount of detergent that can come into contact with the laundry in a single washing stage, improving the washing effect of a washing stage and completing the washing process faster.

[0118] As one implementation method of this embodiment, obtaining the adsorption force of the detergent on the object to be washed in the washing equipment includes: after the pre-washing stage is completed, controlling the washing equipment to drain water and then adding water into the tub. After the water is added, the detergent concentration Q in the washing water is obtained, and this detergent concentration Q is used to characterize the adsorption force of the detergent on the object to be washed.

[0119] The higher the detergent concentration Q, the stronger the detergent adsorption capacity on the washed items.

[0120] Furthermore, a surfactant sensor is installed in the lower part of the washing equipment tub to calculate the detergent concentration by detecting the surfactant concentration.

[0121] In this embodiment, after the initial washing stage is completed, water is introduced after drainage is controlled. The incoming water flow washes the detergent adsorbed on the surface of the laundry into the washing water. Since the detergent and dirt in the laundry have not yet dissolved into the washing water, the detergent concentration in the washing water in the tub at this time can characterize the adsorption capacity of the laundry surface for detergent.

[0122] As another implementation of this embodiment, obtaining the adsorption force of the detergent on the object to be washed in the washing equipment includes: controlling and obtaining the turbidity of the washing water in the washing equipment tub after water is introduced, and using the turbidity of the washing water at this time to characterize the concentration Q of the detergent in the washing water.

[0123] In this embodiment, after the washing water is introduced, the dirt in the laundry has not yet dissolved into the washing water. At this time, the turbidity of the washing water mainly comes from the detergent adsorbed on the surface of the laundry. Therefore, the turbidity of the washing water at this time can be used to characterize the detergent concentration.

[0124] As another implementation of this embodiment, obtaining the adsorption force of the detergent on the object to be washed in the washing device includes: pre-storing detergent adsorption capacity data corresponding to different materials in the washing device, controlling the acquisition of the material to be washed, and then selecting the corresponding adsorption capacity data from the preset detergent adsorption capacity data corresponding to different materials.

[0125] The acquisition of the material of the laundry includes: obtaining it by retrieving the material information of the laundry manually input by the user; or obtaining the material information of the laundry by collecting images of the laundry through image collection devices (such as cameras) and obtaining the material information of the laundry through intelligent analysis.

[0126] In this embodiment, the material information of the laundry is obtained through multiple methods, and then the corresponding detergent adsorption capacity data is accurately obtained from the pre-stored detergent adsorption capacity data based on the material information of the laundry, with high accuracy.

[0127] As another implementation of this embodiment, the method for controlling the amount of detergent added in the post-washing stage is as follows:

[0128] S17 of this embodiment includes:

[0129] S171: Preset detergent adsorption capacity H' for clothes to be washed in the washing equipment;

[0130] S172: Obtain the adsorption force H of the detergent on the items to be washed inside the washing equipment;

[0131] S173: Determine the magnitude of the obtained detergent adsorption force H and the preset detergent adsorption force H'. If H≥H', then execute S174; otherwise, execute S18.

[0132] S174: Do not add detergent during the post-washing stage.

[0133] In this embodiment, when H≥H', it indicates that the detergent adsorption of the item to be washed is too strong, and it is difficult for additional detergent added in the later washing stage to actually participate in the washing. Controlling the addition of detergent in the later washing stage and relying only on the detergent remaining in the earlier washing stage can effectively avoid detergent waste. When H<H', it indicates that adding additional detergent in the later washing stage can allow it to come into contact with the item to be washed. Controlling the addition of detergent in the later washing stage is beneficial to improving the washing effect in the later washing stage.

[0134] In one embodiment of this invention, a turbidity sensor is installed in the lower part of the washing equipment tub to detect the turbidity of the washing water, thereby controlling the acquisition of the turbidity value T of the washing water before the start of the pre-washing stage. x And the turbidity value T before the start of the post-washing stage y Calculate the turbidity ratio S=T y / T x The dosage coefficient K is controlled in the post-washing stage. n后 It is positively correlated with the turbidity ratio S.

[0135] Furthermore, the turbidity value T x and T y All samples were obtained after soaking in water for a preset time.

[0136] In this embodiment, the turbidity T of the wash water prior to the initial washing stage is selected. x And the current turbidity T of the wash water y The ratio S can be used to illustrate the washing effect of the turbidity of the wash water after the initial washing stage. A higher turbidity ratio (S) indicates more dirt remaining in the laundry after the initial washing stage, suggesting that the laundry is more difficult to clean and the dirt is more stubborn. Controlling the addition of the additive coefficient K in the later washing stage can help. n后 Enlarging the size ensures that the laundry can be thoroughly cleaned.

[0137] After the initial washing stage, a lower turbidity ratio (S) indicates less residual dirt in the laundry, suggesting a lower difficulty in cleaning the laundry. Controlling and reducing the feed conversion factor (K) in the subsequent washing stage is also important. n后 This method can save detergent while ensuring effective cleaning.

[0138] In obtaining the turbidity value T x and T y Previously, soaking laundry for a preset time allowed sufficient time for dirt to dissolve, and the resulting turbidity value T was obtained during this process. x and T y It can more accurately assess the degree of soiling of laundry.

[0139] Furthermore, a preset turbidity ratio S' is set, and the calculated turbidity ratio S is compared with the preset turbidity ratio S'. If S ≥ S', the amount of detergent added in the later washing stage is controlled to be greater than or equal to the theoretical amount of detergent added; if S is less than S', the amount of detergent added in the later washing stage is controlled to be less than the theoretical amount of detergent added.

[0140] In this embodiment, if the calculated turbidity ratio S is greater than or equal to the preset turbidity ratio S', it indicates that the dirt on the item to be washed is difficult to clean. Therefore, the amount of detergent added is controlled to be greater than or equal to the theoretical amount to ensure the item is cleaned. If the calculated turbidity ratio S is less than the preset turbidity ratio S', it indicates that the item is relatively easy to clean. Therefore, the amount of detergent added is controlled to be less than the theoretical amount to save detergent.

[0141] As another implementation of this embodiment, the detergent adsorption capacity of the clothes to be washed is obtained, and the number of times the detergent is added is positively correlated with the detergent adsorption capacity of the clothes to be washed in the washing equipment, and the detergent is added only once in each washing stage.

[0142] Furthermore, the number of times the detergent is added can be adjusted after obtaining the detergent adsorption capacity of the laundry.

[0143] Preferably, the number of detergent applications is adjusted only after the detergent adsorption capacity of the washed items has been obtained for the first time.

[0144] In this embodiment, the number of times detergent is added is positively correlated with the detergent adsorption capacity of the laundry. If the detergent adsorption capacity of the laundry is strong, the washing effect of a single detergent addition decreases, so the number of detergent additions is increased to ultimately achieve a better washing effect. If the detergent adsorption capacity of the laundry is weak, the washing effect of a single detergent addition is good, so the number of detergent additions is reduced to avoid repeated water changes and save water.

[0145] As another embodiment of this invention, the method for controlling the discharge of detergent adsorbed on the surface of the laundry during the pre-washing stage is as follows:

[0146] S17 in this embodiment includes:

[0147] S171: Obtain the adsorption force of detergent on the items to be washed inside the washing equipment;

[0148] S172: After water inflow time t, control to stop drainage.

[0149] In this embodiment, after water intake begins, drainage time t is maintained. Water intake is controlled after the washing water from the initial washing stage is discharged. The washing water sprayed downwards from above the washing equipment drum washes away the detergent adsorbed on the surface of the laundry, preventing the detergent adsorbed on the laundry in the initial washing stage from adversely affecting the subsequent washing stage. This effectively improves the utilization rate of detergent in the subsequent washing stage and avoids detergent waste.

[0150] like Figure 4 As shown, in another embodiment of this invention, the method for controlling the amount of detergent added in the post-washing stage is as follows:

[0151] S19 in this embodiment includes:

[0152] S191: Preset soaking time;

[0153] S192: Obtain the detergent concentration Q' in the washing water;

[0154] S193: Select the theoretical detergent dosage M in the post-washing stage;

[0155] S194: Compare the theoretical detergent dosage M with the obtained detergent concentration Q'. If M≤Q', then execute S195; otherwise, execute S20.

[0156] S195: Control the amount of detergent added after the process to be zero, then execute S9;

[0157] In this embodiment, when M≤Q', it means that the detergent residue in the laundry is sufficient to complete the washing work in the subsequent washing stage, and there is no need to add detergent to the washing water again, thus avoiding waste of detergent and making the laundry easier to rinse clean; when M>Q', it means that the detergent residue in the laundry is insufficient to meet the washing work in the subsequent washing stage, and detergent still needs to be added to the washing water to meet the washing needs.

[0158] This invention also proposes a washing device controlled by the control method of this invention. The washing device refers to equipment used to wash laundry, such as washing machines and washer-dryer combos.

[0159] The washing equipment includes a tub for holding laundry and a detergent dispensing device connected to the tub, as well as a control system for controlling the washing and detergent dispensing of the washing equipment.

[0160] This washing equipment can automatically control the amount of detergent added at each washing stage, which can both clean the clothes and save detergent as much as possible.

[0161] In one embodiment of the present invention, the washing device further includes a water inlet pipe and a drain pipe respectively connected to the tub body. The connection point between the water inlet pipe and the tub body is located at the upper part of the tub body, and the connection point between the drain pipe and the tub body is located at the lower part of the tub body. A turbidity sensor and a detergent concentration sensor are installed in the lower part of the tub body.

[0162] Furthermore, the sensor capable of detecting detergent concentration is a surfactant sensor.

[0163] In this embodiment, the washing equipment can discharge the washing water from the first washing stage through the drain pipe, and then introduce water into the tub through the water inlet pipe connected to the upper part of the tub. The water flow washes away the detergent adsorbed on the surface of the laundry and discharges it directly from the drain pipe, thus avoiding the influence of this detergent on the next washing stage.

[0164] During this process, the sensor located at the bottom of the tub can detect the detergent concentration in the water flow after rinsing the laundry, and then infer the adsorption force of the laundry on the detergent, thereby accurately controlling the amount of detergent added in the later washing stage.

[0165] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A control method for a washing device, the washing device comprising several washing stages, characterized in that: During the washing process, the detergent dosage in the first washing stage is obtained, and the detergent dosage in the subsequent washing stage corresponding to the obtained detergent dosage in the first washing stage is selected, so as to control the detergent dosage in the subsequent washing stage to be added according to the selected detergent dosage. The amount of detergent to be added is L=K n *M, where M is the theoretical detergent dosage for the current washing stage, and K n The dosage coefficient K is used to control the dosage coefficient K in the post-washing stage. n后 The loading coefficient K in the pre-washing stage n先 A negative correlation exists; Obtain the adsorption force H of the detergent on the clothes to be washed inside the washing equipment, and control the dosing coefficient K in the later washing stage. n后 It is negatively correlated with the adsorption force obtained.

2. The control method for a washing device according to claim 1, characterized in that: The determination of the adsorption capacity of the detergent on the item to be washed includes: After a single washing cycle, the washing equipment is drained and then refilled with water. After the water is refilled, the concentration Q of the detergent in the washing water is obtained, and the obtained concentration Q is used as the adsorption force of the detergent on the item to be washed.

3. The control method for a washing device according to claim 2, characterized in that: The detergent adsorption force H' of the clothes to be washed in the preset washing equipment is determined. The magnitude of the obtained adsorption force H is compared with the preset detergent adsorption force H'. If H ≥ H', then no detergent is added in the later washing stage.

4. A control method for a washing device according to any one of claims 1 to 3, characterized in that: Control the acquisition of the turbidity value T of the wash water in the initial washing stage. x The turbidity value T of the wash water during the current washing stage y Calculate the turbidity ratio S=T y / T x The dosage coefficient K is controlled in the post-washing stage. n后 It is positively correlated with the turbidity ratio S.

5. The control method for a washing device according to claim 4, characterized in that: The preset turbidity ratio S' is used to compare the calculated turbidity ratio S with the preset turbidity ratio S'. If S ≥ S', then the amount of detergent added in the later stage is controlled to be greater than or equal to the theoretical amount of detergent added.

6. A control method for a washing device according to any one of claims 1 to 2, characterized in that: The adsorption capacity of the laundry to be washed on the detergent is obtained, and the number of times the detergent is added is positively correlated with the obtained adsorption capacity.

7. A control method for a washing device according to any one of claims 1 to 2, characterized in that: Obtain the detergent concentration Q' in the wash water during the post-washing stage and the theoretical detergent dosage M for this washing stage. Compare the theoretical detergent dosage M with the obtained detergent concentration Q'. If Q' ≥ M, then no detergent is added during the post-washing stage.

8. A washing device, characterized in that: Control is performed using the control method described in any one of claims 1-7 above.

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